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authortobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-02-05 13:43:38 +0000
committertobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-02-05 13:43:38 +0000
commit89ac41a2ccb85d6dfccb501ff4877231cab72094 (patch)
treefc8de71787a2739768fdc60b736d0186bbc3b12d /Game/Code/lib/ffmpeg/avcodec.pas
parenteafa73ec3181ed45a8a6fdea8ef64fc9a1e867b3 (diff)
downloadusdx-89ac41a2ccb85d6dfccb501ff4877231cab72094.tar.gz
usdx-89ac41a2ccb85d6dfccb501ff4877231cab72094.tar.xz
usdx-89ac41a2ccb85d6dfccb501ff4877231cab72094.zip
Update of the ffmpeg headers to their current trunk versions.
IMPORTANT: parameter of av_free_packet is a pointer now procedure av_free_packet (pkt: PAVPacket); as it is with av_free() and av_freep() git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@814 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to '')
-rw-r--r--Game/Code/lib/ffmpeg/avcodec.pas5251
1 files changed, 3217 insertions, 2034 deletions
diff --git a/Game/Code/lib/ffmpeg/avcodec.pas b/Game/Code/lib/ffmpeg/avcodec.pas
index f5646fd8..dffe284e 100644
--- a/Game/Code/lib/ffmpeg/avcodec.pas
+++ b/Game/Code/lib/ffmpeg/avcodec.pas
@@ -1,2034 +1,3217 @@
- (*
- * 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 *)
-
-unit avcodec;
-
-{$IFDEF FPC}
- {$IFDEF LINUX}
- {$LINKLIB libavutil}
- {$LINKLIB libavcodec}
- {$ENDIF}
-
- {$MODE DELPHI } (* CAT *)
- {$PACKENUM 4} (* every enum type variables uses 4 bytes, CAT *)
- {$PACKRECORDS C} (* GCC compatible, Record Packing, CAT *)
-{$ENDIF}
-
-interface
-
-uses
- avutil, rational, opt; // CAT
-
-{$I version.inc}
-
-const
- AV_NOPTS_VALUE: int64 = $8000000000000000;
- AV_TIME_BASE = 1000000;
- AV_TIME_BASE_Q : TAVRational = (num:1; den:AV_TIME_BASE); (* added by CAT *)
-
-type
- TCodecID = (
- CODEC_ID_NONE, CODEC_ID_MPEG1VIDEO,
- CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1 or 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,
-
- //* 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,
- //* 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,
- //* 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, CODEC_ID_MP2= $15000,
- CODEC_ID_MP3, //* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
- CODEC_ID_AAC, CODEC_ID_MPEG4AAC, 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, CODEC_ID_QDM2,
- CODEC_ID_COOK, CODEC_ID_TRUESPEECH, CODEC_ID_TTA, CODEC_ID_SMACKAUDIO,
- CODEC_ID_QCELP, CODEC_ID_WAVPACK,
- //* subtitle codecs */
- CODEC_ID_DVD_SUBTITLE= $17000, CODEC_ID_DVB_SUBTITLE,
-
- CODEC_ID_MPEG2TS= $20000 //* _FAKE_ codec to indicate a raw MPEG2 transport
- // stream (only used by libavformat) */
- );
-
-//* CODEC_ID_MP3LAME is absolete */
-const
- CODEC_ID_MP3LAME = CODEC_ID_MP3;
-
- AVPALETTE_SIZE = 1024;
- AVPALETTE_COUNT = 256;
-
-type
- TCodecType = (
- CODEC_TYPE_UNKNOWN = -1,
- CODEC_TYPE_VIDEO,
- CODEC_TYPE_AUDIO,
- CODEC_TYPE_DATA,
- CODEC_TYPE_SUBTITLE,
- CODEC_TYPE_NB (* CAT#3 *)
- );
-
-//* currently unused, may be used if 24/32 bits samples ever supported */
-//* all in native endian */
- TSampleFormat = (
- SAMPLE_FMT_NONE = -1,
- SAMPLE_FMT_U8, ///< unsigned 8 bits
- SAMPLE_FMT_S16, ///< signed 16 bits
- SAMPLE_FMT_S24, ///< signed 24 bits
- SAMPLE_FMT_S32, ///< signed 32 bits
- SAMPLE_FMT_FLT ///< float
- );
-
-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, EPZS by default */
- TMotion_Est_ID = (
- ME_ZERO = 1,
- ME_FULL,
- ME_LOG,
- ME_PHODS,
- ME_EPZS,
- ME_X1,
- ME_HEX,
- ME_UMH,
- ME_ITER
- );
-
- 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
- AVDISCARD_FUCK = $FFFFFF
- );
-
- PRcOverride = ^TRcOverride;
- TRcOverride = record {16}
- start_frame: integer;
- end_frame: integer;
- qscale: integer; // if this is 0 then quality_factor will be used instead
- quality_factor: single;
- end;
-
-const
- FF_MAX_B_FRAMES = 16;
-
-(* encoding support
- these flags can be passed in AVCodecContext.flags before initing
- 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
-//* parent program gurantees that the input for b-frame containing streams is not written to
-// for at least s->max_b_frames+1 frames, if this is not set than 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
- CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization
- 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 */
- CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
- 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)
-
-(* Unsupported options :
- * Syntax Arithmetic coding (SAC)
- * Reference Picture Selection
- * Independant Segment Decoding */
-/* /Fx */
-/* codec capabilities *)
-
-const
- CODEC_CAP_DRAW_HORIZ_BAND = $001; ///< decoder can use draw_horiz_band callback
-(**
- * Codec uses get_buffer() for allocating buffers.
- * direct rendering method 1 *)
- CODEC_CAP_DR1 = $002;
-(* if 'parse_only' field is true, then avcodec_parse_frame() can be used *)
- CODEC_CAP_PARSE_ONLY = $004;
- CODEC_CAP_TRUNCATED = $008;
-//* codec can export data for HW decoding (XvMC) */
- CODEC_CAP_HWACCEL = $010;
-
-(**
- * 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 lavc *)
- id: integer;
-
- (*** width and height in 1/16 pel
- * - encoding: set by user.
- * - decoding: set by lavc *)
- width: integer;
- height: integer;
-
- (*** position of the top left corner in 1/16 pel for up to 3 fields/frames.
- * - encoding: set by user.
- * - decoding: set by lavc *)
- position: array [0..2] of array [0..1] of smallint;
- end;
-
-const
- FF_QSCALE_TYPE_MPEG1 = 0;
- FF_QSCALE_TYPE_MPEG2 = 1;
-
- 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;
- FF_SP_TYPE = 6;
-
- 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. *)
- PAVFrame = ^TAVFrame;
- TAVFrame = record {200}
- (*** pointer to the picture planes.
- * this might be different from the first allocated byte *)
- data: array [0..3] of pbyte;
- linesize: array [0..3] of integer;
- (*** pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer
- * this isn't used by lavc unless the default get/release_buffer() is used*)
- base: array [0..3] of pbyte;
- (*** 1 -> keyframe, 0-> not *)
- key_frame: integer;
- (*** picture type of the frame, see ?_TYPE below.*)
- pict_type: integer;
- (*** 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*)
- pts: int64;
- (*** picture number in bitstream order.*)
- coded_picture_number: integer;
- (*** picture number in display order.*)
- display_picture_number: integer;
- (*** quality (between 1 (good) and FF_LAMBDA_MAX (bad)) *)
- quality: integer;
- (*** buffer age (1->was last buffer and dint change, 2->..., ...).*)
- age: integer;
- (*** is this picture used as reference*)
- reference: integer;
- (*** QP table*)
- qscale_table: pchar;
- (*** QP store stride*)
- qstride: integer;
- (*** mbskip_table[mb]>=1 if MB didnt change*)
- 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 lavc *)
- motion_val: array [0..1] of pointer;
- (*** Macroblock type table
- * mb_type_base + mb_width + 2 *)
- mb_type: PCardinal;
- (*** log2 of the size of the block which a single vector in motion_val represents:
- * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)*)
- motion_subsample_log2: byte;
- (*** for some private data of the user*)
- opaque: pointer;
- (*** error*)
- error: array [0..3] of int64;
- (*** type of the buffer (to keep track of who has to dealloc data[*])
- * Note: user allocated (direct rendering) & internal buffers can not coexist currently*)
- _type: integer;
- (*** when decoding, this signal how much the picture must be delayed.
- * extra_delay = repeat_pict / (2*fps)*)
- repeat_pict: integer;
- qscale_type: integer;
- (*** The content of the picture is interlaced.*)
- interlaced_frame: integer;
- (*** if the content is interlaced, is top field displayed first.*)
- top_field_first: integer;
- (*** Pan scan.*)
- pan_scan: PAVPanScan;
- (*** tell user application that palette has changed from previous frame.*)
- palette_has_changed: integer;
- (*** Codec suggestion on buffer type if != 0
- * - decoding: set by lavc (before get_buffer() call))*)
- buffer_hints: integer;
- (*** DCT coeffitients*)
- dct_coeff: PsmallInt;
- (*** Motion referece frame index*)
- ref_index: array [0..1] of pshortint;
- end;
-
-const
- DEFAULT_FRAME_RATE_BASE = 1001000;
-
- 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_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_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_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_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_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;
-
- 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 distoration
-
- FF_AA_AUTO = 0;
- FF_AA_FASTINT = 1; //not implemented yet
- FF_AA_INT = 2;
- FF_AA_FLOAT = 3;
-
- FF_PROFILE_UNKNOWN = -99;
-
- 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 *)
-
-type
- PAVClass = ^TAVClass;
- PAVCodecContext = ^TAVCodecContext;
- PAVCodec = ^TAVCodec;
- PAVPaletteControl = ^TAVPaletteControl;
-
- 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;
-
- TAVCodecContext = record {720}
- (*** Info 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 lavc. 0 or some bitrate if this info is available in the stream *)
- bit_rate: integer;
- (*** 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: integer;
- (*** CODEC_FLAG_*.
- * - encoding: set by user.
- * - decoding: set by user. *)
- flags: integer;
- (*** some codecs needs additionnal format info. It is stored here
- * - encoding: set by user.
- * - decoding: set by lavc. (FIXME is this ok?) *)
- sub_id: integer;
-
- (**
- * 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) [7, 8 are x264 specific, 9 is snow specific]
- * - encoding: MUST be set by user.
- * - decoding: unused *)
- me_method: integer;
-
- (**
- * some codecs need / can use extra-data 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
- * then extradata_size to avoid prolems if its read with the bitstream reader
- * the bytewise contents of extradata must not depend on the architecture or cpu endianness
- * - encoding: set/allocated/freed by lavc.
- * - decoding: set/allocated/freed by user.
- *)
- extradata: pbyte;
- extradata_size: integer;
-
- (**
- * 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 lavc. *)
- time_base: TAVRational;
-
- (* video only *)
- (*** picture width / height.
- * - encoding: MUST be set by user.
- * - decoding: set by lavc.
- * Note, for compatibility its possible to set this instead of
- * coded_width/height before decoding *)
- width, height: integer;
- (*** the number of pictures in a group of pitures, or 0 for intra_only.
- * - encoding: set by user.
- * - decoding: unused *)
- gop_size: integer;
- (*** pixel format, see PIX_FMT_xxx.
- * - encoding: set by user.
- * - decoding: set by lavc. *)
- pix_fmt: TAVPixelFormat;
- (*** Frame rate emulation. If not zero lower layer (i.e. format handler)
- * has to read frames at native frame rate.
- * - encoding: set by user.
- * - decoding: unused. *)
- rate_emu: integer;
- (*** if non NULL, 'draw_horiz_band' is called by the libavcodec
- * decoder to draw an horizontal band. It improve cache usage. Not
- * all codecs can do that. You must check the codec capabilities
- * before
- * - 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;
- const src: PAVFrame; offset: PInteger;
- y: integer; _type: integer; height: integer); cdecl;
-
- (* audio only *)
- sample_rate: integer; ///< samples per sec
- channels: integer;
- (*** audio sample format.
- * - encoding: set by user.
- * - decoding: set by lavc. *)
- sample_fmt: TSampleFormat; ///< sample format, currenly unused
-
- (* the following data should not be initialized *)
- (*** samples per packet. initialized when calling 'init' *)
- frame_size: integer;
- frame_number: integer; ///< audio or video frame number
- real_pict_num: integer; ///< 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 lavc.
- * - decoding: unused *)
- delay: integer;
-
- (* - encoding parameters *)
- qcompress: single; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
- qblur: single; ///< amount of qscale smoothing over time (0.0-1.0)
-
- (*** minimum quantizer.
- * - encoding: set by user.
- * - decoding: unused *)
- qmin: integer;
-
- (*** maximum quantizer.
- * - encoding: set by user.
- * - decoding: unused *)
- qmax: integer;
-
- (*** maximum quantizer difference etween frames.
- * - encoding: set by user.
- * - decoding: unused *)
- max_qdiff: integer;
-
- (*** 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: integer;
-
- (*** qscale factor between ip and b frames.
- * - encoding: set by user.
- * - decoding: unused *)
- b_quant_factor: single;
-
- (** obsolete FIXME remove *)
- rc_strategy: integer;
- b_frame_strategy: integer;
-
- (*** hurry up amount.
- * deprecated in favor of skip_idct and skip_frame
- * - encoding: unused
- * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header *)
- hurry_up: integer;
-
- codec: PAVCodec;
-
- priv_data: pointer;
-
- (* unused, FIXME remove*)
- rtp_mode: integer;
-
- rtp_payload_size: integer; (* 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: integer; mb_nb: integer); cdecl;
-
- (* statistics, used for 2-pass encoding *)
- mv_bits: integer;
- header_bits: integer;
- i_tex_bits: integer;
- p_tex_bits: integer;
- i_count: integer;
- p_count: integer;
- skip_count: integer;
- misc_bits: integer;
-
- (*** number of bits used for the previously encoded frame.
- * - encoding: set by lavc
- * - decoding: unused *)
- frame_bits: integer;
-
- (*** 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 workaround some encoder bugs
- * - encoding: set by user, if not then the default based on codec_id will be used
- * - decoding: set by user, will be converted to upper case by lavc during init *)
- codec_tag: cardinal; // можно array [0..3] of char - тогда видно FOURCC
-// codec_tag: array [0..3] of char;
-
- (*** workaround bugs in encoders which sometimes cannot be detected automatically.
- * - encoding: set by user
- * - decoding: set by user *)
- workaround_bugs: integer;
-
- (*** luma single coeff elimination threshold.
- * - encoding: set by user
- * - decoding: unused *)
- luma_elim_threshold: integer;
-
- (*** chroma single coeff elimination threshold.
- * - encoding: set by user
- * - decoding: unused *)
- chroma_elim_threshold: integer;
-
- (*** strictly follow the std (MPEG4, ...).
- * - encoding: set by user
- * - decoding: unused *)
- strict_std_compliance: integer;
-
- (*** qscale offset 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_offset: single;
-
- (*** error resilience higher values will detect more errors but may missdetect
- * some more or less valid parts as errors.
- * - encoding: unused
- * - decoding: set by user *)
- error_resilience: integer;
-
- (*** 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 lavc
- * 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 lavc, user can override *)
- get_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; cdecl;
-
- (*** called to release buffers which where 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 lavc, 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 lavc
- * - decoding: set by lavc *)
- has_b_frames: integer;
-
- (*** number of bytes per packet if constant and known or 0
- * used by some WAV based audio codecs *)
- block_align: integer;
-
- parse_only: integer; (* - 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: integer;
-
- (*** pass1 encoding statistics output buffer.
- * - encoding: set by lavc
- * - 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: single;
-
- rc_qmod_amp: single;
- rc_qmod_freq: integer;
-
- (*** ratecontrol override, see RcOverride.
- * - encoding: allocated/set/freed by user.
- * - decoding: unused *)
- rc_override: PRcOverride;
- rc_override_count: integer;
-
- (*** rate control equation.
- * - encoding: set by user
- * - decoding: unused *)
- rc_eq: pchar;
-
- (*** maximum bitrate.
- * - encoding: set by user.
- * - decoding: unused *)
- rc_max_rate: integer;
-
- (*** minimum bitrate.
- * - encoding: set by user.
- * - decoding: unused *)
- rc_min_rate: integer;
-
- (*** decoder bitstream buffer size.
- * - encoding: set by user.
- * - decoding: unused *)
- rc_buffer_size: integer;
- rc_buffer_aggressivity: single;
-
- (*** 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: single;
-
- (*** qscale offset between p and i frames.
- * - encoding: set by user.
- * - decoding: unused *)
- i_quant_offset: single;
-
- (*** initial complexity for pass1 ratecontrol.
- * - encoding: set by user.
- * - decoding: unused *)
- rc_initial_cplx: single;
-
- (*** dct algorithm, see FF_DCT_* below.
- * - encoding: set by user
- * - decoding: unused *)
- dct_algo: integer;
-
- (*** luminance masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused *)
- lumi_masking: single;
-
- (*** temporary complexity masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused *)
- temporal_cplx_masking: single;
-
- (*** spatial complexity masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused *)
- spatial_cplx_masking: single;
-
- (** * p block masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused *)
- p_masking: single;
-
- (*** darkness masking (0-> disabled).
- * - encoding: set by user
- * - decoding: unused *)
- dark_masking: single;
-
- (* for binary compatibility *)
- unused: integer;
-
- (*** idct algorithm, see FF_IDCT_* below.
- * - encoding: set by user
- * - decoding: set by user *)
- idct_algo: integer;
-
- (*** slice count.
- * - encoding: set by lavc
- * - decoding: set by user (or 0) *)
- slice_count: integer;
-
- (*** slice offsets in the frame in bytes.
- * - encoding: set/allocated by lavc
- * - decoding: set/allocated by user (or NULL) *)
- slice_offset: Pinteger;
-
- (*** error concealment flags.
- * - encoding: unused
- * - decoding: set by user *)
- error_concealment: integer;
-
- (*** dsp_mask could be add used to disable unwanted CPU features
- * CPU features (i.e. MMX, SSE. ...)
- *
- * with 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: cardinal;
-
- (*** bits per sample/pixel from the demuxer (needed for huffyuv).
- * - encoding: set by lavc
- * - decoding: set by user *)
- bits_per_sample: integer;
-
- (*** prediction method (needed for huffyuv).
- * - encoding: set by user
- * - decoding: unused *)
- prediction_method: integer;
-
- (*** sample aspect ratio (0 if unknown).
- * numerator and denominator must be relative prime and smaller then 256 for some video standards
- * - encoding: set by user.
- * - decoding: set by lavc. *)
- sample_aspect_ratio: TAVRational;
-
- (*** the picture in the bitstream.
- * - encoding: set by lavc
- * - decoding: set by lavc *)
- coded_frame: PAVFrame;
-
- (*** debug.
- * - encoding: set by user.
- * - decoding: set by user. *)
- debug: integer;
-
- (*** debug.
- * - encoding: set by user.
- * - decoding: set by user. *)
- debug_mv: integer;
-
- (** error.
- * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
- * - decoding: unused *)
- error: array [0..3] of int64;
-
- (*** minimum MB quantizer.
- * - encoding: unused
- * - decoding: unused *)
- mb_qmin: integer;
-
- (*** maximum MB quantizer.
- * - encoding: unused
- * - decoding: unused *)
- mb_qmax: integer;
-
- (*** motion estimation compare function.
- * - encoding: set by user.
- * - decoding: unused *)
- me_cmp: integer;
-
- (*** subpixel motion estimation compare function.
- * - encoding: set by user.
- * - decoding: unused *)
- me_sub_cmp: integer;
- (*** macroblock compare function (not supported yet).
- * - encoding: set by user.
- * - decoding: unused *)
- mb_cmp: integer;
- (*** interlaced dct compare function
- * - encoding: set by user.
- * - decoding: unused *)
- ildct_cmp: integer;
- (*** ME diamond size & shape.
- * - encoding: set by user.
- * - decoding: unused *)
- dia_size: integer;
-
- (*** amount of previous MV predictors (2a+1 x 2a+1 square).
- * - encoding: set by user.
- * - decoding: unused *)
- last_predictor_count: integer;
-
- (*** pre pass for motion estimation.
- * - encoding: set by user.
- * - decoding: unused *)
- pre_me: integer;
-
- (*** motion estimation pre pass compare function.
- * - encoding: set by user.
- * - decoding: unused *)
- me_pre_cmp: integer;
-
- (*** ME pre pass diamond size & shape.
- * - encoding: set by user.
- * - decoding: unused *)
- pre_dia_size: integer;
-
- (*** subpel ME quality.
- * - encoding: set by user.
- * - decoding: unused *)
- me_subpel_quality: integer;
-
- (*** callback to negotiate the pixelFormat.
- * @param fmt is the list of formats which are supported by the codec,
- * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
- * the first is allways the native one
- * @return the choosen format
- * - encoding: unused
- * - decoding: set by user, if not set then the native format will always be choosen
- *)
- get_format: function (s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat; cdecl;
-
- (*** DTG active format information (additionnal aspect ratio
- * information only used in DVB MPEG2 transport streams). 0 if
- * not set.
- * - encoding: unused.
- * - decoding: set by decoder *)
- dtg_active_format: integer;
-
- (*** Maximum motion estimation search range in subpel units.
- * if 0 then no limit
- * - encoding: set by user.
- * - decoding: unused. *)
- me_range: integer;
-
- (*** intra quantizer bias.
- * - encoding: set by user.
- * - decoding: unused *)
- intra_quant_bias: integer;
-
- (*** inter quantizer bias.
- * - encoding: set by user.
- * - decoding: unused *)
- inter_quant_bias: integer;
-
- (*** color table ID.
- * - encoding: unused.
- * - decoding: which clrtable should be used for 8bit RGB images
- * table have to be stored somewhere FIXME *)
- color_table_id: integer;
-
- (*** internal_buffer count.
- * Don't touch, used by lavc default_get_buffer() *)
- internal_buffer_count: integer;
-
- (*** internal_buffers.
- * Don't touch, used by lavc default_get_buffer() *)
- internal_buffer: pointer;
-
- (*** global quality for codecs which cannot change it per frame.
- * this should be proportional to MPEG1/2/4 qscale.
- * - encoding: set by user.
- * - decoding: unused *)
- global_quality: integer;
-
- (*** coder type
- * - encoding: set by user.
- * - decoding: unused *)
- coder_type: integer;
-
- (*** context model
- * - encoding: set by user.
- * - decoding: unused *)
- context_model: integer;
-
- (*** slice flags
- * - encoding: unused
- * - decoding: set by user. *)
- slice_flags: integer;
-
- (*** XVideo Motion Acceleration
- * - encoding: forbidden
- * - decoding: set by decoder *)
- xvmc_acceleration: integer;
-
- (*** macroblock decision mode
- * - encoding: set by user.
- * - decoding: unused *)
- mb_decision: integer;
-
- (*** custom intra quantization matrix
- * - encoding: set by user, can be NULL
- * - decoding: set by lavc *)
- intra_matrix: Pword;
-
- (*** custom inter quantization matrix
- * - encoding: set by user, can be NULL
- * - decoding: set by lavc *)
- inter_matrix: Pword;
-
- (*** fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
- * this is used to workaround some encoder bugs
- * - encoding: unused
- * - decoding: set by user, will be converted to upper case by lavc during init *)
- stream_codec_tag: array [0..3] of char; //cardinal;
-
- (*** scene change detection threshold.
- * 0 is default, larger means fewer detected scene changes
- * - encoding: set by user.
- * - decoding: unused *)
- scenechange_threshold: integer;
-
- (*** minimum lagrange multipler
- * - encoding: set by user.
- * - decoding: unused *)
- lmin: integer;
-
- (*** maximum lagrange multipler
- * - encoding: set by user.
- * - decoding: unused *)
- lmax: integer;
-
- (*** 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: integer;
-
- (*** called at the beginning of a frame to get cr buffer for it.
- * buffer type (size, hints) must be the same. lavc won't check it.
- * lavc 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 lavc, user can override *)
- reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; 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: integer;
- inter_threshold: integer;
-
- (*** CODEC_FLAG2_*.
- * - encoding: set by user.
- * - decoding: set by user. *)
- flags2: integer;
-
- (*** simulates errors in the bitstream to test error concealment.
- * - encoding: set by user.
- * - decoding: unused. *)
- error_rate: integer;
-
- (*** MP3 antialias algorithm, see FF_AA_* below.
- * - encoding: unused
- * - decoding: set by user *)
- antialias_algo: integer;
-
- (*** Quantizer noise shaping.
- * - encoding: set by user
- * - decoding: unused *)
- quantizer_noise_shaping: integer;
-
- (*** Thread count.
- * is used to decide how many independant tasks should be passed to execute()
- * - encoding: set by user
- * - decoding: set by user *)
- thread_count: integer;
-
- (*** the codec may call this to execute several independant 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 lavc, user can override
- * - decoding: set by lavc, user can override *)
- execute: function (c: PAVCodecContext; func: pointer; arg: PPointer; ret: PInteger; count: integer): integer; 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. under which no motion estimation is
- * performed, but instead the user specified motion vectors are used
- * - encoding: set by user
- * - decoding: unused *)
- me_threshold: integer;
-
- (*** Macroblock threshold. under which the user specified macroblock types will be used
- * - encoding: set by user
- * - decoding: unused *)
- mb_threshold: integer;
-
- (*** precision of the intra dc coefficient - 8.
- * - encoding: set by user
- * - decoding: unused *)
- intra_dc_precision: integer;
-
- (*** noise vs. sse weight for the nsse comparsion function.
- * - encoding: set by user
- * - decoding: unused *)
- nsse_weight: integer;
-
- (*** number of macroblock rows at the top which are skipped.
- * - encoding: unused
- * - decoding: set by user *)
- skip_top: integer;
-
- (*** number of macroblock rows at the bottom which are skipped.
- * - encoding: unused
- * - decoding: set by user *)
- skip_bottom: integer;
-
- (*** profile
- * - encoding: set by user
- * - decoding: set by lavc *)
- profile: integer;
-
- (*** level
- * - encoding: set by user
- * - decoding: set by lavc *)
- level: integer;
-
- (*** low resolution decoding. 1-> 1/2 size, 2->1/4 size
- * - encoding: unused
- * - decoding: set by user *)
- lowres: integer;
-
- (*** bitsream 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: integer;
-
- (*** frame skip threshold
- * - encoding: set by user
- * - decoding: unused *)
- frame_skip_threshold: integer;
-
- (*** frame skip factor
- * - encoding: set by user
- * - decoding: unused *)
- frame_skip_factor: integer;
-
- (*** frame skip exponent
- * - encoding: set by user
- * - decoding: unused *)
- frame_skip_exp: integer;
-
- (*** frame skip comparission function
- * - encoding: set by user.
- * - decoding: unused *)
- frame_skip_cmp: integer;
-
- (*** border processing masking. raises the quantizer for mbs on the borders
- * of the picture.
- * - encoding: set by user
- * - decoding: unused *)
- border_masking: single;
-
- (*** minimum MB lagrange multipler.
- * - encoding: set by user.
- * - decoding: unused *)
- mb_lmin: integer;
-
- (*** maximum MB lagrange multipler.
- * - encoding: set by user.
- * - decoding: unused *)
- mb_lmax: integer;
-
- (***
- * - encoding: set by user.
- * - decoding: unused *)
- me_penalty_compensation: integer;
-
- (***
- * - 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: integer;
-
- (** *
- * - encoding: set by user.
- * - decoding: unused *)
- brd_scale: integer;
-
- (**
- * constant rate factor - quality-based VBR - values ~correspond to qps
- * - encoding: set by user.
- * - decoding: unused *)
- crf: integer;
-
- (**
- * constant quantization parameter rate control method
- * - encoding: set by user.
- * - decoding: unused *)
- cqp: integer;
-
- (**
- * minimum gop size
- * - encoding: set by user.
- * - decoding: unused *)
- keyint_min: integer;
-
- (**
- * number of reference frames
- * - encoding: set by user.
- * - decoding: unused *)
- refs: integer;
-
- (**
- * chroma qp offset from luma
- * - encoding: set by user.
- * - decoding: unused *)
- chromaoffset: integer;
-
- (**
- * influences how often b-frames are used
- * - encoding: set by user.
- * - decoding: unused *)
- bframebias: integer;
-
- (**
- * trellis RD quantization
- * - encoding: set by user.
- * - decoding: unused *)
- trellis: integer;
-
- (**
- * reduce fluctuations in qp (before curve compression)
- * - encoding: set by user.
- * - decoding: unused *)
- complexityblur: single;
-
- (**
- * in-loop deblocking filter alphac0 parameter
- * alpha is in the range -6...6
- * - encoding: set by user.
- * - decoding: unused *)
- deblockalpha: integer;
-
- (**
- * in-loop deblocking filter beta parameter
- * beta is in the range -6...6
- * - encoding: set by user.
- * - decoding: unused *)
- deblockbeta: integer;
-
- (**
- * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
- * - encoding: set by user.
- * - decoding: unused *)
- partitions: integer;
-
- (**
- * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
- * - encoding: set by user.
- * - decoding: unused *)
- directpred: integer;
-
- (**
- * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
- * - encoding: set by user.
- * - decoding: unused *)
- cutoff: integer;
-
- (**
- * multiplied by qscale for each frame and added to scene_change_score
- * - encoding: set by user.
- * - decoding: unused *)
- scenechange_factor: integer;
-
- (** *
- * note: value depends upon the compare functin used for fullpel ME
- * - encoding: set by user.
- * - decoding: unused *)
- mv0_threshold: integer;
-
- (**
- * adjusts sensitivity of b_frame_strategy 1
- * - encoding: set by user.
- * - decoding: unused *)
- b_sensitivity: integer;
-
- (**
- * - encoding: set by user.
- * - decoding: unused *)
- compression_level: integer;
-
- (**
- * sets whether to use LPC mode - used by FLAC encoder
- * - encoding: set by user.
- * - decoding: unused. *)
- use_lpc: integer;
-
- (**
- * LPC coefficient precision - used by FLAC encoder
- * - encoding: set by user.
- * - decoding: unused. *)
- lpc_coeff_precision: integer;
-
- (**
- * - encoding: set by user.
- * - decoding: unused. *)
- min_prediction_order: integer;
-
- (**
- * - encoding: set by user.
- * - decoding: unused. *)
- max_prediction_order: integer;
-
- (**
- * search method for selecting prediction order
- * - encoding: set by user.
- * - decoding: unused. *)
- prediction_order_method: integer;
-
- (**
- * - encoding: set by user.
- * - decoding: unused. *)
- min_partition_order: integer;
-
- (**
- * - encoding: set by user.
- * - decoding: unused. *)
- max_partition_order: integer;
- end;
-
-(**
- * AVCodec.
- *)
- TAVCodec = record
- name: pchar;
- _type: TCodecType;
- id: TCodecID;
- priv_data_size: integer;
- init: function (avctx: PAVCodecContext): integer; cdecl; (* typo corretion by the Creative CAT *)
- encode: function (avctx: PAVCodecContext; buf: pchar; buf_size: integer; data: pointer): integer; cdecl;
- close: function (avctx: PAVCodecContext): integer; cdecl;
- decode: function (avctx: PAVCodecContext; outdata: pointer; outdata_size: PInteger;
- buf: pchar; buf_size: integer): integer; cdecl;
- capabilities: integer;
-// todo: check this ->
-// void *dummy; // FIXME remove next time we break binary compatibility
- next: PAVCodec;
- flush: procedure (avctx: PAVCodecContext); cdecl;
- supported_framerates: PAVRational; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
- pix_fmts: PAVPixelFormat; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
- 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 integer; ///< number of bytes per line
- end;
-
-(**
- * AVPaletteControl
- * This structure defines a method for communicating palette changes
- * between and demuxer and a decoder.
- * this is totally broken, palette changes should be sent as AVPackets
- *)
- TAVPaletteControl = record
- (* demuxer sets this to 1 to indicate the palette has changed;
- * decoder resets to 0 *)
- palette_changed: integer;
-
- (* 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 cardinal;
- end;
-
- PAVSubtitleRect = ^TAVSubtitleRect;
- TAVSubtitleRect = record
- x: word;
- y: word;
- w: word;
- h: word;
- nb_colors: word;
- linesize: integer;
- rgba_palette: PCardinal;
- bitmap: pchar;
- end;
-
- PAVSubtitle = ^TAVSubtitle;
- TAVSubtitle = record {20}
- format: word; (* 0 = graphics *)
- start_display_time: cardinal; (* relative to packet pts, in ms *)
- end_display_time: cardinal; (* relative to packet pts, in ms *)
- num_rects: cardinal;
- rects: PAVSubtitleRect;
- end;
-
-
-(* resample.c *)
-
- PReSampleContext = pointer;
- PAVResampleContext = pointer;
- PImgReSampleContext = pointer;
-
-function audio_resample_init (output_channels: integer; input_channels: integer;
- output_rate: integer; input_rate: integer): PReSampleContext;
- cdecl; external av__codec;
-
-function audio_resample (s: PReSampleContext; output: PWord; input: PWord; nb_samples: integer): integer;
- cdecl; external av__codec;
-
-procedure audio_resample_close (s: PReSampleContext);
- cdecl; external av__codec;
-
-
-function av_resample_init (out_rate: integer; in_rate: integer; filter_length: integer;
- log2_phase_count: integer; linear: integer; cutoff: double): PAVResampleContext;
- cdecl; external av__codec;
-
-function av_resample (c: PAVResampleContext; dst: PWord; src: PWord; consumed: PInteger;
- src_size: integer; dst_size: integer; update_ctx: integer): integer;
- cdecl; external av__codec;
-
-procedure av_resample_compensate (c: PAVResampleContext; sample_delta: integer;
- compensation_distance: integer);
- cdecl; external av__codec;
-
-procedure av_resample_close (c: PAVResampleContext);
- cdecl; external av__codec;
-
-
-(* YUV420 format is assumed ! *)
-
- function img_resample_init (output_width: integer; output_height: integer;
- input_width: integer; input_height: integer): PImgReSampleContext;
- cdecl; external av__codec;
-
- function img_resample_full_init (owidth: integer; oheight: integer;
- iwidth: integer; iheight: integer;
- topBand: integer; bottomBand: integer;
- leftBand: integer; rightBand: integer;
- padtop: integer; padbottom: integer;
- padleft: integer; padright: integer): PImgReSampleContext;
- cdecl; external av__codec;
-
- procedure img_resample (s: PImgReSampleContext; output: PAVPicture; const input: PAVPicture);
- cdecl; external av__codec;
-
- procedure img_resample_close (s: PImgReSampleContext);
- cdecl; external av__codec;
-
-(**
- * 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 0 if successful, -1 if not.
- *)
- function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat;
- width: integer; height: integer): integer;
- cdecl; external av__codec;
-
-
-(* Free a picture previously allocated by avpicture_alloc. *)
- procedure avpicture_free (picture: PAVPicture);
- cdecl; external av__codec;
-
- function avpicture_fill (picture: PAVPicture; ptr: pointer;
- pix_fmt: TAVPixelFormat; width: integer; height: integer): integer;
- cdecl; external av__codec;
-
- function avpicture_layout (const src: PAVPicture; pix_fmt: TAVPixelFormat;
- width: integer; height: integer;
- dest: pchar; dest_size: integer): integer;
- cdecl; external av__codec;
-
- function avpicture_get_size (pix_fmt: TAVPixelFormat; width: integer; height: integer): integer;
- cdecl; external av__codec;
-
- procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; h_shift: Pinteger; v_shift: pinteger);
- 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: integer; height: integer);
- cdecl; external av__codec;
-
- function avcodec_get_pix_fmt(const name: pchar): TAVPixelFormat;
- cdecl; external av__codec;
-
- function avcodec_pix_fmt_to_codec_tag(p: TAVPixelFormat): cardinal;
- cdecl; external av__codec;
-
- function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat;
- has_alpha: integer): integer;
- cdecl; external av__codec;
-
- function avcodec_find_best_pix_fmt (pix_fmt_mask: integer; src_pix_fmt: TAVPixelFormat;
- has_alpha: integer; loss_ptr: pinteger): integer;
- cdecl; external av__codec;
-
- function img_get_alpha_info (const src: PAVPicture;
- pix_fmt: TAVPixelFormat;
- width: integer; height: integer): integer;
- cdecl; external av__codec;
-
-
-(* convert among pixel formats *)
- function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat;
- const src: PAVPicture; pix_fmt: TAVPixelFormat;
- width: integer; height: integer): integer;
- cdecl; external av__codec;
-
-(* deinterlace a picture *)
- function avpicture_deinterlace (dst: PAVPicture; const src: PAVPicture;
- pix_fmt: TAVPixelFormat; width: integer; height: integer): integer;
- cdecl; external av__codec;
-
-(* returns LIBAVCODEC_VERSION_INT constant *)
- function avcodec_version (): cardinal;
- cdecl; external av__codec;
-
-(* returns LIBAVCODEC_BUILD constant *)
- function avcodec_build (): cardinal;
- cdecl; external av__codec;
-
- procedure avcodec_init ();
- cdecl; external av__codec;
-
- procedure register_avcodec (format: PAVCodec);
- cdecl; external av__codec;
-
- function avcodec_find_encoder (id: TCodecID): PAVCodec;
- cdecl; external av__codec;
- function avcodec_find_encoder_by_name (name: pchar): PAVCodec;
- cdecl; external av__codec;
- function avcodec_find_decoder(id: TCodecID): PAVCodec;
- cdecl; external av__codec;
- function avcodec_find_decoder_by_name (name: pchar): PAVCodec;
- cdecl; external av__codec;
- procedure avcodec_string(buf: pchar; buf_size: integer; enc: PAVCodecContext; encode: integer);
- cdecl; external av__codec;
-
- procedure avcodec_get_context_defaults (s: PAVCodecContext);
- cdecl; external av__codec;
- function avcodec_alloc_context : PAVCodecContext;
- cdecl; external av__codec;
-(* favourite of The Creative CAT
- function avcodec_alloc_context (): PAVCodecContext;
- cdecl; external av__codec; *)
- procedure avcodec_get_frame_defaults (pic: PAVFrame);
- cdecl; external av__codec;
- function avcodec_alloc_frame : PAVFrame;
- cdecl; external av__codec;
-(* favourite of The Creative CAT
- function avcodec_alloc_frame (): PAVFrame;
- cdecl; external av__codec; *)
-
- function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): integer;
- 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): integer;
- cdecl; external av__codec;
- procedure avcodec_align_dimensions(s: PAVCodecContext; width: Pinteger; height: PInteger);
- cdecl; external av__codec;
- function avcodec_check_dimensions (av_log_ctx: pointer; w: cardinal; h: cardinal): integer;
- cdecl; external av__codec;
- function avcodec_default_get_format(s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat;
- cdecl; external av__codec;
-
- function avcodec_thread_init (s: PAVCodecContext; thread_count: integer): integer;
- cdecl; external av__codec;
- procedure avcodec_thread_free (s: PAVCodecContext);
- cdecl; external av__codec;
- function avcodec_thread_execute (s: PAVCodecContext; func: pointer; arg: PPointer; ret: Pinteger; count: integer): integer;
- cdecl; external av__codec;
- function avcodec_default_execute (s: PAVCodecContext; func: pointer; arg: PPointer; ret: Pinteger; count: integer): integer;
- cdecl; external av__codec;
-
-
-//FIXME func typedef
-
-(**
- * opens / inits the AVCodecContext.
- * not thread save!
- *)
- function avcodec_open (avctx: PAVCodecContext; codec: PAVCodec): integer;
- cdecl; external av__codec;
-
-
-(**
- * Decode an audio frame.
- *
- * @param avctx the codec context.
- * @param samples output buffer, 16 byte aligned
- * @param frame_size_ptr the output buffer size in bytes, zero if no frame could be compressed
- * @param buf input buffer, 16 byte aligned
- * @param buf_size the input buffer size
- * @return 0 if successful, -1 if not.
- *)
-
-(** This comment was added by the Creative CAT. frame_size_ptr was changed to
- variable refference.
-
- * @deprecated Use avcodec_decode_audio2() instead.
- *)
-
- function avcodec_decode_audio (avctx: PAVCodecContext; samples: Pword;
- var frame_size_ptr: integer;
- buf: pchar; buf_size: integer): integer;
- cdecl; external av__codec;
-(* decode a frame.
- * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
- * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
- * @param buf_size the size of the buffer in bytes
- * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
- * @return -1 if error, otherwise return the number of
- * bytes used. *)
-
- function avcodec_decode_audio2(avctx : PAVCodecContext; samples : PWord;
- var frame_size_ptr : integer;
- buf: pchar; buf_size: integer): integer;
- cdecl; external av__codec;
-(* Added by The Creative CAT
-/**
- * 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: integer; (* favour of The Creative CAT *)
- buf: PByte; buf_size: integer): integer;
- cdecl; external av__codec;
-
- function avcodec_decode_subtitle (avctx: PAVCodecContext; sub: PAVSubtitle;
- got_sub_ptr: pinteger;
- const buf: pchar; buf_size: integer): integer;
- cdecl; external av__codec;
- function avcodec_parse_frame (avctx: PAVCodecContext; pdata: PPointer;
- data_size_ptr: pinteger;
- buf: pchar; buf_size: integer): integer;
- cdecl; external av__codec;
-
- function avcodec_encode_audio (avctx: PAVCodecContext; buf: PByte;
- buf_size: integer; const samples: PWord): integer;
- cdecl; external av__codec;
-
- (* avcodec_encode_video: -1 if error *)
- (* type of the second argument is changed by The Creative CAT *)
- function avcodec_encode_video (avctx: PAVCodecContext; buf: PByte;
- buf_size: integer; pict: PAVFrame): integer;
- cdecl; external av__codec;
- function avcodec_encode_subtitle (avctx: PAVCodecContext; buf: pchar;
- buf_size: integer; const sub: PAVSubtitle): integer;
- cdecl; external av__codec;
- function avcodec_close (avctx: PAVCodecContext): integer;
- cdecl; external av__codec;
-
- procedure avcodec_register_all ();
- cdecl; external av__codec;
-
- procedure avcodec_flush_buffers (avctx: PAVCodecContext);
- cdecl; external av__codec;
- procedure avcodec_default_free_buffers (s: PAVCodecContext);
- cdecl; external av__codec;
-
-(* misc usefull functions *)
-
-(**
- * returns a single letter to describe the picture type
- *)
- function av_get_pict_type_char (pict_type: integer): char;
- cdecl; external av__codec;
-
-
-(**
- * returns codec bits per sample
- *)
-function av_get_bits_per_sample (codec_id: TCodecID): integer;
- cdecl; external av__codec;
-
-const
- AV_PARSER_PTS_NB = 4;
- PARSER_FLAG_COMPLETE_FRAMES = $0001;
-
-type
- PAVCodecParserContext = ^TAVCodecParserContext;
- PAVCodecParser = ^TAVCodecParser;
-
- TAVCodecParserContext = record
- priv_data: pointer;
- parser: PAVCodecParser;
- frame_offset: int64; (* offset of the current frame *)
- cur_offset: int64; (* current offset (incremented by each av_parser_parse()) *)
- last_frame_offset: int64; (* offset of the last frame *)
- (* video info *)
- pict_type: integer; (* XXX: put it back in AVCodecContext *)
- repeat_pict: integer; (* XXX: put it back in AVCodecContext *)
- pts: int64; (* pts of the current frame *)
- dts: int64; (* dts of the current frame *)
-
- (* private data *)
- last_pts: int64;
- last_dts: int64;
- fetch_timestamp: integer;
-
- cur_frame_start_index: integer;
- cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of int64;
- cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of int64;
- cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of int64;
-
- flags: integer;
- end;
-
- TAVCodecParser = record
- codec_ids: array [0..4] of integer; (* several codec IDs are permitted *)
- priv_data_size: integer;
- parser_init: function (s: PAVCodecParserContext): integer; cdecl;
- parser_parse: function (s: PAVCodecParserContext; avctx: PAVCodecContext;
- poutbuf: PPointer; poutbuf_size: PInteger;
- const buf: pchar; buf_size: integer): integer; cdecl;
- parser_close: procedure (s: PAVCodecParserContext); cdecl;
- split: function (avctx: PAVCodecContext; const buf: pchar;
- buf_size: integer): integer; cdecl;
- next: PAVCodecParser;
- end;
-
- procedure av_register_codec_parser (parser: PAVCodecParser);
- cdecl; external av__codec;
-
- function av_parser_init (codec_id: integer): PAVCodecParserContext;
- cdecl; external av__codec;
-
- function av_parser_parse (s: PAVCodecParserContext;
- avctx: PAVCodecContext;
- poutbuf: PPointer; poutbuf_size: pinteger;
- const buf: pchar; buf_size: integer;
- pts: int64; dts: int64): integer;
- cdecl; external av__codec;
- function av_parser_change (s: PAVCodecParserContext;
- avctx: PAVCodecContext;
- poutbuf: PPointer; poutbuf_size: PInteger;
- const buf: pchar; buf_size: integer; keyframe: integer): integer;
- 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: integer;
- filter: function (bsfc: PAVBitStreamFilterContext;
- avctx: PAVCodecContext; args: pchar;
- poutbuf: PPointer; poutbuf_size: PInteger;
- buf: PByte; buf_size: integer; keyframe: integer): integer; cdecl;
- 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: PInteger;
- buf: PByte; buf_size: integer; keyframe: integer): integer;
- cdecl; external av__codec;
-procedure av_bitstream_filter_close (bsf: PAVBitStreamFilterContext);
- cdecl; external av__codec;
-
-
-(* memory *)
- procedure av_fast_realloc (ptr: pointer; size: PCardinal; min_size: Cardinal);
- cdecl; external av__codec;
-(* for static data only *)
-(* call av_free_static to release all staticaly allocated tables *)
- procedure av_free_static ();
- cdecl; external av__codec;
-
- procedure av_mallocz_static(size: cardinal);
- cdecl; external av__codec;
-
- procedure av_realloc_static(ptr: pointer; size: Cardinal);
- cdecl; external av__codec;
-
- procedure img_copy (dst: PAVPicture; const src: PAVPicture;
- pix_fmt: TAVPixelFormat; width: integer; height: integer);
- cdecl; external av__codec;
-
- function img_crop (dst: PAVPicture; const src: PAVPicture;
- pix_fmt: TAVPixelFormat; top_band, left_band: integer): integer;
- cdecl; external av__codec;
-
- function img_pad (dst: PAVPicture; const src: PAVPicture; height, width: integer;
- pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: integer;
- color: PInteger): integer;
- cdecl; external av__codec;
-
-implementation
-
-end.
+(*
+ * 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 *)
+
+// Min. version: 51.16.0
+// Max. version: 51.49.0, Revision: 11352
+
+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}
+
+interface
+
+uses
+ avutil,
+ rational,
+ opt,
+ UConfig;
+
+const
+ (* Max. supported version by this header *)
+ LIBAVCODEC_MAX_VERSION_MAJOR = 51;
+ LIBAVCODEC_MAX_VERSION_MINOR = 49;
+ 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);
+
+(* Check if linked version is supported *)
+{$IF (LIBAVCODEC_VERSION > LIBAVCODEC_MAX_VERSION)}
+ {$MESSAGE Warn 'Linked version of libavcodec may be unsupported!'}
+{$IFEND}
+
+const
+ AV_NOPTS_VALUE: int64 = $8000000000000000;
+ AV_TIME_BASE = 1000000;
+ AV_TIME_BASE_Q : TAVRational = (num:1; den:AV_TIME_BASE); (* added by CAT *)
+
+(**
+ * 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,
+ 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,
+
+ //* 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,
+
+ //* 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,
+
+ //* 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,
+
+ 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,
+
+ //* 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_MPEG2TS= $20000, {*< _FAKE_ codec to indicate a raw MPEG-2 TS
+ * stream (only used by libavformat) *}
+ __CODEC_ID_4BYTE = $FFFFF // ensure 4-byte enum
+ );
+
+{* CODEC_ID_MP3LAME is obsolete *}
+const
+ {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+ 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_NB
+ );
+
+{**
+ * currently unused, may be used if 24/32 bits samples ever supported */
+ * all in native endian
+ *}
+type
+ TSampleFormat = (
+ SAMPLE_FMT_NONE = -1,
+ SAMPLE_FMT_U8, ///< unsigned 8 bits
+ SAMPLE_FMT_S16, ///< signed 16 bits
+ SAMPLE_FMT_S24, ///< signed 24 bits
+ SAMPLE_FMT_S32, ///< signed 32 bits
+ SAMPLE_FMT_FLT ///< float
+ );
+
+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
+ );
+
+ 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: integer;
+ end_frame: integer;
+ qscale: integer; // if this is 0 then quality_factor will be used instead
+ quality_factor: single;
+ 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
+ CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization
+ 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.
+
+(* 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: integer;
+
+ (*** width and height in 1/16 pel
+ * - encoding: set by user.
+ * - decoding: set by libavcodec. *)
+ width: integer;
+ height: integer;
+
+ (*** 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;
+ FF_SP_TYPE = 6;
+
+ 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 integer;
+ (**
+ * 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: integer;
+ (**
+ * 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: integer;
+ (**
+ * 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: int64;
+ (**\
+ * picture number in bitstream order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ coded_picture_number: integer;
+ (**
+ * picture number in display order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ display_picture_number: integer;
+ (**
+ * 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: integer;
+ (**
+ * 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: integer;
+ (**
+ * is this picture used as reference
+ * - encoding: unused
+ * - decoding: Set by libavcodec. (before get_buffer() call)).
+ *)
+ reference: integer;
+ (**
+ * QP table
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ qscale_table: PShortint;
+ (**
+ * QP store stride
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ qstride: integer;
+ (**
+ * 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: PCardinal;
+ (**
+ * 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 uint64;
+ (**
+ * 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_: integer;
+ (**
+ * 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: integer;
+ (**
+ *
+ *)
+ qscale_type: integer;
+ (**
+ * The content of the picture is interlaced.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec. (default 0)
+ *)
+ interlaced_frame: integer;
+ (**
+ * If the content is interlaced, is top field displayed first.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ top_field_first: integer;
+ (**
+ * 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: integer;
+ (**
+ * codec suggestion on buffer type if != 0
+ * - encoding: unused
+ * - decoding: Set by libavcodec. (before get_buffer() call)).
+ *)
+ buffer_hints: integer;
+ (**
+ * 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;
+ end;
+
+const
+ DEFAULT_FRAME_RATE_BASE = 1001000;
+
+ 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_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_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 distoration
+
+ 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: integer;
+
+ (* 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 cardinal;
+ end; {deprecated;}
+
+type
+ PAVClass = ^TAVClass;
+ PAVCodecContext = ^TAVCodecContext;
+
+ PAVCodec = ^TAVCodec;
+
+ // int[4]
+ PQuadIntArray = ^TQuadIntArray;
+ TQuadIntArray = array[0..3] of integer;
+ // int (*func)(struct AVCodecContext *c2, void *arg)
+ TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): integer; 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: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * CODEC_FLAG_*.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ flags: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * 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) [7, 8 are x264 specific, 9 is snow specific]
+ * - encoding: MUST be set by user.
+ * - decoding: unused
+ *)
+ me_method: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * the number of pictures in a group of pictures, or 0 for intra_only
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ gop_size: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * 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;
+ {const} src: PAVFrame; offset: PQuadIntArray;
+ y: integer; type_: integer; height: integer); cdecl;
+
+ (* audio only *)
+ sample_rate: integer; ///< samples per second
+ channels: integer;
+
+ (**
+ * 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: integer;
+ frame_number: integer; ///< audio or video frame number
+ real_pict_num: integer; ///< 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: integer;
+
+ (* - encoding parameters *)
+ qcompress: single; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
+ qblur: single; ///< amount of qscale smoothing over time (0.0-1.0)
+
+ (**
+ * minimum quantizer
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ qmin: integer;
+
+ (**
+ * maximum quantizer
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ qmax: integer;
+
+ (**
+ * maximum quantizer difference between frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_qdiff: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * qscale factor between IP and B-frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_quant_factor: single;
+
+ (** obsolete FIXME remove *)
+ rc_strategy: integer;
+
+ b_frame_strategy: integer;
+
+ (**
+ * 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: integer;
+
+ codec: PAVCodec;
+
+ priv_data: pointer;
+
+ {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+ (* unused, FIXME remove*)
+ rtp_mode: integer;
+ {$IFEND}
+
+ rtp_payload_size: integer; (* 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: integer; mb_nb: integer); cdecl;
+
+ (* statistics, used for 2-pass encoding *)
+ mv_bits: integer;
+ header_bits: integer;
+ i_tex_bits: integer;
+ p_tex_bits: integer;
+ i_count: integer;
+ p_count: integer;
+ skip_count: integer;
+ misc_bits: integer;
+
+ (**
+ * number of bits used for the previously encoded frame
+ * - encoding: Set by libavcodec.
+ * - decoding: unused
+ *)
+ frame_bits: integer;
+
+ (**
+ * 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: cardinal; // можно array [0..3] of char - тогда видно FOURCC
+
+ (**
+ * Work around bugs in encoders which sometimes cannot be detected automatically.
+ * - encoding: Set by user
+ * - decoding: Set by user
+ *)
+ workaround_bugs: integer;
+
+ (**
+ * luma single coefficient elimination threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ luma_elim_threshold: integer;
+
+ (**
+ * chroma single coeff elimination threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ chroma_elim_threshold: integer;
+
+ (**
+ * strictly follow the standard (MPEG4, ...).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ strict_std_compliance: integer;
+
+ (**
+ * qscale offset 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_offset: single;
+
+ (**
+ * Error resilience; higher values will detect more errors but may
+ * misdetect some more or less valid parts as errors.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ error_resilience: integer;
+
+ (**
+ * 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): integer; cdecl;
+
+ (**
+ * Called to release buffers which where 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: integer;
+
+ (**
+ * number of bytes per packet if constant and known or 0
+ * Used by some WAV based audio codecs.
+ *)
+ block_align: integer;
+
+ parse_only: integer; (* - 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: integer;
+
+ (**
+ * 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: single;
+
+ rc_qmod_amp: single;
+ rc_qmod_freq: integer;
+
+ (**
+ * ratecontrol override, see RcOverride
+ * - encoding: Allocated/set/freed by user.
+ * - decoding: unused
+ *)
+ rc_override: PRcOverride;
+ rc_override_count: integer;
+
+ (**
+ * rate control equation
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ rc_eq: pchar;
+
+ (**
+ * maximum bitrate
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_max_rate: integer;
+
+ (**
+ * minimum bitrate
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_min_rate: integer;
+
+ (**
+ * decoder bitstream buffer size
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_buffer_size: integer;
+ rc_buffer_aggressivity: single;
+
+ (**
+ * 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: single;
+
+ (**
+ * qscale offset between P and I-frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ i_quant_offset: single;
+
+ (**
+ * initial complexity for pass1 ratecontrol
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_initial_cplx: single;
+
+ (**
+ * DCT algorithm, see FF_DCT_* below
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dct_algo: integer;
+
+ (**
+ * luminance masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lumi_masking: single;
+
+ (**
+ * temporary complexity masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ temporal_cplx_masking: single;
+
+ (**
+ * spatial complexity masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ spatial_cplx_masking: single;
+
+ (**
+ * p block masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ p_masking: single;
+
+ (**
+ * darkness masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dark_masking: single;
+
+ {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+ (* for binary compatibility *)
+ unused: integer;
+ {$IFEND}
+
+ (**
+ * IDCT algorithm, see FF_IDCT_* below.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ idct_algo: integer;
+
+ (**
+ * slice count
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by user (or 0).
+ *)
+ slice_count: integer;
+
+ (**
+ * slice offsets in the frame in bytes
+ * - encoding: Set/allocated by libavcodec.
+ * - decoding: Set/allocated by user (or NULL).
+ *)
+ slice_offset: Pinteger;
+
+ (**
+ * error concealment flags
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ error_concealment: integer;
+
+ (**
+ * 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: cardinal;
+
+ (**
+ * bits per sample/pixel from the demuxer (needed for huffyuv).
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by user.
+ *)
+ bits_per_sample: integer;
+
+ (**
+ * prediction method (needed for huffyuv)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ prediction_method: integer;
+
+ (**
+ * sample aspect ratio (0 if unknown)
+ * 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: integer;
+
+ (**
+ * debug
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ debug_mv: integer;
+
+ (**
+ * error
+ * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
+ * - decoding: unused
+ *)
+ error: array [0..3] of uint64;
+
+ (**
+ * minimum MB quantizer
+ * - encoding: unused
+ * - decoding: unused
+ *)
+ mb_qmin: integer;
+
+ (**
+ * maximum MB quantizer
+ * - encoding: unused
+ * - decoding: unused
+ *)
+ mb_qmax: integer;
+
+ (**
+ * motion estimation comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_cmp: integer;
+
+ (**
+ * subpixel motion estimation comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_sub_cmp: integer;
+ (**
+ * macroblock comparison function (not supported yet)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_cmp: integer;
+ (**
+ * interlaced DCT comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ ildct_cmp: integer;
+
+ (**
+ * ME diamond size & shape
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dia_size: integer;
+
+ (**
+ * amount of previous MV predictors (2a+1 x 2a+1 square)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ last_predictor_count: integer;
+
+ (**
+ * prepass for motion estimation
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ pre_me: integer;
+
+ (**
+ * motion estimation prepass comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_pre_cmp: integer;
+
+ (**
+ * ME prepass diamond size & shape
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ pre_dia_size: integer;
+
+ (**
+ * subpel ME quality
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_subpel_quality: integer;
+
+ (**
+ * 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; {const} fmt: 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: integer;
+
+ (**
+ * maximum motion estimation search range in subpel units
+ * If 0 then no limit.
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_range: integer;
+
+ (**
+ * intra quantizer bias
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ intra_quant_bias: integer;
+
+ (**
+ * inter quantizer bias
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ inter_quant_bias: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * internal_buffer count
+ * Don't touch, used by libavcodec default_get_buffer().
+ *)
+ internal_buffer_count: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * coder type
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ coder_type: integer;
+
+ (**
+ * context model
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ context_model: integer;
+
+ {
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ realloc: function (s: PAVCodecContext; buf: Pbyte; buf_size: integer): Pbyte; cdecl;
+ }
+
+ (**
+ * slice flags
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ slice_flags: integer;
+
+ (**
+ * XVideo Motion Acceleration
+ * - encoding: forbidden
+ * - decoding: set by decoder
+ *)
+ xvmc_acceleration: integer;
+
+ (**
+ * macroblock decision mode
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_decision: integer;
+
+ (**
+ * 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; //cardinal;
+
+ (**
+ * scene change detection threshold
+ * 0 is default, larger means fewer detected scene changes.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ scenechange_threshold: integer;
+
+ (**
+ * minimum Lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lmin: integer;
+
+ (**
+ * maximum Lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lmax: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * 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): integer; 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: integer;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ inter_threshold: integer;
+
+ (**
+ * CODEC_FLAG2_*
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ flags2: integer;
+
+ (**
+ * Simulates errors in the bitstream to test error concealment.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ error_rate: integer;
+
+ (**
+ * MP3 antialias algorithm, see FF_AA_* below.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ antialias_algo: integer;
+
+ (**
+ * quantizer noise shaping
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ quantizer_noise_shaping: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * 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: PInteger; count: integer): integer; 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: integer;
+
+ (**
+ * Macroblock threshold below which the user specified macroblock types will be used.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_threshold: integer;
+
+ (**
+ * precision of the intra DC coefficient - 8
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ intra_dc_precision: integer;
+
+ (**
+ * noise vs. sse weight for the nsse comparsion function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ nsse_weight: integer;
+
+ (**
+ * Number of macroblock rows at the top which are skipped.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_top: integer;
+
+ (**
+ * Number of macroblock rows at the bottom which are skipped.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_bottom: integer;
+
+ (**
+ * profile
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ profile: integer;
+
+ (**
+ * level
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ level: integer;
+
+ (**
+ * low resolution decoding, 1-> 1/2 size, 2->1/4 size
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ lowres: integer;
+
+ (**
+ * 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: integer;
+
+ (**
+ * frame skip threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_threshold: integer;
+
+ (**
+ * frame skip factor
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_factor: integer;
+
+ (**
+ * frame skip exponent
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_exp: integer;
+
+ (**
+ * frame skip comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_cmp: integer;
+
+ (**
+ * Border processing masking, raises the quantizer for mbs on the borders
+ * of the picture.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ border_masking: single;
+
+ (**
+ * minimum MB lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_lmin: integer;
+
+ (**
+ * maximum MB lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_lmax: integer;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_penalty_compensation: integer;
+
+ (**
+ *
+ * - 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: integer;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ brd_scale: integer;
+
+ (**
+ * constant rate factor - quality-based VBR - values ~correspond to qps
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ {$IF LIBAVCODEC_VERSION >= 51021000} // 51.21.0
+ crf: single;
+ {$ELSE}
+ crf: integer;
+ {$IFEND}
+
+ (**
+ * constant quantization parameter rate control method
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ cqp: integer;
+
+ (**
+ * minimum GOP size
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ keyint_min: integer;
+
+ (**
+ * number of reference frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ refs: integer;
+
+ (**
+ * chroma qp offset from luma
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ chromaoffset: integer;
+
+ (**
+ * Influences how often B-frames are used.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ bframebias: integer;
+
+ (**
+ * trellis RD quantization
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ trellis: integer;
+
+ (**
+ * Reduce fluctuations in qp (before curve compression).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ complexityblur: single;
+
+ (**
+ * in-loop deblocking filter alphac0 parameter
+ * alpha is in the range -6...6
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ deblockalpha: integer;
+
+ (**
+ * in-loop deblocking filter beta parameter
+ * beta is in the range -6...6
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ deblockbeta: integer;
+
+ (**
+ * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ partitions: integer;
+
+ (**
+ * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ directpred: integer;
+
+ (**
+ * Audio cutoff bandwidth (0 means "automatic")
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ cutoff: integer;
+
+ (**
+ * Multiplied by qscale for each frame and added to scene_change_score.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ scenechange_factor: integer;
+
+ (**
+ *
+ * Note: Value depends upon the compare function used for fullpel ME.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mv0_threshold: integer;
+
+ (**
+ * Adjusts sensitivity of b_frame_strategy 1.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_sensitivity: integer;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ compression_level: integer;
+
+ (**
+ * Sets whether to use LPC mode - used by FLAC encoder.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ use_lpc: integer;
+
+ (**
+ * LPC coefficient precision - used by FLAC encoder
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lpc_coeff_precision: integer;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ min_prediction_order: integer;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_prediction_order: integer;
+
+ (**
+ * search method for selecting prediction order
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ prediction_order_method: integer;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ min_partition_order: integer;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_partition_order: integer;
+
+ {$IF LIBAVCODEC_VERSION >= 51026000} // 51.26.0
+ (**
+ * GOP timecode frame start number, in non drop frame format
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ timecode_frame_start: int64;
+ {$IFEND}
+
+ {$IF LIBAVCODEC_VERSION >= 51042000} // 51.42.0
+ (**
+ * Decoder should decode to this many channels if it can (0 for default)
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ request_channels: integer;
+ {$IFEND}
+
+ {$IF LIBAVCODEC_VERSION > 51049000} // > 51.49.0
+ (**
+ * Percentage of dynamic range compression to be applied by the decoder.
+ * The default value is 1.0, corresponding to full compression.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ drc_scale: Single;
+ {$IFEND}
+ end;
+
+(**
+ * AVCodec.
+ *)
+ TAVCodec = record
+ name: pchar;
+ type_: TCodecType;
+ id: TCodecID;
+ priv_data_size: integer;
+ init: function (avctx: PAVCodecContext): integer; cdecl; (* typo corretion by the Creative CAT *)
+ encode: function (avctx: PAVCodecContext; buf: pchar; buf_size: integer; data: pointer): integer; cdecl;
+ close: function (avctx: PAVCodecContext): integer; cdecl;
+ decode: function (avctx: PAVCodecContext; outdata: pointer; outdata_size: PInteger;
+ buf: pchar; buf_size: integer): integer; cdecl;
+ capabilities: integer;
+ next: PAVCodec;
+ flush: procedure (avctx: PAVCodecContext); cdecl;
+ {const} supported_framerates: PAVRational; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
+ {const} pix_fmts: PAVPixelFormat; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
+ 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 integer; ///< number of bytes per line
+ end;
+
+type
+ PAVSubtitleRect = ^TAVSubtitleRect;
+ TAVSubtitleRect = record
+ x: word;
+ y: word;
+ w: word;
+ h: word;
+ nb_colors: word;
+ linesize: integer;
+ rgba_palette: PCardinal;
+ bitmap: pchar;
+ end;
+
+ PAVSubtitle = ^TAVSubtitle;
+ TAVSubtitle = record {20}
+ format: word; (* 0 = graphics *)
+ start_display_time: cardinal; (* relative to packet pts, in ms *)
+ end_display_time: cardinal; (* relative to packet pts, in ms *)
+ num_rects: cardinal;
+ rects: PAVSubtitleRect;
+ end;
+
+
+(* resample.c *)
+
+ PReSampleContext = pointer;
+ PAVResampleContext = pointer;
+ PImgReSampleContext = pointer;
+
+function audio_resample_init (output_channels: integer; input_channels: integer;
+ output_rate: integer; input_rate: integer): PReSampleContext;
+ cdecl; external av__codec;
+
+function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: integer): integer;
+ cdecl; external av__codec;
+
+procedure audio_resample_close (s: PReSampleContext);
+ cdecl; external av__codec;
+
+
+function av_resample_init (out_rate: integer; in_rate: integer; filter_length: integer;
+ log2_phase_count: integer; linear: integer; cutoff: double): PAVResampleContext;
+ cdecl; external av__codec;
+
+function av_resample (c: PAVResampleContext; dst: PSmallint; src: PSmallint; consumed: PInteger;
+ src_size: integer; dst_size: integer; update_ctx: integer): integer;
+ cdecl; external av__codec;
+
+procedure av_resample_compensate (c: PAVResampleContext; sample_delta: integer;
+ compensation_distance: integer);
+ cdecl; external av__codec;
+
+procedure av_resample_close (c: PAVResampleContext);
+ cdecl; external av__codec;
+
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+(* YUV420 format is assumed ! *)
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_resample_init (output_width: integer; output_height: integer;
+ input_width: integer; input_height: integer): PImgReSampleContext;
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_resample_full_init (owidth: integer; oheight: integer;
+ iwidth: integer; iheight: integer;
+ topBand: integer; bottomBand: integer;
+ leftBand: integer; rightBand: integer;
+ padtop: integer; padbottom: integer;
+ padleft: integer; padright: integer): PImgReSampleContext;
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+procedure img_resample (s: PImgReSampleContext; output: PAVPicture; {const} input: PAVPicture);
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+procedure img_resample_close (s: PImgReSampleContext);
+ cdecl; external av__codec; deprecated;
+
+{$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: integer; height: integer): integer;
+ 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: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+function avpicture_layout ({const} src: PAVPicture; pix_fmt: TAVPixelFormat;
+ width: integer; height: integer;
+ dest: pchar; dest_size: integer): integer;
+ 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: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; h_shift: Pinteger; v_shift: pinteger);
+ 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: integer; height: integer);
+ cdecl; external av__codec;
+
+function avcodec_get_pix_fmt(const name: pchar): TAVPixelFormat;
+ cdecl; external av__codec;
+
+function avcodec_pix_fmt_to_codec_tag(p: TAVPixelFormat): cardinal;
+ 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: integer): integer;
+ 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.
+ *)
+function avcodec_find_best_pix_fmt (pix_fmt_mask: integer; src_pix_fmt: TAVPixelFormat;
+ has_alpha: integer; loss_ptr: pinteger): integer;
+ cdecl; external av__codec;
+
+{$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: integer; pix_fmt: integer);
+ cdecl; external av__codec;
+{$IFEND}
+
+const
+ FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *}
+ FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *}
+
+(**
+ * Tell if an image really has transparent alpha values.
+ * @return ored mask of FF_ALPHA_xxx constants
+ *)
+function img_get_alpha_info ({const} src: PAVPicture;
+ pix_fmt: TAVPixelFormat;
+ width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+{$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;
+ const src: PAVPicture; pix_fmt: TAVPixelFormat;
+ width: integer; height: integer): integer;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(* deinterlace a picture *)
+(* deinterlace - if not supported return -1 *)
+function avpicture_deinterlace (dst: PAVPicture; const src: PAVPicture;
+ pix_fmt: TAVPixelFormat; width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+{* external high level API *}
+
+{$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;
+{$IFEND}
+
+(* returns LIBAVCODEC_VERSION_INT constant *)
+function avcodec_version (): cardinal;
+ cdecl; external av__codec;
+
+(* returns LIBAVCODEC_BUILD constant *)
+function avcodec_build (): cardinal;
+ cdecl; external av__codec;
+
+(**
+ * Initializes libavcodec.
+ *
+ * @warning This function \e must be called before any other libavcodec
+ * function.
+ *)
+procedure avcodec_init ();
+ cdecl; external av__codec;
+
+procedure register_avcodec (format: PAVCodec);
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered encoder with a matching codec ID.
+ *
+ * @param id CodecID of the requested encoder
+ * @return An encoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_encoder (id: TCodecID): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered encoder with the specified name.
+ *
+ * @param name name of the requested encoder
+ * @return An encoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_encoder_by_name (name: pchar): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered decoder with a matching codec ID.
+ *
+ * @param id CodecID of the requested decoder
+ * @return A decoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_decoder(id: TCodecID): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Finds a registered decoder with the specified name.
+ *
+ * @param name name of the requested decoder
+ * @return A decoder if one was found, NULL otherwise.
+ *)
+function avcodec_find_decoder_by_name (name: pchar): PAVCodec;
+ cdecl; external av__codec;
+procedure avcodec_string(buf: pchar; buf_size: integer; enc: PAVCodecContext; encode: integer);
+ cdecl; external av__codec;
+
+(**
+ * Sets the fields of the given AVCodecContext to default values.
+ *
+ * @param s The AVCodecContext of which the fields should be set to default values.
+ *)
+procedure avcodec_get_context_defaults (s: PAVCodecContext);
+ cdecl; external av__codec;
+
+{$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): integer;
+ 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): integer;
+ cdecl; external av__codec;
+procedure avcodec_align_dimensions(s: PAVCodecContext; width: Pinteger; height: PInteger);
+ 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: cardinal; h: cardinal): integer;
+ cdecl; external av__codec;
+function avcodec_default_get_format(s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat;
+ cdecl; external av__codec;
+
+function avcodec_thread_init (s: PAVCodecContext; thread_count: integer): integer;
+ cdecl; external av__codec;
+procedure avcodec_thread_free (s: PAVCodecContext);
+ cdecl; external av__codec;
+function avcodec_thread_execute (s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: Pinteger; count: integer): integer;
+ cdecl; external av__codec;
+function avcodec_default_execute (s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: Pinteger; count: integer): integer;
+ 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): integer;
+ cdecl; external av__codec;
+
+(**
+ * @deprecated Use avcodec_decode_audio2() instead.
+ *)
+function avcodec_decode_audio (avctx: PAVCodecContext; samples: Pword;
+ var frame_size_ptr: integer;
+ buf: pchar; buf_size: integer): integer;
+ cdecl; external av__codec;
+
+{$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 : integer;
+ buf: pchar; buf_size: integer): integer;
+ 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: integer;
+ buf: PByte; buf_size: integer): integer;
+ 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: integer;
+ {const} buf: pchar; buf_size: integer): integer;
+ cdecl; external av__codec;
+function avcodec_parse_frame (avctx: PAVCodecContext; pdata: PPointer;
+ data_size_ptr: pinteger;
+ buf: pchar; buf_size: integer): integer;
+ 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.
+ * @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: integer; {const} samples: PWord): integer;
+ 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: integer; pict: PAVFrame): integer;
+ cdecl; external av__codec;
+function avcodec_encode_subtitle (avctx: PAVCodecContext; buf: pchar;
+ buf_size: integer; {const} sub: PAVSubtitle): integer;
+ cdecl; external av__codec;
+
+function avcodec_close (avctx: PAVCodecContext): integer;
+ 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: integer): 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): integer;
+ 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): integer;
+ cdecl; external av__codec;
+{$IFEND}
+
+const
+ AV_PARSER_PTS_NB = 4;
+ PARSER_FLAG_COMPLETE_FRAMES = $0001;
+
+type
+ {* frame parsing *}
+ PAVCodecParserContext = ^TAVCodecParserContext;
+ PAVCodecParser = ^TAVCodecParser;
+
+ TAVCodecParserContext = record
+ priv_data: pointer;
+ parser: PAVCodecParser;
+ frame_offset: int64; (* offset of the current frame *)
+ cur_offset: int64; (* current offset (incremented by each av_parser_parse()) *)
+ last_frame_offset: int64; (* offset of the last frame *)
+ (* video info *)
+ pict_type: integer; (* XXX: put it back in AVCodecContext *)
+ repeat_pict: integer; (* XXX: put it back in AVCodecContext *)
+ pts: int64; (* pts of the current frame *)
+ dts: int64; (* dts of the current frame *)
+
+ (* private data *)
+ last_pts: int64;
+ last_dts: int64;
+ fetch_timestamp: integer;
+
+ cur_frame_start_index: integer;
+ cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of int64;
+ cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of int64;
+ cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of int64;
+
+ flags: integer;
+
+ {$IF LIBAVCODEC_VERSION >= 51040003} // 51.40.3
+ offset: int64; ///< byte offset from starting packet start
+ last_offset: int64;
+ {$IFEND}
+ end;
+
+ TAVCodecParser = record
+ codec_ids: array [0..4] of integer; (* several codec IDs are permitted *)
+ priv_data_size: integer;
+ parser_init: function (s: PAVCodecParserContext): integer; cdecl;
+ parser_parse: function (s: PAVCodecParserContext; avctx: PAVCodecContext;
+ {const} poutbuf: PPointer; poutbuf_size: PInteger;
+ {const} buf: pchar; buf_size: integer): integer; cdecl;
+ parser_close: procedure (s: PAVCodecParserContext); cdecl;
+ split: function (avctx: PAVCodecContext; {const} buf: pchar;
+ buf_size: integer): integer; cdecl;
+ next: PAVCodecParser;
+ end;
+
+
+{$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;
+{$IFEND}
+
+procedure av_register_codec_parser (parser: PAVCodecParser);
+ cdecl; external av__codec;
+
+function av_parser_init (codec_id: integer): PAVCodecParserContext;
+ cdecl; external av__codec;
+
+function av_parser_parse (s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: pinteger;
+ const buf: pchar; buf_size: integer;
+ pts: int64; dts: int64): integer;
+ cdecl; external av__codec;
+function av_parser_change (s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: PInteger;
+ const buf: pchar; buf_size: integer; keyframe: integer): integer;
+ cdecl; external av__codec;
+procedure av_parser_close (s: PAVCodecParserContext);
+ cdecl; external av__codec;
+
+type
+ PAVBitStreamFilterContext = ^TAVBitStreamFilterContext;
+ PAVBitStreamFilter = ^TAVBitStreamFilter;
+
+ TAVBitStreamFilterContext = record
+ priv_data: pointer;
+ filter: PAVBitStreamFilter;
+ parser: PAVCodecParserContext;
+ next: PAVBitStreamFilterContext;
+ end;
+
+ TAVBitStreamFilter = record
+ name: pchar;
+ priv_data_size: integer;
+ filter: function (bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: pchar;
+ poutbuf: PPointer; poutbuf_size: PInteger;
+ buf: PByte; buf_size: integer; keyframe: integer): integer; cdecl;
+ {$IF LIBAVCODEC_VERSION >= 51043000} // 51.43.0
+ close: procedure (bsfc: PAVBitStreamFilterContext);
+ {$IFEND}
+ next: PAVBitStreamFilter;
+ end;
+
+procedure av_register_bitstream_filter (bsf: PAVBitStreamFilter);
+ cdecl; external av__codec;
+
+function av_bitstream_filter_init (name: pchar): PAVBitStreamFilterContext;
+ cdecl; external av__codec;
+
+function av_bitstream_filter_filter (bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: pchar;
+ poutbuf: PPointer; poutbuf_size: PInteger;
+ buf: PByte; buf_size: integer; keyframe: integer): integer;
+ cdecl; external av__codec;
+procedure av_bitstream_filter_close (bsf: PAVBitStreamFilterContext);
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0
+function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter;
+ cdecl; external av__codec;
+{$IFEND}
+
+(* memory *)
+
+(**
+ * Reallocates the given block if it is not large enough, otherwise it
+ * does nothing.
+ *
+ * @see av_realloc
+ *)
+procedure av_fast_realloc (ptr: pointer; size: PCardinal; min_size: Cardinal);
+ cdecl; external av__codec;
+
+(* for static data only *)
+
+(**
+ * Frees all static arrays and resets their pointers to 0.
+ * Call this function to release all statically allocated tables.
+ *
+ * @deprecated. Code which uses av_free_static is broken/misdesigned
+ * and should correctly use static arrays
+ *
+ *)
+procedure av_free_static ();
+ cdecl; external av__codec; deprecated;
+
+(**
+ * Allocation of static arrays.
+ *
+ * @warning Do not use for normal allocation.
+ *
+ * @param[in] size The amount of memory you need in bytes.
+ * @return block of memory of the requested size
+ * @deprecated. Code which uses av_mallocz_static is broken/misdesigned
+ * and should correctly use static arrays
+ *)
+procedure av_mallocz_static(size: cardinal);
+ cdecl; external av__codec; deprecated;
+
+{$IF LIBAVCODEC_VERSION < 51035000} // 51.35.0
+procedure av_realloc_static(ptr: pointer; size: Cardinal);
+ cdecl; external av__codec;
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0
+(**
+ * Copy image 'src' to 'dst'.
+ *)
+procedure av_picture_copy(dst: PAVPicture; {const} src: PAVPicture;
+ pix_fmt: integer; width: integer; height: integer);
+ cdecl; external av__codec;
+
+(**
+ * Crop image top and left side.
+ *)
+function av_picture_crop(dst: PAVPicture; {const} src: PAVPicture;
+ pix_fmt: integer; top_band: integer; left_band: integer): integer;
+ cdecl; external av__codec;
+
+(**
+ * Pad image.
+ *)
+function av_picture_pad(dst: PAVPicture; {const} src: PAVPicture; height: integer; width: integer; pix_fmt: integer;
+ padtop: integer; padbottom: integer; padleft: integer; padright: integer; color: PInteger): integer;
+ cdecl; external av__codec;
+{$IFEND}
+
+{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+procedure img_copy (dst: PAVPicture; const src: PAVPicture;
+ pix_fmt: TAVPixelFormat; width: integer; height: integer);
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_crop (dst: PAVPicture; const src: PAVPicture;
+ pix_fmt: TAVPixelFormat; top_band, left_band: integer): integer;
+ cdecl; external av__codec; deprecated;
+
+(**
+ * @deprecated Use the software scaler (swscale) instead.
+ *)
+function img_pad (dst: PAVPicture; const src: PAVPicture; height, width: integer;
+ pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: integer;
+ color: PInteger): integer;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+function av_xiphlacing(s: PByte; v: Cardinal): Cardinal;
+ cdecl; external av__codec;
+
+{$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: PInteger; height_ptr: PInteger; {const} str: PChar): integer;
+ 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; {const} str: PChar): integer;
+ cdecl; external av__codec;
+{$IFEND}
+
+(*
+{* error handling *}
+#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(EINVAL) {**< unknown error *}
+ AVERROR_IO AVERROR(EIO) {**< I/O error *}
+ AVERROR_NUMEXPECTED AVERROR(EDOM) {**< Number syntax expected in filename. *}
+ AVERROR_INVALIDDATA AVERROR(EINVAL) {**< invalid data found *}
+ AVERROR_NOMEM AVERROR(ENOMEM) {**< not enough memory *}
+ AVERROR_NOFMT AVERROR(EILSEQ) {**< unknown format *}
+ AVERROR_NOTSUPP AVERROR(ENOSYS) {**< Operation not supported. *}
+ AVERROR_NOENT AVERROR(ENOENT) {**< No such file or directory. *}
+ AVERROR_PATCHWELCOME -MKTAG('P','A','W','E') {**< Not yet implemented in FFmpeg. Patches welcome. *}
+*)
+
+const
+ AVERROR_UNKNOWN =(-1); (* unknown error *)
+ AVERROR_IO =(-2); (* i/o error *)
+ AVERROR_NUMEXPECTED =(-3); (* number syntax expected in filename *)
+ AVERROR_INVALIDDATA =(-4); (* invalid data found *)
+ AVERROR_NOMEM =(-5); (* not enough memory *)
+ AVERROR_NOFMT =(-6); (* unknown format *)
+ AVERROR_NOTSUPP =(-7); (* operation not supported *)
+
+implementation
+
+end.
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