diff options
Diffstat (limited to 'libavcodec/avcodec.h')
| -rw-r--r-- | libavcodec/avcodec.h | 1054 |
1 files changed, 887 insertions, 167 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 9b386551c9..a5faff5da3 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -1,20 +1,20 @@ /* * copyright (c) 2001 Fabrice Bellard * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -33,6 +33,7 @@ #include "libavutil/avutil.h" #include "libavutil/buffer.h" #include "libavutil/cpu.h" +#include "libavutil/channel_layout.h" #include "libavutil/dict.h" #include "libavutil/frame.h" #include "libavutil/log.h" @@ -41,11 +42,6 @@ #include "version.h" -#if FF_API_FAST_MALLOC -// to provide fast_*alloc -#include "libavutil/mem.h" -#endif - /** * @defgroup libavc Encoding/Decoding Library * @{ @@ -97,7 +93,7 @@ * * If you add a codec ID to this list, add it so that * 1. no value of a existing codec ID changes (that would break ABI), - * 2. it is as close as possible to similar codecs. + * 2. it is as close as possible to similar codecs * * After adding new codec IDs, do not forget to add an entry to the codec * descriptor list and bump libavcodec minor version. @@ -283,6 +279,7 @@ enum AVCodecID { AV_CODEC_ID_WEBP, AV_CODEC_ID_HNM4_VIDEO, AV_CODEC_ID_HEVC, +#define AV_CODEC_ID_H265 AV_CODEC_ID_HEVC AV_CODEC_ID_FIC, AV_CODEC_ID_ALIAS_PIX, AV_CODEC_ID_BRENDER_PIX, @@ -300,6 +297,22 @@ enum AVCodecID { AV_CODEC_ID_DDS, AV_CODEC_ID_DXV, + AV_CODEC_ID_Y41P = 0x8000, + AV_CODEC_ID_AVRP, + AV_CODEC_ID_012V, + AV_CODEC_ID_AVUI, + AV_CODEC_ID_AYUV, + AV_CODEC_ID_TARGA_Y216, + AV_CODEC_ID_V308, + AV_CODEC_ID_V408, + AV_CODEC_ID_YUV4, + AV_CODEC_ID_AVRN, + AV_CODEC_ID_CPIA, + AV_CODEC_ID_XFACE, + AV_CODEC_ID_SNOW, + AV_CODEC_ID_SMVJPEG, + AV_CODEC_ID_APNG, + /* various PCM "codecs" */ AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs AV_CODEC_ID_PCM_S16LE = 0x10000, @@ -333,6 +346,9 @@ enum AVCodecID { AV_CODEC_ID_PCM_S24LE_PLANAR, AV_CODEC_ID_PCM_S32LE_PLANAR, AV_CODEC_ID_PCM_S16BE_PLANAR, + /* new PCM "codecs" should be added right below this line starting with + * an explicit value of for example 0x10800 + */ /* various ADPCM codecs */ AV_CODEC_ID_ADPCM_IMA_QT = 0x11000, @@ -366,6 +382,16 @@ enum AVCodecID { AV_CODEC_ID_ADPCM_G722, AV_CODEC_ID_ADPCM_IMA_APC, AV_CODEC_ID_ADPCM_VIMA, +#if FF_API_VIMA_DECODER + AV_CODEC_ID_VIMA = AV_CODEC_ID_ADPCM_VIMA, +#endif + + AV_CODEC_ID_ADPCM_AFC = 0x11800, + AV_CODEC_ID_ADPCM_IMA_OKI, + AV_CODEC_ID_ADPCM_DTK, + AV_CODEC_ID_ADPCM_IMA_RAD, + AV_CODEC_ID_ADPCM_G726LE, + AV_CODEC_ID_ADPCM_THP_LE, /* AMR */ AV_CODEC_ID_AMR_NB = 0x12000, @@ -453,6 +479,17 @@ enum AVCodecID { AV_CODEC_ID_ON2AVC, AV_CODEC_ID_DSS_SP, + AV_CODEC_ID_FFWAVESYNTH = 0x15800, + AV_CODEC_ID_SONIC, + AV_CODEC_ID_SONIC_LS, + AV_CODEC_ID_EVRC, + AV_CODEC_ID_SMV, + AV_CODEC_ID_DSD_LSBF, + AV_CODEC_ID_DSD_MSBF, + AV_CODEC_ID_DSD_LSBF_PLANAR, + AV_CODEC_ID_DSD_MSBF_PLANAR, + AV_CODEC_ID_4GV, + /* subtitle codecs */ AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs. AV_CODEC_ID_DVD_SUBTITLE = 0x17000, @@ -465,10 +502,36 @@ enum AVCodecID { AV_CODEC_ID_DVB_TELETEXT, AV_CODEC_ID_SRT, + AV_CODEC_ID_MICRODVD = 0x17800, + AV_CODEC_ID_EIA_608, + AV_CODEC_ID_JACOSUB, + AV_CODEC_ID_SAMI, + AV_CODEC_ID_REALTEXT, + AV_CODEC_ID_STL, + AV_CODEC_ID_SUBVIEWER1, + AV_CODEC_ID_SUBVIEWER, + AV_CODEC_ID_SUBRIP, + AV_CODEC_ID_WEBVTT, + AV_CODEC_ID_MPL2, + AV_CODEC_ID_VPLAYER, + AV_CODEC_ID_PJS, + AV_CODEC_ID_ASS, + AV_CODEC_ID_HDMV_TEXT_SUBTITLE, + /* other specific kind of codecs (generally used for attachments) */ AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs. AV_CODEC_ID_TTF = 0x18000, + AV_CODEC_ID_BINTEXT = 0x18800, + AV_CODEC_ID_XBIN, + AV_CODEC_ID_IDF, + AV_CODEC_ID_OTF, + AV_CODEC_ID_SMPTE_KLV, + AV_CODEC_ID_DVD_NAV, + AV_CODEC_ID_TIMED_ID3, + AV_CODEC_ID_BIN_DATA, + + AV_CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it AV_CODEC_ID_MPEG2TS = 0x20000, /**< _FAKE_ codec to indicate a raw MPEG-2 TS @@ -500,6 +563,13 @@ typedef struct AVCodecDescriptor { * Codec properties, a combination of AV_CODEC_PROP_* flags. */ int props; + + /** + * MIME type(s) associated with the codec. + * May be NULL; if not, a NULL-terminated array of MIME types. + * The first item is always non-NULL and is the preferred MIME type. + */ + const char *const *mime_types; } AVCodecDescriptor; /** @@ -527,6 +597,16 @@ typedef struct AVCodecDescriptor { * equal. */ #define AV_CODEC_PROP_REORDER (1 << 3) +/** + * Subtitle codec is bitmap based + * Decoded AVSubtitle data can be read from the AVSubtitleRect->pict field. + */ +#define AV_CODEC_PROP_BITMAP_SUB (1 << 16) +/** + * Subtitle codec is text based. + * Decoded AVSubtitle data can be read from the AVSubtitleRect->ass field. + */ +#define AV_CODEC_PROP_TEXT_SUB (1 << 17) /** * @ingroup lavc_decoding @@ -536,7 +616,7 @@ typedef struct AVCodecDescriptor { * Note: If the first 23 bits of the additional bytes are not 0, then damaged * MPEG bitstreams could cause overread and segfault. */ -#define AV_INPUT_BUFFER_PADDING_SIZE 8 +#define AV_INPUT_BUFFER_PADDING_SIZE 32 /** * @ingroup lavc_encoding @@ -549,7 +629,7 @@ typedef struct AVCodecDescriptor { /** * @deprecated use AV_INPUT_BUFFER_PADDING_SIZE instead */ -#define FF_INPUT_BUFFER_PADDING_SIZE 8 +#define FF_INPUT_BUFFER_PADDING_SIZE 32 /** * @deprecated use AV_INPUT_BUFFER_MIN_SIZE instead @@ -573,6 +653,7 @@ enum Motion_Est_ID { ME_HEX, ///< hexagon based search ME_UMH, ///< uneven multi-hexagon search ME_TESA, ///< transformed exhaustive search algorithm + ME_ITER=50, ///< iterative search }; #endif @@ -586,6 +667,7 @@ enum AVDiscard{ 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_NONINTRA= 24, ///< discard all non intra frames AVDISCARD_NONKEY = 32, ///< discard all frames except keyframes AVDISCARD_ALL = 48, ///< discard all }; @@ -699,7 +781,7 @@ typedef struct RcOverride{ /** * Allow non spec compliant speedup tricks. */ -#define AV_CODEC_FLAG_CLOSED_GOP (1 << 31) +#define AV_CODEC_FLAG_CLOSED_GOP (1U << 31) #define AV_CODEC_FLAG2_FAST (1 << 0) /** @@ -710,6 +792,12 @@ typedef struct RcOverride{ * Place global headers at every keyframe instead of in extradata. */ #define AV_CODEC_FLAG2_LOCAL_HEADER (1 << 3) + +/** + * timecode is in drop frame format. DEPRECATED!!!! + */ +#define AV_CODEC_FLAG2_DROP_FRAME_TIMECODE (1 << 13) + /** * Input bitstream might be truncated at a packet boundaries * instead of only at frame boundaries. @@ -720,6 +808,19 @@ typedef struct RcOverride{ */ #define AV_CODEC_FLAG2_IGNORE_CROP (1 << 16) +/** + * Show all frames before the first keyframe + */ +#define AV_CODEC_FLAG2_SHOW_ALL (1 << 22) +/** + * Export motion vectors through frame side data + */ +#define AV_CODEC_FLAG2_EXPORT_MVS (1 << 28) +/** + * Do not skip samples and export skip information as frame side data + */ +#define AV_CODEC_FLAG2_SKIP_MANUAL (1 << 29) + /* Unsupported options : * Syntax Arithmetic coding (SAC) * Reference Picture Selection @@ -767,6 +868,14 @@ typedef struct RcOverride{ * This can be used to prevent truncation of the last audio samples. */ #define AV_CODEC_CAP_SMALL_LAST_FRAME (1 << 6) + +#if FF_API_CAP_VDPAU +/** + * Codec can export data for HW decoding (VDPAU). + */ +#define AV_CODEC_CAP_HWACCEL_VDPAU (1 << 7) +#endif + /** * Codec can output multiple frames per AVPacket * Normally demuxers return one frame at a time, demuxers which do not do @@ -808,17 +917,26 @@ typedef struct RcOverride{ * Audio encoder supports receiving a different number of samples in each call. */ #define AV_CODEC_CAP_VARIABLE_FRAME_SIZE (1 << 16) +/** + * Codec is intra only. + */ +#define AV_CODEC_CAP_INTRA_ONLY 0x40000000 +/** + * Codec is lossless. + */ +#define AV_CODEC_CAP_LOSSLESS 0x80000000 + #if FF_API_WITHOUT_PREFIX /** * Allow decoders to produce frames with data planes that are not aligned * to CPU requirements (e.g. due to cropping). */ -#define CODEC_FLAG_UNALIGNED 0x0001 -#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_OUTPUT_CORRUPT 0x0008 ///< Output even those frames that might be corrupted -#define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC. +#define CODEC_FLAG_UNALIGNED AV_CODEC_FLAG_UNALIGNED +#define CODEC_FLAG_QSCALE AV_CODEC_FLAG_QSCALE +#define CODEC_FLAG_4MV AV_CODEC_FLAG_4MV +#define CODEC_FLAG_OUTPUT_CORRUPT AV_CODEC_FLAG_OUTPUT_CORRUPT +#define CODEC_FLAG_QPEL AV_CODEC_FLAG_QPEL #if FF_API_GMC /** * @deprecated use the "gmc" private option of the libxvid encoder @@ -839,9 +957,9 @@ typedef struct RcOverride{ */ #define CODEC_FLAG_INPUT_PRESERVED 0x0100 #endif -#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_GRAY 0x2000 ///< Only decode/encode grayscale. +#define CODEC_FLAG_PASS1 AV_CODEC_FLAG_PASS1 +#define CODEC_FLAG_PASS2 AV_CODEC_FLAG_PASS2 +#define CODEC_FLAG_GRAY AV_CODEC_FLAG_GRAY #if FF_API_EMU_EDGE /** * @deprecated edges are not used/required anymore. I.e. this flag is now always @@ -849,9 +967,9 @@ typedef struct RcOverride{ */ #define CODEC_FLAG_EMU_EDGE 0x4000 #endif -#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_PSNR AV_CODEC_FLAG_PSNR +#define CODEC_FLAG_TRUNCATED AV_CODEC_FLAG_TRUNCATED + #if FF_API_NORMALIZE_AQP /** * @deprecated use the flag "naq" in the "mpv_flags" private option of the @@ -859,21 +977,24 @@ typedef struct RcOverride{ */ #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 #endif -#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT. -#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay. -#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_LOOP_FILTER 0x00000800 ///< loop filter -#define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation -#define CODEC_FLAG_CLOSED_GOP 0x80000000 -#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks. -#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_IGNORE_CROP 0x00010000 ///< Discard cropping information from SPS. - -#define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. +#define CODEC_FLAG_INTERLACED_DCT AV_CODEC_FLAG_INTERLACED_DCT +#define CODEC_FLAG_LOW_DELAY AV_CODEC_FLAG_LOW_DELAY +#define CODEC_FLAG_GLOBAL_HEADER AV_CODEC_FLAG_GLOBAL_HEADER +#define CODEC_FLAG_BITEXACT AV_CODEC_FLAG_BITEXACT +#define CODEC_FLAG_AC_PRED AV_CODEC_FLAG_AC_PRED +#define CODEC_FLAG_LOOP_FILTER AV_CODEC_FLAG_LOOP_FILTER +#define CODEC_FLAG_INTERLACED_ME AV_CODEC_FLAG_INTERLACED_ME +#define CODEC_FLAG_CLOSED_GOP AV_CODEC_FLAG_CLOSED_GOP +#define CODEC_FLAG2_FAST AV_CODEC_FLAG2_FAST +#define CODEC_FLAG2_NO_OUTPUT AV_CODEC_FLAG2_NO_OUTPUT +#define CODEC_FLAG2_LOCAL_HEADER AV_CODEC_FLAG2_LOCAL_HEADER +#define CODEC_FLAG2_DROP_FRAME_TIMECODE AV_CODEC_FLAG2_DROP_FRAME_TIMECODE +#define CODEC_FLAG2_IGNORE_CROP AV_CODEC_FLAG2_IGNORE_CROP + +#define CODEC_FLAG2_CHUNKS AV_CODEC_FLAG2_CHUNKS +#define CODEC_FLAG2_SHOW_ALL AV_CODEC_FLAG2_SHOW_ALL +#define CODEC_FLAG2_EXPORT_MVS AV_CODEC_FLAG2_EXPORT_MVS +#define CODEC_FLAG2_SKIP_MANUAL AV_CODEC_FLAG2_SKIP_MANUAL /* Unsupported options : * Syntax Arithmetic coding (SAC) @@ -882,16 +1003,22 @@ typedef struct RcOverride{ /* /Fx */ /* codec capabilities */ -#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< Decoder can use draw_horiz_band callback. +#define CODEC_CAP_DRAW_HORIZ_BAND AV_CODEC_CAP_DRAW_HORIZ_BAND ///< 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 -#define CODEC_CAP_TRUNCATED 0x0008 +#define CODEC_CAP_DR1 AV_CODEC_CAP_DR1 +#define CODEC_CAP_TRUNCATED AV_CODEC_CAP_TRUNCATED #if FF_API_XVMC -/* Codec can export data for HW decoding (XvMC). */ +/* Codec can export data for HW decoding. This flag indicates that + * the codec would call get_format() with list that might contain HW accelerated + * pixel formats (XvMC, VDPAU, VAAPI, etc). The application can pick any of them + * including raw image format. + * The application can use the passed context to determine bitstream version, + * chroma format, resolution etc. + */ #define CODEC_CAP_HWACCEL 0x0010 #endif /* FF_API_XVMC */ /** @@ -917,17 +1044,17 @@ typedef struct RcOverride{ * each output packet. If this flag is not set, the pts and duration will * be determined by libavcodec from the input frame. */ -#define CODEC_CAP_DELAY 0x0020 +#define CODEC_CAP_DELAY AV_CODEC_CAP_DELAY /** * 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 +#define CODEC_CAP_SMALL_LAST_FRAME AV_CODEC_CAP_SMALL_LAST_FRAME #if FF_API_CAP_VDPAU /** * Codec can export data for HW decoding (VDPAU). */ -#define CODEC_CAP_HWACCEL_VDPAU 0x0080 +#define CODEC_CAP_HWACCEL_VDPAU AV_CODEC_CAP_HWACCEL_VDPAU #endif /** * Codec can output multiple frames per AVPacket @@ -940,16 +1067,16 @@ typedef struct RcOverride{ * prohibiting stream copy in many cases thus it should only be considered * as a last resort. */ -#define CODEC_CAP_SUBFRAMES 0x0100 +#define CODEC_CAP_SUBFRAMES AV_CODEC_CAP_SUBFRAMES /** * Codec is experimental and is thus avoided in favor of non experimental * encoders */ -#define CODEC_CAP_EXPERIMENTAL 0x0200 +#define CODEC_CAP_EXPERIMENTAL AV_CODEC_CAP_EXPERIMENTAL /** * Codec should fill in channel configuration and samplerate instead of container */ -#define CODEC_CAP_CHANNEL_CONF 0x0400 +#define CODEC_CAP_CHANNEL_CONF AV_CODEC_CAP_CHANNEL_CONF #if FF_API_NEG_LINESIZES /** * @deprecated no codecs use this capability @@ -959,23 +1086,37 @@ typedef struct RcOverride{ /** * Codec supports frame-level multithreading. */ -#define CODEC_CAP_FRAME_THREADS 0x1000 +#define CODEC_CAP_FRAME_THREADS AV_CODEC_CAP_FRAME_THREADS /** * Codec supports slice-based (or partition-based) multithreading. */ -#define CODEC_CAP_SLICE_THREADS 0x2000 +#define CODEC_CAP_SLICE_THREADS AV_CODEC_CAP_SLICE_THREADS /** * Codec supports changed parameters at any point. */ -#define CODEC_CAP_PARAM_CHANGE 0x4000 +#define CODEC_CAP_PARAM_CHANGE AV_CODEC_CAP_PARAM_CHANGE /** * Codec supports avctx->thread_count == 0 (auto). */ -#define CODEC_CAP_AUTO_THREADS 0x8000 +#define CODEC_CAP_AUTO_THREADS AV_CODEC_CAP_AUTO_THREADS /** * Audio encoder supports receiving a different number of samples in each call. */ -#define CODEC_CAP_VARIABLE_FRAME_SIZE 0x10000 +#define CODEC_CAP_VARIABLE_FRAME_SIZE AV_CODEC_CAP_VARIABLE_FRAME_SIZE +/** + * Codec is intra only. + */ +#define CODEC_CAP_INTRA_ONLY AV_CODEC_CAP_INTRA_ONLY +/** + * Codec is lossless. + */ +#define CODEC_CAP_LOSSLESS AV_CODEC_CAP_LOSSLESS + +/** + * HWAccel is experimental and is thus avoided in favor of non experimental + * codecs + */ +#define HWACCEL_CODEC_CAP_EXPERIMENTAL 0x0200 #endif /* FF_API_WITHOUT_PREFIX */ #if FF_API_MB_TYPE @@ -1121,13 +1262,84 @@ enum AVPacketSideDataType { AV_PKT_DATA_AUDIO_SERVICE_TYPE, /** - * This side data contains an integer value representing the quality - * factor of the compressed frame. Allowed range is between 1 (good) - * and FF_LAMBDA_MAX (bad). + * This side data contains quality related information from the encoder. + * @code + * u32le quality factor of the compressed frame. Allowed range is between 1 (good) and FF_LAMBDA_MAX (bad). + * u8 picture type + * u8 error count + * u16 reserved + * u64le[error count] sum of squared differences between encoder in and output + * @endcode + */ + AV_PKT_DATA_QUALITY_STATS, + + /** + * Recommmends skipping the specified number of samples + * @code + * u32le number of samples to skip from start of this packet + * u32le number of samples to skip from end of this packet + * u8 reason for start skip + * u8 reason for end skip (0=padding silence, 1=convergence) + * @endcode + */ + AV_PKT_DATA_SKIP_SAMPLES=70, + + /** + * An AV_PKT_DATA_JP_DUALMONO side data packet indicates that + * the packet may contain "dual mono" audio specific to Japanese DTV + * and if it is true, recommends only the selected channel to be used. + * @code + * u8 selected channels (0=mail/left, 1=sub/right, 2=both) + * @endcode + */ + AV_PKT_DATA_JP_DUALMONO, + + /** + * A list of zero terminated key/value strings. There is no end marker for + * the list, so it is required to rely on the side data size to stop. */ - AV_PKT_DATA_QUALITY_FACTOR, + AV_PKT_DATA_STRINGS_METADATA, + + /** + * Subtitle event position + * @code + * u32le x1 + * u32le y1 + * u32le x2 + * u32le y2 + * @endcode + */ + AV_PKT_DATA_SUBTITLE_POSITION, + + /** + * Data found in BlockAdditional element of matroska container. There is + * no end marker for the data, so it is required to rely on the side data + * size to recognize the end. 8 byte id (as found in BlockAddId) followed + * by data. + */ + AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, + + /** + * The optional first identifier line of a WebVTT cue. + */ + AV_PKT_DATA_WEBVTT_IDENTIFIER, + + /** + * The optional settings (rendering instructions) that immediately + * follow the timestamp specifier of a WebVTT cue. + */ + AV_PKT_DATA_WEBVTT_SETTINGS, + + /** + * A list of zero terminated key/value strings. There is no end marker for + * the list, so it is required to rely on the side data size to stop. This + * side data includes updated metadata which appeared in the stream. + */ + AV_PKT_DATA_METADATA_UPDATE, }; +#define AV_PKT_DATA_QUALITY_FACTOR AV_PKT_DATA_QUALITY_STATS //DEPRECATED + typedef struct AVPacketSideData { uint8_t *data; int size; @@ -1142,7 +1354,7 @@ typedef struct AVPacketSideData { * For video, it should typically contain one compressed frame. For audio it may * contain several compressed frames. * - * AVPacket is one of the few structs in Libav, whose size is a part of public + * AVPacket is one of the few structs in FFmpeg, whose size is a part of public * ABI. Thus it may be allocated on stack and no new fields can be added to it * without libavcodec and libavformat major bump. * @@ -1249,6 +1461,8 @@ enum AVFieldOrder { * New fields can be added to the end with minor version bumps. * Removal, reordering and changes to existing fields require a major * version bump. + * Please use AVOptions (av_opt* / av_set/get*()) to access these fields from user + * applications. * sizeof(AVCodecContext) must not be used outside libav*. */ typedef struct AVCodecContext { @@ -1313,7 +1527,8 @@ typedef struct AVCodecContext { /** * 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. + * - decoding: Set by user, may be overwritten by libavcodec + * if this info is available in the stream */ int bit_rate; @@ -1360,7 +1575,7 @@ typedef struct AVCodecContext { * rv10: additional flags * mpeg4: global headers (they can be in the bitstream or here) * The allocated memory should be AV_INPUT_BUFFER_PADDING_SIZE bytes larger - * than extradata_size to avoid prolems if it is read with the bitstream reader. + * than extradata_size to avoid problems 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. @@ -1373,6 +1588,8 @@ typedef struct AVCodecContext { * of which frame timestamps are represented. For fixed-fps content, * timebase should be 1/framerate and timestamp increments should be * identically 1. + * This often, but not always is the inverse of the frame rate or field rate + * for video. * - encoding: MUST be set by user. * - decoding: the use of this field for decoding is deprecated. * Use framerate instead. @@ -1391,6 +1608,11 @@ typedef struct AVCodecContext { /** * Codec delay. * + * Encoding: Number of frames delay there will be from the encoder input to + * the decoder output. (we assume the decoder matches the spec) + * Decoding: Number of frames delay in addition to what a standard decoder + * as specified in the spec would produce. + * * Video: * Number of frames the decoded output will be delayed relative to the * encoded input. @@ -1426,7 +1648,7 @@ typedef struct AVCodecContext { /** * Bitstream width / height, may be different from width/height e.g. when - * the decoded frame is cropped before being output. + * the decoded frame is cropped before being output or lowres is enabled. * * @note Those field may not match the value of the last * AVFrame outputted by avcodec_decode_video2 due frame @@ -1453,7 +1675,7 @@ typedef struct AVCodecContext { /** * Pixel format, see AV_PIX_FMT_xxx. * May be set by the demuxer if known from headers. - * May be overriden by the decoder if it knows better. + * May be overridden by the decoder if it knows better. * * @note This field may not match the value of the last * AVFrame outputted by avcodec_decode_video2 due frame @@ -1680,6 +1902,8 @@ typedef struct AVCodecContext { #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 @@ -1783,7 +2007,7 @@ typedef struct AVCodecContext { * XVideo Motion Acceleration * - encoding: forbidden * - decoding: set by decoder - * @deprecated XvMC support is slated for removal. + * @deprecated XvMC doesn't need it anymore. */ attribute_deprecated int xvmc_acceleration; #endif /* FF_API_XVMC */ @@ -1844,7 +2068,7 @@ typedef struct AVCodecContext { /** * precision of the intra DC coefficient - 8 * - encoding: Set by user. - * - decoding: unused + * - decoding: Set by libavcodec */ int intra_dc_precision; @@ -1996,7 +2220,7 @@ typedef struct AVCodecContext { /** Field order * - encoding: set by libavcodec - * - decoding: Set by libavcodec + * - decoding: Set by user. */ enum AVFieldOrder field_order; @@ -2050,7 +2274,7 @@ typedef struct AVCodecContext { /** * Audio channel layout. * - encoding: set by user. - * - decoding: set by libavcodec. + * - decoding: set by user, may be overwritten by libavcodec. */ uint64_t channel_layout; @@ -2069,9 +2293,10 @@ typedef struct AVCodecContext { enum AVAudioServiceType audio_service_type; /** - * Used to request a sample format from the decoder. - * - encoding: unused. + * desired sample format + * - encoding: Not used. * - decoding: Set by user. + * Decoder will decode to this format if it can. */ enum AVSampleFormat request_sample_fmt; @@ -2129,6 +2354,8 @@ typedef struct AVCodecContext { * 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. * + * Some decoders do not support linesizes changing between frames. + * * If frame multithreading is used and thread_safe_callbacks is set, * this callback may be called from a different thread, but not from more * than one at once. Does not need to be reentrant. @@ -2232,7 +2459,7 @@ typedef struct AVCodecContext { /** * maximum bitrate * - encoding: Set by user. - * - decoding: unused + * - decoding: Set by user, may be overwritten by libavcodec. */ int rc_max_rate; @@ -2358,9 +2585,9 @@ typedef struct AVCodecContext { int max_prediction_order; /** - * GOP timecode frame start number, in non drop frame format - * - encoding: Set by user. - * - decoding: unused + * GOP timecode frame start number + * - encoding: Set by user, in non drop frame format + * - decoding: Set by libavcodec (timecode in the 25 bits format, -1 if unset) */ int64_t timecode_frame_start; @@ -2465,6 +2692,7 @@ typedef struct AVCodecContext { int error_concealment; #define FF_EC_GUESS_MVS 1 #define FF_EC_DEBLOCK 2 +#define FF_EC_FAVOR_INTER 256 /** * debug @@ -2493,17 +2721,21 @@ typedef struct AVCodecContext { #define FF_DEBUG_MMCO 0x00000800 #define FF_DEBUG_BUGS 0x00001000 #if FF_API_DEBUG_MV -#define FF_DEBUG_VIS_QP 0x00002000 -#define FF_DEBUG_VIS_MB_TYPE 0x00004000 +#define FF_DEBUG_VIS_QP 0x00002000 ///< only access through AVOptions from outside libavcodec +#define FF_DEBUG_VIS_MB_TYPE 0x00004000 ///< only access through AVOptions from outside libavcodec #endif #define FF_DEBUG_BUFFERS 0x00008000 #define FF_DEBUG_THREADS 0x00010000 +#define FF_DEBUG_GREEN_MD 0x00800000 +#define FF_DEBUG_NOMC 0x01000000 #if FF_API_DEBUG_MV /** - * @deprecated this option does not have any effect + * debug + * Code outside libavcodec should access this field using AVOptions + * - encoding: Set by user. + * - decoding: Set by user. */ - attribute_deprecated 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 @@ -2524,9 +2756,15 @@ typedef struct AVCodecContext { * decoder returning an error. */ #define AV_EF_CRCCHECK (1<<0) -#define AV_EF_BITSTREAM (1<<1) -#define AV_EF_BUFFER (1<<2) -#define AV_EF_EXPLODE (1<<3) +#define AV_EF_BITSTREAM (1<<1) ///< detect bitstream specification deviations +#define AV_EF_BUFFER (1<<2) ///< detect improper bitstream length +#define AV_EF_EXPLODE (1<<3) ///< abort decoding on minor error detection + +#define AV_EF_IGNORE_ERR (1<<15) ///< ignore errors and continue +#define AV_EF_CAREFUL (1<<16) ///< consider things that violate the spec, are fast to calculate and have not been seen in the wild as errors +#define AV_EF_COMPLIANT (1<<17) ///< consider all spec non compliances as errors +#define AV_EF_AGGRESSIVE (1<<18) ///< consider things that a sane encoder should not do as an error + /** * opaque 64bit number (generally a PTS) that will be reordered and @@ -2547,8 +2785,8 @@ typedef struct AVCodecContext { * Hardware accelerator context. * For some hardware accelerators, a global context needs to be * provided by the user. In that case, this holds display-dependent - * data Libav cannot instantiate itself. Please refer to the - * Libav HW accelerator documentation to know how to fill this + * data FFmpeg cannot instantiate itself. Please refer to the + * FFmpeg HW accelerator documentation to know how to fill this * is. e.g. for VA API, this is a struct vaapi_context. * - encoding: unused * - decoding: Set by user @@ -2570,9 +2808,7 @@ typedef struct AVCodecContext { int dct_algo; #define FF_DCT_AUTO 0 #define FF_DCT_FASTINT 1 -#if FF_API_UNUSED_MEMBERS #define FF_DCT_INT 2 -#endif /* FF_API_UNUSED_MEMBERS */ #define FF_DCT_MMX 3 #define FF_DCT_ALTIVEC 5 #define FF_DCT_FAAN 6 @@ -2610,6 +2846,7 @@ typedef struct AVCodecContext { #if FF_API_ARCH_ALPHA #define FF_IDCT_SIMPLEALPHA 23 #endif +#define FF_IDCT_SIMPLEAUTO 128 /** * bits per sample/pixel from the demuxer (needed for huffyuv). @@ -2630,10 +2867,10 @@ typedef struct AVCodecContext { * low resolution decoding, 1-> 1/2 size, 2->1/4 size * - encoding: unused * - decoding: Set by user. - * - * @deprecated use decoder private options instead + * Code outside libavcodec should access this field using: + * av_codec_{get,set}_lowres(avctx) */ - attribute_deprecated int lowres; + int lowres; #endif #if FF_API_CODED_FRAME @@ -2716,7 +2953,7 @@ typedef struct AVCodecContext { int (*execute2)(struct AVCodecContext *c, int (*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count); /** - * noise vs. sse weight for the nsse comparsion function + * noise vs. sse weight for the nsse comparison function * - encoding: Set by user. * - decoding: unused */ @@ -2809,6 +3046,7 @@ typedef struct AVCodecContext { #define FF_PROFILE_HEVC_MAIN 1 #define FF_PROFILE_HEVC_MAIN_10 2 #define FF_PROFILE_HEVC_MAIN_STILL_PICTURE 3 +#define FF_PROFILE_HEVC_REXT 4 /** * level @@ -2819,21 +3057,21 @@ typedef struct AVCodecContext { #define FF_LEVEL_UNKNOWN -99 /** - * + * Skip loop filtering for selected frames. * - encoding: unused * - decoding: Set by user. */ enum AVDiscard skip_loop_filter; /** - * + * Skip IDCT/dequantization for selected frames. * - encoding: unused * - decoding: Set by user. */ enum AVDiscard skip_idct; /** - * + * Skip decoding for selected frames. * - encoding: unused * - decoding: Set by user. */ @@ -2899,7 +3137,7 @@ typedef struct AVCodecContext { */ int initial_padding; - /* + /** * - decoding: For codecs that store a framerate value in the compressed * bitstream, the decoder may export it here. { 0, 1} when * unknown. @@ -2913,8 +3151,153 @@ typedef struct AVCodecContext { * - decoding: Set by libavcodec before calling get_format() */ enum AVPixelFormat sw_pix_fmt; + + /** + * Timebase in which pkt_dts/pts and AVPacket.dts/pts are. + * Code outside libavcodec should access this field using: + * av_codec_{get,set}_pkt_timebase(avctx) + * - encoding unused. + * - decoding set by user. + */ + AVRational pkt_timebase; + + /** + * AVCodecDescriptor + * Code outside libavcodec should access this field using: + * av_codec_{get,set}_codec_descriptor(avctx) + * - encoding: unused. + * - decoding: set by libavcodec. + */ + const AVCodecDescriptor *codec_descriptor; + +#if !FF_API_LOWRES + /** + * low resolution decoding, 1-> 1/2 size, 2->1/4 size + * - encoding: unused + * - decoding: Set by user. + * Code outside libavcodec should access this field using: + * av_codec_{get,set}_lowres(avctx) + */ + int lowres; +#endif + + /** + * Current statistics for PTS correction. + * - decoding: maintained and used by libavcodec, not intended to be used by user apps + * - encoding: unused + */ + int64_t pts_correction_num_faulty_pts; /// Number of incorrect PTS values so far + int64_t pts_correction_num_faulty_dts; /// Number of incorrect DTS values so far + int64_t pts_correction_last_pts; /// PTS of the last frame + int64_t pts_correction_last_dts; /// DTS of the last frame + + /** + * Character encoding of the input subtitles file. + * - decoding: set by user + * - encoding: unused + */ + char *sub_charenc; + + /** + * Subtitles character encoding mode. Formats or codecs might be adjusting + * this setting (if they are doing the conversion themselves for instance). + * - decoding: set by libavcodec + * - encoding: unused + */ + int sub_charenc_mode; +#define FF_SUB_CHARENC_MODE_DO_NOTHING -1 ///< do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for instance) +#define FF_SUB_CHARENC_MODE_AUTOMATIC 0 ///< libavcodec will select the mode itself +#define FF_SUB_CHARENC_MODE_PRE_DECODER 1 ///< the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv + + /** + * Skip processing alpha if supported by codec. + * Note that if the format uses pre-multiplied alpha (common with VP6, + * and recommended due to better video quality/compression) + * the image will look as if alpha-blended onto a black background. + * However for formats that do not use pre-multiplied alpha + * there might be serious artefacts (though e.g. libswscale currently + * assumes pre-multiplied alpha anyway). + * Code outside libavcodec should access this field using AVOptions + * + * - decoding: set by user + * - encoding: unused + */ + int skip_alpha; + + /** + * Number of samples to skip after a discontinuity + * - decoding: unused + * - encoding: set by libavcodec + */ + int seek_preroll; + +#if !FF_API_DEBUG_MV + /** + * debug motion vectors + * Code outside libavcodec should access this field using AVOptions + * - 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 +#endif + + /** + * custom intra quantization matrix + * Code outside libavcodec should access this field using av_codec_g/set_chroma_intra_matrix() + * - encoding: Set by user, can be NULL. + * - decoding: unused. + */ + uint16_t *chroma_intra_matrix; + + /** + * dump format separator. + * can be ", " or "\n " or anything else + * Code outside libavcodec should access this field using AVOptions + * (NO direct access). + * - encoding: Set by user. + * - decoding: Set by user. + */ + uint8_t *dump_separator; + + /** + * ',' separated list of allowed decoders. + * If NULL then all are allowed + * - encoding: unused + * - decoding: set by user through AVOPtions (NO direct access) + */ + char *codec_whitelist; + + /* + * Properties of the stream that gets decoded + * To be accessed through av_codec_get_properties() (NO direct access) + * - encoding: unused + * - decoding: set by libavcodec + */ + unsigned properties; +#define FF_CODEC_PROPERTY_LOSSLESS 0x00000001 +#define FF_CODEC_PROPERTY_CLOSED_CAPTIONS 0x00000002 } AVCodecContext; +AVRational av_codec_get_pkt_timebase (const AVCodecContext *avctx); +void av_codec_set_pkt_timebase (AVCodecContext *avctx, AVRational val); + +const AVCodecDescriptor *av_codec_get_codec_descriptor(const AVCodecContext *avctx); +void av_codec_set_codec_descriptor(AVCodecContext *avctx, const AVCodecDescriptor *desc); + +unsigned av_codec_get_codec_properties(const AVCodecContext *avctx); + +int av_codec_get_lowres(const AVCodecContext *avctx); +void av_codec_set_lowres(AVCodecContext *avctx, int val); + +int av_codec_get_seek_preroll(const AVCodecContext *avctx); +void av_codec_set_seek_preroll(AVCodecContext *avctx, int val); + +uint16_t *av_codec_get_chroma_intra_matrix(const AVCodecContext *avctx); +void av_codec_set_chroma_intra_matrix(AVCodecContext *avctx, uint16_t *val); + /** * AVProfile. */ @@ -2955,9 +3338,7 @@ typedef struct AVCodec { const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0 const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1 const uint64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0 -#if FF_API_LOWRES - attribute_deprecated uint8_t max_lowres; ///< maximum value for lowres supported by the decoder -#endif + uint8_t max_lowres; ///< maximum value for lowres supported by the decoder, no direct access, use av_codec_get_max_lowres() const AVClass *priv_class; ///< AVClass for the private context const AVProfile *profiles; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN} @@ -3029,6 +3410,10 @@ typedef struct AVCodec { int caps_internal; } AVCodec; +int av_codec_get_max_lowres(const AVCodec *codec); + +struct MpegEncContext; + /** * @defgroup lavc_hwaccel AVHWAccel * @{ @@ -3064,7 +3449,7 @@ typedef struct AVHWAccel { /** * Hardware accelerated codec capabilities. - * see FF_HWACCEL_CODEC_CAP_* + * see HWACCEL_CODEC_CAP_* */ int capabilities; @@ -3103,6 +3488,7 @@ typedef struct AVHWAccel { * * Meaningful slice information (codec specific) is guaranteed to * be parsed at this point. This function is mandatory. + * The only exception is XvMC, that works on MB level. * * @param avctx the codec context * @param buf the slice data buffer base @@ -3132,6 +3518,17 @@ typedef struct AVHWAccel { int frame_priv_data_size; /** + * Called for every Macroblock in a slice. + * + * XvMC uses it to replace the ff_mpv_decode_mb(). + * Instead of decoding to raw picture, MB parameters are + * stored in an array provided by the video driver. + * + * @param s the mpeg context + */ + void (*decode_mb)(struct MpegEncContext *s); + + /** * Initialize the hwaccel private data. * * This will be called from ff_get_format(), after hwaccel and @@ -3159,6 +3556,9 @@ typedef struct AVHWAccel { * Hardware acceleration should be used for decoding even if the codec level * used is unknown or higher than the maximum supported level reported by the * hardware driver. + * + * It's generally a good idea to pass this flag unless you have a specific + * reason not to, as hardware tends to under-report supported levels. */ #define AV_HWACCEL_FLAG_IGNORE_LEVEL (1 << 0) @@ -3180,11 +3580,13 @@ typedef struct AVHWAccel { */ /** - * four components are given, that's all. - * the last component is alpha + * Picture data structure. + * + * Up to four components can be stored into it, the last component is + * alpha. */ typedef struct AVPicture { - uint8_t *data[AV_NUM_DATA_POINTERS]; + uint8_t *data[AV_NUM_DATA_POINTERS]; ///< pointers to the image data planes int linesize[AV_NUM_DATA_POINTERS]; ///< number of bytes per line } AVPicture; @@ -3192,9 +3594,6 @@ typedef struct AVPicture { * @} */ -#define AVPALETTE_SIZE 1024 -#define AVPALETTE_COUNT 256 - enum AVSubtitleType { SUBTITLE_NONE, @@ -3224,7 +3623,7 @@ typedef struct AVSubtitleRect { /** * data+linesize for the bitmap of this subtitle. - * can be set for text/ass as well once they where rendered + * can be set for text/ass as well once they are rendered */ AVPicture pict; enum AVSubtitleType type; @@ -3233,10 +3632,11 @@ typedef struct AVSubtitleRect { /** * 0 terminated ASS/SSA compatible event line. - * The pressentation of this is unaffected by the other values in this + * The presentation of this is unaffected by the other values in this * struct. */ char *ass; + int flags; } AVSubtitleRect; @@ -3335,13 +3735,29 @@ int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec); const AVClass *avcodec_get_class(void); /** + * Get the AVClass for AVFrame. It can be used in combination with + * AV_OPT_SEARCH_FAKE_OBJ for examining options. + * + * @see av_opt_find(). + */ +const AVClass *avcodec_get_frame_class(void); + +/** + * Get the AVClass for AVSubtitleRect. It can be used in combination with + * AV_OPT_SEARCH_FAKE_OBJ for examining options. + * + * @see av_opt_find(). + */ +const AVClass *avcodec_get_subtitle_rect_class(void); + +/** * Copy the settings of the source AVCodecContext into the destination * AVCodecContext. The resulting destination codec context will be * unopened, i.e. you are required to call avcodec_open2() before you * can use this AVCodecContext to decode/encode video/audio data. * * @param dest target codec context, should be initialized with - * avcodec_alloc_context3(), but otherwise uninitialized + * avcodec_alloc_context3(NULL), but otherwise uninitialized * @param src source codec context * @return AVERROR() on error (e.g. memory allocation error), 0 on success */ @@ -3473,6 +3889,20 @@ int av_packet_from_data(AVPacket *pkt, uint8_t *data, int size); int av_dup_packet(AVPacket *pkt); /** + * Copy packet, including contents + * + * @return 0 on success, negative AVERROR on fail + */ +int av_copy_packet(AVPacket *dst, const AVPacket *src); + +/** + * Copy packet side data + * + * @return 0 on success, negative AVERROR on fail + */ +int av_copy_packet_side_data(AVPacket *dst, const AVPacket *src); + +/** * Free a packet. * * @param pkt packet to free @@ -3512,6 +3942,31 @@ int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type, uint8_t* av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size); +int av_packet_merge_side_data(AVPacket *pkt); + +int av_packet_split_side_data(AVPacket *pkt); + +const char *av_packet_side_data_name(enum AVPacketSideDataType type); + +/** + * Pack a dictionary for use in side_data. + * + * @param dict The dictionary to pack. + * @param size pointer to store the size of the returned data + * @return pointer to data if successful, NULL otherwise + */ +uint8_t *av_packet_pack_dictionary(AVDictionary *dict, int *size); +/** + * Unpack a dictionary from side_data. + * + * @param data data from side_data + * @param size size of the data + * @param dict the metadata storage dictionary + * @return 0 on success, < 0 on failure + */ +int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict); + + /** * Convenience function to free all the side data stored. * All the other fields stay untouched. @@ -3536,7 +3991,7 @@ void av_packet_free_side_data(AVPacket *pkt); * * @return 0 on success, a negative AVERROR on error. */ -int av_packet_ref(AVPacket *dst, AVPacket *src); +int av_packet_ref(AVPacket *dst, const AVPacket *src); /** * Wipe the packet. @@ -3652,6 +4107,28 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS]); /** + * Converts AVChromaLocation to swscale x/y chroma position. + * + * The positions represent the chroma (0,0) position in a coordinates system + * with luma (0,0) representing the origin and luma(1,1) representing 256,256 + * + * @param xpos horizontal chroma sample position + * @param ypos vertical chroma sample position + */ +int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos); + +/** + * Converts swscale x/y chroma position to AVChromaLocation. + * + * The positions represent the chroma (0,0) position in a coordinates system + * with luma (0,0) representing the origin and luma(1,1) representing 256,256 + * + * @param xpos horizontal chroma sample position + * @param ypos vertical chroma sample position + */ +enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos); + +/** * Decode the audio frame of size avpkt->size from avpkt->data into frame. * * Some decoders may support multiple frames in a single AVPacket. Such @@ -3703,7 +4180,7 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, * AVPacket is returned. */ int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, - int *got_frame_ptr, AVPacket *avpkt); + int *got_frame_ptr, const AVPacket *avpkt); /** * Decode the video frame of size avpkt->size from avpkt->data into picture. @@ -3739,7 +4216,7 @@ int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, * next call to this function or until closing or flushing the * decoder. The caller may not write to it. * - * @param[in] avpkt The input AVpacket containing the input buffer. + * @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 @@ -3750,7 +4227,7 @@ int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, */ int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, - AVPacket *avpkt); + const AVPacket *avpkt); /** * Decode a subtitle message. @@ -3762,12 +4239,20 @@ int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, * and reusing a get_buffer written for video codecs would probably perform badly * due to a potentially very different allocation pattern. * + * Some decoders (those marked with CODEC_CAP_DELAY) have a delay between input + * and output. This means that for some packets they will not immediately + * produce decoded output and need to be flushed at the end of decoding to get + * all the decoded data. Flushing is done by calling this function with packets + * with avpkt->data set to NULL and avpkt->size set to 0 until it stops + * returning subtitles. It is safe to flush even those decoders that are not + * marked with CODEC_CAP_DELAY, then no subtitles will be returned. + * * @note The AVCodecContext MUST have been opened with @ref avcodec_open2() * before packets may be fed to the decoder. * * @param avctx the codec context - * @param[out] sub The AVSubtitle in which the decoded subtitle will be stored, must be - freed with avsubtitle_free if *got_sub_ptr is set. + * @param[out] sub The Preallocated AVSubtitle in which the decoded subtitle will be stored, + * must be freed with avsubtitle_free if *got_sub_ptr is set. * @param[in,out] got_sub_ptr Zero if no subtitle could be decompressed, otherwise, it is nonzero. * @param[in] avpkt The input AVPacket containing the input buffer. */ @@ -3825,6 +4310,7 @@ typedef struct AVCodecParserContext { #define PARSER_FLAG_ONCE 0x0002 /// Set if the parser has a valid file offset #define PARSER_FLAG_FETCHED_OFFSET 0x0004 +#define PARSER_FLAG_USE_CODEC_TS 0x1000 int64_t offset; ///< byte offset from starting packet start int64_t cur_frame_end[AV_PARSER_PTS_NB]; @@ -4021,7 +4507,7 @@ int av_parser_parse2(AVCodecParserContext *s, /** * @return 0 if the output buffer is a subset of the input, 1 if it is allocated and must be freed - * @deprecated use AVBitstreamFilter + * @deprecated use AVBitStreamFilter */ int av_parser_change(AVCodecParserContext *s, AVCodecContext *avctx, @@ -4068,11 +4554,12 @@ AVCodec *avcodec_find_encoder_by_name(const char *name); * The user can supply an output buffer by setting * avpkt->data and avpkt->size prior to calling the * function, but if the size of the user-provided data is not - * large enough, encoding will fail. All other AVPacket fields - * will be reset by the encoder using av_init_packet(). If - * avpkt->data is NULL, the encoder will allocate it. - * The encoder will set avpkt->size to the size of the - * output packet. + * large enough, encoding will fail. If avpkt->data and + * avpkt->size are set, avpkt->destruct must also be set. All + * other AVPacket fields will be reset by the encoder using + * av_init_packet(). If avpkt->data is NULL, the encoder will + * allocate it. The encoder will set avpkt->size to the size + * of the output packet. * * If this function fails or produces no output, avpkt will be * freed using av_free_packet() (i.e. avpkt->destruct will be @@ -4141,21 +4628,121 @@ int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, * @} */ +#if FF_API_AVCODEC_RESAMPLE +/** + * @defgroup lavc_resample Audio resampling + * @ingroup libavc + * @deprecated use libswresample instead + * + * @{ + */ +struct ReSampleContext; +struct AVResampleContext; + +typedef struct ReSampleContext ReSampleContext; + +/** + * Initialize audio resampling context. + * + * @param output_channels number of output channels + * @param input_channels number of input channels + * @param output_rate output sample rate + * @param input_rate input sample rate + * @param sample_fmt_out requested output sample format + * @param sample_fmt_in input sample format + * @param filter_length length of each FIR filter in the filterbank relative to the cutoff frequency + * @param log2_phase_count log2 of the number of entries in the polyphase filterbank + * @param linear if 1 then the used FIR filter will be linearly interpolated + between the 2 closest, if 0 the closest will be used + * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate + * @return allocated ReSampleContext, NULL if error occurred + */ +attribute_deprecated +ReSampleContext *av_audio_resample_init(int output_channels, int input_channels, + int output_rate, int input_rate, + enum AVSampleFormat sample_fmt_out, + enum AVSampleFormat sample_fmt_in, + int filter_length, int log2_phase_count, + int linear, double cutoff); + +attribute_deprecated +int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples); + +/** + * Free resample context. + * + * @param s a non-NULL pointer to a resample context previously + * created with av_audio_resample_init() + */ +attribute_deprecated +void audio_resample_close(ReSampleContext *s); + + +/** + * Initialize an audio resampler. + * Note, if either rate is not an integer then simply scale both rates up so they are. + * @param filter_length length of each FIR filter in the filterbank relative to the cutoff freq + * @param log2_phase_count log2 of the number of entries in the polyphase filterbank + * @param linear If 1 then the used FIR filter will be linearly interpolated + between the 2 closest, if 0 the closest will be used + * @param cutoff cutoff frequency, 1.0 corresponds to half the output sampling rate + */ +attribute_deprecated +struct AVResampleContext *av_resample_init(int out_rate, int in_rate, int filter_length, int log2_phase_count, int linear, double cutoff); + +/** + * Resample an array of samples using a previously configured context. + * @param src an array of unconsumed samples + * @param consumed the number of samples of src which have been consumed are returned here + * @param src_size the number of unconsumed samples available + * @param dst_size the amount of space in samples available in dst + * @param update_ctx If this is 0 then the context will not be modified, that way several channels can be resampled with the same context. + * @return the number of samples written in dst or -1 if an error occurred + */ +attribute_deprecated +int av_resample(struct AVResampleContext *c, short *dst, short *src, int *consumed, int src_size, int dst_size, int update_ctx); + + +/** + * Compensate samplerate/timestamp drift. The compensation is done by changing + * the resampler parameters, so no audible clicks or similar distortions occur + * @param compensation_distance distance in output samples over which the compensation should be performed + * @param sample_delta number of output samples which should be output less + * + * example: av_resample_compensate(c, 10, 500) + * here instead of 510 samples only 500 samples would be output + * + * note, due to rounding the actual compensation might be slightly different, + * especially if the compensation_distance is large and the in_rate used during init is small + */ +attribute_deprecated +void av_resample_compensate(struct AVResampleContext *c, int sample_delta, int compensation_distance); +attribute_deprecated +void av_resample_close(struct AVResampleContext *c); + +/** + * @} + */ +#endif + /** * @addtogroup lavc_picture * @{ */ /** - * Allocate memory for a picture. Call avpicture_free() to free it. + * Allocate memory for the pixels of a picture and setup the AVPicture + * fields for it. * - * @see avpicture_fill() + * Call avpicture_free() to free it. * - * @param picture the picture to be filled in - * @param pix_fmt the format of the picture - * @param width the width of the picture - * @param height the height of the picture - * @return zero if successful, a negative value if not + * @param picture the picture structure to be filled in + * @param pix_fmt the pixel format of the picture + * @param width the width of the picture + * @param height the height of the picture + * @return zero if successful, a negative error code otherwise + * + * @see av_image_alloc(), avpicture_fill() */ int avpicture_alloc(AVPicture *picture, enum AVPixelFormat pix_fmt, int width, int height); @@ -4169,34 +4756,69 @@ int avpicture_alloc(AVPicture *picture, enum AVPixelFormat pix_fmt, int width, i void avpicture_free(AVPicture *picture); /** - * Fill in the AVPicture fields, always assume a linesize alignment of 1. + * Setup the picture fields based on the specified image parameters + * and the provided image data buffer. + * + * The picture fields are filled in by using the image data buffer + * pointed to by ptr. + * + * If ptr is NULL, the function will fill only the picture linesize + * array and return the required size for the image buffer. + * + * To allocate an image buffer and fill the picture data in one call, + * use avpicture_alloc(). + * + * @param picture the picture to be filled in + * @param ptr buffer where the image data is stored, or NULL + * @param pix_fmt the pixel format of the image + * @param width the width of the image in pixels + * @param height the height of the image in pixels + * @return the size in bytes required for src, a negative error code + * in case of failure * - * @see av_image_fill_arrays(). + * @see av_image_fill_arrays() */ -int avpicture_fill(AVPicture *picture, uint8_t *ptr, +int avpicture_fill(AVPicture *picture, const uint8_t *ptr, enum AVPixelFormat pix_fmt, int width, int height); /** - * Copy pixel data from an AVPicture into a buffer, always assume a - * linesize alignment of 1. + * Copy pixel data from an AVPicture into a buffer. * - * @see av_image_copy_to_buffer(). + * avpicture_get_size() can be used to compute the required size for + * the buffer to fill. + * + * @param src source picture with filled data + * @param pix_fmt picture pixel format + * @param width picture width + * @param height picture height + * @param dest destination buffer + * @param dest_size destination buffer size in bytes + * @return the number of bytes written to dest, or a negative value + * (error code) on error, for example if the destination buffer is not + * big enough + * + * @see av_image_copy_to_buffer() */ -int avpicture_layout(const AVPicture* src, enum AVPixelFormat pix_fmt, +int avpicture_layout(const AVPicture *src, enum AVPixelFormat pix_fmt, int width, int height, unsigned char *dest, int dest_size); /** * Calculate the size in bytes that a picture of the given width and height * would occupy if stored in the given picture format. - * Always assume a linesize alignment of 1. + * + * @param pix_fmt picture pixel format + * @param width picture width + * @param height picture height + * @return the computed picture buffer size or a negative error code + * in case of error * * @see av_image_get_buffer_size(). */ int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height); /** - * Copy image src to dst. Wraps av_picture_data_copy() above. + * Copy image src to dst. Wraps av_image_copy(). */ void av_picture_copy(AVPicture *dst, const AVPicture *src, enum AVPixelFormat pix_fmt, int width, int height); @@ -4234,10 +4856,21 @@ int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, */ /** - * @deprecated Use av_pix_fmt_get_chroma_sub_sample + * Utility function to access log2_chroma_w log2_chroma_h from + * the pixel format AVPixFmtDescriptor. + * + * This function asserts that pix_fmt is valid. See av_pix_fmt_get_chroma_sub_sample + * for one that returns a failure code and continues in case of invalid + * pix_fmts. + * + * @param[in] pix_fmt the pixel format + * @param[out] h_shift store log2_chroma_w + * @param[out] v_shift store log2_chroma_h + * + * @see av_pix_fmt_get_chroma_sub_sample */ -void attribute_deprecated avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift); +void avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift); /** * Return a value representing the fourCC code associated to the @@ -4246,29 +4879,8 @@ void attribute_deprecated avcodec_get_chroma_sub_sample(enum AVPixelFormat pix_f */ unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat pix_fmt); -#define FF_LOSS_RESOLUTION 0x0001 /**< loss due to resolution change */ -#define FF_LOSS_DEPTH 0x0002 /**< loss due to color depth change */ -#define FF_LOSS_COLORSPACE 0x0004 /**< loss due to color space conversion */ -#define FF_LOSS_ALPHA 0x0008 /**< loss of alpha bits */ -#define FF_LOSS_COLORQUANT 0x0010 /**< loss due to color quantization */ -#define FF_LOSS_CHROMA 0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */ - -/** - * Compute what kind of losses will occur when converting from one specific - * pixel format to another. - * When converting from one pixel format to another, information loss may occur. - * For example, when converting from RGB24 to GRAY, the color information will - * be lost. Similarly, other losses occur when converting from some formats to - * other formats. These losses can involve loss of chroma, but also loss of - * resolution, loss of color depth, loss due to the color space conversion, loss - * of the alpha bits or loss due to color quantization. - * avcodec_get_fix_fmt_loss() informs you about the various types of losses - * which will occur when converting from one pixel format to another. - * - * @param[in] dst_pix_fmt destination pixel format - * @param[in] src_pix_fmt source pixel format - * @param[in] has_alpha Whether the source pixel format alpha channel is used. - * @return Combination of flags informing you what kind of losses will occur. +/** + * @deprecated see av_get_pix_fmt_loss() */ int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt, int has_alpha); @@ -4278,7 +4890,7 @@ int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat * format. When converting from one pixel format to another, information loss * may occur. For example, when converting from RGB24 to GRAY, the color * information will be lost. Similarly, other losses occur when converting from - * some formats to other formats. avcodec_find_best_pix_fmt2() searches which of + * some formats to other formats. avcodec_find_best_pix_fmt_of_2() searches which of * the given pixel formats should be used to suffer the least amount of loss. * The pixel formats from which it chooses one, are determined by the * pix_fmt_list parameter. @@ -4290,9 +4902,26 @@ int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat * @param[out] loss_ptr Combination of flags informing you what kind of losses will occur. * @return The best pixel format to convert to or -1 if none was found. */ -enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat *pix_fmt_list, +enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(const enum AVPixelFormat *pix_fmt_list, + enum AVPixelFormat src_pix_fmt, + int has_alpha, int *loss_ptr); + +/** + * @deprecated see av_find_best_pix_fmt_of_2() + */ +enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, + enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr); + +attribute_deprecated +#if AV_HAVE_INCOMPATIBLE_LIBAV_ABI +enum AVPixelFormat avcodec_find_best_pix_fmt2(const enum AVPixelFormat *pix_fmt_list, enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr); +#else +enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2, + enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr); +#endif + enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat * fmt); @@ -4335,7 +4964,12 @@ int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, //FIXME func typedef /** - * Fill audio frame data and linesize. + * Fill AVFrame audio data and linesize pointers. + * + * The buffer buf must be a preallocated buffer with a size big enough + * to contain the specified samples amount. The filled AVFrame data + * pointers will point to this buffer. + * * AVFrame extended_data channel pointers are allocated if necessary for * planar audio. * @@ -4348,7 +4982,9 @@ int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, * @param buf buffer to use for frame data * @param buf_size size of buffer * @param align plane size sample alignment (0 = default) - * @return 0 on success, negative error code on failure + * @return >=0 on success, negative error code on failure + * @todo return the size in bytes required to store the samples in + * case of success, at the next libavutil bump */ int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, @@ -4374,6 +5010,14 @@ void avcodec_flush_buffers(AVCodecContext *avctx); int av_get_bits_per_sample(enum AVCodecID codec_id); /** + * Return the PCM codec associated with a sample format. + * @param be endianness, 0 for little, 1 for big, + * -1 (or anything else) for native + * @return AV_CODEC_ID_PCM_* or AV_CODEC_ID_NONE + */ +enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be); + +/** * Return codec bits per sample. * Only return non-zero if the bits per sample is exactly correct, not an * approximation. @@ -4413,28 +5057,98 @@ typedef struct AVBitStreamFilter { struct AVBitStreamFilter *next; } AVBitStreamFilter; +/** + * Register a bitstream filter. + * + * The filter will be accessible to the application code through + * av_bitstream_filter_next() or can be directly initialized with + * av_bitstream_filter_init(). + * + * @see avcodec_register_all() + */ void av_register_bitstream_filter(AVBitStreamFilter *bsf); + +/** + * Create and initialize a bitstream filter context given a bitstream + * filter name. + * + * The returned context must be freed with av_bitstream_filter_close(). + * + * @param name the name of the bitstream filter + * @return a bitstream filter context if a matching filter was found + * and successfully initialized, NULL otherwise + */ AVBitStreamFilterContext *av_bitstream_filter_init(const char *name); + +/** + * Filter bitstream. + * + * This function filters the buffer buf with size buf_size, and places the + * filtered buffer in the buffer pointed to by poutbuf. + * + * The output buffer must be freed by the caller. + * + * @param bsfc bitstream filter context created by av_bitstream_filter_init() + * @param avctx AVCodecContext accessed by the filter, may be NULL. + * If specified, this must point to the encoder context of the + * output stream the packet is sent to. + * @param args arguments which specify the filter configuration, may be NULL + * @param poutbuf pointer which is updated to point to the filtered buffer + * @param poutbuf_size pointer which is updated to the filtered buffer size in bytes + * @param buf buffer containing the data to filter + * @param buf_size size in bytes of buf + * @param keyframe set to non-zero if the buffer to filter corresponds to a key-frame packet data + * @return >= 0 in case of success, or a negative error code in case of failure + * + * If the return value is positive, an output buffer is allocated and + * is available in *poutbuf, and is distinct from the input buffer. + * + * If the return value is 0, the output buffer is not allocated and + * should be considered identical to the input buffer, or in case + * *poutbuf was set it points to the input buffer (not necessarily to + * its starting address). + */ int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int keyframe); + +/** + * Release bitstream filter context. + * + * @param bsf the bitstream filter context created with + * av_bitstream_filter_init(), can be NULL + */ void av_bitstream_filter_close(AVBitStreamFilterContext *bsf); +/** + * If f is NULL, return the first registered bitstream filter, + * if f is non-NULL, return the next registered bitstream filter + * after f, or NULL if f is the last one. + * + * This function can be used to iterate over all registered bitstream + * filters. + */ AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f); /* memory */ /** - * Allocate a buffer with padding, reusing the given one if large enough. - * * Same behaviour av_fast_malloc but the buffer has additional - * AV_INPUT_PADDING_SIZE at the end which will always memset to 0. + * AV_INPUT_BUFFER_PADDING_SIZE at the end which will always be 0. * + * In addition the whole buffer will initially and after resizes + * be 0-initialized so that no uninitialized data will ever appear. */ void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size); /** + * Same behaviour av_fast_padded_malloc except that buffer will always + * be 0-initialized after call. + */ +void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size); + +/** * 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 @@ -4446,7 +5160,7 @@ unsigned int av_xiphlacing(unsigned char *s, unsigned int v); #if FF_API_MISSING_SAMPLE /** * Log a generic warning message about a missing feature. This function is - * intended to be used internally by Libav (libavcodec, libavformat, etc.) + * 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 @@ -4462,7 +5176,7 @@ 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 Libav (libavcodec, libavformat, etc.) + * 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 @@ -4527,6 +5241,12 @@ int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)); enum AVMediaType avcodec_get_type(enum AVCodecID codec_id); /** + * Get the name of a codec. + * @return a static string identifying the codec; never NULL + */ +const char *avcodec_get_name(enum AVCodecID id); + +/** * @return a positive value if s is open (i.e. avcodec_open2() was called on it * with no corresponding avcodec_close()), 0 otherwise. */ |