From 89ac41a2ccb85d6dfccb501ff4877231cab72094 Mon Sep 17 00:00:00 2001 From: tobigun Date: Tue, 5 Feb 2008 13:43:38 +0000 Subject: Update of the ffmpeg headers to their current trunk versions. IMPORTANT: parameter of av_free_packet is a pointer now procedure av_free_packet (pkt: PAVPacket); as it is with av_free() and av_freep() git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@814 b956fd51-792f-4845-bead-9b4dfca2ff2c --- Game/Code/lib/ffmpeg/avcodec.pas | 5251 +++++++++++++++++++++++--------------- 1 file changed, 3217 insertions(+), 2034 deletions(-) (limited to 'Game/Code/lib/ffmpeg/avcodec.pas') diff --git a/Game/Code/lib/ffmpeg/avcodec.pas b/Game/Code/lib/ffmpeg/avcodec.pas index f5646fd8..dffe284e 100644 --- a/Game/Code/lib/ffmpeg/avcodec.pas +++ b/Game/Code/lib/ffmpeg/avcodec.pas @@ -1,2034 +1,3217 @@ - (* - * copyright (c) 2001 Fabrice Bellard - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - *) - -(* This is a part of Pascal porting of ffmpeg. Originally by Victor Zinetz for Delphi and Free Pascal on Windows. -For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT -in the source codes *) - -unit avcodec; - -{$IFDEF FPC} - {$IFDEF LINUX} - {$LINKLIB libavutil} - {$LINKLIB libavcodec} - {$ENDIF} - - {$MODE DELPHI } (* CAT *) - {$PACKENUM 4} (* every enum type variables uses 4 bytes, CAT *) - {$PACKRECORDS C} (* GCC compatible, Record Packing, CAT *) -{$ENDIF} - -interface - -uses - avutil, rational, opt; // CAT - -{$I version.inc} - -const - AV_NOPTS_VALUE: int64 = $8000000000000000; - AV_TIME_BASE = 1000000; - AV_TIME_BASE_Q : TAVRational = (num:1; den:AV_TIME_BASE); (* added by CAT *) - -type - TCodecID = ( - CODEC_ID_NONE, CODEC_ID_MPEG1VIDEO, - CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1 or 2 decoding */ - CODEC_ID_MPEG2VIDEO_XVMC, CODEC_ID_H261, CODEC_ID_H263, CODEC_ID_RV10, - CODEC_ID_RV20, CODEC_ID_MJPEG, CODEC_ID_MJPEGB, CODEC_ID_LJPEG, - CODEC_ID_SP5X, CODEC_ID_JPEGLS, CODEC_ID_MPEG4, CODEC_ID_RAWVIDEO, - CODEC_ID_MSMPEG4V1, CODEC_ID_MSMPEG4V2, CODEC_ID_MSMPEG4V3, - CODEC_ID_WMV1, CODEC_ID_WMV2, CODEC_ID_H263P, - CODEC_ID_H263I, CODEC_ID_FLV1, CODEC_ID_SVQ1, CODEC_ID_SVQ3, - CODEC_ID_DVVIDEO, CODEC_ID_HUFFYUV, CODEC_ID_CYUV, CODEC_ID_H264, - CODEC_ID_INDEO3, CODEC_ID_VP3, CODEC_ID_THEORA, CODEC_ID_ASV1, - CODEC_ID_ASV2, CODEC_ID_FFV1, CODEC_ID_4XM, CODEC_ID_VCR1, - CODEC_ID_CLJR, CODEC_ID_MDEC, CODEC_ID_ROQ, CODEC_ID_INTERPLAY_VIDEO, - CODEC_ID_XAN_WC3, CODEC_ID_XAN_WC4, CODEC_ID_RPZA, CODEC_ID_CINEPAK, - CODEC_ID_WS_VQA, CODEC_ID_MSRLE, CODEC_ID_MSVIDEO1, CODEC_ID_IDCIN, - CODEC_ID_8BPS, CODEC_ID_SMC, CODEC_ID_FLIC, CODEC_ID_TRUEMOTION1, - CODEC_ID_VMDVIDEO, CODEC_ID_MSZH, CODEC_ID_ZLIB, CODEC_ID_QTRLE, - CODEC_ID_SNOW, CODEC_ID_TSCC, CODEC_ID_ULTI, CODEC_ID_QDRAW, - CODEC_ID_VIXL, CODEC_ID_QPEG, CODEC_ID_XVID, CODEC_ID_PNG, - CODEC_ID_PPM, CODEC_ID_PBM, CODEC_ID_PGM, CODEC_ID_PGMYUV, - CODEC_ID_PAM, CODEC_ID_FFVHUFF, CODEC_ID_RV30, CODEC_ID_RV40, - CODEC_ID_VC1, CODEC_ID_WMV3, CODEC_ID_LOCO, CODEC_ID_WNV1, - CODEC_ID_AASC, CODEC_ID_INDEO2, CODEC_ID_FRAPS, CODEC_ID_TRUEMOTION2, - CODEC_ID_BMP, CODEC_ID_CSCD, CODEC_ID_MMVIDEO, CODEC_ID_ZMBV, - CODEC_ID_AVS, CODEC_ID_SMACKVIDEO, CODEC_ID_NUV, CODEC_ID_KMVC, - CODEC_ID_FLASHSV, CODEC_ID_CAVS, CODEC_ID_JPEG2000, CODEC_ID_VMNC, - CODEC_ID_VP5, CODEC_ID_VP6, CODEC_ID_VP6F, - - //* various pcm "codecs" */ - CODEC_ID_PCM_S16LE= $10000, CODEC_ID_PCM_S16BE, CODEC_ID_PCM_U16LE, - CODEC_ID_PCM_U16BE, CODEC_ID_PCM_S8, CODEC_ID_PCM_U8, CODEC_ID_PCM_MULAW, - CODEC_ID_PCM_ALAW, CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE, CODEC_ID_PCM_U32LE, - CODEC_ID_PCM_U32BE, CODEC_ID_PCM_S24LE, CODEC_ID_PCM_S24BE, CODEC_ID_PCM_U24LE, - CODEC_ID_PCM_U24BE, CODEC_ID_PCM_S24DAUD, - //* various adpcm codecs */ - CODEC_ID_ADPCM_IMA_QT= $11000, CODEC_ID_ADPCM_IMA_WAV, CODEC_ID_ADPCM_IMA_DK3, - CODEC_ID_ADPCM_IMA_DK4, CODEC_ID_ADPCM_IMA_WS, CODEC_ID_ADPCM_IMA_SMJPEG, - CODEC_ID_ADPCM_MS, CODEC_ID_ADPCM_4XM, CODEC_ID_ADPCM_XA, CODEC_ID_ADPCM_ADX, - CODEC_ID_ADPCM_EA, CODEC_ID_ADPCM_G726, CODEC_ID_ADPCM_CT, CODEC_ID_ADPCM_SWF, - CODEC_ID_ADPCM_YAMAHA, CODEC_ID_ADPCM_SBPRO_4, CODEC_ID_ADPCM_SBPRO_3, - CODEC_ID_ADPCM_SBPRO_2, - //* AMR */ - CODEC_ID_AMR_NB= $12000, CODEC_ID_AMR_WB, - //* RealAudio codecs*/ - CODEC_ID_RA_144= $13000, CODEC_ID_RA_288, - //* various DPCM codecs */ - CODEC_ID_ROQ_DPCM= $14000, CODEC_ID_INTERPLAY_DPCM, CODEC_ID_XAN_DPCM, - CODEC_ID_SOL_DPCM, CODEC_ID_MP2= $15000, - CODEC_ID_MP3, //* prefered ID for MPEG Audio layer 1, 2 or3 decoding */ - CODEC_ID_AAC, CODEC_ID_MPEG4AAC, CODEC_ID_AC3, CODEC_ID_DTS, CODEC_ID_VORBIS, - CODEC_ID_DVAUDIO, CODEC_ID_WMAV1, CODEC_ID_WMAV2, CODEC_ID_MACE3, - CODEC_ID_MACE6, CODEC_ID_VMDAUDIO, CODEC_ID_SONIC, CODEC_ID_SONIC_LS, - CODEC_ID_FLAC, CODEC_ID_MP3ADU, CODEC_ID_MP3ON4, CODEC_ID_SHORTEN, - CODEC_ID_ALAC, CODEC_ID_WESTWOOD_SND1, CODEC_ID_GSM, CODEC_ID_QDM2, - CODEC_ID_COOK, CODEC_ID_TRUESPEECH, CODEC_ID_TTA, CODEC_ID_SMACKAUDIO, - CODEC_ID_QCELP, CODEC_ID_WAVPACK, - //* subtitle codecs */ - CODEC_ID_DVD_SUBTITLE= $17000, CODEC_ID_DVB_SUBTITLE, - - CODEC_ID_MPEG2TS= $20000 //* _FAKE_ codec to indicate a raw MPEG2 transport - // stream (only used by libavformat) */ - ); - -//* CODEC_ID_MP3LAME is absolete */ -const - CODEC_ID_MP3LAME = CODEC_ID_MP3; - - AVPALETTE_SIZE = 1024; - AVPALETTE_COUNT = 256; - -type - TCodecType = ( - CODEC_TYPE_UNKNOWN = -1, - CODEC_TYPE_VIDEO, - CODEC_TYPE_AUDIO, - CODEC_TYPE_DATA, - CODEC_TYPE_SUBTITLE, - CODEC_TYPE_NB (* CAT#3 *) - ); - -//* currently unused, may be used if 24/32 bits samples ever supported */ -//* all in native endian */ - TSampleFormat = ( - SAMPLE_FMT_NONE = -1, - SAMPLE_FMT_U8, ///< unsigned 8 bits - SAMPLE_FMT_S16, ///< signed 16 bits - SAMPLE_FMT_S24, ///< signed 24 bits - SAMPLE_FMT_S32, ///< signed 32 bits - SAMPLE_FMT_FLT ///< float - ); - -const -//* in bytes */ - AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio - -(** - * Required number of additionally allocated bytes at the end of the input bitstream for decoding. - * this is mainly needed because some optimized bitstream readers read - * 32 or 64 bit at once and could read over the end
- * Note, if the first 23 bits of the additional bytes are not 0 then damaged - * MPEG bitstreams could cause overread and segfault - *) - FF_INPUT_BUFFER_PADDING_SIZE = 8; - -(** - * minimum encoding buffer size. - * used to avoid some checks during header writing - *) - FF_MIN_BUFFER_SIZE = 16384; - -type -//* motion estimation type, EPZS by default */ - TMotion_Est_ID = ( - ME_ZERO = 1, - ME_FULL, - ME_LOG, - ME_PHODS, - ME_EPZS, - ME_X1, - ME_HEX, - ME_UMH, - ME_ITER - ); - - TAVDiscard = ( -//we leave some space between them for extensions (drop some keyframes for intra only or drop just some bidir frames) - AVDISCARD_NONE = -16, ///< discard nothing - AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi - AVDISCARD_NONREF = 8, ///< discard all non reference - AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames - AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes - AVDISCARD_ALL = 48, ///< discard all - AVDISCARD_FUCK = $FFFFFF - ); - - PRcOverride = ^TRcOverride; - TRcOverride = record {16} - start_frame: integer; - end_frame: integer; - qscale: integer; // if this is 0 then quality_factor will be used instead - quality_factor: single; - end; - -const - FF_MAX_B_FRAMES = 16; - -(* encoding support - these flags can be passed in AVCodecContext.flags before initing - Note: not everything is supported yet. -*) - - CODEC_FLAG_QSCALE = $0002; ///< use fixed qscale - CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / Advanced prediction for H263 - CODEC_FLAG_QPEL = $0010; ///< use qpel MC - CODEC_FLAG_GMC = $0020; ///< use GMC - CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0> - CODEC_FLAG_PART = $0080; ///< use data partitioning -//* parent program gurantees that the input for b-frame containing streams is not written to -// for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */ - CODEC_FLAG_INPUT_PRESERVED = $0100; - CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode - CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode - CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg) - CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale - CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges - CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding - CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random location instead - // of only at frame boundaries */ - CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization - CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct - CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay - CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan - CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization - CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe - CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct) -//* Fx : Flag for h263+ extra options */ - CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this) - CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction - CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector - CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp - CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon - CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc - CODEC_FLAG_OBMC = $00000001; ///< OBMC - CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter - CODEC_FLAG_H263P_SLICE_STRUCT = $10000000; - CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation - CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data - CODEC_FLAG_CLOSED_GOP = $80000000; - CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks - CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size - CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding - CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata - CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references - CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames - CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition - CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform - CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip - CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters - CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization - CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table - CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC) - -(* Unsupported options : - * Syntax Arithmetic coding (SAC) - * Reference Picture Selection - * Independant Segment Decoding */ -/* /Fx */ -/* codec capabilities *) - -const - CODEC_CAP_DRAW_HORIZ_BAND = $001; ///< decoder can use draw_horiz_band callback -(** - * Codec uses get_buffer() for allocating buffers. - * direct rendering method 1 *) - CODEC_CAP_DR1 = $002; -(* if 'parse_only' field is true, then avcodec_parse_frame() can be used *) - CODEC_CAP_PARSE_ONLY = $004; - CODEC_CAP_TRUNCATED = $008; -//* codec can export data for HW decoding (XvMC) */ - CODEC_CAP_HWACCEL = $010; - -(** - * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data. - * if this is not set, the codec is guranteed to never be feeded with NULL data *) - CODEC_CAP_DELAY = $0020; -(** - * Codec can be fed a final frame with a smaller size. - * This can be used to prevent truncation of the last audio samples. *) - CODEC_CAP_SMALL_LAST_FRAME = $0040; - -//the following defines may change, don't expect compatibility if you use them - MB_TYPE_INTRA4x4 = $001; - MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific - MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific - MB_TYPE_16x16 = $008; - MB_TYPE_16x8 = $010; - MB_TYPE_8x16 = $020; - MB_TYPE_8x8 = $040; - MB_TYPE_INTERLACED = $080; - MB_TYPE_DIRECT2 = $100; //FIXME - MB_TYPE_ACPRED = $200; - MB_TYPE_GMC = $400; - MB_TYPE_SKIP = $800; - MB_TYPE_P0L0 = $1000; - MB_TYPE_P1L0 = $2000; - MB_TYPE_P0L1 = $4000; - MB_TYPE_P1L1 = $8000; - MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0); - MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1); - MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1); - MB_TYPE_QUANT = $0010000; - MB_TYPE_CBP = $0020000; -//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) - -type -(** - * Pan Scan area. - * this specifies the area which should be displayed. Note there may be multiple such areas for one frame *) - PAVPanScan = ^TAVPanScan; - TAVPanScan = record {24} - (*** id. - * - encoding: set by user. - * - decoding: set by lavc *) - id: integer; - - (*** width and height in 1/16 pel - * - encoding: set by user. - * - decoding: set by lavc *) - width: integer; - height: integer; - - (*** position of the top left corner in 1/16 pel for up to 3 fields/frames. - * - encoding: set by user. - * - decoding: set by lavc *) - position: array [0..2] of array [0..1] of smallint; - end; - -const - FF_QSCALE_TYPE_MPEG1 = 0; - FF_QSCALE_TYPE_MPEG2 = 1; - - FF_BUFFER_TYPE_INTERNAL = 1; - FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user) - FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared - FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything - - - FF_I_TYPE = 1; // Intra - FF_P_TYPE = 2; // Predicted - FF_B_TYPE = 3; // Bi-dir predicted - FF_S_TYPE = 4; // S(GMC)-VOP MPEG4 - FF_SI_TYPE = 5; - FF_SP_TYPE = 6; - - FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore) - FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer - FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content - FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update) - -type - (*** Audio Video Frame. *) - PAVFrame = ^TAVFrame; - TAVFrame = record {200} - (*** pointer to the picture planes. - * this might be different from the first allocated byte *) - data: array [0..3] of pbyte; - linesize: array [0..3] of integer; - (*** pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer - * this isn't used by lavc unless the default get/release_buffer() is used*) - base: array [0..3] of pbyte; - (*** 1 -> keyframe, 0-> not *) - key_frame: integer; - (*** picture type of the frame, see ?_TYPE below.*) - pict_type: integer; - (*** presentation timestamp in time_base units (time when frame should be shown to user) - * if AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed*) - pts: int64; - (*** picture number in bitstream order.*) - coded_picture_number: integer; - (*** picture number in display order.*) - display_picture_number: integer; - (*** quality (between 1 (good) and FF_LAMBDA_MAX (bad)) *) - quality: integer; - (*** buffer age (1->was last buffer and dint change, 2->..., ...).*) - age: integer; - (*** is this picture used as reference*) - reference: integer; - (*** QP table*) - qscale_table: pchar; - (*** QP store stride*) - qstride: integer; - (*** mbskip_table[mb]>=1 if MB didnt change*) - mbskip_table: pbyte; - (** - * Motion vector table. - * @code - * example: - * int mv_sample_log2= 4 - motion_subsample_log2; - * int mb_width= (width+15)>>4; - * int mv_stride= (mb_width << mv_sample_log2) + 1; - * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y]; - * @endcode - * - encoding: set by user - * - decoding: set by lavc *) - motion_val: array [0..1] of pointer; - (*** Macroblock type table - * mb_type_base + mb_width + 2 *) - mb_type: PCardinal; - (*** log2 of the size of the block which a single vector in motion_val represents: - * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2)*) - motion_subsample_log2: byte; - (*** for some private data of the user*) - opaque: pointer; - (*** error*) - error: array [0..3] of int64; - (*** type of the buffer (to keep track of who has to dealloc data[*]) - * Note: user allocated (direct rendering) & internal buffers can not coexist currently*) - _type: integer; - (*** when decoding, this signal how much the picture must be delayed. - * extra_delay = repeat_pict / (2*fps)*) - repeat_pict: integer; - qscale_type: integer; - (*** The content of the picture is interlaced.*) - interlaced_frame: integer; - (*** if the content is interlaced, is top field displayed first.*) - top_field_first: integer; - (*** Pan scan.*) - pan_scan: PAVPanScan; - (*** tell user application that palette has changed from previous frame.*) - palette_has_changed: integer; - (*** Codec suggestion on buffer type if != 0 - * - decoding: set by lavc (before get_buffer() call))*) - buffer_hints: integer; - (*** DCT coeffitients*) - dct_coeff: PsmallInt; - (*** Motion referece frame index*) - ref_index: array [0..1] of pshortint; - end; - -const - DEFAULT_FRAME_RATE_BASE = 1001000; - - FF_BUG_AUTODETECT = 1; ///< autodetection - FF_BUG_OLD_MSMPEG4 = 2; - FF_BUG_XVID_ILACE = 4; - FF_BUG_UMP4 = 8; - FF_BUG_NO_PADDING = 16; - FF_BUG_AMV = 32; - FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default - FF_BUG_QPEL_CHROMA = 64; - FF_BUG_STD_QPEL = 128; - FF_BUG_QPEL_CHROMA2 = 256; - FF_BUG_DIRECT_BLOCKSIZE = 512; - FF_BUG_EDGE = 1024; - FF_BUG_HPEL_CHROMA = 2048; - FF_BUG_DC_CLIP = 4096; - FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders - - FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to a older more strict version of the spec or reference software - FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences - FF_COMPLIANCE_NORMAL = 0; - FF_COMPLIANCE_INOFFICIAL = -1; ///< allow inofficial extensions - FF_COMPLIANCE_EXPERIMENTAL = -2; ///< allow non standarized experimental things - - FF_ER_CAREFUL = 1; - FF_ER_COMPLIANT = 2; - FF_ER_AGGRESSIVE = 3; - FF_ER_VERY_AGGRESSIVE = 4; - - FF_DCT_AUTO = 0; - FF_DCT_FASTINT = 1; - FF_DCT_INT = 2; - FF_DCT_MMX = 3; - FF_DCT_MLIB = 4; - FF_DCT_ALTIVEC = 5; - FF_DCT_FAAN = 6; - - FF_IDCT_AUTO = 0; - FF_IDCT_INT = 1; - FF_IDCT_SIMPLE = 2; - FF_IDCT_SIMPLEMMX = 3; - FF_IDCT_LIBMPEG2MMX = 4; - FF_IDCT_PS2 = 5; - FF_IDCT_MLIB = 6; - FF_IDCT_ARM = 7; - FF_IDCT_ALTIVEC = 8; - FF_IDCT_SH4 = 9; - FF_IDCT_SIMPLEARM = 10; - FF_IDCT_H264 = 11; - FF_IDCT_VP3 = 12; - FF_IDCT_IPP = 13; - FF_IDCT_XVIDMMX = 14; - - FF_EC_GUESS_MVS = 1; - FF_EC_DEBLOCK = 2; - - FF_MM_FORCE = $80000000; (* force usage of selected flags (OR) *) - (* lower 16 bits - CPU features *) - - FF_MM_MMX = $0001; (* standard MMX *) - FF_MM_3DNOW = $0004; (* AMD 3DNOW *) - FF_MM_MMXEXT = $0002; (* SSE integer functions or AMD MMX ext *) - FF_MM_SSE = $0008; (* SSE functions *) - FF_MM_SSE2 = $0010; (* PIV SSE2 functions *) - FF_MM_3DNOWEXT = $0020; (* AMD 3DNowExt *) - FF_MM_IWMMXT = $0100; (* XScale IWMMXT *) - - FF_PRED_LEFT = 0; - FF_PRED_PLANE = 1; - FF_PRED_MEDIAN = 2; - - FF_DEBUG_PICT_INFO = 1; - FF_DEBUG_RC = 2; - FF_DEBUG_BITSTREAM = 4; - FF_DEBUG_MB_TYPE = 8; - FF_DEBUG_QP = 16; - FF_DEBUG_MV = 32; - FF_DEBUG_DCT_COEFF = $00000040; - FF_DEBUG_SKIP = $00000080; - FF_DEBUG_STARTCODE = $00000100; - FF_DEBUG_PTS = $00000200; - FF_DEBUG_ER = $00000400; - FF_DEBUG_MMCO = $00000800; - FF_DEBUG_BUGS = $00001000; - FF_DEBUG_VIS_QP = $00002000; - FF_DEBUG_VIS_MB_TYPE = $00004000; - - FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames - FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames - FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames - - FF_CMP_SAD = 0; - FF_CMP_SSE = 1; - FF_CMP_SATD = 2; - FF_CMP_DCT = 3; - FF_CMP_PSNR = 4; - FF_CMP_BIT = 5; - FF_CMP_RD = 6; - FF_CMP_ZERO = 7; - FF_CMP_VSAD = 8; - FF_CMP_VSSE = 9; - FF_CMP_NSSE = 10; - FF_CMP_W53 = 11; - FF_CMP_W97 = 12; - FF_CMP_DCTMAX = 13; - FF_CMP_CHROMA = 256; - - FF_DTG_AFD_SAME = 8; - FF_DTG_AFD_4_3 = 9; - FF_DTG_AFD_16_9 = 10; - FF_DTG_AFD_14_9 = 11; - FF_DTG_AFD_4_3_SP_14_9 = 13; - FF_DTG_AFD_16_9_SP_14_9 = 14; - FF_DTG_AFD_SP_4_3 = 15; - - FF_DEFAULT_QUANT_BIAS = 999999; - - FF_LAMBDA_SHIFT = 7; - FF_LAMBDA_SCALE = (1 shl FF_LAMBDA_SHIFT); - FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda - FF_LAMBDA_MAX = (256 * 128 - 1); - - FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove - - FF_CODER_TYPE_VLC = 0; - FF_CODER_TYPE_AC = 1; - - SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display - SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics) - SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1) - - FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp - FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits - FF_MB_DECISION_RD = 2; ///< rate distoration - - FF_AA_AUTO = 0; - FF_AA_FASTINT = 1; //not implemented yet - FF_AA_INT = 2; - FF_AA_FLOAT = 3; - - FF_PROFILE_UNKNOWN = -99; - - FF_LEVEL_UNKNOWN = -99; - - X264_PART_I4X4 = $001; (* Analyse i4x4 *) - X264_PART_I8X8 = $002; (* Analyse i8x8 (requires 8x8 transform) *) - X264_PART_P8X8 = $010; (* Analyse p16x8, p8x16 and p8x8 *) - X264_PART_P4X4 = $020; (* Analyse p8x4, p4x8, p4x4 *) - X264_PART_B8X8 = $100; (* Analyse b16x8, b8x16 and b8x8 *) - -type - PAVClass = ^TAVClass; - PAVCodecContext = ^TAVCodecContext; - PAVCodec = ^TAVCodec; - PAVPaletteControl = ^TAVPaletteControl; - - TAVclass = record {12} - class_name: pchar; - (* actually passing a pointer to an AVCodecContext - or AVFormatContext, which begin with an AVClass. - Needed because av_log is in libavcodec and has no visibility - of AVIn/OutputFormat *) - item_name: function (): pchar; cdecl; - option: PAVOption; - end; - - TAVCodecContext = record {720} - (*** Info on struct for av_log - * - set by avcodec_alloc_context *) - av_class: PAVClass; - (*** the average bitrate. - * - encoding: set by user. unused for constant quantizer encoding - * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream *) - bit_rate: integer; - (*** number of bits the bitstream is allowed to diverge from the reference. - * the reference can be CBR (for CBR pass1) or VBR (for pass2) - * - encoding: set by user. unused for constant quantizer encoding - * - decoding: unused *) - bit_rate_tolerance: integer; - (*** CODEC_FLAG_*. - * - encoding: set by user. - * - decoding: set by user. *) - flags: integer; - (*** some codecs needs additionnal format info. It is stored here - * - encoding: set by user. - * - decoding: set by lavc. (FIXME is this ok?) *) - sub_id: integer; - - (** - * motion estimation algorithm used for video coding. - * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), - * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific] - * - encoding: MUST be set by user. - * - decoding: unused *) - me_method: integer; - - (** - * some codecs need / can use extra-data like huffman tables. - * mjpeg: huffman tables - * rv10: additional flags - * mpeg4: global headers (they can be in the bitstream or here) - * the allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger - * then extradata_size to avoid prolems if its read with the bitstream reader - * the bytewise contents of extradata must not depend on the architecture or cpu endianness - * - encoding: set/allocated/freed by lavc. - * - decoding: set/allocated/freed by user. - *) - extradata: pbyte; - extradata_size: integer; - - (** - * this is the fundamental unit of time (in seconds) in terms - * of which frame timestamps are represented. for fixed-fps content, - * timebase should be 1/framerate and timestamp increments should be - * identically 1. - * - encoding: MUST be set by user - * - decoding: set by lavc. *) - time_base: TAVRational; - - (* video only *) - (*** picture width / height. - * - encoding: MUST be set by user. - * - decoding: set by lavc. - * Note, for compatibility its possible to set this instead of - * coded_width/height before decoding *) - width, height: integer; - (*** the number of pictures in a group of pitures, or 0 for intra_only. - * - encoding: set by user. - * - decoding: unused *) - gop_size: integer; - (*** pixel format, see PIX_FMT_xxx. - * - encoding: set by user. - * - decoding: set by lavc. *) - pix_fmt: TAVPixelFormat; - (*** Frame rate emulation. If not zero lower layer (i.e. format handler) - * has to read frames at native frame rate. - * - encoding: set by user. - * - decoding: unused. *) - rate_emu: integer; - (*** if non NULL, 'draw_horiz_band' is called by the libavcodec - * decoder to draw an horizontal band. It improve cache usage. Not - * all codecs can do that. You must check the codec capabilities - * before - * - encoding: unused - * - decoding: set by user. - * @param height the height of the slice - * @param y the y position of the slice - * @param type 1->top field, 2->bottom field, 3->frame - * @param offset offset into the AVFrame.data from which the slice should be read *) - draw_horiz_band: procedure (s: PAVCodecContext; - const src: PAVFrame; offset: PInteger; - y: integer; _type: integer; height: integer); cdecl; - - (* audio only *) - sample_rate: integer; ///< samples per sec - channels: integer; - (*** audio sample format. - * - encoding: set by user. - * - decoding: set by lavc. *) - sample_fmt: TSampleFormat; ///< sample format, currenly unused - - (* the following data should not be initialized *) - (*** samples per packet. initialized when calling 'init' *) - frame_size: integer; - frame_number: integer; ///< audio or video frame number - real_pict_num: integer; ///< returns the real picture number of previous encoded frame - - (*** number of frames the decoded output will be delayed relative to - * the encoded input. - * - encoding: set by lavc. - * - decoding: unused *) - delay: integer; - - (* - encoding parameters *) - qcompress: single; ///< amount of qscale change between easy & hard scenes (0.0-1.0) - qblur: single; ///< amount of qscale smoothing over time (0.0-1.0) - - (*** minimum quantizer. - * - encoding: set by user. - * - decoding: unused *) - qmin: integer; - - (*** maximum quantizer. - * - encoding: set by user. - * - decoding: unused *) - qmax: integer; - - (*** maximum quantizer difference etween frames. - * - encoding: set by user. - * - decoding: unused *) - max_qdiff: integer; - - (*** maximum number of b frames between non b frames. - * note: the output will be delayed by max_b_frames+1 relative to the input - * - encoding: set by user. - * - decoding: unused *) - max_b_frames: integer; - - (*** qscale factor between ip and b frames. - * - encoding: set by user. - * - decoding: unused *) - b_quant_factor: single; - - (** obsolete FIXME remove *) - rc_strategy: integer; - b_frame_strategy: integer; - - (*** hurry up amount. - * deprecated in favor of skip_idct and skip_frame - * - encoding: unused - * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header *) - hurry_up: integer; - - codec: PAVCodec; - - priv_data: pointer; - - (* unused, FIXME remove*) - rtp_mode: integer; - - rtp_payload_size: integer; (* The size of the RTP payload: the coder will *) - (* do it's best to deliver a chunk with size *) - (* below rtp_payload_size, the chunk will start *) - (* with a start code on some codecs like H.263 *) - (* This doesn't take account of any particular *) - (* headers inside the transmited RTP payload *) - - - (* The RTP callback: This function is called *) - (* every time the encoder has a packet to send *) - (* Depends on the encoder if the data starts *) - (* with a Start Code (it should) H.263 does. *) - (* mb_nb contains the number of macroblocks *) - (* encoded in the RTP payload *) - rtp_callback: procedure (avctx: PAVCodecContext; data: pointer; - size: integer; mb_nb: integer); cdecl; - - (* statistics, used for 2-pass encoding *) - mv_bits: integer; - header_bits: integer; - i_tex_bits: integer; - p_tex_bits: integer; - i_count: integer; - p_count: integer; - skip_count: integer; - misc_bits: integer; - - (*** number of bits used for the previously encoded frame. - * - encoding: set by lavc - * - decoding: unused *) - frame_bits: integer; - - (*** private data of the user, can be used to carry app specific stuff. - * - encoding: set by user - * - decoding: set by user *) - opaque: pointer; - - codec_name: array [0..31] of char; - codec_type: TCodecType; (* see CODEC_TYPE_xxx *) - codec_id: TCodecID; (* see CODEC_ID_xxx *) - - (*** fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). - * this is used to workaround some encoder bugs - * - encoding: set by user, if not then the default based on codec_id will be used - * - decoding: set by user, will be converted to upper case by lavc during init *) - codec_tag: cardinal; // можно array [0..3] of char - тогда видно FOURCC -// codec_tag: array [0..3] of char; - - (*** workaround bugs in encoders which sometimes cannot be detected automatically. - * - encoding: set by user - * - decoding: set by user *) - workaround_bugs: integer; - - (*** luma single coeff elimination threshold. - * - encoding: set by user - * - decoding: unused *) - luma_elim_threshold: integer; - - (*** chroma single coeff elimination threshold. - * - encoding: set by user - * - decoding: unused *) - chroma_elim_threshold: integer; - - (*** strictly follow the std (MPEG4, ...). - * - encoding: set by user - * - decoding: unused *) - strict_std_compliance: integer; - - (*** qscale offset between ip and b frames. - * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset) - * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset) - * - encoding: set by user. - * - decoding: unused *) - b_quant_offset: single; - - (*** error resilience higher values will detect more errors but may missdetect - * some more or less valid parts as errors. - * - encoding: unused - * - decoding: set by user *) - error_resilience: integer; - - (*** called at the beginning of each frame to get a buffer for it. - * if pic.reference is set then the frame will be read later by lavc - * avcodec_align_dimensions() should be used to find the required width and - * height, as they normally need to be rounded up to the next multiple of 16 - * - encoding: unused - * - decoding: set by lavc, user can override *) - get_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; cdecl; - - (*** called to release buffers which where allocated with get_buffer. - * a released buffer can be reused in get_buffer() - * pic.data[*] must be set to NULL - * - encoding: unused - * - decoding: set by lavc, user can override *) - release_buffer: procedure (c: PAVCodecContext; pic: PAVFrame); cdecl; - - (*** if 1 the stream has a 1 frame delay during decoding. - * - encoding: set by lavc - * - decoding: set by lavc *) - has_b_frames: integer; - - (*** number of bytes per packet if constant and known or 0 - * used by some WAV based audio codecs *) - block_align: integer; - - parse_only: integer; (* - decoding only: if true, only parsing is done - (function avcodec_parse_frame()). The frame - data is returned. Only MPEG codecs support this now. *) - - (*** 0-> h263 quant 1-> mpeg quant. - * - encoding: set by user. - * - decoding: unused *) - mpeg_quant: integer; - - (*** pass1 encoding statistics output buffer. - * - encoding: set by lavc - * - decoding: unused *) - stats_out: pchar; - - (*** pass2 encoding statistics input buffer. - * concatenated stuff from stats_out of pass1 should be placed here - * - encoding: allocated/set/freed by user - * - decoding: unused *) - stats_in: pchar; - - (*** ratecontrol qmin qmax limiting method. - * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax - * - encoding: set by user. - * - decoding: unused *) - rc_qsquish: single; - - rc_qmod_amp: single; - rc_qmod_freq: integer; - - (*** ratecontrol override, see RcOverride. - * - encoding: allocated/set/freed by user. - * - decoding: unused *) - rc_override: PRcOverride; - rc_override_count: integer; - - (*** rate control equation. - * - encoding: set by user - * - decoding: unused *) - rc_eq: pchar; - - (*** maximum bitrate. - * - encoding: set by user. - * - decoding: unused *) - rc_max_rate: integer; - - (*** minimum bitrate. - * - encoding: set by user. - * - decoding: unused *) - rc_min_rate: integer; - - (*** decoder bitstream buffer size. - * - encoding: set by user. - * - decoding: unused *) - rc_buffer_size: integer; - rc_buffer_aggressivity: single; - - (*** qscale factor between p and i frames. - * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset) - * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset) - * - encoding: set by user. - * - decoding: unused *) - i_quant_factor: single; - - (*** qscale offset between p and i frames. - * - encoding: set by user. - * - decoding: unused *) - i_quant_offset: single; - - (*** initial complexity for pass1 ratecontrol. - * - encoding: set by user. - * - decoding: unused *) - rc_initial_cplx: single; - - (*** dct algorithm, see FF_DCT_* below. - * - encoding: set by user - * - decoding: unused *) - dct_algo: integer; - - (*** luminance masking (0-> disabled). - * - encoding: set by user - * - decoding: unused *) - lumi_masking: single; - - (*** temporary complexity masking (0-> disabled). - * - encoding: set by user - * - decoding: unused *) - temporal_cplx_masking: single; - - (*** spatial complexity masking (0-> disabled). - * - encoding: set by user - * - decoding: unused *) - spatial_cplx_masking: single; - - (** * p block masking (0-> disabled). - * - encoding: set by user - * - decoding: unused *) - p_masking: single; - - (*** darkness masking (0-> disabled). - * - encoding: set by user - * - decoding: unused *) - dark_masking: single; - - (* for binary compatibility *) - unused: integer; - - (*** idct algorithm, see FF_IDCT_* below. - * - encoding: set by user - * - decoding: set by user *) - idct_algo: integer; - - (*** slice count. - * - encoding: set by lavc - * - decoding: set by user (or 0) *) - slice_count: integer; - - (*** slice offsets in the frame in bytes. - * - encoding: set/allocated by lavc - * - decoding: set/allocated by user (or NULL) *) - slice_offset: Pinteger; - - (*** error concealment flags. - * - encoding: unused - * - decoding: set by user *) - error_concealment: integer; - - (*** dsp_mask could be add used to disable unwanted CPU features - * CPU features (i.e. MMX, SSE. ...) - * - * with FORCE flag you may instead enable given CPU features - * (Dangerous: usable in case of misdetection, improper usage however will - * result into program crash) *) - dsp_mask: cardinal; - - (*** bits per sample/pixel from the demuxer (needed for huffyuv). - * - encoding: set by lavc - * - decoding: set by user *) - bits_per_sample: integer; - - (*** prediction method (needed for huffyuv). - * - encoding: set by user - * - decoding: unused *) - prediction_method: integer; - - (*** sample aspect ratio (0 if unknown). - * numerator and denominator must be relative prime and smaller then 256 for some video standards - * - encoding: set by user. - * - decoding: set by lavc. *) - sample_aspect_ratio: TAVRational; - - (*** the picture in the bitstream. - * - encoding: set by lavc - * - decoding: set by lavc *) - coded_frame: PAVFrame; - - (*** debug. - * - encoding: set by user. - * - decoding: set by user. *) - debug: integer; - - (*** debug. - * - encoding: set by user. - * - decoding: set by user. *) - debug_mv: integer; - - (** error. - * - encoding: set by lavc if flags&CODEC_FLAG_PSNR - * - decoding: unused *) - error: array [0..3] of int64; - - (*** minimum MB quantizer. - * - encoding: unused - * - decoding: unused *) - mb_qmin: integer; - - (*** maximum MB quantizer. - * - encoding: unused - * - decoding: unused *) - mb_qmax: integer; - - (*** motion estimation compare function. - * - encoding: set by user. - * - decoding: unused *) - me_cmp: integer; - - (*** subpixel motion estimation compare function. - * - encoding: set by user. - * - decoding: unused *) - me_sub_cmp: integer; - (*** macroblock compare function (not supported yet). - * - encoding: set by user. - * - decoding: unused *) - mb_cmp: integer; - (*** interlaced dct compare function - * - encoding: set by user. - * - decoding: unused *) - ildct_cmp: integer; - (*** ME diamond size & shape. - * - encoding: set by user. - * - decoding: unused *) - dia_size: integer; - - (*** amount of previous MV predictors (2a+1 x 2a+1 square). - * - encoding: set by user. - * - decoding: unused *) - last_predictor_count: integer; - - (*** pre pass for motion estimation. - * - encoding: set by user. - * - decoding: unused *) - pre_me: integer; - - (*** motion estimation pre pass compare function. - * - encoding: set by user. - * - decoding: unused *) - me_pre_cmp: integer; - - (*** ME pre pass diamond size & shape. - * - encoding: set by user. - * - decoding: unused *) - pre_dia_size: integer; - - (*** subpel ME quality. - * - encoding: set by user. - * - decoding: unused *) - me_subpel_quality: integer; - - (*** callback to negotiate the pixelFormat. - * @param fmt is the list of formats which are supported by the codec, - * its terminated by -1 as 0 is a valid format, the formats are ordered by quality - * the first is allways the native one - * @return the choosen format - * - encoding: unused - * - decoding: set by user, if not set then the native format will always be choosen - *) - get_format: function (s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat; cdecl; - - (*** DTG active format information (additionnal aspect ratio - * information only used in DVB MPEG2 transport streams). 0 if - * not set. - * - encoding: unused. - * - decoding: set by decoder *) - dtg_active_format: integer; - - (*** Maximum motion estimation search range in subpel units. - * if 0 then no limit - * - encoding: set by user. - * - decoding: unused. *) - me_range: integer; - - (*** intra quantizer bias. - * - encoding: set by user. - * - decoding: unused *) - intra_quant_bias: integer; - - (*** inter quantizer bias. - * - encoding: set by user. - * - decoding: unused *) - inter_quant_bias: integer; - - (*** color table ID. - * - encoding: unused. - * - decoding: which clrtable should be used for 8bit RGB images - * table have to be stored somewhere FIXME *) - color_table_id: integer; - - (*** internal_buffer count. - * Don't touch, used by lavc default_get_buffer() *) - internal_buffer_count: integer; - - (*** internal_buffers. - * Don't touch, used by lavc default_get_buffer() *) - internal_buffer: pointer; - - (*** global quality for codecs which cannot change it per frame. - * this should be proportional to MPEG1/2/4 qscale. - * - encoding: set by user. - * - decoding: unused *) - global_quality: integer; - - (*** coder type - * - encoding: set by user. - * - decoding: unused *) - coder_type: integer; - - (*** context model - * - encoding: set by user. - * - decoding: unused *) - context_model: integer; - - (*** slice flags - * - encoding: unused - * - decoding: set by user. *) - slice_flags: integer; - - (*** XVideo Motion Acceleration - * - encoding: forbidden - * - decoding: set by decoder *) - xvmc_acceleration: integer; - - (*** macroblock decision mode - * - encoding: set by user. - * - decoding: unused *) - mb_decision: integer; - - (*** custom intra quantization matrix - * - encoding: set by user, can be NULL - * - decoding: set by lavc *) - intra_matrix: Pword; - - (*** custom inter quantization matrix - * - encoding: set by user, can be NULL - * - decoding: set by lavc *) - inter_matrix: Pword; - - (*** fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). - * this is used to workaround some encoder bugs - * - encoding: unused - * - decoding: set by user, will be converted to upper case by lavc during init *) - stream_codec_tag: array [0..3] of char; //cardinal; - - (*** scene change detection threshold. - * 0 is default, larger means fewer detected scene changes - * - encoding: set by user. - * - decoding: unused *) - scenechange_threshold: integer; - - (*** minimum lagrange multipler - * - encoding: set by user. - * - decoding: unused *) - lmin: integer; - - (*** maximum lagrange multipler - * - encoding: set by user. - * - decoding: unused *) - lmax: integer; - - (*** Palette control structure - * - encoding: ??? (no palette-enabled encoder yet) - * - decoding: set by user. *) - palctrl: PAVPaletteControl; - - (*** noise reduction strength - * - encoding: set by user. - * - decoding: unused *) - noise_reduction: integer; - - (*** called at the beginning of a frame to get cr buffer for it. - * buffer type (size, hints) must be the same. lavc won't check it. - * lavc will pass previous buffer in pic, function should return - * same buffer or new buffer with old frame "painted" into it. - * if pic.data[0] == NULL must behave like get_buffer(). - * - encoding: unused - * - decoding: set by lavc, user can override *) - reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; cdecl; - - (*** number of bits which should be loaded into the rc buffer before decoding starts - * - encoding: set by user. - * - decoding: unused *) - rc_initial_buffer_occupancy: integer; - inter_threshold: integer; - - (*** CODEC_FLAG2_*. - * - encoding: set by user. - * - decoding: set by user. *) - flags2: integer; - - (*** simulates errors in the bitstream to test error concealment. - * - encoding: set by user. - * - decoding: unused. *) - error_rate: integer; - - (*** MP3 antialias algorithm, see FF_AA_* below. - * - encoding: unused - * - decoding: set by user *) - antialias_algo: integer; - - (*** Quantizer noise shaping. - * - encoding: set by user - * - decoding: unused *) - quantizer_noise_shaping: integer; - - (*** Thread count. - * is used to decide how many independant tasks should be passed to execute() - * - encoding: set by user - * - decoding: set by user *) - thread_count: integer; - - (*** the codec may call this to execute several independant things. it will return only after - * finishing all tasks, the user may replace this with some multithreaded implementation, the - * default implementation will execute the parts serially - * @param count the number of things to execute - * - encoding: set by lavc, user can override - * - decoding: set by lavc, user can override *) - execute: function (c: PAVCodecContext; func: pointer; arg: PPointer; ret: PInteger; count: integer): integer; cdecl; - - (*** Thread opaque. - * can be used by execute() to store some per AVCodecContext stuff. - * - encoding: set by execute() - * - decoding: set by execute() *) - thread_opaque: pointer; - - (*** Motion estimation threshold. under which no motion estimation is - * performed, but instead the user specified motion vectors are used - * - encoding: set by user - * - decoding: unused *) - me_threshold: integer; - - (*** Macroblock threshold. under which the user specified macroblock types will be used - * - encoding: set by user - * - decoding: unused *) - mb_threshold: integer; - - (*** precision of the intra dc coefficient - 8. - * - encoding: set by user - * - decoding: unused *) - intra_dc_precision: integer; - - (*** noise vs. sse weight for the nsse comparsion function. - * - encoding: set by user - * - decoding: unused *) - nsse_weight: integer; - - (*** number of macroblock rows at the top which are skipped. - * - encoding: unused - * - decoding: set by user *) - skip_top: integer; - - (*** number of macroblock rows at the bottom which are skipped. - * - encoding: unused - * - decoding: set by user *) - skip_bottom: integer; - - (*** profile - * - encoding: set by user - * - decoding: set by lavc *) - profile: integer; - - (*** level - * - encoding: set by user - * - decoding: set by lavc *) - level: integer; - - (*** low resolution decoding. 1-> 1/2 size, 2->1/4 size - * - encoding: unused - * - decoding: set by user *) - lowres: integer; - - (*** bitsream width / height. may be different from width/height if lowres - * or other things are used - * - encoding: unused - * - decoding: set by user before init if known, codec should override / dynamically change if needed *) - coded_width, coded_height: integer; - - (*** frame skip threshold - * - encoding: set by user - * - decoding: unused *) - frame_skip_threshold: integer; - - (*** frame skip factor - * - encoding: set by user - * - decoding: unused *) - frame_skip_factor: integer; - - (*** frame skip exponent - * - encoding: set by user - * - decoding: unused *) - frame_skip_exp: integer; - - (*** frame skip comparission function - * - encoding: set by user. - * - decoding: unused *) - frame_skip_cmp: integer; - - (*** border processing masking. raises the quantizer for mbs on the borders - * of the picture. - * - encoding: set by user - * - decoding: unused *) - border_masking: single; - - (*** minimum MB lagrange multipler. - * - encoding: set by user. - * - decoding: unused *) - mb_lmin: integer; - - (*** maximum MB lagrange multipler. - * - encoding: set by user. - * - decoding: unused *) - mb_lmax: integer; - - (*** - * - encoding: set by user. - * - decoding: unused *) - me_penalty_compensation: integer; - - (*** - * - encoding: unused - * - decoding: set by user. *) - skip_loop_filter: TAVDiscard; - - (** * - * - encoding: unused - * - decoding: set by user. *) - skip_idct: TAVDiscard; - - (** * - * - encoding: unused - * - decoding: set by user. *) - skip_frame: TAVDiscard; - - (** * - * - encoding: set by user. - * - decoding: unused *) - bidir_refine: integer; - - (** * - * - encoding: set by user. - * - decoding: unused *) - brd_scale: integer; - - (** - * constant rate factor - quality-based VBR - values ~correspond to qps - * - encoding: set by user. - * - decoding: unused *) - crf: integer; - - (** - * constant quantization parameter rate control method - * - encoding: set by user. - * - decoding: unused *) - cqp: integer; - - (** - * minimum gop size - * - encoding: set by user. - * - decoding: unused *) - keyint_min: integer; - - (** - * number of reference frames - * - encoding: set by user. - * - decoding: unused *) - refs: integer; - - (** - * chroma qp offset from luma - * - encoding: set by user. - * - decoding: unused *) - chromaoffset: integer; - - (** - * influences how often b-frames are used - * - encoding: set by user. - * - decoding: unused *) - bframebias: integer; - - (** - * trellis RD quantization - * - encoding: set by user. - * - decoding: unused *) - trellis: integer; - - (** - * reduce fluctuations in qp (before curve compression) - * - encoding: set by user. - * - decoding: unused *) - complexityblur: single; - - (** - * in-loop deblocking filter alphac0 parameter - * alpha is in the range -6...6 - * - encoding: set by user. - * - decoding: unused *) - deblockalpha: integer; - - (** - * in-loop deblocking filter beta parameter - * beta is in the range -6...6 - * - encoding: set by user. - * - decoding: unused *) - deblockbeta: integer; - - (** - * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4 - * - encoding: set by user. - * - decoding: unused *) - partitions: integer; - - (** - * direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal) - * - encoding: set by user. - * - decoding: unused *) - directpred: integer; - - (** - * audio cutoff bandwidth (0 means "automatic") . Currently used only by FAAC - * - encoding: set by user. - * - decoding: unused *) - cutoff: integer; - - (** - * multiplied by qscale for each frame and added to scene_change_score - * - encoding: set by user. - * - decoding: unused *) - scenechange_factor: integer; - - (** * - * note: value depends upon the compare functin used for fullpel ME - * - encoding: set by user. - * - decoding: unused *) - mv0_threshold: integer; - - (** - * adjusts sensitivity of b_frame_strategy 1 - * - encoding: set by user. - * - decoding: unused *) - b_sensitivity: integer; - - (** - * - encoding: set by user. - * - decoding: unused *) - compression_level: integer; - - (** - * sets whether to use LPC mode - used by FLAC encoder - * - encoding: set by user. - * - decoding: unused. *) - use_lpc: integer; - - (** - * LPC coefficient precision - used by FLAC encoder - * - encoding: set by user. - * - decoding: unused. *) - lpc_coeff_precision: integer; - - (** - * - encoding: set by user. - * - decoding: unused. *) - min_prediction_order: integer; - - (** - * - encoding: set by user. - * - decoding: unused. *) - max_prediction_order: integer; - - (** - * search method for selecting prediction order - * - encoding: set by user. - * - decoding: unused. *) - prediction_order_method: integer; - - (** - * - encoding: set by user. - * - decoding: unused. *) - min_partition_order: integer; - - (** - * - encoding: set by user. - * - decoding: unused. *) - max_partition_order: integer; - end; - -(** - * AVCodec. - *) - TAVCodec = record - name: pchar; - _type: TCodecType; - id: TCodecID; - priv_data_size: integer; - init: function (avctx: PAVCodecContext): integer; cdecl; (* typo corretion by the Creative CAT *) - encode: function (avctx: PAVCodecContext; buf: pchar; buf_size: integer; data: pointer): integer; cdecl; - close: function (avctx: PAVCodecContext): integer; cdecl; - decode: function (avctx: PAVCodecContext; outdata: pointer; outdata_size: PInteger; - buf: pchar; buf_size: integer): integer; cdecl; - capabilities: integer; -// todo: check this -> -// void *dummy; // FIXME remove next time we break binary compatibility - next: PAVCodec; - flush: procedure (avctx: PAVCodecContext); cdecl; - supported_framerates: PAVRational; ///array of supported framerates, or NULL if any, array is terminated by {0,0} - pix_fmts: PAVPixelFormat; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1 - end; - -(** - * four components are given, that's all. - * the last component is alpha - *) - PAVPicture = ^TAVPicture; - TAVPicture = record - data: array [0..3] of pchar; - linesize: array [0..3] of integer; ///< number of bytes per line - end; - -(** - * AVPaletteControl - * This structure defines a method for communicating palette changes - * between and demuxer and a decoder. - * this is totally broken, palette changes should be sent as AVPackets - *) - TAVPaletteControl = record - (* demuxer sets this to 1 to indicate the palette has changed; - * decoder resets to 0 *) - palette_changed: integer; - - (* 4-byte ARGB palette entries, stored in native byte order; note that - * the individual palette components should be on a 8-bit scale; if - * the palette data comes from a IBM VGA native format, the component - * data is probably 6 bits in size and needs to be scaled *) - palette: array [0..AVPALETTE_COUNT - 1] of cardinal; - end; - - PAVSubtitleRect = ^TAVSubtitleRect; - TAVSubtitleRect = record - x: word; - y: word; - w: word; - h: word; - nb_colors: word; - linesize: integer; - rgba_palette: PCardinal; - bitmap: pchar; - end; - - PAVSubtitle = ^TAVSubtitle; - TAVSubtitle = record {20} - format: word; (* 0 = graphics *) - start_display_time: cardinal; (* relative to packet pts, in ms *) - end_display_time: cardinal; (* relative to packet pts, in ms *) - num_rects: cardinal; - rects: PAVSubtitleRect; - end; - - -(* resample.c *) - - PReSampleContext = pointer; - PAVResampleContext = pointer; - PImgReSampleContext = pointer; - -function audio_resample_init (output_channels: integer; input_channels: integer; - output_rate: integer; input_rate: integer): PReSampleContext; - cdecl; external av__codec; - -function audio_resample (s: PReSampleContext; output: PWord; input: PWord; nb_samples: integer): integer; - cdecl; external av__codec; - -procedure audio_resample_close (s: PReSampleContext); - cdecl; external av__codec; - - -function av_resample_init (out_rate: integer; in_rate: integer; filter_length: integer; - log2_phase_count: integer; linear: integer; cutoff: double): PAVResampleContext; - cdecl; external av__codec; - -function av_resample (c: PAVResampleContext; dst: PWord; src: PWord; consumed: PInteger; - src_size: integer; dst_size: integer; update_ctx: integer): integer; - cdecl; external av__codec; - -procedure av_resample_compensate (c: PAVResampleContext; sample_delta: integer; - compensation_distance: integer); - cdecl; external av__codec; - -procedure av_resample_close (c: PAVResampleContext); - cdecl; external av__codec; - - -(* YUV420 format is assumed ! *) - - function img_resample_init (output_width: integer; output_height: integer; - input_width: integer; input_height: integer): PImgReSampleContext; - cdecl; external av__codec; - - function img_resample_full_init (owidth: integer; oheight: integer; - iwidth: integer; iheight: integer; - topBand: integer; bottomBand: integer; - leftBand: integer; rightBand: integer; - padtop: integer; padbottom: integer; - padleft: integer; padright: integer): PImgReSampleContext; - cdecl; external av__codec; - - procedure img_resample (s: PImgReSampleContext; output: PAVPicture; const input: PAVPicture); - cdecl; external av__codec; - - procedure img_resample_close (s: PImgReSampleContext); - cdecl; external av__codec; - -(** - * Allocate memory for a picture. Call avpicture_free to free it. - * - * @param picture the picture to be filled in. - * @param pix_fmt the format of the picture. - * @param width the width of the picture. - * @param height the height of the picture. - * @return 0 if successful, -1 if not. - *) - function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat; - width: integer; height: integer): integer; - cdecl; external av__codec; - - -(* Free a picture previously allocated by avpicture_alloc. *) - procedure avpicture_free (picture: PAVPicture); - cdecl; external av__codec; - - function avpicture_fill (picture: PAVPicture; ptr: pointer; - pix_fmt: TAVPixelFormat; width: integer; height: integer): integer; - cdecl; external av__codec; - - function avpicture_layout (const src: PAVPicture; pix_fmt: TAVPixelFormat; - width: integer; height: integer; - dest: pchar; dest_size: integer): integer; - cdecl; external av__codec; - - function avpicture_get_size (pix_fmt: TAVPixelFormat; width: integer; height: integer): integer; - cdecl; external av__codec; - - procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; h_shift: Pinteger; v_shift: pinteger); - cdecl; external av__codec; - - function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): pchar; - cdecl; external av__codec; - - procedure avcodec_set_dimensions(s: PAVCodecContext; width: integer; height: integer); - cdecl; external av__codec; - - function avcodec_get_pix_fmt(const name: pchar): TAVPixelFormat; - cdecl; external av__codec; - - function avcodec_pix_fmt_to_codec_tag(p: TAVPixelFormat): cardinal; - cdecl; external av__codec; - - function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat; - has_alpha: integer): integer; - cdecl; external av__codec; - - function avcodec_find_best_pix_fmt (pix_fmt_mask: integer; src_pix_fmt: TAVPixelFormat; - has_alpha: integer; loss_ptr: pinteger): integer; - cdecl; external av__codec; - - function img_get_alpha_info (const src: PAVPicture; - pix_fmt: TAVPixelFormat; - width: integer; height: integer): integer; - cdecl; external av__codec; - - -(* convert among pixel formats *) - function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat; - const src: PAVPicture; pix_fmt: TAVPixelFormat; - width: integer; height: integer): integer; - cdecl; external av__codec; - -(* deinterlace a picture *) - function avpicture_deinterlace (dst: PAVPicture; const src: PAVPicture; - pix_fmt: TAVPixelFormat; width: integer; height: integer): integer; - cdecl; external av__codec; - -(* returns LIBAVCODEC_VERSION_INT constant *) - function avcodec_version (): cardinal; - cdecl; external av__codec; - -(* returns LIBAVCODEC_BUILD constant *) - function avcodec_build (): cardinal; - cdecl; external av__codec; - - procedure avcodec_init (); - cdecl; external av__codec; - - procedure register_avcodec (format: PAVCodec); - cdecl; external av__codec; - - function avcodec_find_encoder (id: TCodecID): PAVCodec; - cdecl; external av__codec; - function avcodec_find_encoder_by_name (name: pchar): PAVCodec; - cdecl; external av__codec; - function avcodec_find_decoder(id: TCodecID): PAVCodec; - cdecl; external av__codec; - function avcodec_find_decoder_by_name (name: pchar): PAVCodec; - cdecl; external av__codec; - procedure avcodec_string(buf: pchar; buf_size: integer; enc: PAVCodecContext; encode: integer); - cdecl; external av__codec; - - procedure avcodec_get_context_defaults (s: PAVCodecContext); - cdecl; external av__codec; - function avcodec_alloc_context : PAVCodecContext; - cdecl; external av__codec; -(* favourite of The Creative CAT - function avcodec_alloc_context (): PAVCodecContext; - cdecl; external av__codec; *) - procedure avcodec_get_frame_defaults (pic: PAVFrame); - cdecl; external av__codec; - function avcodec_alloc_frame : PAVFrame; - cdecl; external av__codec; -(* favourite of The Creative CAT - function avcodec_alloc_frame (): PAVFrame; - cdecl; external av__codec; *) - - function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): integer; - cdecl; external av__codec; - procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame); - cdecl; external av__codec; - function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): integer; - cdecl; external av__codec; - procedure avcodec_align_dimensions(s: PAVCodecContext; width: Pinteger; height: PInteger); - cdecl; external av__codec; - function avcodec_check_dimensions (av_log_ctx: pointer; w: cardinal; h: cardinal): integer; - cdecl; external av__codec; - function avcodec_default_get_format(s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat; - cdecl; external av__codec; - - function avcodec_thread_init (s: PAVCodecContext; thread_count: integer): integer; - cdecl; external av__codec; - procedure avcodec_thread_free (s: PAVCodecContext); - cdecl; external av__codec; - function avcodec_thread_execute (s: PAVCodecContext; func: pointer; arg: PPointer; ret: Pinteger; count: integer): integer; - cdecl; external av__codec; - function avcodec_default_execute (s: PAVCodecContext; func: pointer; arg: PPointer; ret: Pinteger; count: integer): integer; - cdecl; external av__codec; - - -//FIXME func typedef - -(** - * opens / inits the AVCodecContext. - * not thread save! - *) - function avcodec_open (avctx: PAVCodecContext; codec: PAVCodec): integer; - cdecl; external av__codec; - - -(** - * Decode an audio frame. - * - * @param avctx the codec context. - * @param samples output buffer, 16 byte aligned - * @param frame_size_ptr the output buffer size in bytes, zero if no frame could be compressed - * @param buf input buffer, 16 byte aligned - * @param buf_size the input buffer size - * @return 0 if successful, -1 if not. - *) - -(** This comment was added by the Creative CAT. frame_size_ptr was changed to - variable refference. - - * @deprecated Use avcodec_decode_audio2() instead. - *) - - function avcodec_decode_audio (avctx: PAVCodecContext; samples: Pword; - var frame_size_ptr: integer; - buf: pchar; buf_size: integer): integer; - cdecl; external av__codec; -(* decode a frame. - * @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes - * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end - * @param buf_size the size of the buffer in bytes - * @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero - * @return -1 if error, otherwise return the number of - * bytes used. *) - - function avcodec_decode_audio2(avctx : PAVCodecContext; samples : PWord; - var frame_size_ptr : integer; - buf: pchar; buf_size: integer): integer; - cdecl; external av__codec; -(* Added by The Creative CAT -/** - * Decodes a video frame from \p buf into \p picture. - * The avcodec_decode_video() function decodes a video frame from the input - * buffer \p buf of size \p buf_size. To decode it, it makes use of the - * video codec which was coupled with \p avctx using avcodec_open(). The - * resulting decoded frame is stored in \p picture. - * - * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than - * the actual read bytes because some optimized bitstream readers read 32 or 64 - * bits at once and could read over the end. - * - * @warning The end of the input buffer \p buf should be set to 0 to ensure that - * no overreading happens for damaged MPEG streams. - * - * @note You might have to align the input buffer \p buf and output buffer \p - * samples. The alignment requirements depend on the CPU: on some CPUs it isn't - * necessary at all, on others it won't work at all if not aligned and on others - * it will work but it will have an impact on performance. In practice, the - * bitstream should have 4 byte alignment at minimum and all sample data should - * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If - * the linesize is not a multiple of 16 then there's no sense in aligning the - * start of the buffer to 16. - * - * @param avctx the codec context - * @param[out] picture The AVFrame in which the decoded video frame will be stored. - * @param[in] buf the input buffer - * @param[in] buf_size the size of the input buffer in bytes - * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. - * @return On error a negative value is returned, otherwise the number of bytes - * used or zero if no frame could be decompressed. - */ -*) - - function avcodec_decode_video (avctx: PAVCodecContext; picture: PAVFrame; - var got_picture_ptr: integer; (* favour of The Creative CAT *) - buf: PByte; buf_size: integer): integer; - cdecl; external av__codec; - - function avcodec_decode_subtitle (avctx: PAVCodecContext; sub: PAVSubtitle; - got_sub_ptr: pinteger; - const buf: pchar; buf_size: integer): integer; - cdecl; external av__codec; - function avcodec_parse_frame (avctx: PAVCodecContext; pdata: PPointer; - data_size_ptr: pinteger; - buf: pchar; buf_size: integer): integer; - cdecl; external av__codec; - - function avcodec_encode_audio (avctx: PAVCodecContext; buf: PByte; - buf_size: integer; const samples: PWord): integer; - cdecl; external av__codec; - - (* avcodec_encode_video: -1 if error *) - (* type of the second argument is changed by The Creative CAT *) - function avcodec_encode_video (avctx: PAVCodecContext; buf: PByte; - buf_size: integer; pict: PAVFrame): integer; - cdecl; external av__codec; - function avcodec_encode_subtitle (avctx: PAVCodecContext; buf: pchar; - buf_size: integer; const sub: PAVSubtitle): integer; - cdecl; external av__codec; - function avcodec_close (avctx: PAVCodecContext): integer; - cdecl; external av__codec; - - procedure avcodec_register_all (); - cdecl; external av__codec; - - procedure avcodec_flush_buffers (avctx: PAVCodecContext); - cdecl; external av__codec; - procedure avcodec_default_free_buffers (s: PAVCodecContext); - cdecl; external av__codec; - -(* misc usefull functions *) - -(** - * returns a single letter to describe the picture type - *) - function av_get_pict_type_char (pict_type: integer): char; - cdecl; external av__codec; - - -(** - * returns codec bits per sample - *) -function av_get_bits_per_sample (codec_id: TCodecID): integer; - cdecl; external av__codec; - -const - AV_PARSER_PTS_NB = 4; - PARSER_FLAG_COMPLETE_FRAMES = $0001; - -type - PAVCodecParserContext = ^TAVCodecParserContext; - PAVCodecParser = ^TAVCodecParser; - - TAVCodecParserContext = record - priv_data: pointer; - parser: PAVCodecParser; - frame_offset: int64; (* offset of the current frame *) - cur_offset: int64; (* current offset (incremented by each av_parser_parse()) *) - last_frame_offset: int64; (* offset of the last frame *) - (* video info *) - pict_type: integer; (* XXX: put it back in AVCodecContext *) - repeat_pict: integer; (* XXX: put it back in AVCodecContext *) - pts: int64; (* pts of the current frame *) - dts: int64; (* dts of the current frame *) - - (* private data *) - last_pts: int64; - last_dts: int64; - fetch_timestamp: integer; - - cur_frame_start_index: integer; - cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of int64; - cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of int64; - cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of int64; - - flags: integer; - end; - - TAVCodecParser = record - codec_ids: array [0..4] of integer; (* several codec IDs are permitted *) - priv_data_size: integer; - parser_init: function (s: PAVCodecParserContext): integer; cdecl; - parser_parse: function (s: PAVCodecParserContext; avctx: PAVCodecContext; - poutbuf: PPointer; poutbuf_size: PInteger; - const buf: pchar; buf_size: integer): integer; cdecl; - parser_close: procedure (s: PAVCodecParserContext); cdecl; - split: function (avctx: PAVCodecContext; const buf: pchar; - buf_size: integer): integer; cdecl; - next: PAVCodecParser; - end; - - procedure av_register_codec_parser (parser: PAVCodecParser); - cdecl; external av__codec; - - function av_parser_init (codec_id: integer): PAVCodecParserContext; - cdecl; external av__codec; - - function av_parser_parse (s: PAVCodecParserContext; - avctx: PAVCodecContext; - poutbuf: PPointer; poutbuf_size: pinteger; - const buf: pchar; buf_size: integer; - pts: int64; dts: int64): integer; - cdecl; external av__codec; - function av_parser_change (s: PAVCodecParserContext; - avctx: PAVCodecContext; - poutbuf: PPointer; poutbuf_size: PInteger; - const buf: pchar; buf_size: integer; keyframe: integer): integer; - cdecl; external av__codec; - procedure av_parser_close (s: PAVCodecParserContext); - cdecl; external av__codec; - -type - PAVBitStreamFilterContext = ^TAVBitStreamFilterContext; - PAVBitStreamFilter = ^TAVBitStreamFilter; - - TAVBitStreamFilterContext = record - priv_data: pointer; - filter: PAVBitStreamFilter; - parser: PAVCodecParserContext; - next: PAVBitStreamFilterContext; - end; - - TAVBitStreamFilter = record - name: pchar; - priv_data_size: integer; - filter: function (bsfc: PAVBitStreamFilterContext; - avctx: PAVCodecContext; args: pchar; - poutbuf: PPointer; poutbuf_size: PInteger; - buf: PByte; buf_size: integer; keyframe: integer): integer; cdecl; - next: PAVBitStreamFilter; - end; - -procedure av_register_bitstream_filter (bsf: PAVBitStreamFilter); - cdecl; external av__codec; - -function av_bitstream_filter_init (name: pchar): PAVBitStreamFilterContext; - cdecl; external av__codec; - -function av_bitstream_filter_filter (bsfc: PAVBitStreamFilterContext; - avctx: PAVCodecContext; args: pchar; - poutbuf: PPointer; poutbuf_size: PInteger; - buf: PByte; buf_size: integer; keyframe: integer): integer; - cdecl; external av__codec; -procedure av_bitstream_filter_close (bsf: PAVBitStreamFilterContext); - cdecl; external av__codec; - - -(* memory *) - procedure av_fast_realloc (ptr: pointer; size: PCardinal; min_size: Cardinal); - cdecl; external av__codec; -(* for static data only *) -(* call av_free_static to release all staticaly allocated tables *) - procedure av_free_static (); - cdecl; external av__codec; - - procedure av_mallocz_static(size: cardinal); - cdecl; external av__codec; - - procedure av_realloc_static(ptr: pointer; size: Cardinal); - cdecl; external av__codec; - - procedure img_copy (dst: PAVPicture; const src: PAVPicture; - pix_fmt: TAVPixelFormat; width: integer; height: integer); - cdecl; external av__codec; - - function img_crop (dst: PAVPicture; const src: PAVPicture; - pix_fmt: TAVPixelFormat; top_band, left_band: integer): integer; - cdecl; external av__codec; - - function img_pad (dst: PAVPicture; const src: PAVPicture; height, width: integer; - pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: integer; - color: PInteger): integer; - cdecl; external av__codec; - -implementation - -end. +(* + * copyright (c) 2001 Fabrice Bellard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + *) + +(* This is a part of Pascal porting of ffmpeg. + * Originally by Victor Zinetz for Delphi and Free Pascal on Windows. + * For Mac OS X, some modifications were made by The Creative CAT, denoted as CAT + * in the source codes *) + +// Min. version: 51.16.0 +// Max. version: 51.49.0, Revision: 11352 + +unit avcodec; + +{$IFDEF FPC} + {$MODE DELPHI } + {$PACKENUM 4} (* use 4-byte enums *) + {$PACKRECORDS C} (* C/C++-compatible record packing *) +{$ELSE} + {$MINENUMSIZE 4} (* use 4-byte enums *) +{$ENDIF} + +interface + +uses + avutil, + rational, + opt, + UConfig; + +const + (* Max. supported version by this header *) + LIBAVCODEC_MAX_VERSION_MAJOR = 51; + LIBAVCODEC_MAX_VERSION_MINOR = 49; + LIBAVCODEC_MAX_VERSION_RELEASE = 0; + LIBAVCODEC_MAX_VERSION = (LIBAVCODEC_MAX_VERSION_MAJOR * VERSION_MAJOR) + + (LIBAVCODEC_MAX_VERSION_MINOR * VERSION_MINOR) + + (LIBAVCODEC_MAX_VERSION_RELEASE * VERSION_RELEASE); + +(* Check if linked version is supported *) +{$IF (LIBAVCODEC_VERSION > LIBAVCODEC_MAX_VERSION)} + {$MESSAGE Warn 'Linked version of libavcodec may be unsupported!'} +{$IFEND} + +const + AV_NOPTS_VALUE: int64 = $8000000000000000; + AV_TIME_BASE = 1000000; + AV_TIME_BASE_Q : TAVRational = (num:1; den:AV_TIME_BASE); (* added by CAT *) + +(** + * Identifies the syntax and semantics of the bitstream. + * The principle is roughly: + * Two decoders with the same ID can decode the same streams. + * Two encoders with the same ID can encode compatible streams. + * There may be slight deviations from the principle due to implementation + * details. + * + * If you add a codec ID to this list, add it so that + * 1. no value of a existing codec ID changes (that would break ABI), + * 2. it is as close as possible to similar codecs. + *) +type + TCodecID = ( + CODEC_ID_NONE, + CODEC_ID_MPEG1VIDEO, + CODEC_ID_MPEG2VIDEO, //* prefered ID for MPEG Video 1/2 decoding */ + CODEC_ID_MPEG2VIDEO_XVMC, + CODEC_ID_H261, + CODEC_ID_H263, + CODEC_ID_RV10, + CODEC_ID_RV20, + CODEC_ID_MJPEG, + CODEC_ID_MJPEGB, + CODEC_ID_LJPEG, + CODEC_ID_SP5X, + CODEC_ID_JPEGLS, + CODEC_ID_MPEG4, + CODEC_ID_RAWVIDEO, + CODEC_ID_MSMPEG4V1, + CODEC_ID_MSMPEG4V2, + CODEC_ID_MSMPEG4V3, + CODEC_ID_WMV1, + CODEC_ID_WMV2, + CODEC_ID_H263P, + CODEC_ID_H263I, + CODEC_ID_FLV1, + CODEC_ID_SVQ1, + CODEC_ID_SVQ3, + CODEC_ID_DVVIDEO, + CODEC_ID_HUFFYUV, + CODEC_ID_CYUV, + CODEC_ID_H264, + CODEC_ID_INDEO3, + CODEC_ID_VP3, + CODEC_ID_THEORA, + CODEC_ID_ASV1, + CODEC_ID_ASV2, + CODEC_ID_FFV1, + CODEC_ID_4XM, + CODEC_ID_VCR1, + CODEC_ID_CLJR, + CODEC_ID_MDEC, + CODEC_ID_ROQ, + CODEC_ID_INTERPLAY_VIDEO, + CODEC_ID_XAN_WC3, + CODEC_ID_XAN_WC4, + CODEC_ID_RPZA, + CODEC_ID_CINEPAK, + CODEC_ID_WS_VQA, + CODEC_ID_MSRLE, + CODEC_ID_MSVIDEO1, + CODEC_ID_IDCIN, + CODEC_ID_8BPS, + CODEC_ID_SMC, + CODEC_ID_FLIC, + CODEC_ID_TRUEMOTION1, + CODEC_ID_VMDVIDEO, + CODEC_ID_MSZH, + CODEC_ID_ZLIB, + CODEC_ID_QTRLE, + CODEC_ID_SNOW, + CODEC_ID_TSCC, + CODEC_ID_ULTI, + CODEC_ID_QDRAW, + CODEC_ID_VIXL, + CODEC_ID_QPEG, + CODEC_ID_XVID, + CODEC_ID_PNG, + CODEC_ID_PPM, + CODEC_ID_PBM, + CODEC_ID_PGM, + CODEC_ID_PGMYUV, + CODEC_ID_PAM, + CODEC_ID_FFVHUFF, + CODEC_ID_RV30, + CODEC_ID_RV40, + CODEC_ID_VC1, + CODEC_ID_WMV3, + CODEC_ID_LOCO, + CODEC_ID_WNV1, + CODEC_ID_AASC, + CODEC_ID_INDEO2, + CODEC_ID_FRAPS, + CODEC_ID_TRUEMOTION2, + CODEC_ID_BMP, + CODEC_ID_CSCD, + CODEC_ID_MMVIDEO, + CODEC_ID_ZMBV, + CODEC_ID_AVS, + CODEC_ID_SMACKVIDEO, + CODEC_ID_NUV, + CODEC_ID_KMVC, + CODEC_ID_FLASHSV, + CODEC_ID_CAVS, + CODEC_ID_JPEG2000, + CODEC_ID_VMNC, + CODEC_ID_VP5, + CODEC_ID_VP6, + CODEC_ID_VP6F, + CODEC_ID_TARGA, + CODEC_ID_DSICINVIDEO, + CODEC_ID_TIERTEXSEQVIDEO, + CODEC_ID_TIFF, + CODEC_ID_GIF, + CODEC_ID_FFH264, + CODEC_ID_DXA, + CODEC_ID_DNXHD, + CODEC_ID_THP, + CODEC_ID_SGI, + CODEC_ID_C93, + CODEC_ID_BETHSOFTVID, + CODEC_ID_PTX, + CODEC_ID_TXD, + CODEC_ID_VP6A, + CODEC_ID_AMV, + CODEC_ID_VB, + CODEC_ID_PCX, + CODEC_ID_SUNRAST, + + //* various PCM "codecs" */ + CODEC_ID_PCM_S16LE= $10000, + CODEC_ID_PCM_S16BE, + CODEC_ID_PCM_U16LE, + CODEC_ID_PCM_U16BE, + CODEC_ID_PCM_S8, + CODEC_ID_PCM_U8, + CODEC_ID_PCM_MULAW, + CODEC_ID_PCM_ALAW, + CODEC_ID_PCM_S32LE, + CODEC_ID_PCM_S32BE, + CODEC_ID_PCM_U32LE, + CODEC_ID_PCM_U32BE, + CODEC_ID_PCM_S24LE, + CODEC_ID_PCM_S24BE, + CODEC_ID_PCM_U24LE, + CODEC_ID_PCM_U24BE, + CODEC_ID_PCM_S24DAUD, + CODEC_ID_PCM_ZORK, + CODEC_ID_PCM_S16LE_PLANAR, + + //* various ADPCM codecs */ + CODEC_ID_ADPCM_IMA_QT= $11000, + CODEC_ID_ADPCM_IMA_WAV, + CODEC_ID_ADPCM_IMA_DK3, + CODEC_ID_ADPCM_IMA_DK4, + CODEC_ID_ADPCM_IMA_WS, + CODEC_ID_ADPCM_IMA_SMJPEG, + CODEC_ID_ADPCM_MS, + CODEC_ID_ADPCM_4XM, + CODEC_ID_ADPCM_XA, + CODEC_ID_ADPCM_ADX, + CODEC_ID_ADPCM_EA, + CODEC_ID_ADPCM_G726, + CODEC_ID_ADPCM_CT, + CODEC_ID_ADPCM_SWF, + CODEC_ID_ADPCM_YAMAHA, + CODEC_ID_ADPCM_SBPRO_4, + CODEC_ID_ADPCM_SBPRO_3, + CODEC_ID_ADPCM_SBPRO_2, + CODEC_ID_ADPCM_THP, + CODEC_ID_ADPCM_IMA_AMV, + CODEC_ID_ADPCM_EA_R1, + CODEC_ID_ADPCM_EA_R3, + CODEC_ID_ADPCM_EA_R2, + CODEC_ID_ADPCM_IMA_EA_SEAD, + CODEC_ID_ADPCM_IMA_EA_EACS, + CODEC_ID_ADPCM_EA_XAS, + + //* AMR */ + CODEC_ID_AMR_NB= $12000, + CODEC_ID_AMR_WB, + + //* RealAudio codecs*/ + CODEC_ID_RA_144= $13000, + CODEC_ID_RA_288, + + //* various DPCM codecs */ + CODEC_ID_ROQ_DPCM= $14000, + CODEC_ID_INTERPLAY_DPCM, + CODEC_ID_XAN_DPCM, + CODEC_ID_SOL_DPCM, + + CODEC_ID_MP2= $15000, + CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3 + CODEC_ID_AAC, + {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 + _CODEC_ID_MPEG4AAC, // will be redefined to CODEC_ID_AAC below + {$IFEND} + CODEC_ID_AC3, + CODEC_ID_DTS, + CODEC_ID_VORBIS, + CODEC_ID_DVAUDIO, + CODEC_ID_WMAV1, + CODEC_ID_WMAV2, + CODEC_ID_MACE3, + CODEC_ID_MACE6, + CODEC_ID_VMDAUDIO, + CODEC_ID_SONIC, + CODEC_ID_SONIC_LS, + CODEC_ID_FLAC, + CODEC_ID_MP3ADU, + CODEC_ID_MP3ON4, + CODEC_ID_SHORTEN, + CODEC_ID_ALAC, + CODEC_ID_WESTWOOD_SND1, + CODEC_ID_GSM, ///< as in Berlin toast format + CODEC_ID_QDM2, + CODEC_ID_COOK, + CODEC_ID_TRUESPEECH, + CODEC_ID_TTA, + CODEC_ID_SMACKAUDIO, + CODEC_ID_QCELP, + CODEC_ID_WAVPACK, + CODEC_ID_DSICINAUDIO, + CODEC_ID_IMC, + CODEC_ID_MUSEPACK7, + CODEC_ID_MLP, + CODEC_ID_GSM_MS, { as found in WAV } + CODEC_ID_ATRAC3, + CODEC_ID_VOXWARE, + CODEC_ID_APE, + CODEC_ID_NELLYMOSER, + CODEC_ID_MUSEPACK8, + + //* subtitle codecs */ + CODEC_ID_DVD_SUBTITLE= $17000, + CODEC_ID_DVB_SUBTITLE, + CODEC_ID_TEXT, ///< raw UTF-8 text + CODEC_ID_XSUB, + CODEC_ID_SSA, + + CODEC_ID_MPEG2TS= $20000, {*< _FAKE_ codec to indicate a raw MPEG-2 TS + * stream (only used by libavformat) *} + __CODEC_ID_4BYTE = $FFFFF // ensure 4-byte enum + ); + +{* CODEC_ID_MP3LAME is obsolete *} +const + {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 + CODEC_ID_MP3LAME = CODEC_ID_MP3; + CODEC_ID_MPEG4AAC = CODEC_ID_AAC; + {$IFEND} + +type + TCodecType = ( + CODEC_TYPE_UNKNOWN = -1, + CODEC_TYPE_VIDEO, + CODEC_TYPE_AUDIO, + CODEC_TYPE_DATA, + CODEC_TYPE_SUBTITLE, + CODEC_TYPE_NB + ); + +{** + * currently unused, may be used if 24/32 bits samples ever supported */ + * all in native endian + *} +type + TSampleFormat = ( + SAMPLE_FMT_NONE = -1, + SAMPLE_FMT_U8, ///< unsigned 8 bits + SAMPLE_FMT_S16, ///< signed 16 bits + SAMPLE_FMT_S24, ///< signed 24 bits + SAMPLE_FMT_S32, ///< signed 32 bits + SAMPLE_FMT_FLT ///< float + ); + +const + {* in bytes *} + AVCODEC_MAX_AUDIO_FRAME_SIZE = 192000; // 1 second of 48khz 32bit audio + +{** + * Required number of additionally allocated bytes at the end of the input bitstream for decoding. + * This is mainly needed because some optimized bitstream readers read + * 32 or 64 bit at once and could read over the end.
+ * Note: If the first 23 bits of the additional bytes are not 0, then damaged + * MPEG bitstreams could cause overread and segfault. + *} + FF_INPUT_BUFFER_PADDING_SIZE = 8; + +{** + * minimum encoding buffer size. + * Used to avoid some checks during header writing. + *} + FF_MIN_BUFFER_SIZE = 16384; + +type +{* + * motion estimation type. + *} + TMotion_Est_ID = ( + ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed + ME_FULL, + ME_LOG, + ME_PHODS, + ME_EPZS, ///< enhanced predictive zonal search + ME_X1, ///< reserved for experiments + ME_HEX, ///< hexagon based search + ME_UMH, ///< uneven multi-hexagon search + ME_ITER ///< iterative search + ); + + TAVDiscard = ( + {* We leave some space between them for extensions (drop some + * keyframes for intra-only or drop just some bidir frames). *} + AVDISCARD_NONE =-16, ///< discard nothing + AVDISCARD_DEFAULT= 0, ///< discard useless packets like 0 size packets in avi + AVDISCARD_NONREF = 8, ///< discard all non reference + AVDISCARD_BIDIR = 16, ///< discard all bidirectional frames + AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes + AVDISCARD_ALL = 48 ///< discard all + ); + + PRcOverride = ^TRcOverride; + TRcOverride = record {16} + start_frame: integer; + end_frame: integer; + qscale: integer; // if this is 0 then quality_factor will be used instead + quality_factor: single; + end; + +const + FF_MAX_B_FRAMES = 16; + +{* encoding support + These flags can be passed in AVCodecContext.flags before initialization. + Note: Not everything is supported yet. +*} + + CODEC_FLAG_QSCALE = $0002; ///< Use fixed qscale. + CODEC_FLAG_4MV = $0004; ///< 4 MV per MB allowed / advanced prediction for H263. + CODEC_FLAG_QPEL = $0010; ///< use qpel MC. + CODEC_FLAG_GMC = $0020; ///< use GMC. + CODEC_FLAG_MV0 = $0040; ///< always try a MB with MV=<0,0>. + CODEC_FLAG_PART = $0080; ///< Use data partitioning. + {** + * The parent program guarantees that the input for B-frames containing + * streams is not written to for at least s->max_b_frames+1 frames, if + * this is not set the input will be copied. + *} + CODEC_FLAG_INPUT_PRESERVED = $0100; + CODEC_FLAG_PASS1 = $0200; ///< use internal 2pass ratecontrol in first pass mode + CODEC_FLAG_PASS2 = $0400; ///< use internal 2pass ratecontrol in second pass mode + CODEC_FLAG_EXTERN_HUFF = $1000; ///< use external huffman table (for mjpeg) + CODEC_FLAG_GRAY = $2000; ///< only decode/encode grayscale + CODEC_FLAG_EMU_EDGE = $4000; ///< don't draw edges + CODEC_FLAG_PSNR = $8000; ///< error[?] variables will be set during encoding + CODEC_FLAG_TRUNCATED = $00010000; //** input bitstream might be truncated at a random location instead + // of only at frame boundaries */ + CODEC_FLAG_NORMALIZE_AQP = $00020000; ///< normalize adaptive quantization + CODEC_FLAG_INTERLACED_DCT = $00040000; ///< use interlaced dct + CODEC_FLAG_LOW_DELAY = $00080000; ///< force low delay + CODEC_FLAG_ALT_SCAN = $00100000; ///< use alternate scan + CODEC_FLAG_TRELLIS_QUANT = $00200000; ///< use trellis quantization + CODEC_FLAG_GLOBAL_HEADER = $00400000; ///< place global headers in extradata instead of every keyframe + CODEC_FLAG_BITEXACT = $00800000; ///< use only bitexact stuff (except (i)dct) + {* Fx : Flag for h263+ extra options *} + {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 + CODEC_FLAG_H263P_AIC = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction (remove this) + {$IFEND} + CODEC_FLAG_AC_PRED = $01000000; ///< H263 Advanced intra coding / MPEG4 AC prediction + CODEC_FLAG_H263P_UMV = $02000000; ///< Unlimited motion vector + CODEC_FLAG_CBP_RD = $04000000; ///< use rate distortion optimization for cbp + CODEC_FLAG_QP_RD = $08000000; ///< use rate distortion optimization for qp selectioon + CODEC_FLAG_H263P_AIV = $00000008; ///< H263 Alternative inter vlc + CODEC_FLAG_OBMC = $00000001; ///< OBMC + CODEC_FLAG_LOOP_FILTER = $00000800; ///< loop filter + CODEC_FLAG_H263P_SLICE_STRUCT = $10000000; + CODEC_FLAG_INTERLACED_ME = $20000000; ///< interlaced motion estimation + CODEC_FLAG_SVCD_SCAN_OFFSET = $40000000; ///< will reserve space for SVCD scan offset user data + CODEC_FLAG_CLOSED_GOP = $80000000; + CODEC_FLAG2_FAST = $00000001; ///< allow non spec compliant speedup tricks + CODEC_FLAG2_STRICT_GOP = $00000002; ///< strictly enforce GOP size + CODEC_FLAG2_NO_OUTPUT = $00000004; ///< skip bitstream encoding + CODEC_FLAG2_LOCAL_HEADER = $00000008; ///< place global headers at every keyframe instead of in extradata + CODEC_FLAG2_BPYRAMID = $00000010; ///< H.264 allow b-frames to be used as references + CODEC_FLAG2_WPRED = $00000020; ///< H.264 weighted biprediction for b-frames + CODEC_FLAG2_MIXED_REFS = $00000040; ///< H.264 multiple references per partition + CODEC_FLAG2_8X8DCT = $00000080; ///< H.264 high profile 8x8 transform + CODEC_FLAG2_FASTPSKIP = $00000100; ///< H.264 fast pskip + CODEC_FLAG2_AUD = $00000200; ///< H.264 access unit delimiters + CODEC_FLAG2_BRDO = $00000400; ///< b-frame rate-distortion optimization + CODEC_FLAG2_INTRA_VLC = $00000800; ///< use MPEG-2 intra VLC table + CODEC_FLAG2_MEMC_ONLY = $00001000; ///< only do ME/MC (I frames -> ref, P frame -> ME+MC) + CODEC_FLAG2_DROP_FRAME_TIMECODE = $00002000; ///< timecode is in drop frame format. + CODEC_FLAG2_SKIP_RD = $00004000; ///< RD optimal MB level residual skipping + CODEC_FLAG2_CHUNKS = $00008000; ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. + CODEC_FLAG2_NON_LINEAR_QUANT = $00010000; ///< Use MPEG-2 nonlinear quantizer. + +(* Unsupported options : + * Syntax Arithmetic coding (SAC) + * Reference Picture Selection + * Independant Segment Decoding *) +(* /Fx *) +(* codec capabilities *) + +const + CODEC_CAP_DRAW_HORIZ_BAND = $0001; ///< decoder can use draw_horiz_band callback + (** + * Codec uses get_buffer() for allocating buffers. + * direct rendering method 1 + *) + CODEC_CAP_DR1 = $0002; + (* if 'parse_only' field is true, then avcodec_parse_frame() can be used *) + CODEC_CAP_PARSE_ONLY = $0004; + CODEC_CAP_TRUNCATED = $0008; + (* codec can export data for HW decoding (XvMC) *) + CODEC_CAP_HWACCEL = $0010; + (** + * codec has a non zero delay and needs to be feeded with NULL at the end to get the delayed data. + * if this is not set, the codec is guranteed to never be feeded with NULL data + *) + CODEC_CAP_DELAY = $0020; + (** + * Codec can be fed a final frame with a smaller size. + * This can be used to prevent truncation of the last audio samples. + *) + CODEC_CAP_SMALL_LAST_FRAME = $0040; + + //the following defines may change, don't expect compatibility if you use them + MB_TYPE_INTRA4x4 = $001; + MB_TYPE_INTRA16x16 = $002; //FIXME h264 specific + MB_TYPE_INTRA_PCM = $004; //FIXME h264 specific + MB_TYPE_16x16 = $008; + MB_TYPE_16x8 = $010; + MB_TYPE_8x16 = $020; + MB_TYPE_8x8 = $040; + MB_TYPE_INTERLACED = $080; + MB_TYPE_DIRECT2 = $100; //FIXME + MB_TYPE_ACPRED = $200; + MB_TYPE_GMC = $400; + MB_TYPE_SKIP = $800; + MB_TYPE_P0L0 = $1000; + MB_TYPE_P1L0 = $2000; + MB_TYPE_P0L1 = $4000; + MB_TYPE_P1L1 = $8000; + MB_TYPE_L0 = (MB_TYPE_P0L0 or MB_TYPE_P1L0); + MB_TYPE_L1 = (MB_TYPE_P0L1 or MB_TYPE_P1L1); + MB_TYPE_L0L1 = (MB_TYPE_L0 or MB_TYPE_L1); + MB_TYPE_QUANT = $0010000; + MB_TYPE_CBP = $0020000; + //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) + +type +(** + * Pan Scan area. + * This specifies the area which should be displayed. + * Note there may be multiple such areas for one frame. + *) + PAVPanScan = ^TAVPanScan; + TAVPanScan = record {24} + (*** id. + * - encoding: set by user. + * - decoding: set by libavcodec. *) + id: integer; + + (*** width and height in 1/16 pel + * - encoding: set by user. + * - decoding: set by libavcodec. *) + width: integer; + height: integer; + + (*** position of the top left corner in 1/16 pel for up to 3 fields/frames. + * - encoding: set by user. + * - decoding: set by libavcodec. *) + position: array [0..2] of array [0..1] of smallint; + end; + +const + FF_QSCALE_TYPE_MPEG1 = 0; + FF_QSCALE_TYPE_MPEG2 = 1; + FF_QSCALE_TYPE_H264 = 2; + + FF_BUFFER_TYPE_INTERNAL = 1; + FF_BUFFER_TYPE_USER = 2; ///< Direct rendering buffers (image is (de)allocated by user) + FF_BUFFER_TYPE_SHARED = 4; ///< buffer from somewhere else, don't dealloc image (data/base), all other tables are not shared + FF_BUFFER_TYPE_COPY = 8; ///< just a (modified) copy of some other buffer, don't dealloc anything. + + + FF_I_TYPE = 1; // Intra + FF_P_TYPE = 2; // Predicted + FF_B_TYPE = 3; // Bi-dir predicted + FF_S_TYPE = 4; // S(GMC)-VOP MPEG4 + FF_SI_TYPE = 5; + FF_SP_TYPE = 6; + + FF_BUFFER_HINTS_VALID = $01; // Buffer hints value is meaningful (if 0 ignore) + FF_BUFFER_HINTS_READABLE = $02; // Codec will read from buffer + FF_BUFFER_HINTS_PRESERVE = $04; // User must not alter buffer content + FF_BUFFER_HINTS_REUSABLE = $08; // Codec will reuse the buffer (update) + +type + {** + * Audio Video Frame. + * New fields can be added to the end of FF_COMMON_FRAME with minor version + * bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. No fields should be added into AVFrame before or after + * FF_COMMON_FRAME! + * sizeof(AVFrame) must not be used outside libav*. + *} + PAVFrame = ^TAVFrame; + TAVFrame = record {200} + (** + * pointer to the picture planes. + * This might be different from the first allocated byte + * - encoding: + * - decoding: + *) + data: array [0..3] of pbyte; + linesize: array [0..3] of integer; + (** + * pointer to the first allocated byte of the picture. Can be used in get_buffer/release_buffer. + * This isn't used by libavcodec unless the default get/release_buffer() is used. + * - encoding: + * - decoding: + *) + base: array [0..3] of pbyte; + (** + * 1 -> keyframe, 0-> not + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + key_frame: integer; + (** + * Picture type of the frame, see ?_TYPE below. + * - encoding: Set by libavcodec. for coded_picture (and set by user for input). + * - decoding: Set by libavcodec. + *) + pict_type: integer; + (** + * presentation timestamp in time_base units (time when frame should be shown to user) + * If AV_NOPTS_VALUE then frame_rate = 1/time_base will be assumed. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + *) + pts: int64; + (**\ + * picture number in bitstream order + * - encoding: set by + * - decoding: Set by libavcodec. + *) + coded_picture_number: integer; + (** + * picture number in display order + * - encoding: set by + * - decoding: Set by libavcodec. + *) + display_picture_number: integer; + (** + * quality (between 1 (good) and FF_LAMBDA_MAX (bad)) + * - encoding: Set by libavcodec. for coded_picture (and set by user for input). + * - decoding: Set by libavcodec. + *) + quality: integer; + (** + * buffer age (1->was last buffer and dint change, 2->..., ...). + * Set to INT_MAX if the buffer has not been used yet. + * - encoding: unused + * - decoding: MUST be set by get_buffer(). + *) + age: integer; + (** + * is this picture used as reference + * - encoding: unused + * - decoding: Set by libavcodec. (before get_buffer() call)). + *) + reference: integer; + (** + * QP table + * - encoding: unused + * - decoding: Set by libavcodec. + *) + qscale_table: PShortint; + (** + * QP store stride + * - encoding: unused + * - decoding: Set by libavcodec. + *) + qstride: integer; + (** + * mbskip_table[mb]>=1 if MB didn't change + * stride= mb_width = (width+15)>>4 + * - encoding: unused + * - decoding: Set by libavcodec. + *) + mbskip_table: pbyte; + (** + * motion vector table + * @code + * example: + * int mv_sample_log2= 4 - motion_subsample_log2; + * int mb_width= (width+15)>>4; + * int mv_stride= (mb_width << mv_sample_log2) + 1; + * motion_val[direction][x + y*mv_stride][0->mv_x, 1->mv_y]; + * @endcode + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + //int16_t (*motion_val[2])[2]; + motion_val: array [0..1] of pointer; + (** + * macroblock type table + * mb_type_base + mb_width + 2 + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + mb_type: PCardinal; + (** + * log2 of the size of the block which a single vector in motion_val represents: + * (4->16x16, 3->8x8, 2-> 4x4, 1-> 2x2) + * - encoding: unused + * - decoding: Set by libavcodec. + *) + motion_subsample_log2: byte; + (** + * for some private data of the user + * - encoding: unused + * - decoding: Set by user. + *) + opaque: pointer; + (** + * error + * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR. + * - decoding: unused + *) + error: array [0..3] of uint64; + (** + * type of the buffer (to keep track of who has to deallocate data[*]) + * - encoding: Set by the one who allocates it. + * - decoding: Set by the one who allocates it. + * Note: User allocated (direct rendering) & internal buffers cannot coexist currently. + *) + type_: integer; + (** + * When decoding, this signals how much the picture must be delayed. + * extra_delay = repeat_pict / (2*fps) + * - encoding: unused + * - decoding: Set by libavcodec. + *) + repeat_pict: integer; + (** + * + *) + qscale_type: integer; + (** + * The content of the picture is interlaced. + * - encoding: Set by user. + * - decoding: Set by libavcodec. (default 0) + *) + interlaced_frame: integer; + (** + * If the content is interlaced, is top field displayed first. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + top_field_first: integer; + (** + * Pan scan. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + pan_scan: PAVPanScan; + (** + * Tell user application that palette has changed from previous frame. + * - encoding: ??? (no palette-enabled encoder yet) + * - decoding: Set by libavcodec. (default 0). + *) + palette_has_changed: integer; + (** + * codec suggestion on buffer type if != 0 + * - encoding: unused + * - decoding: Set by libavcodec. (before get_buffer() call)). + *) + buffer_hints: integer; + (** + * DCT coefficients + * - encoding: unused + * - decoding: Set by libavcodec. + *) + dct_coeff: PsmallInt; + (** + * motion referece frame index + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + ref_index: array [0..1] of PShortint; + end; + +const + DEFAULT_FRAME_RATE_BASE = 1001000; + + FF_ASPECT_EXTENDED = 15; + + FF_RC_STRATEGY_XVID = 1; + + FF_BUG_AUTODETECT = 1; ///< autodetection + FF_BUG_OLD_MSMPEG4 = 2; + FF_BUG_XVID_ILACE = 4; + FF_BUG_UMP4 = 8; + FF_BUG_NO_PADDING = 16; + FF_BUG_AMV = 32; + FF_BUG_AC_VLC = 0; ///< will be removed, libavcodec can now handle these non compliant files by default + FF_BUG_QPEL_CHROMA = 64; + FF_BUG_STD_QPEL = 128; + FF_BUG_QPEL_CHROMA2 = 256; + FF_BUG_DIRECT_BLOCKSIZE = 512; + FF_BUG_EDGE = 1024; + FF_BUG_HPEL_CHROMA = 2048; + FF_BUG_DC_CLIP = 4096; + FF_BUG_MS = 8192; ///< workaround various bugs in microsofts broken decoders + //FF_BUG_FAKE_SCALABILITY = 16 //Autodetection should work 100%. + + FF_COMPLIANCE_VERY_STRICT = 2; ///< strictly conform to a older more strict version of the spec or reference software + FF_COMPLIANCE_STRICT = 1; ///< strictly conform to all the things in the spec no matter what consequences + FF_COMPLIANCE_NORMAL = 0; + FF_COMPLIANCE_INOFFICIAL = -1; ///< allow inofficial extensions + FF_COMPLIANCE_EXPERIMENTAL = -2; ///< allow non standarized experimental things + + FF_ER_CAREFUL = 1; + FF_ER_COMPLIANT = 2; + FF_ER_AGGRESSIVE = 3; + FF_ER_VERY_AGGRESSIVE = 4; + + FF_DCT_AUTO = 0; + FF_DCT_FASTINT = 1; + FF_DCT_INT = 2; + FF_DCT_MMX = 3; + FF_DCT_MLIB = 4; + FF_DCT_ALTIVEC = 5; + FF_DCT_FAAN = 6; + + FF_IDCT_AUTO = 0; + FF_IDCT_INT = 1; + FF_IDCT_SIMPLE = 2; + FF_IDCT_SIMPLEMMX = 3; + FF_IDCT_LIBMPEG2MMX = 4; + FF_IDCT_PS2 = 5; + FF_IDCT_MLIB = 6; + FF_IDCT_ARM = 7; + FF_IDCT_ALTIVEC = 8; + FF_IDCT_SH4 = 9; + FF_IDCT_SIMPLEARM = 10; + FF_IDCT_H264 = 11; + FF_IDCT_VP3 = 12; + FF_IDCT_IPP = 13; + FF_IDCT_XVIDMMX = 14; + FF_IDCT_CAVS = 15; + FF_IDCT_SIMPLEARMV5TE= 16; + FF_IDCT_SIMPLEARMV6 = 17; + FF_IDCT_SIMPLEVIS = 18; + FF_IDCT_WMV2 = 19; + + FF_EC_GUESS_MVS = 1; + FF_EC_DEBLOCK = 2; + + FF_MM_FORCE = $80000000; (* force usage of selected flags (OR) *) + (* lower 16 bits - CPU features *) + FF_MM_MMX = $0001; ///< standard MMX + FF_MM_3DNOW = $0004; ///< AMD 3DNOW + FF_MM_MMXEXT = $0002; ///< SSE integer functions or AMD MMX ext + FF_MM_SSE = $0008; ///< SSE functions + FF_MM_SSE2 = $0010; ///< PIV SSE2 functions + FF_MM_3DNOWEXT = $0020; ///< AMD 3DNowExt + FF_MM_SSE3 = $0040; ///< Prescott SSE3 functions + FF_MM_SSSE3 = $0080; ///< Conroe SSSE3 functions + FF_MM_IWMMXT = $0100; ///< XScale IWMMXT + + FF_PRED_LEFT = 0; + FF_PRED_PLANE = 1; + FF_PRED_MEDIAN = 2; + + FF_DEBUG_PICT_INFO = 1; + FF_DEBUG_RC = 2; + FF_DEBUG_BITSTREAM = 4; + FF_DEBUG_MB_TYPE = 8; + FF_DEBUG_QP = 16; + FF_DEBUG_MV = 32; + FF_DEBUG_DCT_COEFF = $00000040; + FF_DEBUG_SKIP = $00000080; + FF_DEBUG_STARTCODE = $00000100; + FF_DEBUG_PTS = $00000200; + FF_DEBUG_ER = $00000400; + FF_DEBUG_MMCO = $00000800; + FF_DEBUG_BUGS = $00001000; + FF_DEBUG_VIS_QP = $00002000; + FF_DEBUG_VIS_MB_TYPE = $00004000; + + FF_DEBUG_VIS_MV_P_FOR = $00000001; //visualize forward predicted MVs of P frames + FF_DEBUG_VIS_MV_B_FOR = $00000002; //visualize forward predicted MVs of B frames + FF_DEBUG_VIS_MV_B_BACK = $00000004; //visualize backward predicted MVs of B frames + + FF_CMP_SAD = 0; + FF_CMP_SSE = 1; + FF_CMP_SATD = 2; + FF_CMP_DCT = 3; + FF_CMP_PSNR = 4; + FF_CMP_BIT = 5; + FF_CMP_RD = 6; + FF_CMP_ZERO = 7; + FF_CMP_VSAD = 8; + FF_CMP_VSSE = 9; + FF_CMP_NSSE = 10; + FF_CMP_W53 = 11; + FF_CMP_W97 = 12; + FF_CMP_DCTMAX = 13; + FF_CMP_DCT264 = 14; + FF_CMP_CHROMA = 256; + + FF_DTG_AFD_SAME = 8; + FF_DTG_AFD_4_3 = 9; + FF_DTG_AFD_16_9 = 10; + FF_DTG_AFD_14_9 = 11; + FF_DTG_AFD_4_3_SP_14_9 = 13; + FF_DTG_AFD_16_9_SP_14_9 = 14; + FF_DTG_AFD_SP_4_3 = 15; + + FF_DEFAULT_QUANT_BIAS = 999999; + + FF_LAMBDA_SHIFT = 7; + FF_LAMBDA_SCALE = (1 shl FF_LAMBDA_SHIFT); + FF_QP2LAMBDA = 118; ///< factor to convert from H.263 QP to lambda + FF_LAMBDA_MAX = (256 * 128 - 1); + + FF_QUALITY_SCALE = FF_LAMBDA_SCALE; //FIXME maybe remove + + FF_CODER_TYPE_VLC = 0; + FF_CODER_TYPE_AC = 1; + FF_CODER_TYPE_RAW = 2; + FF_CODER_TYPE_RLE = 3; + FF_CODER_TYPE_DEFLATE = 4; + + SLICE_FLAG_CODED_ORDER = $0001; ///< draw_horiz_band() is called in coded order instead of display + SLICE_FLAG_ALLOW_FIELD = $0002; ///< allow draw_horiz_band() with field slices (MPEG2 field pics) + SLICE_FLAG_ALLOW_PLANE = $0004; ///< allow draw_horiz_band() with 1 component at a time (SVQ1) + + FF_MB_DECISION_SIMPLE = 0; ///< uses mb_cmp + FF_MB_DECISION_BITS = 1; ///< chooses the one which needs the fewest bits + FF_MB_DECISION_RD = 2; ///< rate distoration + + FF_AA_AUTO = 0; + FF_AA_FASTINT = 1; //not implemented yet + FF_AA_INT = 2; + FF_AA_FLOAT = 3; + + FF_PROFILE_UNKNOWN = -99; + FF_PROFILE_AAC_MAIN = 0; + FF_PROFILE_AAC_LOW = 1; + FF_PROFILE_AAC_SSR = 2; + FF_PROFILE_AAC_LTP = 3; + + FF_LEVEL_UNKNOWN = -99; + + X264_PART_I4X4 = $001; (* Analyse i4x4 *) + X264_PART_I8X8 = $002; (* Analyse i8x8 (requires 8x8 transform) *) + X264_PART_P8X8 = $010; (* Analyse p16x8, p8x16 and p8x8 *) + X264_PART_P4X4 = $020; (* Analyse p8x4, p4x8, p4x4 *) + X264_PART_B8X8 = $100; (* Analyse b16x8, b8x16 and b8x8 *) + + FF_COMPRESSION_DEFAULT = -1; + +const + AVPALETTE_SIZE = 1024; + AVPALETTE_COUNT = 256; + +type +(** + * AVPaletteControl + * This structure defines a method for communicating palette changes + * between and demuxer and a decoder. + * + * @deprecated Use AVPacket to send palette changes instead. + * This is totally broken. + *) + PAVPaletteControl = ^TAVPaletteControl; + TAVPaletteControl = record + (* demuxer sets this to 1 to indicate the palette has changed; + * decoder resets to 0 *) + palette_changed: integer; + + (* 4-byte ARGB palette entries, stored in native byte order; note that + * the individual palette components should be on a 8-bit scale; if + * the palette data comes from a IBM VGA native format, the component + * data is probably 6 bits in size and needs to be scaled *) + palette: array [0..AVPALETTE_COUNT - 1] of cardinal; + end; {deprecated;} + +type + PAVClass = ^TAVClass; + PAVCodecContext = ^TAVCodecContext; + + PAVCodec = ^TAVCodec; + + // int[4] + PQuadIntArray = ^TQuadIntArray; + TQuadIntArray = array[0..3] of integer; + // int (*func)(struct AVCodecContext *c2, void *arg) + TExecuteFunc = function(c2: PAVCodecContext; arg: Pointer): integer; cdecl; + + TAVClass = record {12} + class_name: pchar; + (* actually passing a pointer to an AVCodecContext + or AVFormatContext, which begin with an AVClass. + Needed because av_log is in libavcodec and has no visibility + of AVIn/OutputFormat *) + item_name: function (): pchar; cdecl; + option: PAVOption; + end; + + (** + * main external API structure. + * New fields can be added to the end with minor version bumps. + * Removal, reordering and changes to existing fields require a major + * version bump. + * sizeof(AVCodecContext) must not be used outside libav*. + *) + TAVCodecContext = record {720} + (** + * information on struct for av_log + * - set by avcodec_alloc_context + *) + av_class: PAVClass; + (** + * the average bitrate + * - encoding: Set by user; unused for constant quantizer encoding. + * - decoding: Set by libavcodec. 0 or some bitrate if this info is available in the stream. + *) + bit_rate: integer; + + (** + * number of bits the bitstream is allowed to diverge from the reference. + * the reference can be CBR (for CBR pass1) or VBR (for pass2) + * - encoding: Set by user; unused for constant quantizer encoding. + * - decoding: unused + *) + bit_rate_tolerance: integer; + + (** + * CODEC_FLAG_*. + * - encoding: Set by user. + * - decoding: Set by user. + *) + flags: integer; + + (** + * Some codecs need additional format info. It is stored here. + * If any muxer uses this then ALL demuxers/parsers AND encoders for the + * specific codec MUST set it correctly otherwise stream copy breaks. + * In general use of this field by muxers is not recommanded. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. (FIXME: Is this OK?) + *) + sub_id: integer; + + (** + * Motion estimation algorithm used for video coding. + * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), + * 8 (umh), 9 (iter) [7, 8 are x264 specific, 9 is snow specific] + * - encoding: MUST be set by user. + * - decoding: unused + *) + me_method: integer; + + (** + * some codecs need / can use extradata like Huffman tables. + * mjpeg: Huffman tables + * rv10: additional flags + * mpeg4: global headers (they can be in the bitstream or here) + * The allocated memory should be FF_INPUT_BUFFER_PADDING_SIZE bytes larger + * than extradata_size to avoid prolems if it is read with the bitstream reader. + * The bytewise contents of extradata must not depend on the architecture or CPU endianness. + * - encoding: Set/allocated/freed by libavcodec. + * - decoding: Set/allocated/freed by user. + *) + extradata: pbyte; + extradata_size: integer; + + (** + * This is the fundamental unit of time (in seconds) in terms + * of which frame timestamps are represented. For fixed-fps content, + * timebase should be 1/framerate and timestamp increments should be + * identically 1. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + *) + time_base: TAVRational; + + (* video only *) + (** + * picture width / height. + * - encoding: MUST be set by user. + * - decoding: Set by libavcodec. + * Note: For compatibility it is possible to set this instead of + * coded_width/height before decoding. + *) + width, height: integer; + + (** + * the number of pictures in a group of pictures, or 0 for intra_only + * - encoding: Set by user. + * - decoding: unused + *) + gop_size: integer; + + (** + * Pixel format, see PIX_FMT_xxx. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + pix_fmt: TAVPixelFormat; + + (** + * Frame rate emulation. If not zero, the lower layer (i.e. format handler) + * has to read frames at native frame rate. + * - encoding: Set by user. + * - decoding: unused + *) + rate_emu: integer; + + (** + * If non NULL, 'draw_horiz_band' is called by the libavcodec + * decoder to draw a horizontal band. It improves cache usage. Not + * all codecs can do that. You must check the codec capabilities + * beforehand. + * - encoding: unused + * - decoding: Set by user. + * @param height the height of the slice + * @param y the y position of the slice + * @param type 1->top field, 2->bottom field, 3->frame + * @param offset offset into the AVFrame.data from which the slice should be read + *) + draw_horiz_band: procedure (s: PAVCodecContext; + {const} src: PAVFrame; offset: PQuadIntArray; + y: integer; type_: integer; height: integer); cdecl; + + (* audio only *) + sample_rate: integer; ///< samples per second + channels: integer; + + (** + * audio sample format + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + sample_fmt: TSampleFormat; ///< sample format, currenly unused + + (* The following data should not be initialized. *) + (** + * Samples per packet, initialized when calling 'init'. + *) + frame_size: integer; + frame_number: integer; ///< audio or video frame number + real_pict_num: integer; ///< returns the real picture number of previous encoded frame + + (** + * Number of frames the decoded output will be delayed relative to + * the encoded input. + * - encoding: Set by libavcodec. + * - decoding: unused + *) + delay: integer; + + (* - encoding parameters *) + qcompress: single; ///< amount of qscale change between easy & hard scenes (0.0-1.0) + qblur: single; ///< amount of qscale smoothing over time (0.0-1.0) + + (** + * minimum quantizer + * - encoding: Set by user. + * - decoding: unused + *) + qmin: integer; + + (** + * maximum quantizer + * - encoding: Set by user. + * - decoding: unused + *) + qmax: integer; + + (** + * maximum quantizer difference between frames + * - encoding: Set by user. + * - decoding: unused + *) + max_qdiff: integer; + + (** + * maximum number of B-frames between non-B-frames + * Note: The output will be delayed by max_b_frames+1 relative to the input. + * - encoding: Set by user. + * - decoding: unused + *) + max_b_frames: integer; + + (** + * qscale factor between IP and B-frames + * - encoding: Set by user. + * - decoding: unused + *) + b_quant_factor: single; + + (** obsolete FIXME remove *) + rc_strategy: integer; + + b_frame_strategy: integer; + + (** + * hurry up amount + * - encoding: unused + * - decoding: Set by user. 1-> Skip B-frames, 2-> Skip IDCT/dequant too, 5-> Skip everything except header + * @deprecated Deprecated in favor of skip_idct and skip_frame. + *) + hurry_up: integer; + + codec: PAVCodec; + + priv_data: pointer; + + {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 + (* unused, FIXME remove*) + rtp_mode: integer; + {$IFEND} + + rtp_payload_size: integer; (* The size of the RTP payload: the coder will *) + (* do it's best to deliver a chunk with size *) + (* below rtp_payload_size, the chunk will start *) + (* with a start code on some codecs like H.263 *) + (* This doesn't take account of any particular *) + (* headers inside the transmited RTP payload *) + + + (* The RTP callback: This function is called *) + (* every time the encoder has a packet to send *) + (* Depends on the encoder if the data starts *) + (* with a Start Code (it should) H.263 does. *) + (* mb_nb contains the number of macroblocks *) + (* encoded in the RTP payload *) + rtp_callback: procedure (avctx: PAVCodecContext; data: pointer; + size: integer; mb_nb: integer); cdecl; + + (* statistics, used for 2-pass encoding *) + mv_bits: integer; + header_bits: integer; + i_tex_bits: integer; + p_tex_bits: integer; + i_count: integer; + p_count: integer; + skip_count: integer; + misc_bits: integer; + + (** + * number of bits used for the previously encoded frame + * - encoding: Set by libavcodec. + * - decoding: unused + *) + frame_bits: integer; + + (** + * Private data of the user, can be used to carry app specific stuff. + * - encoding: Set by user. + * - decoding: Set by user. + *) + opaque: pointer; + + codec_name: array [0..31] of char; + codec_type: TCodecType; (* see CODEC_TYPE_xxx *) + codec_id: TCodecID; (* see CODEC_ID_xxx *) + + (** + * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). + * This is used to work around some encoder bugs. + * A demuxer should set this to what is stored in the field used to identify the codec. + * If there are multiple such fields in a container then the demuxer should choose the one + * which maximizes the information about the used codec. + * If the codec tag field in a container is larger then 32 bits then the demuxer should + * remap the longer ID to 32 bits with a table or other structure. Alternatively a new + * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated + * first. + * - encoding: Set by user, if not then the default based on codec_id will be used. + * - decoding: Set by user, will be converted to uppercase by libavcodec during init. + *) + codec_tag: cardinal; // можно array [0..3] of char - тогда видно FOURCC + + (** + * Work around bugs in encoders which sometimes cannot be detected automatically. + * - encoding: Set by user + * - decoding: Set by user + *) + workaround_bugs: integer; + + (** + * luma single coefficient elimination threshold + * - encoding: Set by user. + * - decoding: unused + *) + luma_elim_threshold: integer; + + (** + * chroma single coeff elimination threshold + * - encoding: Set by user. + * - decoding: unused + *) + chroma_elim_threshold: integer; + + (** + * strictly follow the standard (MPEG4, ...). + * - encoding: Set by user. + * - decoding: unused + *) + strict_std_compliance: integer; + + (** + * qscale offset between IP and B-frames + * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). + * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). + * - encoding: Set by user. + * - decoding: unused + *) + b_quant_offset: single; + + (** + * Error resilience; higher values will detect more errors but may + * misdetect some more or less valid parts as errors. + * - encoding: unused + * - decoding: Set by user. + *) + error_resilience: integer; + + (** + * Called at the beginning of each frame to get a buffer for it. + * If pic.reference is set then the frame will be read later by libavcodec. + * avcodec_align_dimensions() should be used to find the required width and + * height, as they normally need to be rounded up to the next multiple of 16. + * - encoding: unused + * - decoding: Set by libavcodec., user can override. + *) + get_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; cdecl; + + (** + * Called to release buffers which where allocated with get_buffer. + * A released buffer can be reused in get_buffer(). + * pic.data[*] must be set to NULL. + * - encoding: unused + * - decoding: Set by libavcodec., user can override. + *) + release_buffer: procedure (c: PAVCodecContext; pic: PAVFrame); cdecl; + + (** + * If 1 the stream has a 1 frame delay during decoding. + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + has_b_frames: integer; + + (** + * number of bytes per packet if constant and known or 0 + * Used by some WAV based audio codecs. + *) + block_align: integer; + + parse_only: integer; (* - decoding only: if true, only parsing is done + (function avcodec_parse_frame()). The frame + data is returned. Only MPEG codecs support this now. *) + + (** + * 0-> h263 quant 1-> mpeg quant + * - encoding: Set by user. + * - decoding: unused + *) + mpeg_quant: integer; + + (** + * pass1 encoding statistics output buffer + * - encoding: Set by libavcodec. + * - decoding: unused + *) + stats_out: pchar; + + (** + * pass2 encoding statistics input buffer + * Concatenated stuff from stats_out of pass1 should be placed here. + * - encoding: Allocated/set/freed by user. + * - decoding: unused + *) + stats_in: pchar; + + (** + * ratecontrol qmin qmax limiting method + * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax. + * - encoding: Set by user. + * - decoding: unused + *) + rc_qsquish: single; + + rc_qmod_amp: single; + rc_qmod_freq: integer; + + (** + * ratecontrol override, see RcOverride + * - encoding: Allocated/set/freed by user. + * - decoding: unused + *) + rc_override: PRcOverride; + rc_override_count: integer; + + (** + * rate control equation + * - encoding: Set by user + * - decoding: unused + *) + rc_eq: pchar; + + (** + * maximum bitrate + * - encoding: Set by user. + * - decoding: unused + *) + rc_max_rate: integer; + + (** + * minimum bitrate + * - encoding: Set by user. + * - decoding: unused + *) + rc_min_rate: integer; + + (** + * decoder bitstream buffer size + * - encoding: Set by user. + * - decoding: unused + *) + rc_buffer_size: integer; + rc_buffer_aggressivity: single; + + (** + * qscale factor between P and I-frames + * If > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset). + * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). + * - encoding: Set by user. + * - decoding: unused + *) + i_quant_factor: single; + + (** + * qscale offset between P and I-frames + * - encoding: Set by user. + * - decoding: unused + *) + i_quant_offset: single; + + (** + * initial complexity for pass1 ratecontrol + * - encoding: Set by user. + * - decoding: unused + *) + rc_initial_cplx: single; + + (** + * DCT algorithm, see FF_DCT_* below + * - encoding: Set by user. + * - decoding: unused + *) + dct_algo: integer; + + (** + * luminance masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + lumi_masking: single; + + (** + * temporary complexity masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + temporal_cplx_masking: single; + + (** + * spatial complexity masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + spatial_cplx_masking: single; + + (** + * p block masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + p_masking: single; + + (** + * darkness masking (0-> disabled) + * - encoding: Set by user. + * - decoding: unused + *) + dark_masking: single; + + {$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 + (* for binary compatibility *) + unused: integer; + {$IFEND} + + (** + * IDCT algorithm, see FF_IDCT_* below. + * - encoding: Set by user. + * - decoding: Set by user. + *) + idct_algo: integer; + + (** + * slice count + * - encoding: Set by libavcodec. + * - decoding: Set by user (or 0). + *) + slice_count: integer; + + (** + * slice offsets in the frame in bytes + * - encoding: Set/allocated by libavcodec. + * - decoding: Set/allocated by user (or NULL). + *) + slice_offset: Pinteger; + + (** + * error concealment flags + * - encoding: unused + * - decoding: Set by user. + *) + error_concealment: integer; + + (** + * dsp_mask could be add used to disable unwanted CPU features + * CPU features (i.e. MMX, SSE. ...) + * + * With the FORCE flag you may instead enable given CPU features. + * (Dangerous: Usable in case of misdetection, improper usage however will + * result into program crash.) + *) + dsp_mask: cardinal; + + (** + * bits per sample/pixel from the demuxer (needed for huffyuv). + * - encoding: Set by libavcodec. + * - decoding: Set by user. + *) + bits_per_sample: integer; + + (** + * prediction method (needed for huffyuv) + * - encoding: Set by user. + * - decoding: unused + *) + prediction_method: integer; + + (** + * sample aspect ratio (0 if unknown) + * Numerator and denominator must be relatively prime and smaller than 256 for some video standards. + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + sample_aspect_ratio: TAVRational; + + (** + * the picture in the bitstream + * - encoding: Set by libavcodec. + * - decoding: Set by libavcodec. + *) + coded_frame: PAVFrame; + + (** + * debug + * - encoding: Set by user. + * - decoding: Set by user. + *) + debug: integer; + + (** + * debug + * - encoding: Set by user. + * - decoding: Set by user. + *) + debug_mv: integer; + + (** + * error + * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR. + * - decoding: unused + *) + error: array [0..3] of uint64; + + (** + * minimum MB quantizer + * - encoding: unused + * - decoding: unused + *) + mb_qmin: integer; + + (** + * maximum MB quantizer + * - encoding: unused + * - decoding: unused + *) + mb_qmax: integer; + + (** + * motion estimation comparison function + * - encoding: Set by user. + * - decoding: unused + *) + me_cmp: integer; + + (** + * subpixel motion estimation comparison function + * - encoding: Set by user. + * - decoding: unused + *) + me_sub_cmp: integer; + (** + * macroblock comparison function (not supported yet) + * - encoding: Set by user. + * - decoding: unused + *) + mb_cmp: integer; + (** + * interlaced DCT comparison function + * - encoding: Set by user. + * - decoding: unused + *) + ildct_cmp: integer; + + (** + * ME diamond size & shape + * - encoding: Set by user. + * - decoding: unused + *) + dia_size: integer; + + (** + * amount of previous MV predictors (2a+1 x 2a+1 square) + * - encoding: Set by user. + * - decoding: unused + *) + last_predictor_count: integer; + + (** + * prepass for motion estimation + * - encoding: Set by user. + * - decoding: unused + *) + pre_me: integer; + + (** + * motion estimation prepass comparison function + * - encoding: Set by user. + * - decoding: unused + *) + me_pre_cmp: integer; + + (** + * ME prepass diamond size & shape + * - encoding: Set by user. + * - decoding: unused + *) + pre_dia_size: integer; + + (** + * subpel ME quality + * - encoding: Set by user. + * - decoding: unused + *) + me_subpel_quality: integer; + + (** + * callback to negotiate the pixelFormat + * @param fmt is the list of formats which are supported by the codec, + * it is terminated by -1 as 0 is a valid format, the formats are ordered by quality. + * The first is always the native one. + * @return the chosen format + * - encoding: unused + * - decoding: Set by user, if not set the native format will be chosen. + *) + get_format: function (s: PAVCodecContext; {const} fmt: PAVPixelFormat): TAVPixelFormat; cdecl; + + (** + * DTG active format information (additional aspect ratio + * information only used in DVB MPEG-2 transport streams) + * 0 if not set. + * + * - encoding: unused + * - decoding: Set by decoder. + *) + dtg_active_format: integer; + + (** + * maximum motion estimation search range in subpel units + * If 0 then no limit. + * + * - encoding: Set by user. + * - decoding: unused + *) + me_range: integer; + + (** + * intra quantizer bias + * - encoding: Set by user. + * - decoding: unused + *) + intra_quant_bias: integer; + + (** + * inter quantizer bias + * - encoding: Set by user. + * - decoding: unused + *) + inter_quant_bias: integer; + + (** + * color table ID + * - encoding: unused + * - decoding: Which clrtable should be used for 8bit RGB images. + * Tables have to be stored somewhere. FIXME + *) + color_table_id: integer; + + (** + * internal_buffer count + * Don't touch, used by libavcodec default_get_buffer(). + *) + internal_buffer_count: integer; + + (** + * internal_buffers + * Don't touch, used by libavcodec default_get_buffer(). + *) + internal_buffer: pointer; + + (** + * Global quality for codecs which cannot change it per frame. + * This should be proportional to MPEG-1/2/4 qscale. + * - encoding: Set by user. + * - decoding: unused + *) + global_quality: integer; + + (** + * coder type + * - encoding: Set by user. + * - decoding: unused + *) + coder_type: integer; + + (** + * context model + * - encoding: Set by user. + * - decoding: unused + *) + context_model: integer; + + { + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + realloc: function (s: PAVCodecContext; buf: Pbyte; buf_size: integer): Pbyte; cdecl; + } + + (** + * slice flags + * - encoding: unused + * - decoding: Set by user. + *) + slice_flags: integer; + + (** + * XVideo Motion Acceleration + * - encoding: forbidden + * - decoding: set by decoder + *) + xvmc_acceleration: integer; + + (** + * macroblock decision mode + * - encoding: Set by user. + * - decoding: unused + *) + mb_decision: integer; + + (** + * custom intra quantization matrix + * - encoding: Set by user, can be NULL. + * - decoding: Set by libavcodec. + *) + intra_matrix: Pword; + + (** + * custom inter quantization matrix + * - encoding: Set by user, can be NULL. + * - decoding: Set by libavcodec. + *) + inter_matrix: Pword; + + (** + * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A'). + * This is used to work around some encoder bugs. + * - encoding: unused + * - decoding: Set by user, will be converted to uppercase by libavcodec during init. + *) + stream_codec_tag: array [0..3] of char; //cardinal; + + (** + * scene change detection threshold + * 0 is default, larger means fewer detected scene changes. + * - encoding: Set by user. + * - decoding: unused + *) + scenechange_threshold: integer; + + (** + * minimum Lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + lmin: integer; + + (** + * maximum Lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + lmax: integer; + + (** + * palette control structure + * - encoding: ??? (no palette-enabled encoder yet) + * - decoding: Set by user. + *) + palctrl: PAVPaletteControl; + + (** + * noise reduction strength + * - encoding: Set by user. + * - decoding: unused + *) + noise_reduction: integer; + + (** + * Called at the beginning of a frame to get cr buffer for it. + * Buffer type (size, hints) must be the same. libavcodec won't check it. + * libavcodec will pass previous buffer in pic, function should return + * same buffer or new buffer with old frame "painted" into it. + * If pic.data[0] == NULL must behave like get_buffer(). + * - encoding: unused + * - decoding: Set by libavcodec., user can override + *) + reget_buffer: function (c: PAVCodecContext; pic: PAVFrame): integer; cdecl; + + (** + * Number of bits which should be loaded into the rc buffer before decoding starts. + * - encoding: Set by user. + * - decoding: unused + *) + rc_initial_buffer_occupancy: integer; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + inter_threshold: integer; + + (** + * CODEC_FLAG2_* + * - encoding: Set by user. + * - decoding: Set by user. + *) + flags2: integer; + + (** + * Simulates errors in the bitstream to test error concealment. + * - encoding: Set by user. + * - decoding: unused + *) + error_rate: integer; + + (** + * MP3 antialias algorithm, see FF_AA_* below. + * - encoding: unused + * - decoding: Set by user. + *) + antialias_algo: integer; + + (** + * quantizer noise shaping + * - encoding: Set by user. + * - decoding: unused + *) + quantizer_noise_shaping: integer; + + (** + * thread count + * is used to decide how many independent tasks should be passed to execute() + * - encoding: Set by user. + * - decoding: Set by user. + *) + thread_count: integer; + + (** + * The codec may call this to execute several independent things. + * It will return only after finishing all tasks. + * The user may replace this with some multithreaded implementation, + * the default implementation will execute the parts serially. + * @param count the number of things to execute + * - encoding: Set by libavcodec, user can override. + * - decoding: Set by libavcodec, user can override. + *) + execute: function (c: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: PInteger; count: integer): integer; cdecl; + + (** + * thread opaque + * Can be used by execute() to store some per AVCodecContext stuff. + * - encoding: set by execute() + * - decoding: set by execute() + *) + thread_opaque: pointer; + + (** + * Motion estimation threshold below which no motion estimation is + * performed, but instead the user specified motion vectors are used. + * + * - encoding: Set by user. + * - decoding: unused + *) + me_threshold: integer; + + (** + * Macroblock threshold below which the user specified macroblock types will be used. + * - encoding: Set by user. + * - decoding: unused + *) + mb_threshold: integer; + + (** + * precision of the intra DC coefficient - 8 + * - encoding: Set by user. + * - decoding: unused + *) + intra_dc_precision: integer; + + (** + * noise vs. sse weight for the nsse comparsion function + * - encoding: Set by user. + * - decoding: unused + *) + nsse_weight: integer; + + (** + * Number of macroblock rows at the top which are skipped. + * - encoding: unused + * - decoding: Set by user. + *) + skip_top: integer; + + (** + * Number of macroblock rows at the bottom which are skipped. + * - encoding: unused + * - decoding: Set by user. + *) + skip_bottom: integer; + + (** + * profile + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + profile: integer; + + (** + * level + * - encoding: Set by user. + * - decoding: Set by libavcodec. + *) + level: integer; + + (** + * low resolution decoding, 1-> 1/2 size, 2->1/4 size + * - encoding: unused + * - decoding: Set by user. + *) + lowres: integer; + + (** + * Bitstream width / height, may be different from width/height if lowres + * or other things are used. + * - encoding: unused + * - decoding: Set by user before init if known. Codec should override / dynamically change if needed. + *) + coded_width, coded_height: integer; + + (** + * frame skip threshold + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_threshold: integer; + + (** + * frame skip factor + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_factor: integer; + + (** + * frame skip exponent + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_exp: integer; + + (** + * frame skip comparison function + * - encoding: Set by user. + * - decoding: unused + *) + frame_skip_cmp: integer; + + (** + * Border processing masking, raises the quantizer for mbs on the borders + * of the picture. + * - encoding: Set by user. + * - decoding: unused + *) + border_masking: single; + + (** + * minimum MB lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + mb_lmin: integer; + + (** + * maximum MB lagrange multipler + * - encoding: Set by user. + * - decoding: unused + *) + mb_lmax: integer; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + me_penalty_compensation: integer; + + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + skip_loop_filter: TAVDiscard; + + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + skip_idct: TAVDiscard; + + (** + * + * - encoding: unused + * - decoding: Set by user. + *) + skip_frame: TAVDiscard; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + bidir_refine: integer; + + (** + * + * - encoding: Set by user. + * - decoding: unused + *) + brd_scale: integer; + + (** + * constant rate factor - quality-based VBR - values ~correspond to qps + * - encoding: Set by user. + * - decoding: unused + *) + {$IF LIBAVCODEC_VERSION >= 51021000} // 51.21.0 + crf: single; + {$ELSE} + crf: integer; + {$IFEND} + + (** + * constant quantization parameter rate control method + * - encoding: Set by user. + * - decoding: unused + *) + cqp: integer; + + (** + * minimum GOP size + * - encoding: Set by user. + * - decoding: unused + *) + keyint_min: integer; + + (** + * number of reference frames + * - encoding: Set by user. + * - decoding: unused + *) + refs: integer; + + (** + * chroma qp offset from luma + * - encoding: Set by user. + * - decoding: unused + *) + chromaoffset: integer; + + (** + * Influences how often B-frames are used. + * - encoding: Set by user. + * - decoding: unused + *) + bframebias: integer; + + (** + * trellis RD quantization + * - encoding: Set by user. + * - decoding: unused + *) + trellis: integer; + + (** + * Reduce fluctuations in qp (before curve compression). + * - encoding: Set by user. + * - decoding: unused + *) + complexityblur: single; + + (** + * in-loop deblocking filter alphac0 parameter + * alpha is in the range -6...6 + * - encoding: Set by user. + * - decoding: unused + *) + deblockalpha: integer; + + (** + * in-loop deblocking filter beta parameter + * beta is in the range -6...6 + * - encoding: Set by user. + * - decoding: unused + *) + deblockbeta: integer; + + (** + * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4 + * - encoding: Set by user. + * - decoding: unused + *) + partitions: integer; + + (** + * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal) + * - encoding: Set by user. + * - decoding: unused + *) + directpred: integer; + + (** + * Audio cutoff bandwidth (0 means "automatic") + * - encoding: Set by user. + * - decoding: unused + *) + cutoff: integer; + + (** + * Multiplied by qscale for each frame and added to scene_change_score. + * - encoding: Set by user. + * - decoding: unused + *) + scenechange_factor: integer; + + (** + * + * Note: Value depends upon the compare function used for fullpel ME. + * - encoding: Set by user. + * - decoding: unused + *) + mv0_threshold: integer; + + (** + * Adjusts sensitivity of b_frame_strategy 1. + * - encoding: Set by user. + * - decoding: unused + *) + b_sensitivity: integer; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + compression_level: integer; + + (** + * Sets whether to use LPC mode - used by FLAC encoder. + * - encoding: Set by user. + * - decoding: unused + *) + use_lpc: integer; + + (** + * LPC coefficient precision - used by FLAC encoder + * - encoding: Set by user. + * - decoding: unused + *) + lpc_coeff_precision: integer; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + min_prediction_order: integer; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + max_prediction_order: integer; + + (** + * search method for selecting prediction order + * - encoding: Set by user. + * - decoding: unused + *) + prediction_order_method: integer; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + min_partition_order: integer; + + (** + * - encoding: Set by user. + * - decoding: unused + *) + max_partition_order: integer; + + {$IF LIBAVCODEC_VERSION >= 51026000} // 51.26.0 + (** + * GOP timecode frame start number, in non drop frame format + * - encoding: Set by user. + * - decoding: unused + *) + timecode_frame_start: int64; + {$IFEND} + + {$IF LIBAVCODEC_VERSION >= 51042000} // 51.42.0 + (** + * Decoder should decode to this many channels if it can (0 for default) + * - encoding: unused + * - decoding: Set by user. + *) + request_channels: integer; + {$IFEND} + + {$IF LIBAVCODEC_VERSION > 51049000} // > 51.49.0 + (** + * Percentage of dynamic range compression to be applied by the decoder. + * The default value is 1.0, corresponding to full compression. + * - encoding: unused + * - decoding: Set by user. + *) + drc_scale: Single; + {$IFEND} + end; + +(** + * AVCodec. + *) + TAVCodec = record + name: pchar; + type_: TCodecType; + id: TCodecID; + priv_data_size: integer; + init: function (avctx: PAVCodecContext): integer; cdecl; (* typo corretion by the Creative CAT *) + encode: function (avctx: PAVCodecContext; buf: pchar; buf_size: integer; data: pointer): integer; cdecl; + close: function (avctx: PAVCodecContext): integer; cdecl; + decode: function (avctx: PAVCodecContext; outdata: pointer; outdata_size: PInteger; + buf: pchar; buf_size: integer): integer; cdecl; + capabilities: integer; + next: PAVCodec; + flush: procedure (avctx: PAVCodecContext); cdecl; + {const} supported_framerates: PAVRational; ///array of supported framerates, or NULL if any, array is terminated by {0,0} + {const} pix_fmts: PAVPixelFormat; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1 + end; + +(** + * four components are given, that's all. + * the last component is alpha + *) + PAVPicture = ^TAVPicture; + TAVPicture = record + data: array [0..3] of pchar; + linesize: array [0..3] of integer; ///< number of bytes per line + end; + +type + PAVSubtitleRect = ^TAVSubtitleRect; + TAVSubtitleRect = record + x: word; + y: word; + w: word; + h: word; + nb_colors: word; + linesize: integer; + rgba_palette: PCardinal; + bitmap: pchar; + end; + + PAVSubtitle = ^TAVSubtitle; + TAVSubtitle = record {20} + format: word; (* 0 = graphics *) + start_display_time: cardinal; (* relative to packet pts, in ms *) + end_display_time: cardinal; (* relative to packet pts, in ms *) + num_rects: cardinal; + rects: PAVSubtitleRect; + end; + + +(* resample.c *) + + PReSampleContext = pointer; + PAVResampleContext = pointer; + PImgReSampleContext = pointer; + +function audio_resample_init (output_channels: integer; input_channels: integer; + output_rate: integer; input_rate: integer): PReSampleContext; + cdecl; external av__codec; + +function audio_resample (s: PReSampleContext; output: PSmallint; input: PSmallint; nb_samples: integer): integer; + cdecl; external av__codec; + +procedure audio_resample_close (s: PReSampleContext); + cdecl; external av__codec; + + +function av_resample_init (out_rate: integer; in_rate: integer; filter_length: integer; + log2_phase_count: integer; linear: integer; cutoff: double): PAVResampleContext; + cdecl; external av__codec; + +function av_resample (c: PAVResampleContext; dst: PSmallint; src: PSmallint; consumed: PInteger; + src_size: integer; dst_size: integer; update_ctx: integer): integer; + cdecl; external av__codec; + +procedure av_resample_compensate (c: PAVResampleContext; sample_delta: integer; + compensation_distance: integer); + cdecl; external av__codec; + +procedure av_resample_close (c: PAVResampleContext); + cdecl; external av__codec; + + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +(* YUV420 format is assumed ! *) + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_resample_init (output_width: integer; output_height: integer; + input_width: integer; input_height: integer): PImgReSampleContext; + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_resample_full_init (owidth: integer; oheight: integer; + iwidth: integer; iheight: integer; + topBand: integer; bottomBand: integer; + leftBand: integer; rightBand: integer; + padtop: integer; padbottom: integer; + padleft: integer; padright: integer): PImgReSampleContext; + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +procedure img_resample (s: PImgReSampleContext; output: PAVPicture; {const} input: PAVPicture); + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +procedure img_resample_close (s: PImgReSampleContext); + cdecl; external av__codec; deprecated; + +{$IFEND} + +(** + * Allocate memory for a picture. Call avpicture_free to free it. + * + * @param picture the picture to be filled in. + * @param pix_fmt the format of the picture. + * @param width the width of the picture. + * @param height the height of the picture. + * @return Zero if successful, a negative value if not. + *) +function avpicture_alloc (picture: PAVPicture; pix_fmt: TAVPixelFormat; + width: integer; height: integer): integer; + cdecl; external av__codec; + +(** + * Free a picture previously allocated by avpicture_alloc(). + * + * @param picture the AVPicture to be freed + *) +procedure avpicture_free (picture: PAVPicture); + cdecl; external av__codec; + +(** + * Fill in the AVPicture fields. + * The fields of the given AVPicture are filled in by using the 'ptr' address + * which points to the image data buffer. Depending on the specified picture + * format, one or multiple image data pointers and line sizes will be set. + * If a planar format is specified, several pointers will be set pointing to + * the different picture planes and the line sizes of the different planes + * will be stored in the lines_sizes array. + * + * @param picture AVPicture whose fields are to be filled in + * @param ptr Buffer which will contain or contains the actual image data + * @param pix_fmt The format in which the picture data is stored. + * @param width the width of the image in pixels + * @param height the height of the image in pixels + * @return size of the image data in bytes + *) +function avpicture_fill (picture: PAVPicture; ptr: pointer; + pix_fmt: TAVPixelFormat; width: integer; height: integer): integer; + cdecl; external av__codec; + +function avpicture_layout ({const} src: PAVPicture; pix_fmt: TAVPixelFormat; + width: integer; height: integer; + dest: pchar; dest_size: integer): integer; + cdecl; external av__codec; + +(** + * Calculate the size in bytes that a picture of the given width and height + * would occupy if stored in the given picture format. + * + * @param pix_fmt the given picture format + * @param width the width of the image + * @param height the height of the image + * @return Image data size in bytes + *) +function avpicture_get_size (pix_fmt: TAVPixelFormat; width: integer; height: integer): integer; + cdecl; external av__codec; + +procedure avcodec_get_chroma_sub_sample (pix_fmt: TAVPixelFormat; h_shift: Pinteger; v_shift: pinteger); + cdecl; external av__codec; + +function avcodec_get_pix_fmt_name(pix_fmt: TAVPixelFormat): pchar; + cdecl; external av__codec; + +procedure avcodec_set_dimensions(s: PAVCodecContext; width: integer; height: integer); + cdecl; external av__codec; + +function avcodec_get_pix_fmt(const name: pchar): TAVPixelFormat; + cdecl; external av__codec; + +function avcodec_pix_fmt_to_codec_tag(p: TAVPixelFormat): cardinal; + cdecl; external av__codec; + +const + FF_LOSS_RESOLUTION = $0001; {**< loss due to resolution change *} + FF_LOSS_DEPTH = $0002; {**< loss due to color depth change *} + FF_LOSS_COLORSPACE = $0004; {**< loss due to color space conversion *} + FF_LOSS_ALPHA = $0008; {**< loss of alpha bits *} + FF_LOSS_COLORQUANT = $0010; {**< loss due to color quantization *} + FF_LOSS_CHROMA = $0020; {**< loss of chroma (e.g. RGB to gray conversion) *} + +(** + * Computes what kind of losses will occur when converting from one specific + * pixel format to another. + * When converting from one pixel format to another, information loss may occur. + * For example, when converting from RGB24 to GRAY, the color information will + * be lost. Similarly, other losses occur when converting from some formats to + * other formats. These losses can involve loss of chroma, but also loss of + * resolution, loss of color depth, loss due to the color space conversion, loss + * of the alpha bits or loss due to color quantization. + * avcodec_get_fix_fmt_loss() informs you about the various types of losses + * which will occur when converting from one pixel format to another. + * + * @param[in] dst_pix_fmt destination pixel format + * @param[in] src_pix_fmt source pixel format + * @param[in] has_alpha Whether the source pixel format alpha channel is used. + * @return Combination of flags informing you what kind of losses will occur. + *) +function avcodec_get_pix_fmt_loss (dst_pix_fmt: TAVPixelFormat; src_pix_fmt: TAVPixelFormat; + has_alpha: integer): integer; + cdecl; external av__codec; + +(** + * Finds the best pixel format to convert to given a certain source pixel + * format. When converting from one pixel format to another, information loss + * may occur. For example, when converting from RGB24 to GRAY, the color + * information will be lost. Similarly, other losses occur when converting from + * some formats to other formats. avcodec_find_best_pix_fmt() searches which of + * the given pixel formats should be used to suffer the least amount of loss. + * The pixel formats from which it chooses one, are determined by the + * \p pix_fmt_mask parameter. + * + * @code + * src_pix_fmt = PIX_FMT_YUV420P; + * pix_fmt_mask = (1 << PIX_FMT_YUV422P) || (1 << PIX_FMT_RGB24); + * dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss); + * @endcode + * + * @param[in] pix_fmt_mask bitmask determining which pixel format to choose from + * @param[in] src_pix_fmt source pixel format + * @param[in] has_alpha Whether the source pixel format alpha channel is used. + * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. + * @return The best pixel format to convert to or -1 if none was found. + *) +function avcodec_find_best_pix_fmt (pix_fmt_mask: integer; src_pix_fmt: TAVPixelFormat; + has_alpha: integer; loss_ptr: pinteger): integer; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 +(** + * Print in buf the string corresponding to the pixel format with + * number pix_fmt, or an header if pix_fmt is negative. + * + * @param[in] buf the buffer where to write the string + * @param[in] buf_size the size of buf + * @param[in] pix_fmt the number of the pixel format to print the corresponding info string, or + * a negative value to print the corresponding header. + * Meaningful values for obtaining a pixel format info vary from 0 to PIX_FMT_NB -1. + *) +procedure avcodec_pix_fmt_string (buf: PChar; buf_size: integer; pix_fmt: integer); + cdecl; external av__codec; +{$IFEND} + +const + FF_ALPHA_TRANSP = $0001; {* image has some totally transparent pixels *} + FF_ALPHA_SEMI_TRANSP = $0002; {* image has some transparent pixels *} + +(** + * Tell if an image really has transparent alpha values. + * @return ored mask of FF_ALPHA_xxx constants + *) +function img_get_alpha_info ({const} src: PAVPicture; + pix_fmt: TAVPixelFormat; + width: integer; height: integer): integer; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +(** + * convert among pixel formats + * @deprecated Use the software scaler (swscale) instead. + *) +function img_convert (dst: PAVPicture; dst_pix_fmt: TAVPixelFormat; + const src: PAVPicture; pix_fmt: TAVPixelFormat; + width: integer; height: integer): integer; + cdecl; external av__codec; deprecated; +{$IFEND} + +(* deinterlace a picture *) +(* deinterlace - if not supported return -1 *) +function avpicture_deinterlace (dst: PAVPicture; const src: PAVPicture; + pix_fmt: TAVPixelFormat; width: integer; height: integer): integer; + cdecl; external av__codec; + +{* external high level API *} + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +{ +var + first_avcodec: PAVCodec; external av__codec; +} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 +function av_codec_next(c: PAVCodec): PAVCodec; + cdecl; external av__codec; +{$IFEND} + +(* returns LIBAVCODEC_VERSION_INT constant *) +function avcodec_version (): cardinal; + cdecl; external av__codec; + +(* returns LIBAVCODEC_BUILD constant *) +function avcodec_build (): cardinal; + cdecl; external av__codec; + +(** + * Initializes libavcodec. + * + * @warning This function \e must be called before any other libavcodec + * function. + *) +procedure avcodec_init (); + cdecl; external av__codec; + +procedure register_avcodec (format: PAVCodec); + cdecl; external av__codec; + +(** + * Finds a registered encoder with a matching codec ID. + * + * @param id CodecID of the requested encoder + * @return An encoder if one was found, NULL otherwise. + *) +function avcodec_find_encoder (id: TCodecID): PAVCodec; + cdecl; external av__codec; + +(** + * Finds a registered encoder with the specified name. + * + * @param name name of the requested encoder + * @return An encoder if one was found, NULL otherwise. + *) +function avcodec_find_encoder_by_name (name: pchar): PAVCodec; + cdecl; external av__codec; + +(** + * Finds a registered decoder with a matching codec ID. + * + * @param id CodecID of the requested decoder + * @return A decoder if one was found, NULL otherwise. + *) +function avcodec_find_decoder(id: TCodecID): PAVCodec; + cdecl; external av__codec; + +(** + * Finds a registered decoder with the specified name. + * + * @param name name of the requested decoder + * @return A decoder if one was found, NULL otherwise. + *) +function avcodec_find_decoder_by_name (name: pchar): PAVCodec; + cdecl; external av__codec; +procedure avcodec_string(buf: pchar; buf_size: integer; enc: PAVCodecContext; encode: integer); + cdecl; external av__codec; + +(** + * Sets the fields of the given AVCodecContext to default values. + * + * @param s The AVCodecContext of which the fields should be set to default values. + *) +procedure avcodec_get_context_defaults (s: PAVCodecContext); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +procedure avcodec_get_context_defaults2(s: PAVCodecContext; ctype: TCodecType); + cdecl; external av__codec; +{$IFEND} + +(** + * Allocates an AVCodecContext and sets its fields to default values. The + * resulting struct can be deallocated by simply calling av_free(). + * + * @return An AVCodecContext filled with default values or NULL on failure. + * @see avcodec_get_context_defaults + *) +function avcodec_alloc_context(): PAVCodecContext; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +(** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! + * we WILL change its arguments and name a few times! *) +function avcodec_alloc_context2(ctype: TCodecType): PAVCodecContext; + cdecl; external av__codec; +{$IFEND} + +(** + * Sets the fields of the given AVFrame to default values. + * + * @param pic The AVFrame of which the fields should be set to default values. + *) +procedure avcodec_get_frame_defaults (pic: PAVFrame); + cdecl; external av__codec; + +(** + * Allocates an AVFrame and sets its fields to default values. The resulting + * struct can be deallocated by simply calling av_free(). + * + * @return An AVFrame filled with default values or NULL on failure. + * @see avcodec_get_frame_defaults + *) +function avcodec_alloc_frame(): PAVFrame; + cdecl; external av__codec; + +function avcodec_default_get_buffer (s: PAVCodecContext; pic: PAVFrame): integer; + cdecl; external av__codec; +procedure avcodec_default_release_buffer (s: PAVCodecContext; pic: PAVFrame); + cdecl; external av__codec; +function avcodec_default_reget_buffer (s: PAVCodecContext; pic: PAVFrame): integer; + cdecl; external av__codec; +procedure avcodec_align_dimensions(s: PAVCodecContext; width: Pinteger; height: PInteger); + cdecl; external av__codec; + +(** + * Checks if the given dimension of a picture is valid, meaning that all + * bytes of the picture can be addressed with a signed int. + * + * @param[in] w Width of the picture. + * @param[in] h Height of the picture. + * @return Zero if valid, a negative value if invalid. + *) +function avcodec_check_dimensions (av_log_ctx: pointer; w: cardinal; h: cardinal): integer; + cdecl; external av__codec; +function avcodec_default_get_format(s: PAVCodecContext; const fmt: PAVPixelFormat): TAVPixelFormat; + cdecl; external av__codec; + +function avcodec_thread_init (s: PAVCodecContext; thread_count: integer): integer; + cdecl; external av__codec; +procedure avcodec_thread_free (s: PAVCodecContext); + cdecl; external av__codec; +function avcodec_thread_execute (s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: Pinteger; count: integer): integer; + cdecl; external av__codec; +function avcodec_default_execute (s: PAVCodecContext; func: TExecuteFunc; arg: PPointer; ret: Pinteger; count: integer): integer; + cdecl; external av__codec; +//FIXME func typedef + +(** + * Initializes the AVCodecContext to use the given AVCodec. Prior to using this + * function the context has to be allocated. + * + * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), + * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for + * retrieving a codec. + * + * @warning This function is not thread safe! + * + * @code + * avcodec_register_all(); + * codec = avcodec_find_decoder(CODEC_ID_H264); + * if (!codec) + * exit(1); + * + * context = avcodec_alloc_context(); + * + * if (avcodec_open(context, codec) < 0) + * exit(1); + * @endcode + * + * @param avctx The context which will be set up to use the given codec. + * @param codec The codec to use within the context. + * @return zero on success, a negative value on error + * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder + *) +function avcodec_open (avctx: PAVCodecContext; codec: PAVCodec): integer; + cdecl; external av__codec; + +(** + * @deprecated Use avcodec_decode_audio2() instead. + *) +function avcodec_decode_audio (avctx: PAVCodecContext; samples: Pword; + var frame_size_ptr: integer; + buf: pchar; buf_size: integer): integer; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51030000} // 51.30.0 +(** + * Decodes an audio frame from \p buf into \p samples. + * The avcodec_decode_audio2() function decodes an audio frame from the input + * buffer \p buf of size \p buf_size. To decode it, it makes use of the + * audio codec which was coupled with \p avctx using avcodec_open(). The + * resulting decoded frame is stored in output buffer \p samples. If no frame + * could be decompressed, \p frame_size_ptr is zero. Otherwise, it is the + * decompressed frame size in \e bytes. + * + * @warning You \e must set \p frame_size_ptr to the allocated size of the + * output buffer before calling avcodec_decode_audio2(). + * + * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than + * the actual read bytes because some optimized bitstream readers read 32 or 64 + * bits at once and could read over the end. + * + * @warning The end of the input buffer \p buf should be set to 0 to ensure that + * no overreading happens for damaged MPEG streams. + * + * @note You might have to align the input buffer \p buf and output buffer \p + * samples. The alignment requirements depend on the CPU: On some CPUs it isn't + * necessary at all, on others it won't work at all if not aligned and on others + * it will work but it will have an impact on performance. In practice, the + * bitstream should have 4 byte alignment at minimum and all sample data should + * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If + * the linesize is not a multiple of 16 then there's no sense in aligning the + * start of the buffer to 16. + * + * @param avctx the codec context + * @param[out] samples the output buffer + * @param[in,out] frame_size_ptr the output buffer size in bytes + * @param[in] buf the input buffer + * @param[in] buf_size the input buffer size in bytes + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + *) +function avcodec_decode_audio2(avctx : PAVCodecContext; samples : PSmallint; + var frame_size_ptr : integer; + buf: pchar; buf_size: integer): integer; + cdecl; external av__codec; +{$IFEND} + +(** + * Decodes a video frame from \p buf into \p picture. + * The avcodec_decode_video() function decodes a video frame from the input + * buffer \p buf of size \p buf_size. To decode it, it makes use of the + * video codec which was coupled with \p avctx using avcodec_open(). The + * resulting decoded frame is stored in \p picture. + * + * @warning The input buffer must be \c FF_INPUT_BUFFER_PADDING_SIZE larger than + * the actual read bytes because some optimized bitstream readers read 32 or 64 + * bits at once and could read over the end. + * + * @warning The end of the input buffer \p buf should be set to 0 to ensure that + * no overreading happens for damaged MPEG streams. + * + * @note You might have to align the input buffer \p buf and output buffer \p + * samples. The alignment requirements depend on the CPU: on some CPUs it isn't + * necessary at all, on others it won't work at all if not aligned and on others + * it will work but it will have an impact on performance. In practice, the + * bitstream should have 4 byte alignment at minimum and all sample data should + * be 16 byte aligned unless the CPU doesn't need it (AltiVec and SSE do). If + * the linesize is not a multiple of 16 then there's no sense in aligning the + * start of the buffer to 16. + * + * @param avctx the codec context + * @param[out] picture The AVFrame in which the decoded video frame will be stored. + * @param[in] buf the input buffer + * @param[in] buf_size the size of the input buffer in bytes + * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. + * @return On error a negative value is returned, otherwise the number of bytes + * used or zero if no frame could be decompressed. + *) +function avcodec_decode_video (avctx: PAVCodecContext; picture: PAVFrame; + var got_picture_ptr: integer; + buf: PByte; buf_size: integer): integer; + cdecl; external av__codec; + +(* Decode a subtitle message. Return -1 if error, otherwise return the + * number of bytes used. If no subtitle could be decompressed, + * got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. *) +function avcodec_decode_subtitle (avctx: PAVCodecContext; sub: PAVSubtitle; + var got_sub_ptr: integer; + {const} buf: pchar; buf_size: integer): integer; + cdecl; external av__codec; +function avcodec_parse_frame (avctx: PAVCodecContext; pdata: PPointer; + data_size_ptr: pinteger; + buf: pchar; buf_size: integer): integer; + cdecl; external av__codec; + +(** + * Encodes an audio frame from \p samples into \p buf. + * The avcodec_encode_audio() function encodes an audio frame from the input + * buffer \p samples. To encode it, it makes use of the audio codec which was + * coupled with \p avctx using avcodec_open(). The resulting encoded frame is + * stored in output buffer \p buf. + * + * @note The output buffer should be at least \c FF_MIN_BUFFER_SIZE bytes large. + * + * @param avctx the codec context + * @param[out] buf the output buffer + * @param[in] buf_size the output buffer size + * @param[in] samples the input buffer containing the samples + * The number of samples read from this buffer is frame_size*channels, + * both of which are defined in \p avctx. + * @return On error a negative value is returned, on success zero or the number + * of bytes used to encode the data read from the input buffer. + *) +function avcodec_encode_audio (avctx: PAVCodecContext; buf: PByte; + buf_size: integer; {const} samples: PWord): integer; + cdecl; external av__codec; + +(** + * Encodes a video frame from \p pict into \p buf. + * The avcodec_encode_video() function encodes a video frame from the input + * \p pict. To encode it, it makes use of the video codec which was coupled with + * \p avctx using avcodec_open(). The resulting encoded bytes representing the + * frame are stored in the output buffer \p buf. The input picture should be + * stored using a specific format, namely \c avctx.pix_fmt. + * + * @param avctx the codec context + * @param[out] buf the output buffer for the bitstream of encoded frame + * @param[in] buf_size the size of the output buffer in bytes + * @param[in] pict the input picture to encode + * @return On error a negative value is returned, on success zero or the number + * of bytes used from the input buffer. + *) +function avcodec_encode_video (avctx: PAVCodecContext; buf: PByte; + buf_size: integer; pict: PAVFrame): integer; + cdecl; external av__codec; +function avcodec_encode_subtitle (avctx: PAVCodecContext; buf: pchar; + buf_size: integer; {const} sub: PAVSubtitle): integer; + cdecl; external av__codec; + +function avcodec_close (avctx: PAVCodecContext): integer; + cdecl; external av__codec; + +procedure avcodec_register_all (); + cdecl; external av__codec; + +(** + * Flush buffers, should be called when seeking or when switching to a different stream. + *) +procedure avcodec_flush_buffers (avctx: PAVCodecContext); + cdecl; external av__codec; + +procedure avcodec_default_free_buffers (s: PAVCodecContext); + cdecl; external av__codec; + +(* misc useful functions *) + +(** + * Returns a single letter to describe the given picture type \p pict_type. + * + * @param[in] pict_type the picture type + * @return A single character representing the picture type. + *) +function av_get_pict_type_char (pict_type: integer): char; + cdecl; external av__codec; + +(** + * Returns codec bits per sample. + * + * @param[in] codec_id the codec + * @return Number of bits per sample or zero if unknown for the given codec. + *) +function av_get_bits_per_sample (codec_id: TCodecID): integer; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 +(** + * Returns sample format bits per sample. + * + * @param[in] sample_fmt the sample format + * @return Number of bits per sample or zero if unknown for the given sample format. + *) +function av_get_bits_per_sample_format(sample_fmt: TSampleFormat): integer; + cdecl; external av__codec; +{$IFEND} + +const + AV_PARSER_PTS_NB = 4; + PARSER_FLAG_COMPLETE_FRAMES = $0001; + +type + {* frame parsing *} + PAVCodecParserContext = ^TAVCodecParserContext; + PAVCodecParser = ^TAVCodecParser; + + TAVCodecParserContext = record + priv_data: pointer; + parser: PAVCodecParser; + frame_offset: int64; (* offset of the current frame *) + cur_offset: int64; (* current offset (incremented by each av_parser_parse()) *) + last_frame_offset: int64; (* offset of the last frame *) + (* video info *) + pict_type: integer; (* XXX: put it back in AVCodecContext *) + repeat_pict: integer; (* XXX: put it back in AVCodecContext *) + pts: int64; (* pts of the current frame *) + dts: int64; (* dts of the current frame *) + + (* private data *) + last_pts: int64; + last_dts: int64; + fetch_timestamp: integer; + + cur_frame_start_index: integer; + cur_frame_offset: array [0..AV_PARSER_PTS_NB - 1] of int64; + cur_frame_pts: array [0..AV_PARSER_PTS_NB - 1] of int64; + cur_frame_dts: array [0..AV_PARSER_PTS_NB - 1] of int64; + + flags: integer; + + {$IF LIBAVCODEC_VERSION >= 51040003} // 51.40.3 + offset: int64; ///< byte offset from starting packet start + last_offset: int64; + {$IFEND} + end; + + TAVCodecParser = record + codec_ids: array [0..4] of integer; (* several codec IDs are permitted *) + priv_data_size: integer; + parser_init: function (s: PAVCodecParserContext): integer; cdecl; + parser_parse: function (s: PAVCodecParserContext; avctx: PAVCodecContext; + {const} poutbuf: PPointer; poutbuf_size: PInteger; + {const} buf: pchar; buf_size: integer): integer; cdecl; + parser_close: procedure (s: PAVCodecParserContext); cdecl; + split: function (avctx: PAVCodecContext; {const} buf: pchar; + buf_size: integer): integer; cdecl; + next: PAVCodecParser; + end; + + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +{ +var + av_first_parser: PAVCodecParser; external av__codec; +} +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 +function av_parser_next(c: PAVCodecParser): PAVCodecParser; + cdecl; external av__codec; +{$IFEND} + +procedure av_register_codec_parser (parser: PAVCodecParser); + cdecl; external av__codec; + +function av_parser_init (codec_id: integer): PAVCodecParserContext; + cdecl; external av__codec; + +function av_parser_parse (s: PAVCodecParserContext; + avctx: PAVCodecContext; + poutbuf: PPointer; poutbuf_size: pinteger; + const buf: pchar; buf_size: integer; + pts: int64; dts: int64): integer; + cdecl; external av__codec; +function av_parser_change (s: PAVCodecParserContext; + avctx: PAVCodecContext; + poutbuf: PPointer; poutbuf_size: PInteger; + const buf: pchar; buf_size: integer; keyframe: integer): integer; + cdecl; external av__codec; +procedure av_parser_close (s: PAVCodecParserContext); + cdecl; external av__codec; + +type + PAVBitStreamFilterContext = ^TAVBitStreamFilterContext; + PAVBitStreamFilter = ^TAVBitStreamFilter; + + TAVBitStreamFilterContext = record + priv_data: pointer; + filter: PAVBitStreamFilter; + parser: PAVCodecParserContext; + next: PAVBitStreamFilterContext; + end; + + TAVBitStreamFilter = record + name: pchar; + priv_data_size: integer; + filter: function (bsfc: PAVBitStreamFilterContext; + avctx: PAVCodecContext; args: pchar; + poutbuf: PPointer; poutbuf_size: PInteger; + buf: PByte; buf_size: integer; keyframe: integer): integer; cdecl; + {$IF LIBAVCODEC_VERSION >= 51043000} // 51.43.0 + close: procedure (bsfc: PAVBitStreamFilterContext); + {$IFEND} + next: PAVBitStreamFilter; + end; + +procedure av_register_bitstream_filter (bsf: PAVBitStreamFilter); + cdecl; external av__codec; + +function av_bitstream_filter_init (name: pchar): PAVBitStreamFilterContext; + cdecl; external av__codec; + +function av_bitstream_filter_filter (bsfc: PAVBitStreamFilterContext; + avctx: PAVCodecContext; args: pchar; + poutbuf: PPointer; poutbuf_size: PInteger; + buf: PByte; buf_size: integer; keyframe: integer): integer; + cdecl; external av__codec; +procedure av_bitstream_filter_close (bsf: PAVBitStreamFilterContext); + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51049000} // 51.49.0 +function av_bitstream_filter_next(f: PAVBitStreamFilter): PAVBitStreamFilter; + cdecl; external av__codec; +{$IFEND} + +(* memory *) + +(** + * Reallocates the given block if it is not large enough, otherwise it + * does nothing. + * + * @see av_realloc + *) +procedure av_fast_realloc (ptr: pointer; size: PCardinal; min_size: Cardinal); + cdecl; external av__codec; + +(* for static data only *) + +(** + * Frees all static arrays and resets their pointers to 0. + * Call this function to release all statically allocated tables. + * + * @deprecated. Code which uses av_free_static is broken/misdesigned + * and should correctly use static arrays + * + *) +procedure av_free_static (); + cdecl; external av__codec; deprecated; + +(** + * Allocation of static arrays. + * + * @warning Do not use for normal allocation. + * + * @param[in] size The amount of memory you need in bytes. + * @return block of memory of the requested size + * @deprecated. Code which uses av_mallocz_static is broken/misdesigned + * and should correctly use static arrays + *) +procedure av_mallocz_static(size: cardinal); + cdecl; external av__codec; deprecated; + +{$IF LIBAVCODEC_VERSION < 51035000} // 51.35.0 +procedure av_realloc_static(ptr: pointer; size: Cardinal); + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION >= 51039000} // 51.39.0 +(** + * Copy image 'src' to 'dst'. + *) +procedure av_picture_copy(dst: PAVPicture; {const} src: PAVPicture; + pix_fmt: integer; width: integer; height: integer); + cdecl; external av__codec; + +(** + * Crop image top and left side. + *) +function av_picture_crop(dst: PAVPicture; {const} src: PAVPicture; + pix_fmt: integer; top_band: integer; left_band: integer): integer; + cdecl; external av__codec; + +(** + * Pad image. + *) +function av_picture_pad(dst: PAVPicture; {const} src: PAVPicture; height: integer; width: integer; pix_fmt: integer; + padtop: integer; padbottom: integer; padleft: integer; padright: integer; color: PInteger): integer; + cdecl; external av__codec; +{$IFEND} + +{$IF LIBAVCODEC_VERSION < 52000000} // 52.0.0 +(** + * @deprecated Use the software scaler (swscale) instead. + *) +procedure img_copy (dst: PAVPicture; const src: PAVPicture; + pix_fmt: TAVPixelFormat; width: integer; height: integer); + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_crop (dst: PAVPicture; const src: PAVPicture; + pix_fmt: TAVPixelFormat; top_band, left_band: integer): integer; + cdecl; external av__codec; deprecated; + +(** + * @deprecated Use the software scaler (swscale) instead. + *) +function img_pad (dst: PAVPicture; const src: PAVPicture; height, width: integer; + pix_fmt: TAVPixelFormat; padtop, padbottom, padleft, padright: integer; + color: PInteger): integer; + cdecl; external av__codec; deprecated; +{$IFEND} + +function av_xiphlacing(s: PByte; v: Cardinal): Cardinal; + cdecl; external av__codec; + +{$IF LIBAVCODEC_VERSION >= 51041000} // 51.41.0 +(** + * Parses \p str and put in \p width_ptr and \p height_ptr the detected values. + * + * @return 0 in case of a successful parsing, a negative value otherwise + * @param[in] str the string to parse: it has to be a string in the format + * x or a valid video frame size abbreviation. + * @param[in,out] width_ptr pointer to the variable which will contain the detected + * frame width value + * @param[in,out] height_ptr pointer to the variable which will contain the detected + * frame height value + *) +function av_parse_video_frame_size(width_ptr: PInteger; height_ptr: PInteger; {const} str: PChar): integer; + cdecl; external av__codec; + +(** + * Parses \p str and put in \p frame_rate the detected values. + * + * @return 0 in case of a successful parsing, a negative value otherwise + * @param[in] str the string to parse: it has to be a string in the format + * /, a float number or a valid video rate abbreviation + * @param[in,out] frame_rate pointer to the AVRational which will contain the detected + * frame rate + *) +function av_parse_video_frame_rate(frame_rate: PAVRational; {const} str: PChar): integer; + cdecl; external av__codec; +{$IFEND} + +(* +{* error handling *} +#if EINVAL > 0 +#define AVERROR(e) (-(e)) {**< Returns a negative error code from a POSIX error code, to return from library functions. *} +#define AVUNERROR(e) (-(e)) {**< Returns a POSIX error code from a library function error return value. *} +#else +{* Some platforms have E* and errno already negated. *} +#define AVERROR(e) (e) +#define AVUNERROR(e) (e) +#endif + +const + AVERROR_UNKNOWN AVERROR(EINVAL) {**< unknown error *} + AVERROR_IO AVERROR(EIO) {**< I/O error *} + AVERROR_NUMEXPECTED AVERROR(EDOM) {**< Number syntax expected in filename. *} + AVERROR_INVALIDDATA AVERROR(EINVAL) {**< invalid data found *} + AVERROR_NOMEM AVERROR(ENOMEM) {**< not enough memory *} + AVERROR_NOFMT AVERROR(EILSEQ) {**< unknown format *} + AVERROR_NOTSUPP AVERROR(ENOSYS) {**< Operation not supported. *} + AVERROR_NOENT AVERROR(ENOENT) {**< No such file or directory. *} + AVERROR_PATCHWELCOME -MKTAG('P','A','W','E') {**< Not yet implemented in FFmpeg. Patches welcome. *} +*) + +const + AVERROR_UNKNOWN =(-1); (* unknown error *) + AVERROR_IO =(-2); (* i/o error *) + AVERROR_NUMEXPECTED =(-3); (* number syntax expected in filename *) + AVERROR_INVALIDDATA =(-4); (* invalid data found *) + AVERROR_NOMEM =(-5); (* not enough memory *) + AVERROR_NOFMT =(-6); (* unknown format *) + AVERROR_NOTSUPP =(-7); (* operation not supported *) + +implementation + +end. -- cgit v1.2.3