diff options
Diffstat (limited to 'Game/Code/lib/ffmpeg/avcodec.pas')
| -rw-r--r-- | Game/Code/lib/ffmpeg/avcodec.pas | 1968 |
1 files changed, 1968 insertions, 0 deletions
diff --git a/Game/Code/lib/ffmpeg/avcodec.pas b/Game/Code/lib/ffmpeg/avcodec.pas new file mode 100644 index 00000000..978b5fb6 --- /dev/null +++ b/Game/Code/lib/ffmpeg/avcodec.pas @@ -0,0 +1,1968 @@ + (*
+ * 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
+ *)
+unit avcodec;
+
+interface
+
+uses
+ windows, avutil, rational, opt;
+
+const
+ av__format = 'avformat-50.dll';
+
+ LIBAVUTIL_VERSION_INT = ((51 shl 16) + (16 shl 8) + 0);
+ LIBAVUTIL_VERSION = '51.16.0';
+ LIBAVUTIL_BUILD = LIBAVUTIL_VERSION_INT;
+
+ AV_NOPTS_VALUE: int64 = $8000000000000000;
+ AV_TIME_BASE = 1000000;
+
+type
+ TCodecID = (
+ CODEC_ID_NONE, CODEC_ID_MPEG1VIDEO,
+ CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1 or 2 decoding */
+ CODEC_ID_MPEG2VIDEO_XVMC, CODEC_ID_H261, CODEC_ID_H263, CODEC_ID_RV10,
+ CODEC_ID_RV20, CODEC_ID_MJPEG, CODEC_ID_MJPEGB, CODEC_ID_LJPEG,
+ CODEC_ID_SP5X, CODEC_ID_JPEGLS, CODEC_ID_MPEG4, CODEC_ID_RAWVIDEO,
+ CODEC_ID_MSMPEG4V1, CODEC_ID_MSMPEG4V2, CODEC_ID_MSMPEG4V3,
+ CODEC_ID_WMV1, CODEC_ID_WMV2, CODEC_ID_H263P,
+ CODEC_ID_H263I, CODEC_ID_FLV1, CODEC_ID_SVQ1, CODEC_ID_SVQ3,
+ CODEC_ID_DVVIDEO, CODEC_ID_HUFFYUV, CODEC_ID_CYUV, CODEC_ID_H264,
+ CODEC_ID_INDEO3, CODEC_ID_VP3, CODEC_ID_THEORA, CODEC_ID_ASV1,
+ CODEC_ID_ASV2, CODEC_ID_FFV1, CODEC_ID_4XM, CODEC_ID_VCR1,
+ CODEC_ID_CLJR, CODEC_ID_MDEC, CODEC_ID_ROQ, CODEC_ID_INTERPLAY_VIDEO,
+ CODEC_ID_XAN_WC3, CODEC_ID_XAN_WC4, CODEC_ID_RPZA, CODEC_ID_CINEPAK,
+ CODEC_ID_WS_VQA, CODEC_ID_MSRLE, CODEC_ID_MSVIDEO1, CODEC_ID_IDCIN,
+ CODEC_ID_8BPS, CODEC_ID_SMC, CODEC_ID_FLIC, CODEC_ID_TRUEMOTION1,
+ CODEC_ID_VMDVIDEO, CODEC_ID_MSZH, CODEC_ID_ZLIB, CODEC_ID_QTRLE,
+ CODEC_ID_SNOW, CODEC_ID_TSCC, CODEC_ID_ULTI, CODEC_ID_QDRAW,
+ CODEC_ID_VIXL, CODEC_ID_QPEG, CODEC_ID_XVID, CODEC_ID_PNG,
+ CODEC_ID_PPM, CODEC_ID_PBM, CODEC_ID_PGM, CODEC_ID_PGMYUV,
+ CODEC_ID_PAM, CODEC_ID_FFVHUFF, CODEC_ID_RV30, CODEC_ID_RV40,
+ CODEC_ID_VC1, CODEC_ID_WMV3, CODEC_ID_LOCO, CODEC_ID_WNV1,
+ CODEC_ID_AASC, CODEC_ID_INDEO2, CODEC_ID_FRAPS, CODEC_ID_TRUEMOTION2,
+ CODEC_ID_BMP, CODEC_ID_CSCD, CODEC_ID_MMVIDEO, CODEC_ID_ZMBV,
+ CODEC_ID_AVS, CODEC_ID_SMACKVIDEO, CODEC_ID_NUV, CODEC_ID_KMVC,
+ CODEC_ID_FLASHSV, CODEC_ID_CAVS, CODEC_ID_JPEG2000, CODEC_ID_VMNC,
+ CODEC_ID_VP5, CODEC_ID_VP6, CODEC_ID_VP6F,
+
+ //* various pcm "codecs" */
+ CODEC_ID_PCM_S16LE= $10000, CODEC_ID_PCM_S16BE, CODEC_ID_PCM_U16LE,
+ CODEC_ID_PCM_U16BE, CODEC_ID_PCM_S8, CODEC_ID_PCM_U8, CODEC_ID_PCM_MULAW,
+ CODEC_ID_PCM_ALAW, CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE, CODEC_ID_PCM_U32LE,
+ CODEC_ID_PCM_U32BE, CODEC_ID_PCM_S24LE, CODEC_ID_PCM_S24BE, CODEC_ID_PCM_U24LE,
+ CODEC_ID_PCM_U24BE, CODEC_ID_PCM_S24DAUD,
+ //* various adpcm codecs */
+ CODEC_ID_ADPCM_IMA_QT= $11000, CODEC_ID_ADPCM_IMA_WAV, CODEC_ID_ADPCM_IMA_DK3,
+ CODEC_ID_ADPCM_IMA_DK4, CODEC_ID_ADPCM_IMA_WS, CODEC_ID_ADPCM_IMA_SMJPEG,
+ CODEC_ID_ADPCM_MS, CODEC_ID_ADPCM_4XM, CODEC_ID_ADPCM_XA, CODEC_ID_ADPCM_ADX,
+ CODEC_ID_ADPCM_EA, CODEC_ID_ADPCM_G726, CODEC_ID_ADPCM_CT, CODEC_ID_ADPCM_SWF,
+ CODEC_ID_ADPCM_YAMAHA, CODEC_ID_ADPCM_SBPRO_4, CODEC_ID_ADPCM_SBPRO_3,
+ CODEC_ID_ADPCM_SBPRO_2,
+ //* AMR */
+ CODEC_ID_AMR_NB= $12000, CODEC_ID_AMR_WB,
+ //* RealAudio codecs*/
+ CODEC_ID_RA_144= $13000, CODEC_ID_RA_288,
+ //* various DPCM codecs */
+ CODEC_ID_ROQ_DPCM= $14000, CODEC_ID_INTERPLAY_DPCM, CODEC_ID_XAN_DPCM,
+ CODEC_ID_SOL_DPCM, CODEC_ID_MP2= $15000,
+ CODEC_ID_MP3, //* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
+ CODEC_ID_AAC, CODEC_ID_MPEG4AAC, CODEC_ID_AC3, CODEC_ID_DTS, CODEC_ID_VORBIS,
+ CODEC_ID_DVAUDIO, CODEC_ID_WMAV1, CODEC_ID_WMAV2, CODEC_ID_MACE3,
+ CODEC_ID_MACE6, CODEC_ID_VMDAUDIO, CODEC_ID_SONIC, CODEC_ID_SONIC_LS,
+ CODEC_ID_FLAC, CODEC_ID_MP3ADU, CODEC_ID_MP3ON4, CODEC_ID_SHORTEN,
+ CODEC_ID_ALAC, CODEC_ID_WESTWOOD_SND1, CODEC_ID_GSM, CODEC_ID_QDM2,
+ CODEC_ID_COOK, CODEC_ID_TRUESPEECH, CODEC_ID_TTA, CODEC_ID_SMACKAUDIO,
+ CODEC_ID_QCELP, CODEC_ID_WAVPACK,
+ //* subtitle codecs */
+ CODEC_ID_DVD_SUBTITLE= $17000, CODEC_ID_DVB_SUBTITLE,
+
+ CODEC_ID_MPEG2TS= $20000 //* _FAKE_ codec to indicate a raw MPEG2 transport
+ // stream (only used by libavformat) */
+ );
+
+//* CODEC_ID_MP3LAME is absolete */
+const
+ CODEC_ID_MP3LAME = CODEC_ID_MP3;
+
+ AVPALETTE_SIZE = 1024;
+ AVPALETTE_COUNT = 256;
+
+type
+ TCodecType = (
+ CODEC_TYPE_UNKNOWN = -1,
+ CODEC_TYPE_VIDEO,
+ CODEC_TYPE_AUDIO,
+ CODEC_TYPE_DATA,
+ CODEC_TYPE_SUBTITLE
+ );
+
+//* currently unused, may be used if 24/32 bits samples ever supported */
+//* all in native endian */
+ TSampleFormat = (
+ SAMPLE_FMT_NONE = -1,
+ SAMPLE_FMT_U8, ///< unsigned 8 bits
+ SAMPLE_FMT_S16, ///< signed 16 bits
+ SAMPLE_FMT_S24, ///< signed 24 bits
+ SAMPLE_FMT_S32, ///< signed 32 bits
+ SAMPLE_FMT_FLT ///< float
+ );
+
+const
+//* in bytes */
+ AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio
+
+(**
+ * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
+ * this is mainly needed because some optimized bitstream readers read
+ * 32 or 64 bit at once and could read over the end<br>
+ * Note, if the first 23 bits of the additional bytes are not 0 then damaged
+ * MPEG bitstreams could cause overread and segfault
+ *)
+ FF_INPUT_BUFFER_PADDING_SIZE = 8;
+
+(**
+ * minimum encoding buffer size.
+ * used to avoid some checks during header writing
+ *)
+ FF_MIN_BUFFER_SIZE = 16384;
+
+type
+//* motion estimation type, EPZS by default */
+ TMotion_Est_ID = (
+ ME_ZERO = 1,
+ ME_FULL,
+ ME_LOG,
+ ME_PHODS,
+ ME_EPZS,
+ ME_X1,
+ ME_HEX,
+ ME_UMH,
+ ME_ITER
+ );
+
+ TAVDiscard = (
+//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames)
+ AVDISCARD_NONE = -16, ///< discard nothing
+ AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi
+ AVDISCARD_NONREF = 8, ///< discard all non reference
+ AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames
+ AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes
+ AVDISCARD_ALL = 48, ///< discard all
+ AVDISCARD_FUCK = $FFFFFF
+ );
+
+ PRcOverride = ^TRcOverride;
+ TRcOverride = record {16}
+ start_frame: integer;
+ end_frame: integer;
+ qscale: integer; // if this is 0 then quality_factor will be used instead
+ quality_factor: single;
+ end;
+
+const
+ FF_MAX_B_FRAMES = 16;
+
+(* encoding support
+ these flags can be passed in AVCodecContext.flags before initing
+ Note: not everything is supported yet.
+*)
+
+ CODEC_FLAG_QSCALE = $0002; ///< use fixed qscale
+ CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / Advanced prediction for H263
+ CODEC_FLAG_QPEL = $0010; ///< use qpel MC
+ CODEC_FLAG_GMC = $0020; ///< use GMC
+ CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0>
+ CODEC_FLAG_PART = $0080; ///< use data partitioning
+//* parent program gurantees that the input for b-frame containing streams is not written to
+// for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
+ CODEC_FLAG_INPUT_PRESERVED = $0100;
+ CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode
+ CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode
+ CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg)
+ CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale
+ CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges
+ CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding
+ CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random location instead
+ // of only at frame boundaries */
+ CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization
+ CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct
+ CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay
+ CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan
+ CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization
+ CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe
+ CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct)
+//* Fx : Flag for h263+ extra options */
+ CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this)
+ CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction
+ CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector
+ CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp
+ CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon
+ CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc
+ CODEC_FLAG_OBMC = $00000001; ///< OBMC
+ CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter
+ CODEC_FLAG_H263P_SLICE_STRUCT = $10000000;
+ CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation
+ CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data
+ CODEC_FLAG_CLOSED_GOP = $80000000;
+ CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks
+ CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size
+ CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding
+ CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata
+ CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references
+ CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames
+ CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition
+ CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform
+ CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip
+ CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters
+ CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization
+ CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table
+ CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC)
+
+(* Unsupported options :
+ * Syntax Arithmetic coding (SAC)
+ * Reference Picture Selection
+ * Independant Segment Decoding */
+/* /Fx */
+/* codec capabilities *)
+
+const
+ CODEC_CAP_DRAW_HORIZ_BAND = $001; ///< decoder can use draw_horiz_band callback
+(**
+ * Codec uses get_buffer() for allocating buffers.
+ * direct rendering method 1 *)
+ CODEC_CAP_DR1 = $002;
+(* if 'parse_only' field is true, then avcodec_parse_frame() can be used *)
+ CODEC_CAP_PARSE_ONLY = $004;
+ CODEC_CAP_TRUNCATED = $008;
+//* codec can export data for HW decoding (XvMC) */
+ CODEC_CAP_HWACCEL = $010;
+
+(**
+ * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data.
+ * if this is not set, the codec is guranteed to never be feeded with NULL data *)
+ CODEC_CAP_DELAY = $0020;
+(**
+ * Codec can be fed a final frame with a smaller size.
+ * This can be used to prevent truncation of the last audio samples. *)
+ CODEC_CAP_SMALL_LAST_FRAME = $0040;
+
+//the following defines may change, don't expect compatibility if you use them
+ MB_TYPE_INTRA4x4 = $001;
+ MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific
+ MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific
+ MB_TYPE_16x16 = $008;
+ MB_TYPE_16x8 = $010;
+ MB_TYPE_8x16 = $020;
+ MB_TYPE_8x8 = $040;
+ MB_TYPE_INTERLACED = $080;
+ MB_TYPE_DIRECT2 = $100; //FIXME
+ MB_TYPE_ACPRED = $200;
+ MB_TYPE_GMC = $400;
+ MB_TYPE_SKIP = $800;
+ MB_TYPE_P0L0 = $1000;
+ MB_TYPE_P1L0 = $2000;
+ MB_TYPE_P0L1 = $4000;
+ MB_TYPE_P1L1 = $8000;
+ MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0);
+ MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1);
+ MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1);
+ MB_TYPE_QUANT = $0010000;
+ MB_TYPE_CBP = $0020000;
+//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...)
+
+type
+(**
+ * Pan Scan area.
+ * this specifies the area which should be displayed. Note there may be multiple such areas for one frame *)
+ PAVPanScan = ^TAVPanScan;
+ TAVPanScan = record {24}
+ (*** id.
+ * - encoding: set by user.
+ * - decoding: set by lavc *)
+ id: integer;
+
+ (*** width and height in 1/16 pel
+ * - encoding: set by user.
+ * - decoding: set by lavc *)
+ width: integer;
+ height: integer;
+
+ (*** position of the top left corner in 1/16 pel for up to 3 fields/frames.
+ * - encoding: set by user.
+ * - decoding: set by lavc *)
+ position: array [0..2] of array [0..1] of smallint;
+ end;
+
+const
+ FF_QSCALE_TYPE_MPEG1 = 0;
+ FF_QSCALE_TYPE_MPEG2 = 1;
+
+ FF_BUFFER_TYPE_INTERNAL = 1;
+ FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user)
+ FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared
+ FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything
+
+
+ FF_I_TYPE = 1; // Intra
+ FF_P_TYPE = 2; // Predicted
+ FF_B_TYPE = 3; // Bi-dir predicted
+ FF_S_TYPE = 4; // S(GMC)-VOP MPEG4
+ FF_SI_TYPE = 5;
+ FF_SP_TYPE = 6;
+
+ FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore)
+ FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer
+ FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content
+ FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update)
+
+type
+ (*** Audio Video Frame. *)
+ PAVFrame = ^TAVFrame;
+ TAVFrame = record {200}
+ (*** pointer to the picture planes.
+ * this might be different from the first allocated byte *)
+ data: array [0..3] of pointer;
+ linesize: array [0..3] of integer;
+ (*** pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer
+ * this isn't used by lavc unless the default get/release_buffer() is used*)
+ base: array [0..3] of pchar;
+ (*** 1 -> keyframe, 0-> not *)
+ key_frame: integer;
+ (*** picture type of the frame, see ?_TYPE below.*)
+ pict_type: integer;
+ (*** presentation timestamp in time_base units (time when frame should be shown to user)
+ * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed*)
+ pts: int64;
+ (*** picture number in bitstream order.*)
+ coded_picture_number: integer;
+ (*** picture number in display order.*)
+ display_picture_number: integer;
+ (*** quality (between 1 (good) and FF_LAMBDA_MAX (bad)) *)
+ quality: integer;
+ (*** buffer age (1->was last buffer and dint change, 2->..., ...).*)
+ age: integer;
+ (*** is this picture used as reference*)
+ reference: integer;
+ (*** QP table*)
+ qscale_table: pchar;
+ (*** QP store stride*)
+ qstride: integer;
+ (*** mbskip_table[mb]>=1 if MB didnt change*)
+ mbskip_table: pchar;
+ (**
+ * Motion vector table.
+ * @code
+ * example:
+ * int mv_sample_log2= 4 - motion_subsample_log2;
+ * int mb_width= (width+15)>>4;
+ * int mv_stride= (mb_width << mv_sample_log2) + 1;
+ * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y];
+ * @endcode
+ * - encoding: set by user
+ * - decoding: set by lavc *)
+ motion_val: array [0..1] of pointer;
+ (*** Macroblock type table
+ * mb_type_base + mb_width + 2 *)
+ mb_type: PCardinal;
+ (*** log2 of the size of the block which a single vector in motion_val represents:
+ * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)*)
+ motion_subsample_log2: byte;
+ (*** for some private data of the user*)
+ opaque: pointer;
+ (*** error*)
+ error: array [0..3] of int64;
+ (*** type of the buffer (to keep track of who has to dealloc data[*])
+ * Note: user allocated (direct rendering) & internal buffers can not coexist currently*)
+ _type: integer;
+ (*** when decoding, this signal how much the picture must be delayed.
+ * extra_delay = repeat_pict / (2*fps)*)
+ repeat_pict: integer;
+ qscale_type: Integer;
+ (*** The content of the picture is interlaced.*)
+ interlaced_frame: Integer;
+ (*** if the content is interlaced, is top field displayed first.*)
+ top_field_first: integer;
+ (*** Pan scan.*)
+ pan_scan: PAVPanScan;
+ (*** tell user application that palette has changed from previous frame.*)
+ palette_has_changed: integer;
+ (*** Codec suggestion on buffer type if != 0
+ * - decoding: set by lavc (before get_buffer() call))*)
+ buffer_hints: integer;
+ (*** DCT coeffitients*)
+ dct_coeff: PSmallInt;
+ (*** Motion referece frame index*)
+ ref_index: array [0..1] of pchar;
+ end;
+
+const
+ DEFAULT_FRAME_RATE_BASE = 1001000;
+
+ FF_BUG_AUTODETECT = 1; ///< autodetection
+ FF_BUG_OLD_MSMPEG4 = 2;
+ FF_BUG_XVID_ILACE = 4;
+ FF_BUG_UMP4 = 8;
+ FF_BUG_NO_PADDING = 16;
+ FF_BUG_AMV = 32;
+ FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default
+ FF_BUG_QPEL_CHROMA = 64;
+ FF_BUG_STD_QPEL = 128;
+ FF_BUG_QPEL_CHROMA2 = 256;
+ FF_BUG_DIRECT_BLOCKSIZE = 512;
+ FF_BUG_EDGE = 1024;
+ FF_BUG_HPEL_CHROMA = 2048;
+ FF_BUG_DC_CLIP = 4096;
+ FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders
+
+ FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to a older more strict version of the spec or reference software
+ FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences
+ FF_COMPLIANCE_NORMAL = 0;
+ FF_COMPLIANCE_INOFFICIAL = -1; ///< allow inofficial extensions
+ FF_COMPLIANCE_EXPERIMENTAL = -2; ///< allow non standarized experimental things
+
+ FF_ER_CAREFUL = 1;
+ FF_ER_COMPLIANT = 2;
+ FF_ER_AGGRESSIVE = 3;
+ FF_ER_VERY_AGGRESSIVE = 4;
+
+ FF_DCT_AUTO = 0;
+ FF_DCT_FASTINT = 1;
+ FF_DCT_INT = 2;
+ FF_DCT_MMX = 3;
+ FF_DCT_MLIB = 4;
+ FF_DCT_ALTIVEC = 5;
+ FF_DCT_FAAN = 6;
+
+ FF_IDCT_AUTO = 0;
+ FF_IDCT_INT = 1;
+ FF_IDCT_SIMPLE = 2;
+ FF_IDCT_SIMPLEMMX = 3;
+ FF_IDCT_LIBMPEG2MMX = 4;
+ FF_IDCT_PS2 = 5;
+ FF_IDCT_MLIB = 6;
+ FF_IDCT_ARM = 7;
+ FF_IDCT_ALTIVEC = 8;
+ FF_IDCT_SH4 = 9;
+ FF_IDCT_SIMPLEARM = 10;
+ FF_IDCT_H264 = 11;
+ FF_IDCT_VP3 = 12;
+ FF_IDCT_IPP = 13;
+ FF_IDCT_XVIDMMX = 14;
+
+ FF_EC_GUESS_MVS = 1;
+ FF_EC_DEBLOCK = 2;
+
+ FF_MM_FORCE = $80000000; (* force usage of selected flags (OR) *)
+ (* lower 16 bits - CPU features *)
+
+ FF_MM_MMX = $0001; (* standard MMX *)
+ FF_MM_3DNOW = $0004; (* AMD 3DNOW *)
+ FF_MM_MMXEXT = $0002; (* SSE integer functions or AMD MMX ext *)
+ FF_MM_SSE = $0008; (* SSE functions *)
+ FF_MM_SSE2 = $0010; (* PIV SSE2 functions *)
+ FF_MM_3DNOWEXT = $0020; (* AMD 3DNowExt *)
+ FF_MM_IWMMXT = $0100; (* XScale IWMMXT *)
+
+ FF_PRED_LEFT = 0;
+ FF_PRED_PLANE = 1;
+ FF_PRED_MEDIAN = 2;
+
+ FF_DEBUG_PICT_INFO = 1;
+ FF_DEBUG_RC = 2;
+ FF_DEBUG_BITSTREAM = 4;
+ FF_DEBUG_MB_TYPE = 8;
+ FF_DEBUG_QP = 16;
+ FF_DEBUG_MV = 32;
+ FF_DEBUG_DCT_COEFF = $00000040;
+ FF_DEBUG_SKIP = $00000080;
+ FF_DEBUG_STARTCODE = $00000100;
+ FF_DEBUG_PTS = $00000200;
+ FF_DEBUG_ER = $00000400;
+ FF_DEBUG_MMCO = $00000800;
+ FF_DEBUG_BUGS = $00001000;
+ FF_DEBUG_VIS_QP = $00002000;
+ FF_DEBUG_VIS_MB_TYPE = $00004000;
+
+ FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames
+ FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames
+ FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames
+
+ FF_CMP_SAD = 0;
+ FF_CMP_SSE = 1;
+ FF_CMP_SATD = 2;
+ FF_CMP_DCT = 3;
+ FF_CMP_PSNR = 4;
+ FF_CMP_BIT = 5;
+ FF_CMP_RD = 6;
+ FF_CMP_ZERO = 7;
+ FF_CMP_VSAD = 8;
+ FF_CMP_VSSE = 9;
+ FF_CMP_NSSE = 10;
+ FF_CMP_W53 = 11;
+ FF_CMP_W97 = 12;
+ FF_CMP_DCTMAX = 13;
+ FF_CMP_CHROMA = 256;
+
+ FF_DTG_AFD_SAME = 8;
+ FF_DTG_AFD_4_3 = 9;
+ FF_DTG_AFD_16_9 = 10;
+ FF_DTG_AFD_14_9 = 11;
+ FF_DTG_AFD_4_3_SP_14_9 = 13;
+ FF_DTG_AFD_16_9_SP_14_9 = 14;
+ FF_DTG_AFD_SP_4_3 = 15;
+
+ FF_DEFAULT_QUANT_BIAS = 999999;
+
+ FF_LAMBDA_SHIFT = 7;
+ FF_LAMBDA_SCALE = (1 shl FF_LAMBDA_SHIFT);
+ FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda
+ FF_LAMBDA_MAX = (256 * 128 - 1);
+
+ FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove
+
+ FF_CODER_TYPE_VLC = 0;
+ FF_CODER_TYPE_AC = 1;
+
+ SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display
+ SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
+ SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
+
+ FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp
+ FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits
+ FF_MB_DECISION_RD = 2; ///< rate distoration
+
+ FF_AA_AUTO = 0;
+ FF_AA_FASTINT = 1; //not implemented yet
+ FF_AA_INT = 2;
+ FF_AA_FLOAT = 3;
+
+ FF_PROFILE_UNKNOWN = -99;
+
+ FF_LEVEL_UNKNOWN = -99;
+
+ X264_PART_I4X4 = $001; (* Analyse i4x4 *)
+ X264_PART_I8X8 = $002; (* Analyse i8x8 (requires 8x8 transform) *)
+ X264_PART_P8X8 = $010; (* Analyse p16x8, p8x16 and p8x8 *)
+ X264_PART_P4X4 = $020; (* Analyse p8x4, p4x8, p4x4 *)
+ X264_PART_B8X8 = $100; (* Analyse b16x8, b8x16 and b8x8 *)
+
+type
+ PAVCLASS = ^TAVCLASS;
+ PAVCodecContext = ^TAVCodecContext;
+ PAVCodec = ^TAVCodec;
+ PAVPaletteControl = ^TAVPaletteControl;
+
+ TAVCLASS = record {12}
+ class_name: pchar;
+ (* actually passing a pointer to an AVCodecContext
+ or AVFormatContext, which begin with an AVClass.
+ Needed because av_log is in libavcodec and has no visibility
+ of AVIn/OutputFormat *)
+ item_name: function (): pchar; cdecl;
+ option: PAVOption;
+ end; +
+ TAVCodecContext = record {720}
+ (*** Info on struct for av_log
+ * - set by avcodec_alloc_context *)
+ av_class: PAVClass;
+ (*** the average bitrate.
+ * - encoding: set by user. unused for constant quantizer encoding
+ * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream *)
+ bit_rate: integer;
+ (*** number of bits the bitstream is allowed to diverge from the reference.
+ * the reference can be CBR (for CBR pass1) or VBR (for pass2)
+ * - encoding: set by user. unused for constant quantizer encoding
+ * - decoding: unused *)
+ bit_rate_tolerance: integer;
+ (*** CODEC_FLAG_*.
+ * - encoding: set by user.
+ * - decoding: set by user. *)
+ flags: integer;
+ (*** some codecs needs additionnal format info. It is stored here
+ * - encoding: set by user.
+ * - decoding: set by lavc. (FIXME is this ok?) *)
+ sub_id: integer;
+
+ (**
+ * motion estimation algorithm used for video coding.
+ * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex),
+ * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific]
+ * - encoding: MUST be set by user.
+ * - decoding: unused *)
+ me_method: integer;
+
+ (**
+ * some codecs need / can use extra-data like huffman tables.
+ * mjpeg: huffman tables
+ * rv10: additional flags
+ * mpeg4: global headers (they can be in the bitstream or here)
+ * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger
+ * then extradata_size to avoid prolems if its read with the bitstream reader
+ * the bytewise contents of extradata must not depend on the architecture or cpu endianness
+ * - encoding: set/allocated/freed by lavc.
+ * - decoding: set/allocated/freed by user.
+ *)
+ extradata: pointer;
+ extradata_size: integer;
+
+ (**
+ * this is the fundamental unit of time (in seconds) in terms
+ * of which frame timestamps are represented. for fixed-fps content,
+ * timebase should be 1/framerate and timestamp increments should be
+ * identically 1.
+ * - encoding: MUST be set by user
+ * - decoding: set by lavc. *)
+ time_base: TAVRational;
+
+ (* video only *)
+ (*** picture width / height.
+ * - encoding: MUST be set by user.
+ * - decoding: set by lavc.
+ * Note, for compatibility its possible to set this instead of
+ * coded_width/height before decoding *)
+ width, height: integer;
+ (*** the number of pictures in a group of pitures, or 0 for intra_only.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ gop_size: integer;
+ (*** pixel format, see PIX_FMT_xxx.
+ * - encoding: set by user.
+ * - decoding: set by lavc. *)
+ pix_fmt: TAVPixelFormat;
+ (*** Frame rate emulation. If not zero lower layer (i.e. format handler)
+ * has to read frames at native frame rate.
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ rate_emu: integer;
+ (*** if non NULL, 'draw_horiz_band' is called by the libavcodec
+ * decoder to draw an horizontal band. It improve cache usage. Not
+ * all codecs can do that. You must check the codec capabilities
+ * before
+ * - encoding: unused
+ * - decoding: set by user.
+ * @param height the height of the slice
+ * @param y the y position of the slice
+ * @param type 1->top field, 2->bottom field, 3->frame
+ * @param offset offset into the AVFrame.data from which the slice should be read *)
+ draw_horiz_band: procedure (s: PAVCodecContext;
+ const src: PAVFrame; offset: PInteger;
+ y: integer; _type: integer; height: integer); cdecl;
+
+ (* audio only *)
+ sample_rate: integer; ///< samples per sec
+ channels: integer;
+ (*** audio sample format.
+ * - encoding: set by user.
+ * - decoding: set by lavc. *)
+ sample_fmt: TSampleFormat; ///< sample format, currenly unused
+
+ (* the following data should not be initialized *)
+ (*** samples per packet. initialized when calling 'init' *)
+ frame_size: integer;
+ frame_number: integer; ///< audio or video frame number
+ real_pict_num: integer; ///< returns the real picture number of previous encoded frame
+
+ (*** number of frames the decoded output will be delayed relative to
+ * the encoded input.
+ * - encoding: set by lavc.
+ * - decoding: unused *)
+ delay: integer;
+
+ (* - encoding parameters *)
+ qcompress: single; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
+ qblur: single; ///< amount of qscale smoothing over time (0.0-1.0)
+
+ (*** minimum quantizer.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ qmin: integer;
+
+ (*** maximum quantizer.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ qmax: integer;
+
+ (*** maximum quantizer difference etween frames.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ max_qdiff: integer;
+
+ (*** maximum number of b frames between non b frames.
+ * note: the output will be delayed by max_b_frames+1 relative to the input
+ * - encoding: set by user.
+ * - decoding: unused *)
+ max_b_frames: integer;
+
+ (*** qscale factor between ip and b frames.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ b_quant_factor: single;
+
+ (** obsolete FIXME remove *)
+ rc_strategy: integer;
+ b_frame_strategy: integer;
+
+ (*** hurry up amount.
+ * deprecated in favor of skip_idct and skip_frame
+ * - encoding: unused
+ * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header *)
+ hurry_up: integer;
+
+ codec: PAVCodec;
+
+ priv_data: pointer;
+
+ (* unused, FIXME remove*)
+ rtp_mode: integer;
+
+ rtp_payload_size: integer; (* The size of the RTP payload: the coder will *)
+ (* do it's best to deliver a chunk with size *)
+ (* below rtp_payload_size, the chunk will start *)
+ (* with a start code on some codecs like H.263 *)
+ (* This doesn't take account of any particular *)
+ (* headers inside the transmited RTP payload *)
+
+
+ (* The RTP callback: This function is called *)
+ (* every time the encoder has a packet to send *)
+ (* Depends on the encoder if the data starts *)
+ (* with a Start Code (it should) H.263 does. *)
+ (* mb_nb contains the number of macroblocks *)
+ (* encoded in the RTP payload *)
+ rtp_callback: procedure (avctx: PAVCodecContext; data: pointer;
+ size: integer; mb_nb: integer); cdecl;
+
+ (* statistics, used for 2-pass encoding *)
+ mv_bits: integer;
+ header_bits: integer;
+ i_tex_bits: integer;
+ p_tex_bits: integer;
+ i_count: integer;
+ p_count: integer;
+ skip_count: integer;
+ misc_bits: integer;
+
+ (*** number of bits used for the previously encoded frame.
+ * - encoding: set by lavc
+ * - decoding: unused *)
+ frame_bits: integer;
+
+ (*** private data of the user, can be used to carry app specific stuff.
+ * - encoding: set by user
+ * - decoding: set by user *)
+ opaque: pointer;
+
+ codec_name: array [0..31] of char;
+ codec_type: TCodecType; (* see CODEC_TYPE_xxx *)
+ codec_id: TCodecID; (* see CODEC_ID_xxx *)
+
+ (*** fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * this is used to workaround some encoder bugs
+ * - encoding: set by user, if not then the default based on codec_id will be used
+ * - decoding: set by user, will be converted to upper case by lavc during init *)
+// codec_tag: cardinal; // можно array [0..3] of char - тогда видно FOURCC
+ codec_tag: array [0..3] of char;
+
+ (*** workaround bugs in encoders which sometimes cannot be detected automatically.
+ * - encoding: set by user
+ * - decoding: set by user *)
+ workaround_bugs: integer;
+
+ (*** luma single coeff elimination threshold.
+ * - encoding: set by user
+ * - decoding: unused *)
+ luma_elim_threshold: integer;
+
+ (*** chroma single coeff elimination threshold.
+ * - encoding: set by user
+ * - decoding: unused *)
+ chroma_elim_threshold: integer;
+
+ (*** strictly follow the std (MPEG4, ...).
+ * - encoding: set by user
+ * - decoding: unused *)
+ strict_std_compliance: integer;
+
+ (*** qscale offset between ip and b frames.
+ * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
+ * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
+ * - encoding: set by user.
+ * - decoding: unused *)
+ b_quant_offset: single;
+
+ (*** error resilience higher values will detect more errors but may missdetect
+ * some more or less valid parts as errors.
+ * - encoding: unused
+ * - decoding: set by user *)
+ error_resilience: integer;
+
+ (*** called at the beginning of each frame to get a buffer for it.
+ * if pic.reference is set then the frame will be read later by lavc
+ * avcodec_align_dimensions() should be used to find the required width and
+ * height, as they normally need to be rounded up to the next multiple of 16
+ * - encoding: unused
+ * - decoding: set by lavc, user can override *)
+ get_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; cdecl;
+
+ (*** called to release buffers which where allocated with get_buffer.
+ * a released buffer can be reused in get_buffer()
+ * pic.data[*] must be set to NULL
+ * - encoding: unused
+ * - decoding: set by lavc, user can override *)
+ release_buffer: procedure (c: PAVCodecContext; pic: PAVFrame); cdecl;
+
+ (*** if 1 the stream has a 1 frame delay during decoding.
+ * - encoding: set by lavc
+ * - decoding: set by lavc *)
+ has_b_frames: integer;
+
+ (*** number of bytes per packet if constant and known or 0
+ * used by some WAV based audio codecs *)
+ block_align: integer;
+
+ parse_only: integer; (* - decoding only: if true, only parsing is done
+ (function avcodec_parse_frame()). The frame
+ data is returned. Only MPEG codecs support this now. *)
+
+ (*** 0-> h263 quant 1-> mpeg quant.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ mpeg_quant: integer;
+
+ (*** pass1 encoding statistics output buffer.
+ * - encoding: set by lavc
+ * - decoding: unused *)
+ stats_out: pchar;
+
+ (*** pass2 encoding statistics input buffer.
+ * concatenated stuff from stats_out of pass1 should be placed here
+ * - encoding: allocated/set/freed by user
+ * - decoding: unused *)
+ stats_in: pchar;
+
+ (*** ratecontrol qmin qmax limiting method.
+ * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
+ * - encoding: set by user.
+ * - decoding: unused *)
+ rc_qsquish: single;
+
+ rc_qmod_amp: single;
+ rc_qmod_freq: integer;
+
+ (*** ratecontrol override, see RcOverride.
+ * - encoding: allocated/set/freed by user.
+ * - decoding: unused *)
+ rc_override: PRcOverride;
+ rc_override_count: integer;
+
+ (*** rate control equation.
+ * - encoding: set by user
+ * - decoding: unused *)
+ rc_eq: pchar;
+
+ (*** maximum bitrate.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ rc_max_rate: integer;
+
+ (*** minimum bitrate.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ rc_min_rate: integer;
+
+ (*** decoder bitstream buffer size.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ rc_buffer_size: integer;
+ rc_buffer_aggressivity: single;
+
+ (*** qscale factor between p and i frames.
+ * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
+ * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
+ * - encoding: set by user.
+ * - decoding: unused *)
+ i_quant_factor: single;
+
+ (*** qscale offset between p and i frames.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ i_quant_offset: single;
+
+ (*** initial complexity for pass1 ratecontrol.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ rc_initial_cplx: single;
+
+ (*** dct algorithm, see FF_DCT_* below.
+ * - encoding: set by user
+ * - decoding: unused *)
+ dct_algo: integer;
+
+ (*** luminance masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused *)
+ lumi_masking: single;
+
+ (*** temporary complexity masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused *)
+ temporal_cplx_masking: single;
+
+ (*** spatial complexity masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused *)
+ spatial_cplx_masking: single;
+
+ (** * p block masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused *)
+ p_masking: single;
+
+ (*** darkness masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused *)
+ dark_masking: single;
+
+ (* for binary compatibility *)
+ unused: integer;
+
+ (*** idct algorithm, see FF_IDCT_* below.
+ * - encoding: set by user
+ * - decoding: set by user *)
+ idct_algo: integer;
+
+ (*** slice count.
+ * - encoding: set by lavc
+ * - decoding: set by user (or 0) *)
+ slice_count: integer;
+
+ (*** slice offsets in the frame in bytes.
+ * - encoding: set/allocated by lavc
+ * - decoding: set/allocated by user (or NULL) *)
+ slice_offset: PInteger;
+
+ (*** error concealment flags.
+ * - encoding: unused
+ * - decoding: set by user *)
+ error_concealment: integer;
+
+ (*** dsp_mask could be add used to disable unwanted CPU features
+ * CPU features (i.e. MMX, SSE. ...)
+ *
+ * with FORCE flag you may instead enable given CPU features
+ * (Dangerous: usable in case of misdetection, improper usage however will
+ * result into program crash) *)
+ dsp_mask: cardinal;
+
+ (*** bits per sample/pixel from the demuxer (needed for huffyuv).
+ * - encoding: set by lavc
+ * - decoding: set by user *)
+ bits_per_sample: integer;
+
+ (*** prediction method (needed for huffyuv).
+ * - encoding: set by user
+ * - decoding: unused *)
+ prediction_method: integer;
+
+ (*** sample aspect ratio (0 if unknown).
+ * numerator and denominator must be relative prime and smaller then 256 for some video standards
+ * - encoding: set by user.
+ * - decoding: set by lavc. *)
+ sample_aspect_ratio: TAVRational;
+
+ (*** the picture in the bitstream.
+ * - encoding: set by lavc
+ * - decoding: set by lavc *)
+ coded_frame: PAVFrame;
+
+ (*** debug.
+ * - encoding: set by user.
+ * - decoding: set by user. *)
+ debug: integer;
+
+ (*** debug.
+ * - encoding: set by user.
+ * - decoding: set by user. *)
+ debug_mv: integer;
+
+ (** error.
+ * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
+ * - decoding: unused *)
+ error: array [0..3] of int64;
+
+ (*** minimum MB quantizer.
+ * - encoding: unused
+ * - decoding: unused *)
+ mb_qmin: integer;
+
+ (*** maximum MB quantizer.
+ * - encoding: unused
+ * - decoding: unused *)
+ mb_qmax: integer;
+
+ (*** motion estimation compare function.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ me_cmp: integer;
+
+ (*** subpixel motion estimation compare function.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ me_sub_cmp: integer;
+ (*** macroblock compare function (not supported yet).
+ * - encoding: set by user.
+ * - decoding: unused *)
+ mb_cmp: integer;
+ (*** interlaced dct compare function
+ * - encoding: set by user.
+ * - decoding: unused *)
+ ildct_cmp: integer;
+ (*** ME diamond size & shape.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ dia_size: integer;
+
+ (*** amount of previous MV predictors (2a+1 x 2a+1 square).
+ * - encoding: set by user.
+ * - decoding: unused *)
+ last_predictor_count: integer;
+
+ (*** pre pass for motion estimation.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ pre_me: integer;
+
+ (*** motion estimation pre pass compare function.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ me_pre_cmp: integer;
+
+ (*** ME pre pass diamond size & shape.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ pre_dia_size: integer;
+
+ (*** subpel ME quality.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ me_subpel_quality: integer;
+
+ (*** callback to negotiate the pixelFormat.
+ * @param fmt is the list of formats which are supported by the codec,
+ * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
+ * the first is allways the native one
+ * @return the choosen format
+ * - encoding: unused
+ * - decoding: set by user, if not set then the native format will always be choosen
+ *)
+ get_format: function (s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat; cdecl;
+
+ (*** DTG active format information (additionnal aspect ratio
+ * information only used in DVB MPEG2 transport streams). 0 if
+ * not set.
+ * - encoding: unused.
+ * - decoding: set by decoder *)
+ dtg_active_format: integer;
+
+ (*** Maximum motion estimation search range in subpel units.
+ * if 0 then no limit
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ me_range: integer;
+
+ (*** intra quantizer bias.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ intra_quant_bias: integer;
+
+ (*** inter quantizer bias.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ inter_quant_bias: integer;
+
+ (*** color table ID.
+ * - encoding: unused.
+ * - decoding: which clrtable should be used for 8bit RGB images
+ * table have to be stored somewhere FIXME *)
+ color_table_id: integer;
+
+ (*** internal_buffer count.
+ * Don't touch, used by lavc default_get_buffer() *)
+ internal_buffer_count: integer;
+
+ (*** internal_buffers.
+ * Don't touch, used by lavc default_get_buffer() *)
+ internal_buffer: pointer;
+
+ (*** global quality for codecs which cannot change it per frame.
+ * this should be proportional to MPEG1/2/4 qscale.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ global_quality: integer;
+
+ (*** coder type
+ * - encoding: set by user.
+ * - decoding: unused *)
+ coder_type: integer;
+
+ (*** context model
+ * - encoding: set by user.
+ * - decoding: unused *)
+ context_model: integer;
+
+ (*** slice flags
+ * - encoding: unused
+ * - decoding: set by user. *)
+ slice_flags: integer;
+
+ (*** XVideo Motion Acceleration
+ * - encoding: forbidden
+ * - decoding: set by decoder *)
+ xvmc_acceleration: integer;
+
+ (*** macroblock decision mode
+ * - encoding: set by user.
+ * - decoding: unused *)
+ mb_decision: integer;
+
+ (*** custom intra quantization matrix
+ * - encoding: set by user, can be NULL
+ * - decoding: set by lavc *)
+ intra_matrix: Pword;
+
+ (*** custom inter quantization matrix
+ * - encoding: set by user, can be NULL
+ * - decoding: set by lavc *)
+ inter_matrix: Pword;
+
+ (*** fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * this is used to workaround some encoder bugs
+ * - encoding: unused
+ * - decoding: set by user, will be converted to upper case by lavc during init *)
+ stream_codec_tag: array [0..3] of char; //cardinal;
+
+ (*** scene change detection threshold.
+ * 0 is default, larger means fewer detected scene changes
+ * - encoding: set by user.
+ * - decoding: unused *)
+ scenechange_threshold: integer;
+
+ (*** minimum lagrange multipler
+ * - encoding: set by user.
+ * - decoding: unused *)
+ lmin: integer;
+
+ (*** maximum lagrange multipler
+ * - encoding: set by user.
+ * - decoding: unused *)
+ lmax: integer;
+
+ (*** Palette control structure
+ * - encoding: ??? (no palette-enabled encoder yet)
+ * - decoding: set by user. *)
+ palctrl: PAVPaletteControl;
+
+ (*** noise reduction strength
+ * - encoding: set by user.
+ * - decoding: unused *)
+ noise_reduction: integer;
+
+ (*** called at the beginning of a frame to get cr buffer for it.
+ * buffer type (size, hints) must be the same. lavc won't check it.
+ * lavc will pass previous buffer in pic, function should return
+ * same buffer or new buffer with old frame "painted" into it.
+ * if pic.data[0] == NULL must behave like get_buffer().
+ * - encoding: unused
+ * - decoding: set by lavc, user can override *)
+ reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; cdecl;
+
+ (*** number of bits which should be loaded into the rc buffer before decoding starts
+ * - encoding: set by user.
+ * - decoding: unused *)
+ rc_initial_buffer_occupancy: integer;
+ inter_threshold: integer;
+
+ (*** CODEC_FLAG2_*.
+ * - encoding: set by user.
+ * - decoding: set by user. *)
+ flags2: integer;
+
+ (*** simulates errors in the bitstream to test error concealment.
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ error_rate: integer;
+
+ (*** MP3 antialias algorithm, see FF_AA_* below.
+ * - encoding: unused
+ * - decoding: set by user *)
+ antialias_algo: integer;
+
+ (*** Quantizer noise shaping.
+ * - encoding: set by user
+ * - decoding: unused *)
+ quantizer_noise_shaping: integer;
+
+ (*** Thread count.
+ * is used to decide how many independant tasks should be passed to execute()
+ * - encoding: set by user
+ * - decoding: set by user *)
+ thread_count: integer;
+
+ (*** the codec may call this to execute several independant things. it will return only after
+ * finishing all tasks, the user may replace this with some multithreaded implementation, the
+ * default implementation will execute the parts serially
+ * @param count the number of things to execute
+ * - encoding: set by lavc, user can override
+ * - decoding: set by lavc, user can override *)
+ execute: function (c: PAVCodecContext; func: pointer; arg: PPointer; ret: PInteger; count: integer): integer; cdecl;
+
+ (*** Thread opaque.
+ * can be used by execute() to store some per AVCodecContext stuff.
+ * - encoding: set by execute()
+ * - decoding: set by execute() *)
+ thread_opaque: pointer;
+
+ (*** Motion estimation threshold. under which no motion estimation is
+ * performed, but instead the user specified motion vectors are used
+ * - encoding: set by user
+ * - decoding: unused *)
+ me_threshold: integer;
+
+ (*** Macroblock threshold. under which the user specified macroblock types will be used
+ * - encoding: set by user
+ * - decoding: unused *)
+ mb_threshold: integer;
+
+ (*** precision of the intra dc coefficient - 8.
+ * - encoding: set by user
+ * - decoding: unused *)
+ intra_dc_precision: integer;
+
+ (*** noise vs. sse weight for the nsse comparsion function.
+ * - encoding: set by user
+ * - decoding: unused *)
+ nsse_weight: integer;
+
+ (*** number of macroblock rows at the top which are skipped.
+ * - encoding: unused
+ * - decoding: set by user *)
+ skip_top: integer;
+
+ (*** number of macroblock rows at the bottom which are skipped.
+ * - encoding: unused
+ * - decoding: set by user *)
+ skip_bottom: integer;
+
+ (*** profile
+ * - encoding: set by user
+ * - decoding: set by lavc *)
+ profile: integer;
+
+ (*** level
+ * - encoding: set by user
+ * - decoding: set by lavc *)
+ level: integer;
+
+ (*** low resolution decoding. 1-> 1/2 size, 2->1/4 size
+ * - encoding: unused
+ * - decoding: set by user *)
+ lowres: integer;
+
+ (*** bitsream width / height. may be different from width/height if lowres
+ * or other things are used
+ * - encoding: unused
+ * - decoding: set by user before init if known, codec should override / dynamically change if needed *)
+ coded_width, coded_height: integer;
+
+ (*** frame skip threshold
+ * - encoding: set by user
+ * - decoding: unused *)
+ frame_skip_threshold: integer;
+
+ (*** frame skip factor
+ * - encoding: set by user
+ * - decoding: unused *)
+ frame_skip_factor: integer;
+
+ (*** frame skip exponent
+ * - encoding: set by user
+ * - decoding: unused *)
+ frame_skip_exp: integer;
+
+ (*** frame skip comparission function
+ * - encoding: set by user.
+ * - decoding: unused *)
+ frame_skip_cmp: integer;
+
+ (*** border processing masking. raises the quantizer for mbs on the borders
+ * of the picture.
+ * - encoding: set by user
+ * - decoding: unused *)
+ border_masking: single;
+
+ (*** minimum MB lagrange multipler.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ mb_lmin: integer;
+
+ (*** maximum MB lagrange multipler.
+ * - encoding: set by user.
+ * - decoding: unused *)
+ mb_lmax: integer;
+
+ (***
+ * - encoding: set by user.
+ * - decoding: unused *)
+ me_penalty_compensation: integer;
+
+ (***
+ * - encoding: unused
+ * - decoding: set by user. *)
+ skip_loop_filter: TAVDiscard;
+
+ (** *
+ * - encoding: unused
+ * - decoding: set by user. *)
+ skip_idct: TAVDiscard;
+
+ (** *
+ * - encoding: unused
+ * - decoding: set by user. *)
+ skip_frame: TAVDiscard;
+
+ (** *
+ * - encoding: set by user.
+ * - decoding: unused *)
+ bidir_refine: integer;
+
+ (** *
+ * - encoding: set by user.
+ * - decoding: unused *)
+ brd_scale: integer;
+
+ (**
+ * constant rate factor - quality-based VBR - values ~correspond to qps
+ * - encoding: set by user.
+ * - decoding: unused *)
+ crf: integer;
+
+ (**
+ * constant quantization parameter rate control method
+ * - encoding: set by user.
+ * - decoding: unused *)
+ cqp: integer;
+
+ (**
+ * minimum gop size
+ * - encoding: set by user.
+ * - decoding: unused *)
+ keyint_min: integer;
+
+ (**
+ * number of reference frames
+ * - encoding: set by user.
+ * - decoding: unused *)
+ refs: integer;
+
+ (**
+ * chroma qp offset from luma
+ * - encoding: set by user.
+ * - decoding: unused *)
+ chromaoffset: integer;
+
+ (**
+ * influences how often b-frames are used
+ * - encoding: set by user.
+ * - decoding: unused *)
+ bframebias: integer;
+
+ (**
+ * trellis RD quantization
+ * - encoding: set by user.
+ * - decoding: unused *)
+ trellis: integer;
+
+ (**
+ * reduce fluctuations in qp (before curve compression)
+ * - encoding: set by user.
+ * - decoding: unused *)
+ complexityblur: single;
+
+ (**
+ * in-loop deblocking filter alphac0 parameter
+ * alpha is in the range -6...6
+ * - encoding: set by user.
+ * - decoding: unused *)
+ deblockalpha: integer;
+
+ (**
+ * in-loop deblocking filter beta parameter
+ * beta is in the range -6...6
+ * - encoding: set by user.
+ * - decoding: unused *)
+ deblockbeta: integer;
+
+ (**
+ * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4
+ * - encoding: set by user.
+ * - decoding: unused *)
+ partitions: integer;
+
+ (**
+ * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal)
+ * - encoding: set by user.
+ * - decoding: unused *)
+ directpred: integer;
+
+ (**
+ * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC
+ * - encoding: set by user.
+ * - decoding: unused *)
+ cutoff: integer;
+
+ (**
+ * multiplied by qscale for each frame and added to scene_change_score
+ * - encoding: set by user.
+ * - decoding: unused *)
+ scenechange_factor: integer;
+
+ (** *
+ * note: value depends upon the compare functin used for fullpel ME
+ * - encoding: set by user.
+ * - decoding: unused *)
+ mv0_threshold: integer;
+
+ (**
+ * adjusts sensitivity of b_frame_strategy 1
+ * - encoding: set by user.
+ * - decoding: unused *)
+ b_sensitivity: integer;
+
+ (**
+ * - encoding: set by user.
+ * - decoding: unused *)
+ compression_level: integer;
+
+ (**
+ * sets whether to use LPC mode - used by FLAC encoder
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ use_lpc: integer;
+
+ (**
+ * LPC coefficient precision - used by FLAC encoder
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ lpc_coeff_precision: integer;
+
+ (**
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ min_prediction_order: integer;
+
+ (**
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ max_prediction_order: integer;
+
+ (**
+ * search method for selecting prediction order
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ prediction_order_method: integer;
+
+ (**
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ min_partition_order: integer;
+
+ (**
+ * - encoding: set by user.
+ * - decoding: unused. *)
+ max_partition_order: integer;
+ end;
+
+(**
+ * AVCodec.
+ *)
+ TAVCodec = record
+ name: pchar;
+ _type: TCodecType;
+ id: TCodecID;
+ priv_data_size: integer;
+ init: function (avctx: pAVCodecContext): integer; cdecl;
+ encode: function (avctx: PAVCodecContext; buf: pchar; buf_size: integer; data: pointer): integer; cdecl;
+ close: function (avctx: PAVCodecContext): integer; cdecl;
+ decode: function (avctx: PAVCodecContext; outdata: pointer; outdata_size: PInteger;
+ buf: pchar; buf_size: integer): integer; cdecl;
+ capabilities: integer;
+// todo: check this ->
+// void *dummy; // FIXME remove next time we break binary compatibility
+ next: PAVCodec;
+ flush: procedure (avctx: PAVCodecContext); cdecl;
+ supported_framerates: PAVRational; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
+ pix_fmts: PAVPixelFormat; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
+ end;
+
+(**
+ * four components are given, that's all.
+ * the last component is alpha
+ *)
+ PAVPicture = ^TAVPicture;
+ TAVPicture = record
+ data: array [0..3] of pchar;
+ linesize: array [0..3] of integer; ///< number of bytes per line
+ end;
+
+(**
+ * AVPaletteControl
+ * This structure defines a method for communicating palette changes
+ * between and demuxer and a decoder.
+ * this is totally broken, palette changes should be sent as AVPackets
+ *)
+ TAVPaletteControl = record
+ (* demuxer sets this to 1 to indicate the palette has changed;
+ * decoder resets to 0 *)
+ palette_changed: integer;
+
+ (* 4-byte ARGB palette entries, stored in native byte order; note that
+ * the individual palette components should be on a 8-bit scale; if
+ * the palette data comes from a IBM VGA native format, the component
+ * data is probably 6 bits in size and needs to be scaled *)
+ palette: array [0..AVPALETTE_COUNT - 1] of cardinal;
+ end;
+
+ PAVSubtitleRect = ^TAVSubtitleRect;
+ TAVSubtitleRect = record
+ x: word;
+ y: word;
+ w: word;
+ h: word;
+ nb_colors: word;
+ linesize: integer;
+ rgba_palette: PCardinal;
+ bitmap: pchar;
+ end;
+
+ PAVSubtitle = ^TAVSubtitle;
+ TAVSubtitle = record {20}
+ format: word; (* 0 = graphics *)
+ start_display_time: cardinal; (* relative to packet pts, in ms *)
+ end_display_time: cardinal; (* relative to packet pts, in ms *)
+ num_rects: cardinal;
+ rects: PAVSubtitleRect;
+ end;
+
+
+(* resample.c *)
+
+ PReSampleContext = pointer;
+ PAVResampleContext = pointer;
+ PImgReSampleContext = pointer;
+
+function audio_resample_init (output_channels: integer; input_channels: integer;
+ output_rate: integer; input_rate: integer): PReSampleContext;
+ cdecl; external av__codec;
+
+function audio_resample (s: PReSampleContext; output: PWord; input: PWord; nb_samples: integer): integer;
+ cdecl; external av__codec;
+
+procedure audio_resample_close (s: PReSampleContext);
+ cdecl; external av__codec;
+
+
+function av_resample_init (out_rate: integer; in_rate: integer; filter_length: integer;
+ log2_phase_count: integer; linear: integer; cutoff: double): PAVResampleContext;
+ cdecl; external av__codec;
+
+function av_resample (c: PAVResampleContext; dst: PWord; src: PWord; consumed: PInteger;
+ src_size: integer; dst_size: integer; update_ctx: integer): integer;
+ cdecl; external av__codec;
+
+procedure av_resample_compensate (c: PAVResampleContext; sample_delta: integer;
+ compensation_distance: integer);
+ cdecl; external av__codec;
+
+procedure av_resample_close (c: PAVResampleContext);
+ cdecl; external av__codec;
+
+
+(* YUV420 format is assumed ! *)
+
+ function img_resample_init (output_width: integer; output_height: integer;
+ input_width: integer; input_height: integer): PImgReSampleContext;
+ cdecl; external av__codec;
+
+ function img_resample_full_init (owidth: integer; oheight: integer;
+ iwidth: integer; iheight: integer;
+ topBand: integer; bottomBand: integer;
+ leftBand: integer; rightBand: integer;
+ padtop: integer; padbottom: integer;
+ padleft: integer; padright: integer): PImgReSampleContext;
+ cdecl; external av__codec;
+
+ procedure img_resample (s: PImgReSampleContext; output: PAVPicture; const input: PAVPicture);
+ cdecl; external av__codec;
+
+ procedure img_resample_close (s: PImgReSampleContext);
+ cdecl; external av__codec;
+
+(**
+ * Allocate memory for a picture. Call avpicture_free to free it.
+ *
+ * @param picture the picture to be filled in.
+ * @param pix_fmt the format of the picture.
+ * @param width the width of the picture.
+ * @param height the height of the picture.
+ * @return 0 if successful, -1 if not.
+ *)
+ function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat;
+ width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+
+(* Free a picture previously allocated by avpicture_alloc. *)
+ procedure avpicture_free (picture: PAVPicture);
+ cdecl; external av__codec;
+
+ function avpicture_fill (picture: PAVPicture; ptr: pointer;
+ pix_fmt: TAVPixelFormat; width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+ function avpicture_layout (const src: PAVPicture; pix_fmt: TAVPixelFormat;
+ width: integer; height: integer;
+ dest: pchar; dest_size: integer): integer;
+ cdecl; external av__codec;
+
+ function avpicture_get_size (pix_fmt: TAVPixelFormat; width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+ procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; h_shift: Pinteger; v_shift: pinteger);
+ cdecl; external av__codec;
+
+ function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): pchar;
+ cdecl; external av__codec;
+
+ procedure avcodec_set_dimensions(s: PAVCodecContext; width: integer; height: integer);
+ cdecl; external av__codec;
+
+ function avcodec_get_pix_fmt(const name: pchar): TAVPixelFormat;
+ cdecl; external av__codec;
+
+ function avcodec_pix_fmt_to_codec_tag(p: TAVPixelFormat): cardinal;
+ cdecl; external av__codec;
+
+ function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat;
+ has_alpha: integer): integer;
+ cdecl; external av__codec;
+
+ function avcodec_find_best_pix_fmt (pix_fmt_mask: integer; src_pix_fmt: TAVPixelFormat;
+ has_alpha: integer; loss_ptr: pinteger): integer;
+ cdecl; external av__codec;
+
+ function img_get_alpha_info (const src: PAVPicture;
+ pix_fmt: TAVPixelFormat;
+ width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+
+(* convert among pixel formats *)
+ function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat;
+ const src: PAVPicture; pix_fmt: TAVPixelFormat;
+ width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+(* deinterlace a picture *)
+ function avpicture_deinterlace (dst: PAVPicture; const src: PAVPicture;
+ pix_fmt: TAVPixelFormat; width: integer; height: integer): integer;
+ cdecl; external av__codec;
+
+(* returns LIBAVCODEC_VERSION_INT constant *)
+ function avcodec_version (): cardinal;
+ cdecl; external av__codec;
+
+(* returns LIBAVCODEC_BUILD constant *)
+ function avcodec_build (): cardinal;
+ cdecl; external av__codec;
+
+ procedure avcodec_init ();
+ cdecl; external av__codec;
+
+ procedure register_avcodec (format: PAVCodec);
+ cdecl; external av__codec;
+
+ function avcodec_find_encoder (id: TCodecID): PAVCodec;
+ cdecl; external av__codec;
+ function avcodec_find_encoder_by_name (name: pchar): PAVCodec;
+ cdecl; external av__codec;
+ function avcodec_find_decoder(id: TCodecID): PAVCodec;
+ cdecl; external av__codec;
+ function avcodec_find_decoder_by_name (name: pchar): PAVCodec;
+ cdecl; external av__codec;
+ procedure avcodec_string(buf: pchar; buf_size: integer; enc: PAVCodecContext; encode: integer);
+ cdecl; external av__codec;
+
+ procedure avcodec_get_context_defaults (s: PAVCodecContext);
+ cdecl; external av__codec;
+ function avcodec_alloc_context (): PAVCodecContext;
+ cdecl; external av__codec;
+ procedure avcodec_get_frame_defaults (pic: PAVFrame);
+ cdecl; external av__codec;
+ function avcodec_alloc_frame (): PAVFrame;
+ cdecl; external av__codec;
+
+ function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): integer;
+ cdecl; external av__codec;
+ procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame);
+ cdecl; external av__codec;
+ function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): integer;
+ cdecl; external av__codec;
+ procedure avcodec_align_dimensions(s: PAVCodecContext; width: Pinteger; height: PInteger);
+ cdecl; external av__codec;
+ function avcodec_check_dimensions (av_log_ctx: pointer; w: cardinal; h: cardinal): integer;
+ cdecl; external av__codec;
+ function avcodec_default_get_format(s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat;
+ cdecl; external av__codec;
+
+ function avcodec_thread_init (s: PAVCodecContext; thread_count: integer): integer;
+ cdecl; external av__codec;
+ procedure avcodec_thread_free (s: PAVCodecContext);
+ cdecl; external av__codec;
+ function avcodec_thread_execute (s: PAVCodecContext; func: pointer; arg: PPointer; ret: Pinteger; count: integer): integer;
+ cdecl; external av__codec;
+ function avcodec_default_execute (s: PAVCodecContext; func: pointer; arg: PPointer; ret: Pinteger; count: integer): integer;
+ cdecl; external av__codec;
+
+
+//FIXME func typedef
+
+(**
+ * opens / inits the AVCodecContext.
+ * not thread save!
+ *)
+ function avcodec_open (avctx: PAVCodecContext; codec: PAVCodec): integer;
+ cdecl; external av__codec;
+
+
+(**
+ * Decode an audio frame.
+ *
+ * @param avctx the codec context.
+ * @param samples output buffer, 16 byte aligned
+ * @param frame_size_ptr the output buffer size in bytes, zero if no frame could be compressed
+ * @param buf input buffer, 16 byte aligned
+ * @param buf_size the input buffer size
+ * @return 0 if successful, -1 if not.
+ *)
+
+ function avcodec_decode_audio (avctx: PAVCodecContext; samples: Pword;
+ frame_size_ptr: pinteger;
+ buf: pchar; buf_size: integer): integer;
+ cdecl; external av__codec;
+(* decode a frame.
+ * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
+ * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
+ * @param buf_size the size of the buffer in bytes
+ * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
+ * @return -1 if error, otherwise return the number of
+ * bytes used. *)
+ function avcodec_decode_video (avctx: PAVCodecContext; picture: PAVFrame;
+ got_picture_ptr: pinteger;
+ buf: PByte; buf_size: integer): integer;
+ cdecl; external av__codec;
+
+ function avcodec_decode_subtitle (avctx: PAVCodecContext; sub: PAVSubtitle;
+ got_sub_ptr: pinteger;
+ const buf: pchar; buf_size: integer): integer;
+ cdecl; external av__codec;
+ function avcodec_parse_frame (avctx: PAVCodecContext; pdata: PPointer;
+ data_size_ptr: pinteger;
+ buf: pchar; buf_size: integer): integer;
+ cdecl; external av__codec;
+
+ function avcodec_encode_audio (avctx: PAVCodecContext; buf: PByte;
+ buf_size: integer; const samples: Pword): integer;
+ cdecl; external av__codec;
+
+ (* avcodec_encode_video: -1 if error *)
+ function avcodec_encode_video (avctx: PAVCodecContext; buf: pointer;
+ buf_size: integer; pict: PAVFrame): integer;
+ cdecl; external av__codec;
+ function avcodec_encode_subtitle (avctx: PAVCodecContext; buf: pchar;
+ buf_size: integer; const sub: PAVSubtitle): integer;
+ cdecl; external av__codec;
+ function avcodec_close (avctx: PAVCodecContext): integer;
+ cdecl; external av__codec;
+
+ procedure avcodec_register_all ();
+ cdecl; external av__codec;
+
+ procedure avcodec_flush_buffers (avctx: PAVCodecContext);
+ cdecl; external av__codec;
+ procedure avcodec_default_free_buffers (s: PAVCodecContext);
+ cdecl; external av__codec;
+
+(* misc usefull functions *)
+
+(**
+ * returns a single letter to describe the picture type
+ *)
+ function av_get_pict_type_char (pict_type: integer): char;
+ cdecl; external av__codec;
+
+
+(**
+ * returns codec bits per sample
+ *)
+function av_get_bits_per_sample (codec_id: TCodecID): integer;
+ cdecl; external av__codec;
+
+const
+ AV_PARSER_PTS_NB = 4;
+ PARSER_FLAG_COMPLETE_FRAMES = $0001;
+
+type
+ PAVCodecParserContext = ^TAVCodecParserContext;
+ PAVCodecParser = ^TAVCodecParser;
+
+ TAVCodecParserContext = record
+ priv_data: pointer;
+ parser: PAVCodecParser;
+ frame_offset: int64; (* offset of the current frame *)
+ cur_offset: int64; (* current offset (incremented by each av_parser_parse()) *)
+ last_frame_offset: int64; (* offset of the last frame *)
+ (* video info *)
+ pict_type: integer; (* XXX: put it back in AVCodecContext *)
+ repeat_pict: integer; (* XXX: put it back in AVCodecContext *)
+ pts: int64; (* pts of the current frame *)
+ dts: int64; (* dts of the current frame *)
+
+ (* private data *)
+ last_pts: int64;
+ last_dts: int64;
+ fetch_timestamp: integer;
+
+ cur_frame_start_index: integer;
+ cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of int64;
+ cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of int64;
+ cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of int64;
+
+ flags: integer;
+ end;
+
+ TAVCodecParser = record
+ codec_ids: array [0..4] of integer; (* several codec IDs are permitted *)
+ priv_data_size: integer;
+ parser_init: function (s: PAVCodecParserContext): integer; cdecl;
+ parser_parse: function (s: PAVCodecParserContext; avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: PInteger;
+ const buf: pchar; buf_size: integer): integer; cdecl;
+ parser_close: procedure (s: PAVCodecParserContext); cdecl;
+ split: function (avctx: PAVCodecContext; const buf: pchar;
+ buf_size: integer): integer; cdecl;
+ next: PAVCodecParser;
+ end;
+
+ procedure av_register_codec_parser (parser: PAVCodecParser); cdecl;
+ cdecl; external av__codec;
+
+ function av_parser_init (codec_id: integer): PAVCodecParserContext;
+ cdecl; external av__codec;
+
+ function av_parser_parse (s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: pinteger;
+ const buf: pchar; buf_size: integer;
+ pts: int64; dts: int64): integer;
+ cdecl; external av__codec;
+ function av_parser_change (s: PAVCodecParserContext;
+ avctx: PAVCodecContext;
+ poutbuf: PPointer; poutbuf_size: PInteger;
+ const buf: pchar; buf_size: integer; keyframe: integer): integer;
+ cdecl; external av__codec;
+ procedure av_parser_close (s: PAVCodecParserContext);
+ cdecl; external av__codec;
+
+type
+ PAVBitStreamFilterContext = ^TAVBitStreamFilterContext;
+ PAVBitStreamFilter = ^TAVBitStreamFilter;
+
+ TAVBitStreamFilterContext = record
+ priv_data: pointer;
+ filter: PAVBitStreamFilter;
+ parser: PAVCodecParserContext;
+ next: PAVBitStreamFilterContext;
+ end;
+
+ TAVBitStreamFilter = record
+ name: pchar;
+ priv_data_size: integer;
+ filter: function (bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: pchar;
+ poutbuf: PPointer; poutbuf_size: PInteger;
+ buf: PByte; buf_size: integer; keyframe: integer): integer; cdecl;
+ next: PAVBitStreamFilter;
+ end;
+
+procedure av_register_bitstream_filter (bsf: PAVBitStreamFilter);
+ cdecl; external av__codec;
+
+function av_bitstream_filter_init (name: pchar): PAVBitStreamFilterContext;
+ cdecl; external av__codec;
+
+function av_bitstream_filter_filter (bsfc: PAVBitStreamFilterContext;
+ avctx: PAVCodecContext; args: pchar;
+ poutbuf: PPointer; poutbuf_size: PInteger;
+ buf: PByte; buf_size: integer; keyframe: integer): integer;
+ cdecl; external av__codec;
+procedure av_bitstream_filter_close (bsf: PAVBitStreamFilterContext);
+ cdecl; external av__codec;
+
+
+(* memory *)
+ procedure av_fast_realloc (ptr: pointer; size: PCardinal; min_size: Cardinal);
+ cdecl; external av__codec;
+(* for static data only *)
+(* call av_free_static to release all staticaly allocated tables *)
+ procedure av_free_static ();
+ cdecl; external av__codec;
+
+ procedure av_mallocz_static(size: cardinal);
+ cdecl; external av__codec;
+
+ procedure av_realloc_static(ptr: pointer; size: Cardinal);
+ cdecl; external av__codec;
+
+ procedure img_copy (dst: PAVPicture; const src: PAVPicture;
+ pix_fmt: TAVPixelFormat; width: integer; height: integer);
+ cdecl; external av__codec;
+
+ function img_crop (dst: PAVPicture; const src: PAVPicture;
+ pix_fmt: TAVPixelFormat; top_band, left_band: integer): integer;
+ cdecl; external av__codec;
+
+ function img_pad (dst: PAVPicture; const src: PAVPicture; height, width: integer;
+ pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: integer;
+ color: PInteger): integer;
+ cdecl; external av__codec;
+
+implementation
+
+end.
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