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authork-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2012-04-21 22:15:30 +0000
committerk-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2012-04-21 22:15:30 +0000
commitd3c88fdf185156ffac63765861bc1ff368b97154 (patch)
treefb49dfb2a89bcf642575ddb39329f87411e59161 /src/lib/ffmpeg-0.10/avcodec.pas
parent17eb33f81ace1fc1f77c07e2d07125445a1f83ab (diff)
downloadusdx-d3c88fdf185156ffac63765861bc1ff368b97154.tar.gz
usdx-d3c88fdf185156ffac63765861bc1ff368b97154.tar.xz
usdx-d3c88fdf185156ffac63765861bc1ff368b97154.zip
Initial commit for ffmpeg-0.10. This is far from complete.
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@2859 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'src/lib/ffmpeg-0.10/avcodec.pas')
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diff --git a/src/lib/ffmpeg-0.10/avcodec.pas b/src/lib/ffmpeg-0.10/avcodec.pas
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+(*
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * This is a part of Pascal porting of ffmpeg.
+ * - Originally by Victor Zinetz for Delphi and Free Pascal on Windows.
+ * - For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT
+ * in the source codes.
+ * - Changes and updates by the UltraStar Deluxe Team
+ *
+ * Conversion of libavcodec/avcodec.h
+ * version: 52.122.0
+ *
+ *)
+
+unit avcodec;
+
+{$IFDEF FPC}
+ {$MODE DELPHI }
+ {$PACKENUM 4} (* use 4-byte enums *)
+ {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+ {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$IFDEF DARWIN}
+ {$linklib libavcodec}
+{$ENDIF}
+
+interface
+
+uses
+ ctypes,
+ avutil,
+ rational,
+ SysUtils,
+ {$IFDEF UNIX}
+ BaseUnix,
+ {$ENDIF}
+ UConfig;
+
+const
+ (*
+ * IMPORTANT: The official FFmpeg C headers change very quickly. Often some
+ * of the data structures are changed so that they become incompatible with
+ * older header files. The Pascal headers have to be adjusted to those changes,
+ * otherwise the application might crash randomly or strange bugs (not
+ * necessarily related to video or audio due to buffer overflows etc.) might
+ * occur.
+ *
+ * In the past users reported problems with USDX that took hours to fix and
+ * the problem was an unsupported version of FFmpeg. So we decided to disable
+ * support for future versions of FFmpeg until the headers are revised by us
+ * for that version as they otherwise most probably will break USDX.
+ *
+ * If the headers do not yet support your FFmpeg version you may want to
+ * adjust the max. version numbers manually but please note: it may work but
+ * in many cases it does not. The USDX team does NOT PROVIDE ANY SUPPORT
+ * for the game if the MAX. VERSION WAS CHANGED.
+ *
+ * The only safe way to support new versions of FFmpeg is to add the changes
+ * of the FFmpeg git repository C headers to the Pascal headers.
+ * You can accelerate this process by posting a patch with the git changes
+ * translated to Pascal to our bug tracker (please join our IRC chat before
+ * you start working on it). Simply adjusting the max. versions is NOT a valid
+ * fix.
+ *)
+ (* Supported version by this header *)
+ LIBAVCODEC_MAX_VERSION_MAJOR = 52;
+ LIBAVCODEC_MAX_VERSION_MINOR = 122;
+ LIBAVCODEC_MAX_VERSION_RELEASE = 0;
+ LIBAVCODEC_MAX_VERSION = (LIBAVCODEC_MAX_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVCODEC_MAX_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVCODEC_MAX_VERSION_RELEASE * VERSION_RELEASE);
+
+ (* Min. supported version by this header *)
+ LIBAVCODEC_MIN_VERSION_MAJOR = 52;
+ LIBAVCODEC_MIN_VERSION_MINOR = 122;
+ LIBAVCODEC_MIN_VERSION_RELEASE = 0;
+ LIBAVCODEC_MIN_VERSION = (LIBAVCODEC_MIN_VERSION_MAJOR * VERSION_MAJOR) +
+ (LIBAVCODEC_MIN_VERSION_MINOR * VERSION_MINOR) +
+ (LIBAVCODEC_MIN_VERSION_RELEASE * VERSION_RELEASE);
+
+(* Check if linked versions are supported *)
+{$IF (LIBAVCODEC_VERSION < LIBAVCODEC_MIN_VERSION)}
+// {$MESSAGE Error 'Linked version of libavcodec is too old!'}
+{$IFEND}
+
+(* Check if linked version is supported *)
+{$IF (LIBAVCODEC_VERSION > LIBAVCODEC_MAX_VERSION)}
+// {$MESSAGE Error 'Linked version of libavcodec is not yet supported!'}
+{$IFEND}
+
+(**
+ * Those FF_API_* defines are not part of public API.
+ * They may change, break or disappear at any time.
+ *)
+const
+{$ifndef FF_API_PALETTE_CONTROL}
+ FF_API_PALETTE_CONTROL = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_MM_FLAGS}
+ FF_API_MM_FLAGS = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_OPT_SHOW}
+ FF_API_OPT_SHOW = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_AUDIO_OLD}
+ FF_API_AUDIO_OLD = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_VIDEO_OLD}
+ FF_API_VIDEO_OLD = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_SUBTITLE_OLD}
+ FF_API_SUBTITLE_OLD = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_USE_LPC}
+ FF_API_USE_LPC = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_SET_STRING_OLD}
+ FF_API_SET_STRING_OLD = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_INOFFICIAL}
+ FF_API_INOFFICIAL = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_OLD_SAMPLE_FMT}
+ FF_API_OLD_SAMPLE_FMT = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_OLD_AUDIOCONVERT}
+ FF_API_OLD_AUDIOCONVERT = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_HURRY_UP}
+ FF_API_HURRY_UP = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_RATE_EMU}
+ FF_API_RATE_EMU = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_MB_Q}
+ FF_API_MB_Q = LIBAVCODEC_VERSION_MAJOR < 53;
+{$endif}
+{$ifndef FF_API_ANTIALIAS_ALGO}
+ FF_API_ANTIALIAS_ALGO = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_REQUEST_CHANNELS}
+ FF_API_REQUEST_CHANNELS = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_OPT_H}
+ FF_API_OPT_H = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_THREAD_INIT}
+ FF_API_THREAD_INIT = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_OLD_FF_PICT_TYPES}
+ FF_API_OLD_FF_PICT_TYPES = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_FLAC_GLOBAL_OPTS}
+ FF_API_FLAC_GLOBAL_OPTS = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+{$ifndef FF_API_GET_PIX_FMT_NAME}
+ FF_API_GET_PIX_FMT_NAME = LIBAVCODEC_VERSION_MAJOR < 54;
+{$endif}
+
+type
+ FF_INTERNALC_MEM_TYPE = cuint;
+
+const
+ AV_NOPTS_VALUE: cint64 = $8000000000000000;
+ AV_TIME_BASE = 1000000;
+ AV_TIME_BASE_Q: TAVRational = (num: 1; den: AV_TIME_BASE);
+
+(**
+ * Identify the syntax and semantics of the bitstream.
+ * The principle is roughly:
+ * Two decoders with the same ID can decode the same streams.
+ * Two encoders with the same ID can encode compatible streams.
+ * There may be slight deviations from the principle due to implementation
+ * details.
+ *
+ * If you add a codec ID to this list, add it so that
+ * 1. no value of a existing codec ID changes (that would break ABI),
+ * 2. it is as close as possible to similar codecs.
+ *)
+type
+ TCodecID = (
+ CODEC_ID_NONE,
+
+ //* video codecs */
+ CODEC_ID_MPEG1VIDEO,
+ CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
+ CODEC_ID_MPEG2VIDEO_XVMC,
+ CODEC_ID_H261,
+ CODEC_ID_H263,
+ CODEC_ID_RV10,
+ CODEC_ID_RV20,
+ CODEC_ID_MJPEG,
+ CODEC_ID_MJPEGB,
+ CODEC_ID_LJPEG,
+ CODEC_ID_SP5X,
+ CODEC_ID_JPEGLS,
+ CODEC_ID_MPEG4,
+ CODEC_ID_RAWVIDEO,
+ CODEC_ID_MSMPEG4V1,
+ CODEC_ID_MSMPEG4V2,
+ CODEC_ID_MSMPEG4V3,
+ CODEC_ID_WMV1,
+ CODEC_ID_WMV2,
+ CODEC_ID_H263P,
+ CODEC_ID_H263I,
+ CODEC_ID_FLV1,
+ CODEC_ID_SVQ1,
+ CODEC_ID_SVQ3,
+ CODEC_ID_DVVIDEO,
+ CODEC_ID_HUFFYUV,
+ CODEC_ID_CYUV,
+ CODEC_ID_H264,
+ CODEC_ID_INDEO3,
+ CODEC_ID_VP3,
+ CODEC_ID_THEORA,
+ CODEC_ID_ASV1,
+ CODEC_ID_ASV2,
+ CODEC_ID_FFV1,
+ CODEC_ID_4XM,
+ CODEC_ID_VCR1,
+ CODEC_ID_CLJR,
+ CODEC_ID_MDEC,
+ CODEC_ID_ROQ,
+ CODEC_ID_INTERPLAY_VIDEO,
+ CODEC_ID_XAN_WC3,
+ CODEC_ID_XAN_WC4,
+ CODEC_ID_RPZA,
+ CODEC_ID_CINEPAK,
+ CODEC_ID_WS_VQA,
+ CODEC_ID_MSRLE,
+ CODEC_ID_MSVIDEO1,
+ CODEC_ID_IDCIN,
+ CODEC_ID_8BPS,
+ CODEC_ID_SMC,
+ CODEC_ID_FLIC,
+ CODEC_ID_TRUEMOTION1,
+ CODEC_ID_VMDVIDEO,
+ CODEC_ID_MSZH,
+ CODEC_ID_ZLIB,
+ CODEC_ID_QTRLE,
+ CODEC_ID_SNOW,
+ CODEC_ID_TSCC,
+ CODEC_ID_ULTI,
+ CODEC_ID_QDRAW,
+ CODEC_ID_VIXL,
+ CODEC_ID_QPEG,
+{$IF LIBAVCODEC_VERSION_MAJOR < 53}
+ CODEC_ID_XVID,
+{$IFEND}
+ CODEC_ID_PNG,
+ CODEC_ID_PPM,
+ CODEC_ID_PBM,
+ CODEC_ID_PGM,
+ CODEC_ID_PGMYUV,
+ CODEC_ID_PAM,
+ CODEC_ID_FFVHUFF,
+ CODEC_ID_RV30,
+ CODEC_ID_RV40,
+ CODEC_ID_VC1,
+ CODEC_ID_WMV3,
+ CODEC_ID_LOCO,
+ CODEC_ID_WNV1,
+ CODEC_ID_AASC,
+ CODEC_ID_INDEO2,
+ CODEC_ID_FRAPS,
+ CODEC_ID_TRUEMOTION2,
+ CODEC_ID_BMP,
+ CODEC_ID_CSCD,
+ CODEC_ID_MMVIDEO,
+ CODEC_ID_ZMBV,
+ CODEC_ID_AVS,
+ CODEC_ID_SMACKVIDEO,
+ CODEC_ID_NUV,
+ CODEC_ID_KMVC,
+ CODEC_ID_FLASHSV,
+ CODEC_ID_CAVS,
+ CODEC_ID_JPEG2000,
+ CODEC_ID_VMNC,
+ CODEC_ID_VP5,
+ CODEC_ID_VP6,
+ CODEC_ID_VP6F,
+ CODEC_ID_TARGA,
+ CODEC_ID_DSICINVIDEO,
+ CODEC_ID_TIERTEXSEQVIDEO,
+ CODEC_ID_TIFF,
+ CODEC_ID_GIF,
+ CODEC_ID_FFH264,
+ CODEC_ID_DXA,
+ CODEC_ID_DNXHD,
+ CODEC_ID_THP,
+ CODEC_ID_SGI,
+ CODEC_ID_C93,
+ CODEC_ID_BETHSOFTVID,
+ CODEC_ID_PTX,
+ CODEC_ID_TXD,
+ CODEC_ID_VP6A,
+ CODEC_ID_AMV,
+ CODEC_ID_VB,
+ CODEC_ID_PCX,
+ CODEC_ID_SUNRAST,
+ CODEC_ID_INDEO4,
+ CODEC_ID_INDEO5,
+ CODEC_ID_MIMIC,
+ CODEC_ID_RL2,
+ CODEC_ID_8SVX_EXP,
+ CODEC_ID_8SVX_FIB,
+ CODEC_ID_ESCAPE124,
+ CODEC_ID_DIRAC,
+ CODEC_ID_BFI,
+ CODEC_ID_CMV,
+ CODEC_ID_MOTIONPIXELS,
+ CODEC_ID_TGV,
+ CODEC_ID_TGQ,
+ CODEC_ID_TQI,
+ CODEC_ID_AURA,
+ CODEC_ID_AURA2,
+ CODEC_ID_V210X,
+ CODEC_ID_TMV,
+ CODEC_ID_V210,
+ CODEC_ID_DPX,
+ CODEC_ID_MAD,
+ CODEC_ID_FRWU,
+ CODEC_ID_FLASHSV2,
+ CODEC_ID_CDGRAPHICS,
+ CODEC_ID_R210,
+ CODEC_ID_ANM,
+ CODEC_ID_BINKVIDEO,
+ CODEC_ID_IFF_ILBM,
+ CODEC_ID_IFF_BYTERUN1,
+ CODEC_ID_KGV1,
+ CODEC_ID_YOP,
+ CODEC_ID_VP8,
+ CODEC_ID_PICTOR,
+ CODEC_ID_ANSI,
+ CODEC_ID_A64_MULTI,
+ CODEC_ID_A64_MULTI5,
+ CODEC_ID_R10K,
+ CODEC_ID_MXPEG,
+ CODEC_ID_LAGARITH,
+ CODEC_ID_PRORES,
+ CODEC_ID_JV,
+ CODEC_ID_DFA,
+ CODEC_ID_8SVX_RAW,
+
+ //* various PCM "codecs" */
+ CODEC_ID_PCM_S16LE= $10000,
+ CODEC_ID_PCM_S16BE,
+ CODEC_ID_PCM_U16LE,
+ CODEC_ID_PCM_U16BE,
+ CODEC_ID_PCM_S8,
+ CODEC_ID_PCM_U8,
+ CODEC_ID_PCM_MULAW,
+ CODEC_ID_PCM_ALAW,
+ CODEC_ID_PCM_S32LE,
+ CODEC_ID_PCM_S32BE,
+ CODEC_ID_PCM_U32LE,
+ CODEC_ID_PCM_U32BE,
+ CODEC_ID_PCM_S24LE,
+ CODEC_ID_PCM_S24BE,
+ CODEC_ID_PCM_U24LE,
+ CODEC_ID_PCM_U24BE,
+ CODEC_ID_PCM_S24DAUD,
+ CODEC_ID_PCM_ZORK,
+ CODEC_ID_PCM_S16LE_PLANAR,
+ CODEC_ID_PCM_DVD,
+ CODEC_ID_PCM_F32BE,
+ CODEC_ID_PCM_F32LE,
+ CODEC_ID_PCM_F64BE,
+ CODEC_ID_PCM_F64LE,
+ CODEC_ID_PCM_BLURAY,
+ CODEC_ID_PCM_LXF,
+ CODEC_ID_S302M,
+
+ //* various ADPCM codecs */
+ CODEC_ID_ADPCM_IMA_QT= $11000,
+ CODEC_ID_ADPCM_IMA_WAV,
+ CODEC_ID_ADPCM_IMA_DK3,
+ CODEC_ID_ADPCM_IMA_DK4,
+ CODEC_ID_ADPCM_IMA_WS,
+ CODEC_ID_ADPCM_IMA_SMJPEG,
+ CODEC_ID_ADPCM_MS,
+ CODEC_ID_ADPCM_4XM,
+ CODEC_ID_ADPCM_XA,
+ CODEC_ID_ADPCM_ADX,
+ CODEC_ID_ADPCM_EA,
+ CODEC_ID_ADPCM_G726,
+ CODEC_ID_ADPCM_CT,
+ CODEC_ID_ADPCM_SWF,
+ CODEC_ID_ADPCM_YAMAHA,
+ CODEC_ID_ADPCM_SBPRO_4,
+ CODEC_ID_ADPCM_SBPRO_3,
+ CODEC_ID_ADPCM_SBPRO_2,
+ CODEC_ID_ADPCM_THP,
+ CODEC_ID_ADPCM_IMA_AMV,
+ CODEC_ID_ADPCM_EA_R1,
+ CODEC_ID_ADPCM_EA_R3,
+ CODEC_ID_ADPCM_EA_R2,
+ CODEC_ID_ADPCM_IMA_EA_SEAD,
+ CODEC_ID_ADPCM_IMA_EA_EACS,
+ CODEC_ID_ADPCM_EA_XAS,
+ CODEC_ID_ADPCM_EA_MAXIS_XA,
+ CODEC_ID_ADPCM_IMA_ISS,
+ CODEC_ID_ADPCM_G722,
+
+ //* AMR */
+ CODEC_ID_AMR_NB= $12000,
+ CODEC_ID_AMR_WB,
+
+ //* RealAudio codecs*/
+ CODEC_ID_RA_144= $13000,
+ CODEC_ID_RA_288,
+
+ //* various DPCM codecs */
+ CODEC_ID_ROQ_DPCM= $14000,
+ CODEC_ID_INTERPLAY_DPCM,
+ CODEC_ID_XAN_DPCM,
+ CODEC_ID_SOL_DPCM,
+
+ //* audio codecs */
+ CODEC_ID_MP2= $15000,
+ CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3
+ CODEC_ID_AAC,
+ CODEC_ID_AC3,
+ CODEC_ID_DTS,
+ CODEC_ID_VORBIS,
+ CODEC_ID_DVAUDIO,
+ CODEC_ID_WMAV1,
+ CODEC_ID_WMAV2,
+ CODEC_ID_MACE3,
+ CODEC_ID_MACE6,
+ CODEC_ID_VMDAUDIO,
+ CODEC_ID_SONIC,
+ CODEC_ID_SONIC_LS,
+ CODEC_ID_FLAC,
+ CODEC_ID_MP3ADU,
+ CODEC_ID_MP3ON4,
+ CODEC_ID_SHORTEN,
+ CODEC_ID_ALAC,
+ CODEC_ID_WESTWOOD_SND1,
+ CODEC_ID_GSM, ///< as in Berlin toast format
+ CODEC_ID_QDM2,
+ CODEC_ID_COOK,
+ CODEC_ID_TRUESPEECH,
+ CODEC_ID_TTA,
+ CODEC_ID_SMACKAUDIO,
+ CODEC_ID_QCELP,
+ CODEC_ID_WAVPACK,
+ CODEC_ID_DSICINAUDIO,
+ CODEC_ID_IMC,
+ CODEC_ID_MUSEPACK7,
+ CODEC_ID_MLP,
+ CODEC_ID_GSM_MS, { as found in WAV }
+ CODEC_ID_ATRAC3,
+ CODEC_ID_VOXWARE,
+ CODEC_ID_APE,
+ CODEC_ID_NELLYMOSER,
+ CODEC_ID_MUSEPACK8,
+ CODEC_ID_SPEEX,
+ CODEC_ID_WMAVOICE,
+ CODEC_ID_WMAPRO,
+ CODEC_ID_WMALOSSLESS,
+ CODEC_ID_ATRAC3P,
+ CODEC_ID_EAC3,
+ CODEC_ID_SIPR,
+ CODEC_ID_MP1,
+ CODEC_ID_TWINVQ,
+ CODEC_ID_TRUEHD,
+ CODEC_ID_MP4ALS,
+ CODEC_ID_ATRAC1,
+ CODEC_ID_BINKAUDIO_RDFT,
+ CODEC_ID_BINKAUDIO_DCT,
+ CODEC_ID_AAC_LATM,
+ CODEC_ID_QDMC,
+ CODEC_ID_CELT,
+
+ //* subtitle codecs */
+ CODEC_ID_DVD_SUBTITLE= $17000,
+ CODEC_ID_DVB_SUBTITLE,
+ CODEC_ID_TEXT, ///< raw UTF-8 text
+ CODEC_ID_XSUB,
+ CODEC_ID_SSA,
+ CODEC_ID_MOV_TEXT,
+ CODEC_ID_HDMV_PGS_SUBTITLE,
+ CODEC_ID_DVB_TELETEXT,
+ CODEC_ID_SRT,
+ CODEC_ID_MICRODVD,
+
+ //* other specific kind of codecs (generally used for attachments) */
+ CODEC_ID_TTF= $18000,
+
+ CODEC_ID_PROBE= $19000, ///< codec_id is not known (like CODEC_ID_NONE) but lavf should attempt to identify it
+
+ CODEC_ID_MPEG2TS= $20000, (**< _FAKE_ codec to indicate a raw MPEG-2 TS
+ * stream (only used by libavformat) *)
+ CODEC_ID_FFMETADATA= $21000 ///< Dummy codec for streams containing only metadata information.
+ );
+
+type
+ TCodecType = TAVMediaType;
+
+const
+ CODEC_TYPE_UNKNOWN = AVMEDIA_TYPE_UNKNOWN;
+ CODEC_TYPE_VIDEO = AVMEDIA_TYPE_VIDEO;
+ CODEC_TYPE_AUDIO = AVMEDIA_TYPE_AUDIO;
+ CODEC_TYPE_DATA = AVMEDIA_TYPE_DATA;
+ CODEC_TYPE_SUBTITLE = AVMEDIA_TYPE_SUBTITLE;
+ CODEC_TYPE_ATTACHMENT = AVMEDIA_TYPE_ATTACHMENT;
+ CODEC_TYPE_NB = AVMEDIA_TYPE_NB;
+
+{$IF FF_API_OLD_AUDIOCONVERT}
+
+{$I libavcodec/audioconvert.pas}
+
+const
+ {* Audio channel masks *}
+ CH_FRONT_LEFT = AV_CH_FRONT_LEFT;
+ CH_FRONT_RIGHT = AV_CH_FRONT_RIGHT;
+ CH_FRONT_CENTER = AV_CH_FRONT_CENTER;
+ CH_LOW_FREQUENCY = AV_CH_LOW_FREQUENCY;
+ CH_BACK_LEFT = AV_CH_BACK_LEFT;
+ CH_BACK_RIGHT = AV_CH_BACK_RIGHT;
+ CH_FRONT_LEFT_OF_CENTER = AV_CH_FRONT_LEFT_OF_CENTER;
+ CH_FRONT_RIGHT_OF_CENTER = AV_CH_FRONT_RIGHT_OF_CENTER;
+ CH_BACK_CENTER = AV_CH_BACK_CENTER;
+ CH_SIDE_LEFT = AV_CH_SIDE_LEFT;
+ CH_SIDE_RIGHT = AV_CH_SIDE_RIGHT;
+ CH_TOP_CENTER = AV_CH_TOP_CENTER;
+ CH_TOP_FRONT_LEFT = AV_CH_TOP_FRONT_LEFT;
+ CH_TOP_FRONT_CENTER = AV_CH_TOP_FRONT_CENTER;
+ CH_TOP_FRONT_RIGHT = AV_CH_TOP_FRONT_RIGHT;
+ CH_TOP_BACK_LEFT = AV_CH_TOP_BACK_LEFT;
+ CH_TOP_BACK_CENTER = AV_CH_TOP_BACK_CENTER;
+ CH_TOP_BACK_RIGHT = AV_CH_TOP_BACK_RIGHT;
+ CH_STEREO_LEFT = AV_CH_STEREO_LEFT;
+ CH_STEREO_RIGHT = AV_CH_STEREO_RIGHT;
+
+{** Channel mask value used for AVCodecContext.request_channel_layout
+ * to indicate that the user requests the channel order of the decoder output
+ * to be the native codec channel order.
+ *}
+ CH_LAYOUT_NATIVE = AV_CH_LAYOUT_NATIVE;
+
+ {* Audio channel convenience macros *}
+ CH_LAYOUT_MONO = AV_CH_LAYOUT_MONO;
+ CH_LAYOUT_STEREO = AV_CH_LAYOUT_STEREO;
+ CH_LAYOUT_2_1 = AV_CH_LAYOUT_2_1;
+ CH_LAYOUT_SURROUND = AV_CH_LAYOUT_SURROUND;
+ CH_LAYOUT_4POINT0 = AV_CH_LAYOUT_4POINT0;
+ CH_LAYOUT_2_2 = AV_CH_LAYOUT_2_2;
+ CH_LAYOUT_QUAD = AV_CH_LAYOUT_QUAD;
+ CH_LAYOUT_5POINT0 = AV_CH_LAYOUT_5POINT0;
+ CH_LAYOUT_5POINT1 = AV_CH_LAYOUT_5POINT1;
+ CH_LAYOUT_5POINT0_BACK = AV_CH_LAYOUT_5POINT0_BACK;
+ CH_LAYOUT_5POINT1_BACK = AV_CH_LAYOUT_5POINT1_BACK;
+ CH_LAYOUT_7POINT0 = AV_CH_LAYOUT_7POINT0;
+ CH_LAYOUT_7POINT1 = AV_CH_LAYOUT_7POINT1;
+ CH_LAYOUT_7POINT1_WIDE = AV_CH_LAYOUT_7POINT1_WIDE;
+ CH_LAYOUT_STEREO_DOWNMIX = AV_CH_LAYOUT_STEREO_DOWNMIX;
+{$IFEND}
+
+{* in bytes *}
+ AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio
+
+{**
+ * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
+ * This is mainly needed because some optimized bitstream readers read
+ * 32 or 64 bit at once and could read over the end.<br>
+ * Note: If the first 23 bits of the additional bytes are not 0, then damaged
+ * MPEG bitstreams could cause overread and segfault.
+ *}
+ FF_INPUT_BUFFER_PADDING_SIZE = 8;
+
+{**
+ * minimum encoding buffer size.
+ * Used to avoid some checks during header writing.
+ *}
+ FF_MIN_BUFFER_SIZE = 16384;
+
+type
+{*
+ * motion estimation type.
+ *}
+ TMotion_Est_ID = (
+ ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed
+ ME_FULL,
+ ME_LOG,
+ ME_PHODS,
+ ME_EPZS, ///< enhanced predictive zonal search
+ ME_X1, ///< reserved for experiments
+ ME_HEX, ///< hexagon based search
+ ME_UMH, ///< uneven multi-hexagon search
+ ME_ITER, ///< iterative search
+ ME_TESA ///< transformed exhaustive search algorithm
+ );
+
+ TAVDiscard = (
+ {* We leave some space between them for extensions (drop some
+ * keyframes for intra-only or drop just some bidir frames).
+ *}
+ AVDISCARD_NONE = -16, ///< discard nothing
+ AVDISCARD_DEFAULT = 0, ///< discard useless packets like 0 size packets in avi
+ AVDISCARD_NONREF = 8, ///< discard all non reference
+ AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
+ AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
+ AVDISCARD_ALL = 48 ///< discard all
+ );
+
+ TAVColorPrimaries = (
+ AVCOL_PRI_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
+ AVCOL_PRI_UNSPECIFIED = 2,
+ AVCOL_PRI_BT470M = 4,
+ AVCOL_PRI_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
+ AVCOL_PRI_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
+ AVCOL_PRI_SMPTE240M = 7, ///< functionally identical to above
+ AVCOL_PRI_FILM = 8,
+ AVCOL_PRI_NB ///< Not part of ABI
+ );
+
+ TAVColorTransferCharacteristic = (
+ AVCOL_TRC_BT709 = 1, ///< also ITU-R BT1361
+ AVCOL_TRC_UNSPECIFIED = 2,
+ AVCOL_TRC_GAMMA22 = 4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
+ AVCOL_TRC_GAMMA28 = 5, ///< also ITU-R BT470BG
+ AVCOL_TRC_NB ///< Not part of ABI
+ );
+
+ TAVColorSpace = (
+ AVCOL_SPC_RGB = 0,
+ AVCOL_SPC_BT709 = 1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
+ AVCOL_SPC_UNSPECIFIED = 2,
+ AVCOL_SPC_FCC = 4,
+ AVCOL_SPC_BT470BG = 5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
+ AVCOL_SPC_SMPTE170M = 6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above
+ AVCOL_SPC_SMPTE240M = 7,
+ AVCOL_SPC_NB ///< Not part of ABI
+ );
+
+ TAVColorRange = (
+ AVCOL_RANGE_UNSPECIFIED = 0,
+ AVCOL_RANGE_MPEG = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
+ AVCOL_RANGE_JPEG = 2, ///< the normal 2^n-1 "JPEG" YUV ranges
+ AVCOL_RANGE_NB ///< Not part of ABI
+ );
+
+(**
+ * X X 3 4 X X are luma samples,
+ * 1 2 1-6 are possible chroma positions
+ * X X 5 6 X 0 is undefined/unknown position
+ *)
+ TAVChromaLocation = (
+ AVCHROMA_LOC_UNSPECIFIED = 0,
+ AVCHROMA_LOC_LEFT = 1, ///< mpeg2/4, h264 default
+ AVCHROMA_LOC_CENTER = 2, ///< mpeg1, jpeg, h263
+ AVCHROMA_LOC_TOPLEFT = 3, ///< DV
+ AVCHROMA_LOC_TOP = 4,
+ AVCHROMA_LOC_BOTTOMLEFT = 5,
+ AVCHROMA_LOC_BOTTOM = 6,
+ AVCHROMA_LOC_NB ///< Not part of ABI
+ );
+
+{$IF FF_API_FLAC_GLOBAL_OPTS}
+(**
+ * LPC analysis type
+ *)
+ TAVLPCType = (
+ AV_LPC_TYPE_DEFAULT = -1, ///< use the codec default LPC type
+ AV_LPC_TYPE_NONE = 0, ///< do not use LPC prediction or use all zero coefficients
+ AV_LPC_TYPE_FIXED = 1, ///< fixed LPC coefficients
+ AV_LPC_TYPE_LEVINSON = 2, ///< Levinson-Durbin recursion
+ AV_LPC_TYPE_CHOLESKY = 3, ///< Cholesky factorization
+ AV_LPC_TYPE_NB ///< Not part of ABI
+ );
+{$IFEND}
+
+ TAVAudioServiceType =(
+ AV_AUDIO_SERVICE_TYPE_MAIN = 0,
+ AV_AUDIO_SERVICE_TYPE_EFFECTS = 1,
+ AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED = 2,
+ AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED = 3,
+ AV_AUDIO_SERVICE_TYPE_DIALOGUE = 4,
+ AV_AUDIO_SERVICE_TYPE_COMMENTARY = 5,
+ AV_AUDIO_SERVICE_TYPE_EMERGENCY = 6,
+ AV_AUDIO_SERVICE_TYPE_VOICE_OVER = 7,
+ AV_AUDIO_SERVICE_TYPE_KARAOKE = 8,
+ AV_AUDIO_SERVICE_TYPE_NB ///< Not part of ABI
+ );
+
+ PRcOverride = ^TRcOverride;
+ TRcOverride = record {16}
+ start_frame: cint;
+ end_frame: cint;
+ qscale: cint; // if this is 0 then quality_factor will be used instead
+ quality_factor: cfloat;
+ end;
+
+const
+ FF_MAX_B_FRAMES = 16;
+
+{* encoding support
+ These flags can be passed in AVCodecContext.flags before initialization.
+ Note: Not everything is supported yet.
+*}
+
+ CODEC_FLAG_QSCALE = $0002; ///< Use fixed qscale.
+ CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / advanced prediction for H263.
+ CODEC_FLAG_QPEL = $0010; ///< use qpel MC.
+ CODEC_FLAG_GMC = $0020; ///< use GMC.
+ CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0>.
+ CODEC_FLAG_PART = $0080; ///< Use data partitioning.
+ {**
+ * The parent program guarantees that the input for B-frames containing
+ * streams is not written to for at least s->max_b_frames+1 frames, if
+ * this is not set the input will be copied.
+ *}
+ CODEC_FLAG_INPUT_PRESERVED = $0100;
+ CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode
+ CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode
+ CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg)
+ CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale
+ CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges
+ CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding
+ CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random
+ // location instead of only at frame boundaries */
+ CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization
+ CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct
+ CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay
+ CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan
+ 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_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction
+ CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector
+ CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp
+ CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon
+ CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc
+ CODEC_FLAG_OBMC = $00000001; ///< OBMC
+ CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter
+ CODEC_FLAG_H263P_SLICE_STRUCT = $10000000;
+ CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation
+ CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data
+ CODEC_FLAG_CLOSED_GOP = $80000000;
+ CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks
+ CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size
+ CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding
+ CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata
+ CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references
+ CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames
+ CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition
+ CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform
+ CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip
+ CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters
+ CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization
+ CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table
+ CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
+ CODEC_FLAG2_DROP_FRAME_TIMECODE = $00002000; ///< timecode is in drop frame format.
+ CODEC_FLAG2_SKIP_RD = $00004000; ///< RD optimal MB level residual skipping
+ CODEC_FLAG2_CHUNKS = $00008000; ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
+ CODEC_FLAG2_NON_LINEAR_QUANT = $00010000; ///< Use MPEG-2 nonlinear quantizer.
+ CODEC_FLAG2_BIT_RESERVOIR = $00020000; ///< Use a bit reservoir when encoding if possible
+ CODEC_FLAG2_MBTREE = $00040000; ///< Use macroblock tree ratecontrol (x264 only)
+ CODEC_FLAG2_PSY = $00080000; ///< Use psycho visual optimizations.
+ CODEC_FLAG2_SSIM = $00100000; ///< Compute SSIM during encoding, error[] values are undefined.
+ CODEC_FLAG2_INTRA_REFRESH = $00200000; ///< Use periodic insertion of intra blocks instead of keyframes.
+
+(* Unsupported options :
+ * Syntax Arithmetic coding (SAC)
+ * Reference Picture Selection
+ * Independant Segment Decoding *)
+(* /Fx *)
+(* codec capabilities *)
+
+ CODEC_CAP_DRAW_HORIZ_BAND = $0001; ///< decoder can use draw_horiz_band callback
+
+ (**
+ * Codec uses get_buffer() for allocating buffers and supports custom allocators.
+ * If not set, it might not use get_buffer() at all or use operations that
+ * assume the buffer was allocated by avcodec_default_get_buffer.
+ *)
+ 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;
+
+ (**
+ * Codec can export data for HW decoding (VDPAU).
+ *)
+ CODEC_CAP_HWACCEL_VDPAU = $0080;
+
+ (**
+ * Codec can output multiple frames per AVPacket
+ * Normally demuxers return one frame at a time, demuxers which do not do
+ * are connected to a parser to split what they return into proper frames.
+ * This flag is reserved to the very rare category of codecs which have a
+ * bitstream that cannot be split into frames without timeconsuming
+ * operations like full decoding. Demuxers carring such bitstreams thus
+ * may return multiple frames in a packet. This has many disadvantages like
+ * prohibiting stream copy in many cases thus it should only be considered
+ * as a last resort.
+ *)
+ CODEC_CAP_SUBFRAMES = $0100;
+
+ (**
+ * Codec is experimental and is thus avoided in favor of non experimental
+ * encoders
+ *)
+ CODEC_CAP_EXPERIMENTAL = $0200;
+
+ (**
+ * Codec should fill in channel configuration and samplerate instead of container
+ *)
+ CODEC_CAP_CHANNEL_CONF = $0400;
+
+ (**
+ * Codec is able to deal with negative linesizes
+ *)
+ CODEC_CAP_NEG_LINESIZES = $0800;
+
+ (**
+ * Codec supports frame-level multithreading.
+ *)
+ CODEC_CAP_FRAME_THREADS = $1000;
+
+ (**
+ * Codec supports slice-based (or partition-based) multithreading.
+ *)
+ CODEC_CAP_SLICE_THREADS = $2000;
+
+ (**
+ * Codec is lossless.
+ *)
+ CODEC_CAP_LOSSLESS = $80000000;
+
+ //the following defines may change, don't expect compatibility if you use them
+ MB_TYPE_INTRA4x4 = $001;
+ MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific
+ MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific
+ MB_TYPE_16x16 = $008;
+ MB_TYPE_16x8 = $010;
+ MB_TYPE_8x16 = $020;
+ MB_TYPE_8x8 = $040;
+ MB_TYPE_INTERLACED = $080;
+ MB_TYPE_DIRECT2 = $100; //FIXME
+ MB_TYPE_ACPRED = $200;
+ MB_TYPE_GMC = $400;
+ MB_TYPE_SKIP = $800;
+ MB_TYPE_P0L0 = $1000;
+ MB_TYPE_P1L0 = $2000;
+ MB_TYPE_P0L1 = $4000;
+ MB_TYPE_P1L1 = $8000;
+ MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0);
+ MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1);
+ MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1);
+ MB_TYPE_QUANT = $0010000;
+ MB_TYPE_CBP = $0020000;
+ //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
+
+type
+(**
+ * Pan Scan area.
+ * This specifies the area which should be displayed.
+ * Note there may be multiple such areas for one frame.
+ *)
+ PAVPanScan = ^TAVPanScan;
+ TAVPanScan = record {24}
+ (*** id.
+ * - encoding: set by user.
+ * - decoding: set by libavcodec. *)
+ id: cint;
+
+ (*** width and height in 1/16 pel
+ * - encoding: set by user.
+ * - decoding: set by libavcodec. *)
+ width: cint;
+ height: cint;
+
+ (*** position of the top left corner in 1/16 pel for up to 3 fields/frames.
+ * - encoding: set by user.
+ * - decoding: set by libavcodec. *)
+ position: array [0..2] of array [0..1] of cint16;
+ end; {TAVPanScan}
+
+const
+ FF_QSCALE_TYPE_MPEG1 = 0;
+ FF_QSCALE_TYPE_MPEG2 = 1;
+ FF_QSCALE_TYPE_H264 = 2;
+ FF_QSCALE_TYPE_VP56 = 3;
+
+ FF_BUFFER_TYPE_INTERNAL = 1;
+ FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user)
+ FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
+ FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything.
+
+{$IF FF_API_OLD_FF_PICT_TYPES}
+(* DEPRECATED, directly use the AV_PICTURE_TYPE_* enum values *)
+ FF_I_TYPE = 1; ///< Intra
+ FF_P_TYPE = 2; ///< Predicted
+ FF_B_TYPE = 3; ///< Bi-dir predicted
+ FF_S_TYPE = 4; ///< S(GMC)-VOP MPEG4
+ FF_SI_TYPE = 5; ///< Switching Intra
+ FF_SP_TYPE = 6; ///< Switching Predicted
+ FF_BI_TYPE = 7;
+{$IFEND}
+
+ 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 = $08; // Codec will reuse the buffer (update)
+
+ FF_ASPECT_EXTENDED = 15;
+
+ FF_RC_STRATEGY_XVID = 1;
+
+ FF_BUG_AUTODETECT = 1; ///< autodetection
+ FF_BUG_OLD_MSMPEG4 = 2;
+ FF_BUG_XVID_ILACE = 4;
+ FF_BUG_UMP4 = 8;
+ FF_BUG_NO_PADDING = 16;
+ FF_BUG_AMV = 32;
+ FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default
+ FF_BUG_QPEL_CHROMA = 64;
+ FF_BUG_STD_QPEL = 128;
+ FF_BUG_QPEL_CHROMA2 = 256;
+ FF_BUG_DIRECT_BLOCKSIZE = 512;
+ FF_BUG_EDGE = 1024;
+ FF_BUG_HPEL_CHROMA = 2048;
+ FF_BUG_DC_CLIP = 4096;
+ FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders
+ FF_BUG_TRUNCATED = 16384;
+ //FF_BUG_FAKE_SCALABILITY = 16 //Autodetection should work 100%.
+
+ FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to an older more strict version of the spec or reference software
+ FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences
+ FF_COMPLIANCE_NORMAL = 0;
+{$IF FF_API_INOFFICIAL}
+ FF_COMPLIANCE_INOFFICIAL = -1; ///< Allow inofficial extensions
+{$IFEND}
+ FF_COMPLIANCE_UNOFFICIAL = -1; ///< Allow unofficial extensions
+ FF_COMPLIANCE_EXPERIMENTAL = -2; ///< Allow nonstandardized experimental things.
+
+ FF_ER_CAREFUL = 1;
+ FF_ER_COMPLIANT = 2;
+ FF_ER_AGGRESSIVE = 3;
+ FF_ER_VERY_AGGRESSIVE = 4;
+
+ FF_DCT_AUTO = 0;
+ FF_DCT_FASTINT = 1;
+ FF_DCT_INT = 2;
+ FF_DCT_MMX = 3;
+ FF_DCT_MLIB = 4;
+ FF_DCT_ALTIVEC = 5;
+ FF_DCT_FAAN = 6;
+
+ FF_IDCT_AUTO = 0;
+ FF_IDCT_INT = 1;
+ FF_IDCT_SIMPLE = 2;
+ FF_IDCT_SIMPLEMMX = 3;
+ FF_IDCT_LIBMPEG2MMX = 4;
+ FF_IDCT_PS2 = 5;
+ FF_IDCT_MLIB = 6;
+ FF_IDCT_ARM = 7;
+ FF_IDCT_ALTIVEC = 8;
+ FF_IDCT_SH4 = 9;
+ FF_IDCT_SIMPLEARM = 10;
+ FF_IDCT_H264 = 11;
+ FF_IDCT_VP3 = 12;
+ FF_IDCT_IPP = 13;
+ FF_IDCT_XVIDMMX = 14;
+ FF_IDCT_CAVS = 15;
+ FF_IDCT_SIMPLEARMV5TE= 16;
+ FF_IDCT_SIMPLEARMV6 = 17;
+ FF_IDCT_SIMPLEVIS = 18;
+ FF_IDCT_WMV2 = 19;
+ FF_IDCT_FAAN = 20;
+ FF_IDCT_EA = 21;
+ FF_IDCT_SIMPLENEON = 22;
+ FF_IDCT_SIMPLEALPHA = 23;
+ FF_IDCT_BINK = 24;
+
+ FF_EC_GUESS_MVS = 1;
+ FF_EC_DEBLOCK = 2;
+
+{$IF FF_API_MM_FLAGS}
+ FF_MM_FORCE = AV_CPU_FLAG_FORCE;
+ FF_MM_MMX = AV_CPU_FLAG_MMX;
+ FF_MM_3DNOW = AV_CPU_FLAG_3DNOW;
+ FF_MM_MMXEXT = AV_CPU_FLAG_MMX2;
+ FF_MM_MMX2 = AV_CPU_FLAG_MMX2;
+ FF_MM_SSE = AV_CPU_FLAG_SSE;
+ FF_MM_SSE2 = AV_CPU_FLAG_SSE2;
+ FF_MM_SSE2SLOW = AV_CPU_FLAG_SSE2SLOW;
+ FF_MM_3DNOWEXT = AV_CPU_FLAG_3DNOWEXT;
+ FF_MM_SSE3 = AV_CPU_FLAG_SSE3;
+ FF_MM_SSE3SLOW = AV_CPU_FLAG_SSE3SLOW;
+ FF_MM_SSSE3 = AV_CPU_FLAG_SSSE3;
+ FF_MM_SSE4 = AV_CPU_FLAG_SSE4;
+ FF_MM_SSE42 = AV_CPU_FLAG_SSE42;
+ FF_MM_IWMMXT = AV_CPU_FLAG_IWMMXT;
+ FF_MM_ALTIVEC = AV_CPU_FLAG_ALTIVEC;
+{$IFEND}
+
+ FF_PRED_LEFT = 0;
+ FF_PRED_PLANE = 1;
+ FF_PRED_MEDIAN = 2;
+
+ FF_DEBUG_PICT_INFO = 1;
+ FF_DEBUG_RC = 2;
+ FF_DEBUG_BITSTREAM = 4;
+ FF_DEBUG_MB_TYPE = 8;
+ FF_DEBUG_QP = 16;
+ FF_DEBUG_MV = 32;
+ FF_DEBUG_DCT_COEFF = $00000040;
+ FF_DEBUG_SKIP = $00000080;
+ FF_DEBUG_STARTCODE = $00000100;
+ FF_DEBUG_PTS = $00000200;
+ FF_DEBUG_ER = $00000400;
+ FF_DEBUG_MMCO = $00000800;
+ FF_DEBUG_BUGS = $00001000;
+ FF_DEBUG_VIS_QP = $00002000;
+ FF_DEBUG_VIS_MB_TYPE = $00004000;
+ FF_DEBUG_BUFFERS = $00008000;
+
+ FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames
+ FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames
+ FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames
+
+ FF_CMP_SAD = 0;
+ FF_CMP_SSE = 1;
+ FF_CMP_SATD = 2;
+ FF_CMP_DCT = 3;
+ FF_CMP_PSNR = 4;
+ FF_CMP_BIT = 5;
+ FF_CMP_RD = 6;
+ FF_CMP_ZERO = 7;
+ FF_CMP_VSAD = 8;
+ FF_CMP_VSSE = 9;
+ FF_CMP_NSSE = 10;
+ FF_CMP_W53 = 11;
+ FF_CMP_W97 = 12;
+ FF_CMP_DCTMAX = 13;
+ FF_CMP_DCT264 = 14;
+ FF_CMP_CHROMA = 256;
+
+ FF_DTG_AFD_SAME = 8;
+ FF_DTG_AFD_4_3 = 9;
+ FF_DTG_AFD_16_9 = 10;
+ FF_DTG_AFD_14_9 = 11;
+ FF_DTG_AFD_4_3_SP_14_9 = 13;
+ FF_DTG_AFD_16_9_SP_14_9 = 14;
+ FF_DTG_AFD_SP_4_3 = 15;
+
+ FF_DEFAULT_QUANT_BIAS = 999999;
+
+ FF_CODER_TYPE_VLC = 0;
+ FF_CODER_TYPE_AC = 1;
+ FF_CODER_TYPE_RAW = 2;
+ FF_CODER_TYPE_RLE = 3;
+ FF_CODER_TYPE_DEFLATE = 4;
+
+ SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display
+ SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
+ SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
+
+ FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp
+ FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits
+ FF_MB_DECISION_RD = 2; ///< rate distortion
+
+{$IF FF_API_ANTIALIAS_ALGO}
+ FF_AA_AUTO = 0;
+ FF_AA_FASTINT = 1; //not implemented yet
+ FF_AA_INT = 2;
+ FF_AA_FLOAT = 3;
+{$IFEND}
+
+ FF_PROFILE_UNKNOWN = -99;
+ FF_PROFILE_RESERVED = -100;
+
+ FF_PROFILE_AAC_MAIN = 0;
+ FF_PROFILE_AAC_LOW = 1;
+ FF_PROFILE_AAC_SSR = 2;
+ FF_PROFILE_AAC_LTP = 3;
+
+ FF_PROFILE_DTS = 20;
+ FF_PROFILE_DTS_ES = 30;
+ FF_PROFILE_DTS_96_24 = 40;
+ FF_PROFILE_DTS_HD_HRA = 50;
+ FF_PROFILE_DTS_HD_MA = 60;
+ FF_PROFILE_MPEG2_422 = 0;
+ FF_PROFILE_MPEG2_HIGH = 1;
+ FF_PROFILE_MPEG2_SS = 2;
+ FF_PROFILE_MPEG2_SNR_SCALABLE = 3;
+ FF_PROFILE_MPEG2_MAIN = 4;
+ FF_PROFILE_MPEG2_SIMPLE= 5;
+ FF_PROFILE_H264_CONSTRAINED = (1<<9); // 8+1; constraint_set1_flag
+ FF_PROFILE_H264_INTRA = (1<<11); // 8+3; constraint_set3_flag
+ FF_PROFILE_H264_BASELINE = 66;
+ FF_PROFILE_H264_CONSTRAINED_BASELINE = (66 or FF_PROFILE_H264_CONSTRAINED);
+ FF_PROFILE_H264_MAIN = 77;
+ FF_PROFILE_H264_EXTENDED = 88;
+ FF_PROFILE_H264_HIGH = 100;
+ FF_PROFILE_H264_HIGH_10 = 110;
+ FF_PROFILE_H264_HIGH_10_INTRA = (110 or FF_PROFILE_H264_INTRA);
+ FF_PROFILE_H264_HIGH_422 = 122;
+ FF_PROFILE_H264_HIGH_422_INTRA = (122 or FF_PROFILE_H264_INTRA);
+ FF_PROFILE_H264_HIGH_444 = 144;
+ FF_PROFILE_H264_HIGH_444_PREDICTIVE = 244;
+ FF_PROFILE_H264_HIGH_444_INTRA = (244 or FF_PROFILE_H264_INTRA);
+ FF_PROFILE_H264_CAVLC_444 = 44;
+ FF_PROFILE_VC1_SIMPLE = 0;
+ FF_PROFILE_VC1_MAIN = 1;
+ FF_PROFILE_VC1_COMPLEX = 2;
+ FF_PROFILE_VC1_ADVANCED = 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;
+
+ FF_THREAD_FRAME = 1; //< Decode more than one frame at once
+ FF_THREAD_SLICE = 2; //< Decode more than one part of a single frame at once
+
+ AVPALETTE_SIZE = 1024;
+ AVPALETTE_COUNT = 256;
+
+type
+ PAVPacket = ^TAVPacket;
+ TAVPacket = record
+(*
+ * Presentation timestamp in AVStream->time_base units; the time at which
+ * the decompressed packet will be presented to the user.
+ * Can be AV_NOPTS_VALUE if it is not stored in the file.
+ * pts MUST be larger or equal to dts as presentation cannot happen before
+ * decompression, unless one wants to view hex dumps. Some formats misuse
+ * the terms dts and pts/cts to mean something different. Such timestamps
+ * must be converted to true pts/dts before they are stored in AVPacket.
+ *)
+ pts: cint64;
+(*
+ * Decompression timestamp in AVStream->time_base units; the time at which
+ * the packet is decompressed.
+ * Can be AV_NOPTS_VALUE if it is not stored in the file.
+ *)
+ dts: cint64;
+ data: PByteArray;
+ size: cint;
+ stream_index: cint;
+ flags: cint;
+(*
+ * Duration of this packet in AVStream->time_base units, 0 if unknown.
+ * Equals next_pts - this_pts in presentation order.
+ *)
+ duration: cint;
+ destruct: procedure (para1: PAVPacket); cdecl;
+ priv: pointer;
+ pos: cint64; // byte position in stream, -1 if unknown
+
+(*
+ * Time difference in AVStream->time_base units from the pts of this
+ * packet to the point at which the output from the decoder has converged
+ * independent from the availability of previous frames. That is, the
+ * frames are virtually identical no matter if decoding started from
+ * the very first frame or from this keyframe.
+ * Is AV_NOPTS_VALUE if unknown.
+ * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
+ * set.
+ *
+ * The purpose of this field is to allow seeking in streams that have no
+ * keyframes in the conventional sense. It corresponds to the
+ * recovery point SEI in H.264 and match_time_delta in NUT. It is also
+ * essential for some types of subtitle streams to ensure that all
+ * subtitles are correctly displayed after seeking.
+ *)
+ convergence_duration: cint64;
+ end; {TAVPacket}
+
+const
+ AV_PKT_FLAG_KEY = $0001;
+{$IF LIBAVCODEC_VERSION_MAJOR < 53}
+ PKT_FLAG_KEY = AV_PKT_FLAG_KEY;
+{$IFEND}
+
+type
+ PAVCodecContext = ^TAVCodecContext;
+
+ (**
+ * 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
+ (**
+ * pointer to the picture planes.
+ * This might be different from the first allocated byte
+ * - encoding:
+ * - decoding:
+ *)
+ data: array [0..3] of pbyte;
+ linesize: array [0..3] of cint;
+ (**
+ * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer.
+ * This isn't used by libavcodec unless the default get/release_buffer() is used.
+ * - encoding:
+ * - decoding:
+ *)
+ base: array [0..3] of pbyte;
+ (**
+ * 1 -> keyframe, 0-> not
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ key_frame: cint;
+ (**
+ * Picture type of the frame, see ?_TYPE below.
+ * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
+ * - decoding: Set by libavcodec.
+ *)
+ pict_type: TAVPictureType;
+ (**
+ * presentation timestamp in time_base units (time when frame should be shown to user)
+ * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed.
+ * - encoding: MUST be set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ pts: cint64;
+ (**
+ * picture number in bitstream order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ coded_picture_number: cint;
+ (**
+ * picture number in display order
+ * - encoding: set by
+ * - decoding: Set by libavcodec.
+ *)
+ display_picture_number: cint;
+
+ (**
+ * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
+ * - encoding: Set by libavcodec. for coded_picture (and set by user for input).
+ * - decoding: Set by libavcodec.
+ *)
+ quality: cint;
+
+ (**
+ * buffer age (1->was last buffer and dint change, 2->..., ...).
+ * Set to INT_MAX if the buffer has not been used yet.
+ * - encoding: unused
+ * - decoding: MUST be set by get_buffer().
+ *)
+ age: cint;
+
+ (**
+ * is this picture used as reference
+ * The values for this are the same as the MpegEncContext.picture_structure
+ * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
+ * Set to 4 for delayed, non-reference frames.
+ * - encoding: unused
+ * - decoding: Set by libavcodec. (before get_buffer() call)).
+ *)
+ reference: cint;
+
+ (**
+ * QP table
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ qscale_table: PShortint;
+
+ (**
+ * QP store stride
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ qstride: cint;
+
+ (**
+ * mbskip_table[mb]>=1 if MB didn't change
+ * stride= mb_width = (width+15)>>4
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ mbskip_table: pbyte;
+
+ (**
+ * motion vector table
+ * @code
+ * example:
+ * int mv_sample_log2= 4 - motion_subsample_log2;
+ * int mb_width= (width+15)>>4;
+ * int mv_stride= (mb_width << mv_sample_log2) + 1;
+ * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
+ * @endcode
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ //int16_t (*motion_val[2])[2];
+ motion_val: array [0..1] of pointer;
+
+ (**
+ * macroblock type table
+ * mb_type_base + mb_width + 2
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ mb_type: PCuint;
+
+ (**
+ * log2 of the size of the block which a single vector in motion_val represents:
+ * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ motion_subsample_log2: byte;
+
+ (**
+ * for some private data of the user
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ opaque: pointer;
+
+ (**
+ * error
+ * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.
+ * - decoding: unused
+ *)
+ error: array [0..3] of cuint64;
+
+ (**
+ * type of the buffer (to keep track of who has to deallocate data[*])
+ * - encoding: Set by the one who allocates it.
+ * - decoding: Set by the one who allocates it.
+ * Note: User allocated (direct rendering) & internal buffers cannot coexist currently.
+ *)
+ type_: cint;
+
+ (**
+ * When decoding, this signals how much the picture must be delayed.
+ * extra_delay = repeat_pict / (2*fps)
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ repeat_pict: cint;
+
+ (**
+ *
+ *)
+ qscale_type: cint;
+
+ (**
+ * The content of the picture is interlaced.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec. (default 0)
+ *)
+ interlaced_frame: cint;
+
+ (**
+ * If the content is interlaced, is top field displayed first.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ top_field_first: cint;
+
+ (**
+ * Pan scan.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ pan_scan: PAVPanScan;
+
+ (**
+ * Tell user application that palette has changed from previous frame.
+ * - encoding: ??? (no palette-enabled encoder yet)
+ * - decoding: Set by libavcodec. (default 0).
+ *)
+ palette_has_changed: cint;
+
+ (**
+ * codec suggestion on buffer type if != 0
+ * - encoding: unused
+ * - decoding: Set by libavcodec. (before get_buffer() call)).
+ *)
+ buffer_hints: cint;
+
+ (**
+ * DCT coefficients
+ * - encoding: unused
+ * - decoding: Set by libavcodec.
+ *)
+ dct_coeff: PsmallInt;
+
+ (**
+ * motion reference frame index
+ * the order in which these are stored can depend on the codec.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ ref_index: array [0..1] of PShortint;
+
+ (**
+ * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque
+ * PTS but can be anything).
+ * The user sets AVCodecContext.reordered_opaque to represent the input at
+ * that time,
+ * the decoder reorders values as needed and sets AVFrame.reordered_opaque
+ * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque
+ * @deprecated in favor of pkt_pts
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ reordered_opaque: cint64;
+
+ (**
+ * hardware accelerator private data (FFmpeg allocated)
+ * - encoding: unused
+ * - decoding: Set by libavcodec
+ *)
+ hwaccel_picture_private: pointer;
+
+ (**
+ * reordered pts from the last AVPacket that has been input into the decoder
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ pkt_pts: cint64;
+
+ (**
+ * dts from the last AVPacket that has been input into the decoder
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ pkt_dts: cint64;
+
+ (**
+ * the AVCodecContext which ff_thread_get_buffer() was last called on
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ owner: PAVCodecContext;
+
+ (**
+ * used by multithreading to store frame-specific info
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ thread_opaque: pointer;
+
+ (**
+ * frame timestamp estimated using various heuristics, in stream time base
+ * - encoding: unused
+ * - decoding: set by libavcodec, read by user.
+ *)
+ best_effort_timestamp: cint64;
+
+ (**
+ * reordered pos from the last AVPacket that has been input into the decoder
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ pkt_pos: cint64;
+
+ (**
+ * reordered sample aspect ratio for the video frame, 0/1 if unknown\unspecified
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ sample_aspect_ratio: TAVRational;
+
+ (**
+ * width and height of the video frame
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ width, height: cint;
+
+ (**
+ * format of the frame, -1 if unknown or unset
+ * It should be cast to the corresponding enum (enum PixelFormat
+ * for video, enum AVSampleFormat for audio)
+ * - encoding: unused
+ * - decoding: Read by user.
+ *)
+ format: cint;
+ end; {TAVFrame}
+
+ PAVClass = ^TAVClass;
+
+ PAVCodec = ^TAVCodec;
+
+ PAVHWAccel = ^TAVHWAccel;
+
+ // int[4]
+ PQuadIntArray = ^TQuadIntArray;
+ TQuadIntArray = array [0..3] of cint;
+ // int (*func)(struct AVCodecContext *c2, void *arg)
+ TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): cint; cdecl;
+ // int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr)
+ TExecute2Func = function(c2: PAVCodecContext; arg: Pointer; jobnr: cint; threadnr: cint): cint; cdecl;
+
+{$IF FF_API_PALETTE_CONTROL}
+(**
+ * AVPaletteControl
+ * This structure defines a method for communicating palette changes
+ * between and demuxer and a decoder.
+ *
+ * @deprecated Use AVPacket to send palette changes instead.
+ * This is totally broken.
+ *)
+ PAVPaletteControl = ^TAVPaletteControl;
+ TAVPaletteControl = record
+ (* demuxer sets this to 1 to indicate the palette has changed;
+ * decoder resets to 0 *)
+ palette_changed: cint;
+
+ (* 4-byte ARGB palette entries, stored in native byte order; note that
+ * the individual palette components should be on a 8-bit scale; if
+ * the palette data comes from a IBM VGA native format, the component
+ * data is probably 6 bits in size and needs to be scaled *)
+ palette: array [0..AVPALETTE_COUNT - 1] of cuint;
+ end; {deprecated;}
+{$IFEND}
+
+ (**
+ * main external API structure.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVCodecContext) must not be used outside libav*.
+ *)
+ TAVCodecContext = record {720}
+ (**
+ * information on struct for av_log
+ * - set by avcodec_alloc_context
+ *)
+ av_class: PAVClass;
+ (**
+ * the average bitrate
+ * - encoding: Set by user; unused for constant quantizer encoding.
+ * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream.
+ *)
+ bit_rate: cint;
+
+ (**
+ * number of bits the bitstream is allowed to diverge from the reference.
+ * the reference can be CBR (for CBR pass1) or VBR (for pass2)
+ * - encoding: Set by user; unused for constant quantizer encoding.
+ * - decoding: unused
+ *)
+ bit_rate_tolerance: cint;
+
+ (**
+ * CODEC_FLAG_*.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ flags: cint;
+
+ (**
+ * Some codecs need additional format info. It is stored here.
+ * If any muxer uses this then ALL demuxers/parsers AND encoders for the
+ * specific codec MUST set it correctly otherwise stream copy breaks.
+ * In general use of this field by muxers is not recommanded.
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec. (FIXME: Is this OK?)
+ *)
+ sub_id: cint;
+
+ (**
+ * Motion estimation algorithm used for video coding.
+ * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
+ * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific]
+ * - encoding: MUST be set by user.
+ * - decoding: unused
+ *)
+ me_method: cint;
+
+ (**
+ * some codecs need / can use extradata like Huffman tables.
+ * mjpeg: Huffman tables
+ * rv10: additional flags
+ * mpeg4: global headers (they can be in the bitstream or here)
+ * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
+ * than extradata_size to avoid prolems if it is read with the bitstream reader.
+ * The bytewise contents of extradata must not depend on the architecture or CPU endianness.
+ * - encoding: Set/allocated/freed by libavcodec.
+ * - decoding: Set/allocated/freed by user.
+ *)
+ extradata: pbyte;
+ extradata_size: cint;
+
+ (**
+ * This is the fundamental unit of time (in seconds) in terms
+ * of which frame timestamps are represented. For fixed-fps content,
+ * timebase should be 1/framerate and timestamp increments should be
+ * identically 1.
+ * - encoding: MUST be set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ time_base: TAVRational;
+
+ (* video only *)
+ (**
+ * picture width / height.
+ * - encoding: MUST be set by user.
+ * - decoding: Set by libavcodec.
+ * Note: For compatibility it is possible to set this instead of
+ * coded_width/height before decoding.
+ *)
+ width, height: cint;
+
+ (**
+ * the number of pictures in a group of pictures, or 0 for intra_only
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ gop_size: cint;
+
+ (**
+ * Pixel format, see PIX_FMT_xxx.
+ * May be set by the demuxer if known from headers.
+ * May be overriden by the decoder if it knows better.
+ * - encoding: Set by user.
+ * - decoding: Set by user if known, overridden by libavcodec if known
+ *)
+ pix_fmt: TAVPixelFormat;
+
+{$IF FF_API_RATE_EMU}
+ (**
+ * Frame rate emulation. If not zero, the lower layer (i.e. format handler)
+ * has to read frames at native frame rate.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rate_emu: cint;
+{$IFEND}
+
+ (**
+ * If non NULL, 'draw_horiz_band' is called by the libavcodec
+ * decoder to draw a horizontal band. It improves cache usage. Not
+ * all codecs can do that. You must check the codec capabilities
+ * beforehand.
+ * The function is also used by hardware acceleration APIs.
+ * It is called at least once during frame decoding to pass
+ * the data needed for hardware render.
+ * In that mode instead of pixel data, AVFrame points to
+ * a structure specific to the acceleration API. The application
+ * reads the structure and can change some fields to indicate progress
+ * or mark state.
+ * - encoding: unused
+ * - decoding: Set by user.
+ * @param height the height of the slice
+ * @param y the y position of the slice
+ * @param type 1->top field, 2->bottom field, 3->frame
+ * @param offset offset into the AVFrame.data from which the slice should be read
+ *)
+ draw_horiz_band: procedure (s: PAVCodecContext;
+ src: {const} PAVFrame; offset: PQuadIntArray;
+ y: cint; type_: cint; height: cint); cdecl;
+
+ (* audio only *)
+ sample_rate: cint; ///< samples per second
+ channels: cint; ///< number of audio channels
+
+ (**
+ * audio sample format
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ sample_fmt: TAVSampleFormat; ///< sample format
+
+ (* The following data should not be initialized. *)
+ (**
+ * Samples per packet, initialized when calling 'init'.
+ *)
+ frame_size: cint;
+ frame_number: cint; ///< audio or video frame number
+{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
+ real_pict_num: cint; ///< returns the real picture number of previous encoded frame
+{$IFEND}
+
+ (**
+ * Number of frames the decoded output will be delayed relative to
+ * the encoded input.
+ * - encoding: Set by libavcodec.
+ * - decoding: unused
+ *)
+ delay: cint;
+
+ (* - encoding parameters *)
+ qcompress: cfloat; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
+ qblur: cfloat; ///< amount of qscale smoothing over time (0.0-1.0)
+
+ (**
+ * minimum quantizer
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ qmin: cint;
+
+ (**
+ * maximum quantizer
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ qmax: cint;
+
+ (**
+ * maximum quantizer difference between frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_qdiff: cint;
+
+ (**
+ * maximum number of B-frames between non-B-frames
+ * Note: The output will be delayed by max_b_frames+1 relative to the input.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_b_frames: cint;
+
+ (**
+ * qscale factor between IP and B-frames
+ * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset).
+ * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_quant_factor: cfloat;
+
+ (** obsolete FIXME remove *)
+ rc_strategy: cint;
+
+ b_frame_strategy: cint;
+
+{$IF FF_API_HURRY_UP}
+ (**
+ * hurry up amount
+ * - encoding: unused
+ * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header
+ * @deprecated Deprecated in favor of skip_idct and skip_frame.
+ *)
+ hurry_up: cint;
+{$IFEND}
+
+ codec: PAVCodec;
+
+ priv_data: pointer;
+
+ rtp_payload_size: cint; (* The size of the RTP payload: the coder will *)
+ (* do it's best to deliver a chunk with size *)
+ (* below rtp_payload_size, the chunk will start *)
+ (* with a start code on some codecs like H.263 *)
+ (* This doesn't take account of any particular *)
+ (* headers inside the transmited RTP payload *)
+
+
+ (* The RTP callback: This function is called *)
+ (* every time the encoder has a packet to send *)
+ (* Depends on the encoder if the data starts *)
+ (* with a Start Code (it should) H.263 does. *)
+ (* mb_nb contains the number of macroblocks *)
+ (* encoded in the RTP payload *)
+ rtp_callback: procedure (avctx: PAVCodecContext; data: pointer;
+ size: cint; mb_nb: cint); cdecl;
+
+ (* statistics, used for 2-pass encoding *)
+ mv_bits: cint;
+ header_bits: cint;
+ i_tex_bits: cint;
+ p_tex_bits: cint;
+ i_count: cint;
+ p_count: cint;
+ skip_count: cint;
+ misc_bits: cint;
+
+ (**
+ * number of bits used for the previously encoded frame
+ * - encoding: Set by libavcodec.
+ * - decoding: unused
+ *)
+ frame_bits: cint;
+
+ (**
+ * Private data of the user, can be used to carry app specific stuff.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ opaque: pointer;
+
+ codec_name: array [0..31] of AnsiChar;
+ codec_type: TAVMediaType; (* see AVMEDIA_TYPE_xxx *)
+ codec_id: TCodecID; (* see CODEC_ID_xxx *)
+
+ (**
+ * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * This is used to work around some encoder bugs.
+ * A demuxer should set this to what is stored in the field used to identify the codec.
+ * If there are multiple such fields in a container then the demuxer should choose the one
+ * which maximizes the information about the used codec.
+ * If the codec tag field in a container is larger then 32 bits then the demuxer should
+ * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
+ * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
+ * first.
+ * - encoding: Set by user, if not then the default based on codec_id will be used.
+ * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
+ *)
+ codec_tag: cuint;
+
+ (**
+ * Work around bugs in encoders which sometimes cannot be detected automatically.
+ * - encoding: Set by user
+ * - decoding: Set by user
+ *)
+ workaround_bugs: cint;
+
+ (**
+ * luma single coefficient elimination threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ luma_elim_threshold: cint;
+
+ (**
+ * chroma single coeff elimination threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ chroma_elim_threshold: cint;
+
+ (**
+ * strictly follow the standard (MPEG4, ...).
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ * Setting this to STRICT or higher means the encoder and decoder will
+ * generally do stupid things, whereas setting it to unofficial or lower
+ * will mean the encoder might produce output that is not supported by all
+ * spec-compliant decoders. Decoders don't differentiate between normal,
+ * unofficial and experimental (that is, they always try to decode things
+ * when they can) unless they are explicitly asked to behave stupidly
+ * (=strictly conform to the specs)
+ *)
+ strict_std_compliance: cint;
+
+ (**
+ * qscale offset between IP and B-frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_quant_offset: cfloat;
+
+ (**
+ * Error recognization; higher values will detect more errors but may
+ * misdetect some more or less valid parts as errors.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ error_recognition: cint;
+
+ (**
+ * Called at the beginning of each frame to get a buffer for it.
+ * If pic.reference is set then the frame will be read later by libavcodec.
+ * avcodec_align_dimensions2() should be used to find the required width and
+ * height, as they normally need to be rounded up to the next multiple of 16.
+ * if CODEC_CAP_DR1 is not set then get_buffer() must call
+ * avcodec_default_get_buffer() instead of providing buffers allocated by
+ * some other means.
+ * - encoding: unused
+ * - decoding: Set by libavcodec, user can override.
+ *)
+ get_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl;
+
+ (**
+ * Called to release buffers which were allocated with get_buffer.
+ * A released buffer can be reused in get_buffer().
+ * pic.data[*] must be set to NULL.
+ * - encoding: unused
+ * - decoding: Set by libavcodec, user can override.
+ *)
+ release_buffer: procedure (c: PAVCodecContext; pic: PAVFrame); cdecl;
+
+ (**
+ * Size of the frame reordering buffer in the decoder.
+ * For MPEG-2 it is 1 IPB or 0 low delay IP.
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ has_b_frames: cint;
+
+ (**
+ * number of bytes per packet if constant and known or 0
+ * Used by some WAV based audio codecs.
+ *)
+ block_align: cint;
+
+ parse_only: cint; (* - decoding only: if true, only parsing is done
+ (function avcodec_parse_frame()). The frame
+ data is returned. Only MPEG codecs support this now. *)
+
+ (**
+ * 0-> h263 quant 1-> mpeg quant
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mpeg_quant: cint;
+
+ (**
+ * pass1 encoding statistics output buffer
+ * - encoding: Set by libavcodec.
+ * - decoding: unused
+ *)
+ stats_out: PAnsiChar;
+
+ (**
+ * 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: PAnsiChar;
+
+ (**
+ * ratecontrol qmin qmax limiting method
+ * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_qsquish: cfloat;
+
+ rc_qmod_amp: cfloat;
+ rc_qmod_freq: cint;
+
+ (**
+ * ratecontrol override, see RcOverride
+ * - encoding: Allocated/set/freed by user.
+ * - decoding: unused
+ *)
+ rc_override: PRcOverride;
+ rc_override_count: cint;
+
+ (**
+ * rate control equation
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ rc_eq: {const} PAnsiChar;
+
+ (**
+ * maximum bitrate
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_max_rate: cint;
+
+ (**
+ * minimum bitrate
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_min_rate: cint;
+
+ (**
+ * decoder bitstream buffer size
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_buffer_size: cint;
+ rc_buffer_aggressivity: cfloat;
+
+ (**
+ * qscale factor between P and I-frames
+ * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset).
+ * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ i_quant_factor: cfloat;
+
+ (**
+ * qscale offset between P and I-frames
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ i_quant_offset: cfloat;
+
+ (**
+ * initial complexity for pass1 ratecontrol
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_initial_cplx: cfloat;
+
+ (**
+ * DCT algorithm, see FF_DCT_* below
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dct_algo: cint;
+
+ (**
+ * luminance masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lumi_masking: cfloat;
+
+ (**
+ * temporary complexity masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ temporal_cplx_masking: cfloat;
+
+ (**
+ * spatial complexity masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ spatial_cplx_masking: cfloat;
+
+ (**
+ * p block masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ p_masking: cfloat;
+
+ (**
+ * darkness masking (0-> disabled)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dark_masking: cfloat;
+
+ (**
+ * IDCT algorithm, see FF_IDCT_* below.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ idct_algo: cint;
+
+ (**
+ * slice count
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by user (or 0).
+ *)
+ slice_count: cint;
+
+ (**
+ * slice offsets in the frame in bytes
+ * - encoding: Set/allocated by libavcodec.
+ * - decoding: Set/allocated by user (or NULL).
+ *)
+ slice_offset: PCint;
+
+ (**
+ * error concealment flags
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ error_concealment: cint;
+
+ (**
+ * dsp_mask could be add used to disable unwanted CPU features
+ * CPU features (i.e. MMX, SSE. ...)
+ *
+ * With the FORCE flag you may instead enable given CPU features.
+ * (Dangerous: Usable in case of misdetection, improper usage however will
+ * result into program crash.)
+ *)
+ dsp_mask: cuint;
+
+ (**
+ * bits per sample/pixel from the demuxer (needed for huffyuv).
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by user.
+ *)
+ bits_per_coded_sample: cint;
+
+ (**
+ * prediction method (needed for huffyuv)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ prediction_method: cint;
+
+ (**
+ * sample aspect ratio (0 if unknown)
+ * That is the width of a pixel divided by the height of the pixel.
+ * Numerator and denominator must be relatively prime and smaller than 256 for some video standards.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ sample_aspect_ratio: TAVRational;
+
+ (**
+ * the picture in the bitstream
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ coded_frame: PAVFrame;
+
+ (**
+ * debug
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ debug: cint;
+
+ (**
+ * debug
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ debug_mv: cint;
+
+ (**
+ * error
+ * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR.
+ * - decoding: unused
+ *)
+ error: array [0..3] of cuint64;
+
+{$IF FF_API_MB_Q}
+ (**
+ * minimum MB quantizer
+ * - encoding: unused
+ * - decoding: unused
+ *)
+ mb_qmin: cint; {deprecated}
+
+ (**
+ * maximum MB quantizer
+ * - encoding: unused
+ * - decoding: unused
+ *)
+ mb_qmax: cint; {deprecated}
+{$IFEND}
+
+ (**
+ * motion estimation comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_cmp: cint;
+
+ (**
+ * subpixel motion estimation comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_sub_cmp: cint;
+ (**
+ * macroblock comparison function (not supported yet)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_cmp: cint;
+ (**
+ * interlaced DCT comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ ildct_cmp: cint;
+
+ (**
+ * ME diamond size & shape
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ dia_size: cint;
+
+ (**
+ * amount of previous MV predictors (2a+1 x 2a+1 square)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ last_predictor_count: cint;
+
+ (**
+ * prepass for motion estimation
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ pre_me: cint;
+
+ (**
+ * motion estimation prepass comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_pre_cmp: cint;
+
+ (**
+ * ME prepass diamond size & shape
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ pre_dia_size: cint;
+
+ (**
+ * subpel ME quality
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_subpel_quality: cint;
+
+ (**
+ * callback to negotiate the pixelFormat
+ * @param fmt is the list of formats which are supported by the codec,
+ * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality.
+ * The first is always the native one.
+ * @return the chosen format
+ * - encoding: unused
+ * - decoding: Set by user, if not set the native format will be chosen.
+ *)
+ get_format: function (s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat; cdecl;
+
+ (**
+ * DTG active format information (additional aspect ratio
+ * information only used in DVB MPEG-2 transport streams)
+ * 0 if not set.
+ *
+ * - encoding: unused
+ * - decoding: Set by decoder.
+ *)
+ dtg_active_format: cint;
+
+ (**
+ * maximum motion estimation search range in subpel units
+ * If 0 then no limit.
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_range: cint;
+
+ (**
+ * intra quantizer bias
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ intra_quant_bias: cint;
+
+ (**
+ * inter quantizer bias
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ inter_quant_bias: cint;
+
+ (**
+ * color table ID
+ * - encoding: unused
+ * - decoding: Which clrtable should be used for 8bit RGB images.
+ * Tables have to be stored somewhere. FIXME
+ *)
+ color_table_id: cint;
+
+ (**
+ * internal_buffer count
+ * Don't touch, used by libavcodec default_get_buffer().
+ *)
+ internal_buffer_count: cint;
+
+ (**
+ * internal_buffers
+ * Don't touch, used by libavcodec default_get_buffer().
+ *)
+ internal_buffer: pointer;
+
+ (**
+ * Global quality for codecs which cannot change it per frame.
+ * This should be proportional to MPEG-1/2/4 qscale.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ global_quality: cint;
+
+ (**
+ * coder type
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ coder_type: cint;
+
+ (**
+ * context model
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ context_model: cint;
+
+ {
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ realloc: function (s: PAVCodecContext; buf: Pbyte; buf_size: cint): Pbyte; cdecl;
+ }
+
+ (**
+ * slice flags
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ slice_flags: cint;
+
+ (**
+ * XVideo Motion Acceleration
+ * - encoding: forbidden
+ * - decoding: set by decoder
+ *)
+ xvmc_acceleration: cint;
+
+ (**
+ * macroblock decision mode
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_decision: cint;
+
+ (**
+ * custom intra quantization matrix
+ * - encoding: Set by user, can be NULL.
+ * - decoding: Set by libavcodec.
+ *)
+ intra_matrix: PWord;
+
+ (**
+ * custom inter quantization matrix
+ * - encoding: Set by user, can be NULL.
+ * - decoding: Set by libavcodec.
+ *)
+ inter_matrix: PWord;
+
+ (**
+ * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * This is used to work around some encoder bugs.
+ * - encoding: unused
+ * - decoding: Set by user, will be converted to uppercase by libavcodec during init.
+ *)
+ stream_codec_tag: array [0..3] of AnsiChar; //cuint;
+
+ (**
+ * scene change detection threshold
+ * 0 is default, larger means fewer detected scene changes.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ scenechange_threshold: cint;
+
+ (**
+ * minimum Lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lmin: cint;
+
+ (**
+ * maximum Lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lmax: cint;
+
+{$IF FF_API_PALETTE_CONTROL}
+ (**
+ * palette control structure
+ * - encoding: ??? (no palette-enabled encoder yet)
+ * - decoding: Set by user.
+ *)
+ palctrl: PAVPaletteControl;
+{$IFEND}
+
+ (**
+ * noise reduction strength
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ noise_reduction: cint;
+
+ (**
+ * Called at the beginning of a frame to get cr buffer for it.
+ * Buffer type (size, hints) must be the same. libavcodec won't check it.
+ * libavcodec will pass previous buffer in pic, function should return
+ * same buffer or new buffer with old frame "painted" into it.
+ * If pic.data[0] == NULL must behave like get_buffer().
+ * if CODEC_CAP_DR1 is not set then reget_buffer() must call
+ * avcodec_default_reget_buffer() instead of providing buffers allocated by
+ * some other means.
+ * - encoding: unused
+ * - decoding: Set by libavcodec, user can override
+ *)
+ reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): cint; cdecl;
+
+ (**
+ * Number of bits which should be loaded into the rc buffer before decoding starts.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ rc_initial_buffer_occupancy: cint;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ inter_threshold: cint;
+
+ (**
+ * CODEC_FLAG2_*
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ flags2: cint;
+
+ (**
+ * Simulates errors in the bitstream to test error concealment.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ error_rate: cint;
+
+{$IF FF_API_ANTIALIAS_ALGO}
+ (**
+ * MP3 antialias algorithm, see FF_AA_* below.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ antialias_algo: cint; {deprecated}
+{$IFEND}
+
+ (**
+ * quantizer noise shaping
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ quantizer_noise_shaping: cint;
+
+ (**
+ * thread count
+ * is used to decide how many independent tasks should be passed to execute()
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ thread_count: cint;
+
+ (**
+ * The codec may call this to execute several independent things.
+ * It will return only after finishing all tasks.
+ * The user may replace this with some multithreaded implementation,
+ * the default implementation will execute the parts serially.
+ * @param count the number of things to execute
+ * - encoding: Set by libavcodec, user can override.
+ * - decoding: Set by libavcodec, user can override.
+ *)
+ execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: Pointer; ret: PCint; count: cint; size: cint): cint; cdecl;
+
+ (**
+ * thread opaque
+ * Can be used by execute() to store some per AVCodecContext stuff.
+ * - encoding: set by execute()
+ * - decoding: set by execute()
+ *)
+ thread_opaque: pointer;
+
+ (**
+ * Motion estimation threshold below which no motion estimation is
+ * performed, but instead the user specified motion vectors are used.
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_threshold: cint;
+
+ (**
+ * Macroblock threshold below which the user specified macroblock types will be used.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_threshold: cint;
+
+ (**
+ * precision of the intra DC coefficient - 8
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ intra_dc_precision: cint;
+
+ (**
+ * noise vs. sse weight for the nsse comparsion function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ nsse_weight: cint;
+
+ (**
+ * Number of macroblock rows at the top which are skipped.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_top: cint;
+
+ (**
+ * Number of macroblock rows at the bottom which are skipped.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_bottom: cint;
+
+ (**
+ * profile
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ profile: cint;
+
+ (**
+ * level
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ level: cint;
+
+ (**
+ * low resolution decoding, 1-> 1/2 size, 2->1/4 size
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ lowres: cint;
+
+ (**
+ * Bitstream width / height, may be different from width/height if lowres
+ * or other things are used.
+ * - encoding: unused
+ * - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
+ *)
+ coded_width, coded_height: cint;
+
+ (**
+ * frame skip threshold
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_threshold: cint;
+
+ (**
+ * frame skip factor
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_factor: cint;
+
+ (**
+ * frame skip exponent
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_exp: cint;
+
+ (**
+ * frame skip comparison function
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ frame_skip_cmp: cint;
+
+ (**
+ * Border processing masking, raises the quantizer for mbs on the borders
+ * of the picture.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ border_masking: cfloat;
+
+ (**
+ * minimum MB lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_lmin: cint;
+
+ (**
+ * maximum MB lagrange multipler
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mb_lmax: cint;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ me_penalty_compensation: cint;
+
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_loop_filter: TAVDiscard;
+
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_idct: TAVDiscard;
+
+ (**
+ *
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ skip_frame: TAVDiscard;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ bidir_refine: cint;
+
+ (**
+ *
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ brd_scale: cint;
+
+ (**
+ * constant rate factor - quality-based VBR - values ~correspond to qps
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ crf: cfloat;
+
+ (**
+ * constant quantization parameter rate control method
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ cqp: cint;
+
+ (**
+ * minimum GOP size
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ keyint_min: cint;
+
+ (**
+ * number of reference frames
+ * - encoding: Set by user.
+ * - decoding: Set by lavc.
+ *)
+ refs: cint;
+
+ (**
+ * chroma qp offset from luma
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ chromaoffset: cint;
+
+ (**
+ * Influences how often B-frames are used.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ bframebias: cint;
+
+ (**
+ * trellis RD quantization
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ trellis: cint;
+
+ (**
+ * Reduce fluctuations in qp (before curve compression).
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ complexityblur: cfloat;
+
+ (**
+ * in-loop deblocking filter alphac0 parameter
+ * alpha is in the range -6...6
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ deblockalpha: cint;
+
+ (**
+ * in-loop deblocking filter beta parameter
+ * beta is in the range -6...6
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ deblockbeta: cint;
+
+ (**
+ * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ partitions: cint;
+
+ (**
+ * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ directpred: cint;
+
+ (**
+ * Audio cutoff bandwidth (0 means "automatic")
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ cutoff: cint;
+
+ (**
+ * Multiplied by qscale for each frame and added to scene_change_score.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ scenechange_factor: cint;
+
+ (**
+ *
+ * Note: Value depends upon the compare function used for fullpel ME.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ mv0_threshold: cint;
+
+ (**
+ * Adjusts sensitivity of b_frame_strategy 1.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ b_sensitivity: cint;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ compression_level: cint;
+
+{$IF FF_API_USE_LPC}
+ (**
+ * Sets whether to use LPC mode - used by FLAC encoder.
+ * - encoding: Set by user.
+ * - decoding: unused
+ * @deprecated Deprecated in favor of lpc_type and lpc_passes.
+ *)
+ use_lpc: cint;
+
+ (**
+ * LPC coefficient precision - used by FLAC encoder
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ lpc_coeff_precision: cint;
+{$IFEND}
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ min_prediction_order: cint;
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_prediction_order: cint;
+
+{$IF FF_API_FLAC_GLOBAL_OPTS}
+ (**
+ * search method for selecting prediction order
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ prediction_order_method: cint; {deprecated}
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ min_partition_order: cint; {deprecated}
+
+ (**
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ max_partition_order: cint; {deprecated}
+{$IFEND}
+
+ (**
+ * GOP timecode frame start number, in non drop frame format
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ timecode_frame_start: cint64;
+
+{$IF FF_API_REQUEST_CHANNELS}
+ (**
+ * Decoder should decode to this many channels if it can (0 for default)
+ * - encoding: unused
+ * - decoding: Set by user.
+ * @deprecated Deprecated in favor of request_channel_layout.
+ *)
+ request_channels: cint;
+{$IFEND}
+
+ (**
+ * Percentage of dynamic range compression to be applied by the decoder.
+ * The default value is 1.0, corresponding to full compression.
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ drc_scale: cfloat;
+
+ (**
+ * opaque 64bit number (generally a PTS) that will be reordered and
+ * output in AVFrame.reordered_opaque
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ reordered_opaque: cint64;
+
+ (**
+ * Bits per sample/pixel of internal libavcodec pixel/sample format.
+ * This field is applicable only when sample_fmt is SAMPLE_FMT_S32.
+ * - encoding: set by user.
+ * - decoding: set by libavcodec.
+ *)
+ bits_per_raw_sample: cint;
+
+ (**
+ * Audio channel layout.
+ * - encoding: set by user.
+ * - decoding: set by libavcodec.
+ *)
+ channel_layout: cint64;
+
+ (**
+ * Request decoder to use this channel layout if it can (0 for default)
+ * - encoding: unused
+ * - decoding: Set by user.
+ *)
+ request_channel_layout: cint64;
+
+ (**
+ * Ratecontrol attempt to use, at maximum, <value> of what can be used without an underflow.
+ * - encoding: Set by user.
+ * - decoding: unused.
+ *)
+ rc_max_available_vbv_use: cfloat;
+
+ (**
+ * Ratecontrol attempt to use, at least, <value> times the amount needed to prevent a vbv overflow.
+ * - encoding: Set by user.
+ * - decoding: unused.
+ *)
+ rc_min_vbv_overflow_use: cfloat;
+
+ (**
+ * Hardware accelerator in use
+ * - encoding: unused.
+ * - decoding: Set by libavcodec
+ *)
+ hwaccel: PAVHWAccel;
+
+ (**
+ * For some codecs, the time base is closer to the field rate than the frame rate.
+ * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration
+ * if no telecine is used ...
+ *
+ * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2.
+ *)
+ ticks_per_frame: cint;
+
+ (**
+ * Hardware accelerator context.
+ * For some hardware accelerators, a global context needs to be
+ * provided by the user. In that case, this holds display-dependent
+ * data FFmpeg cannot instantiate itself. Please refer to the
+ * FFmpeg HW accelerator documentation to know how to fill this
+ * is. e.g. for VA API, this is a struct vaapi_context.
+ * - encoding: unused
+ * - decoding: Set by user
+ *)
+ hwaccel_context: pointer;
+
+ (**
+ * Chromaticity coordinates of the source primaries.
+ * - encoding: Set by user
+ * - decoding: Set by libavcodec
+ *)
+ color_primaries: TAVColorPrimaries;
+
+ (**
+ * Color Transfer Characteristic.
+ * - encoding: Set by user
+ * - decoding: Set by libavcodec
+ *)
+ color_trc: TAVColorTransferCharacteristic;
+
+ (**
+ * YUV colorspace type.
+ * - encoding: Set by user
+ * - decoding: Set by libavcodec
+ *)
+ colorspace: TAVColorSpace;
+
+ (**
+ * MPEG vs JPEG YUV range.
+ * - encoding: Set by user
+ * - decoding: Set by libavcodec
+ *)
+ color_range: TAVColorRange;
+
+ (**
+ * This defines the location of chroma samples.
+ * - encoding: Set by user
+ * - decoding: Set by libavcodec
+ *)
+ chroma_sample_location: TAVChromaLocation;
+
+ (**
+ * 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.
+ * Also see avcodec_thread_init and e.g. the --enable-pthread configure option.
+ * @param c context passed also to func
+ * @param count the number of things to execute
+ * @param arg2 argument passed unchanged to func
+ * @param ret return values of executed functions, must have space for "count" values. May be NULL.
+ * @param func function that will be called count times, with jobnr from 0 to count-1.
+ * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no
+ * two instances of func executing at the same time will have the same threadnr.
+ * @return always 0 currently, but code should handle a future improvement where when any call to func
+ * returns < 0 no further calls to func may be done and < 0 is returned.
+ * - encoding: Set by libavcodec, user can override.
+ * - decoding: Set by libavcodec, user can override.
+ *)
+ execute2: function (c: PAVCodecContext; func: TExecute2Func; arg2: Pointer; ret: Pcint; count: cint): cint; cdecl;
+
+ (**
+ * explicit P-frame weighted prediction analysis method
+ * 0: off
+ * 1: fast blind weighting (one reference duplicate with -1 offset)
+ * 2: smart weighting (full fade detection analysis)
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ weighted_p_pred: cint;
+
+ (**
+ * AQ mode
+ * 0: Disabled
+ * 1: Variance AQ (complexity mask)
+ * 2: Auto-variance AQ (experimental)
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ aq_mode: cint;
+
+ (**
+ * AQ strength
+ * Reduces blocking and blurring in flat and textured areas.
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ aq_strength: cfloat;
+
+ (**
+ * PSY RD
+ * Strength of psychovisual optimization
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ psy_rd: cfloat;
+
+ (**
+ * PSY trellis
+ * Strength of psychovisual optimization
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ psy_trellis: cfloat;
+
+ (**
+ * RC lookahead
+ * Number of frames for frametype and ratecontrol lookahead
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ rc_lookahead: cint;
+
+ (**
+ * Constant rate factor maximum
+ * With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse
+ * than crf_max, even if doing so would violate VBV restrictions.
+ * - encoding: Set by user.
+ * - decoding: unused
+ *)
+ crf_max: cfloat;
+
+ log_level_offset: cint;
+
+{$IF FF_API_FLAC_GLOBAL_OPTS}
+ (**
+ * Determines which LPC analysis algorithm to use.
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ lpc_type: TAVLPCType; {deprecated}
+
+ (**
+ * Number of passes to use for Cholesky factorization during LPC analysis
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ lpc_passes: cint; {deprecated}
+{$IFEND}
+
+ (**
+ * Number of slices.
+ * Indicates number of picture subdivisions. Used for parallelized
+ * decoding.
+ * - encoding: Set by user
+ * - decoding: unused
+ *)
+ slices: cint;
+
+ (**
+ * Header containing style information for text subtitles.
+ * For SUBTITLE_ASS subtitle type, it should contain the whole ASS
+ * [Script Info] and [V4+ Styles] section, plus the [Events] line and
+ * the Format line following. It shouldn't include any Dialogue line.
+ * - encoding: Set/allocated/freed by user (before avcodec_open())
+ * - decoding: Set/allocated/freed by libavcodec (by avcodec_open())
+ *)
+ subtitle_header: Pcuint8;
+ subtitle_header_size: cint;
+
+ (**
+ * Current packet as passed into the decoder, to avoid having
+ * to pass the packet into every function. Currently only valid
+ * inside lavc and get/release_buffer callbacks.
+ * - decoding: set by avcodec_decode_*, read by get_buffer() for setting pkt_pts
+ * - encoding: unused
+ *)
+ pkt: PAVPacket;
+
+ (**
+ * Whether this is a copy of the context which had init() called on it.
+ * This is used by multithreading - shared tables and picture pointers
+ * should be freed from the original context only.
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ is_copy: cint;
+
+ (**
+ * Which multithreading methods to use.
+ * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread,
+ * so clients which cannot provide future frames should not use it.
+ *
+ * - encoding: Set by user, otherwise the default is used.
+ * - decoding: Set by user, otherwise the default is used.
+ *)
+ thread_type: cint;
+
+ (**
+ * Which multithreading methods are in use by the codec.
+ * - encoding: Set by libavcodec.
+ * - decoding: Set by libavcodec.
+ *)
+ active_thread_type: cint;
+
+ (**
+ * Set by the client if its custom get_buffer() callback can be called
+ * from another thread, which allows faster multithreaded decoding.
+ * draw_horiz_band() will be called from other threads regardless of this setting.
+ * Ignored if the default get_buffer() is used.
+ * - encoding: Set by user.
+ * - decoding: Set by user.
+ *)
+ thread_safe_callbacks: cint;
+
+ (**
+ * VBV delay coded in the last frame (in periods of a 27 MHz clock).
+ * Used for compliant TS muxing.
+ * - encoding: Set by libavcodec.
+ * - decoding: unused.
+ *)
+ vbv_delay: cuint64;
+
+ (**
+ * Type of service that the audio stream conveys.
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ *)
+ audio_service_type: TAVAudioServiceType;
+
+ (**
+ * desired sample format
+ * - encoding: Not used.
+ * - decoding: Set by user.
+ * Decoder will decode to this format if it can.
+ *)
+ request_sample_fmt: TAVSampleFormat;
+
+ (**
+ * Current statistics for PTS correction.
+ * - decoding: maintained and used by libavcodec, not intended to be used by user apps
+ * - encoding: unused
+ *)
+ pts_correction_num_faulty_pts: cint64; /// Number of incorrect PTS values so far
+ pts_correction_num_faulty_dts: cint64; /// Number of incorrect DTS values so far
+ pts_correction_last_pts: cint64; /// PTS of the last frame
+ pts_correction_last_dts: cint64; /// DTS of the last frame
+
+ end; {TAVCodecContext}
+
+ (**
+ * AVProfile.
+ *)
+ PAVProfile = ^TAVProfile;
+ TAVProfile = record
+ profile: cint;
+ name: {const} PAnsiChar; ///< short name for the profile
+ end; {TAVProfile}
+
+(**
+ * AVCodec.
+ *)
+ TAVCodec = record
+ name: PAnsiChar;
+ type_: TAVMediaType;
+ id: TCodecID;
+ priv_data_size: cint;
+ init: function (avctx: PAVCodecContext): cint; cdecl;
+ encode: function (avctx: PAVCodecContext; buf: PByteArray; buf_size: cint; data: pointer): cint; cdecl;
+ close: function (avctx: PAVCodecContext): cint; cdecl;
+ decode: function (avctx: PAVCodecContext; outdata: pointer; var outdata_size: cint; avpkt: PAVPacket): cint; cdecl;
+ (**
+ * Codec capabilities.
+ * see CODEC_CAP_*
+ *)
+ capabilities: cint;
+ next: PAVCodec;
+ (**
+ * Flush buffers.
+ * Will be called when seeking
+ *)
+ flush: procedure (avctx: PAVCodecContext); cdecl;
+ supported_framerates: {const} PAVRational; ///< array of supported framerates, or NULL if any, array is terminated by {0,0}
+ pix_fmts: {const} PAVPixelFormat; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1
+ (**
+ * Descriptive name for the codec, meant to be more human readable than name.
+ * You should use the NULL_IF_CONFIG_SMALL() macro to define it.
+ *)
+ long_name: {const} PAnsiChar;
+ supported_samplerates: {const} PCint; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
+ sample_fmts: {const} PAVSampleFormatArray; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
+ channel_layouts: {const} PCint64; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
+ max_lowres: byte; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
+ priv_class: {const} PAVClass; ///< AVClass for the private context
+ profiles: {const} PAVProfile; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
+
+ (**
+ * @defgroup framethreading Frame-level threading support functions.
+ * @{
+ *)
+ (**
+ * If defined, called on thread contexts when they are created.
+ * If the codec allocates writable tables in init(), re-allocate them here.
+ * priv_data will be set to a copy of the original.
+ *)
+ init_thread_copy: function (avctx: PAVCodecContext): Pcint; cdecl;
+ (**
+ * Copy necessary context variables from a previous thread context to the current one.
+ * If not defined, the next thread will start automatically; otherwise, the codec
+ * must call ff_thread_finish_setup().
+ *
+ * dst and src will (rarely) point to the same context, in which case memcpy should be skipped.
+ *)
+ update_thread_context: function (dst: PAVCodecContext; src: {const} PAVCodecContext): cint; cdecl;
+ (** @} *)
+ end; {TAVCodec}
+
+(**
+ * AVHWAccel.
+ *)
+ TAVHWAccel = record
+ (**
+ * Name of the hardware accelerated codec.
+ * The name is globally unique among encoders and among decoders (but an
+ * encoder and a decoder can share the same name).
+ *)
+ name: PAnsiChar;
+
+ (**
+ * Type of codec implemented by the hardware accelerator.
+ *
+ * See AVMediaType_xxx
+ *)
+ type_: TAVMediaType;
+
+ (**
+ * Codec implemented by the hardware accelerator.
+ *
+ * See CODEC_ID_xxx
+ *)
+ id: TCodecID;
+
+ (**
+ * Supported pixel format.
+ *
+ * Only hardware accelerated formats are supported here.
+ *)
+ pix_fmt: PAVPixelFormat;
+
+ (**
+ * Hardware accelerated codec capabilities.
+ * see FF_HWACCEL_CODEC_CAP_*
+ *)
+ capabilities: cint;
+
+ next: PAVHWAccel;
+
+ (**
+ * Called at the beginning of each frame or field picture.
+ *
+ * Meaningful frame information (codec specific) is guaranteed to
+ * be parsed at this point. This function is mandatory.
+ *
+ * Note that buf can be NULL along with buf_size set to 0.
+ * Otherwise, this means the whole frame is available at this point.
+ *
+ * @param avctx the codec context
+ * @param buf the frame data buffer base
+ * @param buf_size the size of the frame in bytes
+ * @return zero if successful, a negative value otherwise
+ *)
+ start_frame: function (avctx: PAVCodecContext;
+ buf: {const} PByteArray;
+ buf_size: cuint): cint; cdecl;
+
+ (**
+ * Callback for each slice.
+ *
+ * Meaningful slice information (codec specific) is guaranteed to
+ * be parsed at this point. This function is mandatory.
+ *
+ * @param avctx the codec context
+ * @param buf the slice data buffer base
+ * @param buf_size the size of the slice in bytes
+ * @return zero if successful, a negative value otherwise
+ *)
+ decode_slice: function (avctx: PAVCodecContext;
+ buf: {const} PByteArray;
+ buf_size: cuint): cint; cdecl;
+
+ (**
+ * Called at the end of each frame or field picture.
+ *
+ * The whole picture is parsed at this point and can now be sent
+ * to the hardware accelerator. This function is mandatory.
+ *
+ * @param avctx the codec context
+ * @return zero if successful, a negative value otherwise
+ *)
+ end_frame: function (avctx: PAVCodecContext): cint; cdecl;
+
+ (**
+ * Size of HW accelerator private data.
+ *
+ * Private data is allocated with av_mallocz() before
+ * AVCodecContext.get_buffer() and deallocated after
+ * AVCodecContext.release_buffer().
+ *)
+ priv_data_size: cint;
+ end; {TAVHWAccel}
+
+(**
+ * four components are given, that's all.
+ * the last component is alpha
+ *)
+ PAVPicture = ^TAVPicture;
+ TAVPicture = record
+ data: array [0..3] of PByteArray;
+ linesize: array [0..3] of cint; ///< number of bytes per line
+ end; {TAVPicture}
+
+ TAVSubtitleType = (
+ SUBTITLE_NONE,
+
+ SUBTITLE_BITMAP, ///< A bitmap, pict will be set
+
+ (**
+ * Plain text, the text field must be set by the decoder and is
+ * authoritative. ass and pict fields may contain approximations.
+ *)
+ SUBTITLE_TEXT,
+
+ (**
+ * Formatted text, the ass field must be set by the decoder and is
+ * authoritative. pict and text fields may contain approximations.
+ *)
+ SUBTITLE_ASS
+ ); {TAVSubtitleType}
+
+ PPAVSubtitleRect = ^PAVSubtitleRect;
+ PAVSubtitleRect = ^TAVSubtitleRect;
+ TAVSubtitleRect = record
+ x: cint; ///< top left corner of pict, undefined when pict is not set
+ y: cint; ///< top left corner of pict, undefined when pict is not set
+ w: cint; ///< width of pict, undefined when pict is not set
+ h: cint; ///< height of pict, undefined when pict is not set
+ nb_colors: cint; ///< number of colors in pict, undefined when pict is not set
+
+ (**
+ * data+linesize for the bitmap of this subtitle.
+ * can be set for text/ass as well once they where rendered
+ *)
+ pict: TAVPicture;
+ type_: TAVSubtitleType;
+
+ text: PAnsiChar; ///< 0 terminated plain UTF-8 text
+
+ (**
+ * 0 terminated ASS/SSA compatible event line.
+ * The pressentation of this is unaffected by the other values in this
+ * struct.
+ *)
+ ass: PAnsiChar;
+ end; {TAVSubtitleRect}
+
+ PPAVSubtitle = ^PAVSubtitle;
+ PAVSubtitle = ^TAVSubtitle;
+ TAVSubtitle = record
+ format: cuint16; (* 0 = graphics *)
+ start_display_time: cuint32; (* relative to packet pts, in ms *)
+ end_display_time: cuint32; (* relative to packet pts, in ms *)
+ num_rects: cuint;
+ rects: PPAVSubtitleRect;
+ pts: cint64; ///< Same as packet pts, in AV_TIME_BASE
+ end; {TAVSubtitle}
+
+(* packet functions *)
+
+(**
+ * @deprecated use NULL instead
+ *)
+procedure av_destruct_packet_nofree(pkt: PAVPacket);
+ cdecl; external av__codec; deprecated;
+
+(*
+ * Default packet destructor.
+ *)
+procedure av_destruct_packet(pkt: PAVPacket);
+ cdecl; external av__codec;
+
+(*
+ * Initialize optional fields of a packet with default values.
+ *
+ * @param pkt packet
+ *)
+procedure av_init_packet(var pkt: TAVPacket);
+ cdecl; external av__codec;
+
+(*
+ * Allocate the payload of a packet and initialize its fields with
+ * default values.
+ *
+ * @param pkt packet
+ * @param size wanted payload size
+ * @return 0 if OK, AVERROR_xxx otherwise
+ *)
+function av_new_packet(pkt: PAVPacket; size: cint): cint;
+ cdecl; external av__codec;
+
+(*
+ * Reduce packet size, correctly zeroing padding
+ *
+ * @param pkt packet
+ * @param size new size
+ *)
+procedure av_shrink_packet(pkt: PAVPacket; size: cint);
+ cdecl; external av__codec;
+
+(*
+ * @warning This is a hack - the packet memory allocation stuff is broken. The
+ * packet is allocated if it was not really allocated.
+ *)
+function av_dup_packet(pkt: PAVPacket): cint;
+ cdecl; external av__codec;
+
+(*
+ * Free a packet.
+ *
+ * @param pkt packet to free
+ *)
+procedure av_free_packet(pkt: PAVPacket);
+ cdecl; external av__codec;
+
+(* resample.c *)
+type
+ PReSampleContext = pointer;
+ PAVResampleContext = pointer;
+ PImgReSampleContext = pointer;
+
+{$IF FF_API_AUDIO_OLD}
+(**
+ * @deprecated Use av_audio_resample_init() instead.
+ *)
+function audio_resample_init (output_channels: cint; input_channels: cint;
+ output_rate: cint; input_rate: cint): PReSampleContext;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Initialize audio resampling context.
+ *
+ * @param output_channels number of output channels
+ * @param input_channels number of input channels
+ * @param output_rate output sample rate
+ * @param input_rate input sample rate
+ * @param sample_fmt_out requested output sample format
+ * @param sample_fmt_in input sample format
+ * @param filter_length length of each FIR filter in the filterbank relative to the cutoff frequency
+ * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
+ * @param linear if 1 then the used FIR filter will be linearly interpolated
+ between the 2 closest, if 0 the closest will be used
+ * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
+ * @return allocated ReSampleContext, NULL if error occured
+ *)
+ function av_audio_resample_init(output_channels: cint; input_channels: cint;
+ output_rate: cint; input_rate: cint;
+ sample_fmt_out: TAVSampleFormat;
+ sample_fmt_in: TAVSampleFormat;
+ filter_length: cint; log2_phase_count: cint;
+ linear: cint; cutoff: cdouble): PReSampleContext;
+ cdecl; external av__codec;
+
+function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Free resample context.
+ *
+ * @param s a non-NULL pointer to a resample context previously
+ * created with av_audio_resample_init()
+ *)
+procedure audio_resample_close (s: PReSampleContext);
+ cdecl; external av__codec;
+
+(**
+ * Initialize an audio resampler.
+ * Note, if either rate is not an integer then simply scale both rates up so they are.
+ * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq
+ * @param log2_phase_count log2 of the number of entries in the polyphase filterbank
+ * @param linear If 1 then the used FIR filter will be linearly interpolated
+ between the 2 closest, if 0 the closest will be used
+ * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate
+ *)
+function av_resample_init (out_rate: cint; in_rate: cint; filter_length: cint;
+ log2_phase_count: cint; linear: cint; cutoff: cdouble): PAVResampleContext;
+ cdecl; external av__codec;
+
+(**
+ * Resample an array of samples using a previously configured context.
+ * @param src an array of unconsumed samples
+ * @param consumed the number of samples of src which have been consumed are returned here
+ * @param src_size the number of unconsumed samples available
+ * @param dst_size the amount of space in samples available in dst
+ * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context.
+ * @return the number of samples written in dst or -1 if an error occurred
+ *)
+function av_resample (c: PAVResampleContext; dst: PSmallint; src: PSmallint; var consumed: cint;
+ src_size: cint; dst_size: cint; update_ctx: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Compensate samplerate/timestamp drift. The compensation is done by changing
+ * the resampler parameters, so no audible clicks or similar distortions occur
+ * @param compensation_distance distance in output samples over which the compensation should be performed
+ * @param sample_delta number of output samples which should be output less
+ *
+ * example: av_resample_compensate(c, 10, 500)
+ * here instead of 510 samples only 500 samples would be output
+ *
+ * note, due to rounding the actual compensation might be slightly different,
+ * especially if the compensation_distance is large and the in_rate used during init is small
+ *)
+procedure av_resample_compensate (c: PAVResampleContext; sample_delta: cint;
+ compensation_distance: cint);
+ cdecl; external av__codec;
+
+procedure av_resample_close (c: PAVResampleContext);
+ cdecl; external av__codec;
+
+(**
+ * Allocate memory for a picture. Call avpicture_free to free it.
+ *
+ * @param picture the picture to be filled in.
+ * @param pix_fmt the format of the picture.
+ * @param width the width of the picture.
+ * @param height the height of the picture.
+ * @return Zero if successful, a negative value if not.
+ *)
+function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat;
+ width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Free a picture previously allocated by avpicture_alloc().
+ *
+ * @param picture the AVPicture to be freed
+ *)
+procedure avpicture_free (picture: PAVPicture);
+ cdecl; external av__codec;
+
+(**
+ * Fill in the AVPicture fields.
+ * The fields of the given AVPicture are filled in by using the 'ptr' address
+ * which points to the image data buffer. Depending on the specified picture
+ * format, one or multiple image data pointers and line sizes will be set.
+ * If a planar format is specified, several pointers will be set pointing to
+ * the different picture planes and the line sizes of the different planes
+ * will be stored in the lines_sizes array.
+ * Call with ptr == NULL to get the required size for the ptr buffer.
+ *
+ * @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: pcuint8;
+ pix_fmt: TAVPixelFormat; width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Copy pixel data from an AVPicture into a buffer.
+ * The data is stored compactly, without any gaps for alignment or padding
+ * which may be applied by avpicture_fill().
+ *
+ * \see avpicture_get_size()
+ *
+ * @param[in] src AVPicture containing image data
+ * @param[in] pix_fmt The format in which the picture data is stored.
+ * @param[in] width the width of the image in pixels.
+ * @param[in] height the height of the image in pixels.
+ * @param[out] dest A buffer into which picture data will be copied.
+ * @param[in] dest_size The size of 'dest'.
+ * @return The number of bytes written to dest, or a negative value (error code) on error.
+ *)
+function avpicture_layout (src: {const} PAVPicture; pix_fmt: TAVPixelFormat;
+ width: cint; height: cint;
+ dest: PByteArray; dest_size: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Calculate the size in bytes that a picture of the given width and height
+ * would occupy if stored in the given picture format.
+ * Note that this returns the size of a compact representation as generated
+ * by avpicture_layout, which can be smaller than the size required for e.g.
+ * avpicture_fill.
+ *
+ * @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 or -1 on error (e.g. too large dimensions).
+ *)
+function avpicture_get_size (pix_fmt: TAVPixelFormat; width: cint; height: cint): cint;
+ cdecl; external av__codec;
+
+procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; var h_shift: cint; var v_shift: cint);
+ cdecl; external av__codec;
+
+{$IF FF_API_GET_PIX_FMT_NAME}
+(**
+ * Return the short name for a pixel format.
+ *
+ * \see av_get_pix_fmt(), av_get_pix_fmt_string().
+ * @deprecated Deprecated in favor of av_get_pix_fmt_name().
+ *)
+function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): PAnsiChar;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+procedure avcodec_set_dimensions(s: PAVCodecContext; width: cint; height: cint);
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
+(**
+ * Return the pixel format corresponding to the name name.
+ *
+ * If there is no pixel format with name name, then looks for a
+ * pixel format with the name corresponding to the native endian
+ * format of name.
+ * For example in a little-endian system, first looks for "gray16",
+ * then for "gray16le".
+ *
+ * Finally if no pixel format has been found, returns PIX_FMT_NONE.*
+ * @deprecated Deprecated in favor of av_get_pix_fmt().
+ *)
+function avcodec_get_pix_fmt(name: {const} PAnsiChar): TAVPixelFormat;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Return a value representing the fourCC code associated to the
+ * pixel format pix_fmt, or 0 if no associated fourCC code can be
+ * found.
+ *)
+function avcodec_pix_fmt_to_codec_tag(pix_fmt: TAVPixelFormat): cuint;
+ cdecl; external av__codec;
+
+(**
+ * Put a string representing the codec tag codec_tag in buf.
+ *
+ * @param buf_size size in bytes of buf
+ * @return the length of the string that would have been generated if
+ * enough space had been available, excluding the trailing null
+ *)
+function av_get_codec_tag_string(buf: PAnsiChar; buf_size: size_t; codec_tag: cuint): size_t;
+ 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) *}
+
+(**
+ * Compute what kind of losses will occur when converting from one specific
+ * pixel format to another.
+ * When converting from one pixel format to another, information loss may occur.
+ * For example, when converting from RGB24 to GRAY, the color information will
+ * be lost. Similarly, other losses occur when converting from some formats to
+ * other formats. These losses can involve loss of chroma, but also loss of
+ * resolution, loss of color depth, loss due to the color space conversion, loss
+ * of the alpha bits or loss due to color quantization.
+ * avcodec_get_fix_fmt_loss() informs you about the various types of losses
+ * which will occur when converting from one pixel format to another.
+ *
+ * @param[in] dst_pix_fmt destination pixel format
+ * @param[in] src_pix_fmt source pixel format
+ * @param[in] has_alpha Whether the source pixel format alpha channel is used.
+ * @return Combination of flags informing you what kind of losses will occur.
+ *)
+function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat;
+ has_alpha: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Find 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
+ * 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: cint64; src_pix_fmt: TAVPixelFormat;
+ has_alpha: cint; loss_ptr: PCint): TAVPixelFormat;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION_MAJOR < 53}
+(**
+ * @deprecated Use av_get_pix_fmt_string() instead.
+ *)
+procedure avcodec_pix_fmt_string (buf: PAnsiChar; buf_size: cint; pix_fmt: TAVPixelFormat);
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+const
+ FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *}
+ FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *}
+
+(**
+ * Tell if an image really has transparent alpha values.
+ * @return ored mask of FF_ALPHA_xxx constants
+ *)
+function img_get_alpha_info (src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat;
+ width: cint;
+ height: cint): cint;
+ cdecl; external av__codec;
+
+(* deinterlace a picture *)
+(* deinterlace - if not supported return -1 *)
+function avpicture_deinterlace (dst: PAVPicture;
+ src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat;
+ width: cint;
+ height: cint): cint;
+ cdecl; external av__codec;
+
+(* external high level API *)
+
+(**
+ * If c is NULL, returns the first registered codec,
+ * if c is non-NULL, returns the next registered codec after c,
+ * or NULL if c is the last one.
+ *)
+function av_codec_next(c: PAVCodec): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Return the LIBAVCODEC_VERSION_INT constant.
+ *)
+function avcodec_version(): cuint;
+ cdecl; external av__codec;
+
+(**
+ * Return the libavcodec build-time configuration.
+ *)
+function avcodec_configuration(): PAnsiChar;
+ cdecl; external av__codec;
+
+(**
+ * Return the libavcodec license.
+ *)
+function avcodec_license(): PAnsiChar;
+ cdecl; external av__codec;
+
+(**
+ * Initialize libavcodec.
+ *
+ * @warning This function must be called before any other libavcodec
+ * function.
+ *
+ * @warning This function is not thread-safe.
+ *)
+procedure avcodec_init();
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION_MAJOR < 53}
+(**
+ * @deprecated Deprecated in favor of avcodec_register().
+ *)
+procedure register_avcodec(codec: PAVCodec);
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Register the codec codec and initialize libavcodec.
+ *
+ * @see avcodec_init(), avcodec_register_all()
+ *)
+procedure avcodec_register(codec: PAVCodec);
+ cdecl; external av__codec;
+
+(**
+ * Find 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;
+
+(**
+ * Find 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: PAnsiChar): PAVCodec;
+ cdecl; external av__codec;
+
+(**
+ * Find 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;
+
+(**
+ * Find 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: PAnsiChar): PAVCodec;
+ cdecl; external av__codec;
+procedure avcodec_string(buf: PAnsiChar; buf_size: cint; enc: PAVCodecContext; encode: cint);
+ cdecl; external av__codec;
+
+(**
+ * Return a name for the specified profile, if available.
+ *
+ * @param codec the codec that is searched for the given profile
+ * @param profile the profile value for which a name is requested
+ * @return A name for the profile if found, NULL otherwise.
+ *)
+function av_get_profile_name(codec: {const} PAVCodec; profile: cint): {const} PAnsiChar;
+ cdecl; external av__codec;
+
+(**
+ * Set 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;
+
+(** 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: TAVMediaType);
+ cdecl; external av__codec;
+
+(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
+ * we WILL change its arguments and name a few times! *)
+procedure avcodec_get_context_defaults3(s: PAVCodecContext; codec: PAVCodec);
+ cdecl; external av__codec;
+
+(**
+ * Allocate an AVCodecContext and sets it 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;
+
+(** 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: TAVMediaType): PAVCodecContext;
+ cdecl; external av__codec;
+
+(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
+ * we WILL change its arguments and name a few times! *)
+function avcodec_alloc_context3(codec: PAVCodec): PAVCodecContext;
+ cdecl; external av__codec;
+
+(**
+ * Copy the settings of the source AVCodecContext into the destination
+ * AVCodecContext. The resulting destination codec context will be
+ * unopened, i.e. you are required to call avcodec_open() before you
+ * can use this AVCodecContext to decode/encode video/audio data.
+ *
+ * @param dest target codec context, should be initialized with
+ * avcodec_alloc_context(), but otherwise uninitialized
+ * @param src source codec context
+ * @return AVERROR() on error (e.g. memory allocation error), 0 on success
+ *)
+function avcodec_copy_context(dest: PAVCodecContext; src: {const} PAVCodecContext): cint;
+ cdecl; external av__codec;
+
+(**
+ * Set 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;
+
+(**
+ * Allocate an AVFrame and set its fields to default values. The resulting
+ * struct can be deallocated by simply calling av_free().
+ *
+ * @return An AVFrame filled with default values or NULL on failure.
+ * @see avcodec_get_frame_defaults
+ *)
+function avcodec_alloc_frame(): PAVFrame;
+ cdecl; external av__codec;
+
+function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): cint;
+ cdecl; external av__codec;
+procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame);
+ cdecl; external av__codec;
+function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): cint;
+ cdecl; external av__codec;
+
+(**
+ * Return the amount of padding in pixels which the get_buffer callback must
+ * provide around the edge of the image for codecs which do not have the
+ * CODEC_FLAG_EMU_EDGE flag.
+ *
+ * @return Required padding in pixels.
+ *)
+function avcodec_get_edge_width(): cuint;
+ cdecl; external av__codec;
+
+(**
+ * Modify width and height values so that they will result in a memory
+ * buffer that is acceptable for the codec if you do not use any horizontal
+ * padding.
+ *
+ * May only be used if a codec with CODEC_CAP_DR1 has been opened.
+ * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
+ * according to avcodec_get_edge_width() before.
+ *)
+procedure avcodec_align_dimensions(s: PAVCodecContext; width: PCint; height: PCint);
+ cdecl; external av__codec;
+
+(**
+ * Modifiy width and height values so that they will result in a memory
+ * buffer that is acceptable for the codec if you also ensure that all
+ * line sizes are a multiple of the respective linesize_align[i].
+ *
+ * May only be used if a codec with CODEC_CAP_DR1 has been opened.
+ * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased
+ * according to avcodec_get_edge_width() before.
+ *)
+procedure avcodec_align_dimensions2(s: PAVCodecContext; width: PCint; height: PCint;
+ linesize_align: PQuadIntArray);
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION_MAJOR < 53}
+(**
+ * @deprecated Deprecated in favor of av_check_image_size().
+ *)
+function avcodec_check_dimensions(av_log_ctx: pointer; w: cuint; h: cuint): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+function avcodec_default_get_format(s: PAVCodecContext; fmt: {const} PAVPixelFormat): TAVPixelFormat;
+ cdecl; external av__codec;
+
+{$IF FF_API_THREAD_INIT}
+(**
+ * @deprecated Set s->thread_count before calling avcodec_open() instead of calling this.
+ *)
+function avcodec_thread_init(s: PAVCodecContext; thread_count: cint): cint;
+ cdecl; external av__codec; deprecated;
+procedure avcodec_thread_free(s: PAVCodecContext);
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+function avcodec_default_execute(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint; size: cint): cint;
+ cdecl; external av__codec;
+
+function avcodec_default_execute2(s: PAVCodecContext; func: TExecuteFunc; arg: Pointer; var ret: cint; count: cint): cint;
+ cdecl; external av__codec;
+//FIXME func typedef
+
+(**
+ * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
+ * function the context has to be allocated.
+ *
+ * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
+ * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
+ * retrieving a codec.
+ *
+ * @warning This function is not thread safe!
+ *
+ * @code
+ * avcodec_register_all();
+ * codec = avcodec_find_decoder(CODEC_ID_H264);
+ * if (!codec)
+ * exit(1);
+ *
+ * context = avcodec_alloc_context();
+ *
+ * if (avcodec_open(context, codec) < 0)
+ * exit(1);
+ * @endcode
+ *
+ * @param avctx The context which will be set up to use the given codec.
+ * @param codec The codec to use within the context.
+ * @return zero on success, a negative value on error
+ * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder
+ *)
+function avcodec_open(avctx: PAVCodecContext; codec: PAVCodec): cint;
+ cdecl; external av__codec;
+
+
+{$IF FF_API_AUDIO_OLD}
+(**
+ * Decode an audio frame from buf into samples.
+ * Wrapper function which calls avcodec_decode_audio3.
+ *
+ * @deprecated Use avcodec_decode_audio3 instead.
+ * @param avctx the codec context
+ * @param[out] samples the output buffer, sample type in avctx->sample_fmt
+ * @param[in,out] frame_size_ptr the output buffer size in bytes
+ * @param[in] buf the input buffer
+ * @param[in] buf_size the input buffer size in bytes
+ * @return On error a negative value is returned, otherwise the number of bytes
+ * used or zero if no frame could be decompressed.
+ *)
+function avcodec_decode_audio2(avctx: PAVCodecContext; samples: PSmallint;
+ var frame_size_ptr: cint;
+ buf: {const} PByteArray; buf_size: cint): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Decode the audio frame of size avpkt->size from avpkt->data into samples.
+ * Some decoders may support multiple frames in a single AVPacket, such
+ * decoders would then just decode the first frame. In this case,
+ * avcodec_decode_audio3 has to be called again with an AVPacket that contains
+ * the remaining data in order to decode the second frame etc.
+ * If no frame
+ * could be outputted, frame_size_ptr is zero. Otherwise, it is the
+ * decompressed frame size in bytes.
+ *
+ * @warning You must set frame_size_ptr to the allocated size of the
+ * output buffer before calling avcodec_decode_audio3().
+ *
+ * @warning The input buffer must be 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 avpkt->data should be set to 0 to ensure that
+ * no overreading happens for damaged MPEG streams.
+ *
+ * @note You might have to align the input buffer avpkt->data and output buffer
+ * 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, avpkt->data should have 4 byte alignment at minimum and
+ * samples should be 16 byte aligned unless the CPU doesn't need it
+ * (AltiVec and SSE do).
+ *
+ * @note Some codecs have a delay between input and output, these need to be
+ * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames.
+ *
+ * @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] avpkt The input AVPacket containing the input buffer.
+ * You can create such packet with av_init_packet() and by then setting
+ * data and size, some decoders might in addition need other fields.
+ * All decoders are designed to use the least fields possible though.
+ * @return On error a negative value is returned, otherwise the number of bytes
+ * used or zero if no frame data was decompressed (used) from the input AVPacket.
+ *)
+function avcodec_decode_audio3(avctx: PAVCodecContext; samples: PSmallint;
+ var frame_size_ptr: cint;
+ avpkt: PAVPacket): cint;
+ cdecl; external av__codec;
+
+{$IF FF_API_VIDEO_OLD}
+(**
+ * Decode a video frame from buf into picture.
+ * Wrapper function which calls avcodec_decode_video2.
+ *
+ * @deprecated Use avcodec_decode_video2 instead.
+ * @param avctx the codec context
+ * @param[out] picture The AVFrame in which the decoded video frame will be stored.
+ * Use avcodec_alloc_frame to get an AVFrame, the codec will
+ * allocate memory for the actual bitmap.
+ * with default get/release_buffer(), the decoder frees/reuses the bitmap as it sees fit.
+ * with overridden get/release_buffer() (needs CODEC_CAP_DR1) the user decides into what buffer the decoder
+ * decodes and the decoder tells the user once it does not need the data anymore,
+ * the user app can at this point free/reuse/keep the memory as it sees fit.
+ *
+ * @param[in] buf the input buffer
+ * @param[in] buf_size the size of the input buffer in bytes
+ * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
+ * @return On error a negative value is returned, otherwise the number of bytes
+ * used or zero if no frame could be decompressed.
+ *)
+function avcodec_decode_video(avctx: PAVCodecContext; picture: PAVFrame;
+ var got_picture_ptr: cint;
+ buf: {const} PByteArray; buf_size: cint): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Decode the video frame of size avpkt->size from avpkt->data into picture.
+ * Some decoders may support multiple frames in a single AVPacket, such
+ * decoders would then just decode the first frame.
+ *
+ * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than
+ * the actual read bytes because some optimized bitstream readers read 32 or 64
+ * bits at once and could read over the end.
+ *
+ * @warning The end of the input buffer buf should be set to 0 to ensure that
+ * no overreading happens for damaged MPEG streams.
+ *
+ * @note You might have to align the input buffer avpkt->data.
+ * The alignment requirements depend on the CPU: on some CPUs it isn't
+ * necessary at all, on others it won't work at all if not aligned and on others
+ * it will work but it will have an impact on performance.
+ *
+ * In practice, avpkt->data should have 4 byte alignment at minimum.
+ *
+ * @param avctx the codec context
+ * @param[out] picture The AVFrame in which the decoded video frame will be stored.
+ * @param[in] avpkt The input AVpacket containing the input buffer.
+ * You can create such packet with av_init_packet() and by then setting
+ * data and size, some decoders might in addition need other fields like
+ * flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least
+ * fields possible.
+ * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero.
+ * @return On error a negative value is returned, otherwise the number of bytes
+ * used or zero if no frame could be decompressed.
+ *)
+function avcodec_decode_video2(avctx: PAVCodecContext; picture: PAVFrame;
+ var got_picture_ptr: cint;
+ avpkt: PAVPacket): cint;
+ cdecl; external av__codec;
+
+{$IF FF_API_SUBTITLE_OLD}
+(* Decode a subtitle message. Return -1 if error, otherwise return the
+ * number of bytes used. If no subtitle could be decompressed,
+ * got_sub_ptr is zero. Otherwise, the subtitle is stored in*sub.
+ *)
+function avcodec_decode_subtitle(avctx: PAVCodecContext; sub: PAVSubtitle;
+ var got_sub_ptr: cint;
+ buf: {const} PByteArray; buf_size: cint): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(* Decode a subtitle message.
+ * Return a negative value on 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.
+ * Note that CODEC_CAP_DR1 is not available for subtitle codecs. This is for
+ * simplicity, because the performance difference is expect to be negligible
+ * and reusing a get_buffer written for video codecs would probably perform badly
+ * due to a potentially very different allocation pattern.
+ *
+ * @param avctx the codec context
+ * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored, must be
+ freed with avsubtitle_free if *got_sub_ptr is set.
+ * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero.
+ * @param[in] avpkt The input AVPacket containing the input buffer.
+ *)
+function avcodec_decode_subtitle2(avctx: PAVCodecContext; sub: PAVSubtitle;
+ var got_sub_ptr: cint;
+ avpkt: PAVPacket): cint;
+ cdecl; external av__codec;
+
+(**
+ * Frees all allocated data in the given subtitle struct.
+ *
+ * @param sub AVSubtitle to free.
+ *)
+procedure avsubtitle_free(sub: PAVSubtitle);
+ cdecl; external av__codec;
+
+function avcodec_parse_frame(avctx: PAVCodecContext; pdata: PPointer;
+ data_size_ptr: PCint;
+ buf: PByteArray; buf_size: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Encode an audio frame from samples into buf.
+ *
+ * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large.
+ * However, for PCM audio the user will know how much space is needed
+ * because it depends on the value passed in buf_size as described
+ * below. In that case a lower value can be used.
+ *
+ * @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 avctx.
+ * For PCM audio the number of samples read from samples is equal to
+ * buf_size * input_sample_size / output_sample_size.
+ * @return On error a negative value is returned, on success zero or the number
+ * of bytes used to encode the data read from the input buffer.
+ *)
+function avcodec_encode_audio(avctx: PAVCodecContext; buf: PByte;
+ buf_size: cint; samples: {const} PSmallint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Encode a video frame from pict into buf.
+ * The input picture should be
+ * stored using a specific format, namely 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 output buffer.
+ *)
+function avcodec_encode_video(avctx: PAVCodecContext; buf: PByte;
+ buf_size: cint; pict: {const} PAVFrame): cint;
+ cdecl; external av__codec;
+function avcodec_encode_subtitle(avctx: PAVCodecContext; buf: PByteArray;
+ buf_size: cint; sub: {const} PAVSubtitle): cint;
+ cdecl; external av__codec;
+
+function avcodec_close(avctx: PAVCodecContext): cint;
+ cdecl; external av__codec;
+
+(**
+ * Register all the codecs, parsers and bitstream filters which were enabled at
+ * configuration time. If you do not call this function you can select exactly
+ * which formats you want to support, by using the individual registration
+ * functions.
+ *
+ * @see register_avcodec
+ * @see avcodec_register
+ * @see av_register_codec_parser
+ * @see av_register_bitstream_filter
+ *)
+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 *)
+
+{$IF FF_API_OLD_FF_PICT_TYPES}
+(**
+ * Return a single letter to describe the given picture type pict_type.
+ *
+ * @param[in] pict_type the picture type
+ * @return A single character representing the picture type.
+ * @deprecated Use av_get_picture_type_char() instead.
+ *)
+function av_get_pict_type_char(pict_type: cint): AnsiChar;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Return codec bits per sample.
+ *
+ * @param[in] codec_id the codec
+ * @return Number of bits per sample or zero if unknown for the given codec.
+ *)
+function av_get_bits_per_sample(codec_id: TCodecID): cint;
+ cdecl; external av__codec;
+
+{$IF FF_API_OLD_SAMPLE_FMT}
+(**
+ * @deprecated Use av_get_bits_per_sample_fmt() instead.
+ *)
+function av_get_bits_per_sample_format(sample_fmt: TAVSampleFormat): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+const
+ AV_PARSER_PTS_NB = 4;
+ PARSER_FLAG_COMPLETE_FRAMES = $0001;
+ PARSER_FLAG_ONCE = $0002;
+/// Set if the parser has a valid file offset
+ PARSER_FLAG_FETCHED_OFFSET = $0004;
+
+type
+ (* frame parsing *)
+ PAVCodecParserContext = ^TAVCodecParserContext;
+ PAVCodecParser = ^TAVCodecParser;
+
+ TAVCodecParserContext = record
+ priv_data: pointer;
+ parser: PAVCodecParser;
+ frame_offset: cint64; (* offset of the current frame *)
+ cur_offset: cint64; (* current offset (incremented by each av_parser_parse()) *)
+ next_frame_offset: cint64; (* offset of the next frame *)
+ (* video info *)
+ pict_type: cint; (* XXX: put it back in AVCodecContext *)
+ (**
+ * This field is used for proper frame duration computation in lavf.
+ * It signals, how much longer the frame duration of the current frame
+ * is compared to normal frame duration.
+ *
+ * frame_duration = (1 + repeat_pict) * time_base
+ *
+ * It is used by codecs like H.264 to display telecined material.
+ *)
+ repeat_pict: cint; (* XXX: put it back in AVCodecContext *)
+ pts: cint64; (* pts of the current frame *)
+ dts: cint64; (* dts of the current frame *)
+
+ (* private data *)
+ last_pts: cint64;
+ last_dts: cint64;
+ fetch_timestamp: cint;
+
+ cur_frame_start_index: cint;
+ cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+ cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+ cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+
+ flags: cint;
+
+ offset: cint64; ///< byte offset from starting packet start
+ cur_frame_end: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+
+ (*!
+ * Set by parser to 1 for key frames and 0 for non-key frames.
+ * It is initialized to -1, so if the parser doesn't set this flag,
+ * old-style fallback using FF_I_TYPE picture type as key frames
+ * will be used.
+ *)
+ key_frame: cint;
+
+ (**
+ * Time difference in stream time base units from the pts of this
+ * packet to the point at which the output from the decoder has converged
+ * independent from the availability of previous frames. That is, the
+ * frames are virtually identical no matter if decoding started from
+ * the very first frame or from this keyframe.
+ * Is AV_NOPTS_VALUE if unknown.
+ * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY
+ * set.
+ *
+ * The purpose of this field is to allow seeking in streams that have no
+ * keyframes in the conventional sense. It corresponds to the
+ * recovery point SEI in H.264 and match_time_delta in NUT. It is also
+ * essential for some types of subtitle streams to ensure that all
+ * subtitles are correctly displayed after seeking.
+ *)
+ convergence_duration: cint64;
+
+ // Timestamp generation support:
+ (**
+ * Synchronization point for start of timestamp generation.
+ *
+ * Set to >0 for sync point, 0 for no sync point and <0 for undefined
+ * (default).
+ *
+ * For example, this corresponds to presence of H.264 buffering period
+ * SEI message.
+ *)
+ dts_sync_point: cint;
+
+ (**
+ * Offset of the current timestamp against last timestamp sync point in
+ * units of AVCodecContext.time_base.
+ *
+ * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
+ * contain a valid timestamp offset.
+ *
+ * Note that the timestamp of sync point has usually a nonzero
+ * dts_ref_dts_delta, which refers to the previous sync point. Offset of
+ * the next frame after timestamp sync point will be usually 1.
+ *
+ * For example, this corresponds to H.264 cpb_removal_delay.
+ *)
+ dts_ref_dts_delta: cint;
+
+ (**
+ * Presentation delay of current frame in units of AVCodecContext.time_base.
+ *
+ * Set to INT_MIN when dts_sync_point unused. Otherwise, it must
+ * contain valid non-negative timestamp delta (presentation time of a frame
+ * must not lie in the past).
+ *
+ * This delay represents the difference between decoding and presentation
+ * time of the frame.
+ *
+ * For example, this corresponds to H.264 dpb_output_delay.
+ *)
+ pts_dts_delta: cint;
+
+ (**
+ * Position of the packet in file.
+ *
+ * Analogous to cur_frame_pts/dts
+ *)
+ cur_frame_pos: array [0..AV_PARSER_PTS_NB - 1] of cint64;
+
+ (**
+ * Byte position of currently parsed frame in stream.
+ *)
+ pos: cint64;
+
+ (**
+ * Previous frame byte position.
+ *)
+ last_pos: cint64;
+ end; {AVCodecParserContext}
+
+ TAVCodecParser = record
+ codec_ids: array [0..4] of cint; (* several codec IDs are permitted *)
+ priv_data_size: cint;
+ parser_init: function(s: PAVCodecParserContext): cint; cdecl;
+ parser_parse: function(s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: {const} PPointer; poutbuf_size: PCint;
+ buf: {const} PByteArray; buf_size: cint): cint; cdecl;
+ parser_close: procedure(s: PAVCodecParserContext); cdecl;
+ split: function(avctx: PAVCodecContext; buf: {const} PByteArray;
+ buf_size: cint): cint; cdecl;
+ next: PAVCodecParser;
+ end; {AVCodecParser}
+
+function av_parser_next(c: PAVCodecParser): PAVCodecParser;
+ cdecl; external av__codec;
+
+procedure av_register_codec_parser(parser: PAVCodecParser);
+ cdecl; external av__codec;
+
+function av_parser_init(codec_id: cint): PAVCodecParserContext;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
+function av_parser_parse(s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer;
+ poutbuf_size: PCint;
+ buf: {const} PByteArray;
+ buf_size: cint;
+ pts: cint64;
+ dts: cint64): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Parse a packet.
+ *
+ * @param s parser context.
+ * @param avctx codec context.
+ * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished.
+ * @param poutbuf_size set to size of parsed buffer or zero if not yet finished.
+ * @param buf input buffer.
+ * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output).
+ * @param pts input presentation timestamp.
+ * @param dts input decoding timestamp.
+ * @param pos input byte position in stream.
+ * @return the number of bytes of the input bitstream used.
+ *
+ * Example:
+ * @code
+ * while (in_len) do
+ * begin
+ * len := av_parser_parse2(myparser, AVCodecContext, data, size,
+ * in_data, in_len,
+ * pts, dts, pos);
+ * in_data := in_data + len;
+ * in_len := in_len - len;
+ *
+ * if (size) then
+ * decode_frame(data, size);
+ * end;
+ * @endcode
+ *)
+function av_parser_parse2(s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer;
+ poutbuf_size: PCint;
+ buf: {const} PByteArray;
+ buf_size: cint;
+ pts: cint64;
+ dts: cint64;
+ pos: cint64): cint;
+ cdecl; external av__codec;
+
+function av_parser_change(s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: PCint;
+ buf: {const} PByteArray; buf_size: cint; keyframe: cint): cint;
+ cdecl; external av__codec;
+
+procedure av_parser_close(s: PAVCodecParserContext);
+ cdecl; external av__codec;
+
+type
+ PAVBitStreamFilterContext = ^TAVBitStreamFilterContext;
+ PAVBitStreamFilter = ^TAVBitStreamFilter;
+
+ TAVBitStreamFilterContext = record
+ priv_data: pointer;
+ filter: PAVBitStreamFilter;
+ parser: PAVCodecParserContext;
+ next: PAVBitStreamFilterContext;
+ end;
+
+ TAVBitStreamFilter = record
+ name: PAnsiChar;
+ priv_data_size: cint;
+ filter: function(bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: {const} PAnsiChar;
+ poutbuf: PPointer; poutbuf_size: PCint;
+ buf: {const} PByte; buf_size: cint; keyframe: cint): cint; cdecl;
+ close: procedure(bsfc: PAVBitStreamFilterContext);
+ next: PAVBitStreamFilter;
+ end;
+
+procedure av_register_bitstream_filter(bsf: PAVBitStreamFilter);
+ cdecl; external av__codec;
+
+function av_bitstream_filter_init(name: {const} PAnsiChar): PAVBitStreamFilterContext;
+ cdecl; external av__codec;
+
+function av_bitstream_filter_filter(bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: {const} PAnsiChar;
+ poutbuf: PPointer; poutbuf_size: PCint;
+ buf: {const} PByte; buf_size: cint; keyframe: cint): cint;
+ cdecl; external av__codec;
+
+procedure av_bitstream_filter_close(bsf: PAVBitStreamFilterContext);
+ cdecl; external av__codec;
+
+function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter;
+ cdecl; external av__codec;
+
+(* memory *)
+
+(**
+ * Reallocate the given block if it is not large enough, otherwise do nothing.
+ *
+ * @see av_realloc
+ *)
+procedure av_fast_realloc(ptr: pointer; size: PCuint; min_size: FF_INTERNALC_MEM_TYPE);
+ cdecl; external av__codec;
+
+(**
+ * Allocate a buffer, reusing the given one if large enough.
+ *
+ * Contrary to av_fast_realloc the current buffer contents might not be
+ * preserved and on error the old buffer is freed, thus no special
+ * handling to avoid memleaks is necessary.
+ *
+ * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer
+ * @param size size of the buffer *ptr points to
+ * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and
+ * *size 0 if an error occurred.
+ *)
+procedure av_fast_malloc(ptr: pointer; size: PCuint; min_size: FF_INTERNALC_MEM_TYPE);
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_MAX_VERSION_MAJOR < 53}
+(**
+ * @deprecated Deprecated in favor of av_image_copy().
+ *)
+type
+ PQuaduint8Array = ^TQuaduint8Array;
+ TQuaduint8Array = array [0..3] of cuint8;
+
+procedure av_picture_data_copy(dst_data: PQuaduint8Array; dst_linesize: TQuadIntArray;
+ src_data: PQuaduint8Array; src_linesize: TQuadIntArray;
+ pix_fmt: TAVPixelFormat; width: cint; height: cint);
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Copy image src to dst. Wraps av_picture_data_copy() above.
+ *)
+procedure av_picture_copy(dst: PAVPicture;
+ src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat;
+ width: cint;
+ height: cint);
+ cdecl; external av__codec;
+
+(**
+ * Crop image top and left side.
+ *)
+function av_picture_crop(dst: PAVPicture;
+ src: {const} PAVPicture;
+ pix_fmt: TAVPixelFormat;
+ top_band: cint;
+ left_band: cint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Pad image.
+ *)
+function av_picture_pad(dst: PAVPicture;
+ src: {const} PAVPicture;
+ height: cint;
+ width: cint;
+ pix_fmt: TAVPixelFormat;
+ padtop: cint;
+ padbottom: cint;
+ padleft: cint;
+ padright:
+ cint;
+ color: PCint): cint;
+ cdecl; external av__codec;
+
+(**
+ * Encode extradata length to a buffer. Used by xiph codecs.
+ *
+ * @param s buffer to write to; must be at least (v/255+1) bytes long
+ * @param v size of extradata in bytes
+ * @return number of bytes written to the buffer.
+ *)
+function av_xiphlacing(s: PByte; v: cuint): cuint;
+ cdecl; external av__codec;
+
+{$IF LIBAVCODEC_VERSION_MAJOR < 53}
+(**
+ * Parse str and put in width_ptr and height_ptr the detected values.
+ *
+ * @deprecated Deprecated in favor of av_parse_video_size().
+ *)
+function av_parse_video_frame_size(width_ptr: PCint; height_ptr: PCint; str: {const} PAnsiChar): cint;
+ cdecl; external av__codec; deprecated;
+
+(**
+ * Parse str and store the detected values in *frame_rate.
+ *
+ * @deprecated Deprecated in favor of av_parse_video_rate().
+ *)
+function av_parse_video_frame_rate(frame_rate: PAVRational; str: {const} PAnsiChar): cint;
+ cdecl; external av__codec; deprecated;
+{$IFEND}
+
+(**
+ * Log a generic warning message about a missing feature. This function is
+ * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
+ * only, and would normally not be used by applications.
+ * @param[in] avc a pointer to an arbitrary struct of which the first field is
+ * a pointer to an AVClass struct
+ * @param[in] feature string containing the name of the missing feature
+ * @param[in] want_sample indicates if samples are wanted which exhibit this feature.
+ * If want_sample is non-zero, additional verbage will be added to the log
+ * message which tells the user how to report samples to the development
+ * mailing list.
+ *)
+procedure av_log_missing_feature(avc: Pointer; feature: {const} PAnsiChar; want_sample: cint);
+ cdecl; external av__codec;
+
+(**
+ * Log a generic warning message asking for a sample. This function is
+ * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
+ * only, and would normally not be used by applications.
+ * @param[in] avc a pointer to an arbitrary struct of which the first field is
+ * a pointer to an AVClass struct
+ * @param[in] msg string containing an optional message, or NULL if no message
+ *)
+procedure av_log_ask_for_sample(avc: Pointer; msg: {const} PAnsiChar);
+ cdecl; external av__codec;
+
+(**
+ * Register the hardware accelerator hwaccel.
+ *)
+procedure av_register_hwaccel (hwaccel: PAVHWAccel)
+ cdecl; external av__codec;
+
+(**
+ * If hwaccel is NULL, returns the first registered hardware accelerator,
+ * if hwaccel is non-NULL, returns the next registered hardware accelerator
+ * after hwaccel, or NULL if hwaccel is the last one.
+ *)
+function av_hwaccel_next (hwaccel: PAVHWAccel): PAVHWAccel;
+ cdecl; external av__codec;
+
+(**
+ * Lock operation used by lockmgr
+ *)
+type
+ TAVLockOp = (
+ AV_LOCK_CREATE, ///< Create a mutex
+ AV_LOCK_OBTAIN, ///< Lock the mutex
+ AV_LOCK_RELEASE, ///< Unlock the mutex
+ AV_LOCK_DESTROY ///< Free mutex resources
+ );
+
+(**
+ * Register a user provided lock manager supporting the operations
+ * specified by AVLockOp. mutex points to a (void) where the
+ * lockmgr should store/get a pointer to a user allocated mutex. It's
+ * NULL upon AV_LOCK_CREATE and != NULL for all other ops.
+ *
+ * @param cb User defined callback. Note: FFmpeg may invoke calls to this
+ * callback during the call to av_lockmgr_register().
+ * Thus, the application must be prepared to handle that.
+ * If cb is set to NULL the lockmgr will be unregistered.
+ * Also note that during unregistration the previously registered
+ * lockmgr callback may also be invoked.
+ *)
+// ToDo: Implement and test this
+//function av_lockmgr_register(cb: function (mutex: Ppointer; op: TAVLockOp)): cint;
+// cdecl; external av__codec;
+
+implementation
+
+end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 07:37:41 +0000