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authortobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-10-31 15:55:19 +0000
committertobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-10-31 15:55:19 +0000
commitb3353a82da64f18f1a7787004a31e45edf40dc87 (patch)
tree2e36246d58bf5993b17f293b1dbd62c22dd468f3 /unicode/src/lib/ffmpeg
parent9a513d190c693745328ff5d04b5ad67ea0fc831a (diff)
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unicode branch added
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/experimental@1492 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'unicode/src/lib/ffmpeg')
-rw-r--r--unicode/src/lib/ffmpeg/avcodec.pas3410
-rw-r--r--unicode/src/lib/ffmpeg/avformat.pas1438
-rw-r--r--unicode/src/lib/ffmpeg/avio.pas545
-rw-r--r--unicode/src/lib/ffmpeg/avutil.pas320
-rw-r--r--unicode/src/lib/ffmpeg/mathematics.pas88
-rw-r--r--unicode/src/lib/ffmpeg/opt.pas198
-rw-r--r--unicode/src/lib/ffmpeg/rational.pas175
-rw-r--r--unicode/src/lib/ffmpeg/src/MacOSX/MacOSXReadMe.txt24
-rwxr-xr-xunicode/src/lib/ffmpeg/src/MacOSX/build_ffmpeg.sh6
-rwxr-xr-xunicode/src/lib/ffmpeg/src/MacOSX/copy_and_patch_dylibs.sh23
-rw-r--r--unicode/src/lib/ffmpeg/swscale.pas212
11 files changed, 6439 insertions, 0 deletions
diff --git a/unicode/src/lib/ffmpeg/avcodec.pas b/unicode/src/lib/ffmpeg/avcodec.pas
new file mode 100644
index 00000000..0954ee06
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/avcodec.pas
@@ -0,0 +1,3410 @@
+(*
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversion of libavcodec/avcodec.h
+ * Min. version: 51.16.0, revision 6577, Sat Oct 7 15:30:46 2006 UTC
+ * Max. version: 52.0.0, revision 15448, Sun Sep 28 19:11:26 2008 UTC
+ *)
+
+unit avcodec;
+
+{$IFDEF FPC}
+ {$MODE DELPHI }
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$IFDEF DARWIN}
+ {$linklib libavcodec}
+{$ENDIF}
+
+interface
+
+uses
+ ctypes,
+ avutil,
+ rational,
+ opt,
+ {$IFDEF UNIX}
+ BaseUnix,
+ {$ENDIF}
+ UConfig;
+
+const
+ (* Max. supported version by this header *)
+ LIBAVCODEC_MAX_VERSION_MAJOR = 52;
+ LIBAVCODEC_MAX_VERSION_MINOR = 0;
+ LIBAVCODEC_MAX_VERSION_RELEASE = 0;
+ LIBAVCODEC_MAX_VERSION = (LIBAVCODEC_MAX_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVCODEC_MAX_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVCODEC_MAX_VERSION_RELEASE * VERSION_RELEASE);
+
+ (* Min. supported version by this header *)
+ LIBAVCODEC_MIN_VERSION_MAJOR = 51;
+ LIBAVCODEC_MIN_VERSION_MINOR = 16;
+ LIBAVCODEC_MIN_VERSION_RELEASE = 0;
+ LIBAVCODEC_MIN_VERSION = (LIBAVCODEC_MIN_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVCODEC_MIN_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVCODEC_MIN_VERSION_RELEASE * VERSION_RELEASE);
+
+(* Check if linked versions are supported *)
+{$IF (LIBAVCODEC_VERSION < LIBAVCODEC_MIN_VERSION)}
+ {$MESSAGE Error 'Linked version of libavcodec is too old!'}
+{$IFEND}
+
+(* Check if linked version is supported *)
+{$IF (LIBAVCODEC_VERSION > LIBAVCODEC_MAX_VERSION)}
+ {$MESSAGE Error 'Linked version of libavcodec is not yet supported!'}
+{$IFEND}
+
+const
+ AV_NOPTS_VALUE: cint64 = $8000000000000000;
+ AV_TIME_BASE = 1000000;
+ AV_TIME_BASE_Q : TAVRational = (num: 1; den: AV_TIME_BASE);
+
+(**
+ * Identifies the syntax and semantics of the bitstream.
+ * The principle is roughly:
+ * Two decoders with the same ID can decode the same streams.
+ * Two encoders with the same ID can encode compatible streams.
+ * There may be slight deviations from the principle due to implementation
+ * details.
+ *
+ * If you add a codec ID to this list, add it so that
+ * 1. no value of a existing codec ID changes (that would break ABI),
+ * 2. it is as close as possible to similar codecs.
+ *)
+type
+ TCodecID = (
+ CODEC_ID_NONE,
+
+ (* video codecs *)
+ CODEC_ID_MPEG1VIDEO,
+ CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1/2 decoding */
+ CODEC_ID_MPEG2VIDEO_XVMC,
+ CODEC_ID_H261,
+ CODEC_ID_H263,
+ CODEC_ID_RV10,
+ CODEC_ID_RV20,
+ CODEC_ID_MJPEG,
+ CODEC_ID_MJPEGB,
+ CODEC_ID_LJPEG,
+ CODEC_ID_SP5X,
+ CODEC_ID_JPEGLS,
+ CODEC_ID_MPEG4,
+ CODEC_ID_RAWVIDEO,
+ CODEC_ID_MSMPEG4V1,
+ CODEC_ID_MSMPEG4V2,
+ CODEC_ID_MSMPEG4V3,
+ CODEC_ID_WMV1,
+ CODEC_ID_WMV2,
+ CODEC_ID_H263P,
+ CODEC_ID_H263I,
+ CODEC_ID_FLV1,
+ CODEC_ID_SVQ1,
+ CODEC_ID_SVQ3,
+ CODEC_ID_DVVIDEO,
+ CODEC_ID_HUFFYUV,
+ CODEC_ID_CYUV,
+ CODEC_ID_H264,
+ CODEC_ID_INDEO3,
+ CODEC_ID_VP3,
+ CODEC_ID_THEORA,
+ CODEC_ID_ASV1,
+ CODEC_ID_ASV2,
+ CODEC_ID_FFV1,
+ CODEC_ID_4XM,
+ CODEC_ID_VCR1,
+ CODEC_ID_CLJR,
+ CODEC_ID_MDEC,
+ CODEC_ID_ROQ,
+ CODEC_ID_INTERPLAY_VIDEO,
+ CODEC_ID_XAN_WC3,
+ CODEC_ID_XAN_WC4,
+ CODEC_ID_RPZA,
+ CODEC_ID_CINEPAK,
+ CODEC_ID_WS_VQA,
+ CODEC_ID_MSRLE,
+ CODEC_ID_MSVIDEO1,
+ CODEC_ID_IDCIN,
+ CODEC_ID_8BPS,
+ CODEC_ID_SMC,
+ CODEC_ID_FLIC,
+ CODEC_ID_TRUEMOTION1,
+ CODEC_ID_VMDVIDEO,
+ CODEC_ID_MSZH,
+ CODEC_ID_ZLIB,
+ CODEC_ID_QTRLE,
+ CODEC_ID_SNOW,
+ CODEC_ID_TSCC,
+ CODEC_ID_ULTI,
+ CODEC_ID_QDRAW,
+ CODEC_ID_VIXL,
+ CODEC_ID_QPEG,
+ CODEC_ID_XVID,
+ CODEC_ID_PNG,
+ CODEC_ID_PPM,
+ CODEC_ID_PBM,
+ CODEC_ID_PGM,
+ CODEC_ID_PGMYUV,
+ CODEC_ID_PAM,
+ CODEC_ID_FFVHUFF,
+ CODEC_ID_RV30,
+ CODEC_ID_RV40,
+ CODEC_ID_VC1,
+ CODEC_ID_WMV3,
+ CODEC_ID_LOCO,
+ CODEC_ID_WNV1,
+ CODEC_ID_AASC,
+ CODEC_ID_INDEO2,
+ CODEC_ID_FRAPS,
+ CODEC_ID_TRUEMOTION2,
+ CODEC_ID_BMP,
+ CODEC_ID_CSCD,
+ CODEC_ID_MMVIDEO,
+ CODEC_ID_ZMBV,
+ CODEC_ID_AVS,
+ CODEC_ID_SMACKVIDEO,
+ CODEC_ID_NUV,
+ CODEC_ID_KMVC,
+ CODEC_ID_FLASHSV,
+ CODEC_ID_CAVS,
+ CODEC_ID_JPEG2000,
+ CODEC_ID_VMNC,
+ CODEC_ID_VP5,
+ CODEC_ID_VP6,
+ CODEC_ID_VP6F,
+ CODEC_ID_TARGA,
+ CODEC_ID_DSICINVIDEO,
+ CODEC_ID_TIERTEXSEQVIDEO,
+ CODEC_ID_TIFF,
+ CODEC_ID_GIF,
+ CODEC_ID_FFH264,
+ CODEC_ID_DXA,
+ CODEC_ID_DNXHD,
+ CODEC_ID_THP,
+ CODEC_ID_SGI,
+ CODEC_ID_C93,
+ CODEC_ID_BETHSOFTVID,
+ CODEC_ID_PTX,
+ CODEC_ID_TXD,
+ CODEC_ID_VP6A,
+ CODEC_ID_AMV,
+ CODEC_ID_VB,
+ CODEC_ID_PCX,
+ CODEC_ID_SUNRAST,
+ CODEC_ID_INDEO4,
+ CODEC_ID_INDEO5,
+ CODEC_ID_MIMIC,
+ CODEC_ID_RL2,
+ CODEC_ID_8SVX_EXP,
+ CODEC_ID_8SVX_FIB,
+ CODEC_ID_ESCAPE124,
+ CODEC_ID_DIRAC,
+ CODEC_ID_BFI,
+ CODEC_ID_CMV,
+ CODEC_ID_MOTIONPIXELS,
+ CODEC_ID_TGV,
+
+ //* various PCM "codecs" */
+ CODEC_ID_PCM_S16LE= $10000,
+ CODEC_ID_PCM_S16BE,
+ CODEC_ID_PCM_U16LE,
+ CODEC_ID_PCM_U16BE,
+ CODEC_ID_PCM_S8,
+ CODEC_ID_PCM_U8,
+ CODEC_ID_PCM_MULAW,
+ CODEC_ID_PCM_ALAW,
+ CODEC_ID_PCM_S32LE,
+ CODEC_ID_PCM_S32BE,
+ CODEC_ID_PCM_U32LE,
+ CODEC_ID_PCM_U32BE,
+ CODEC_ID_PCM_S24LE,
+ CODEC_ID_PCM_S24BE,
+ CODEC_ID_PCM_U24LE,
+ CODEC_ID_PCM_U24BE,
+ CODEC_ID_PCM_S24DAUD,
+ CODEC_ID_PCM_ZORK,
+ CODEC_ID_PCM_S16LE_PLANAR,
+ CODEC_ID_PCM_DVD,
+ CODEC_ID_PCM_F32BE,
+ CODEC_ID_PCM_F32LE,
+ CODEC_ID_PCM_F64BE,
+ CODEC_ID_PCM_F64LE,
+
+ //* various ADPCM codecs */
+ CODEC_ID_ADPCM_IMA_QT= $11000,
+ CODEC_ID_ADPCM_IMA_WAV,
+ CODEC_ID_ADPCM_IMA_DK3,
+ CODEC_ID_ADPCM_IMA_DK4,
+ CODEC_ID_ADPCM_IMA_WS,
+ CODEC_ID_ADPCM_IMA_SMJPEG,
+ CODEC_ID_ADPCM_MS,
+ CODEC_ID_ADPCM_4XM,
+ CODEC_ID_ADPCM_XA,
+ CODEC_ID_ADPCM_ADX,
+ CODEC_ID_ADPCM_EA,
+ CODEC_ID_ADPCM_G726,
+ CODEC_ID_ADPCM_CT,
+ CODEC_ID_ADPCM_SWF,
+ CODEC_ID_ADPCM_YAMAHA,
+ CODEC_ID_ADPCM_SBPRO_4,
+ CODEC_ID_ADPCM_SBPRO_3,
+ CODEC_ID_ADPCM_SBPRO_2,
+ CODEC_ID_ADPCM_THP,
+ CODEC_ID_ADPCM_IMA_AMV,
+ CODEC_ID_ADPCM_EA_R1,
+ CODEC_ID_ADPCM_EA_R3,
+ CODEC_ID_ADPCM_EA_R2,
+ CODEC_ID_ADPCM_IMA_EA_SEAD,
+ CODEC_ID_ADPCM_IMA_EA_EACS,
+ CODEC_ID_ADPCM_EA_XAS,
+ CODEC_ID_ADPCM_EA_MAXIS_XA,
+
+ //* AMR */
+ CODEC_ID_AMR_NB= $12000,
+ CODEC_ID_AMR_WB,
+
+ //* RealAudio codecs*/
+ CODEC_ID_RA_144= $13000,
+ CODEC_ID_RA_288,
+
+ //* various DPCM codecs */
+ CODEC_ID_ROQ_DPCM= $14000,
+ CODEC_ID_INTERPLAY_DPCM,
+ CODEC_ID_XAN_DPCM,
+ CODEC_ID_SOL_DPCM,
+
+ (* audio codecs *)
+ CODEC_ID_MP2= $15000,
+ CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
+ CODEC_ID_AAC,
+ {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+ _CODEC_ID_MPEG4AAC, // will be redefined to CODEC_ID_AAC below
+ {$IFEND}
+ CODEC_ID_AC3,
+ CODEC_ID_DTS,
+ CODEC_ID_VORBIS,
+ CODEC_ID_DVAUDIO,
+ CODEC_ID_WMAV1,
+ CODEC_ID_WMAV2,
+ CODEC_ID_MACE3,
+ CODEC_ID_MACE6,
+ CODEC_ID_VMDAUDIO,
+ CODEC_ID_SONIC,
+ CODEC_ID_SONIC_LS,
+ CODEC_ID_FLAC,
+ CODEC_ID_MP3ADU,
+ CODEC_ID_MP3ON4,
+ CODEC_ID_SHORTEN,
+ CODEC_ID_ALAC,
+ CODEC_ID_WESTWOOD_SND1,
+ CODEC_ID_GSM, ///< as in Berlin toast format
+ CODEC_ID_QDM2,
+ CODEC_ID_COOK,
+ CODEC_ID_TRUESPEECH,
+ CODEC_ID_TTA,
+ CODEC_ID_SMACKAUDIO,
+ CODEC_ID_QCELP,
+ CODEC_ID_WAVPACK,
+ CODEC_ID_DSICINAUDIO,
+ CODEC_ID_IMC,
+ CODEC_ID_MUSEPACK7,
+ CODEC_ID_MLP,
+ CODEC_ID_GSM_MS, { as found in WAV }
+ CODEC_ID_ATRAC3,
+ CODEC_ID_VOXWARE,
+ CODEC_ID_APE,
+ CODEC_ID_NELLYMOSER,
+ CODEC_ID_MUSEPACK8,
+ CODEC_ID_SPEEX,
+ CODEC_ID_WMAVOICE,
+ CODEC_ID_WMAPRO,
+ CODEC_ID_WMALOSSLESS,
+ CODEC_ID_ATRAC3P,
+ CODEC_ID_EAC3,
+ CODEC_ID_SIPR,
+
+ //* subtitle codecs */
+ CODEC_ID_DVD_SUBTITLE= $17000,
+ CODEC_ID_DVB_SUBTITLE,
+ CODEC_ID_TEXT, ///< raw UTF-8 text
+ CODEC_ID_XSUB,
+ CODEC_ID_SSA,
+ CODEC_ID_MOV_TEXT,
+
+ (* other specific kind of codecs (generally used for attachments) *)
+ CODEC_ID_TTF= $18000,
+
+ CODEC_ID_PROBE= $19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
+
+ CODEC_ID_MPEG2TS= $20000, {*< _FAKE_ codec to indicate a raw MPEG-2 TS
+ * stream (only used by libavformat) *}
+ __CODEC_ID_4BYTE = $FFFFF // ensure 4-byte enum
+ );
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+{* CODEC_ID_MP3LAME is obsolete *}
+const
+ CODEC_ID_MP3LAME = CODEC_ID_MP3;
+ CODEC_ID_MPEG4AAC = CODEC_ID_AAC;
+{$IFEND}
+
+type
+ TCodecType = (
+ CODEC_TYPE_UNKNOWN = -1,
+ CODEC_TYPE_VIDEO,
+ CODEC_TYPE_AUDIO,
+ CODEC_TYPE_DATA,
+ CODEC_TYPE_SUBTITLE,
+ CODEC_TYPE_ATTACHMENT,
+ CODEC_TYPE_NB
+ );
+
+{**
+ * all in native endian
+ *}
+type
+ TSampleFormat = (
+ SAMPLE_FMT_NONE = -1,
+ SAMPLE_FMT_U8, ///< unsigned 8 bits
+ SAMPLE_FMT_S16, ///< signed 16 bits
+ SAMPLE_FMT_S32, ///< signed 32 bits
+ SAMPLE_FMT_FLT, ///< float
+ SAMPLE_FMT_DBL, ///< double
+ SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec
+ );
+ _TSampleFormatArray = array [0 .. MaxInt div SizeOf(TSampleFormat)-1] of TSampleFormat;
+ PSampleFormatArray = ^_TSampleFormatArray;
+
+const
+ {* in bytes *}
+ AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio
+
+{**
+ * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
+ * This is mainly needed because some optimized bitstream readers read
+ * 32 or 64 bit at once and could read over the end.<br>
+ * Note: If the first 23 bits of the additional bytes are not 0, then damaged
+ * MPEG bitstreams could cause overread and segfault.
+ *}
+ FF_INPUT_BUFFER_PADDING_SIZE = 8;
+
+{**
+ * minimum encoding buffer size.
+ * Used to avoid some checks during header writing.
+ *}
+ FF_MIN_BUFFER_SIZE = 16384;
+
+type
+{*
+ * motion estimation type.
+ *}
+ TMotion_Est_ID = (
+ ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed
+ ME_FULL,
+ ME_LOG,
+ ME_PHODS,
+ ME_EPZS, ///< enhanced predictive zonal search
+ ME_X1, ///< reserved for experiments
+ ME_HEX, ///< hexagon based search
+ ME_UMH, ///< uneven multi-hexagon search
+ ME_ITER, ///< iterative search
+ ME_TESA ///< transformed exhaustive search algorithm
+ );
+
+ TAVDiscard = (
+ {* We leave some space between them for extensions (drop some
+ * keyframes for intra-only or drop just some bidir frames). *}
+ AVDISCARD_NONE =-16, ///< discard nothing
+ AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
+ AVDISCARD_NONREF = 8, ///< discard all non reference
+ AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
+ AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
+ AVDISCARD_ALL = 48 ///< discard all
+ );
+
+ PRcOverride = ^TRcOverride;
+ TRcOverride = record {16}
+ start_frame: cint;
+ end_frame: cint;
+ qscale: cint; // if this is 0 then quality_factor will be used instead
+ quality_factor: cfloat;
+ end;
+
+const
+ FF_MAX_B_FRAMES = 16;
+
+{* encoding support
+ These flags can be passed in AVCodecContext.flags before initialization.
+ Note: Not everything is supported yet.
+*}
+
+ CODEC_FLAG_QSCALE = $0002; ///< Use fixed qscale.
+ CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / advanced prediction for H263.
+ CODEC_FLAG_QPEL = $0010; ///< use qpel MC.
+ CODEC_FLAG_GMC = $0020; ///< use GMC.
+ CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0>.
+ CODEC_FLAG_PART = $0080; ///< Use data partitioning.
+ {**
+ * The parent program guarantees that the input for B-frames containing
+ * streams is not written to for at least s->max_b_frames+1 frames, if
+ * this is not set the input will be copied.
+ *}
+ CODEC_FLAG_INPUT_PRESERVED = $0100;
+ CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode
+ CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode
+ CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg)
+ CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale
+ CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges
+ CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding
+ CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random location instead
+ // of only at frame boundaries */
+ CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization
+ CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct
+ CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay
+ CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan
+ {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
+ CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization
+ {$IFEND}
+ CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe
+ CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct)
+ {* Fx : Flag for h263+ extra options *}
+ {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
+ CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
+ {$IFEND}
+ CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction
+ CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector
+ CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp
+ CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon
+ CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc
+ CODEC_FLAG_OBMC = $00000001; ///< OBMC
+ CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter
+ CODEC_FLAG_H263P_SLICE_STRUCT = $10000000;
+ CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation
+ CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data
+ CODEC_FLAG_CLOSED_GOP = $80000000;
+ CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks
+ CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size
+ CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding
+ CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata
+ CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references
+ CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames
+ CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition
+ CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform
+ CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip
+ CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters
+ CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization
+ CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table
+ CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
+ CODEC_FLAG2_DROP_FRAME_TIMECODE = $00002000; ///< timecode is in drop frame format.
+ CODEC_FLAG2_SKIP_RD = $00004000; ///< RD optimal MB level residual skipping
+ CODEC_FLAG2_CHUNKS = $00008000; ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
+ CODEC_FLAG2_NON_LINEAR_QUANT = $00010000; ///< Use MPEG-2 nonlinear quantizer.
+ CODEC_FLAG2_BIT_RESERVOIR = $00020000; ///< Use a bit reservoir when encoding if possible
+
+(* Unsupported options :
+ * Syntax Arithmetic coding (SAC)
+ * Reference Picture Selection
+ * Independant Segment Decoding *)
+(* /Fx *)
+(* codec capabilities *)
+
+const
+ CODEC_CAP_DRAW_HORIZ_BAND = $0001; ///< decoder can use draw_horiz_band callback
+ (**
+ * Codec uses get_buffer() for allocating buffers.
+ * direct rendering method 1
+ *)
+ CODEC_CAP_DR1 = $0002;
+ (* if 'parse_only' field is true, then avcodec_parse_frame() can be used *)
+ CODEC_CAP_PARSE_ONLY = $0004;
+ CODEC_CAP_TRUNCATED = $0008;
+ (* codec can export data for HW decoding (XvMC) *)
+ CODEC_CAP_HWACCEL = $0010;
+ (**
+ * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
+ * if this is not set, the codec is guranteed to never be feeded with NULL data
+ *)
+ CODEC_CAP_DELAY = $0020;
+ (**
+ * Codec can be fed a final frame with a smaller size.
+ * This can be used to prevent truncation of the last audio samples.
+ *)
+ CODEC_CAP_SMALL_LAST_FRAME = $0040;
+
+ //the following defines may change, don't expect compatibility if you use them
+ MB_TYPE_INTRA4x4 = $001;
+ MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific
+ MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific
+ MB_TYPE_16x16 = $008;
+ MB_TYPE_16x8 = $010;
+ MB_TYPE_8x16 = $020;
+ MB_TYPE_8x8 = $040;
+ MB_TYPE_INTERLACED = $080;
+ MB_TYPE_DIRECT2 = $100; //FIXME
+ MB_TYPE_ACPRED = $200;
+ MB_TYPE_GMC = $400;
+ MB_TYPE_SKIP = $800;
+ MB_TYPE_P0L0 = $1000;
+ MB_TYPE_P1L0 = $2000;
+ MB_TYPE_P0L1 = $4000;
+ MB_TYPE_P1L1 = $8000;
+ MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0);
+ MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1);
+ MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1);
+ MB_TYPE_QUANT = $0010000;
+ MB_TYPE_CBP = $0020000;
+ //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
+
+type
+(**
+ * Pan Scan area.
+ * This specifies the area which should be displayed.
+ * Note there may be multiple such areas for one frame.
+ *)
+ PAVPanScan = ^TAVPanScan;
+ TAVPanScan = record {24}
+ (*** id.
+ * - encoding: set by user.
+ * - decoding: set by libavcodec. *)
+ id: cint;
+
+ (*** width and height in 1/16 pel
+ * - encoding: set by user.
+ * - decoding: set by libavcodec. *)
+ width: cint;
+ height: cint;
+
+ (*** position of the top left corner in 1/16 pel for up to 3 fields/frames.
+ * - encoding: set by user.
+ * - decoding: set by libavcodec. *)
+ position: array [0..2] of array [0..1] of smallint;
+ end;
+
+const
+ FF_QSCALE_TYPE_MPEG1 = 0;
+ FF_QSCALE_TYPE_MPEG2 = 1;
+ FF_QSCALE_TYPE_H264 = 2;
+
+ FF_BUFFER_TYPE_INTERNAL = 1;
+ FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user)
+ FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
+ FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything.
+
+
+ FF_I_TYPE = 1; ///< Intra
+ FF_P_TYPE = 2; ///< Predicted
+ FF_B_TYPE = 3; ///< Bi-dir predicted
+ FF_S_TYPE = 4; ///< S(GMC)-VOP MPEG4
+ FF_SI_TYPE = 5; ///< Switching Intra
+ FF_SP_TYPE = 6; ///< Switching Predicted
+ FF_BI_TYPE = 7;
+
+ FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore)
+ FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer
+ FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content
+ FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update)
+
+type
+ {**
+ * Audio Video Frame.
+ * New fields can be added to the end of FF_COMMON_FRAME with minor version
+ * bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump. No fields should be added into AVFrame before or after
+ * FF_COMMON_FRAME!
+ * sizeof(AVFrame) must not be used outside libav*.
+ *}
+ PAVFrame = ^TAVFrame;
+ TAVFrame = record {200}
+ (**
+ * pointer to the picture planes.
+ * This might be different from the first allocated byte
+ * - encoding:
+ * - decoding:
+ *)
+ data: array [0..3] of pbyte;
+ linesize: array [0..3] of cint;
+ (**
+ * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.
+ * This isn't used by libavcodec unless the default get/release_buffer() is used.
+ * - encoding:
+ * - decoding:
+ *)
+ base: array [0..3] of pbyte;
+ (**
+ * 1 -> keyframe, 0-> not
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ key_frame: cint;
+ (**
+ * Picture type of the frame, see ?_TYPE below.
+ * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
+ * - decoding: Set by libavcodec.
+ *)
+ pict_type: cint;
+ (**
+ * presentation timestamp in time_base units (time when frame should be shown to user)
+ * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.
+ * - encoding: MUST be set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ pts: cint64;
+ (**\
+ * picture number in bitstream order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ coded_picture_number: cint;
+ (**
+ * picture number in display order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ display_picture_number: cint;
+ (**
+ * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
+ * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
+ * - decoding: Set by libavcodec.
+ *)
+ quality: cint;
+ (**
+ * buffer age (1->was last buffer and dint change, 2->..., ...).
+ * Set to INT_MAX if the buffer has not been used yet.
+ * - encoding: unused
+ * - decoding: MUST be set by get_buffer().
+ *)
+ age: cint;
+ (**
+ * is this picture used as reference
+ * The values for this are the same as the MpegEncContext.picture_structure
+ * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
+ * - encoding: unused
+ * - decoding: Set by libavcodec. (before get_buffer() call)).
+ *)
+ reference: cint;
+ (**
+ * QP table
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ qscale_table: PShortint;
+ (**
+ * QP store stride
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ qstride: cint;
+ (**
+ * mbskip_table[mb]>=1 if MB didn't change
+ * stride= mb_width = (width+15)>>4
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ mbskip_table: pbyte;
+ (**
+ * motion vector table
+ * @code
+ * example:
+ * int mv_sample_log2= 4 - motion_subsample_log2;
+ * int mb_width= (width+15)>>4;
+ * int mv_stride= (mb_width << mv_sample_log2) + 1;
+ * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
+ * @endcode
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ //int16_t (*motion_val[2])[2];
+ motion_val: array [0..1] of pointer;
+ (**
+ * macroblock type table
+ * mb_type_base + mb_width + 2
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ mb_type: PCuint;
+ (**
+ * log2 of the size of the block which a single vector in motion_val represents:
+ * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ motion_subsample_log2: byte;
+ (**
+ * for some private data of the user
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ opaque: pointer;
+ (**
+ * error
+ * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.
+ * - decoding: unused
+ *)
+ error: array [0..3] of cuint64;
+ (**
+ * type of the buffer (to keep track of who has to deallocate data[*])
+ * - encoding: Set by the one who allocates it.
+ * - decoding: Set by the one who allocates it.
+ * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.
+ *)
+ type_: cint;
+ (**
+ * When decoding, this signals how much the picture must be delayed.
+ * extra_delay = repeat_pict / (2*fps)
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ repeat_pict: cint;
+ (**
+ *
+ *)
+ qscale_type: cint;
+ (**
+ * The content of the picture is interlaced.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec. (default 0)
+ *)
+ interlaced_frame: cint;
+ (**
+ * If the content is interlaced, is top field displayed first.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ top_field_first: cint;
+ (**
+ * Pan scan.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ pan_scan: PAVPanScan;
+ (**
+ * Tell user application that palette has changed from previous frame.
+ * - encoding: ??? (no palette-enabled encoder yet)
+ * - decoding: Set by libavcodec. (default 0).
+ *)
+ palette_has_changed: cint;
+ (**
+ * codec suggestion on buffer type if != 0
+ * - encoding: unused
+ * - decoding: Set by libavcodec. (before get_buffer() call)).
+ *)
+ buffer_hints: cint;
+ (**
+ * DCT coefficients
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ dct_coeff: PsmallInt;
+ (**
+ * motion referece frame index
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ ref_index: array [0..1] of PShortint;
+
+ {$IF LIBAVCODEC_VERSION >= 51068000} // 51.68.0
+ (**
+ * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque
+ * output in AVFrame.reordered_opaque
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ reordered_opaque: cint64;
+ {$IFEND}
+
+ {$IF LIBAVCODEC_VERSION >= 51070000} // 51.70.0
+ (**
+ * Bits per sample/pixel of internal libavcodec pixel/sample format.
+ * This field is applicable only when sample_fmt is SAMPLE_FMT_S32.
+ * - encoding: set by user.
+ * - decoding: set by libavcodec.
+ *)
+ bits_per_raw_sample: cint;
+ {$IFEND}
+ end;
+
+const
+ {$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
+ DEFAULT_FRAME_RATE_BASE = 1001000;
+ {$IFEND}
+
+ FF_ASPECT_EXTENDED = 15;
+
+ FF_RC_STRATEGY_XVID = 1;
+
+ FF_BUG_AUTODETECT = 1; ///< autodetection
+ FF_BUG_OLD_MSMPEG4 = 2;
+ FF_BUG_XVID_ILACE = 4;
+ FF_BUG_UMP4 = 8;
+ FF_BUG_NO_PADDING = 16;
+ FF_BUG_AMV = 32;
+ FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default
+ FF_BUG_QPEL_CHROMA = 64;
+ FF_BUG_STD_QPEL = 128;
+ FF_BUG_QPEL_CHROMA2 = 256;
+ FF_BUG_DIRECT_BLOCKSIZE = 512;
+ FF_BUG_EDGE = 1024;
+ FF_BUG_HPEL_CHROMA = 2048;
+ FF_BUG_DC_CLIP = 4096;
+ FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders
+ //FF_BUG_FAKE_SCALABILITY = 16 //Autodetection should work 100%.
+
+ FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to a older more strict version of the spec or reference software
+ FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences
+ FF_COMPLIANCE_NORMAL = 0;
+ FF_COMPLIANCE_INOFFICIAL = -1; ///< allow inofficial extensions
+ FF_COMPLIANCE_EXPERIMENTAL = -2; ///< allow non standarized experimental things
+
+ FF_ER_CAREFUL = 1;
+ FF_ER_COMPLIANT = 2;
+ FF_ER_AGGRESSIVE = 3;
+ FF_ER_VERY_AGGRESSIVE = 4;
+
+ FF_DCT_AUTO = 0;
+ FF_DCT_FASTINT = 1;
+ FF_DCT_INT = 2;
+ FF_DCT_MMX = 3;
+ FF_DCT_MLIB = 4;
+ FF_DCT_ALTIVEC = 5;
+ FF_DCT_FAAN = 6;
+
+ FF_IDCT_AUTO = 0;
+ FF_IDCT_INT = 1;
+ FF_IDCT_SIMPLE = 2;
+ FF_IDCT_SIMPLEMMX = 3;
+ FF_IDCT_LIBMPEG2MMX = 4;
+ FF_IDCT_PS2 = 5;
+ FF_IDCT_MLIB = 6;
+ FF_IDCT_ARM = 7;
+ FF_IDCT_ALTIVEC = 8;
+ FF_IDCT_SH4 = 9;
+ FF_IDCT_SIMPLEARM = 10;
+ FF_IDCT_H264 = 11;
+ FF_IDCT_VP3 = 12;
+ FF_IDCT_IPP = 13;
+ FF_IDCT_XVIDMMX = 14;
+ FF_IDCT_CAVS = 15;
+ FF_IDCT_SIMPLEARMV5TE= 16;
+ FF_IDCT_SIMPLEARMV6 = 17;
+ FF_IDCT_SIMPLEVIS = 18;
+ FF_IDCT_WMV2 = 19;
+ FF_IDCT_FAAN = 20;
+
+ FF_EC_GUESS_MVS = 1;
+ FF_EC_DEBLOCK = 2;
+
+ FF_MM_FORCE = $80000000; (* force usage of selected flags (OR) *)
+ (* lower 16 bits - CPU features *)
+ FF_MM_MMX = $0001; ///< standard MMX
+ FF_MM_3DNOW = $0004; ///< AMD 3DNOW
+ FF_MM_MMXEXT = $0002; ///< SSE integer functions or AMD MMX ext
+ FF_MM_SSE = $0008; ///< SSE functions
+ FF_MM_SSE2 = $0010; ///< PIV SSE2 functions
+ FF_MM_3DNOWEXT = $0020; ///< AMD 3DNowExt
+ FF_MM_SSE3 = $0040; ///< Prescott SSE3 functions
+ FF_MM_SSSE3 = $0080; ///< Conroe SSSE3 functions
+ FF_MM_IWMMXT = $0100; ///< XScale IWMMXT
+
+ FF_PRED_LEFT = 0;
+ FF_PRED_PLANE = 1;
+ FF_PRED_MEDIAN = 2;
+
+ FF_DEBUG_PICT_INFO = 1;
+ FF_DEBUG_RC = 2;
+ FF_DEBUG_BITSTREAM = 4;
+ FF_DEBUG_MB_TYPE = 8;
+ FF_DEBUG_QP = 16;
+ FF_DEBUG_MV = 32;
+ FF_DEBUG_DCT_COEFF = $00000040;
+ FF_DEBUG_SKIP = $00000080;
+ FF_DEBUG_STARTCODE = $00000100;
+ FF_DEBUG_PTS = $00000200;
+ FF_DEBUG_ER = $00000400;
+ FF_DEBUG_MMCO = $00000800;
+ FF_DEBUG_BUGS = $00001000;
+ FF_DEBUG_VIS_QP = $00002000;
+ FF_DEBUG_VIS_MB_TYPE = $00004000;
+ FF_DEBUG_BUFFERS = $00008000;
+
+ FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames
+ FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames
+ FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames
+
+ FF_CMP_SAD = 0;
+ FF_CMP_SSE = 1;
+ FF_CMP_SATD = 2;
+ FF_CMP_DCT = 3;
+ FF_CMP_PSNR = 4;
+ FF_CMP_BIT = 5;
+ FF_CMP_RD = 6;
+ FF_CMP_ZERO = 7;
+ FF_CMP_VSAD = 8;
+ FF_CMP_VSSE = 9;
+ FF_CMP_NSSE = 10;
+ FF_CMP_W53 = 11;
+ FF_CMP_W97 = 12;
+ FF_CMP_DCTMAX = 13;
+ FF_CMP_DCT264 = 14;
+ FF_CMP_CHROMA = 256;
+
+ FF_DTG_AFD_SAME = 8;
+ FF_DTG_AFD_4_3 = 9;
+ FF_DTG_AFD_16_9 = 10;
+ FF_DTG_AFD_14_9 = 11;
+ FF_DTG_AFD_4_3_SP_14_9 = 13;
+ FF_DTG_AFD_16_9_SP_14_9 = 14;
+ FF_DTG_AFD_SP_4_3 = 15;
+
+ FF_DEFAULT_QUANT_BIAS = 999999;
+
+ FF_LAMBDA_SHIFT = 7;
+ FF_LAMBDA_SCALE = (1 shl FF_LAMBDA_SHIFT);
+ FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda
+ FF_LAMBDA_MAX = (256 * 128 - 1);
+
+ FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove
+
+ FF_CODER_TYPE_VLC = 0;
+ FF_CODER_TYPE_AC = 1;
+ FF_CODER_TYPE_RAW = 2;
+ FF_CODER_TYPE_RLE = 3;
+ FF_CODER_TYPE_DEFLATE = 4;
+
+ SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display
+ SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
+ SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
+
+ FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp
+ FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits
+ FF_MB_DECISION_RD = 2; ///< rate distortion
+
+ FF_AA_AUTO = 0;
+ FF_AA_FASTINT = 1; //not implemented yet
+ FF_AA_INT = 2;
+ FF_AA_FLOAT = 3;
+
+ FF_PROFILE_UNKNOWN = -99;
+ FF_PROFILE_AAC_MAIN = 0;
+ FF_PROFILE_AAC_LOW = 1;
+ FF_PROFILE_AAC_SSR = 2;
+ FF_PROFILE_AAC_LTP = 3;
+
+ FF_LEVEL_UNKNOWN = -99;
+
+ X264_PART_I4X4 = $001; (* Analyse i4x4 *)
+ X264_PART_I8X8 = $002; (* Analyse i8x8 (requires 8x8 transform) *)
+ X264_PART_P8X8 = $010; (* Analyse p16x8, p8x16 and p8x8 *)
+ X264_PART_P4X4 = $020; (* Analyse p8x4, p4x8, p4x4 *)
+ X264_PART_B8X8 = $100; (* Analyse b16x8, b8x16 and b8x8 *)
+
+ FF_COMPRESSION_DEFAULT = -1;
+
+const
+ AVPALETTE_SIZE = 1024;
+ AVPALETTE_COUNT = 256;
+
+type
+(**
+ * AVPaletteControl
+ * This structure defines a method for communicating palette changes
+ * between and demuxer and a decoder.
+ *
+ * @deprecated Use AVPacket to send palette changes instead.
+ * This is totally broken.
+ *)
+ PAVPaletteControl = ^TAVPaletteControl;
+ TAVPaletteControl = record
+ (* demuxer sets this to 1 to indicate the palette has changed;
+ * decoder resets to 0 *)
+ palette_changed: cint;
+
+ (* 4-byte ARGB palette entries, stored in native byte order; note that
+ * the individual palette components should be on a 8-bit scale; if
+ * the palette data comes from a IBM VGA native format, the component
+ * data is probably 6 bits in size and needs to be scaled *)
+ palette: array [0..AVPALETTE_COUNT - 1] of cuint;
+ end; {deprecated;}
+
+type
+ PAVClass = ^TAVClass; {const}
+ PAVCodecContext = ^TAVCodecContext;
+
+ PAVCodec = ^TAVCodec;
+
+ // int[4]
+ PQuadIntArray = ^TQuadIntArray;
+ TQuadIntArray = array[0..3] of cint;
+ // int (*func)(struct AVCodecContext *c2, void *arg)
+ TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): cint; cdecl;
+
+ TAVClass = record {12}
+ class_name: pchar;
+ (* actually passing a pointer to an AVCodecContext
+ or AVFormatContext, which begin with an AVClass.
+ Needed because av_log is in libavcodec and has no visibility
+ of AVIn/OutputFormat *)
+ item_name: function (): pchar; cdecl;
+ option: PAVOption;
+ end;
+
+ (**
+ * main external API structure.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVCodecContext) must not be used outside libav*.
+ *)
+ TAVCodecContext = record {720}
+ (**
+ * information on struct for av_log
+ * - set by avcodec_alloc_context
+ *)
+ av_class: PAVClass;
+ (**
+ * the average bitrate
+ * - encoding: Set by user; unused for constant quantizer encoding.
+ * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
+ *)
+ bit_rate: cint;
+
+ (**
+ * number of bits the bitstream is allowed to diverge from the reference.
+ * the reference can be CBR (for CBR pass1) or VBR (for pass2)
+ * - encoding: Set by user; unused for constant quantizer encoding.
+ * - decoding: unused
+ *)
+ bit_rate_tolerance: cint;
+
+ (**
+ * CODEC_FLAG_*.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ flags: cint;
+
+ (**
+ * Some codecs need additional format info. It is stored here.
+ * If any muxer uses this then ALL demuxers/parsers AND encoders for the
+ * specific codec MUST set it correctly otherwise stream copy breaks.
+ * In general use of this field by muxers is not recommanded.
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec. (FIXME: Is this OK?)
+ *)
+ sub_id: cint;
+
+ (**
+ * Motion estimation algorithm used for video coding.
+ * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
+ * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
+ * - encoding: MUST be set by user.
+ * - decoding: unused
+ *)
+ me_method: cint;
+
+ (**
+ * some codecs need / can use extradata like Huffman tables.
+ * mjpeg: Huffman tables
+ * rv10: additional flags
+ * mpeg4: global headers (they can be in the bitstream or here)
+ * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
+ * than extradata_size to avoid prolems if it is read with the bitstream reader.
+ * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
+ * - encoding: Set/allocated/freed by libavcodec.
+ * - decoding: Set/allocated/freed by user.
+ *)
+ extradata: pbyte;
+ extradata_size: cint;
+
+ (**
+ * This is the fundamental unit of time (in seconds) in terms
+ * of which frame timestamps are represented. For fixed-fps content,
+ * timebase should be 1/framerate and timestamp increments should be
+ * identically 1.
+ * - encoding: MUST be set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ time_base: TAVRational;
+
+ (* video only *)
+ (**
+ * picture width / height.
+ * - encoding: MUST be set by user.
+ * - decoding: Set by libavcodec.
+ * Note: For compatibility it is possible to set this instead of
+ * coded_width/height before decoding.
+ *)
+ width, height: cint;
+
+ (**
+ * the number of pictures in a group of pictures, or 0 for intra_only
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ gop_size: cint;
+
+ (**
+ * Pixel format, see PIX_FMT_xxx.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ pix_fmt: TAVPixelFormat;
+
+ (**
+ * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
+ * has to read frames at native frame rate.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rate_emu: cint;
+
+ (**
+ * If non NULL, 'draw_horiz_band' is called by the libavcodec
+ * decoder to draw a horizontal band. It improves cache usage. Not
+ * all codecs can do that. You must check the codec capabilities
+ * beforehand.
+ * - encoding: unused
+ * - decoding: Set by user.
+ * @param height the height of the slice
+ * @param y the y position of the slice
+ * @param type 1->top field, 2->bottom field, 3->frame
+ * @param offset offset into the AVFrame.data from which the slice should be read
+ *)
+ draw_horiz_band: procedure (s: PAVCodecContext;
+ src: {const} PAVFrame; offset: PQuadIntArray;
+ y: cint; type_: cint; height: cint); cdecl;
+
+ (* audio only *)
+ sample_rate: cint; ///< samples per second
+ channels: cint; ///< number of audio channels
+
+ (**
+ * audio sample format
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ sample_fmt: TSampleFormat; ///< sample format, currenly unused
+
+ (* The following data should not be initialized. *)
+ (**
+ * Samples per packet, initialized when calling 'init'.
+ *)
+ frame_size: cint;
+ frame_number: cint; ///< audio or video frame number
+ real_pict_num: cint; ///< returns the real picture number of previous encoded frame
+
+ (**
+ * Number of frames the decoded output will be delayed relative to
+ * the encoded input.
+ * - encoding: Set by libavcodec.
+ * - decoding: unused
+ *)
+ delay: cint;
+
+ (* - encoding parameters *)
+ qcompress: cfloat; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
+ qblur: cfloat; ///< amount of qscale smoothing over time (0.0-1.0)
+
+ (**
+ * minimum quantizer
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ qmin: cint;
+
+ (**
+ * maximum quantizer
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ qmax: cint;
+
+ (**
+ * maximum quantizer difference between frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_qdiff: cint;
+
+ (**
+ * maximum number of B-frames between non-B-frames
+ * Note: The output will be delayed by max_b_frames+1 relative to the input.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_b_frames: cint;
+
+ (**
+ * qscale factor between IP and B-frames
+ * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
+ * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_quant_factor: cfloat;
+
+ (** obsolete FIXME remove *)
+ rc_strategy: cint;
+
+ b_frame_strategy: cint;
+
+ (**
+ * hurry up amount
+ * - encoding: unused
+ * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
+ * @deprecated Deprecated in favor of skip_idct and skip_frame.
+ *)
+ hurry_up: cint;
+
+ codec: PAVCodec;
+
+ priv_data: pointer;
+
+ {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+ (* unused, FIXME remove*)
+ rtp_mode: cint;
+ {$IFEND}
+
+ rtp_payload_size: cint; (* The size of the RTP payload: the coder will *)
+ (* do it's best to deliver a chunk with size *)
+ (* below rtp_payload_size, the chunk will start *)
+ (* with a start code on some codecs like H.263 *)
+ (* This doesn't take account of any particular *)
+ (* headers inside the transmited RTP payload *)
+
+
+ (* The RTP callback: This function is called *)
+ (* every time the encoder has a packet to send *)
+ (* Depends on the encoder if the data starts *)
+ (* with a Start Code (it should) H.263 does. *)
+ (* mb_nb contains the number of macroblocks *)
+ (* encoded in the RTP payload *)
+ rtp_callback: procedure (avctx: PAVCodecContext; data: pointer;
+ size: cint; mb_nb: cint); cdecl;
+
+ (* statistics, used for 2-pass encoding *)
+ mv_bits: cint;
+ header_bits: cint;
+ i_tex_bits: cint;
+ p_tex_bits: cint;
+ i_count: cint;
+ p_count: cint;
+ skip_count: cint;
+ misc_bits: cint;
+
+ (**
+ * number of bits used for the previously encoded frame
+ * - encoding: Set by libavcodec.
+ * - decoding: unused
+ *)
+ frame_bits: cint;
+
+ (**
+ * Private data of the user, can be used to carry app specific stuff.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ opaque: pointer;
+
+ codec_name: array [0..31] of char;
+ codec_type: TCodecType; (* see CODEC_TYPE_xxx *)
+ codec_id: TCodecID; (* see CODEC_ID_xxx *)
+
+ (**
+ * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * This is used to work around some encoder bugs.
+ * A demuxer should set this to what is stored in the field used to identify the codec.
+ * If there are multiple such fields in a container then the demuxer should choose the one
+ * which maximizes the information about the used codec.
+ * If the codec tag field in a container is larger then 32 bits then the demuxer should
+ * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
+ * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
+ * first.
+ * - encoding: Set by user, if not then the default based on codec_id will be used.
+ * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
+ *)
+ codec_tag: cuint;
+
+ (**
+ * Work around bugs in encoders which sometimes cannot be detected automatically.
+ * - encoding: Set by user
+ * - decoding: Set by user
+ *)
+ workaround_bugs: cint;
+
+ (**
+ * luma single coefficient elimination threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ luma_elim_threshold: cint;
+
+ (**
+ * chroma single coeff elimination threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ chroma_elim_threshold: cint;
+
+ (**
+ * strictly follow the standard (MPEG4, ...).
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ * Setting this to STRICT or higher means the encoder and decoder will
+ * generally do stupid things. While setting it to inofficial or lower
+ * will mean the encoder might use things that are not supported by all
+ * spec compliant decoders. Decoders make no difference between normal,
+ * inofficial and experimental, that is they always try to decode things
+ * when they can unless they are explicitly asked to behave stupid
+ * (=strictly conform to the specs)
+ *)
+ strict_std_compliance: cint;
+
+ (**
+ * qscale offset between IP and B-frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_quant_offset: cfloat;
+
+ (**
+ * Error recognization; higher values will detect more errors but may
+ * misdetect some more or less valid parts as errors.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ error_recognition: cint;
+
+ (**
+ * Called at the beginning of each frame to get a buffer for it.
+ * If pic.reference is set then the frame will be read later by libavcodec.
+ * avcodec_align_dimensions() should be used to find the required width and
+ * height, as they normally need to be rounded up to the next multiple of 16.
+ * - encoding: unused
+ * - decoding: Set by libavcodec., user can override.
+ *)
+ get_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl;
+
+ (**
+ * Called to release buffers which were allocated with get_buffer.
+ * A released buffer can be reused in get_buffer().
+ * pic.data[*] must be set to NULL.
+ * - encoding: unused
+ * - decoding: Set by libavcodec., user can override.
+ *)
+ release_buffer: procedure (c: PAVCodecContext; pic: PAVFrame); cdecl;
+
+ (**
+ * If 1 the stream has a 1 frame delay during decoding.
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ has_b_frames: cint;
+
+ (**
+ * number of bytes per packet if constant and known or 0
+ * Used by some WAV based audio codecs.
+ *)
+ block_align: cint;
+
+ parse_only: cint; (* - decoding only: if true, only parsing is done
+ (function avcodec_parse_frame()). The frame
+ data is returned. Only MPEG codecs support this now. *)
+
+ (**
+ * 0-> h263 quant 1-> mpeg quant
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mpeg_quant: cint;
+
+ (**
+ * pass1 encoding statistics output buffer
+ * - encoding: Set by libavcodec.
+ * - decoding: unused
+ *)
+ stats_out: pchar;
+
+ (**
+ * pass2 encoding statistics input buffer
+ * Concatenated stuff from stats_out of pass1 should be placed here.
+ * - encoding: Allocated/set/freed by user.
+ * - decoding: unused
+ *)
+ stats_in: pchar;
+
+ (**
+ * ratecontrol qmin qmax limiting method
+ * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_qsquish: cfloat;
+
+ rc_qmod_amp: cfloat;
+ rc_qmod_freq: cint;
+
+ (**
+ * ratecontrol override, see RcOverride
+ * - encoding: Allocated/set/freed by user.
+ * - decoding: unused
+ *)
+ rc_override: PRcOverride;
+ rc_override_count: cint;
+
+ (**
+ * rate control equation
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ rc_eq: {const} pchar;
+
+ (**
+ * maximum bitrate
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_max_rate: cint;
+
+ (**
+ * minimum bitrate
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_min_rate: cint;
+
+ (**
+ * decoder bitstream buffer size
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_buffer_size: cint;
+ rc_buffer_aggressivity: cfloat;
+
+ (**
+ * qscale factor between P and I-frames
+ * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
+ * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ i_quant_factor: cfloat;
+
+ (**
+ * qscale offset between P and I-frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ i_quant_offset: cfloat;
+
+ (**
+ * initial complexity for pass1 ratecontrol
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_initial_cplx: cfloat;
+
+ (**
+ * DCT algorithm, see FF_DCT_* below
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dct_algo: cint;
+
+ (**
+ * luminance masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lumi_masking: cfloat;
+
+ (**
+ * temporary complexity masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ temporal_cplx_masking: cfloat;
+
+ (**
+ * spatial complexity masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ spatial_cplx_masking: cfloat;
+
+ (**
+ * p block masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ p_masking: cfloat;
+
+ (**
+ * darkness masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dark_masking: cfloat;
+
+ {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+ (* for binary compatibility *)
+ unused: cint;
+ {$IFEND}
+
+ (**
+ * IDCT algorithm, see FF_IDCT_* below.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ idct_algo: cint;
+
+ (**
+ * slice count
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by user (or 0).
+ *)
+ slice_count: cint;
+
+ (**
+ * slice offsets in the frame in bytes
+ * - encoding: Set/allocated by libavcodec.
+ * - decoding: Set/allocated by user (or NULL).
+ *)
+ slice_offset: PCint;
+
+ (**
+ * error concealment flags
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ error_concealment: cint;
+
+ (**
+ * dsp_mask could be add used to disable unwanted CPU features
+ * CPU features (i.e. MMX, SSE. ...)
+ *
+ * With the FORCE flag you may instead enable given CPU features.
+ * (Dangerous: Usable in case of misdetection, improper usage however will
+ * result into program crash.)
+ *)
+ dsp_mask: cuint;
+
+ (**
+ * bits per sample/pixel from the demuxer (needed for huffyuv).
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by user.
+ *)
+ bits_per_coded_sample: cint;
+
+ (**
+ * prediction method (needed for huffyuv)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ prediction_method: cint;
+
+ (**
+ * sample aspect ratio (0 if unknown)
+ * That is the width of a pixel divided by the height of the pixel.
+ * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ sample_aspect_ratio: TAVRational;
+
+ (**
+ * the picture in the bitstream
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ coded_frame: PAVFrame;
+
+ (**
+ * debug
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ debug: cint;
+
+ (**
+ * debug
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ debug_mv: cint;
+
+ (**
+ * error
+ * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
+ * - decoding: unused
+ *)
+ error: array [0..3] of cuint64;
+
+ (**
+ * minimum MB quantizer
+ * - encoding: unused
+ * - decoding: unused
+ *)
+ mb_qmin: cint;
+
+ (**
+ * maximum MB quantizer
+ * - encoding: unused
+ * - decoding: unused
+ *)
+ mb_qmax: cint;
+
+ (**
+ * motion estimation comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_cmp: cint;
+
+ (**
+ * subpixel motion estimation comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_sub_cmp: cint;
+ (**
+ * macroblock comparison function (not supported yet)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_cmp: cint;
+ (**
+ * interlaced DCT comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ ildct_cmp: cint;
+
+ (**
+ * ME diamond size & shape
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dia_size: cint;
+
+ (**
+ * amount of previous MV predictors (2a+1 x 2a+1 square)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ last_predictor_count: cint;
+
+ (**
+ * prepass for motion estimation
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ pre_me: cint;
+
+ (**
+ * motion estimation prepass comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_pre_cmp: cint;
+
+ (**
+ * ME prepass diamond size & shape
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ pre_dia_size: cint;
+
+ (**
+ * subpel ME quality
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_subpel_quality: cint;
+
+ (**
+ * callback to negotiate the pixelFormat
+ * @param fmt is the list of formats which are supported by the codec,
+ * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
+ * The first is always the native one.
+ * @return the chosen format
+ * - encoding: unused
+ * - decoding: Set by user, if not set the native format will be chosen.
+ *)
+ get_format: function (s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; cdecl;
+
+ (**
+ * DTG active format information (additional aspect ratio
+ * information only used in DVB MPEG-2 transport streams)
+ * 0 if not set.
+ *
+ * - encoding: unused
+ * - decoding: Set by decoder.
+ *)
+ dtg_active_format: cint;
+
+ (**
+ * maximum motion estimation search range in subpel units
+ * If 0 then no limit.
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_range: cint;
+
+ (**
+ * intra quantizer bias
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ intra_quant_bias: cint;
+
+ (**
+ * inter quantizer bias
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ inter_quant_bias: cint;
+
+ (**
+ * color table ID
+ * - encoding: unused
+ * - decoding: Which clrtable should be used for 8bit RGB images.
+ * Tables have to be stored somewhere. FIXME
+ *)
+ color_table_id: cint;
+
+ (**
+ * internal_buffer count
+ * Don't touch, used by libavcodec default_get_buffer().
+ *)
+ internal_buffer_count: cint;
+
+ (**
+ * internal_buffers
+ * Don't touch, used by libavcodec default_get_buffer().
+ *)
+ internal_buffer: pointer;
+
+ (**
+ * Global quality for codecs which cannot change it per frame.
+ * This should be proportional to MPEG-1/2/4 qscale.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ global_quality: cint;
+
+ (**
+ * coder type
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ coder_type: cint;
+
+ (**
+ * context model
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ context_model: cint;
+
+ {
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ realloc: function (s: PAVCodecContext; buf: Pbyte; buf_size: cint): Pbyte; cdecl;
+ }
+
+ (**
+ * slice flags
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ slice_flags: cint;
+
+ (**
+ * XVideo Motion Acceleration
+ * - encoding: forbidden
+ * - decoding: set by decoder
+ *)
+ xvmc_acceleration: cint;
+
+ (**
+ * macroblock decision mode
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_decision: cint;
+
+ (**
+ * custom intra quantization matrix
+ * - encoding: Set by user, can be NULL.
+ * - decoding: Set by libavcodec.
+ *)
+ intra_matrix: PWord;
+
+ (**
+ * custom inter quantization matrix
+ * - encoding: Set by user, can be NULL.
+ * - decoding: Set by libavcodec.
+ *)
+ inter_matrix: PWord;
+
+ (**
+ * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * This is used to work around some encoder bugs.
+ * - encoding: unused
+ * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
+ *)
+ stream_codec_tag: array [0..3] of char; //cuint;
+
+ (**
+ * scene change detection threshold
+ * 0 is default, larger means fewer detected scene changes.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ scenechange_threshold: cint;
+
+ (**
+ * minimum Lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lmin: cint;
+
+ (**
+ * maximum Lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lmax: cint;
+
+ (**
+ * palette control structure
+ * - encoding: ??? (no palette-enabled encoder yet)
+ * - decoding: Set by user.
+ *)
+ palctrl: PAVPaletteControl;
+
+ (**
+ * noise reduction strength
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ noise_reduction: cint;
+
+ (**
+ * Called at the beginning of a frame to get cr buffer for it.
+ * Buffer type (size, hints) must be the same. libavcodec won't check it.
+ * libavcodec will pass previous buffer in pic, function should return
+ * same buffer or new buffer with old frame "painted" into it.
+ * If pic.data[0] == NULL must behave like get_buffer().
+ * - encoding: unused
+ * - decoding: Set by libavcodec., user can override
+ *)
+ reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl;
+
+ (**
+ * Number of bits which should be loaded into the rc buffer before decoding starts.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_initial_buffer_occupancy: cint;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ inter_threshold: cint;
+
+ (**
+ * CODEC_FLAG2_*
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ flags2: cint;
+
+ (**
+ * Simulates errors in the bitstream to test error concealment.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ error_rate: cint;
+
+ (**
+ * MP3 antialias algorithm, see FF_AA_* below.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ antialias_algo: cint;
+
+ (**
+ * quantizer noise shaping
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ quantizer_noise_shaping: cint;
+
+ (**
+ * thread count
+ * is used to decide how many independent tasks should be passed to execute()
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ thread_count: cint;
+
+ (**
+ * The codec may call this to execute several independent things.
+ * It will return only after finishing all tasks.
+ * The user may replace this with some multithreaded implementation,
+ * the default implementation will execute the parts serially.
+ * @param count the number of things to execute
+ * - encoding: Set by libavcodec, user can override.
+ * - decoding: Set by libavcodec, user can override.
+ *)
+ execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: PCint; count: cint): cint; cdecl;
+
+ (**
+ * thread opaque
+ * Can be used by execute() to store some per AVCodecContext stuff.
+ * - encoding: set by execute()
+ * - decoding: set by execute()
+ *)
+ thread_opaque: pointer;
+
+ (**
+ * Motion estimation threshold below which no motion estimation is
+ * performed, but instead the user specified motion vectors are used.
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_threshold: cint;
+
+ (**
+ * Macroblock threshold below which the user specified macroblock types will be used.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_threshold: cint;
+
+ (**
+ * precision of the intra DC coefficient - 8
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ intra_dc_precision: cint;
+
+ (**
+ * noise vs. sse weight for the nsse comparsion function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ nsse_weight: cint;
+
+ (**
+ * Number of macroblock rows at the top which are skipped.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_top: cint;
+
+ (**
+ * Number of macroblock rows at the bottom which are skipped.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_bottom: cint;
+
+ (**
+ * profile
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ profile: cint;
+
+ (**
+ * level
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ level: cint;
+
+ (**
+ * low resolution decoding, 1-> 1/2 size, 2->1/4 size
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ lowres: cint;
+
+ (**
+ * Bitstream width / height, may be different from width/height if lowres
+ * or other things are used.
+ * - encoding: unused
+ * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
+ *)
+ coded_width, coded_height: cint;
+
+ (**
+ * frame skip threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_threshold: cint;
+
+ (**
+ * frame skip factor
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_factor: cint;
+
+ (**
+ * frame skip exponent
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_exp: cint;
+
+ (**
+ * frame skip comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_cmp: cint;
+
+ (**
+ * Border processing masking, raises the quantizer for mbs on the borders
+ * of the picture.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ border_masking: cfloat;
+
+ (**
+ * minimum MB lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_lmin: cint;
+
+ (**
+ * maximum MB lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_lmax: cint;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_penalty_compensation: cint;
+
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_loop_filter: TAVDiscard;
+
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_idct: TAVDiscard;
+
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_frame: TAVDiscard;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ bidir_refine: cint;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ brd_scale: cint;
+
+ (**
+ * constant rate factor - quality-based VBR - values ~correspond to qps
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ {$IF LIBAVCODEC_VERSION >= 51021000} // 51.21.0
+ crf: cfloat;
+ {$ELSE}
+ crf: cint;
+ {$IFEND}
+
+ (**
+ * constant quantization parameter rate control method
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ cqp: cint;
+
+ (**
+ * minimum GOP size
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ keyint_min: cint;
+
+ (**
+ * number of reference frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ refs: cint;
+
+ (**
+ * chroma qp offset from luma
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ chromaoffset: cint;
+
+ (**
+ * Influences how often B-frames are used.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ bframebias: cint;
+
+ (**
+ * trellis RD quantization
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ trellis: cint;
+
+ (**
+ * Reduce fluctuations in qp (before curve compression).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ complexityblur: cfloat;
+
+ (**
+ * in-loop deblocking filter alphac0 parameter
+ * alpha is in the range -6...6
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ deblockalpha: cint;
+
+ (**
+ * in-loop deblocking filter beta parameter
+ * beta is in the range -6...6
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ deblockbeta: cint;
+
+ (**
+ * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ partitions: cint;
+
+ (**
+ * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ directpred: cint;
+
+ (**
+ * Audio cutoff bandwidth (0 means "automatic")
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ cutoff: cint;
+
+ (**
+ * Multiplied by qscale for each frame and added to scene_change_score.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ scenechange_factor: cint;
+
+ (**
+ *
+ * Note: Value depends upon the compare function used for fullpel ME.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mv0_threshold: cint;
+
+ (**
+ * Adjusts sensitivity of b_frame_strategy 1.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_sensitivity: cint;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ compression_level: cint;
+
+ (**
+ * Sets whether to use LPC mode - used by FLAC encoder.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ use_lpc: cint;
+
+ (**
+ * LPC coefficient precision - used by FLAC encoder
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lpc_coeff_precision: cint;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ min_prediction_order: cint;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_prediction_order: cint;
+
+ (**
+ * search method for selecting prediction order
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ prediction_order_method: cint;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ min_partition_order: cint;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_partition_order: cint;
+
+ {$IF LIBAVCODEC_VERSION >= 51026000} // 51.26.0
+ (**
+ * GOP timecode frame start number, in non drop frame format
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ timecode_frame_start: cint64;
+ {$IFEND}
+
+ {$IF LIBAVCODEC_VERSION >= 51042000} // 51.42.0
+ (**
+ * Decoder should decode to this many channels if it can (0 for default)
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ request_channels: cint;
+ {$IFEND}
+
+ {$IF LIBAVCODEC_VERSION > 51049000} // > 51.49.0
+ (**
+ * Percentage of dynamic range compression to be applied by the decoder.
+ * The default value is 1.0, corresponding to full compression.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ drc_scale: cfloat;
+ {$IFEND}
+
+ {$IF LIBAVCODEC_VERSION >= 51068000} // 51.68.0
+ (**
+ * opaque 64bit number (generally a PTS) that will be reordered and
+ * output in AVFrame.reordered_opaque
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ reordered_opaque: cint64;
+ {$IFEND}
+ end;
+
+(**
+ * AVCodec.
+ *)
+ TAVCodec = record
+ name: pchar;
+ type_: TCodecType;
+ id: TCodecID;
+ priv_data_size: cint;
+ init: function (avctx: PAVCodecContext): cint; cdecl; (* typo corretion by the Creative CAT *)
+ encode: function (avctx: PAVCodecContext; buf: pchar; buf_size: cint; data: pointer): cint; cdecl;
+ close: function (avctx: PAVCodecContext): cint; cdecl;
+ decode: function (avctx: PAVCodecContext; outdata: pointer; var outdata_size: cint;
+ buf: {const} pchar; buf_size: cint): cint; cdecl;
+ (**
+ * Codec capabilities.
+ * see CODEC_CAP_*
+ *)
+ capabilities: cint;
+ next: PAVCodec;
+ (**
+ * Flush buffers.
+ * Will be called when seeking
+ *)
+ flush: procedure (avctx: PAVCodecContext); cdecl;
+ supported_framerates: {const} PAVRational; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
+ pix_fmts: {const} PAVPixelFormat; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
+ {$IF LIBAVCODEC_VERSION >= 51055000} // 51.55.0
+ (**
+ * Descriptive name for the codec, meant to be more human readable than \p name.
+ * You \e should use the NULL_IF_CONFIG_SMALL() macro to define it.
+ *)
+ long_name: {const} PChar;
+ {$IFEND}
+ {$IF LIBAVCODEC_VERSION >= 51056000} // 51.56.0
+ supported_samplerates: {const} PCint; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
+ {$IFEND}
+ {$IF LIBAVCODEC_VERSION >= 51062000} // 51.62.0
+ sample_fmts: {const} PSampleFormatArray; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
+ {$IFEND}
+ end;
+
+(**
+ * four components are given, that's all.
+ * the last component is alpha
+ *)
+ PAVPicture = ^TAVPicture;
+ TAVPicture = record
+ data: array [0..3] of pchar;
+ linesize: array [0..3] of cint; ///< number of bytes per line
+ end;
+
+type
+ PAVSubtitleRect = ^TAVSubtitleRect;
+ TAVSubtitleRect = record
+ x: word;
+ y: word;
+ w: word;
+ h: word;
+ nb_colors: word;
+ linesize: cint;
+ rgba_palette: PCuint;
+ bitmap: pchar;
+ end;
+
+ PAVSubtitle = ^TAVSubtitle;
+ TAVSubtitle = record {20}
+ format: word; (* 0 = graphics *)
+ start_display_time: cuint; (* relative to packet pts, in ms *)
+ end_display_time: cuint; (* relative to packet pts, in ms *)
+ num_rects: cuint;
+ rects: PAVSubtitleRect;
+ end;
+
+
+(* resample.c *)
+
+ PReSampleContext = pointer;
+ PAVResampleContext = pointer;
+ PImgReSampleContext = pointer;
+
+function audio_resample_init (output_channels: cint; input_channels: cint;
+ output_rate: cint; input_rate: cint): PReSampleContext;
+ cdecl; external av__codec;
+
+function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: cint): cint;
+ cdecl; external av__codec;
+
+procedure audio_resample_close (s: PReSampleContext);
+ cdecl; external av__codec;
+
+
+function av_resample_init (out_rate: cint; in_rate: cint; filter_length: cint;
+ log2_phase_count: cint; linear: cint; cutoff: cdouble): PAVResampleContext;
+ cdecl; external av__codec;
+
+function av_resample (c: PAVResampleContext; dst: PSmallint; src: PSmallint; var consumed: cint;
+ src_size: cint; dst_size: cint; update_ctx: cint): cint;
+ cdecl; external av__codec;
+
+procedure av_resample_compensate (c: PAVResampleContext; sample_delta: cint;
+ compensation_distance: cint);
+ cdecl; external av__codec;
+
+procedure av_resample_close (c: PAVResampleContext);
+ cdecl; external av__codec;
+
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+(* YUV420 format is assumed ! *)
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_resample_init (output_width: cint; output_height: cint;
+ input_width: cint; input_height: cint): PImgReSampleContext;
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_resample_full_init (owidth: cint; oheight: cint;
+ iwidth: cint; iheight: cint;
+ topBand: cint; bottomBand: cint;
+ leftBand: cint; rightBand: cint;
+ padtop: cint; padbottom: cint;
+ padleft: cint; padright: cint): PImgReSampleContext;
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+procedure img_resample (s: PImgReSampleContext; output: PAVPicture; input: {const} PAVPicture);
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+procedure img_resample_close (s: PImgReSampleContext);
+ cdecl; external av__codec; deprecated;
+
+{$IFEND}
+
+(**
+ * Allocate memory for a picture. Call avpicture_free to free it.
+ *
+ * @param picture the picture to be filled in.
+ * @param pix_fmt the format of the picture.
+ * @param width the width of the picture.
+ * @param height the height of the picture.
+ * @return Zero if successful, a negative value if not.
+ *)
+function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat;
+ width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Free a picture previously allocated by avpicture_alloc().
+ *
+ * @param picture the AVPicture to be freed
+ *)
+procedure avpicture_free (picture: PAVPicture);
+ cdecl; external av__codec;
+
+(**
+ * Fill in the AVPicture fields.
+ * The fields of the given AVPicture are filled in by using the 'ptr' address
+ * which points to the image data buffer. Depending on the specified picture
+ * format, one or multiple image data pointers and line sizes will be set.
+ * If a planar format is specified, several pointers will be set pointing to
+ * the different picture planes and the line sizes of the different planes
+ * will be stored in the lines_sizes array.
+ *
+ * @param picture AVPicture whose fields are to be filled in
+ * @param ptr Buffer which will contain or contains the actual image data
+ * @param pix_fmt The format in which the picture data is stored.
+ * @param width the width of the image in pixels
+ * @param height the height of the image in pixels
+ * @return size of the image data in bytes
+ *)
+function avpicture_fill (picture: PAVPicture; ptr: pointer;
+ pix_fmt: TAVPixelFormat; width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+function avpicture_layout (src: {const} PAVPicture; pix_fmt: TAVPixelFormat;
+ width: cint; height: cint;
+ dest: pchar; dest_size: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Calculate the size in bytes that a picture of the given width and height
+ * would occupy if stored in the given picture format.
+ *
+ * @param pix_fmt the given picture format
+ * @param width the width of the image
+ * @param height the height of the image
+ * @return Image data size in bytes
+ *)
+function avpicture_get_size (pix_fmt: TAVPixelFormat; width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; var h_shift: cint; var v_shift: cint);
+ cdecl; external av__codec;
+
+function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): pchar;
+ cdecl; external av__codec;
+
+procedure avcodec_set_dimensions(s: PAVCodecContext; width: cint; height: cint);
+ cdecl; external av__codec;
+
+function avcodec_get_pix_fmt(name: {const} pchar): TAVPixelFormat;
+ cdecl; external av__codec;
+
+function avcodec_pix_fmt_to_codec_tag(p: TAVPixelFormat): cuint;
+ cdecl; external av__codec;
+
+const
+ FF_LOSS_RESOLUTION = $0001; {**< loss due to resolution change *}
+ FF_LOSS_DEPTH = $0002; {**< loss due to color depth change *}
+ FF_LOSS_COLORSPACE = $0004; {**< loss due to color space conversion *}
+ FF_LOSS_ALPHA = $0008; {**< loss of alpha bits *}
+ FF_LOSS_COLORQUANT = $0010; {**< loss due to color quantization *}
+ FF_LOSS_CHROMA = $0020; {**< loss of chroma (e.g. RGB to gray conversion) *}
+
+(**
+ * Computes what kind of losses will occur when converting from one specific
+ * pixel format to another.
+ * When converting from one pixel format to another, information loss may occur.
+ * For example, when converting from RGB24 to GRAY, the color information will
+ * be lost. Similarly, other losses occur when converting from some formats to
+ * other formats. These losses can involve loss of chroma, but also loss of
+ * resolution, loss of color depth, loss due to the color space conversion, loss
+ * of the alpha bits or loss due to color quantization.
+ * avcodec_get_fix_fmt_loss() informs you about the various types of losses
+ * which will occur when converting from one pixel format to another.
+ *
+ * @param[in] dst_pix_fmt destination pixel format
+ * @param[in] src_pix_fmt source pixel format
+ * @param[in] has_alpha Whether the source pixel format alpha channel is used.
+ * @return Combination of flags informing you what kind of losses will occur.
+ *)
+function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat;
+ has_alpha: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Finds the best pixel format to convert to given a certain source pixel
+ * format. When converting from one pixel format to another, information loss
+ * may occur. For example, when converting from RGB24 to GRAY, the color
+ * information will be lost. Similarly, other losses occur when converting from
+ * some formats to other formats. avcodec_find_best_pix_fmt() searches which of
+ * the given pixel formats should be used to suffer the least amount of loss.
+ * The pixel formats from which it chooses one, are determined by the
+ * \p pix_fmt_mask parameter.
+ *
+ * @code
+ * src_pix_fmt = PIX_FMT_YUV420P;
+ * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24);
+ * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
+ * @endcode
+ *
+ * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from
+ * @param[in] src_pix_fmt source pixel format
+ * @param[in] has_alpha Whether the source pixel format alpha channel is used.
+ * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
+ * @return The best pixel format to convert to or -1 if none was found.
+ *)
+{$IF LIBAVCODEC_VERSION >= 52000000} // 52.0.0
+function avcodec_find_best_pix_fmt(pix_fmt_mask: cint64; src_pix_fmt: TAVPixelFormat;
+ has_alpha: cint; loss_ptr: PCint): cint;
+ cdecl; external av__codec;
+{$ELSE}
+function avcodec_find_best_pix_fmt(pix_fmt_mask: cint; src_pix_fmt: TAVPixelFormat;
+ has_alpha: cint; loss_ptr: PCint): cint;
+ cdecl; external av__codec;
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0
+(**
+ * Print in buf the string corresponding to the pixel format with
+ * number pix_fmt, or an header if pix_fmt is negative.
+ *
+ * @param[in] buf the buffer where to write the string
+ * @param[in] buf_size the size of buf
+ * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or
+ * a negative value to print the corresponding header.
+ * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1.
+ *)
+procedure avcodec_pix_fmt_string (buf: PChar; buf_size: cint; pix_fmt: cint);
+ cdecl; external av__codec;
+{$IFEND}
+
+const
+ FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *}
+ FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *}
+
+(**
+ * Tell if an image really has transparent alpha values.
+ * @return ored mask of FF_ALPHA_xxx constants
+ *)
+function img_get_alpha_info (src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat;
+ width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+(**
+ * convert among pixel formats
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat;
+ src: {const} PAVPicture; pix_fmt: TAVPixelFormat;
+ width: cint; height: cint): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(* deinterlace a picture *)
+(* deinterlace - if not supported return -1 *)
+function avpicture_deinterlace (dst: PAVPicture; src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat; width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+{* external high level API *}
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+{
+var
+ first_avcodec: PAVCodec; external av__codec;
+}
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0
+function av_codec_next(c: PAVCodec): PAVCodec;
+ cdecl; external av__codec;
+{$IFEND}
+
+(**
+ * Returns the LIBAVCODEC_VERSION_INT constant.
+ *)
+function avcodec_version(): cuint;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION < 52008000} // 52.8.0
+(* returns LIBAVCODEC_BUILD constant *)
+function avcodec_build(): cuint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Initializes libavcodec.
+ *
+ * @warning This function \e must be called before any other libavcodec
+ * function.
+ *)
+procedure avcodec_init();
+ cdecl; external av__codec;
+
+procedure register_avcodec(format: PAVCodec);
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered encoder with a matching codec ID.
+ *
+ * @param id CodecID of the requested encoder
+ * @return An encoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_encoder(id: TCodecID): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered encoder with the specified name.
+ *
+ * @param name name of the requested encoder
+ * @return An encoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_encoder_by_name(name: pchar): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered decoder with a matching codec ID.
+ *
+ * @param id CodecID of the requested decoder
+ * @return A decoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_decoder(id: TCodecID): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered decoder with the specified name.
+ *
+ * @param name name of the requested decoder
+ * @return A decoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_decoder_by_name(name: pchar): PAVCodec;
+ cdecl; external av__codec;
+procedure avcodec_string(buf: pchar; buf_size: cint; enc: PAVCodecContext; encode: cint);
+ cdecl; external av__codec;
+
+(**
+ * Sets the fields of the given AVCodecContext to default values.
+ *
+ * @param s The AVCodecContext of which the fields should be set to default values.
+ *)
+procedure avcodec_get_context_defaults(s: PAVCodecContext);
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
+(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
+ * we WILL change its arguments and name a few times! *)
+procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TCodecType);
+ cdecl; external av__codec;
+{$IFEND}
+
+(**
+ * Allocates an AVCodecContext and sets its fields to default values. The
+ * resulting struct can be deallocated by simply calling av_free().
+ *
+ * @return An AVCodecContext filled with default values or NULL on failure.
+ * @see avcodec_get_context_defaults
+ *)
+function avcodec_alloc_context(): PAVCodecContext;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
+(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
+ * we WILL change its arguments and name a few times! *)
+function avcodec_alloc_context2(ctype: TCodecType): PAVCodecContext;
+ cdecl; external av__codec;
+{$IFEND}
+
+(**
+ * Sets the fields of the given AVFrame to default values.
+ *
+ * @param pic The AVFrame of which the fields should be set to default values.
+ *)
+procedure avcodec_get_frame_defaults (pic: PAVFrame);
+ cdecl; external av__codec;
+
+(**
+ * Allocates an AVFrame and sets its fields to default values. The resulting
+ * struct can be deallocated by simply calling av_free().
+ *
+ * @return An AVFrame filled with default values or NULL on failure.
+ * @see avcodec_get_frame_defaults
+ *)
+function avcodec_alloc_frame(): PAVFrame;
+ cdecl; external av__codec;
+
+function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): cint;
+ cdecl; external av__codec;
+procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame);
+ cdecl; external av__codec;
+function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): cint;
+ cdecl; external av__codec;
+procedure avcodec_align_dimensions(s: PAVCodecContext; width: PCint; height: PCint);
+ cdecl; external av__codec;
+
+(**
+ * Checks if the given dimension of a picture is valid, meaning that all
+ * bytes of the picture can be addressed with a signed int.
+ *
+ * @param[in] w Width of the picture.
+ * @param[in] h Height of the picture.
+ * @return Zero if valid, a negative value if invalid.
+ *)
+function avcodec_check_dimensions(av_log_ctx: pointer; w: cuint; h: cuint): cint;
+ cdecl; external av__codec;
+function avcodec_default_get_format(s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat;
+ cdecl; external av__codec;
+
+function avcodec_thread_init(s: PAVCodecContext; thread_count: cint): cint;
+ cdecl; external av__codec;
+procedure avcodec_thread_free(s: PAVCodecContext);
+ cdecl; external av__codec;
+function avcodec_thread_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint;
+ cdecl; external av__codec;
+function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; var ret: cint; count: cint): cint;
+ cdecl; external av__codec;
+//FIXME func typedef
+
+(**
+ * Initializes the AVCodecContext to use the given AVCodec. Prior to using this
+ * function the context has to be allocated.
+ *
+ * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
+ * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
+ * retrieving a codec.
+ *
+ * @warning This function is not thread safe!
+ *
+ * @code
+ * avcodec_register_all();
+ * codec = avcodec_find_decoder(CODEC_ID_H264);
+ * if (!codec)
+ * exit(1);
+ *
+ * context = avcodec_alloc_context();
+ *
+ * if (avcodec_open(context, codec) < 0)
+ * exit(1);
+ * @endcode
+ *
+ * @param avctx The context which will be set up to use the given codec.
+ * @param codec The codec to use within the context.
+ * @return zero on success, a negative value on error
+ * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
+ *)
+function avcodec_open(avctx: PAVCodecContext; codec: PAVCodec): cint;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION < 52000000} // < 52.0.0
+(**
+ * @deprecated Use avcodec_decode_audio2() instead.
+ *)
+function avcodec_decode_audio(avctx: PAVCodecContext; samples: PSmallint;
+ var frame_size_ptr: cint;
+ buf: {const} pchar; buf_size: cint): cint;
+ cdecl; external av__codec;
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION >= 51030000} // 51.30.0
+(**
+ * Decodes an audio frame from \p buf into \p samples.
+ * The avcodec_decode_audio2() function decodes an audio frame from the input
+ * buffer \p buf of size \p buf_size. To decode it, it makes use of the
+ * audio codec which was coupled with \p avctx using avcodec_open(). The
+ * resulting decoded frame is stored in output buffer \p samples. If no frame
+ * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the
+ * decompressed frame size in \e bytes.
+ *
+ * @warning You \e must set \p frame_size_ptr to the allocated size of the
+ * output buffer before calling avcodec_decode_audio2().
+ *
+ * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
+ * the actual read bytes because some optimized bitstream readers read 32 or 64
+ * bits at once and could read over the end.
+ *
+ * @warning The end of the input buffer \p buf should be set to 0 to ensure that
+ * no overreading happens for damaged MPEG streams.
+ *
+ * @note You might have to align the input buffer \p buf and output buffer \p
+ * samples. The alignment requirements depend on the CPU: On some CPUs it isn't
+ * necessary at all, on others it won't work at all if not aligned and on others
+ * it will work but it will have an impact on performance. In practice, the
+ * bitstream should have 4 byte alignment at minimum and all sample data should
+ * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
+ * the linesize is not a multiple of 16 then there's no sense in aligning the
+ * start of the buffer to 16.
+ *
+ * @param avctx the codec context
+ * @param[out] samples the output buffer
+ * @param[in,out] frame_size_ptr the output buffer size in bytes
+ * @param[in] buf the input buffer
+ * @param[in] buf_size the input buffer size in bytes
+ * @return On error a negative value is returned, otherwise the number of bytes
+ * used or zero if no frame could be decompressed.
+ *)
+function avcodec_decode_audio2(avctx: PAVCodecContext; samples: PSmallint;
+ var frame_size_ptr: cint;
+ buf: {const} pchar; buf_size: cint): cint;
+ cdecl; external av__codec;
+{$IFEND}
+
+(**
+ * Decodes a video frame from \p buf into \p picture.
+ * The avcodec_decode_video() function decodes a video frame from the input
+ * buffer \p buf of size \p buf_size. To decode it, it makes use of the
+ * video codec which was coupled with \p avctx using avcodec_open(). The
+ * resulting decoded frame is stored in \p picture.
+ *
+ * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than
+ * the actual read bytes because some optimized bitstream readers read 32 or 64
+ * bits at once and could read over the end.
+ *
+ * @warning The end of the input buffer \p buf should be set to 0 to ensure that
+ * no overreading happens for damaged MPEG streams.
+ *
+ * @note You might have to align the input buffer \p buf and output buffer \p
+ * samples. The alignment requirements depend on the CPU: on some CPUs it isn't
+ * necessary at all, on others it won't work at all if not aligned and on others
+ * it will work but it will have an impact on performance. In practice, the
+ * bitstream should have 4 byte alignment at minimum and all sample data should
+ * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If
+ * the linesize is not a multiple of 16 then there's no sense in aligning the
+ * start of the buffer to 16.
+ *
+ * @param avctx the codec context
+ * @param[out] picture The AVFrame in which the decoded video frame will be stored.
+ * @param[in] buf the input buffer
+ * @param[in] buf_size the size of the input buffer in bytes
+ * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
+ * @return On error a negative value is returned, otherwise the number of bytes
+ * used or zero if no frame could be decompressed.
+ *)
+function avcodec_decode_video(avctx: PAVCodecContext; picture: PAVFrame;
+ var got_picture_ptr: cint;
+ buf: {const} PChar; buf_size: cint): cint;
+ cdecl; external av__codec;
+
+(* Decode a subtitle message. Return -1 if error, otherwise return the
+ * number of bytes used. If no subtitle could be decompressed,
+ * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. *)
+function avcodec_decode_subtitle(avctx: PAVCodecContext; sub: PAVSubtitle;
+ var got_sub_ptr: cint;
+ buf: {const} pchar; buf_size: cint): cint;
+ cdecl; external av__codec;
+function avcodec_parse_frame(avctx: PAVCodecContext; pdata: PPointer;
+ data_size_ptr: PCint;
+ buf: pchar; buf_size: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Encodes an audio frame from \p samples into \p buf.
+ * The avcodec_encode_audio() function encodes an audio frame from the input
+ * buffer \p samples. To encode it, it makes use of the audio codec which was
+ * coupled with \p avctx using avcodec_open(). The resulting encoded frame is
+ * stored in output buffer \p buf.
+ *
+ * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large.
+ *
+ * @param avctx the codec context
+ * @param[out] buf the output buffer
+ * @param[in] buf_size the output buffer size
+ * @param[in] samples the input buffer containing the samples
+ * The number of samples read from this buffer is frame_size*channels,
+ * both of which are defined in \p avctx.
+ * For PCM audio the number of samples read from \p samples is equal to
+ * \p buf_size * input_sample_size / output_sample_size.
+ * @return On error a negative value is returned, on success zero or the number
+ * of bytes used to encode the data read from the input buffer.
+ *)
+function avcodec_encode_audio(avctx: PAVCodecContext; buf: PByte;
+ buf_size: cint; samples: {const} PSmallint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Encodes a video frame from \p pict into \p buf.
+ * The avcodec_encode_video() function encodes a video frame from the input
+ * \p pict. To encode it, it makes use of the video codec which was coupled with
+ * \p avctx using avcodec_open(). The resulting encoded bytes representing the
+ * frame are stored in the output buffer \p buf. The input picture should be
+ * stored using a specific format, namely \c avctx.pix_fmt.
+ *
+ * @param avctx the codec context
+ * @param[out] buf the output buffer for the bitstream of encoded frame
+ * @param[in] buf_size the size of the output buffer in bytes
+ * @param[in] pict the input picture to encode
+ * @return On error a negative value is returned, on success zero or the number
+ * of bytes used from the input buffer.
+ *)
+function avcodec_encode_video(avctx: PAVCodecContext; buf: PByte;
+ buf_size: cint; pict: PAVFrame): cint;
+ cdecl; external av__codec;
+function avcodec_encode_subtitle(avctx: PAVCodecContext; buf: pchar;
+ buf_size: cint; sub: {const} PAVSubtitle): cint;
+ cdecl; external av__codec;
+
+function avcodec_close(avctx: PAVCodecContext): cint;
+ cdecl; external av__codec;
+
+procedure avcodec_register_all();
+ cdecl; external av__codec;
+
+(**
+ * Flush buffers, should be called when seeking or when switching to a different stream.
+ *)
+procedure avcodec_flush_buffers(avctx: PAVCodecContext);
+ cdecl; external av__codec;
+
+procedure avcodec_default_free_buffers(s: PAVCodecContext);
+ cdecl; external av__codec;
+
+(* misc useful functions *)
+
+(**
+ * Returns a single letter to describe the given picture type \p pict_type.
+ *
+ * @param[in] pict_type the picture type
+ * @return A single character representing the picture type.
+ *)
+function av_get_pict_type_char(pict_type: cint): char;
+ cdecl; external av__codec;
+
+(**
+ * Returns codec bits per sample.
+ *
+ * @param[in] codec_id the codec
+ * @return Number of bits per sample or zero if unknown for the given codec.
+ *)
+function av_get_bits_per_sample(codec_id: TCodecID): cint;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0
+(**
+ * Returns sample format bits per sample.
+ *
+ * @param[in] sample_fmt the sample format
+ * @return Number of bits per sample or zero if unknown for the given sample format.
+ *)
+function av_get_bits_per_sample_format(sample_fmt: TSampleFormat): cint;
+ cdecl; external av__codec;
+{$IFEND}
+
+const
+ AV_PARSER_PTS_NB = 4;
+ PARSER_FLAG_COMPLETE_FRAMES = $0001;
+
+type
+ {* frame parsing *}
+ PAVCodecParserContext = ^TAVCodecParserContext;
+ PAVCodecParser = ^TAVCodecParser;
+
+ TAVCodecParserContext = record
+ priv_data: pointer;
+ parser: PAVCodecParser;
+ frame_offset: cint64; (* offset of the current frame *)
+ cur_offset: cint64; (* current offset (incremented by each av_parser_parse()) *)
+ next_frame_offset: cint64; (* offset of the next frame *)
+ (* video info *)
+ pict_type: cint; (* XXX: put it back in AVCodecContext *)
+ repeat_pict: cint; (* XXX: put it back in AVCodecContext *)
+ pts: cint64; (* pts of the current frame *)
+ dts: cint64; (* dts of the current frame *)
+
+ (* private data *)
+ last_pts: cint64;
+ last_dts: cint64;
+ fetch_timestamp: cint;
+
+ cur_frame_start_index: cint;
+ cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+ cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+ cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+
+ flags: cint;
+
+ {$IF LIBAVCODEC_VERSION >= 51040003} // 51.40.3
+ offset: cint64; ///< byte offset from starting packet start
+ {$IFEND}
+ {$IF LIBAVCODEC_VERSION >= 51057001} // 51.57.1
+ cur_frame_end: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+ {$IFEND}
+ end;
+
+ TAVCodecParser = record
+ codec_ids: array [0..4] of cint; (* several codec IDs are permitted *)
+ priv_data_size: cint;
+ parser_init: function(s: PAVCodecParserContext): cint; cdecl;
+ parser_parse: function(s: PAVCodecParserContext; avctx: PAVCodecContext;
+ poutbuf: {const} PPointer; poutbuf_size: PCint;
+ buf: {const} pchar; buf_size: cint): cint; cdecl;
+ parser_close: procedure(s: PAVCodecParserContext); cdecl;
+ split: function(avctx: PAVCodecContext; buf: {const} pchar;
+ buf_size: cint): cint; cdecl;
+ next: PAVCodecParser;
+ end;
+
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+{
+var
+ av_first_parser: PAVCodecParser; external av__codec;
+}
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0
+function av_parser_next(c: PAVCodecParser): PAVCodecParser;
+ cdecl; external av__codec;
+{$IFEND}
+
+procedure av_register_codec_parser(parser: PAVCodecParser);
+ cdecl; external av__codec;
+
+function av_parser_init(codec_id: cint): PAVCodecParserContext;
+ cdecl; external av__codec;
+
+function av_parser_parse(s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: PCint;
+ buf: {const} pchar; buf_size: cint;
+ pts: cint64; dts: cint64): cint;
+ cdecl; external av__codec;
+function av_parser_change(s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: PCint;
+ buf: {const} pchar; buf_size: cint; keyframe: cint): cint;
+ cdecl; external av__codec;
+procedure av_parser_close(s: PAVCodecParserContext);
+ cdecl; external av__codec;
+
+type
+ PAVBitStreamFilterContext = ^TAVBitStreamFilterContext;
+ PAVBitStreamFilter = ^TAVBitStreamFilter;
+
+ TAVBitStreamFilterContext = record
+ priv_data: pointer;
+ filter: PAVBitStreamFilter;
+ parser: PAVCodecParserContext;
+ next: PAVBitStreamFilterContext;
+ end;
+
+ TAVBitStreamFilter = record
+ name: pchar;
+ priv_data_size: cint;
+ filter: function(bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: pchar;
+ poutbuf: PPointer; poutbuf_size: PCint;
+ buf: PByte; buf_size: cint; keyframe: cint): cint; cdecl;
+ {$IF LIBAVCODEC_VERSION >= 51043000} // 51.43.0
+ close: procedure(bsfc: PAVBitStreamFilterContext);
+ {$IFEND}
+ next: PAVBitStreamFilter;
+ end;
+
+procedure av_register_bitstream_filter(bsf: PAVBitStreamFilter);
+ cdecl; external av__codec;
+
+function av_bitstream_filter_init(name: pchar): PAVBitStreamFilterContext;
+ cdecl; external av__codec;
+
+function av_bitstream_filter_filter(bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: pchar;
+ poutbuf: PPointer; poutbuf_size: PCint;
+ buf: PByte; buf_size: cint; keyframe: cint): cint;
+ cdecl; external av__codec;
+procedure av_bitstream_filter_close(bsf: PAVBitStreamFilterContext);
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0
+function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter;
+ cdecl; external av__codec;
+{$IFEND}
+
+(* memory *)
+
+(**
+ * Reallocates the given block if it is not large enough, otherwise it
+ * does nothing.
+ *
+ * @see av_realloc
+ *)
+procedure av_fast_realloc(ptr: pointer; size: PCuint; min_size: cuint);
+ cdecl; external av__codec;
+
+
+{$IF LIBAVCODEC_VERSION < 51057000} // 51.57.0
+(* for static data only *)
+
+(**
+ * Frees all static arrays and resets their pointers to 0.
+ * Call this function to release all statically allocated tables.
+ *
+ * @deprecated. Code which uses av_free_static is broken/misdesigned
+ * and should correctly use static arrays
+ *
+ *)
+procedure av_free_static();
+ cdecl; external av__codec; deprecated;
+
+(**
+ * Allocation of static arrays.
+ *
+ * @warning Do not use for normal allocation.
+ *
+ * @param[in] size The amount of memory you need in bytes.
+ * @return block of memory of the requested size
+ * @deprecated. Code which uses av_mallocz_static is broken/misdesigned
+ * and should correctly use static arrays
+ *)
+procedure av_mallocz_static(size: cuint);
+ cdecl; external av__codec; deprecated; {av_malloc_attrib av_alloc_size(1)}
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION < 51035000} // 51.35.0
+procedure av_realloc_static(ptr: pointer; size: cuint);
+ cdecl; external av__codec;
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
+(**
+ * Copy image 'src' to 'dst'.
+ *)
+procedure av_picture_copy(dst: PAVPicture; src: {const} PAVPicture;
+ pix_fmt: cint; width: cint; height: cint);
+ cdecl; external av__codec;
+
+(**
+ * Crop image top and left side.
+ *)
+function av_picture_crop(dst: PAVPicture; src: {const} PAVPicture;
+ pix_fmt: cint; top_band: cint; left_band: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Pad image.
+ *)
+function av_picture_pad(dst: PAVPicture; src: {const} PAVPicture; height: cint; width: cint; pix_fmt: cint;
+ padtop: cint; padbottom: cint; padleft: cint; padright: cint; color: PCint): cint;
+ cdecl; external av__codec;
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+procedure img_copy(dst: PAVPicture; src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat; width: cint; height: cint);
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_crop(dst: PAVPicture; src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat; top_band, left_band: cint): cint;
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_pad(dst: PAVPicture; src: {const} PAVPicture; height, width: cint;
+ pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: cint;
+ color: PCint): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+function av_xiphlacing(s: PByte; v: cuint): cuint;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0
+(**
+ * Parses \p str and put in \p width_ptr and \p height_ptr the detected values.
+ *
+ * @return 0 in case of a successful parsing, a negative value otherwise
+ * @param[in] str the string to parse: it has to be a string in the format
+ * <width>x<height> or a valid video frame size abbreviation.
+ * @param[in,out] width_ptr pointer to the variable which will contain the detected
+ * frame width value
+ * @param[in,out] height_ptr pointer to the variable which will contain the detected
+ * frame height value
+ *)
+function av_parse_video_frame_size(width_ptr: PCint; height_ptr: PCint; str: {const} PChar): cint;
+ cdecl; external av__codec;
+
+(**
+ * Parses \p str and put in \p frame_rate the detected values.
+ *
+ * @return 0 in case of a successful parsing, a negative value otherwise
+ * @param[in] str the string to parse: it has to be a string in the format
+ * <frame_rate_nom>/<frame_rate_den>, a float number or a valid video rate abbreviation
+ * @param[in,out] frame_rate pointer to the AVRational which will contain the detected
+ * frame rate
+ *)
+function av_parse_video_frame_rate(frame_rate: PAVRational; str: {const} PChar): cint;
+ cdecl; external av__codec;
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION >= 51064000} // 51.64.0
+(**
+ * Logs a generic warning message about a missing feature.
+ * @param[in] avc a pointer to an arbitrary struct of which the first field is
+ * a pointer to an AVClass struct
+ * @param[in] feature string containing the name of the missing feature
+ * @param[in] want_sample indicates if samples are wanted which exhibit this feature.
+ * If \p want_sample is non-zero, additional verbage will be added to the log
+ * message which tells the user how to report samples to the development
+ * mailing list.
+ *)
+procedure av_log_missing_feature(avc: Pointer; feature: {const} PChar; want_sample: cint);
+ cdecl; external av__codec;
+{$IFEND}
+
+{* error handling *}
+
+const
+{$IFDEF UNIX}
+ ENOENT = ESysENOENT;
+ EIO = ESysEIO;
+ ENOMEM = ESysENOMEM;
+ EINVAL = ESysEINVAL;
+ EDOM = ESysEDOM;
+ ENOSYS = ESysENOSYS;
+ EILSEQ = ESysEILSEQ;
+{$ELSE}
+ ENOENT = 2;
+ EIO = 5;
+ ENOMEM = 12;
+ EINVAL = 22;
+ EDOM = 33;
+ {$IFDEF MSWINDOWS}
+ // Note: we assume that ffmpeg was compiled with MinGW.
+ // This must be changed if DLLs were compiled with cygwin.
+ ENOSYS = 40; // MSVC/MINGW: 40, CYGWIN: 88, LINUX/FPC: 38
+ EILSEQ = 42; // MSVC/MINGW: 42, CYGWIN: 138, LINUX/FPC: 84
+ {$ENDIF}
+{$ENDIF}
+
+const
+{$IF EINVAL > 0}
+ AVERROR_SIGN = -1;
+{$ELSE}
+ {* Some platforms have E* and errno already negated. *}
+ AVERROR_SIGN = 1;
+{$IFEND}
+
+(*
+#if EINVAL > 0
+#define AVERROR(e) (-(e)) {**< Returns a negative error code from a POSIX error code, to return from library functions. *}
+#define AVUNERROR(e) (-(e)) {**< Returns a POSIX error code from a library function error return value. *}
+#else
+{* Some platforms have E* and errno already negated. *}
+#define AVERROR(e) (e)
+#define AVUNERROR(e) (e)
+#endif
+*)
+
+const
+ AVERROR_UNKNOWN = AVERROR_SIGN * EINVAL; (**< unknown error *)
+ AVERROR_IO = AVERROR_SIGN * EIO; (**< I/O error *)
+ AVERROR_NUMEXPECTED = AVERROR_SIGN * EDOM; (**< Number syntax expected in filename. *)
+ AVERROR_INVALIDDATA = AVERROR_SIGN * EINVAL; (**< invalid data found *)
+ AVERROR_NOMEM = AVERROR_SIGN * ENOMEM; (**< not enough memory *)
+ AVERROR_NOFMT = AVERROR_SIGN * EILSEQ; (**< unknown format *)
+ AVERROR_NOTSUPP = AVERROR_SIGN * ENOSYS; (**< Operation not supported. *)
+ AVERROR_NOENT = AVERROR_SIGN * ENOENT; {**< No such file or directory. *}
+ // Note: function calls as constant-initializers are invalid
+ //AVERROR_PATCHWELCOME = -MKTAG('P','A','W','E'); {**< Not yet implemented in FFmpeg. Patches welcome. *}
+ AVERROR_PATCHWELCOME = -(ord('P') or (ord('A') shl 8) or (ord('W') shl 16) or (ord('E') shl 24));
+
+implementation
+
+end.
diff --git a/unicode/src/lib/ffmpeg/avformat.pas b/unicode/src/lib/ffmpeg/avformat.pas
new file mode 100644
index 00000000..c516aea0
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/avformat.pas
@@ -0,0 +1,1438 @@
+(*
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversion of libavformat/avformat.h
+ * Min. version: 50.5.0 , revision 6577, Sat Oct 7 15:30:46 2006 UTC
+ * Max. version: 52.22.1, revision 15441, Sat Sep 27 20:05:12 2008 UTC
+ *)
+
+unit avformat;
+
+{$IFDEF FPC}
+ {$MODE DELPHI }
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$I switches.inc} (* for the HasInline define *)
+
+{$IFDEF DARWIN}
+ {$linklib libavformat}
+{$ENDIF}
+
+interface
+
+uses
+ ctypes,
+ avcodec,
+ avutil,
+ avio,
+ rational,
+ UConfig;
+
+const
+ (* Max. supported version by this header *)
+ LIBAVFORMAT_MAX_VERSION_MAJOR = 52;
+ LIBAVFORMAT_MAX_VERSION_MINOR = 22;
+ LIBAVFORMAT_MAX_VERSION_RELEASE = 1;
+ LIBAVFORMAT_MAX_VERSION = (LIBAVFORMAT_MAX_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVFORMAT_MAX_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVFORMAT_MAX_VERSION_RELEASE * VERSION_RELEASE);
+
+ (* Min. supported version by this header *)
+ LIBAVFORMAT_MIN_VERSION_MAJOR = 50;
+ LIBAVFORMAT_MIN_VERSION_MINOR = 5;
+ LIBAVFORMAT_MIN_VERSION_RELEASE = 0;
+ LIBAVFORMAT_MIN_VERSION = (LIBAVFORMAT_MIN_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVFORMAT_MIN_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVFORMAT_MIN_VERSION_RELEASE * VERSION_RELEASE);
+
+(* Check if linked versions are supported *)
+{$IF (LIBAVFORMAT_VERSION < LIBAVFORMAT_MIN_VERSION)}
+ {$MESSAGE Error 'Linked version of libavformat is too old!'}
+{$IFEND}
+
+(* Check if linked versions are supported *)
+{$IF (LIBAVFORMAT_VERSION > LIBAVFORMAT_MAX_VERSION)}
+ {$MESSAGE Error 'Linked version of libavformat is not yet supported!'}
+{$IFEND}
+
+{$IF LIBAVFORMAT_VERSION >= 52020000} // 52.20.0
+(**
+ * Returns the LIBAVFORMAT_VERSION_INT constant.
+ *)
+function avformat_version(): cuint;
+ cdecl; external av__format;
+{$IFEND}
+
+
+type
+ PAVFile = Pointer;
+
+(* packet functions *)
+
+type
+ PAVPacket = ^TAVPacket;
+ TAVPacket = record
+ (**
+ * Presentation time stamp in time_base units.
+ * This is the time at which the decompressed packet will be presented
+ * to the user.
+ * Can be AV_NOPTS_VALUE if it is not stored in the file.
+ * pts MUST be larger or equal to dts as presentation can not happen before
+ * decompression, unless one wants to view hex dumps. Some formats misuse
+ * the terms dts and pts/cts to mean something different, these timestamps
+ * must be converted to true pts/dts before they are stored in AVPacket.
+ *)
+ pts: cint64;
+ (**
+ * Decompression time stamp in time_base units.
+ * This is the time at which the packet is decompressed.
+ * Can be AV_NOPTS_VALUE if it is not stored in the file.
+ *)
+ dts: cint64;
+ data: PChar;
+ size: cint;
+ stream_index: cint;
+ flags: cint;
+ (**
+ * Duration of this packet in time_base units, 0 if unknown.
+ * Equals next_pts - this_pts in presentation order.
+ *)
+ duration: cint;
+ destruct: procedure (p: PAVPacket); cdecl;
+ priv: pointer;
+ pos: cint64; ///< byte position in stream, -1 if unknown
+
+ {$IF LIBAVFORMAT_VERSION >= 52022000} // 52.22.0
+ (**
+ * Time difference in stream time base units from the pts of this
+ * packet to the point at which the output from the decoder has converged
+ * independent from the availability of previous frames. That is, the
+ * frames are virtually identical no matter if decoding started from
+ * the very first frame or from this keyframe.
+ * Is AV_NOPTS_VALUE if unknown.
+ * This field is not the display duration of the current packet.
+ *
+ * The purpose of this field is to allow seeking in streams that have no
+ * keyframes in the conventional sense. It corresponds to the
+ * recovery point SEI in H.264 and match_time_delta in NUT. It is also
+ * essential for some types of subtitle streams to ensure that all
+ * subtitles are correctly displayed after seeking.
+ *)
+ convergence_duration: cint64;
+ {$IFEND}
+ end;
+
+const
+ PKT_FLAG_KEY = $0001;
+
+procedure av_destruct_packet_nofree(var pkt: TAVPacket);
+ cdecl; external av__format;
+
+(**
+ * Default packet destructor.
+ *)
+procedure av_destruct_packet(var pkt: TAVPacket);
+ cdecl; external av__format;
+
+(**
+ * Initialize optional fields of a packet with default values.
+ *
+ * @param pkt packet
+ *)
+procedure av_init_packet(var pkt: TAVPacket);
+{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2
+ cdecl; external av__format;
+{$IFEND}
+
+(**
+ * Allocate the payload of a packet and initialize its fields with
+ * default values.
+ *
+ * @param pkt packet
+ * @param size wanted payload size
+ * @return 0 if OK, AVERROR_xxx otherwise
+ *)
+function av_new_packet(var pkt: TAVPacket; size: cint): cint;
+ cdecl; external av__format;
+
+(**
+ * Allocate and read the payload of a packet and initialize its fields with
+ * default values.
+ *
+ * @param pkt packet
+ * @param size desired payload size
+ * @return >0 (read size) if OK, AVERROR_xxx otherwise
+ *)
+function av_get_packet(s: PByteIOContext; var pkt: TAVPacket; size: cint): cint;
+ cdecl; external av__format;
+
+(**
+ * @warning This is a hack - the packet memory allocation stuff is broken. The
+ * packet is allocated if it was not really allocated.
+ *)
+function av_dup_packet(pkt: PAVPacket): cint;
+ cdecl; external av__format;
+
+(**
+ * Free a packet.
+ *
+ * @param pkt packet to free
+ *)
+procedure av_free_packet(pkt: PAVPacket); {$IFDEF HasInline}inline;{$ENDIF}
+
+(*************************************************)
+(* fractional numbers for exact pts handling *)
+
+type
+ (**
+ * The exact value of the fractional number is: 'val + num / den'.
+ * num is assumed to be 0 <= num < den.
+ * @deprecated Use AVRational instead.
+ *)
+ PAVFrac = ^TAVFrac;
+ TAVFrac = record
+ val, num, den: cint64;
+ end; {deprecated}
+
+(*************************************************)
+(* input/output formats *)
+
+type
+ (** This structure contains the data a format has to probe a file. *)
+ TAVProbeData = record
+ filename: pchar;
+ buf: pchar;
+ buf_size: cint;
+ end;
+
+const
+ AVPROBE_SCORE_MAX = 100; ///< Maximum score, half of that is used for file-extension-based detection.
+ AVPROBE_PADDING_SIZE = 32; ///< extra allocated bytes at the end of the probe buffer
+
+ //! Demuxer will use url_fopen, no opened file should be provided by the caller.
+ AVFMT_NOFILE = $0001;
+ AVFMT_NEEDNUMBER = $0002; (**< Needs '%d' in filename. *)
+ AVFMT_SHOW_IDS = $0008; (**< Show format stream IDs numbers. *)
+ AVFMT_RAWPICTURE = $0020; (**< Format wants AVPicture structure for
+ raw picture data. *)
+ AVFMT_GLOBALHEADER = $0040; (**< Format wants global header. *)
+ AVFMT_NOTIMESTAMPS = $0080; (**< Format does not need / have any timestamps. *)
+ AVFMT_GENERIC_INDEX = $0100; (**< Use generic index building code. *)
+ AVFMT_TS_DISCONT = $0200; (**< Format allows timestamp discontinuities. *)
+
+ // used by AVIndexEntry
+ AVINDEX_KEYFRAME = $0001;
+
+ AVFMTCTX_NOHEADER = $0001; (**< signal that no header is present
+ (streams are added dynamically) *)
+ MAX_STREAMS = 20;
+
+ AVFMT_NOOUTPUTLOOP = -1;
+ AVFMT_INFINITEOUTPUTLOOP = 0;
+ AVFMT_FLAG_GENPTS = $0001; ///< Generate pts if missing even if it requires parsing future frames.
+ AVFMT_FLAG_IGNIDX = $0002; ///< Ignore index.
+ AVFMT_FLAG_NONBLOCK = $0004; ///< Do not block when reading packets from input.
+
+ // used by AVStream
+ MAX_REORDER_DELAY = 16;
+
+ // used by TAVProgram
+ AV_PROGRAM_RUNNING = 1;
+
+
+ AV_DISPOSITION_DEFAULT = $0001;
+ AV_DISPOSITION_DUB = $0002;
+ AV_DISPOSITION_ORIGINAL = $0004;
+ AV_DISPOSITION_COMMENT = $0008;
+ AV_DISPOSITION_LYRICS = $0010;
+ AV_DISPOSITION_KARAOKE = $0020;
+
+ // used by TAVFormatContext.debug
+ FF_FDEBUG_TS = 0001;
+
+type
+ PPAVCodecTag = ^PAVCodecTag;
+ PAVCodecTag = Pointer;
+
+ PPAVFormatContext = ^PAVFormatContext;
+ PAVFormatContext = ^TAVFormatContext;
+
+ PAVFormatParameters = ^TAVFormatParameters;
+
+ PAVOutputFormat = ^TAVOutputFormat;
+ PAVProbeData = ^TAVProbeData;
+
+ PAVInputFormat = ^TAVInputFormat;
+ PAVIndexEntry = ^TAVIndexEntry;
+
+ PAVStream = ^TAVStream;
+ PAVPacketList = ^TAVPacketList;
+
+ PPAVProgram = ^PAVProgram;
+ PAVProgram = ^TAVProgram;
+
+ {$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0
+ PAVImageFormat = ^TAVImageFormat;
+ PAVImageInfo = ^TAVImageInfo;
+ {$IFEND}
+
+ PAVChapter = ^TAVChapter;
+ TAVChapter = record
+ id: cint; ///< unique ID to identify the chapter
+ time_base: TAVRational; ///< time base in which the start/end timestamps are specified
+ start, end_: cint64; ///< chapter start/end time in time_base units
+ title: PChar; ///< chapter title
+ end;
+ TAVChapterArray = array[0..(MaxInt div SizeOf(TAVChapter))-1] of TAVChapter;
+ PAVChapterArray = ^TAVChapterArray;
+
+ TAVFormatParameters = record
+ time_base: TAVRational;
+ sample_rate: cint;
+ channels: cint;
+ width: cint;
+ height: cint;
+ pix_fmt: TAVPixelFormat;
+ {$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0
+ image_format: PAVImageFormat;
+ {$IFEND}
+ channel: cint; (**< Used to select DV channel. *)
+ {$IF LIBAVFORMAT_VERSION_MAJOR < 52}
+ device: pchar; (* video, audio or DV device, if LIBAVFORMAT_VERSION_INT < (52<<16) *)
+ {$IFEND}
+ standard: pchar; (**< TV standard, NTSC, PAL, SECAM *)
+ { Delphi does not support bit fields -> use bf_flags instead
+ unsigned int mpeg2ts_raw:1; (**< Force raw MPEG-2 transport stream output, if possible. *)
+ unsigned int mpeg2ts_compute_pcr:1; (**< Compute exact PCR for each transport
+ stream packet (only meaningful if
+ mpeg2ts_raw is TRUE). *)
+ unsigned int initial_pause:1; (**< Do not begin to play the stream
+ immediately (RTSP only). *)
+ unsigned int prealloced_context:1;
+ }
+ bf_flags: byte; // 0:mpeg2ts_raw/1:mpeg2ts_compute_pcr/2:initial_pause/3:prealloced_context
+ {$IF LIBAVFORMAT_VERSION_MAJOR < 53}
+ video_codec_id: TCodecID;
+ audio_codec_id: TCodecID;
+ {$IFEND}
+ end;
+
+ TAVOutputFormat = record
+ name: pchar;
+ (**
+ * Descriptive name for the format, meant to be more human-readable
+ * than \p name. You \e should use the NULL_IF_CONFIG_SMALL() macro
+ * to define it.
+ *)
+ long_name: pchar;
+ mime_type: pchar;
+ extensions: pchar; (**< comma-separated filename extensions *)
+ (** Size of private data so that it can be allocated in the wrapper. *)
+ priv_data_size: cint;
+ (* output support *)
+ audio_codec: TCodecID; (**< default audio codec *)
+ video_codec: TCodecID; (**< default video codec *)
+ write_header: function (c: PAVFormatContext): cint; cdecl;
+ write_packet: function (c: PAVFormatContext; pkt: PAVPacket): cint; cdecl;
+ write_trailer: function (c: PAVFormatContext): cint; cdecl;
+ (** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER *)
+ flags: cint;
+ (** Currently only used to set pixel format if not YUV420P. *)
+ set_parameters: function (c: PAVFormatContext; f: PAVFormatParameters): cint; cdecl;
+ interleave_packet: function (s: PAVFormatContext; out_: PAVPacket;
+ in_: PAVPacket; flush: cint): cint; cdecl;
+
+ {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0
+ (**
+ * List of supported codec_id-codec_tag pairs, ordered by "better
+ * choice first". The arrays are all CODEC_ID_NONE terminated.
+ *)
+ codec_tag: {const} PPAVCodecTag;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2
+ subtitle_codec: TCodecID; (**< default subtitle codec *)
+ {$IFEND}
+
+ (* private fields *)
+ next: PAVOutputFormat;
+ end;
+
+ TAVInputFormat = record
+ name: pchar;
+ (**
+ * Descriptive name for the format, meant to be more human-readable
+ * than \p name. You \e should use the NULL_IF_CONFIG_SMALL() macro
+ * to define it.
+ *)
+ long_name: pchar;
+ (** Size of private data so that it can be allocated in the wrapper. *)
+ priv_data_size: cint;
+ (**
+ * Tell if a given file has a chance of being parsed by this format.
+ * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes
+ * big so you do not have to check for that unless you need more.
+ *)
+ read_probe: function (p: PAVProbeData): cint; cdecl;
+ (** Read the format header and initialize the AVFormatContext
+ structure. Return 0 if OK. 'ap' if non-NULL contains
+ additional parameters. Only used in raw format right
+ now. 'av_new_stream' should be called to create new streams. *)
+ read_header: function (c: PAVFormatContext; ap: PAVFormatParameters): cint; cdecl;
+ (** Read one packet and put it in 'pkt'. pts and flags are also
+ set. 'av_new_stream' can be called only if the flag
+ AVFMTCTX_NOHEADER is used. *)
+ read_packet: function (c: PAVFormatContext; var pkt: TAVPacket): cint; cdecl;
+ (** Close the stream. The AVFormatContext and AVStreams are not
+ freed by this function *)
+ read_close: function (c: PAVFormatContext): cint; cdecl;
+ (**
+ * Seek to a given timestamp relative to the frames in
+ * stream component stream_index.
+ * @param stream_index must not be -1
+ * @param flags selects which direction should be preferred if no exact
+ * match is available
+ * @return >= 0 on success (but not necessarily the new offset)
+ *)
+ read_seek: function (c: PAVFormatContext; stream_index: cint;
+ timestamp: cint64; flags: cint): cint; cdecl;
+ (**
+ * Gets the next timestamp in stream[stream_index].time_base units.
+ * @return the timestamp or AV_NOPTS_VALUE if an error occurred
+ *)
+ read_timestamp: function (s: PAVFormatContext; stream_index: cint;
+ pos: pint64; pos_limit: cint64): cint64; cdecl;
+ (** Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER. *)
+ flags: cint;
+ (** If extensions are defined, then no probe is done. You should
+ usually not use extension format guessing because it is not
+ reliable enough *)
+ extensions: pchar;
+ (** General purpose read-only value that the format can use. *)
+ value: cint;
+
+ (** Start/resume playing - only meaningful if using a network-based format
+ (RTSP). *)
+ read_play: function (c: PAVFormatContext): cint; cdecl;
+
+ (** Pause playing - only meaningful if using a network-based format
+ (RTSP). *)
+ read_pause: function (c: PAVFormatContext): cint; cdecl;
+
+ {$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0
+ codec_tag: {const} PPAVCodecTag;
+ {$IFEND}
+
+ (* private fields *)
+ next: PAVInputFormat;
+ end;
+
+ TAVStreamParseType = (
+ AVSTREAM_PARSE_NONE,
+ AVSTREAM_PARSE_FULL, (**< full parsing and repack *)
+ AVSTREAM_PARSE_HEADERS, (**< Only parse headers, do not repack. *)
+ AVSTREAM_PARSE_TIMESTAMPS (**< full parsing and interpolation of timestamps for frames not starting on a packet boundary *)
+ );
+
+ TAVIndexEntry = record
+ pos: cint64;
+ timestamp: cint64;
+ { Delphi doesn't support bitfields -> use flags_size instead
+ int flags:2;
+ int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs. 32 bytes due to possible 8-byte alignment).
+ }
+ flags_size: cint; // 0..1: flags, 2..31: size
+ min_distance: cint; (**< Minimum distance between this and the previous keyframe, used to avoid unneeded searching. *)
+ end;
+
+ (**
+ * Stream structure.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVStream) must not be used outside libav*.
+ *)
+ TAVStream = record
+ index: cint; (**< stream index in AVFormatContext *)
+ id: cint; (**< format-specific stream ID *)
+ codec: PAVCodecContext; (**< codec context *)
+ (**
+ * Real base frame rate of the stream.
+ * This is the lowest frame rate with which all timestamps can be
+ * represented accurately (it is the least common multiple of all
+ * frame rates in the stream). Note, this value is just a guess!
+ * For example if the timebase is 1/90000 and all frames have either
+ * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1.
+ *)
+ r_frame_rate: TAVRational;
+ priv_data: pointer;
+
+ (* internal data used in av_find_stream_info() *)
+ first_dts: cint64;
+ {$IF LIBAVFORMAT_VERSION_MAJOR < 52}
+ codec_info_nb_frames: cint;
+ {$IFEND}
+
+ (** encoding: pts generation when outputting stream *)
+ pts: TAVFrac;
+ (**
+ * This is the fundamental unit of time (in seconds) in terms
+ * of which frame timestamps are represented. For fixed-fps content,
+ * time base should be 1/frame rate and timestamp increments should be 1.
+ *)
+ time_base: TAVRational;
+ pts_wrap_bits: cint; (* number of bits in pts (used for wrapping control) *)
+ (* ffmpeg.c private use *)
+ stream_copy: cint; (**< If set, just copy stream. *)
+ discard: TAVDiscard; ///< Selects which packets can be discarded at will and do not need to be demuxed.
+ //FIXME move stuff to a flags field?
+ (** Quality, as it has been removed from AVCodecContext and put in AVVideoFrame.
+ * MN:dunno if thats the right place, for it *)
+ quality: cfloat;
+ (**
+ * Decoding: pts of the first frame of the stream, in stream time base.
+ * Only set this if you are absolutely 100% sure that the value you set
+ * it to really is the pts of the first frame.
+ * This may be undefined (AV_NOPTS_VALUE).
+ * @note The ASF header does NOT contain a correct start_time the ASF
+ * demuxer must NOT set this.
+ *)
+ start_time: cint64;
+ (**
+ * Decoding: duration of the stream, in stream time base.
+ * If a source file does not specify a duration, but does specify
+ * a bitrate, this value will be estimated from bitrate and file size.
+ *)
+ duration: cint64;
+
+ language: array [0..3] of char; (* ISO 639 3-letter language code (empty string if undefined) *)
+
+ (* av_read_frame() support *)
+ need_parsing: TAVStreamParseType;
+ parser: PAVCodecParserContext;
+
+ cur_dts: cint64;
+ last_IP_duration: cint;
+ last_IP_pts: cint64;
+ (* av_seek_frame() support *)
+ index_entries: PAVIndexEntry; (**< Only used if the format does not
+ support seeking natively. *)
+ nb_index_entries: cint;
+ index_entries_allocated_size: cuint;
+
+ nb_frames: cint64; ///< number of frames in this stream if known or 0
+
+ {$IF (LIBAVFORMAT_VERSION >= 50006000) and (LIBAVFORMAT_VERSION_MAJOR < 53)} // 50.6.0 - 53.0.0
+ unused: array [0..4] of cint64;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52006000} // 52.6.0
+ filename: PChar; (**< source filename of the stream *)
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52008000} // 52.8.0
+ disposition: cint; (**< AV_DISPOSITION_* bitfield *)
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52019000} // 52.19.0
+ probe_data: TAVProbeData;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52021000} // 52.21.0
+ pts_buffer: array [0..MAX_REORDER_DELAY] of cint64;
+
+ (**
+ * sample aspect ratio (0 if unknown)
+ * - encoding: Set by user.
+ * - decoding: Set by libavformat.
+ *)
+ sample_aspect_ratio: TAVRational;
+ {$IFEND}
+ end;
+
+ (**
+ * Format I/O context.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVFormatContext) must not be used outside libav*.
+ *)
+ TAVFormatContext = record
+ av_class: PAVClass; (**< Set by av_alloc_format_context. *)
+ (* Can only be iformat or oformat, not both at the same time. *)
+ iformat: PAVInputFormat;
+ oformat: PAVOutputFormat;
+ priv_data: pointer;
+
+ {$IF LIBAVFORMAT_VERSION_MAJOR >= 52}
+ pb: PByteIOContext;
+ {$ELSE}
+ pb: TByteIOContext;
+ {$IFEND}
+
+ nb_streams: cuint;
+ streams: array [0..MAX_STREAMS - 1] of PAVStream;
+ filename: array [0..1023] of char; (* input or output filename *)
+ (* stream info *)
+ timestamp: cint64;
+ title: array [0..511] of char;
+ author: array [0..511] of char;
+ copyright: array [0..511] of char;
+ comment: array [0..511] of char;
+ album: array [0..511] of char;
+ year: cint; (**< ID3 year, 0 if none *)
+ track: cint; (**< track number, 0 if none *)
+ genre: array [0..31] of char; (**< ID3 genre *)
+
+ ctx_flags: cint; (**< Format-specific flags, see AVFMTCTX_xx *)
+ (* private data for pts handling (do not modify directly). *)
+ (** This buffer is only needed when packets were already buffered but
+ not decoded, for example to get the codec parameters in MPEG
+ streams. *)
+ packet_buffer: PAVPacketList;
+
+ (** Decoding: position of the first frame of the component, in
+ AV_TIME_BASE fractional seconds. NEVER set this value directly:
+ It is deduced from the AVStream values. *)
+ start_time: cint64;
+ (** Decoding: duration of the stream, in AV_TIME_BASE fractional
+ seconds. NEVER set this value directly: it is deduced from the
+ AVStream values. *)
+ duration: cint64;
+ (** decoding: total file size, 0 if unknown *)
+ file_size: cint64;
+ (** Decoding: total stream bitrate in bit/s, 0 if not
+ available. Never set it directly if the file_size and the
+ duration are known as ffmpeg can compute it automatically. *)
+ bit_rate: cint;
+
+ (* av_read_frame() support *)
+ cur_st: PAVStream;
+ cur_ptr: pbyte;
+ cur_len: cint;
+ cur_pkt: TAVPacket;
+
+ (* av_seek_frame() support *)
+ data_offset: cint64; (* offset of the first packet *)
+ index_built: cint;
+
+ mux_rate: cint;
+ packet_size: cint;
+ preload: cint;
+ max_delay: cint;
+
+ (* number of times to loop output in formats that support it *)
+ loop_output: cint;
+
+ flags: cint;
+ loop_input: cint;
+
+ {$IF LIBAVFORMAT_VERSION >= 50006000} // 50.6.0
+ (** Decoding: size of data to probe; encoding: unused. *)
+ probesize: cuint;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 51009000} // 51.9.0
+ (**
+ * Maximum time (in AV_TIME_BASE units) during which the input should
+ * be analyzed in av_find_stream_info().
+ *)
+ max_analyze_duration: cint;
+
+ key: pbyte;
+ keylen : cint;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 51014000} // 51.14.0
+ nb_programs: cuint;
+ programs: PPAVProgram;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0
+ (**
+ * Forced video codec_id.
+ * Demuxing: Set by user.
+ *)
+ video_codec_id: TCodecID;
+ (**
+ * Forced audio codec_id.
+ * Demuxing: Set by user.
+ *)
+ audio_codec_id: TCodecID;
+ (**
+ * Forced subtitle codec_id.
+ * Demuxing: Set by user.
+ *)
+ subtitle_codec_id: TCodecID;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0
+ (**
+ * Maximum amount of memory in bytes to use per stream for the index.
+ * If the needed index exceeds this size, entries will be discarded as
+ * needed to maintain a smaller size. This can lead to slower or less
+ * accurate seeking (depends on demuxer).
+ * Demuxers for which a full in-memory index is mandatory will ignore
+ * this.
+ * muxing : unused
+ * demuxing: set by user
+ *)
+ max_index_size: cuint;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52009000} // 52.9.0
+ (**
+ * Maximum amount of memory in bytes to use for buffering frames
+ * obtained from realtime capture devices.
+ *)
+ max_picture_buffer: cuint;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0
+ nb_chapters: cuint;
+ chapters: PAVChapterArray;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52016000} // 52.16.0
+ (**
+ * Flags to enable debugging.
+ *)
+ debug: cint;
+ {$IFEND}
+
+ {$IF LIBAVFORMAT_VERSION >= 52019000} // 52.19.0
+ (**
+ * Raw packets from the demuxer, prior to parsing and decoding.
+ * This buffer is used for buffering packets until the codec can
+ * be identified, as parsing cannot be done without knowing the
+ * codec.
+ *)
+ raw_packet_buffer: PAVPacketList;
+ raw_packet_buffer_end: PAVPacketList;
+
+ packet_buffer_end: PAVPacketList;
+ {$IFEND}
+ end;
+
+ (**
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVProgram) must not be used outside libav*.
+ *)
+ TAVProgram = record
+ id : cint;
+ provider_name : PChar; ///< network name for DVB streams
+ name : PChar; ///< service name for DVB streams
+ flags : cint;
+ discard : TAVDiscard; ///< selects which program to discard and which to feed to the caller
+ {$IF LIBAVFORMAT_VERSION >= 51016000} // 51.16.0
+ stream_index : PCardinal;
+ nb_stream_indexes : PCardinal;
+ {$IFEND}
+ end;
+
+ TAVPacketList = record
+ pkt: TAVPacket;
+ next: PAVPacketList;
+ end;
+
+{$IF LIBAVFORMAT_VERSION < 51006000} // 51.6.0
+ (* still image support *)
+ PAVInputImageContext = pointer; {deprecated}
+
+ (* still image support *)
+ TAVImageInfo = record
+ pix_fmt: TAVPixelFormat; (* requested pixel format *)
+ width: cint; (* requested width *)
+ height: cint; (* requested height *)
+ interleaved: cint; (* image is interleaved (e.g. interleaved GIF) *)
+ pict: TAVPicture; (* returned allocated image *)
+ end; {deprecated}
+
+ TAVImageFormat = record
+ name: pchar;
+ extensions: pchar;
+ (* tell if a given file has a chance of being parsing by this format *)
+ img_probe: function (d: PAVProbeData): cint; cdecl;
+ (* read a whole image. 'alloc_cb' is called when the image size is
+ known so that the caller can allocate the image. If 'allo_cb'
+ returns non zero, then the parsing is aborted. Return '0' if
+ OK. *)
+ img_read: function (b: PByteIOContext; alloc_cb: pointer; ptr: pointer): cint; cdecl;
+ (* write the image *)
+ supported_pixel_formats: cint; (* mask of supported formats for output *)
+ img_write: function (b: PByteIOContext; i: PAVImageInfo): cint; cdecl;
+ flags: cint;
+ next: PAVImageFormat;
+ end; {deprecated}
+
+procedure av_register_image_format(img_fmt: PAVImageFormat);
+ cdecl; external av__format; deprecated;
+
+function av_probe_image_format(pd: PAVProbeData): PAVImageFormat;
+ cdecl; external av__format; deprecated;
+
+function guess_image_format(filename: pchar): PAVImageFormat;
+ cdecl; external av__format; deprecated;
+
+function av_read_image(pb: PByteIOContext; filename: pchar;
+ fmt: PAVImageFormat;
+ alloc_cb: pointer; opaque: pointer): cint;
+ cdecl; external av__format; deprecated;
+
+function av_write_image(pb: PByteIOContext; fmt: PAVImageFormat; img: PAVImageInfo): cint;
+ cdecl; external av__format; deprecated;
+{$IFEND}
+
+{$IF LIBAVFORMAT_VERSION_MAJOR < 53}
+{
+var
+ first_iformat: PAVInputFormat; external av__format;
+ first_oformat: PAVOutputFormat; external av__format;
+}
+{$IFEND}
+
+{$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0
+function av_iformat_next(f: PAVInputFormat): PAVInputFormat;
+ cdecl; external av__format;
+function av_oformat_next(f: PAVOutputFormat): PAVOutputFormat;
+ cdecl; external av__format;
+{$IFEND}
+
+function av_guess_image2_codec(filename: {const} PChar): TCodecID;
+ cdecl; external av__format;
+
+(* XXX: use automatic init with either ELF sections or C file parser *)
+(* modules *)
+
+(* utils.c *)
+procedure av_register_input_format(format: PAVInputFormat);
+ cdecl; external av__format;
+
+procedure av_register_output_format(format: PAVOutputFormat);
+ cdecl; external av__format;
+
+function guess_stream_format(short_name: pchar;
+ filename: pchar;
+ mime_type: pchar): PAVOutputFormat;
+ cdecl; external av__format;
+
+function guess_format(short_name: pchar;
+ filename: pchar;
+ mime_type: pchar): PAVOutputFormat;
+ cdecl; external av__format;
+
+(**
+ * Guesses the codec ID based upon muxer and filename.
+ *)
+function av_guess_codec(fmt: PAVOutputFormat; short_name: pchar;
+ filename: pchar; mime_type: pchar;
+ type_: TCodecType): TCodecID;
+ cdecl; external av__format;
+
+(**
+ * Send a nice hexadecimal dump of a buffer to the specified file stream.
+ *
+ * @param f The file stream pointer where the dump should be sent to.
+ * @param buf buffer
+ * @param size buffer size
+ *
+ * @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log
+ *)
+procedure av_hex_dump(f: PAVFile; buf: pchar; size: cint);
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 51011000} // 51.11.0
+(**
+ * Send a nice hexadecimal dump of a buffer to the log.
+ *
+ * @param avcl A pointer to an arbitrary struct of which the first field is a
+ * pointer to an AVClass struct.
+ * @param level The importance level of the message, lower values signifying
+ * higher importance.
+ * @param buf buffer
+ * @param size buffer size
+ *
+ * @see av_hex_dump, av_pkt_dump, av_pkt_dump_log
+ *)
+procedure av_hex_dump_log(avcl: Pointer; level: cint; buf: PChar; size: cint);
+ cdecl; external av__format;
+{$IFEND}
+
+(**
+ * Send a nice dump of a packet to the specified file stream.
+ *
+ * @param f The file stream pointer where the dump should be sent to.
+ * @param pkt packet to dump
+ * @param dump_payload True if the payload must be displayed, too.
+ *)
+procedure av_pkt_dump(f: PAVFile; pkt: PAVPacket; dump_payload: cint);
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 51011000} // 51.11.0
+(**
+ * Send a nice dump of a packet to the log.
+ *
+ * @param avcl A pointer to an arbitrary struct of which the first field is a
+ * pointer to an AVClass struct.
+ * @param level The importance level of the message, lower values signifying
+ * higher importance.
+ * @param pkt packet to dump
+ * @param dump_payload True if the payload must be displayed, too.
+ *)
+procedure av_pkt_dump_log(avcl: Pointer; level: cint; pkt: PAVPacket; dump_payload: cint);
+ cdecl; external av__format;
+{$IFEND}
+
+procedure av_register_all();
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 51008000} // 51.8.0
+(** codec tag <-> codec id *)
+function av_codec_get_id(var tags: PAVCodecTag; tag: cuint): TCodecID;
+ cdecl; external av__format;
+function av_codec_get_tag(var tags: PAVCodecTag; id: TCodecID): cuint;
+ cdecl; external av__format;
+{$IFEND}
+
+(* media file input *)
+
+(**
+ * Finds AVInputFormat based on the short name of the input format.
+ *)
+function av_find_input_format(short_name: pchar): PAVInputFormat;
+ cdecl; external av__format;
+
+(**
+ * Guess file format.
+ *
+ * @param is_opened Whether the file is already opened; determines whether
+ * demuxers with or without AVFMT_NOFILE are probed.
+ *)
+function av_probe_input_format(pd: PAVProbeData; is_opened: cint): PAVInputFormat;
+ cdecl; external av__format;
+
+(**
+ * Allocates all the structures needed to read an input stream.
+ * This does not open the needed codecs for decoding the stream[s].
+ *)
+function av_open_input_stream(ic_ptr: PAVFormatContext;
+ pb: PByteIOContext; filename: pchar;
+ fmt: PAVInputFormat; ap: PAVFormatParameters): cint;
+ cdecl; external av__format;
+
+(**
+ * Open a media file as input. The codecs are not opened. Only the file
+ * header (if present) is read.
+ *
+ * @param ic_ptr The opened media file handle is put here.
+ * @param filename filename to open
+ * @param fmt If non-NULL, force the file format to use.
+ * @param buf_size optional buffer size (zero if default is OK)
+ * @param ap Additional parameters needed when opening the file
+ * (NULL if default).
+ * @return 0 if OK, AVERROR_xxx otherwise
+ *)
+function av_open_input_file(var ic_ptr: PAVFormatContext; filename: pchar;
+ fmt: PAVInputFormat; buf_size: cint;
+ ap: PAVFormatParameters): cint;
+ cdecl; external av__format;
+
+(**
+ * Allocate an AVFormatContext.
+ * Can be freed with av_free() but do not forget to free everything you
+ * explicitly allocated as well!
+ *)
+function av_alloc_format_context(): PAVFormatContext;
+ cdecl; external av__format;
+
+(**
+ * Read packets of a media file to get stream information. This
+ * is useful for file formats with no headers such as MPEG. This
+ * function also computes the real frame rate in case of MPEG-2 repeat
+ * frame mode.
+ * The logical file position is not changed by this function;
+ * examined packets may be buffered for later processing.
+ *
+ * @param ic media file handle
+ * @return >=0 if OK, AVERROR_xxx on error
+ * @todo Let the user decide somehow what information is needed so that
+ * we do not waste time getting stuff the user does not need.
+ *)
+function av_find_stream_info(ic: PAVFormatContext): cint;
+ cdecl; external av__format;
+
+(**
+ * Read a transport packet from a media file.
+ *
+ * This function is obsolete and should never be used.
+ * Use av_read_frame() instead.
+ *
+ * @param s media file handle
+ * @param pkt is filled
+ * @return 0 if OK, AVERROR_xxx on error
+ *)
+function av_read_packet(s: PAVFormatContext; var pkt: TAVPacket): cint;
+ cdecl; external av__format;
+
+(**
+ * Return the next frame of a stream.
+ *
+ * The returned packet is valid
+ * until the next av_read_frame() or until av_close_input_file() and
+ * must be freed with av_free_packet. For video, the packet contains
+ * exactly one frame. For audio, it contains an cint number of
+ * frames if each frame has a known fixed size (e.g. PCM or ADPCM
+ * data). If the audio frames have a variable size (e.g. MPEG audio),
+ * then it contains one frame.
+ *
+ * pkt->pts, pkt->dts and pkt->duration are always set to correct
+ * values in AVStream.timebase units (and guessed if the format cannot
+ * provide them). pkt->pts can be AV_NOPTS_VALUE if the video format
+ * has B-frames, so it is better to rely on pkt->dts if you do not
+ * decompress the payload.
+ *
+ * @return 0 if OK, < 0 on error or end of file
+ *)
+function av_read_frame(s: PAVFormatContext; var pkt: TAVPacket): cint;
+ cdecl; external av__format;
+
+(**
+ * Seek to the key frame at timestamp.
+ * 'timestamp' in 'stream_index'.
+ * @param stream_index If stream_index is (-1), a default
+ * stream is selected, and timestamp is automatically converted
+ * from AV_TIME_BASE units to the stream specific time_base.
+ * @param timestamp Timestamp in AVStream.time_base units
+ * or, if no stream is specified, in AV_TIME_BASE units.
+ * @param flags flags which select direction and seeking mode
+ * @return >= 0 on success
+ *)
+function av_seek_frame(s: PAVFormatContext; stream_index: cint; timestamp: cint64;
+ flags: cint): cint;
+ cdecl; external av__format;
+
+(**
+ * Start playing a network based stream (e.g. RTSP stream) at the
+ * current position.
+ *)
+function av_read_play(s: PAVFormatContext): cint;
+ cdecl; external av__format;
+
+(**
+ * Pause a network based stream (e.g. RTSP stream).
+ *
+ * Use av_read_play() to resume it.
+ *)
+function av_read_pause(s: PAVFormatContext): cint;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 52003000} // 52.3.0
+(**
+ * Free a AVFormatContext allocated by av_open_input_stream.
+ * @param s context to free
+ *)
+procedure av_close_input_stream(s: PAVFormatContext);
+ cdecl; external av__format;
+{$IFEND}
+
+(**
+ * Close a media file (but not its codecs).
+ *
+ * @param s media file handle
+ *)
+procedure av_close_input_file(s: PAVFormatContext);
+ cdecl; external av__format;
+
+(**
+ * Add a new stream to a media file.
+ *
+ * Can only be called in the read_header() function. If the flag
+ * AVFMTCTX_NOHEADER is in the format context, then new streams
+ * can be added in read_packet too.
+ *
+ * @param s media file handle
+ * @param id file-format-dependent stream ID
+ *)
+function av_new_stream(s: PAVFormatContext; id: cint): PAVStream;
+ cdecl; external av__format;
+{$IF LIBAVFORMAT_VERSION >= 51014000} // 51.14.0
+function av_new_program(s: PAVFormatContext; id: cint): PAVProgram;
+ cdecl; external av__format;
+{$IFEND}
+
+{$IF LIBAVFORMAT_VERSION >= 52014000} // 52.14.0
+(**
+ * Add a new chapter.
+ * This function is NOT part of the public API
+ * and should ONLY be used by demuxers.
+ *
+ * @param s media file handle
+ * @param id unique ID for this chapter
+ * @param start chapter start time in time_base units
+ * @param end chapter end time in time_base units
+ * @param title chapter title
+ *
+ * @return AVChapter or NULL on error
+ *)
+function ff_new_chapter(s: PAVFormatContext; id: cint; time_base: TAVRational;
+ start, end_: cint64; title: {const} Pchar): PAVChapter;
+ cdecl; external av__format;
+{$IFEND}
+
+(**
+ * Set the pts for a given stream.
+ *
+ * @param s stream
+ * @param pts_wrap_bits number of bits effectively used by the pts
+ * (used for wrap control, 33 is the value for MPEG)
+ * @param pts_num numerator to convert to seconds (MPEG: 1)
+ * @param pts_den denominator to convert to seconds (MPEG: 90000)
+ *)
+procedure av_set_pts_info(s: PAVStream; pts_wrap_bits: cint;
+ pts_num: cint; pts_den: cint);
+ cdecl; external av__format;
+
+const
+ AVSEEK_FLAG_BACKWARD = 1; ///< seek backward
+ AVSEEK_FLAG_BYTE = 2; ///< seeking based on position in bytes
+ AVSEEK_FLAG_ANY = 4; ///< seek to any frame, even non-keyframes
+
+function av_find_default_stream_index(s: PAVFormatContext): cint;
+ cdecl; external av__format;
+
+(**
+ * Gets the index for a specific timestamp.
+ * @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond
+ * to the timestamp which is <= the requested one, if backward
+ * is 0, then it will be >=
+ * if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise
+ * @return < 0 if no such timestamp could be found
+ *)
+function av_index_search_timestamp(st: PAVStream; timestamp: cint64; flags: cint): cint;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0
+(**
+ * Ensures the index uses less memory than the maximum specified in
+ * AVFormatContext.max_index_size, by discarding entries if it grows
+ * too large.
+ * This function is not part of the public API and should only be called
+ * by demuxers.
+ *)
+procedure ff_reduce_index(s: PAVFormatContext; stream_index: cint);
+ cdecl; external av__format;
+{$IFEND}
+
+(**
+ * Add an index entry into a sorted list. Update the entry if the list
+ * already contains it.
+ *
+ * @param timestamp timestamp in the timebase of the given stream
+ *)
+function av_add_index_entry(st: PAVStream; pos: cint64; timestamp: cint64;
+ size: cint; distance: cint; flags: cint): cint;
+ cdecl; external av__format;
+
+(**
+ * Does a binary search using av_index_search_timestamp() and
+ * AVCodec.read_timestamp().
+ * This is not supposed to be called directly by a user application,
+ * but by demuxers.
+ * @param target_ts target timestamp in the time base of the given stream
+ * @param stream_index stream number
+ *)
+function av_seek_frame_binary(s: PAVFormatContext; stream_index: cint;
+ target_ts: cint64; flags: cint): cint;
+ cdecl; external av__format;
+
+
+(**
+ * Updates cur_dts of all streams based on the given timestamp and AVStream.
+ *
+ * Stream ref_st unchanged, others set cur_dts in their native time base.
+ * Only needed for timestamp wrapping or if (dts not set and pts!=dts).
+ * @param timestamp new dts expressed in time_base of param ref_st
+ * @param ref_st reference stream giving time_base of param timestamp
+ *)
+procedure av_update_cur_dts(s: PAVFormatContext; ref_st: PAVStream;
+ timestamp: cint64);
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 51007000} // 51.7.0
+type
+ TReadTimestampFunc = function (pavfc: PAVFormatContext;
+ arg2: cint; arg3: Pint64; arg4: cint64): cint64; cdecl;
+
+(**
+ * Does a binary search using read_timestamp().
+ * This is not supposed to be called directly by a user application,
+ * but by demuxers.
+ * @param target_ts target timestamp in the time base of the given stream
+ * @param stream_index stream number
+ *)
+function av_gen_search(s: PAVFormatContext; stream_index: cint;
+ target_ts: cint64; pos_min: cint64;
+ pos_max: cint64; pos_limit: cint64;
+ ts_min: cint64; ts_max: cint64;
+ flags: cint; ts_ret: Pint64;
+ read_timestamp: TReadTimestampFunc): cint64;
+ cdecl; external av__format;
+{$IFEND}
+
+(* media file output *)
+function av_set_parameters(s: PAVFormatContext; ap: PAVFormatParameters): cint;
+ cdecl; external av__format;
+
+(**
+ * Allocate the stream private data and write the stream header to an
+ * output media file.
+ *
+ * @param s media file handle
+ * @return 0 if OK, AVERROR_xxx on error
+ *)
+function av_write_header(s: PAVFormatContext): cint;
+ cdecl; external av__format;
+
+(**
+ * Write a packet to an output media file.
+ *
+ * The packet shall contain one audio or video frame.
+ * The packet must be correctly interleaved according to the container
+ * specification, if not then av_interleaved_write_frame must be used.
+ *
+ * @param s media file handle
+ * @param pkt The packet, which contains the stream_index, buf/buf_size,
+ * dts/pts, ...
+ * @return < 0 on error, = 0 if OK, 1 if end of stream wanted
+ *)
+function av_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint;
+ cdecl; external av__format;
+
+(**
+ * Writes a packet to an output media file ensuring correct interleaving.
+ *
+ * The packet must contain one audio or video frame.
+ * If the packets are already correctly interleaved the application should
+ * call av_write_frame() instead as it is slightly faster. It is also important
+ * to keep in mind that completely non-interleaved input will need huge amounts
+ * of memory to interleave with this, so it is preferable to interleave at the
+ * demuxer level.
+ *
+ * @param s media file handle
+ * @param pkt The packet, which contains the stream_index, buf/buf_size,
+ * dts/pts, ...
+ * @return < 0 on error, = 0 if OK, 1 if end of stream wanted
+ *)
+function av_interleaved_write_frame(s: PAVFormatContext; var pkt: TAVPacket): cint;
+ cdecl; external av__format;
+
+(**
+ * Interleave a packet per dts in an output media file.
+ *
+ * Packets with pkt->destruct == av_destruct_packet will be freed inside this
+ * function, so they cannot be used after it, note calling av_free_packet()
+ * on them is still safe.
+ *
+ * @param s media file handle
+ * @param out the interleaved packet will be output here
+ * @param in the input packet
+ * @param flush 1 if no further packets are available as input and all
+ * remaining packets should be output
+ * @return 1 if a packet was output, 0 if no packet could be output,
+ * < 0 if an error occurred
+ *)
+function av_interleave_packet_per_dts(s: PAVFormatContext; _out: PAVPacket;
+ pkt: PAVPacket; flush: cint): cint;
+ cdecl; external av__format;
+
+(**
+ * @brief Write the stream trailer to an output media file and
+ * free the file private data.
+ *
+ * May only be called after a successful call to av_write_header.
+ *
+ * @param s media file handle
+ * @return 0 if OK, AVERROR_xxx on error
+ *)
+function av_write_trailer(s: pAVFormatContext): cint;
+ cdecl; external av__format;
+
+procedure dump_format(ic: PAVFormatContext; index: cint; url: pchar;
+ is_output: cint);
+ cdecl; external av__format;
+
+(**
+ * Parses width and height out of string str.
+ * @deprecated Use av_parse_video_frame_size instead.
+ *)
+function parse_image_size(width_ptr: PCint; height_ptr: PCint;
+ str: pchar): cint;
+ cdecl; external av__format; deprecated;
+
+(**
+ * Converts frame rate from string to a fraction.
+ * @deprecated Use av_parse_video_frame_rate instead.
+ *)
+function parse_frame_rate(frame_rate: PCint; frame_rate_base: PCint;
+ arg: pchar): cint;
+ cdecl; external av__format; deprecated;
+
+(**
+ * Parses \p datestr and returns a corresponding number of microseconds.
+ * @param datestr String representing a date or a duration.
+ * - If a date the syntax is:
+ * @code
+ * [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]}
+ * @endcode
+ * Time is localtime unless Z is appended, in which case it is
+ * interpreted as UTC.
+ * If the year-month-day part is not specified it takes the current
+ * year-month-day.
+ * Returns the number of microseconds since 1st of January, 1970 up to
+ * the time of the parsed date or INT64_MIN if \p datestr cannot be
+ * successfully parsed.
+ * - If a duration the syntax is:
+ * @code
+ * [-]HH[:MM[:SS[.m...]]]
+ * [-]S+[.m...]
+ * @endcode
+ * Returns the number of microseconds contained in a time interval
+ * with the specified duration or INT64_MIN if \p datestr cannot be
+ * successfully parsed.
+ * @param duration Flag which tells how to interpret \p datestr, if
+ * not zero \p datestr is interpreted as a duration, otherwise as a
+ * date.
+ *)
+function parse_date(datestr: pchar; duration: cint): cint64;
+ cdecl; external av__format;
+
+(** Gets the current time in microseconds. *)
+function av_gettime(): cint64;
+ cdecl; external av__format;
+
+(* ffm-specific for ffserver *)
+const
+ FFM_PACKET_SIZE = 4096;
+
+function ffm_read_write_index(fd: cint): cint64;
+ cdecl; external av__format;
+
+procedure ffm_write_write_index(fd: cint; pos: cint64);
+ cdecl; external av__format;
+
+procedure ffm_set_write_index(s: PAVFormatContext; pos: cint64; file_size: cint64);
+ cdecl; external av__format;
+
+(**
+ * Attempts to find a specific tag in a URL.
+ *
+ * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done.
+ * Return 1 if found.
+ *)
+function find_info_tag(arg: pchar; arg_size: cint; tag1: pchar; info: pchar): cint;
+ cdecl; external av__format;
+
+(**
+ * Returns in 'buf' the path with '%d' replaced by number.
+ *
+ * Also handles the '%0nd' format where 'n' is the total number
+ * of digits and '%%'.
+ *
+ * @param buf destination buffer
+ * @param buf_size destination buffer size
+ * @param path numbered sequence string
+ * @param number frame number
+ * @return 0 if OK, -1 on format error
+ *)
+function av_get_frame_filename(buf: pchar; buf_size: cint;
+ path: pchar; number: cint): cint;
+ cdecl; external av__format
+ {$IF LIBAVFORMAT_VERSION <= 50006000} // 50.6.0
+ name 'get_frame_filename'
+ {$IFEND};
+
+(**
+ * Check whether filename actually is a numbered sequence generator.
+ *
+ * @param filename possible numbered sequence string
+ * @return 1 if a valid numbered sequence string, 0 otherwise
+ *)
+function av_filename_number_test(filename: pchar): cint;
+ cdecl; external av__format
+ {$IF LIBAVFORMAT_VERSION <= 50006000} // 50.6.0
+ name 'filename_number_test'
+ {$IFEND};
+
+{$IF LIBAVFORMAT_VERSION >= 51012002} // 51.12.2
+(**
+ * Generate an SDP for an RTP session.
+ *
+ * @param ac array of AVFormatContexts describing the RTP streams. If the
+ * array is composed by only one context, such context can contain
+ * multiple AVStreams (one AVStream per RTP stream). Otherwise,
+ * all the contexts in the array (an AVCodecContext per RTP stream)
+ * must contain only one AVStream.
+ * @param n_files number of AVCodecContexts contained in ac
+ * @param buff buffer where the SDP will be stored (must be allocated by
+ * the caller)
+ * @param size the size of the buffer
+ * @return 0 if OK, AVERROR_xxx on error
+ *)
+function avf_sdp_create(ac: PPAVFormatContext; n_files: cint; buff: PChar; size: cint): cint;
+ cdecl; external av__format;
+{$IFEND}
+
+implementation
+
+{$IF LIBAVFORMAT_VERSION < 51012002} // 51.12.2
+procedure av_init_packet(var pkt: TAVPacket);
+begin
+ with pkt do begin
+ pts := AV_NOPTS_VALUE;
+ dts := AV_NOPTS_VALUE;
+ pos := -1;
+ duration := 0;
+ flags := 0;
+ stream_index := 0;
+ destruct := @av_destruct_packet_nofree
+ end
+end;
+{$IFEND}
+
+procedure av_free_packet(pkt: PAVPacket);
+begin
+ if ((pkt <> nil) and (@pkt^.destruct <> nil)) then
+ pkt^.destruct(pkt);
+end;
+
+end.
diff --git a/unicode/src/lib/ffmpeg/avio.pas b/unicode/src/lib/ffmpeg/avio.pas
new file mode 100644
index 00000000..5107a9fb
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/avio.pas
@@ -0,0 +1,545 @@
+(*
+ * unbuffered io for ffmpeg system
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversion of libavformat/avio.h
+ * revision 15120, Sun Aug 31 07:39:47 2008 UTC
+ *)
+
+unit avio;
+
+{$IFDEF FPC}
+ {$MODE DELPHI }
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$I switches.inc}
+
+interface
+
+uses
+ ctypes,
+ avutil,
+ avcodec,
+ UConfig;
+
+(* output byte stream handling *)
+
+type
+ TOffset = cint64;
+
+(* unbuffered I/O *)
+
+const
+ URL_RDONLY = 0;
+ URL_WRONLY = 1;
+ URL_RDWR = 2;
+
+ (**
+ * Passing this as the "whence" parameter to a seek function causes it to
+ * return the filesize without seeking anywhere. Supporting this is optional.
+ * If it is not supported then the seek function will return <0.
+ *)
+ AVSEEK_SIZE = $10000;
+
+type
+ TURLInterruptCB = function (): cint; cdecl;
+
+type
+ PURLProtocol = ^TURLProtocol;
+
+ (**
+ * URL Context.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(URLContext) must not be used outside libav*.
+ *)
+ PURLContext = ^TURLContext;
+ TURLContext = record
+ {$IF LIBAVFORMAT_VERSION_MAJOR >= 53}
+ av_class: {const} PAVClass; ///< information for av_log(). Set by url_open().
+ {$IFEND}
+ prot: PURLProtocol;
+ flags: cint;
+ is_streamed: cint; (**< true if streamed (no seek possible), default = false *)
+ max_packet_size: cint; (**< if non zero, the stream is packetized with this max packet size *)
+ priv_data: pointer;
+ filename: PChar; (**< specified filename *)
+ end;
+ PPURLContext = ^PURLContext;
+
+ PURLPollEntry = ^TURLPollEntry;
+ TURLPollEntry = record
+ handle: PURLContext;
+ events: cint;
+ revents: cint;
+ end;
+
+ TURLProtocol = record
+ name: PChar;
+ url_open: function (h: PURLContext; filename: {const} PChar; flags: cint): cint; cdecl;
+ url_read: function (h: PURLContext; buf: PChar; size: cint): cint; cdecl;
+ url_write: function (h: PURLContext; buf: PChar; size: cint): cint; cdecl;
+ url_seek: function (h: PURLContext; pos: TOffset; whence: cint): TOffset; cdecl;
+ url_close: function (h: PURLContext): cint; cdecl;
+ next: PURLProtocol;
+ {$IF (LIBAVFORMAT_VERSION >= 52001000) and (LIBAVFORMAT_VERSION < 52004000)} // 52.1.0 .. 52.4.0
+ url_read_play: function (h: PURLContext): cint;
+ url_read_pause: function (h: PURLContext): cint;
+ {$IFEND}
+ {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0
+ url_read_pause: function (h: PURLContext; pause: cint): cint; cdecl;
+ {$IFEND}
+ {$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0
+ url_read_seek: function (h: PURLContext;
+ stream_index: cint; timestamp: cint64; flags: cint): TOffset; cdecl;
+ {$IFEND}
+ end;
+
+ (**
+ * Bytestream IO Context.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(ByteIOContext) must not be used outside libav*.
+ *)
+ PByteIOContext = ^TByteIOContext;
+ TByteIOContext = record
+ buffer: PChar;
+ buffer_size: cint;
+ buf_ptr: PChar;
+ buf_end: PChar;
+ opaque: pointer;
+ read_packet: function (opaque: pointer; buf: PChar; buf_size: cint): cint; cdecl;
+ write_packet: function (opaque: pointer; buf: PChar; buf_size: cint): cint; cdecl;
+ seek: function (opaque: pointer; offset: TOffset; whence: cint): TOffset; cdecl;
+ pos: TOffset; (* position in the file of the current buffer *)
+ must_flush: cint; (* true if the next seek should flush *)
+ eof_reached: cint; (* true if eof reached *)
+ write_flag: cint; (* true if open for writing *)
+ is_streamed: cint;
+ max_packet_size: cint;
+ checksum: culong;
+ checksum_ptr: PCuchar;
+ update_checksum: function (checksum: culong; buf: {const} PChar; size: cuint): culong; cdecl;
+ error: cint; ///< contains the error code or 0 if no error happened
+ {$IF (LIBAVFORMAT_VERSION >= 52001000) and (LIBAVFORMAT_VERSION < 52004000)} // 52.1.0 .. 52.4.0
+ read_play: function(opaque: Pointer): cint; cdecl;
+ read_pause: function(opaque: Pointer): cint; cdecl;
+ {$IFEND}
+ {$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0
+ read_pause: function(opaque: Pointer; pause: cint): cint; cdecl;
+ {$IFEND}
+ {$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0
+ read_seek: function(opaque: Pointer;
+ stream_index: cint; timestamp: cint64; flags: cint): TOffset; cdecl;
+ {$IFEND}
+ end;
+
+
+{$IF LIBAVFORMAT_VERSION >= 52021000} // 52.21.0
+function url_open_protocol(puc: PPURLContext; up: PURLProtocol;
+ filename: {const} PChar; flags: cint): cint;
+ cdecl; external av__format;
+{$IFEND}
+function url_open(h: PPointer; filename: {const} PChar; flags: cint): cint;
+ cdecl; external av__format;
+function url_read (h: PURLContext; buf: PChar; size: cint): cint;
+ cdecl; external av__format;
+function url_write (h: PURLContext; buf: PChar; size: cint): cint;
+ cdecl; external av__format;
+function url_seek (h: PURLContext; pos: TOffset; whence: cint): TOffset;
+ cdecl; external av__format;
+function url_close (h: PURLContext): cint;
+ cdecl; external av__format;
+function url_exist(filename: {const} PChar): cint;
+ cdecl; external av__format;
+function url_filesize (h: PURLContext): TOffset;
+ cdecl; external av__format;
+
+(**
+ * Return the maximum packet size associated to packetized file
+ * handle. If the file is not packetized (stream like HTTP or file on
+ * disk), then 0 is returned.
+ *
+ * @param h file handle
+ * @return maximum packet size in bytes
+ *)
+function url_get_max_packet_size(h: PURLContext): cint;
+ cdecl; external av__format;
+procedure url_get_filename(h: PURLContext; buf: PChar; buf_size: cint);
+ cdecl; external av__format;
+
+(**
+ * The callback is called in blocking functions to test regulary if
+ * asynchronous interruption is needed. AVERROR(EINTR) is returned
+ * in this case by the interrupted function. 'NULL' means no interrupt
+ * callback is given.
+ *)
+procedure url_set_interrupt_cb (interrupt_cb: TURLInterruptCB);
+ cdecl; external av__format;
+
+(* not implemented *)
+function url_poll(poll_table: PURLPollEntry; n: cint; timeout: cint): cint;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0
+(**
+ * Pause and resume playing - only meaningful if using a network streaming
+ * protocol (e.g. MMS).
+ * @param pause 1 for pause, 0 for resume
+ *)
+function av_url_read_pause(h: PURLContext; pause: cint): cint;
+ cdecl; external av__format;
+{$IFEND}
+
+{$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0
+(**
+ * Seek to a given timestamp relative to some component stream.
+ * Only meaningful if using a network streaming protocol (e.g. MMS.).
+ * @param stream_index The stream index that the timestamp is relative to.
+ * If stream_index is (-1) the timestamp should be in AV_TIME_BASE
+ * units from the beginning of the presentation.
+ * If a stream_index >= 0 is used and the protocol does not support
+ * seeking based on component streams, the call will fail with ENOTSUP.
+ * @param timestamp timestamp in AVStream.time_base units
+ * or if there is no stream specified then in AV_TIME_BASE units.
+ * @param flags Optional combination of AVSEEK_FLAG_BACKWARD, AVSEEK_FLAG_BYTE
+ * and AVSEEK_FLAG_ANY. The protocol may silently ignore
+ * AVSEEK_FLAG_BACKWARD and AVSEEK_FLAG_ANY, but AVSEEK_FLAG_BYTE will
+ * fail with ENOTSUP if used and not supported.
+ * @return >= 0 on success
+ * @see AVInputFormat::read_seek
+ *)
+function av_url_read_seek(h: PURLContext;
+ stream_index: cint; timestamp: cint64; flags: cint): TOffset;
+ cdecl; external av__format;
+{$IFEND}
+
+{
+var
+ first_protocol: PURLProtocol; external av__format;
+ url_interrupt_cb: PURLInterruptCB; external av__format;
+}
+
+{$IF LIBAVFORMAT_VERSION >= 52002000} // 52.2.0
+function av_protocol_next(p: PURLProtocol): PURLProtocol;
+ cdecl; external av__format;
+{$IFEND}
+
+function register_protocol (protocol: PURLProtocol): cint;
+ cdecl; external av__format;
+
+type
+ TReadWriteFunc = function (opaque: Pointer; buf: PChar; buf_size: cint): cint; cdecl;
+ TSeekFunc = function (opaque: Pointer; offset: TOffset; whence: cint): TOffset; cdecl;
+
+function init_put_byte(s: PByteIOContext;
+ buffer: PChar;
+ buffer_size: cint; write_flag: cint;
+ opaque: pointer;
+ read_packet: TReadWriteFunc;
+ write_packet: TReadWriteFunc;
+ seek: TSeekFunc): cint;
+ cdecl; external av__format;
+{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0
+function av_alloc_put_byte(
+ buffer: PChar;
+ buffer_size: cint;
+ write_flag: cint;
+ opaque: Pointer;
+ read_packet: TReadWriteFunc;
+ write_packet: TReadWriteFunc;
+ seek: TSeekFunc): PByteIOContext;
+ cdecl; external av__format;
+{$IFEND}
+
+procedure put_byte(s: PByteIOContext; b: cint);
+ cdecl; external av__format;
+procedure put_buffer (s: PByteIOContext; buf: {const} PChar; size: cint);
+ cdecl; external av__format;
+procedure put_le64(s: PByteIOContext; val: cuint64);
+ cdecl; external av__format;
+procedure put_be64(s: PByteIOContext; val: cuint64);
+ cdecl; external av__format;
+procedure put_le32(s: PByteIOContext; val: cuint);
+ cdecl; external av__format;
+procedure put_be32(s: PByteIOContext; val: cuint);
+ cdecl; external av__format;
+procedure put_le24(s: PByteIOContext; val: cuint);
+ cdecl; external av__format;
+procedure put_be24(s: PByteIOContext; val: cuint);
+ cdecl; external av__format;
+procedure put_le16(s: PByteIOContext; val: cuint);
+ cdecl; external av__format;
+procedure put_be16(s: PByteIOContext; val: cuint);
+ cdecl; external av__format;
+procedure put_tag(s: PByteIOContext; tag: {const} PChar);
+ cdecl; external av__format;
+
+procedure put_strz(s: PByteIOContext; buf: {const} PChar);
+ cdecl; external av__format;
+
+(**
+ * fseek() equivalent for ByteIOContext.
+ * @return new position or AVERROR.
+ *)
+function url_fseek(s: PByteIOContext; offset: TOffset; whence: cint): TOffset;
+ cdecl; external av__format;
+
+(**
+ * Skip given number of bytes forward.
+ * @param offset number of bytes
+ *)
+procedure url_fskip(s: PByteIOContext; offset: TOffset);
+ cdecl; external av__format;
+
+(**
+ * ftell() equivalent for ByteIOContext.
+ * @return position or AVERROR.
+ *)
+function url_ftell(s: PByteIOContext): TOffset;
+ cdecl; external av__format;
+
+(**
+ * Gets the filesize.
+ * @return filesize or AVERROR
+ *)
+function url_fsize(s: PByteIOContext): TOffset;
+ cdecl; external av__format;
+
+(**
+ * feof() equivalent for ByteIOContext.
+ * @return non zero if and only if end of file
+ *)
+function url_feof(s: PByteIOContext): cint;
+ cdecl; external av__format;
+
+function url_ferror(s: PByteIOContext): cint;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 52004000} // 52.4.0
+function av_url_read_fpause(h: PByteIOContext; pause: cint): cint;
+ cdecl; external av__format;
+{$IFEND}
+{$IF LIBAVFORMAT_VERSION >= 52001000} // 52.1.0
+function av_url_read_fseek(h: PByteIOContext;
+ stream_index: cint; timestamp: cint64; flags: cint): TOffset;
+ cdecl; external av__format;
+{$IFEND}
+
+const
+ URL_EOF = -1;
+(** @note return URL_EOF (-1) if EOF *)
+function url_fgetc(s: PByteIOContext): cint;
+ cdecl; external av__format;
+
+(** @warning currently size is limited *)
+function url_fprintf(s: PByteIOContext; fmt: {const} PChar; args: array of const): cint;
+ cdecl; external av__format;
+
+(** @note unlike fgets, the EOL character is not returned and a whole
+ line is parsed. return NULL if first char read was EOF *)
+function url_fgets(s: PByteIOContext; buf: PChar; buf_size: cint): PChar;
+ cdecl; external av__format;
+
+procedure put_flush_packet (s: PByteIOContext);
+ cdecl; external av__format;
+
+
+(**
+ * Reads size bytes from ByteIOContext into buf.
+ * @returns number of bytes read or AVERROR
+ *)
+function get_buffer(s: PByteIOContext; buf: PChar; size: cint): cint;
+ cdecl; external av__format;
+
+(**
+ * Reads size bytes from ByteIOContext into buf.
+ * This reads at most 1 packet. If that is not enough fewer bytes will be
+ * returned.
+ * @returns number of bytes read or AVERROR
+ *)
+function get_partial_buffer(s: PByteIOContext; buf: PChar; size: cint): cint;
+ cdecl; external av__format;
+
+(** @note return 0 if EOF, so you cannot use it if EOF handling is
+ necessary *)
+function get_byte(s: PByteIOContext): cint;
+ cdecl; external av__format;
+function get_le24(s: PByteIOContext): cuint;
+ cdecl; external av__format;
+function get_le32(s: PByteIOContext): cuint;
+ cdecl; external av__format;
+function get_le64(s: PByteIOContext): cuint64;
+ cdecl; external av__format;
+function get_le16(s: PByteIOContext): cuint;
+ cdecl; external av__format;
+
+function get_strz(s: PByteIOContext; buf: PChar; maxlen: cint): PChar;
+ cdecl; external av__format;
+function get_be16(s: PByteIOContext): cuint;
+ cdecl; external av__format;
+function get_be24(s: PByteIOContext): cuint;
+ cdecl; external av__format;
+function get_be32(s: PByteIOContext): cuint;
+ cdecl; external av__format;
+function get_be64(s: PByteIOContext): cuint64;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 51017001} // 51.17.1
+function ff_get_v(bc: PByteIOContext): cuint64;
+ cdecl; external av__format;
+{$IFEND}
+
+function url_is_streamed(s: PByteIOContext): cint; {$IFDEF HasInline}inline;{$ENDIF}
+
+(** @note when opened as read/write, the buffers are only used for
+ writing *)
+{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0
+function url_fdopen (var s: PByteIOContext; h: PURLContext): cint;
+{$ELSE}
+function url_fdopen (s: PByteIOContext; h: PURLContext): cint;
+{$IFEND}
+ cdecl; external av__format;
+
+(** @warning must be called before any I/O *)
+function url_setbufsize (s: PByteIOContext; buf_size: cint): cint;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 51015000} // 51.15.0
+(** Reset the buffer for reading or writing.
+ * @note Will drop any data currently in the buffer without transmitting it.
+ * @param flags URL_RDONLY to set up the buffer for reading, or URL_WRONLY
+ * to set up the buffer for writing. *)
+function url_resetbuf(s: PByteIOContext; flags: cint): cint;
+ cdecl; external av__format;
+{$IFEND}
+
+(** @note when opened as read/write, the buffers are only used for
+ writing *)
+{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0
+function url_fopen(var s: PByteIOContext; filename: {const} PChar; flags: cint): cint;
+{$ELSE}
+function url_fopen(s: PByteIOContext; filename: {const} PChar; flags: cint): cint;
+{$IFEND}
+ cdecl; external av__format;
+function url_fclose(s: PByteIOContext): cint;
+ cdecl; external av__format;
+function url_fileno(s: PByteIOContext): PURLContext;
+ cdecl; external av__format;
+
+(**
+ * Return the maximum packet size associated to packetized buffered file
+ * handle. If the file is not packetized (stream like http or file on
+ * disk), then 0 is returned.
+ *
+ * @param s buffered file handle
+ * @return maximum packet size in bytes
+ *)
+function url_fget_max_packet_size (s: PByteIOContext): cint;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0
+function url_open_buf(var s: PByteIOContext; buf: PChar; buf_size: cint; flags: cint): cint;
+{$ELSE}
+function url_open_buf(s: PByteIOContext; buf: PChar; buf_size: cint; flags: cint): cint;
+{$IFEND}
+ cdecl; external av__format;
+
+(** return the written or read size *)
+function url_close_buf(s: PByteIOContext): cint;
+ cdecl; external av__format;
+
+(**
+ * Open a write only memory stream.
+ *
+ * @param s new IO context
+ * @return zero if no error.
+ *)
+{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0
+function url_open_dyn_buf(var s: PByteIOContext): cint;
+{$ELSE}
+function url_open_dyn_buf(s: PByteIOContext): cint;
+{$IFEND}
+ cdecl; external av__format;
+
+(**
+ * Open a write only packetized memory stream with a maximum packet
+ * size of 'max_packet_size'. The stream is stored in a memory buffer
+ * with a big endian 4 byte header giving the packet size in bytes.
+ *
+ * @param s new IO context
+ * @param max_packet_size maximum packet size (must be > 0)
+ * @return zero if no error.
+ *)
+{$IF LIBAVFORMAT_VERSION >= 52000000} // 52.0.0
+function url_open_dyn_packet_buf(var s: PByteIOContext; max_packet_size: cint): cint;
+{$ELSE}
+function url_open_dyn_packet_buf(s: PByteIOContext; max_packet_size: cint): cint;
+{$IFEND}
+ cdecl; external av__format;
+
+(**
+ * Return the written size and a pointer to the buffer. The buffer
+ * must be freed with av_free().
+ * @param s IO context
+ * @param pbuffer pointer to a byte buffer
+ * @return the length of the byte buffer
+ *)
+function url_close_dyn_buf(s: PByteIOContext; pbuffer:PPointer): cint;
+ cdecl; external av__format;
+
+{$IF LIBAVFORMAT_VERSION >= 51017001} // 51.17.1
+function ff_crc04C11DB7_update(checksum: culong; buf: {const} PChar; len: cuint): culong;
+ cdecl; external av__format;
+{$IFEND}
+function get_checksum(s: PByteIOContext): culong;
+ cdecl; external av__format;
+procedure init_checksum (s: PByteIOContext; update_checksum: pointer; checksum: culong);
+ cdecl; external av__format;
+
+(* udp.c *)
+function udp_set_remote_url(h: PURLContext; uri: {const} PChar): cint;
+ cdecl; external av__format;
+function udp_get_local_port(h: PURLContext): cint;
+ cdecl; external av__format;
+function udp_get_file_handle(h: PURLContext): cint;
+ cdecl; external av__format;
+
+implementation
+
+function url_is_streamed(s: PByteIOContext): cint;
+begin
+ Result := s^.is_streamed;
+end;
+
+end.
diff --git a/unicode/src/lib/ffmpeg/avutil.pas b/unicode/src/lib/ffmpeg/avutil.pas
new file mode 100644
index 00000000..b4fae422
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/avutil.pas
@@ -0,0 +1,320 @@
+(*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversions of
+ *
+ * libavutil/avutil.h:
+ * Min. version: 49.0.1, revision 6577, Sat Oct 7 15:30:46 2006 UTC
+ * Max. version: 49.11.0, revision 15415, Thu Sep 25 19:23:13 2008 UTC
+ *
+ * libavutil/mem.h:
+ * revision 15120, Sun Aug 31 07:39:47 2008 UTC
+ *
+ * libavutil/log.h:
+ * revision 15120, Sun Aug 31 07:39:47 2008 UTC
+ *)
+
+unit avutil;
+
+{$IFDEF FPC}
+ {$MODE DELPHI}
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$IFDEF DARWIN}
+ {$linklib libavutil}
+{$ENDIF}
+
+interface
+
+uses
+ ctypes,
+ mathematics,
+ rational,
+ UConfig;
+
+const
+ (* Max. supported version by this header *)
+ LIBAVUTIL_MAX_VERSION_MAJOR = 49;
+ LIBAVUTIL_MAX_VERSION_MINOR = 11;
+ LIBAVUTIL_MAX_VERSION_RELEASE = 0;
+ LIBAVUTIL_MAX_VERSION = (LIBAVUTIL_MAX_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVUTIL_MAX_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVUTIL_MAX_VERSION_RELEASE * VERSION_RELEASE);
+
+ (* Min. supported version by this header *)
+ LIBAVUTIL_MIN_VERSION_MAJOR = 49;
+ LIBAVUTIL_MIN_VERSION_MINOR = 0;
+ LIBAVUTIL_MIN_VERSION_RELEASE = 1;
+ LIBAVUTIL_MIN_VERSION = (LIBAVUTIL_MIN_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVUTIL_MIN_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVUTIL_MIN_VERSION_RELEASE * VERSION_RELEASE);
+
+(* Check if linked versions are supported *)
+{$IF (LIBAVUTIL_VERSION < LIBAVUTIL_MIN_VERSION)}
+ {$MESSAGE Error 'Linked version of libavutil is too old!'}
+{$IFEND}
+
+{$IF (LIBAVUTIL_VERSION > LIBAVUTIL_MAX_VERSION)}
+ {$MESSAGE Error 'Linked version of libavutil is not yet supported!'}
+{$IFEND}
+
+{$IF LIBAVUTIL_VERSION >= 49008000} // 49.8.0
+(**
+ * Returns the LIBAVUTIL_VERSION_INT constant.
+ *)
+function avutil_version(): cuint;
+ cdecl; external av__format;
+{$IFEND}
+
+type
+(**
+ * Pixel format. Notes:
+ *
+ * PIX_FMT_RGB32 is handled in an endian-specific manner. A RGBA
+ * color is put together as:
+ * (A << 24) | (R << 16) | (G << 8) | B
+ * This is stored as BGRA on little endian CPU architectures and ARGB on
+ * big endian CPUs.
+ *
+ * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
+ * image data is stored in AVFrame.data[0]. The palette is transported in
+ * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
+ * formatted the same as in PIX_FMT_RGB32 described above (i.e., it is
+ * also endian-specific). Note also that the individual RGB palette
+ * components stored in AVFrame.data[1] should be in the range 0..255.
+ * This is important as many custom PAL8 video codecs that were designed
+ * to run on the IBM VGA graphics adapter use 6-bit palette components.
+ *)
+
+ PAVPixelFormat = ^TAVPixelFormat;
+ TAVPixelFormat = (
+ PIX_FMT_NONE= -1,
+ PIX_FMT_YUV420P, ///< Planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
+ PIX_FMT_YUYV422, ///< Packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
+ PIX_FMT_RGB24, ///< Packed RGB 8:8:8, 24bpp, RGBRGB...
+ PIX_FMT_BGR24, ///< Packed RGB 8:8:8, 24bpp, BGRBGR...
+ PIX_FMT_YUV422P, ///< Planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
+ PIX_FMT_YUV444P, ///< Planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
+ PIX_FMT_RGB32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8R 8G 8B(lsb), in cpu endianness
+ PIX_FMT_YUV410P, ///< Planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
+ PIX_FMT_YUV411P, ///< Planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
+ PIX_FMT_RGB565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), in cpu endianness
+ PIX_FMT_RGB555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), in cpu endianness most significant bit to 1
+ PIX_FMT_GRAY8, ///< Y , 8bpp
+ PIX_FMT_MONOWHITE, ///< Y , 1bpp, 0 is white, 1 is black
+ PIX_FMT_MONOBLACK, ///< Y , 1bpp, 0 is black, 1 is white
+ PIX_FMT_PAL8, ///< 8 bit with PIX_FMT_RGB32 palette
+ PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0, 12bpp, full scale (jpeg)
+ PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2, 16bpp, full scale (jpeg)
+ PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4, 24bpp, full scale (jpeg)
+ PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
+ PIX_FMT_XVMC_MPEG2_IDCT,
+ PIX_FMT_UYVY422, ///< Packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
+ PIX_FMT_UYYVYY411, ///< Packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
+ PIX_FMT_BGR32, ///< Packed RGB 8:8:8, 32bpp, (msb)8A 8B 8G 8R(lsb), in cpu endianness
+ PIX_FMT_BGR565, ///< Packed RGB 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), in cpu endianness
+ PIX_FMT_BGR555, ///< Packed RGB 5:5:5, 16bpp, (msb)1A 5B 5G 5R(lsb), in cpu endianness most significant bit to 1
+ PIX_FMT_BGR8, ///< Packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
+ PIX_FMT_BGR4, ///< Packed RGB 1:2:1, 4bpp, (msb)1B 2G 1R(lsb)
+ PIX_FMT_BGR4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
+ PIX_FMT_RGB8, ///< Packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
+ PIX_FMT_RGB4, ///< Packed RGB 1:2:1, 4bpp, (msb)1R 2G 1B(lsb)
+ PIX_FMT_RGB4_BYTE, ///< Packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
+ PIX_FMT_NV12, ///< Planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 for UV
+ PIX_FMT_NV21, ///< as above, but U and V bytes are swapped
+
+ PIX_FMT_RGB32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8R 8G 8B 8A(lsb), in cpu endianness
+ PIX_FMT_BGR32_1, ///< Packed RGB 8:8:8, 32bpp, (msb)8B 8G 8R 8A(lsb), in cpu endianness
+
+ PIX_FMT_GRAY16BE, ///< Y , 16bpp, big-endian
+ PIX_FMT_GRAY16LE, ///< Y , 16bpp, little-endian
+ PIX_FMT_YUV440P, ///< Planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
+ PIX_FMT_YUVJ440P, ///< Planar YUV 4:4:0 full scale (jpeg)
+ PIX_FMT_YUVA420P, ///< Planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
+ PIX_FMT_NB ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
+ );
+
+const
+{$ifdef WORDS_BIGENDIAN}
+ PIX_FMT_RGBA = PIX_FMT_RGB32_1;
+ PIX_FMT_BGRA = PIX_FMT_BGR32_1;
+ PIX_FMT_ARGB = PIX_FMT_RGB32;
+ PIX_FMT_ABGR = PIX_FMT_BGR32;
+ PIX_FMT_GRAY16 = PIX_FMT_GRAY16BE;
+{$else}
+ PIX_FMT_RGBA = PIX_FMT_BGR32;
+ PIX_FMT_BGRA = PIX_FMT_RGB32;
+ PIX_FMT_ARGB = PIX_FMT_BGR32_1;
+ PIX_FMT_ABGR = PIX_FMT_RGB32_1;
+ PIX_FMT_GRAY16 = PIX_FMT_GRAY16LE;
+{$endif}
+
+{$IF LIBAVUTIL_VERSION_MAJOR < 50} // 50.0.0
+ PIX_FMT_UYVY411 = PIX_FMT_UYYVYY411;
+ PIX_FMT_RGBA32 = PIX_FMT_RGB32;
+ PIX_FMT_YUV422 = PIX_FMT_YUYV422;
+{$IFEND}
+
+(* common.h *)
+
+function MKTAG(a,b,c,d: char): integer;
+
+(* mem.h *)
+
+(**
+ * Allocate a block of \p size bytes with alignment suitable for all
+ * memory accesses (including vectors if available on the CPU).
+ * @param size Size in bytes for the memory block to be allocated.
+ * @return Pointer to the allocated block, NULL if it cannot allocate
+ * it.
+ * @see av_mallocz()
+ *)
+function av_malloc(size: cuint): pointer;
+ cdecl; external av__util; {av_malloc_attrib av_alloc_size(1)}
+
+(**
+ * Allocate or reallocate a block of memory.
+ * If \p ptr is NULL and \p size > 0, allocate a new block. If \p
+ * size is zero, free the memory block pointed by \p ptr.
+ * @param size Size in bytes for the memory block to be allocated or
+ * reallocated.
+ * @param ptr Pointer to a memory block already allocated with
+ * av_malloc(z)() or av_realloc() or NULL.
+ * @return Pointer to a newly reallocated block or NULL if it cannot
+ * reallocate or the function is used to free the memory block.
+ * @see av_fast_realloc()
+ *)
+function av_realloc(ptr: pointer; size: cuint): pointer;
+ cdecl; external av__util; {av_alloc_size(2)}
+
+(**
+ * Free a memory block which has been allocated with av_malloc(z)() or
+ * av_realloc().
+ * @param ptr Pointer to the memory block which should be freed.
+ * @note ptr = NULL is explicitly allowed.
+ * @note It is recommended that you use av_freep() instead.
+ * @see av_freep()
+ *)
+procedure av_free(ptr: pointer);
+ cdecl; external av__util;
+
+(**
+ * Allocate a block of \p size bytes with alignment suitable for all
+ * memory accesses (including vectors if available on the CPU) and
+ * set to zeroes all the bytes of the block.
+ * @param size Size in bytes for the memory block to be allocated.
+ * @return Pointer to the allocated block, NULL if it cannot allocate
+ * it.
+ * @see av_malloc()
+ *)
+function av_mallocz(size: cuint): pointer;
+ cdecl; external av__util; {av_malloc_attrib av_alloc_size(1)}
+
+(**
+ * Duplicate the string \p s.
+ * @param s String to be duplicated.
+ * @return Pointer to a newly allocated string containing a
+ * copy of \p s or NULL if it cannot be allocated.
+ *)
+function av_strdup({const} s: PChar): PChar;
+ cdecl; external av__util; {av_malloc_attrib}
+
+(**
+ * Free a memory block which has been allocated with av_malloc(z)() or
+ * av_realloc() and set to NULL the pointer to it.
+ * @param ptr Pointer to the pointer to the memory block which should
+ * be freed.
+ * @see av_free()
+ *)
+procedure av_freep (ptr: pointer);
+ cdecl; external av__util;
+
+(* log.h *)
+
+const
+{$IF LIBAVUTIL_VERSION_MAJOR < 50}
+ AV_LOG_QUIET = -1;
+ AV_LOG_FATAL = 0;
+ AV_LOG_ERROR = 0;
+ AV_LOG_WARNING = 1;
+ AV_LOG_INFO = 1;
+ AV_LOG_VERBOSE = 1;
+ AV_LOG_DEBUG = 2;
+{$ELSE}
+ AV_LOG_QUIET = -8;
+
+(**
+ * something went really wrong and we will crash now
+ *)
+ AV_LOG_PANIC = 0;
+
+(**
+ * something went wrong and recovery is not possible
+ * like no header in a format which depends on it or a combination
+ * of parameters which are not allowed
+ *)
+ AV_LOG_FATAL = 8;
+
+(**
+ * something went wrong and cannot losslessly be recovered
+ * but not all future data is affected
+ *)
+ AV_LOG_ERROR = 16;
+
+(**
+ * something somehow does not look correct / something which may or may not
+ * lead to some problems like use of -vstrict -2
+ *)
+ AV_LOG_WARNING = 24;
+
+ AV_LOG_INFO = 32;
+ AV_LOG_VERBOSE = 40;
+
+(**
+ * stuff which is only useful for libav* developers
+ *)
+ AV_LOG_DEBUG = 48;
+{$IFEND}
+
+function av_log_get_level(): cint;
+ cdecl; external av__util;
+procedure av_log_set_level(level: cint);
+ cdecl; external av__util;
+
+
+implementation
+
+function MKTAG(a,b,c,d: char): integer;
+begin
+ Result := (ord(a) or (ord(b) shl 8) or (ord(c) shl 16) or (ord(d) shl 24));
+end;
+
+end.
diff --git a/unicode/src/lib/ffmpeg/mathematics.pas b/unicode/src/lib/ffmpeg/mathematics.pas
new file mode 100644
index 00000000..606d9189
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/mathematics.pas
@@ -0,0 +1,88 @@
+(*
+ * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversion of libavutil/mathematics.h
+ * revision 15120, Sun Aug 31 07:39:47 2008 UTC
+ *)
+
+unit mathematics;
+
+{$IFDEF FPC}
+ {$MODE DELPHI }
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+interface
+
+uses
+ ctypes,
+ rational,
+ UConfig;
+
+const
+ M_E = 2.7182818284590452354; // e
+ M_LN2 = 0.69314718055994530942; // log_e 2
+ M_LN10 = 2.30258509299404568402; // log_e 10
+ M_PI = 3.14159265358979323846; // pi
+ M_SQRT1_2 = 0.70710678118654752440; // 1/sqrt(2)
+
+type
+ TAVRounding = (
+ AV_ROUND_ZERO = 0, ///< round toward zero
+ AV_ROUND_INF = 1, ///< round away from zero
+ AV_ROUND_DOWN = 2, ///< round toward -infinity
+ AV_ROUND_UP = 3, ///< round toward +infinity
+ AV_ROUND_NEAR_INF = 5 ///< round to nearest and halfway cases away from zero
+ );
+
+(**
+ * rescale a 64bit integer with rounding to nearest.
+ * a simple a*b/c isn't possible as it can overflow
+ *)
+function av_rescale (a, b, c: cint64): cint64;
+ cdecl; external av__util; {av_const}
+
+(**
+ * rescale a 64bit integer with specified rounding.
+ * a simple a*b/c isn't possible as it can overflow
+ *)
+function av_rescale_rnd (a, b, c: cint64; enum: TAVRounding): cint64;
+ cdecl; external av__util; {av_const}
+
+(**
+ * rescale a 64bit integer by 2 rational numbers.
+ *)
+function av_rescale_q (a: cint64; bq, cq: TAVRational): cint64;
+ cdecl; external av__util; {av_const}
+
+implementation
+
+end.
+
diff --git a/unicode/src/lib/ffmpeg/opt.pas b/unicode/src/lib/ffmpeg/opt.pas
new file mode 100644
index 00000000..e734aa9f
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/opt.pas
@@ -0,0 +1,198 @@
+(*
+ * AVOptions
+ * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversion of libavcodec/opt.h
+ * revision 15120, Sun Aug 31 07:39:47 2008 UTC
+ *)
+
+unit opt;
+
+{$IFDEF FPC}
+ {$MODE DELPHI}
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+interface
+
+uses
+ ctypes,
+ rational,
+ UConfig;
+
+type
+ TAVOptionType = (
+ FF_OPT_TYPE_FLAGS,
+ FF_OPT_TYPE_INT,
+ FF_OPT_TYPE_INT64,
+ FF_OPT_TYPE_DOUBLE,
+ FF_OPT_TYPE_FLOAT,
+ FF_OPT_TYPE_STRING,
+ FF_OPT_TYPE_RATIONAL,
+ FF_OPT_TYPE_BINARY, ///< offset must point to a pointer immediately followed by an int for the length
+ FF_OPT_TYPE_CONST = 128
+ );
+
+const
+ AV_OPT_FLAG_ENCODING_PARAM = 1; ///< a generic parameter which can be set by the user for muxing or encoding
+ AV_OPT_FLAG_DECODING_PARAM = 2; ///< a generic parameter which can be set by the user for demuxing or decoding
+ AV_OPT_FLAG_METADATA = 4; ///< some data extracted or inserted into the file like title, comment, ...
+ AV_OPT_FLAG_AUDIO_PARAM = 8;
+ AV_OPT_FLAG_VIDEO_PARAM = 16;
+ AV_OPT_FLAG_SUBTITLE_PARAM = 32;
+
+type
+ (**
+ * AVOption
+ *)
+ PAVOption = ^TAVOption;
+ TAVOption = record
+ name: {const} PChar;
+
+ (**
+ * short English help text
+ * @todo What about other languages?
+ *)
+ help: {const} PChar;
+
+ (**
+ * The offset relative to the context structure where the option
+ * value is stored. It should be 0 for named constants.
+ *)
+ offset: cint;
+ type_: TAVOptionType;
+
+ (**
+ * the default value for scalar options
+ *)
+ default_val: cdouble;
+ min: cdouble; ///< minimum valid value for the option
+ max: cdouble; ///< maximum valid value for the option
+
+ flags: cint;
+//FIXME think about enc-audio, ... style flags
+
+ (**
+ * The logical unit to which the option belongs. Non-constant
+ * options and corresponding named constants share the same
+ * unit. May be NULL.
+ *)
+ unit_: {const} PChar;
+ end;
+
+{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
+(**
+ * Looks for an option in \p obj. Looks only for the options which
+ * have the flags set as specified in \p mask and \p flags (that is,
+ * for which it is the case that opt->flags & mask == flags).
+ *
+ * @param[in] obj a pointer to a struct whose first element is a
+ * pointer to an #AVClass
+ * @param[in] name the name of the option to look for
+ * @param[in] unit the unit of the option to look for, or any if NULL
+ * @return a pointer to the option found, or NULL if no option
+ * has been found
+ *)
+function av_find_opt(obj: Pointer; {const} name: {const} PChar; {const} unit_: PChar; mask: cint; flags: cint): {const} PAVOption;
+ cdecl; external av__codec;
+{$IFEND}
+
+(**
+ * @see av_set_string2()
+ *)
+function av_set_string(obj: pointer; name: {const} pchar; val: {const} pchar): {const} PAVOption;
+ cdecl; external av__codec; deprecated;
+
+{$IF LIBAVCODEC_VERSION >= 51059000} // 51.59.0
+(**
+ * Sets the field of obj with the given name to value.
+ *
+ * @param[in] obj A struct whose first element is a pointer to an
+ * AVClass.
+ * @param[in] name the name of the field to set
+ * @param[in] val The value to set. If the field is not of a string
+ * type, then the given string is parsed.
+ * SI postfixes and some named scalars are supported.
+ * If the field is of a numeric type, it has to be a numeric or named
+ * scalar. Behavior with more than one scalar and +- infix operators
+ * is undefined.
+ * If the field is of a flags type, it has to be a sequence of numeric
+ * scalars or named flags separated by '+' or '-'. Prefixing a flag
+ * with '+' causes it to be set without affecting the other flags;
+ * similarly, '-' unsets a flag.
+ * @return a pointer to the AVOption corresponding to the field set or
+ * NULL if no matching AVOption exists, or if the value \p val is not
+ * valid
+ * @param alloc when 1 then the old value will be av_freed() and the
+ * new av_strduped()
+ * when 0 then no av_free() nor av_strdup() will be used
+ *)
+function av_set_string2(obj: Pointer; name: {const} PChar; val: {const} PChar; alloc: cint): {const} PAVOption;
+ cdecl; external av__codec;
+{$IFEND}
+
+function av_set_double(obj: pointer; name: {const} pchar; n: cdouble): PAVOption;
+ cdecl; external av__codec;
+
+function av_set_q(obj: pointer; name: {const} pchar; n: TAVRational): PAVOption;
+ cdecl; external av__codec;
+
+function av_set_int(obj: pointer; name: {const} pchar; n: cint64): PAVOption;
+ cdecl; external av__codec;
+
+function av_get_double(obj: pointer; name: {const} pchar; var o_out: PAVOption): cdouble;
+ cdecl; external av__codec;
+
+function av_get_q(obj: pointer; name: {const} pchar; var o_out: PAVOption): TAVRational;
+ cdecl; external av__codec;
+
+function av_get_int(obj: pointer; name: {const} pchar; var o_out: {const} PAVOption): cint64;
+ cdecl; external av__codec;
+
+function av_get_string(obj: pointer; name: {const} pchar; var o_out: {const} PAVOption; buf: pchar; buf_len: cint): pchar;
+ cdecl; external av__codec;
+
+function av_next_option(obj: pointer; last: {const} PAVOption): PAVOption;
+ cdecl; external av__codec;
+
+function av_opt_show(obj: pointer; av_log_obj: pointer): cint;
+ cdecl; external av__codec;
+
+procedure av_opt_set_defaults(s: pointer);
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
+procedure av_opt_set_defaults2(s: Pointer; mask: cint; flags: cint);
+ cdecl; external av__codec;
+{$IFEND}
+
+implementation
+
+end.
diff --git a/unicode/src/lib/ffmpeg/rational.pas b/unicode/src/lib/ffmpeg/rational.pas
new file mode 100644
index 00000000..02d594ff
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/rational.pas
@@ -0,0 +1,175 @@
+(*
+ * Rational numbers
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversion of libavutil/rational.h
+ * revision 15415, Thu Sep 25 19:23:13 2008 UTC
+ *)
+
+unit rational;
+
+{$IFDEF FPC}
+ {$MODE DELPHI}
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$I switches.inc}
+
+interface
+
+uses
+ ctypes,
+ UConfig;
+
+type
+(*
+ * Rational number num/den.
+ *)
+ PAVRational = ^TAVRational;
+ TAVRational = record
+ num: cint; ///< numerator
+ den: cint; ///< denominator
+ end;
+
+ TAVRationalArray = array[0 .. (MaxInt div SizeOf(TAVRational))-1] of TAVRational;
+ PAVRationalArray = ^TAVRationalArray;
+
+(**
+ * Compare two rationals.
+ * @param a first rational
+ * @param b second rational
+ * @return 0 if a==b, 1 if a>b and -1 if a<b.
+ *)
+function av_cmp_q(a: TAVRational; b: TAVRational): cint; {$IFDEF HasInline}inline;{$ENDIF}
+
+(**
+ * Rational to double conversion.
+ * @param a rational to convert
+ * @return (double) a
+ *)
+function av_q2d(a: TAVRational): cdouble; {$IFDEF HasInline}inline;{$ENDIF}
+
+(**
+ * Reduce a fraction.
+ * This is useful for framerate calculations.
+ * @param dst_nom destination numerator
+ * @param dst_den destination denominator
+ * @param nom source numerator
+ * @param den source denominator
+ * @param max the maximum allowed for dst_nom & dst_den
+ * @return 1 if exact, 0 otherwise
+ *)
+function av_reduce(dst_nom: PCint; dst_den: PCint; nom: cint64; den: cint64; max: cint64): cint;
+ cdecl; external av__util;
+
+(**
+ * Multiplies two rationals.
+ * @param b first rational.
+ * @param c second rational.
+ * @return b*c.
+ *)
+function av_mul_q(b: TAVRational; c: TAVRational): TAVRational;
+ cdecl; external av__util; {av_const}
+
+(**
+ * Divides one rational by another.
+ * @param b first rational.
+ * @param c second rational.
+ * @return b/c.
+ *)
+function av_div_q(b: TAVRational; c: TAVRational): TAVRational;
+ cdecl; external av__util; {av_const}
+
+(**
+ * Adds two rationals.
+ * @param b first rational.
+ * @param c second rational.
+ * @return b+c.
+ *)
+function av_add_q(b: TAVRational; c: TAVRational): TAVRational;
+ cdecl; external av__util; {av_const}
+
+(**
+ * Subtracts one rational from another.
+ * @param b first rational.
+ * @param c second rational.
+ * @return b-c.
+ *)
+function av_sub_q(b: TAVRational; c: TAVRational): TAVRational;
+ cdecl; external av__util; {av_const}
+
+(**
+ * Converts a double precision floating point number to a rational.
+ * @param d double to convert
+ * @param max the maximum allowed numerator and denominator
+ * @return (AVRational) d.
+ *)
+function av_d2q(d: cdouble; max: cint): TAVRational;
+ cdecl; external av__util; {av_const}
+
+{$IF LIBAVUTIL_VERSION >= 49011000} // 49.11.0
+
+(**
+ * @return 1 if \q1 is nearer to \p q than \p q2, -1 if \p q2 is nearer
+ * than \p q1, 0 if they have the same distance.
+ *)
+function av_nearer_q(q, q1, q2: TAVRational): cint;
+ cdecl; external av__util;
+
+(**
+ * Finds the nearest value in \p q_list to \p q.
+ * @param q_list an array of rationals terminated by {0, 0}
+ * @return the index of the nearest value found in the array
+ *)
+function av_find_nearest_q_idx(q: TAVRational; q_list: {const} PAVRationalArray): cint;
+ cdecl; external av__util;
+
+{$IFEND}
+
+implementation
+
+function av_cmp_q (a: TAVRational; b: TAVRational): cint;
+var
+ tmp: cint64;
+begin
+ tmp := a.num * cint64(b.den) - b.num * cint64(a.den);
+
+ if (tmp <> 0) then
+ Result := (tmp shr 63) or 1
+ else
+ Result := 0
+end;
+
+function av_q2d(a: TAVRational): cdouble;
+begin
+ Result := a.num / a.den;
+end;
+
+end.
diff --git a/unicode/src/lib/ffmpeg/src/MacOSX/MacOSXReadMe.txt b/unicode/src/lib/ffmpeg/src/MacOSX/MacOSXReadMe.txt
new file mode 100644
index 00000000..c2f5826a
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/src/MacOSX/MacOSXReadMe.txt
@@ -0,0 +1,24 @@
+If you are using fink to install ffmpeg and friends,
+you can skip the rest of this notes.
+
+How to download an build ffmpeg for UltraStar Deluxe on Mac OS X:
+
+1. Open a terminal.
+
+2. cd into the Game/Code/lib/ffmpeg/src/MacOSX directory
+
+3. Run the following command:
+
+svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
+
+4. The compile ffmpeg. I made a script for this:
+
+./build_ffmpeg.sh
+
+5. On OS X you have to patch the the dylibs. Run the following
+ script. It patches the dylibs and copies them to the
+ lib/ffmpeg dir:
+
+./copy_and_patch_dylibs.sh
+
+You're done.
diff --git a/unicode/src/lib/ffmpeg/src/MacOSX/build_ffmpeg.sh b/unicode/src/lib/ffmpeg/src/MacOSX/build_ffmpeg.sh
new file mode 100755
index 00000000..bcb3ca1e
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/src/MacOSX/build_ffmpeg.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+cd ffmpeg
+./configure --enable-shared --disable-static --disable-mmx
+make
+
diff --git a/unicode/src/lib/ffmpeg/src/MacOSX/copy_and_patch_dylibs.sh b/unicode/src/lib/ffmpeg/src/MacOSX/copy_and_patch_dylibs.sh
new file mode 100755
index 00000000..064d2ecc
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/src/MacOSX/copy_and_patch_dylibs.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Copy dylibs:
+cp ffmpeg/libavcodec/libavcodec.51.dylib ../../libavcodec.dylib
+cp ffmpeg/libavformat/libavformat.52.dylib ../../libavformat.dylib
+cp ffmpeg/libavutil/libavutil.49.dylib ../../libavutil.dylib
+
+# Patching libavcodec:
+install_name_tool -id @executable_path/libavcodec.dylib ../../libavcodec.dylib
+install_name_tool -change /usr/local/lib/libavutil.dylib @executable_path/libavutil.dylib ../../libavcodec.dylib
+
+# Patching libavformat:
+install_name_tool -id @executable_path/libavformat.dylib ../../libavformat.dylib
+install_name_tool -change /usr/local/lib/libavutil.dylib @executable_path/libavutil.dylib ../../libavformat.dylib
+install_name_tool -change /usr/local/lib/libavcodec.dylib @executable_path/libavcodec.dylib ../../libavformat.dylib
+
+# Patching libavcodec:
+install_name_tool -id @executable_path/libavutil.dylib ../../libavutil.dylib
+
+# Printing result:
+otool -L ../../libavutil.dylib
+otool -L ../../libavcodec.dylib
+otool -L ../../libavformat.dylib \ No newline at end of file
diff --git a/unicode/src/lib/ffmpeg/swscale.pas b/unicode/src/lib/ffmpeg/swscale.pas
new file mode 100644
index 00000000..965659d9
--- /dev/null
+++ b/unicode/src/lib/ffmpeg/swscale.pas
@@ -0,0 +1,212 @@
+(*
+ * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(*
+ * FFmpeg Pascal port
+ * - Ported by the UltraStar Deluxe Team
+ *)
+
+(*
+ * Conversion of libswscale/swscale.h
+ * revision 27592, Fri Sep 12 21:46:53 2008 UTC
+ *)
+
+unit swscale;
+
+{$IFDEF FPC}
+ {$MODE DELPHI }
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$IFDEF DARWIN}
+ {$linklib libswscale}
+{$ENDIF}
+
+interface
+
+uses
+ ctypes,
+ avutil,
+ UConfig;
+
+const
+ (* Max. supported version by this header *)
+ LIBSWSCALE_MAX_VERSION_MAJOR = 0;
+ LIBSWSCALE_MAX_VERSION_MINOR = 6;
+ LIBSWSCALE_MAX_VERSION_RELEASE = 1;
+ LIBSWSCALE_MAX_VERSION = (LIBSWSCALE_MAX_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBSWSCALE_MAX_VERSION_MINOR * VERSION_MINOR) +
+ (LIBSWSCALE_MAX_VERSION_RELEASE * VERSION_RELEASE);
+
+(* Check if linked versions are supported *)
+{$IF (LIBSWSCALE_VERSION > LIBSWSCALE_MAX_VERSION)}
+ {$MESSAGE Error 'Linked version of libswscale is not yet supported!'}
+{$IFEND}
+
+type
+ TQuadCintArray = array[0..3] of cint;
+ PQuadCintArray = ^TQuadCintArray;
+ TCintArray = array[0..0] of cint;
+ PCintArray = ^TCintArray;
+ TPCuint8Array = array[0..0] of PCuint8;
+ PPCuint8Array = ^TPCuint8Array;
+
+{$IF LIBSWSCALE_VERSION >= 000006001} // 0.6.1
+(**
+ * Returns the LIBSWSCALE_VERSION_INT constant.
+ *)
+function swscale_version(): cuint;
+ cdecl; external sw__scale;
+{$IFEND}
+
+const
+ {* values for the flags, the stuff on the command line is different *}
+ SWS_FAST_BILINEAR = 1;
+ SWS_BILINEAR = 2;
+ SWS_BICUBIC = 4;
+ SWS_X = 8;
+ SWS_POINT = $10;
+ SWS_AREA = $20;
+ SWS_BICUBLIN = $40;
+ SWS_GAUSS = $80;
+ SWS_SINC = $100;
+ SWS_LANCZOS = $200;
+ SWS_SPLINE = $400;
+
+ SWS_SRC_V_CHR_DROP_MASK = $30000;
+ SWS_SRC_V_CHR_DROP_SHIFT = 16;
+
+ SWS_PARAM_DEFAULT = 123456;
+
+ SWS_PRINT_INFO = $1000;
+
+ //the following 3 flags are not completely implemented
+ //internal chrominace subsampling info
+ SWS_FULL_CHR_H_INT = $2000;
+ //input subsampling info
+ SWS_FULL_CHR_H_INP = $4000;
+ SWS_DIRECT_BGR = $8000;
+ SWS_ACCURATE_RND = $40000;
+ SWS_BITEXACT = $80000;
+
+ SWS_CPU_CAPS_MMX = $80000000;
+ SWS_CPU_CAPS_MMX2 = $20000000;
+ SWS_CPU_CAPS_3DNOW = $40000000;
+ SWS_CPU_CAPS_ALTIVEC = $10000000;
+ SWS_CPU_CAPS_BFIN = $01000000;
+
+ SWS_MAX_REDUCE_CUTOFF = 0.002;
+
+ SWS_CS_ITU709 = 1;
+ SWS_CS_FCC = 4;
+ SWS_CS_ITU601 = 5;
+ SWS_CS_ITU624 = 5;
+ SWS_CS_SMPTE170M = 5;
+ SWS_CS_SMPTE240M = 7;
+ SWS_CS_DEFAULT = 5;
+
+
+type
+
+ // when used for filters they must have an odd number of elements
+ // coeffs cannot be shared between vectors
+ PSwsVector = ^TSwsVector;
+ TSwsVector = record
+ coeff: PCdouble;
+ length: cint;
+ end;
+
+ // vectors can be shared
+ PSwsFilter = ^TSwsFilter;
+ TSwsFilter = record
+ lumH: PSwsVector;
+ lumV: PSwsVector;
+ chrH: PSwsVector;
+ chrV: PSwsVector;
+ end;
+
+ PSwsContext = ^TSwsContext;
+ TSwsContext = record
+ {internal structure}
+ end;
+
+
+procedure sws_freeContext(swsContext: PSwsContext);
+ cdecl; external sw__scale;
+
+function sws_getContext(srcW: cint; srcH: cint; srcFormat: TAVPixelFormat;
+ dstW: cint; dstH: cint; dstFormat: TAVPixelFormat; flags: cint;
+ srcFilter: PSwsFilter; dstFilter: PSwsFilter; param: PCdouble): PSwsContext;
+ cdecl; external sw__scale;
+function sws_scale(context: PSwsContext; src: PPCuint8Array; srcStride: PCintArray; srcSliceY: cint; srcSliceH: cint;
+ dst: PPCuint8Array; dstStride: PCintArray): cint;
+ cdecl; external sw__scale;
+function sws_scale_ordered(context: PSwsContext; src: PPCuint8Array; srcStride: PCintArray; srcSliceY: cint;
+ srcSliceH: cint; dst: PPCuint8Array; dstStride: PCintArray): cint;
+ cdecl; external sw__scale; deprecated;
+
+function sws_setColorspaceDetails(c: PSwsContext; inv_table: PQuadCintArray; srcRange: cint; table: PQuadCintArray; dstRange: cint;
+ brightness: cint; contrast: cint; saturation: cint): cint;
+ cdecl; external sw__scale;
+function sws_getColorspaceDetails(c: PSwsContext; var inv_table: PQuadCintArray; var srcRange: cint; var table: PQuadCintArray; var dstRange: cint;
+ var brightness: cint; var contrast: cint; var saturation: cint): cint;
+ cdecl; external sw__scale;
+function sws_getGaussianVec(variance: cdouble; quality: cdouble): PSwsVector;
+ cdecl; external sw__scale;
+function sws_getConstVec(c: cdouble; length: cint): PSwsVector;
+ cdecl; external sw__scale;
+function sws_getIdentityVec: PSwsVector;
+ cdecl; external sw__scale;
+procedure sws_scaleVec(a: PSwsVector; scalar: cdouble);
+ cdecl; external sw__scale;
+procedure sws_normalizeVec(a: PSwsVector; height: cdouble);
+ cdecl; external sw__scale;
+procedure sws_convVec(a: PSwsVector; b: PSwsVector);
+ cdecl; external sw__scale;
+procedure sws_addVec(a: PSwsVector; b: PSwsVector);
+ cdecl; external sw__scale;
+procedure sws_subVec(a: PSwsVector; b: PSwsVector);
+ cdecl; external sw__scale;
+procedure sws_shiftVec(a: PSwsVector; shift: cint);
+ cdecl; external sw__scale;
+function sws_cloneVec(a: PSwsVector): PSwsVector;
+ cdecl; external sw__scale;
+
+procedure sws_printVec(a: PSwsVector);
+ cdecl; external sw__scale;
+procedure sws_freeVec(a: PSwsVector);
+ cdecl; external sw__scale;
+
+function sws_getDefaultFilter(lumaGBlur: cfloat; chromaGBlur: cfloat; lumaSarpen: cfloat; chromaSharpen: cfloat; chromaHShift: cfloat;
+ chromaVShift: cfloat; verbose: cint): PSwsFilter;
+ cdecl; external sw__scale;
+procedure sws_freeFilter(filter: PSwsFilter);
+ cdecl; external sw__scale;
+
+function sws_getCachedContext(context: PSwsContext;
+ srcW: cint; srcH: cint; srcFormat: cint;
+ dstW: cint; dstH: cint; dstFormat: cint; flags: cint;
+ srcFilter: PSwsFilter; dstFilter: PSwsFilter; param: PCdouble): PSwsContext;
+ cdecl; external sw__scale;
+
+implementation
+
+end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 17:32:46 +0000