/* * copyright (c) 2001 Fabrice Bellard * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_AVCODEC_H #define AVCODEC_AVCODEC_H #ifdef __cplusplus #define FF_EXPORT extern "C" #else #define FF_EXPORT #endif /** * @file * external API header */ #include "ffcodecs.h" #include "ffImgfmt.h" #ifdef HAVE_AV_CONFIG_H #include "libavutil/common.h" #endif #include #include "libavutil/avutil.h" #include "libavutil/cpu.h" #define LIBAVCODEC_VERSION_MAJOR 52 #define LIBAVCODEC_VERSION_MINOR 87 #define LIBAVCODEC_VERSION_MICRO 5 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ LIBAVCODEC_VERSION_MINOR, \ LIBAVCODEC_VERSION_MICRO) #define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \ LIBAVCODEC_VERSION_MINOR, \ LIBAVCODEC_VERSION_MICRO) #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION) /** * Those FF_API_* defines are not part of public API. * They may change, break or disappear at any time. */ #ifndef FF_API_PALETTE_CONTROL #define FF_API_PALETTE_CONTROL (LIBAVCODEC_VERSION_MAJOR < 54) #endif #ifndef FF_API_MM_FLAGS #define FF_API_MM_FLAGS (LIBAVCODEC_VERSION_MAJOR < 53) #endif #define AV_NOPTS_VALUE INT64_C(0x8000000000000000) #define AV_TIME_BASE 1000000 static const AVRational AV_TIME_BASE_Q={1, AV_TIME_BASE}; #if LIBAVCODEC_VERSION_MAJOR < 53 #define CodecType AVMediaType #define CODEC_TYPE_UNKNOWN AVMEDIA_TYPE_UNKNOWN #define CODEC_TYPE_VIDEO AVMEDIA_TYPE_VIDEO #define CODEC_TYPE_AUDIO AVMEDIA_TYPE_AUDIO #define CODEC_TYPE_DATA AVMEDIA_TYPE_DATA #define CODEC_TYPE_SUBTITLE AVMEDIA_TYPE_SUBTITLE #define CODEC_TYPE_ATTACHMENT AVMEDIA_TYPE_ATTACHMENT #define CODEC_TYPE_NB AVMEDIA_TYPE_NB #endif /** * all in native-endian format */ enum SampleFormat { SAMPLE_FMT_NONE = -1, SAMPLE_FMT_U8, ///< unsigned 8 bits SAMPLE_FMT_S16, ///< signed 16 bits SAMPLE_FMT_S32, ///< signed 32 bits SAMPLE_FMT_FLT, ///< float SAMPLE_FMT_DBL, ///< double SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if dynamically linking to libavcodec }; /* Audio channel masks */ #define CH_FRONT_LEFT 0x00000001 #define CH_FRONT_RIGHT 0x00000002 #define CH_FRONT_CENTER 0x00000004 #define CH_LOW_FREQUENCY 0x00000008 #define CH_BACK_LEFT 0x00000010 #define CH_BACK_RIGHT 0x00000020 #define CH_FRONT_LEFT_OF_CENTER 0x00000040 #define CH_FRONT_RIGHT_OF_CENTER 0x00000080 #define CH_BACK_CENTER 0x00000100 #define CH_SIDE_LEFT 0x00000200 #define CH_SIDE_RIGHT 0x00000400 #define CH_TOP_CENTER 0x00000800 #define CH_TOP_FRONT_LEFT 0x00001000 #define CH_TOP_FRONT_CENTER 0x00002000 #define CH_TOP_FRONT_RIGHT 0x00004000 #define CH_TOP_BACK_LEFT 0x00008000 #define CH_TOP_BACK_CENTER 0x00010000 #define CH_TOP_BACK_RIGHT 0x00020000 #define CH_STEREO_LEFT 0x20000000 ///< Stereo downmix. #define CH_STEREO_RIGHT 0x40000000 ///< See CH_STEREO_LEFT. /** Channel mask value used for AVCodecContext.request_channel_layout to indicate that the user requests the channel order of the decoder output to be the native codec channel order. */ #define CH_LAYOUT_NATIVE 0x8000000000000000LL /* Audio channel convenience macros */ #define CH_LAYOUT_MONO (CH_FRONT_CENTER) #define CH_LAYOUT_STEREO (CH_FRONT_LEFT|CH_FRONT_RIGHT) #define CH_LAYOUT_2_1 (CH_LAYOUT_STEREO|CH_BACK_CENTER) #define CH_LAYOUT_SURROUND (CH_LAYOUT_STEREO|CH_FRONT_CENTER) #define CH_LAYOUT_4POINT0 (CH_LAYOUT_SURROUND|CH_BACK_CENTER) #define CH_LAYOUT_2_2 (CH_LAYOUT_STEREO|CH_SIDE_LEFT|CH_SIDE_RIGHT) #define CH_LAYOUT_QUAD (CH_LAYOUT_STEREO|CH_BACK_LEFT|CH_BACK_RIGHT) #define CH_LAYOUT_5POINT0 (CH_LAYOUT_SURROUND|CH_SIDE_LEFT|CH_SIDE_RIGHT) #define CH_LAYOUT_5POINT1 (CH_LAYOUT_5POINT0|CH_LOW_FREQUENCY) #define CH_LAYOUT_5POINT0_BACK (CH_LAYOUT_SURROUND|CH_BACK_LEFT|CH_BACK_RIGHT) #define CH_LAYOUT_5POINT1_BACK (CH_LAYOUT_5POINT0_BACK|CH_LOW_FREQUENCY) #define CH_LAYOUT_7POINT0 (CH_LAYOUT_5POINT0|CH_BACK_LEFT|CH_BACK_RIGHT) #define CH_LAYOUT_7POINT1 (CH_LAYOUT_5POINT1|CH_BACK_LEFT|CH_BACK_RIGHT) #define CH_LAYOUT_7POINT1_WIDE (CH_LAYOUT_5POINT1_BACK|\ CH_FRONT_LEFT_OF_CENTER|CH_FRONT_RIGHT_OF_CENTER) #define CH_LAYOUT_STEREO_DOWNMIX (CH_STEREO_LEFT|CH_STEREO_RIGHT) /* in bytes */ #define 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. */ #define FF_INPUT_BUFFER_PADDING_SIZE 8 /** * minimum encoding buffer size * Used to avoid some checks during header writing. */ #define FF_MIN_BUFFER_SIZE 16384 /** * motion estimation type. */ enum Motion_Est_ID { ME_ZERO = 1, ///< no search, that is use 0,0 vector whenever one is needed ME_FULL, ME_LOG, ME_PHODS, ME_EPZS, ///< enhanced predictive zonal search ME_X1, ///< reserved for experiments ME_HEX, ///< hexagon based search ME_UMH, ///< uneven multi-hexagon search ME_ITER, ///< iterative search ME_TESA, ///< transformed exhaustive search algorithm }; enum AVDiscard{ /* 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 }; enum AVColorPrimaries{ AVCOL_PRI_BT709 =1, ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B AVCOL_PRI_UNSPECIFIED=2, AVCOL_PRI_BT470M =4, AVCOL_PRI_BT470BG =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM AVCOL_PRI_SMPTE170M =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC AVCOL_PRI_SMPTE240M =7, ///< functionally identical to above AVCOL_PRI_FILM =8, AVCOL_PRI_NB , ///< Not part of ABI }; enum AVColorTransferCharacteristic{ AVCOL_TRC_BT709 =1, ///< also ITU-R BT1361 AVCOL_TRC_UNSPECIFIED=2, AVCOL_TRC_GAMMA22 =4, ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM AVCOL_TRC_GAMMA28 =5, ///< also ITU-R BT470BG AVCOL_TRC_NB , ///< Not part of ABI }; enum AVColorSpace{ AVCOL_SPC_RGB =0, AVCOL_SPC_BT709 =1, ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B AVCOL_SPC_UNSPECIFIED=2, AVCOL_SPC_FCC =4, AVCOL_SPC_BT470BG =5, ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 AVCOL_SPC_SMPTE170M =6, ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC / functionally identical to above AVCOL_SPC_SMPTE240M =7, AVCOL_SPC_NB , ///< Not part of ABI }; enum AVColorRange{ AVCOL_RANGE_UNSPECIFIED=0, AVCOL_RANGE_MPEG =1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges AVCOL_RANGE_JPEG =2, ///< the normal 2^n-1 "JPEG" YUV ranges AVCOL_RANGE_NB , ///< Not part of ABI }; /** * X X 3 4 X X are luma samples, * 1 2 1-6 are possible chroma positions * X X 5 6 X 0 is undefined/unknown position */ enum AVChromaLocation{ AVCHROMA_LOC_UNSPECIFIED=0, AVCHROMA_LOC_LEFT =1, ///< mpeg2/4, h264 default AVCHROMA_LOC_CENTER =2, ///< mpeg1, jpeg, h263 AVCHROMA_LOC_TOPLEFT =3, ///< DV AVCHROMA_LOC_TOP =4, AVCHROMA_LOC_BOTTOMLEFT =5, AVCHROMA_LOC_BOTTOM =6, AVCHROMA_LOC_NB , ///< Not part of ABI }; /** * LPC analysis type */ enum AVLPCType { AV_LPC_TYPE_DEFAULT = -1, ///< use the codec default LPC type AV_LPC_TYPE_NONE = 0, ///< do not use LPC prediction or use all zero coefficients AV_LPC_TYPE_FIXED = 1, ///< fixed LPC coefficients AV_LPC_TYPE_LEVINSON = 2, ///< Levinson-Durbin recursion AV_LPC_TYPE_CHOLESKY = 3, ///< Cholesky factorization AV_LPC_TYPE_NB , ///< Not part of ABI }; /** * H.264 VUI colour primaries (matrix_coefficients) */ typedef enum { YCbCr_RGB_coeff_GBR = 0, YCbCr_RGB_coeff_ITUR_BT_709 = 1, YCbCr_RGB_coeff_Unspecified = 2, YCbCr_RGB_coeff_Reserved = 3, YCbCr_RGB_coeff_US_Federal_Regulations_2003_73_682 = 4, YCbCr_RGB_coeff_ITUR_BT_601_625 = 5, YCbCr_RGB_coeff_ITUR_BT_601_525 = 6, YCbCr_RGB_coeff_SMPTE240M = 7, YCbCr_RGB_coeff_YCgCo = 8 } YCbCr_RGB_MatrixCoefficientsType; typedef enum { VIDEO_FULL_RANGE_TV = 0, VIDEO_FULL_RANGE_PC = 1, VIDEO_FULL_RANGE_INVALID = 2 } VideoFullRangeType; typedef struct RcOverride{ int start_frame; int end_frame; int qscale; // If this is 0 then quality_factor will be used instead. float quality_factor; } RcOverride; #define FF_MAX_B_FRAMES 16 /* encoding support These flags can be passed in AVCodecContext.flags before initialization. Note: Not everything is supported yet. */ #define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale. #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263. #define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC. #define CODEC_FLAG_GMC 0x0020 ///< Use GMC. #define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>. #define CODEC_FLAG_PART 0x0080 ///< 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. */ #define CODEC_FLAG_INPUT_PRESERVED 0x0100 #define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode. #define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode. #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG). #define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale. #define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges. #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding. #define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random location instead of only at frame boundaries. */ #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization. #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT. #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay. #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< Use alternate scan. #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe. #define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT). /* Fx : Flag for h263+ extra options */ #define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction #define CODEC_FLAG_H263P_UMV 0x02000000 ///< unlimited motion vector #define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp. #define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon. #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H.263 alternative inter VLC #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data. #define CODEC_FLAG_CLOSED_GOP 0x80000000 #define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks. #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size. #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding. #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata. #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow B-frames to be used as references. #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for B-frames #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters #define CODEC_FLAG2_BRDO 0x00000400 ///< B-frame rate-distortion optimization #define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< Use MPEG-2 intra VLC table. #define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC). #define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format. #define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping #define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. #define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer. #define CODEC_FLAG2_BIT_RESERVOIR 0x00020000 ///< Use a bit reservoir when encoding if possible #define CODEC_FLAG2_MBTREE 0x00040000 ///< Use macroblock tree ratecontrol (x264 only) #define CODEC_FLAG2_PSY 0x00080000 ///< Use psycho visual optimizations. #define CODEC_FLAG2_SSIM 0x00100000 ///< Compute SSIM during encoding, error[] values are undefined. #define CODEC_FLAG2_INTRA_REFRESH 0x00200000 ///< Use periodic insertion of intra blocks instead of keyframes. /* Unsupported options : * Syntax Arithmetic coding (SAC) * Reference Picture Selection * Independent Segment Decoding */ /* /Fx */ /* codec capabilities */ #define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback. /** * Codec uses get_buffer() for allocating buffers and supports custom allocators. * If not set, it might not use get_buffer() at all or use operations that * assume the buffer was allocated by avcodec_default_get_buffer. */ #define CODEC_CAP_DR1 0x0002 /* If 'parse_only' field is true, then avcodec_parse_frame() can be used. */ #define CODEC_CAP_PARSE_ONLY 0x0004 #define CODEC_CAP_TRUNCATED 0x0008 /* Codec can export data for HW decoding (XvMC). */ #define CODEC_CAP_HWACCEL 0x0010 /** * Codec has a nonzero delay and needs to be fed with NULL at the end to get the delayed data. * If this is not set, the codec is guaranteed to never be fed with NULL data. */ #define CODEC_CAP_DELAY 0x0020 /** * Codec can be fed a final frame with a smaller size. * This can be used to prevent truncation of the last audio samples. */ #define CODEC_CAP_SMALL_LAST_FRAME 0x0040 /** * Codec can export data for HW decoding (VDPAU). */ #define CODEC_CAP_HWACCEL_VDPAU 0x0080 /** * Codec can output multiple frames per AVPacket * Normally demuxers return one frame at a time, demuxers which do not do * are connected to a parser to split what they return into proper frames. * This flag is reserved to the very rare category of codecs which have a * bitstream that cannot be split into frames without timeconsuming * operations like full decoding. Demuxers carring such bitstreams thus * may return multiple frames in a packet. This has many disadvantages like * prohibiting stream copy in many cases thus it should only be considered * as a last resort. */ #define CODEC_CAP_SUBFRAMES 0x0100 /** * Codec is experimental and is thus avoided in favor of non experimental * encoders */ #define CODEC_CAP_EXPERIMENTAL 0x0200 /** * Codec supports frame-level multithreading. */ #define CODEC_CAP_FRAME_THREADS 0x0400 //The following defines may change, don't expect compatibility if you use them. #define MB_TYPE_INTRA4x4 0x0001 #define MB_TYPE_INTRA16x16 0x0002 //FIXME H.264-specific #define MB_TYPE_INTRA_PCM 0x0004 //FIXME H.264-specific #define MB_TYPE_16x16 0x0008 #define MB_TYPE_16x8 0x0010 #define MB_TYPE_8x16 0x0020 #define MB_TYPE_8x8 0x0040 #define MB_TYPE_INTERLACED 0x0080 #define MB_TYPE_DIRECT2 0x0100 //FIXME #define MB_TYPE_ACPRED 0x0200 #define MB_TYPE_GMC 0x0400 #define MB_TYPE_SKIP 0x0800 #define MB_TYPE_P0L0 0x1000 #define MB_TYPE_P1L0 0x2000 #define MB_TYPE_P0L1 0x4000 #define MB_TYPE_P1L1 0x8000 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0) #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1) #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1) #define MB_TYPE_QUANT 0x00010000 #define MB_TYPE_CBP 0x00020000 //Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 0mv, ...) /** * Pan Scan area. * This specifies the area which should be displayed. * Note there may be multiple such areas for one frame. */ typedef struct AVPanScan{ /** * id * - encoding: Set by user. * - decoding: Set by libavcodec. */ int id; /** * width and height in 1/16 pel * - encoding: Set by user. * - decoding: Set by libavcodec. */ int width; int height; /** * position of the top left corner in 1/16 pel for up to 3 fields/frames * - encoding: Set by user. * - decoding: Set by libavcodec. */ int16_t position[3][2]; }AVPanScan; #define FF_COMMON_FRAME \ /**\ * pointer to the picture planes.\ * This might be different from the first allocated byte\ * - encoding: \ * - decoding: \ */\ uint8_t *data[4];\ int linesize[4];\ /**\ * 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: \ */\ uint8_t *base[4];\ /**\ * 1 -> keyframe, 0-> not\ * - encoding: Set by libavcodec.\ * - decoding: Set by libavcodec.\ */\ int key_frame;\ \ /**\ * 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.\ */\ int pict_type;\ \ /**\ * 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.\ */\ int64_t pts;\ \ /**\ * picture number in bitstream order\ * - encoding: set by\ * - decoding: Set by libavcodec.\ */\ int coded_picture_number;\ /**\ * picture number in display order\ * - encoding: set by\ * - decoding: Set by libavcodec.\ */\ int display_picture_number;\ \ /**\ * 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.\ */\ int quality; \ \ /**\ * 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().\ */\ int age;\ \ /**\ * is this picture used as reference\ * The values for this are the same as the MpegEncContext.picture_structure\ * variable, that is 1->top field, 2->bottom field, 3->frame/both fields.\ * Set to 4 for delayed, non-reference frames.\ * - encoding: unused\ * - decoding: Set by libavcodec. (before get_buffer() call)).\ */\ int reference;\ \ /**\ * QP table\ * - encoding: unused\ * - decoding: Set by libavcodec.\ */\ int8_t *qscale_table;\ /**\ * QP store stride\ * - encoding: unused\ * - decoding: Set by libavcodec.\ */\ int qstride;\ \ /**\ * mbskip_table[mb]>=1 if MB didn't change\ * stride= mb_width = (width+15)>>4\ * - encoding: unused\ * - decoding: Set by libavcodec.\ */\ uint8_t *mbskip_table;\ \ /**\ * 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];\ \ /**\ * macroblock type table\ * mb_type_base + mb_width + 2\ * - encoding: Set by user.\ * - decoding: Set by libavcodec.\ */\ uint32_t *mb_type;\ \ /**\ * 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.\ */\ uint8_t motion_subsample_log2;\ \ /**\ * for some private data of the user\ * - encoding: unused\ * - decoding: Set by user.\ */\ void *opaque;\ \ /**\ * error\ * - encoding: Set by libavcodec. if flags&CODEC_FLAG_PSNR.\ * - decoding: unused\ */\ uint64_t error[4];\ \ /**\ * 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.\ */\ int type;\ \ /**\ * When decoding, this signals how much the picture must be delayed.\ * extra_delay = repeat_pict / (2*fps)\ * - encoding: unused\ * - decoding: Set by libavcodec.\ */\ int repeat_pict;\ \ /**\ * \ */\ int qscale_type;\ \ /**\ * The content of the picture is interlaced.\ * - encoding: Set by user.\ * - decoding: Set by libavcodec. (default 0)\ */\ int interlaced_frame;\ \ /**\ * If the content is interlaced, is top field displayed first.\ * - encoding: Set by user.\ * - decoding: Set by libavcodec.\ */\ int top_field_first;\ \ /**\ * Pan scan.\ * - encoding: Set by user.\ * - decoding: Set by libavcodec.\ */\ AVPanScan *pan_scan;\ \ /**\ * Tell user application that palette has changed from previous frame.\ * - encoding: ??? (no palette-enabled encoder yet)\ * - decoding: Set by libavcodec. (default 0).\ */\ int palette_has_changed;\ \ /**\ * codec suggestion on buffer type if != 0\ * - encoding: unused\ * - decoding: Set by libavcodec. (before get_buffer() call)).\ */\ int buffer_hints;\ \ /**\ * DCT coefficients\ * - encoding: unused\ * - decoding: Set by libavcodec.\ */\ short *dct_coeff;\ \ /**\ * motion reference frame index\ * the order in which these are stored can depend on the codec.\ * - encoding: Set by user.\ * - decoding: Set by libavcodec.\ */\ int8_t *ref_index[2];\ \ /**\ * reordered opaque 64bit number (generally a PTS) from AVCodecContext.reordered_opaque\ * output in AVFrame.reordered_opaque\ * - encoding: unused\ * - decoding: Read by user.\ */\ int64_t reordered_opaque;\ int64_t reordered_opaque2; /* ffdshow custom code */\ int64_t reordered_opaque3; /* ffdshow custom code */\ \ /**\ * hardware accelerator private data (FFmpeg allocated)\ * - encoding: unused\ * - decoding: Set by libavcodec\ */\ void *hwaccel_picture_private;\ \ /* ffdshow custom code */\ int mb_width,mb_height,mb_stride,b8_stride;\ int num_sprite_warping_points,real_sprite_warping_points;\ int play_flags;\ \ /* ffmpeg-mt */\ struct AVCodecContext *owner;\ void *thread_opaque;\ \ /* ffdshow custom stuffs (begin) */\ \ int h264_poc_decoded;\ int h264_poc_outputed;\ int h264_frame_num_decoded;\ int h264_max_frame_num;\ \ int mpeg2_sequence_end_flag;\ \ /**\ * video_full_range_flag\ * - encoding: unused\ * - decoding: Set by libavcodec. -1: invalid, 0: TV (16-235) 1: PC (1-254)\ */\ VideoFullRangeType video_full_range_flag;\ /**\ * YCbCr_RGB_matrix_coefficients\ * - encoding: unused\ * - decoding: Set by libavcodec.\ */\ YCbCr_RGB_MatrixCoefficientsType YCbCr_RGB_matrix_coefficients; /* ffdshow custom stuffs (end) */ #define FF_QSCALE_TYPE_MPEG1 0 #define FF_QSCALE_TYPE_MPEG2 1 #define FF_QSCALE_TYPE_H264 2 #define FF_QSCALE_TYPE_VP56 3 #define FF_BUFFER_TYPE_INTERNAL 1 #define FF_BUFFER_TYPE_USER 2 ///< direct rendering buffers (image is (de)allocated by user) #define FF_BUFFER_TYPE_SHARED 4 ///< Buffer from somewhere else; don't deallocate image (data/base), all other tables are not shared. #define FF_BUFFER_TYPE_COPY 8 ///< Just a (modified) copy of some other buffer, don't deallocate anything. #define FF_I_TYPE 1 ///< Intra #define FF_P_TYPE 2 ///< Predicted #define FF_B_TYPE 3 ///< Bi-dir predicted #define FF_S_TYPE 4 ///< S(GMC)-VOP MPEG4 #define FF_SI_TYPE 5 ///< Switching Intra #define FF_SP_TYPE 6 ///< Switching Predicted #define FF_BI_TYPE 7 #define FF_BUFFER_HINTS_VALID 0x01 // Buffer hints value is meaningful (if 0 ignore). #define FF_BUFFER_HINTS_READABLE 0x02 // Codec will read from buffer. #define FF_BUFFER_HINTS_PRESERVE 0x04 // User must not alter buffer content. #define FF_BUFFER_HINTS_REUSABLE 0x08 // Codec will reuse the buffer (update). typedef struct AVPacket { /** * Presentation timestamp in AVStream->time_base units; the time at which * the decompressed packet will be presented to the user. * Can be AV_NOPTS_VALUE if it is not stored in the file. * pts MUST be larger or equal to dts as presentation cannot happen before * decompression, unless one wants to view hex dumps. Some formats misuse * the terms dts and pts/cts to mean something different. Such timestamps * must be converted to true pts/dts before they are stored in AVPacket. */ int64_t pts; /** * Decompression timestamp in AVStream->time_base units; the time at which * the packet is decompressed. * Can be AV_NOPTS_VALUE if it is not stored in the file. */ int64_t dts; uint8_t *data; int size; int stream_index; int flags; /** * Duration of this packet in AVStream->time_base units, 0 if unknown. * Equals next_pts - this_pts in presentation order. */ int duration; void (*destruct)(struct AVPacket *); void *priv; int64_t pos; ///< byte position in stream, -1 if unknown /** * Time difference in AVStream->time_base units from the pts of this * packet to the point at which the output from the decoder has converged * independent from the availability of previous frames. That is, the * frames are virtually identical no matter if decoding started from * the very first frame or from this keyframe. * Is AV_NOPTS_VALUE if unknown. * This field is not the display duration of the current packet. * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY * set. * * The purpose of this field is to allow seeking in streams that have no * keyframes in the conventional sense. It corresponds to the * recovery point SEI in H.264 and match_time_delta in NUT. It is also * essential for some types of subtitle streams to ensure that all * subtitles are correctly displayed after seeking. */ int64_t convergence_duration; } AVPacket; #define AV_PKT_FLAG_KEY 0x0001 #if LIBAVCODEC_VERSION_MAJOR < 53 #define PKT_FLAG_KEY AV_PKT_FLAG_KEY #endif /** * 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*. */ typedef struct AVFrame { FF_COMMON_FRAME } AVFrame; /** * 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*. */ struct TlibavcodecExt; typedef struct AVCodecContext { /** * information on struct for av_log * - set by avcodec_alloc_context */ const AVClass *av_class; /** * 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. */ int bit_rate; /** * 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 */ int bit_rate_tolerance; /** * CODEC_FLAG_*. * - encoding: Set by user. * - decoding: Set by user. */ int flags; /** * 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?) */ int sub_id; /** * Motion estimation algorithm used for video coding. * 1 (zero), 2 (full), 3 (log), 4 (phods), 5 (epzs), 6 (x1), 7 (hex), * 8 (umh), 9 (iter), 10 (tesa) [7, 8, 10 are x264 specific, 9 is snow specific] * - encoding: MUST be set by user. * - decoding: unused */ int me_method; /** * 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. */ const uint8_t *extradata; int extradata_size; /** * 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. */ AVRational time_base; /* 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. */ int width, height; #define FF_ASPECT_EXTENDED 15 /** * the number of pictures in a group of pictures, or 0 for intra_only * - encoding: Set by user. * - decoding: unused */ int gop_size; /** * Pixel format, see PIX_FMT_xxx. * May be set by the demuxer if known from headers. * May be overriden by the decoder if it knows better. * - encoding: Set by user. * - decoding: Set by user if known, overridden by libavcodec if known */ enum PixelFormat pix_fmt; /** * 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 */ int rate_emu; /** * If non NULL, 'draw_horiz_band' is called by the libavcodec * decoder to draw a horizontal band. It improves cache usage. Not * all codecs can do that. You must check the codec capabilities * beforehand. * The function is also used by hardware acceleration APIs. * It is called at least once during frame decoding to pass * the data needed for hardware render. * In that mode instead of pixel data, AVFrame points to * a structure specific to the acceleration API. The application * reads the structure and can change some fields to indicate progress * or mark state. * - encoding: unused * - decoding: Set by user. * @param height the height of the slice * @param y the y position of the slice * @param type 1->top field, 2->bottom field, 3->frame * @param offset offset into the AVFrame.data from which the slice should be read */ void (*draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[4], int y, int type, int height); /* audio only */ int sample_rate; ///< samples per second int channels; ///< number of audio channels /** * audio sample format * - encoding: Set by user. * - decoding: Set by libavcodec. */ enum SampleFormat sample_fmt; ///< sample format /* The following data should not be initialized. */ /** * Samples per packet, initialized when calling 'init'. */ int frame_size; int frame_number; ///< audio or video frame number #if LIBAVCODEC_VERSION_MAJOR < 53 int real_pict_num; ///< Returns the real picture number of previous encoded frame. #endif /** * Number of frames the decoded output will be delayed relative to * the encoded input. * - encoding: Set by libavcodec. * - decoding: unused */ int delay; /* - encoding parameters */ float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0) float qblur; ///< amount of qscale smoothing over time (0.0-1.0) /** * minimum quantizer * - encoding: Set by user. * - decoding: unused */ int qmin; /** * maximum quantizer * - encoding: Set by user. * - decoding: unused */ int qmax; /** * maximum quantizer difference between frames * - encoding: Set by user. * - decoding: unused */ int max_qdiff; /** * 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 */ int max_b_frames; /** * qscale factor between IP and B-frames * If > 0 then the last P-frame quantizer will be used (q= lastp_q*factor+offset). * If < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset). * - encoding: Set by user. * - decoding: unused */ float b_quant_factor; /** obsolete FIXME remove */ int rc_strategy; #define FF_RC_STRATEGY_XVID 1 int b_frame_strategy; /** * 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. */ int hurry_up; struct AVCodec *codec; void *priv_data; int rtp_payload_size; /* The size of the RTP payload: the coder will */ /* do its 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 transmitted RTP payload. */ /* The RTP callback: This function is called */ /* every time the encoder has a packet to send. */ /* It 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. */ void (*rtp_callback)(struct AVCodecContext *avctx, void *data, int size, int mb_nb); /* statistics, used for 2-pass encoding */ int mv_bits; int header_bits; int i_tex_bits; int p_tex_bits; int i_count; int p_count; int skip_count; int misc_bits; /** * number of bits used for the previously encoded frame * - encoding: Set by libavcodec. * - decoding: unused */ int frame_bits; /** * Private data of the user, can be used to carry app specific stuff. * - encoding: Set by user. * - decoding: Set by user. */ struct TlibavcodecExt *opaque; char codec_name[32]; enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */ enum CodecID codec_id; /* 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. */ unsigned int codec_tag; /** * Work around bugs in encoders which sometimes cannot be detected automatically. * - encoding: Set by user * - decoding: Set by user */ int workaround_bugs; #define FF_BUG_AUTODETECT 1 ///< autodetection #define FF_BUG_OLD_MSMPEG4 2 #define FF_BUG_XVID_ILACE 4 #define FF_BUG_UMP4 8 #define FF_BUG_NO_PADDING 16 #define FF_BUG_AMV 32 #define FF_BUG_AC_VLC 0 ///< Will be removed, libavcodec can now handle these non-compliant files by default. #define FF_BUG_QPEL_CHROMA 64 #define FF_BUG_STD_QPEL 128 #define FF_BUG_QPEL_CHROMA2 256 #define FF_BUG_DIRECT_BLOCKSIZE 512 #define FF_BUG_EDGE 1024 #define FF_BUG_HPEL_CHROMA 2048 #define FF_BUG_DC_CLIP 4096 #define FF_BUG_MS 8192 ///< Work around various bugs in Microsoft's broken decoders. #define FF_BUG_TRUNCATED 16384 //#define FF_BUG_FAKE_SCALABILITY 16 //Autodetection should work 100%. /** * luma single coefficient elimination threshold * - encoding: Set by user. * - decoding: unused */ int luma_elim_threshold; /** * chroma single coeff elimination threshold * - encoding: Set by user. * - decoding: unused */ int chroma_elim_threshold; /** * strictly follow the standard (MPEG4, ...). * - encoding: Set by user. * - decoding: Set by user. * Setting this to STRICT or higher means the encoder and decoder will * generally do stupid things, whereas setting it to unofficial or lower * will mean the encoder might produce output that is not supported by all * spec-compliant decoders. Decoders don't differentiate between normal, * unofficial and experimental (that is, they always try to decode things * when they can) unless they are explicitly asked to behave stupidly * (=strictly conform to the specs) */ int strict_std_compliance; #define FF_COMPLIANCE_VERY_STRICT 2 ///< Strictly conform to an older more strict version of the spec or reference software. #define FF_COMPLIANCE_STRICT 1 ///< Strictly conform to all the things in the spec no matter what consequences. #define FF_COMPLIANCE_NORMAL 0 #if LIBAVCODEC_VERSION_MAJOR < 53 #define FF_COMPLIANCE_INOFFICIAL -1 ///< Allow inofficial extensions (deprecated - use FF_COMPLIANCE_UNOFFICIAL instead). #endif #define FF_COMPLIANCE_UNOFFICIAL -1 ///< Allow unofficial extensions #define FF_COMPLIANCE_EXPERIMENTAL -2 ///< Allow nonstandardized experimental things. /** * qscale offset between IP and B-frames * - encoding: Set by user. * - decoding: unused */ float b_quant_offset; /** * Error recognization; higher values will detect more errors but may * misdetect some more or less valid parts as errors. * - encoding: unused * - decoding: Set by user. */ int error_recognition; #define FF_ER_CAREFUL 1 #define FF_ER_COMPLIANT 2 #define FF_ER_AGGRESSIVE 3 #define FF_ER_VERY_AGGRESSIVE 4 /** * Called at the beginning of each frame to get a buffer for it. * If pic.reference is set then the frame will be read later by libavcodec. * avcodec_align_dimensions2() should be used to find the required width and * height, as they normally need to be rounded up to the next multiple of 16. * if CODEC_CAP_DR1 is not set then get_buffer() must call * avcodec_default_get_buffer() instead of providing buffers allocated by * some other means. * - encoding: unused * - decoding: Set by libavcodec, user can override. */ int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic); /** * Called to release buffers which were allocated with get_buffer. * A released buffer can be reused in get_buffer(). * pic.data[*] must be set to NULL. * - encoding: unused * - decoding: Set by libavcodec, user can override. */ void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic); /** * Size of the frame reordering buffer in the decoder. * For MPEG-2 it is 1 IPB or 0 low delay IP. * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. */ int has_b_frames; /** * number of bytes per packet if constant and known or 0 * Used by some WAV based audio codecs. */ int block_align; int parse_only; /* - 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 */ int mpeg_quant; /** * pass1 encoding statistics output buffer * - encoding: Set by libavcodec. * - decoding: unused */ char *stats_out; /** * pass2 encoding statistics input buffer * Concatenated stuff from stats_out of pass1 should be placed here. * - encoding: Allocated/set/freed by user. * - decoding: unused */ char *stats_in; /** * 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 */ float rc_qsquish; float rc_qmod_amp; int rc_qmod_freq; /** * ratecontrol override, see RcOverride * - encoding: Allocated/set/freed by user. * - decoding: unused */ RcOverride *rc_override; int rc_override_count; /** * rate control equation * - encoding: Set by user * - decoding: unused */ const char *rc_eq; /** * maximum bitrate * - encoding: Set by user. * - decoding: unused */ int rc_max_rate; /** * minimum bitrate * - encoding: Set by user. * - decoding: unused */ int rc_min_rate; /** * decoder bitstream buffer size * - encoding: Set by user. * - decoding: unused */ int rc_buffer_size; float rc_buffer_aggressivity; /** * 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 */ float i_quant_factor; /** * qscale offset between P and I-frames * - encoding: Set by user. * - decoding: unused */ float i_quant_offset; /** * initial complexity for pass1 ratecontrol * - encoding: Set by user. * - decoding: unused */ float rc_initial_cplx; /** * DCT algorithm, see FF_DCT_* below * - encoding: Set by user. * - decoding: unused */ int dct_algo; #define FF_DCT_AUTO 0 #define FF_DCT_FASTINT 1 #define FF_DCT_INT 2 #define FF_DCT_MMX 3 #define FF_DCT_MLIB 4 #define FF_DCT_ALTIVEC 5 #define FF_DCT_FAAN 6 /** * luminance masking (0-> disabled) * - encoding: Set by user. * - decoding: unused */ float lumi_masking; /** * temporary complexity masking (0-> disabled) * - encoding: Set by user. * - decoding: unused */ float temporal_cplx_masking; /** * spatial complexity masking (0-> disabled) * - encoding: Set by user. * - decoding: unused */ float spatial_cplx_masking; /** * p block masking (0-> disabled) * - encoding: Set by user. * - decoding: unused */ float p_masking; /** * darkness masking (0-> disabled) * - encoding: Set by user. * - decoding: unused */ float dark_masking; /** * IDCT algorithm, see FF_IDCT_* below. * - encoding: Set by user. * - decoding: Set by user. */ int idct_algo; /* * idct_algo is set by ffdshow.ax. * It uses the list "idctNames[]" found in Tlibavcodec.cpp. * The indexes of the items in that list should match with the values below. */ #define FF_IDCT_AUTO 0 #define FF_IDCT_LIBMPEG2MMX 1 #define FF_IDCT_SIMPLEMMX 2 #define FF_IDCT_XVIDMMX 3 #define FF_IDCT_SIMPLE 4 #define FF_IDCT_INT 5 #define FF_IDCT_FAAN 6 #define FF_IDCT_H264 7 #define FF_IDCT_VP3 8 #define FF_IDCT_CAVS 9 #define FF_IDCT_WMV2 10 /** * slice count * - encoding: Set by libavcodec. * - decoding: Set by user (or 0). */ int slice_count; /** * slice offsets in the frame in bytes * - encoding: Set/allocated by libavcodec. * - decoding: Set/allocated by user (or NULL). */ int *slice_offset; /** * error concealment flags * - encoding: unused * - decoding: Set by user. */ int error_concealment; #define FF_EC_GUESS_MVS 1 #define FF_EC_DEBLOCK 2 /** * 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.) */ unsigned dsp_mask; #if FF_API_MM_FLAGS #define FF_MM_FORCE AV_CPU_FLAG_FORCE #define FF_MM_MMX AV_CPU_FLAG_MMX #define FF_MM_3DNOW AV_CPU_FLAG_3DNOW #define FF_MM_MMXEXT AV_CPU_FLAG_MMX2 #define FF_MM_MMX2 AV_CPU_FLAG_MMX2 #define FF_MM_SSE AV_CPU_FLAG_SSE #define FF_MM_SSE2 AV_CPU_FLAG_SSE2 #define FF_MM_SSE2SLOW AV_CPU_FLAG_SSE2SLOW #define FF_MM_3DNOWEXT AV_CPU_FLAG_3DNOWEXT #define FF_MM_SSE3 AV_CPU_FLAG_SSE3 #define FF_MM_SSE3SLOW AV_CPU_FLAG_SSE3SLOW #define FF_MM_SSSE3 AV_CPU_FLAG_SSSE3 #define FF_MM_SSE4 AV_CPU_FLAG_SSE4 #define FF_MM_SSE42 AV_CPU_FLAG_SSE42 #define FF_MM_IWMMXT AV_CPU_FLAG_IWMMXT #define FF_MM_ALTIVEC AV_CPU_FLAG_ALTIVEC #endif /** * bits per sample/pixel from the demuxer (needed for huffyuv). * - encoding: Set by libavcodec. * - decoding: Set by user. */ int bits_per_coded_sample; /** * prediction method (needed for huffyuv) * - encoding: Set by user. * - decoding: unused */ int prediction_method; #define FF_PRED_LEFT 0 #define FF_PRED_PLANE 1 #define FF_PRED_MEDIAN 2 /** * sample aspect ratio (0 if unknown) * That is the width of a pixel divided by the height of the pixel. * Numerator and denominator must be relatively prime and smaller than 256 for some video standards. * - encoding: Set by user. * - decoding: Set by libavcodec. */ AVRational sample_aspect_ratio; /* ffdshow custom code * Regarding MPEG-2, currently there are two ways of encoding SAR. * Of course one is wrong. However, considerable number of videos are encoded in a wrong way. * We set the spec compliant value in sample_aspect_ratio and * wrong spec-value in sample_aspect_ratio2. */ AVRational sample_aspect_ratio2; /** * the picture in the bitstream * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. */ AVFrame *coded_frame; /** * debug * - encoding: Set by user. * - decoding: Set by user. */ int debug; #define FF_DEBUG_PICT_INFO 1 #define FF_DEBUG_RC 2 #define FF_DEBUG_BITSTREAM 4 #define FF_DEBUG_MB_TYPE 8 #define FF_DEBUG_QP 16 #define FF_DEBUG_MV 32 #define FF_DEBUG_DCT_COEFF 0x00000040 #define FF_DEBUG_SKIP 0x00000080 #define FF_DEBUG_STARTCODE 0x00000100 #define FF_DEBUG_PTS 0x00000200 #define FF_DEBUG_ER 0x00000400 #define FF_DEBUG_MMCO 0x00000800 #define FF_DEBUG_BUGS 0x00001000 #define FF_DEBUG_VIS_QP 0x00002000 #define FF_DEBUG_VIS_MB_TYPE 0x00004000 #define FF_DEBUG_BUFFERS 0x00008000 /** * debug * - encoding: Set by user. * - decoding: Set by user. */ int debug_mv; #define FF_DEBUG_VIS_MV_P_FOR 0x00000001 //visualize forward predicted MVs of P frames #define FF_DEBUG_VIS_MV_B_FOR 0x00000002 //visualize forward predicted MVs of B frames #define FF_DEBUG_VIS_MV_B_BACK 0x00000004 //visualize backward predicted MVs of B frames /** * error * - encoding: Set by libavcodec if flags&CODEC_FLAG_PSNR. * - decoding: unused */ uint64_t error[4]; /** * minimum MB quantizer * - encoding: unused * - decoding: unused */ int mb_qmin; /** * maximum MB quantizer * - encoding: unused * - decoding: unused */ int mb_qmax; /** * motion estimation comparison function * - encoding: Set by user. * - decoding: unused */ int me_cmp; /** * subpixel motion estimation comparison function * - encoding: Set by user. * - decoding: unused */ int me_sub_cmp; /** * macroblock comparison function (not supported yet) * - encoding: Set by user. * - decoding: unused */ int mb_cmp; /** * interlaced DCT comparison function * - encoding: Set by user. * - decoding: unused */ int ildct_cmp; #define FF_CMP_SAD 0 #define FF_CMP_SSE 1 #define FF_CMP_SATD 2 #define FF_CMP_DCT 3 #define FF_CMP_PSNR 4 #define FF_CMP_BIT 5 #define FF_CMP_RD 6 #define FF_CMP_ZERO 7 #define FF_CMP_VSAD 8 #define FF_CMP_VSSE 9 #define FF_CMP_NSSE 10 #define FF_CMP_W53 11 #define FF_CMP_W97 12 #define FF_CMP_DCTMAX 13 #define FF_CMP_DCT264 14 #define FF_CMP_CHROMA 256 /** * ME diamond size & shape * - encoding: Set by user. * - decoding: unused */ int dia_size; /** * amount of previous MV predictors (2a+1 x 2a+1 square) * - encoding: Set by user. * - decoding: unused */ int last_predictor_count; /** * prepass for motion estimation * - encoding: Set by user. * - decoding: unused */ int pre_me; /** * motion estimation prepass comparison function * - encoding: Set by user. * - decoding: unused */ int me_pre_cmp; /** * ME prepass diamond size & shape * - encoding: Set by user. * - decoding: unused */ int pre_dia_size; /** * subpel ME quality * - encoding: Set by user. * - decoding: unused */ int me_subpel_quality; /** * 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. */ enum PixelFormat (*get_format)(struct AVCodecContext *s, const enum PixelFormat * fmt); /** * 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. */ int dtg_active_format; #define FF_DTG_AFD_SAME 8 #define FF_DTG_AFD_4_3 9 #define FF_DTG_AFD_16_9 10 #define FF_DTG_AFD_14_9 11 #define FF_DTG_AFD_4_3_SP_14_9 13 #define FF_DTG_AFD_16_9_SP_14_9 14 #define FF_DTG_AFD_SP_4_3 15 /** * maximum motion estimation search range in subpel units * If 0 then no limit. * * - encoding: Set by user. * - decoding: unused */ int me_range; /** * intra quantizer bias * - encoding: Set by user. * - decoding: unused */ int intra_quant_bias; #define FF_DEFAULT_QUANT_BIAS 999999 /** * inter quantizer bias * - encoding: Set by user. * - decoding: unused */ int inter_quant_bias; /** * color table ID * - encoding: unused * - decoding: Which clrtable should be used for 8bit RGB images. * Tables have to be stored somewhere. FIXME */ int color_table_id; /** * internal_buffer count * Don't touch, used by libavcodec default_get_buffer(). */ int internal_buffer_count; /** * internal_buffers * Don't touch, used by libavcodec default_get_buffer(). */ void *internal_buffer; #define FF_LAMBDA_SHIFT 7 #define FF_LAMBDA_SCALE (1< ('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. */ unsigned int stream_codec_tag; /** * scene change detection threshold * 0 is default, larger means fewer detected scene changes. * - encoding: Set by user. * - decoding: unused */ int scenechange_threshold; /** * minimum Lagrange multipler * - encoding: Set by user. * - decoding: unused */ int lmin; /** * maximum Lagrange multipler * - encoding: Set by user. * - decoding: unused */ int lmax; #if FF_API_PALETTE_CONTROL /** * palette control structure * - encoding: ??? (no palette-enabled encoder yet) * - decoding: Set by user. */ struct AVPaletteControl *palctrl; #endif /** * noise reduction strength * - encoding: Set by user. * - decoding: unused */ int noise_reduction; /** * Called at the beginning of a frame to get cr buffer for it. * Buffer type (size, hints) must be the same. libavcodec won't check it. * libavcodec will pass previous buffer in pic, function should return * same buffer or new buffer with old frame "painted" into it. * If pic.data[0] == NULL must behave like get_buffer(). * if CODEC_CAP_DR1 is not set then reget_buffer() must call * avcodec_default_reget_buffer() instead of providing buffers allocated by * some other means. * - encoding: unused * - decoding: Set by libavcodec, user can override. */ int (*reget_buffer)(struct AVCodecContext *c, AVFrame *pic); /** * Number of bits which should be loaded into the rc buffer before decoding starts. * - encoding: Set by user. * - decoding: unused */ int rc_initial_buffer_occupancy; /** * * - encoding: Set by user. * - decoding: unused */ int inter_threshold; /** * CODEC_FLAG2_* * - encoding: Set by user. * - decoding: Set by user. */ int flags2; /** * Simulates errors in the bitstream to test error concealment. * - encoding: Set by user. * - decoding: unused */ int error_rate; /** * MP3 antialias algorithm, see FF_AA_* below. * - encoding: unused * - decoding: Set by user. */ int antialias_algo; #define FF_AA_AUTO 0 #define FF_AA_FASTINT 1 //not implemented yet #define FF_AA_INT 2 #define FF_AA_FLOAT 3 /** * quantizer noise shaping * - encoding: Set by user. * - decoding: unused */ int quantizer_noise_shaping; /** * thread count * is used to decide how many independent tasks should be passed to execute() * - encoding: Set by user. * - decoding: Set by user. */ int thread_count; /** * 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. */ int (*execute)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size); /** * thread opaque * Can be used by execute() to store some per AVCodecContext stuff. * - encoding: set by execute() * - decoding: set by execute() */ void *thread_opaque; /** * 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 */ int me_threshold; /** * Macroblock threshold below which the user specified macroblock types will be used. * - encoding: Set by user. * - decoding: unused */ int mb_threshold; /** * precision of the intra DC coefficient - 8 * - encoding: Set by user. * - decoding: unused */ int intra_dc_precision; /** * noise vs. sse weight for the nsse comparsion function * - encoding: Set by user. * - decoding: unused */ int nsse_weight; /** * Number of macroblock rows at the top which are skipped. * - encoding: unused * - decoding: Set by user. */ int skip_top; /** * Number of macroblock rows at the bottom which are skipped. * - encoding: unused * - decoding: Set by user. */ int skip_bottom; /** * profile * - encoding: Set by user. * - decoding: Set by libavcodec. */ int profile; #define FF_PROFILE_UNKNOWN -99 #define FF_PROFILE_AAC_MAIN 0 #define FF_PROFILE_AAC_LOW 1 #define FF_PROFILE_AAC_SSR 2 #define FF_PROFILE_AAC_LTP 3 #define FF_PROFILE_H264_BASELINE 66 #define FF_PROFILE_H264_MAIN 77 #define FF_PROFILE_H264_EXTENDED 88 #define FF_PROFILE_H264_HIGH 100 #define FF_PROFILE_H264_HIGH_10 110 #define FF_PROFILE_H264_HIGH_422 122 #define FF_PROFILE_H264_HIGH_444 244 #define FF_PROFILE_H264_CAVLC_444 44 /** * level * - encoding: Set by user. * - decoding: Set by libavcodec. */ int level; #define FF_LEVEL_UNKNOWN -99 /** * low resolution decoding, 1-> 1/2 size, 2->1/4 size * - encoding: unused * - decoding: Set by user. */ int lowres; /** * 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. */ int coded_width, coded_height; /** * frame skip threshold * - encoding: Set by user. * - decoding: unused */ int frame_skip_threshold; /** * frame skip factor * - encoding: Set by user. * - decoding: unused */ int frame_skip_factor; /** * frame skip exponent * - encoding: Set by user. * - decoding: unused */ int frame_skip_exp; /** * frame skip comparison function * - encoding: Set by user. * - decoding: unused */ int frame_skip_cmp; /** * Border processing masking, raises the quantizer for mbs on the borders * of the picture. * - encoding: Set by user. * - decoding: unused */ float border_masking; /** * minimum MB lagrange multipler * - encoding: Set by user. * - decoding: unused */ int mb_lmin; /** * maximum MB lagrange multipler * - encoding: Set by user. * - decoding: unused */ int mb_lmax; /** * * - encoding: Set by user. * - decoding: unused */ int me_penalty_compensation; /** * * - encoding: unused * - decoding: Set by user. */ enum AVDiscard skip_loop_filter; /** * * - encoding: unused * - decoding: Set by user. */ enum AVDiscard skip_idct; /** * * - encoding: unused * - decoding: Set by user. */ enum AVDiscard skip_frame; /** * * - encoding: Set by user. * - decoding: unused */ int bidir_refine; /** * * - encoding: Set by user. * - decoding: unused */ int brd_scale; /** * constant rate factor - quality-based VBR - values ~correspond to qps * - encoding: Set by user. * - decoding: unused */ float crf; /** * constant quantization parameter rate control method * - encoding: Set by user. * - decoding: unused */ int cqp; /** * minimum GOP size * - encoding: Set by user. * - decoding: unused */ int keyint_min; /** * number of reference frames * - encoding: Set by user. * - decoding: Set by lavc. */ int refs; /** * chroma qp offset from luma * - encoding: Set by user. * - decoding: unused */ int chromaoffset; /** * Influences how often B-frames are used. * - encoding: Set by user. * - decoding: unused */ int bframebias; /** * trellis RD quantization * - encoding: Set by user. * - decoding: unused */ int trellis; /** * Reduce fluctuations in qp (before curve compression). * - encoding: Set by user. * - decoding: unused */ float complexityblur; /** * in-loop deblocking filter alphac0 parameter * alpha is in the range -6...6 * - encoding: Set by user. * - decoding: unused */ int deblockalpha; /** * in-loop deblocking filter beta parameter * beta is in the range -6...6 * - encoding: Set by user. * - decoding: unused */ int deblockbeta; /** * macroblock subpartition sizes to consider - p8x8, p4x4, b8x8, i8x8, i4x4 * - encoding: Set by user. * - decoding: unused */ int partitions; #define X264_PART_I4X4 0x001 /* Analyze i4x4 */ #define X264_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ #define X264_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ #define X264_PART_P4X4 0x020 /* Analyze p8x4, p4x8, p4x4 */ #define X264_PART_B8X8 0x100 /* Analyze b16x8, b8x16 and b8x8 */ /** * direct MV prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto) * - encoding: Set by user. * - decoding: unused */ int directpred; /** * Audio cutoff bandwidth (0 means "automatic") * - encoding: Set by user. * - decoding: unused */ int cutoff; /** * Multiplied by qscale for each frame and added to scene_change_score. * - encoding: Set by user. * - decoding: unused */ int scenechange_factor; /** * * Note: Value depends upon the compare function used for fullpel ME. * - encoding: Set by user. * - decoding: unused */ int mv0_threshold; /** * Adjusts sensitivity of b_frame_strategy 1. * - encoding: Set by user. * - decoding: unused */ int b_sensitivity; /** * - encoding: Set by user. * - decoding: unused */ int compression_level; #define FF_COMPRESSION_DEFAULT -1 #if LIBAVCODEC_VERSION_MAJOR < 53 /** * Sets whether to use LPC mode - used by FLAC encoder. * - encoding: Set by user. * - decoding: unused * @deprecated Deprecated in favor of lpc_type and lpc_passes. */ int use_lpc; #endif /** * LPC coefficient precision - used by FLAC encoder * - encoding: Set by user. * - decoding: unused */ int lpc_coeff_precision; /** * - encoding: Set by user. * - decoding: unused */ int min_prediction_order; /** * - encoding: Set by user. * - decoding: unused */ int max_prediction_order; /** * search method for selecting prediction order * - encoding: Set by user. * - decoding: unused */ int prediction_order_method; /** * - encoding: Set by user. * - decoding: unused */ int min_partition_order; /** * - encoding: Set by user. * - decoding: unused */ int max_partition_order; /** * GOP timecode frame start number, in non drop frame format * - encoding: Set by user. * - decoding: unused */ int64_t timecode_frame_start; #if LIBAVCODEC_VERSION_MAJOR < 53 /** * Decoder should decode to this many channels if it can (0 for default) * - encoding: unused * - decoding: Set by user. * @deprecated Deprecated in favor of request_channel_layout. */ int request_channels; #endif /** * 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. */ float drc_scale; /** * opaque 64bit number (generally a PTS) that will be reordered and * output in AVFrame.reordered_opaque * - encoding: unused * - decoding: Set by user. */ int64_t reordered_opaque; int64_t reordered_opaque2; /* ffdshow custom code */ int64_t reordered_opaque3; /* ffdshow custom code */ /** * Bits per sample/pixel of internal libavcodec pixel/sample format. * This field is applicable only when sample_fmt is SAMPLE_FMT_S32. * - encoding: set by user. * - decoding: set by libavcodec. */ int bits_per_raw_sample; /** * Audio channel layout. * - encoding: set by user. * - decoding: set by libavcodec. */ int64_t channel_layout; /** * Request decoder to use this channel layout if it can (0 for default) * - encoding: unused * - decoding: Set by user. */ int64_t request_channel_layout; /** * Ratecontrol attempt to use, at maximum, of what can be used without an underflow. * - encoding: Set by user. * - decoding: unused. */ float rc_max_available_vbv_use; /** * Ratecontrol attempt to use, at least, times the amount needed to prevent a vbv overflow. * - encoding: Set by user. * - decoding: unused. */ float rc_min_vbv_overflow_use; /** * For some codecs, the time base is closer to the field rate than the frame rate. * Most notably, H.264 and MPEG-2 specify time_base as half of frame duration * if no telecine is used ... * * Set to time_base ticks per frame. Default 1, e.g., H.264/MPEG-2 set it to 2. */ int ticks_per_frame; /** * Chromaticity coordinates of the source primaries. * - encoding: Set by user * - decoding: Set by libavcodec */ enum AVColorPrimaries color_primaries; /** * Color Transfer Characteristic. * - encoding: Set by user * - decoding: Set by libavcodec */ enum AVColorTransferCharacteristic color_trc; /** * YUV colorspace type. * - encoding: Set by user * - decoding: Set by libavcodec */ enum AVColorSpace colorspace; /** * MPEG vs JPEG YUV range. * - encoding: Set by user * - decoding: Set by libavcodec */ enum AVColorRange color_range; /** * This defines the location of chroma samples. * - encoding: Set by user * - decoding: Set by libavcodec */ enum AVChromaLocation chroma_sample_location; /** * The codec may call this to execute several independent things. * It will return only after finishing all tasks. * The user may replace this with some multithreaded implementation, * the default implementation will execute the parts serially. * Also see avcodec_thread_init and e.g. the --enable-pthread configure option. * @param c context passed also to func * @param count the number of things to execute * @param arg2 argument passed unchanged to func * @param ret return values of executed functions, must have space for "count" values. May be NULL. * @param func function that will be called count times, with jobnr from 0 to count-1. * threadnr will be in the range 0 to c->thread_count-1 < MAX_THREADS and so that no * two instances of func executing at the same time will have the same threadnr. * @return always 0 currently, but code should handle a future improvement where when any call to func * returns < 0 no further calls to func may be done and < 0 is returned. * - encoding: Set by libavcodec, user can override. * - decoding: Set by libavcodec, user can override. */ int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count); /** * explicit P-frame weighted prediction analysis method * 0: off * 1: fast blind weighting (one reference duplicate with -1 offset) * 2: smart weighting (full fade detection analysis) * - encoding: Set by user. * - decoding: unused */ int weighted_p_pred; /** * AQ mode * 0: Disabled * 1: Variance AQ (complexity mask) * 2: Auto-variance AQ (experimental) * - encoding: Set by user * - decoding: unused */ int aq_mode; /** * AQ strength * Reduces blocking and blurring in flat and textured areas. * - encoding: Set by user * - decoding: unused */ float aq_strength; /** * PSY RD * Strength of psychovisual optimization * - encoding: Set by user * - decoding: unused */ float psy_rd; /** * PSY trellis * Strength of psychovisual optimization * - encoding: Set by user * - decoding: unused */ float psy_trellis; /** * RC lookahead * Number of frames for frametype and ratecontrol lookahead * - encoding: Set by user * - decoding: unused */ int rc_lookahead; /** * Constant rate factor maximum * With CRF encoding mode and VBV restrictions enabled, prevents quality from being worse * than crf_max, even if doing so would violate VBV restrictions. * - encoding: Set by user. * - decoding: unused */ float crf_max; int log_level_offset; /** * Determines which LPC analysis algorithm to use. * - encoding: Set by user * - decoding: unused */ enum AVLPCType lpc_type; /** * Number of passes to use for Cholesky factorization during LPC analysis * - encoding: Set by user * - decoding: unused */ int lpc_passes; /** * Whether this is a copy of the context which had init() called on it. * This is used by multithreading - shared tables and picture pointers * should be freed from the original context only. * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. */ int is_copy; /** * Which multithreading methods to use. * Use of FF_THREAD_FRAME will increase decoding delay by one frame per thread, * so clients which require strictly conforming DTS must not use it. * * - encoding: Set by user, otherwise the default is used. * - decoding: Set by user, otherwise the default is used. */ int thread_type; #define FF_THREAD_FRAME 1 //< Decode more than one frame at once #define FF_THREAD_SLICE 2 //< Decode more than one part of a single frame at once /** * Which multithreading methods are actually active at the moment. * - encoding: Set by libavcodec. * - decoding: Set by libavcodec. */ int active_thread_type; /* ffdshow custom stuff (begin) */ /** * minimum and maxminum quantizer for I frames. If 0, derived from qmin, i_quant_factor, i_quant_offset * - encoding: set by user. * - decoding: unused */ int qmin_i,qmax_i; /** * minimum and maximum quantizer for B frames. If 0, derived from qmin, b_quant_factor, b_quant_offset * - encoding: set by user. * - decoding: unused */ int qmin_b,qmax_b; float postgain; int ac3mode,ac3lfe; int ac3channels[6]; int nal_length_size; int vorbis_header_size[3]; int64_t granulepos; int64_t *parserRtStart; void (*handle_user_data)(struct AVCodecContext *c,const uint8_t *buf,int buf_size); int h264_has_to_drop_first_non_ref; // Workaround Haali's media splitter (http://forum.doom9.org/showthread.php?p=1226434#post1226434) /** * Force 4:3 or 16:9 as DAR (MPEG-2 only) * - encoding: unused. * - decoding: Set by user. */ int isDVD; int got_first_frame; /* ffmpeg-mt */ /* ffdshow custom stuff (end) */ } AVCodecContext; /** * AVHWAccel. */ typedef struct AVHWAccel { /** * Name of the hardware accelerated codec. * The name is globally unique among encoders and among decoders (but an * encoder and a decoder can share the same name). */ const char *name; /** * Type of codec implemented by the hardware accelerator. * * See CODEC_TYPE_xxx */ enum CodecType type; /** * Codec implemented by the hardware accelerator. * * See CODEC_ID_xxx */ enum CodecID id; /** * Supported pixel format. * * Only hardware accelerated formats are supported here. */ enum PixelFormat pix_fmt; /** * Hardware accelerated codec capabilities. * see FF_HWACCEL_CODEC_CAP_* */ int capabilities; struct AVHWAccel *next; /** * Called at the beginning of each frame or field picture. * * Meaningful frame information (codec specific) is guaranteed to * be parsed at this point. This function is mandatory. * * Note that buf can be NULL along with buf_size set to 0. * Otherwise, this means the whole frame is available at this point. * * @param avctx the codec context * @param buf the frame data buffer base * @param buf_size the size of the frame in bytes * @return zero if successful, a negative value otherwise */ int (*start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); /** * Callback for each slice. * * Meaningful slice information (codec specific) is guaranteed to * be parsed at this point. This function is mandatory. * * @param avctx the codec context * @param buf the slice data buffer base * @param buf_size the size of the slice in bytes * @return zero if successful, a negative value otherwise */ int (*decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size); /** * Called at the end of each frame or field picture. * * The whole picture is parsed at this point and can now be sent * to the hardware accelerator. This function is mandatory. * * @param avctx the codec context * @return zero if successful, a negative value otherwise */ int (*end_frame)(AVCodecContext *avctx); /** * Size of HW accelerator private data. * * Private data is allocated with av_mallocz() before * AVCodecContext.get_buffer() and deallocated after * AVCodecContext.release_buffer(). */ int priv_data_size; } AVHWAccel; /** * AVCodec. */ typedef struct AVCodec { /** * Name of the codec implementation. * The name is globally unique among encoders and among decoders (but an * encoder and a decoder can share the same name). * This is the primary way to find a codec from the user perspective. */ const char *name; enum AVMediaType type; enum CodecID id; int priv_data_size; int (*init)(AVCodecContext *); int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data); int (*close)(AVCodecContext *); int (*decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt); /** * Codec capabilities. * see CODEC_CAP_* */ int capabilities; struct AVCodec *next; /** * Flush buffers. * Will be called when seeking */ void (*flush)(AVCodecContext *); const AVRational *supported_framerates; ///< array of supported framerates, or NULL if any, array is terminated by {0,0} const enum PixelFormat *pix_fmts; ///< array of supported pixel formats, or NULL if unknown, array is terminated by -1 /** * Descriptive name for the codec, meant to be more human readable than name. * You should use the NULL_IF_CONFIG_SMALL() macro to define it. */ const char *long_name; const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 const enum SampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 const int64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 uint8_t max_lowres; ///< maximum value for lowres supported by the decoder /* ffmpeg-mt */ int (*init_thread_copy)(AVCodecContext *); int (*update_thread_context)(AVCodecContext *dst, AVCodecContext *src); } AVCodec; /** * four components are given, that's all. * the last component is alpha */ typedef struct AVPicture { uint8_t *data[4]; int linesize[4]; ///< number of bytes per line } AVPicture; void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift); const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt); void avcodec_set_dimensions(AVCodecContext *s, int width, int height); /* external high level API */ /** * If c is NULL, returns the first registered codec, * if c is non-NULL, returns the next registered codec after c, * or NULL if c is the last one. */ AVCodec *av_codec_next(AVCodec *c); /** * Return the LIBAVCODEC_VERSION_INT constant. */ unsigned avcodec_version(void); /** * Initialize libavcodec. * * @warning This function must be called before any other libavcodec * function. */ FF_EXPORT void avcodec_init(void); /** * Register the codec codec and initialize libavcodec. * * @see avcodec_init() */ void avcodec_register(AVCodec *codec); /** * Find a registered encoder with a matching codec ID. * * @param id CodecID of the requested encoder * @return An encoder if one was found, NULL otherwise. */ AVCodec *avcodec_find_encoder(enum CodecID id); /** * Find a registered encoder with the specified name. * * @param name name of the requested encoder * @return An encoder if one was found, NULL otherwise. */ AVCodec *avcodec_find_encoder_by_name(const char *name); /** * Find a registered decoder with a matching codec ID. * * @param id CodecID of the requested decoder * @return A decoder if one was found, NULL otherwise. */ FF_EXPORT AVCodec *avcodec_find_decoder(enum CodecID id); /** * Find a registered decoder with the specified name. * * @param name name of the requested decoder * @return A decoder if one was found, NULL otherwise. */ AVCodec *avcodec_find_decoder_by_name(const char *name); void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode); /** * Set the fields of the given AVCodecContext to default values. * * @param s The AVCodecContext of which the fields should be set to default values. */ void avcodec_get_context_defaults(AVCodecContext *s); /** * Allocate an AVCodecContext and set 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 */ FF_EXPORT AVCodecContext *avcodec_alloc_context(void); /** * Set the fields of the given AVFrame to default values. * * @param pic The AVFrame of which the fields should be set to default values. */ void avcodec_get_frame_defaults(AVFrame *pic); /** * Allocate an AVFrame and set its fields to default values. The resulting * struct can be deallocated by simply calling av_free(). * * @return An AVFrame filled with default values or NULL on failure. * @see avcodec_get_frame_defaults */ FF_EXPORT AVFrame *avcodec_alloc_frame(void); FF_EXPORT int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic); FF_EXPORT void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic); FF_EXPORT int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic); /** * Return the amount of padding in pixels which the get_buffer callback must * provide around the edge of the image for codecs which do not have the * CODEC_FLAG_EMU_EDGE flag. * * @return Required padding in pixels. */ unsigned avcodec_get_edge_width(void); /** * Modify width and height values so that they will result in a memory * buffer that is acceptable for the codec if you do not use any horizontal * padding. * * May only be used if a codec with CODEC_CAP_DR1 has been opened. * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased * according to avcodec_get_edge_width() before. */ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height); /** * Modify width and height values so that they will result in a memory * buffer that is acceptable for the codec if you also ensure that all * line sizes are a multiple of the respective linesize_align[i]. * * May only be used if a codec with CODEC_CAP_DR1 has been opened. * If CODEC_FLAG_EMU_EDGE is not set, the dimensions must have been increased * according to avcodec_get_edge_width() before. */ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]); #if LIBAVCODEC_VERSION_MAJOR < 53 /** * @deprecated Deprecated in favor of av_check_image_size(). */ attribute_deprecated int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h); #endif enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt); FF_EXPORT int avcodec_thread_init(AVCodecContext *s, int thread_count); FF_EXPORT void avcodec_thread_free(AVCodecContext *s); int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size); int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count); const char* avcodec_get_current_idct(AVCodecContext *avctx); void avcodec_get_encoder_info(AVCodecContext *avctx,int *xvid_build,int *divx_version,int *divx_build,int *lavc_build); //FIXME func typedef /** * Initialize the AVCodecContext to use the given AVCodec. Prior to using this * function the context has to be allocated. * * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(), * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for * retrieving a codec. * * @warning This function is not thread safe! * * @code * avcodec_register_all(); * codec = avcodec_find_decoder(CODEC_ID_H264); * if (!codec) * exit(1); * * context = avcodec_alloc_context(); * * if (avcodec_open(context, codec) < 0) * exit(1); * @endcode * * @param avctx The context which will be set up to use the given codec. * @param codec The codec to use within the context. * @return zero on success, a negative value on error * @see avcodec_alloc_context, avcodec_find_decoder, avcodec_find_encoder */ FF_EXPORT int avcodec_open(AVCodecContext *avctx, AVCodec *codec); #if LIBAVCODEC_VERSION_MAJOR < 53 /** * Decode an audio frame from buf into samples. * Wrapper function which calls avcodec_decode_audio3. * * @deprecated Use avcodec_decode_audio3 instead. * @param avctx the codec context * @param[out] samples the output buffer * @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. */ FF_EXPORT int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, const uint8_t *buf, int buf_size); #endif /** * Decode the audio frame of size avpkt->size from avpkt->data into samples. * Some decoders may support multiple frames in a single AVPacket, such * decoders would then just decode the first frame. In this case, * avcodec_decode_audio3 has to be called again with an AVPacket that contains * the remaining data in order to decode the second frame etc. * If no frame * could be outputted, frame_size_ptr is zero. Otherwise, it is the * decompressed frame size in bytes. * * @warning You must set frame_size_ptr to the allocated size of the * output buffer before calling avcodec_decode_audio3(). * * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than * the actual read bytes because some optimized bitstream readers read 32 or 64 * bits at once and could read over the end. * * @warning The end of the input buffer avpkt->data should be set to 0 to ensure that * no overreading happens for damaged MPEG streams. * * @note You might have to align the input buffer avpkt->data and output buffer * samples. The alignment requirements depend on the CPU: On some CPUs it isn't * necessary at all, on others it won't work at all if not aligned and on others * it will work but it will have an impact on performance. * * In practice, avpkt->data should have 4 byte alignment at minimum and * samples should be 16 byte aligned unless the CPU doesn't need it * (AltiVec and SSE do). * * @param avctx the codec context * @param[out] samples the output buffer, sample type in avctx->sample_fmt * @param[in,out] frame_size_ptr the output buffer size in bytes * @param[in] avpkt The input AVPacket containing the input buffer. * You can create such packet with av_init_packet() and by then setting * data and size, some decoders might in addition need other fields. * All decoders are designed to use the least fields possible though. * @return On error a negative value is returned, otherwise the number of bytes * used or zero if no frame data was decompressed (used) from the input AVPacket. */ int avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, AVPacket *avpkt); #if LIBAVCODEC_VERSION_MAJOR < 53 /** * Decode a video frame from buf into picture. * Wrapper function which calls avcodec_decode_video2. * * @deprecated Use avcodec_decode_video2 instead. * @param avctx the codec context * @param[out] picture The AVFrame in which the decoded video frame will be stored. * @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. */ FF_EXPORT int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const uint8_t *buf, int buf_size); #endif /** * Decode the video frame of size avpkt->size from avpkt->data into picture. * Some decoders may support multiple frames in a single AVPacket, such * decoders would then just decode the first frame. * * @warning The input buffer must be FF_INPUT_BUFFER_PADDING_SIZE larger than * the actual read bytes because some optimized bitstream readers read 32 or 64 * bits at once and could read over the end. * * @warning The end of the input buffer buf should be set to 0 to ensure that * no overreading happens for damaged MPEG streams. * * @note You might have to align the input buffer avpkt->data. * The alignment requirements depend on the CPU: on some CPUs it isn't * necessary at all, on others it won't work at all if not aligned and on others * it will work but it will have an impact on performance. * * In practice, avpkt->data should have 4 byte alignment at minimum. * * @note Some codecs have a delay between input and output, these need to be * fed with avpkt->data=NULL, avpkt->size=0 at the end to return the remaining frames. * * @param avctx the codec context * @param[out] picture The AVFrame in which the decoded video frame will be stored. * Use avcodec_alloc_frame to get an AVFrame, the codec will * allocate memory for the actual bitmap. * with default get/release_buffer(), the decoder frees/reuses the bitmap as it sees fit. * with overridden get/release_buffer() (needs CODEC_CAP_DR1) the user decides into what buffer the decoder * decodes and the decoder tells the user once it does not need the data anymore, * the user app can at this point free/reuse/keep the memory as it sees fit. * * @param[in] avpkt The input AVpacket containing the input buffer. * You can create such packet with av_init_packet() and by then setting * data and size, some decoders might in addition need other fields like * flags&AV_PKT_FLAG_KEY. All decoders are designed to use the least * fields possible. * @param[in,out] got_picture_ptr Zero if no frame could be decompressed, otherwise, it is nonzero. * @return On error a negative value is returned, otherwise the number of bytes * used or zero if no frame could be decompressed. */ int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt); int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, int *data_size_ptr, uint8_t *buf, int buf_size); /** * Encode an audio frame from samples into buf. * * @note The output buffer should be at least FF_MIN_BUFFER_SIZE bytes large. * However, for PCM audio the user will know how much space is needed * because it depends on the value passed in buf_size as described * below. In that case a lower value can be used. * * @param avctx the codec context * @param[out] buf the output buffer * @param[in] buf_size the output buffer size * @param[in] samples the input buffer containing the samples * The number of samples read from this buffer is frame_size*channels, * both of which are defined in avctx. * For PCM audio the number of samples read from samples is equal to * buf_size * input_sample_size / output_sample_size. * @return On error a negative value is returned, on success zero or the number * of bytes used to encode the data read from the input buffer. */ int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, const short *samples); /** * Encode a video frame from pict into buf. * The input picture should be * stored using a specific format, namely avctx.pix_fmt. * * @param avctx the codec context * @param[out] buf the output buffer for the bitstream of encoded frame * @param[in] buf_size the size of the output buffer in bytes * @param[in] pict the input picture to encode * @return On error a negative value is returned, on success zero or the number * of bytes used from the output buffer. */ int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVFrame *pict); FF_EXPORT int avcodec_close(AVCodecContext *avctx); /** * Register all the codecs, parsers and bitstream filters which were enabled at * configuration time. If you do not call this function you can select exactly * which formats you want to support, by using the individual registration * functions. * * @see avcodec_register * @see av_register_codec_parser * @see av_register_bitstream_filter */ FF_EXPORT void avcodec_register_all(void); /** * Flush buffers, should be called when seeking or when switching to a different stream. */ FF_EXPORT void avcodec_flush_buffers(AVCodecContext *avctx); void avcodec_default_free_buffers(AVCodecContext *s); /* misc useful functions */ /** * Return a single letter to describe the given picture type pict_type. * * @param[in] pict_type the picture type * @return A single character representing the picture type. */ char av_get_pict_type_char(int pict_type); /** * Return codec bits per sample. * * @param[in] codec_id the codec * @return Number of bits per sample or zero if unknown for the given codec. */ int av_get_bits_per_sample(enum CodecID codec_id); /** * Return 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. */ int av_get_bits_per_sample_format(enum SampleFormat sample_fmt); /* frame parsing */ typedef struct AVCodecParserContext { void *priv_data; struct AVCodecParser *parser; int64_t frame_offset; /* offset of the current frame */ int64_t cur_offset; /* current offset (incremented by each av_parser_parse()) */ int64_t next_frame_offset; /* offset of the next frame */ /* video info */ int pict_type; /* XXX: Put it back in AVCodecContext. */ /** * This field is used for proper frame duration computation in lavf. * It signals, how much longer the frame duration of the current frame * is compared to normal frame duration. * * frame_duration = (2 + repeat_pict) / (2*fps) * * It is used by codecs like H.264 to display telecined material. * * @note This field can also be set to -1 for half-frame duration in case * of field pictures. */ int repeat_pict; /* XXX: Put it back in AVCodecContext. */ int64_t pts; /* pts of the current frame */ int64_t dts; /* dts of the current frame */ /* private data */ int64_t last_pts; int64_t last_dts; int fetch_timestamp; #define AV_PARSER_PTS_NB 4 int cur_frame_start_index; int64_t cur_frame_offset[AV_PARSER_PTS_NB]; int64_t cur_frame_pts[AV_PARSER_PTS_NB]; int64_t cur_frame_dts[AV_PARSER_PTS_NB]; int flags; #define PARSER_FLAG_COMPLETE_FRAMES 0x0001 #define PARSER_FLAG_ONCE 0x0002 int64_t offset; ///< byte offset from starting packet start int64_t cur_frame_end[AV_PARSER_PTS_NB]; /*! * Set by parser to 1 for key frames and 0 for non-key frames. * It is initialized to -1, so if the parser doesn't set this flag, * old-style fallback using FF_I_TYPE picture type as key frames * will be used. */ int key_frame; /** * Time difference in stream time base units from the pts of this * packet to the point at which the output from the decoder has converged * independent from the availability of previous frames. That is, the * frames are virtually identical no matter if decoding started from * the very first frame or from this keyframe. * Is AV_NOPTS_VALUE if unknown. * This field is not the display duration of the current frame. * This field has no meaning if the packet does not have AV_PKT_FLAG_KEY * set. * * The purpose of this field is to allow seeking in streams that have no * keyframes in the conventional sense. It corresponds to the * recovery point SEI in H.264 and match_time_delta in NUT. It is also * essential for some types of subtitle streams to ensure that all * subtitles are correctly displayed after seeking. */ int64_t convergence_duration; // Timestamp generation support: /** * Synchronization point for start of timestamp generation. * * Set to >0 for sync point, 0 for no sync point and <0 for undefined * (default). * * For example, this corresponds to presence of H.264 buffering period * SEI message. */ int dts_sync_point; /** * Offset of the current timestamp against last timestamp sync point in * units of AVCodecContext.time_base. * * Set to INT_MIN when dts_sync_point unused. Otherwise, it must * contain a valid timestamp offset. * * Note that the timestamp of sync point has usually a nonzero * dts_ref_dts_delta, which refers to the previous sync point. Offset of * the next frame after timestamp sync point will be usually 1. * * For example, this corresponds to H.264 cpb_removal_delay. */ int dts_ref_dts_delta; /** * Presentation delay of current frame in units of AVCodecContext.time_base. * * Set to INT_MIN when dts_sync_point unused. Otherwise, it must * contain valid non-negative timestamp delta (presentation time of a frame * must not lie in the past). * * This delay represents the difference between decoding and presentation * time of the frame. * * For example, this corresponds to H.264 dpb_output_delay. */ int pts_dts_delta; /** * Position of the packet in file. * * Analogous to cur_frame_pts/dts */ int64_t cur_frame_pos[AV_PARSER_PTS_NB]; /** * Byte position of currently parsed frame in stream. */ int64_t pos; /** * Previous frame byte position. */ int64_t last_pos; } AVCodecParserContext; typedef struct AVCodecParser { int codec_ids[5]; /* several codec IDs are permitted */ int priv_data_size; int (*parser_init)(AVCodecParserContext *s); int (*parser_parse)(AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size); void (*parser_close)(AVCodecParserContext *s); int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size); struct AVCodecParser *next; } AVCodecParser; AVCodecParser *av_parser_next(AVCodecParser *c); void av_register_codec_parser(AVCodecParser *parser); FF_EXPORT AVCodecParserContext *av_parser_init(int codec_id); #if LIBAVCODEC_VERSION_MAJOR < 53 attribute_deprecated int av_parser_parse(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int64_t pts, int64_t dts); #endif /** * Parse a packet. * * @param s parser context. * @param avctx codec context. * @param poutbuf set to pointer to parsed buffer or NULL if not yet finished. * @param poutbuf_size set to size of parsed buffer or zero if not yet finished. * @param buf input buffer. * @param buf_size input length, to signal EOF, this should be 0 (so that the last frame can be output). * @param pts input presentation timestamp. * @param dts input decoding timestamp. * @param pos input byte position in stream. * @return the number of bytes of the input bitstream used. * * Example: * @code * while(in_len){ * len = av_parser_parse2(myparser, AVCodecContext, &data, &size, * in_data, in_len, * pts, dts, pos); * in_data += len; * in_len -= len; * * if(size) * decode_frame(data, size); * } * @endcode */ int av_parser_parse2(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int64_t pts, int64_t dts, int64_t pos); int av_parser_change(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int keyframe); FF_EXPORT void av_parser_close(AVCodecParserContext *s); /* memory */ FF_EXPORT void av_free(void *ptr); /** * Reallocate the given block if it is not large enough, otherwise do nothing. * * @see av_realloc */ void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size); /** * Allocate a buffer, reusing the given one if large enough. * * Contrary to av_fast_realloc the current buffer contents might not be * preserved and on error the old buffer is freed, thus no special * handling to avoid memleaks is necessary. * * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer * @param size size of the buffer *ptr points to * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and * *size 0 if an error occurred. */ void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size); /* 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 * */ attribute_deprecated void av_free_static(void); /** * Copy image data in src_data to dst_data. * * @param dst_linesize linesizes for the image in dst_data * @param src_linesize linesizes for the image in src_data */ void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4], uint8_t *src_data[4], int src_linesize[4], enum PixelFormat pix_fmt, int width, int height); /** * Copy image src to dst. Wraps av_picture_data_copy() above. */ void av_picture_copy(AVPicture *dst, const AVPicture *src, enum PixelFormat pix_fmt, int width, int height); /** * Crop image top and left side. */ int av_picture_crop(AVPicture *dst, const AVPicture *src, enum PixelFormat pix_fmt, int top_band, int left_band); /** * Pad image. */ int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright, int *color); /** * Encode extradata length to a buffer. Used by xiph codecs. * * @param s buffer to write to; must be at least (v/255+1) bytes long * @param v size of extradata in bytes * @return number of bytes written to the buffer. */ unsigned int av_xiphlacing(unsigned char *s, unsigned int v); /** * Logs a generic warning message about a missing feature. This function is * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) * only, and would normally not be used by applications. * @param[in] avc a pointer to an arbitrary struct of which the first field is * a pointer to an AVClass struct * @param[in] feature string containing the name of the missing feature * @param[in] want_sample indicates if samples are wanted which exhibit this feature. * If want_sample is non-zero, additional verbage will be added to the log * message which tells the user how to report samples to the development * mailing list. */ void av_log_missing_feature(void *avc, const char *feature, int want_sample); /** * Log a generic warning message asking for a sample. This function is * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.) * only, and would normally not be used by applications. * @param[in] avc a pointer to an arbitrary struct of which the first field is * a pointer to an AVClass struct * @param[in] msg string containing an optional message, or NULL if no message */ void av_log_ask_for_sample(void *avc, const char *msg); /** * Lock operation used by lockmgr */ enum AVLockOp { AV_LOCK_CREATE, ///< Create a mutex AV_LOCK_OBTAIN, ///< Lock the mutex AV_LOCK_RELEASE, ///< Unlock the mutex AV_LOCK_DESTROY, ///< Free mutex resources }; /** * Register a user provided lock manager supporting the operations * specified by AVLockOp. mutex points to a (void *) where the * lockmgr should store/get a pointer to a user allocated mutex. It's * NULL upon AV_LOCK_CREATE and != NULL for all other ops. * * @param cb User defined callback. Note: FFmpeg may invoke calls to this * callback during the call to av_lockmgr_register(). * Thus, the application must be prepared to handle that. * If cb is set to NULL the lockmgr will be unregistered. * Also note that during unregistration the previously registered * lockmgr callback may also be invoked. */ int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)); /** * ffdshow custom stuff * * @param[out] recovery_frame_cnt. Valid only if GDR. * @return 0: no recovery point, 1:I-frame 2:Recovery Point SEI (GDR), 3:IDR, -1:error */ int avcodec_h264_search_recovery_point(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int *recovery_frame_cnt); /* Media Player Classic - Homecinema specific functions */ FF_EXPORT int FFGetChannelMap(struct AVCodecContext* avctx); FF_EXPORT void* FF_aligned_malloc(size_t size, size_t alignment); FF_EXPORT void FF_aligned_free(void* mem_ptr); #endif /* AVCODEC_AVCODEC_H */