diff options
Diffstat (limited to 'libavcodec/avcodec.h')
| -rw-r--r-- | libavcodec/avcodec.h | 1349 |
1 files changed, 1167 insertions, 182 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 88e6c62272..60f7acefbd 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" @@ -41,13 +42,10 @@ #include "version.h" -#if FF_API_FAST_MALLOC -// to provide fast_*alloc -#include "libavutil/mem.h" -#endif - /** - * @defgroup libavc Encoding/Decoding Library + * @defgroup libavc libavcodec + * Encoding/Decoding Library + * * @{ * * @defgroup lavc_decoding Decoding @@ -91,7 +89,7 @@ * - Send valid input: * - For decoding, call avcodec_send_packet() to give the decoder raw * compressed data in an AVPacket. - * - For encoding, call avcodec_send_frame() to give the decoder an AVFrame + * - For encoding, call avcodec_send_frame() to give the encoder an AVFrame * containing uncompressed audio or video. * In both cases, it is recommended that AVPackets and AVFrames are * refcounted, or libavcodec might have to copy the input data. (libavformat @@ -114,6 +112,12 @@ * are filled. This situation is handled transparently if you follow the steps * outlined above. * + * In theory, sending input can result in EAGAIN - this should happen only if + * not all output was received. You can use this to structure alternative decode + * or encode loops other than the one suggested above. For example, you could + * try sending new input on each iteration, and try to receive output if that + * returns EAGAIN. + * * End of stream situations. These require "flushing" (aka draining) the codec, * as the codec might buffer multiple frames or packets internally for * performance or out of necessity (consider B-frames). @@ -138,8 +142,9 @@ * * Not all codecs will follow a rigid and predictable dataflow; the only * guarantee is that an AVERROR(EAGAIN) return value on a send/receive call on - * one end implies that a receive/send call on the other end will succeed. In - * general, no codec will permit unlimited buffering of input or output. + * one end implies that a receive/send call on the other end will succeed, or + * at least will not fail with AVERROR(EAGAIN). In general, no codec will + * permit unlimited buffering of input or output. * * This API replaces the following legacy functions: * - avcodec_decode_video2() and avcodec_decode_audio4(): @@ -148,7 +153,8 @@ * Unlike with the old video decoding API, multiple frames might result from * a packet. For audio, splitting the input packet into frames by partially * decoding packets becomes transparent to the API user. You never need to - * feed an AVPacket to the API twice. + * feed an AVPacket to the API twice (unless it is rejected with AVERROR(EAGAIN) - then + * no data was read from the packet). * Additionally, sending a flush/draining packet is required only once. * - avcodec_encode_video2()/avcodec_encode_audio2(): * Use avcodec_send_frame() to feed input to the encoder, then use @@ -158,10 +164,25 @@ * - The new API does not handle subtitles yet. * * Mixing new and old function calls on the same AVCodecContext is not allowed, - * and will result in arbitrary behavior. + * and will result in undefined behavior. * * Some codecs might require using the new API; using the old API will return - * an error when calling it. + * an error when calling it. All codecs support the new API. + * + * A codec is not allowed to return AVERROR(EAGAIN) for both sending and receiving. This + * would be an invalid state, which could put the codec user into an endless + * loop. The API has no concept of time either: it cannot happen that trying to + * do avcodec_send_packet() results in AVERROR(EAGAIN), but a repeated call 1 second + * later accepts the packet (with no other receive/flush API calls involved). + * The API is a strict state machine, and the passage of time is not supposed + * to influence it. Some timing-dependent behavior might still be deemed + * acceptable in certain cases. But it must never result in both send/receive + * returning EAGAIN at the same time at any point. It must also absolutely be + * avoided that the current state is "unstable" and can "flip-flop" between + * the send/receive APIs allowing progress. For example, it's not allowed that + * the codec randomly decides that it actually wants to consume a packet now + * instead of returning a frame, after it just returned AVERROR(EAGAIN) on an + * avcodec_send_packet() call. * @} */ @@ -184,8 +205,8 @@ * details. * * If you add a codec ID to this list, add it so that - * 1. no value of a existing codec ID changes (that would break ABI), - * 2. it is as close as possible to similar codecs. + * 1. no value of an existing codec ID changes (that would break ABI), + * 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. @@ -333,7 +354,7 @@ enum AVCodecID { AV_CODEC_ID_ANM, AV_CODEC_ID_BINKVIDEO, AV_CODEC_ID_IFF_ILBM, - AV_CODEC_ID_IFF_BYTERUN1, +#define AV_CODEC_ID_IFF_BYTERUN1 AV_CODEC_ID_IFF_ILBM AV_CODEC_ID_KGV1, AV_CODEC_ID_YOP, AV_CODEC_ID_VP8, @@ -371,6 +392,7 @@ 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, @@ -389,8 +411,36 @@ enum AVCodecID { AV_CODEC_ID_DXV, AV_CODEC_ID_SCREENPRESSO, AV_CODEC_ID_RSCC, - AV_CODEC_ID_MAGICYUV, + + 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, + AV_CODEC_ID_DAALA, + AV_CODEC_ID_CFHD, AV_CODEC_ID_TRUEMOTION2RT, + AV_CODEC_ID_M101, + AV_CODEC_ID_MAGICYUV, + AV_CODEC_ID_SHEERVIDEO, + AV_CODEC_ID_YLC, + AV_CODEC_ID_PSD, + AV_CODEC_ID_PIXLET, + AV_CODEC_ID_SPEEDHQ, + AV_CODEC_ID_FMVC, + AV_CODEC_ID_SCPR, + AV_CODEC_ID_CLEARVIDEO, + AV_CODEC_ID_XPM, AV_CODEC_ID_AV1, /* various PCM "codecs" */ @@ -427,6 +477,11 @@ enum AVCodecID { AV_CODEC_ID_PCM_S32LE_PLANAR, AV_CODEC_ID_PCM_S16BE_PLANAR, + AV_CODEC_ID_PCM_S64LE = 0x10800, + AV_CODEC_ID_PCM_S64BE, + AV_CODEC_ID_PCM_F16LE, + AV_CODEC_ID_PCM_F24LE, + /* various ADPCM codecs */ AV_CODEC_ID_ADPCM_IMA_QT = 0x11000, AV_CODEC_ID_ADPCM_IMA_WAV, @@ -459,6 +514,20 @@ 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, + AV_CODEC_ID_ADPCM_PSX, + AV_CODEC_ID_ADPCM_AICA, + AV_CODEC_ID_ADPCM_IMA_DAT4, + AV_CODEC_ID_ADPCM_MTAF, /* AMR */ AV_CODEC_ID_AMR_NB = 0x12000, @@ -474,6 +543,8 @@ enum AVCodecID { AV_CODEC_ID_XAN_DPCM, AV_CODEC_ID_SOL_DPCM, + AV_CODEC_ID_SDX2_DPCM = 0x14800, + /* audio codecs */ AV_CODEC_ID_MP2 = 0x15000, AV_CODEC_ID_MP3, ///< preferred ID for decoding MPEG audio layer 1, 2 or 3 @@ -546,6 +617,23 @@ 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, + AV_CODEC_ID_INTERPLAY_ACM, + AV_CODEC_ID_XMA1, + AV_CODEC_ID_XMA2, + AV_CODEC_ID_DST, + AV_CODEC_ID_ATRAC3AL, + AV_CODEC_ID_ATRAC3PAL, + /* subtitle codecs */ AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs. AV_CODEC_ID_DVD_SUBTITLE = 0x17000, @@ -558,10 +646,37 @@ 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_SCTE_35, ///< Contain timestamp estimated through PCR of program stream. + 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 @@ -595,6 +710,12 @@ typedef struct AVCodecDescriptor { */ 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; + /** * If non-NULL, an array of profiles recognized for this codec. * Terminated with FF_PROFILE_UNKNOWN. */ @@ -626,6 +747,16 @@ 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 @@ -635,7 +766,7 @@ 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 @@ -648,7 +779,7 @@ 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 @@ -672,6 +803,7 @@ 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 @@ -685,6 +817,7 @@ 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 }; @@ -795,7 +928,7 @@ typedef struct RcOverride{ * interlaced motion estimation */ #define AV_CODEC_FLAG_INTERLACED_ME (1 << 29) -#define AV_CODEC_FLAG_CLOSED_GOP (1 << 31) +#define AV_CODEC_FLAG_CLOSED_GOP (1U << 31) /** * Allow non spec compliant speedup tricks. @@ -809,6 +942,12 @@ 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. @@ -819,6 +958,23 @@ 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) +/** + * Do not reset ASS ReadOrder field on flush (subtitles decoding) + */ +#define AV_CODEC_FLAG2_RO_FLUSH_NOOP (1 << 30) + /* Unsupported options : * Syntax Arithmetic coding (SAC) * Reference Picture Selection @@ -866,6 +1022,14 @@ 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 @@ -907,17 +1071,36 @@ typedef struct RcOverride{ * Audio encoder supports receiving a different number of samples in each call. */ #define AV_CODEC_CAP_VARIABLE_FRAME_SIZE (1 << 16) +/** + * Decoder is not a preferred choice for probing. + * This indicates that the decoder is not a good choice for probing. + * It could for example be an expensive to spin up hardware decoder, + * or it could simply not provide a lot of useful information about + * the stream. + * A decoder marked with this flag should only be used as last resort + * choice for probing. + */ +#define AV_CODEC_CAP_AVOID_PROBING (1 << 17) +/** + * 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 @@ -938,9 +1121,9 @@ 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 @@ -948,9 +1131,9 @@ 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 @@ -958,21 +1141,24 @@ 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 H.263+ 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) @@ -981,16 +1167,22 @@ 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 */ /** @@ -1016,17 +1208,17 @@ 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 @@ -1039,16 +1231,16 @@ 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 @@ -1058,23 +1250,37 @@ 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 @@ -1271,11 +1477,16 @@ 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_FACTOR, + AV_PKT_DATA_QUALITY_STATS, /** * This side data contains an integer value representing the stream index @@ -1289,8 +1500,93 @@ enum AVPacketSideDataType { * This side data corresponds to the AVCPBProperties struct. */ AV_PKT_DATA_CPB_PROPERTIES, + + /** + * 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_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, + + /** + * MPEGTS stream ID, this is required to pass the stream ID + * information from the demuxer to the corresponding muxer. + */ + AV_PKT_DATA_MPEGTS_STREAM_ID, + + /** + * Mastering display metadata (based on SMPTE-2086:2014). This metadata + * should be associated with a video stream and containts data in the form + * of the AVMasteringDisplayMetadata struct. + */ + AV_PKT_DATA_MASTERING_DISPLAY_METADATA, + + /** + * This side data should be associated with a video stream and corresponds + * to the AVSphericalMapping structure. + */ + AV_PKT_DATA_SPHERICAL, }; +#define AV_PKT_DATA_QUALITY_FACTOR AV_PKT_DATA_QUALITY_STATS //DEPRECATED + typedef struct AVPacketSideData { uint8_t *data; int size; @@ -1307,7 +1603,7 @@ typedef struct AVPacketSideData { * packets, with no compressed data, containing only side data * (e.g. to update some stream parameters at the end of encoding). * - * 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. * @@ -1382,6 +1678,12 @@ typedef struct AVPacket { } AVPacket; #define AV_PKT_FLAG_KEY 0x0001 ///< The packet contains a keyframe #define AV_PKT_FLAG_CORRUPT 0x0002 ///< The packet content is corrupted +/** + * Flag is used to discard packets which are required to maintain valid + * decoder state but are not required for output and should be dropped + * after decoding. + **/ +#define AV_PKT_FLAG_DISCARD 0x0004 enum AVSideDataParamChangeFlags { AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT = 0x0001, @@ -1409,6 +1711,12 @@ 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. + * You can use AVOptions (av_opt* / av_set/get*()) to access these fields from user + * applications. + * The name string for AVOptions options matches the associated command line + * parameter name and can be found in libavcodec/options_table.h + * The AVOption/command line parameter names differ in some cases from the C + * structure field names for historic reasons or brevity. * sizeof(AVCodecContext) must not be used outside libav*. */ typedef struct AVCodecContext { @@ -1473,9 +1781,10 @@ 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; + int64_t bit_rate; /** * number of bits the bitstream is allowed to diverge from the reference. @@ -1533,6 +1842,16 @@ 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. 1/time_base is not the average frame rate if the frame rate is not + * constant. + * + * Like containers, elementary streams also can store timestamps, 1/time_base + * is the unit in which these timestamps are specified. + * As example of such codec time base see ISO/IEC 14496-2:2001(E) + * vop_time_increment_resolution and fixed_vop_rate + * (fixed_vop_rate == 0 implies that it is different from the framerate) + * * - encoding: MUST be set by user. * - decoding: the use of this field for decoding is deprecated. * Use framerate instead. @@ -1551,6 +1870,11 @@ 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. @@ -1586,7 +1910,7 @@ 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 output by avcodec_receive_frame() due frame @@ -1832,20 +2156,23 @@ typedef struct AVCodecContext { * - 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_DCTMAX 13 -#define FF_CMP_DCT264 14 -#define FF_CMP_CHROMA 256 +#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_MEDIAN_SAD 15 +#define FF_CMP_CHROMA 256 /** * ME diamond size & shape @@ -1945,7 +2272,7 @@ 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 */ @@ -2001,7 +2328,7 @@ typedef struct AVCodecContext { /** * precision of the intra DC coefficient - 8 * - encoding: Set by user. - * - decoding: unused + * - decoding: Set by libavcodec */ int intra_dc_precision; @@ -2149,7 +2476,7 @@ typedef struct AVCodecContext { /** Field order * - encoding: set by libavcodec - * - decoding: Set by libavcodec + * - decoding: Set by user. */ enum AVFieldOrder field_order; @@ -2203,7 +2530,7 @@ 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; @@ -2222,9 +2549,10 @@ 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; @@ -2282,6 +2610,8 @@ 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. @@ -2387,16 +2717,16 @@ typedef struct AVCodecContext { /** * maximum bitrate * - encoding: Set by user. - * - decoding: unused + * - decoding: Set by user, may be overwritten by libavcodec. */ - int rc_max_rate; + int64_t rc_max_rate; /** * minimum bitrate * - encoding: Set by user. * - decoding: unused */ - int rc_min_rate; + int64_t rc_min_rate; #if FF_API_MPV_OPT /** @@ -2594,6 +2924,7 @@ typedef struct AVCodecContext { #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_IEDGE 32768 /** * strictly follow the standard (MPEG-4, ...). @@ -2622,6 +2953,7 @@ typedef struct AVCodecContext { int error_concealment; #define FF_EC_GUESS_MVS 1 #define FF_EC_DEBLOCK 2 +#define FF_EC_FAVOR_INTER 256 /** * debug @@ -2655,12 +2987,15 @@ typedef struct AVCodecContext { #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 + * - 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 @@ -2681,9 +3016,15 @@ 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 64-bit number (generally a PTS) that will be reordered and @@ -2704,8 +3045,8 @@ 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 @@ -2765,6 +3106,7 @@ 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). @@ -2785,10 +3127,8 @@ 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 */ - attribute_deprecated int lowres; + int lowres; #endif #if FF_API_CODED_FRAME @@ -2897,6 +3237,13 @@ typedef struct AVCodecContext { #define FF_PROFILE_MPEG2_AAC_LOW 128 #define FF_PROFILE_MPEG2_AAC_HE 131 +#define FF_PROFILE_DNXHD 0 +#define FF_PROFILE_DNXHR_LB 1 +#define FF_PROFILE_DNXHR_SQ 2 +#define FF_PROFILE_DNXHR_HQ 3 +#define FF_PROFILE_DNXHR_HQX 4 +#define FF_PROFILE_DNXHR_444 5 + #define FF_PROFILE_DTS 20 #define FF_PROFILE_DTS_ES 30 #define FF_PROFILE_DTS_96_24 40 @@ -2977,18 +3324,21 @@ 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. */ @@ -3059,7 +3409,7 @@ 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. @@ -3076,6 +3426,122 @@ typedef struct AVCodecContext { enum AVPixelFormat sw_pix_fmt; /** + * Timebase in which pkt_dts/pts and AVPacket.dts/pts are. + * - encoding unused. + * - decoding set by user. + */ + AVRational pkt_timebase; + + /** + * AVCodecDescriptor + * - 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. + */ + 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). + * + * - 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 + * - 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 + * - encoding: Set by user, can be NULL. + * - decoding: unused. + */ + uint16_t *chroma_intra_matrix; + + /** + * dump format separator. + * can be ", " or "\n " or anything else + * - 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 + */ + char *codec_whitelist; + + /* + * Properties of the stream that gets decoded + * - encoding: unused + * - decoding: set by libavcodec + */ + unsigned properties; +#define FF_CODEC_PROPERTY_LOSSLESS 0x00000001 +#define FF_CODEC_PROPERTY_CLOSED_CAPTIONS 0x00000002 + + /** * Additional data associated with the entire coded stream. * * - decoding: unused @@ -3087,7 +3553,8 @@ typedef struct AVCodecContext { /** * A reference to the AVHWFramesContext describing the input (for encoding) * or output (decoding) frames. The reference is set by the caller and - * afterwards owned (and freed) by libavcodec. + * afterwards owned (and freed) by libavcodec - it should never be read by + * the caller after being set. * * - decoding: This field should be set by the caller from the get_format() * callback. The previous reference (if any) will always be @@ -3106,8 +3573,86 @@ typedef struct AVCodecContext { * This field should be set before avcodec_open2() is called. */ AVBufferRef *hw_frames_ctx; + + /** + * Control the form of AVSubtitle.rects[N]->ass + * - decoding: set by user + * - encoding: unused + */ + int sub_text_format; +#define FF_SUB_TEXT_FMT_ASS 0 +#if FF_API_ASS_TIMING +#define FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS 1 +#endif + + /** + * Audio only. The amount of padding (in samples) appended by the encoder to + * the end of the audio. I.e. this number of decoded samples must be + * discarded by the caller from the end of the stream to get the original + * audio without any trailing padding. + * + * - decoding: unused + * - encoding: unused + */ + int trailing_padding; + + /** + * The number of pixels per image to maximally accept. + * + * - decoding: set by user + * - encoding: set by user + */ + int64_t max_pixels; + + /** + * A reference to the AVHWDeviceContext describing the device which will + * be used by a hardware encoder/decoder. The reference is set by the + * caller and afterwards owned (and freed) by libavcodec. + * + * This should be used if either the codec device does not require + * hardware frames or any that are used are to be allocated internally by + * libavcodec. If the user wishes to supply any of the frames used as + * encoder input or decoder output then hw_frames_ctx should be used + * instead. When hw_frames_ctx is set in get_format() for a decoder, this + * field will be ignored while decoding the associated stream segment, but + * may again be used on a following one after another get_format() call. + * + * For both encoders and decoders this field should be set before + * avcodec_open2() is called and must not be written to thereafter. + * + * Note that some decoders may require this field to be set initially in + * order to support hw_frames_ctx at all - in that case, all frames + * contexts used must be created on the same device. + */ + AVBufferRef *hw_device_ctx; + + /** + * Bit set of AV_HWACCEL_FLAG_* flags, which affect hardware accelerated + * decoding (if active). + * - encoding: unused + * - decoding: Set by user (either before avcodec_open2(), or in the + * AVCodecContext.get_format callback) + */ + int hwaccel_flags; } 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. */ @@ -3148,9 +3693,7 @@ 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 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} @@ -3237,6 +3780,10 @@ typedef struct AVCodec { int caps_internal; } AVCodec; +int av_codec_get_max_lowres(const AVCodec *codec); + +struct MpegEncContext; + /** * @defgroup lavc_hwaccel AVHWAccel * @{ @@ -3272,7 +3819,7 @@ typedef struct AVHWAccel { /** * Hardware accelerated codec capabilities. - * see FF_HWACCEL_CODEC_CAP_* + * see HWACCEL_CODEC_CAP_* */ int capabilities; @@ -3311,6 +3858,7 @@ 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 @@ -3340,6 +3888,17 @@ 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 @@ -3361,12 +3920,20 @@ typedef struct AVHWAccel { * AVCodecInternal.hwaccel_priv_data. */ int priv_data_size; + + /** + * Internal hwaccel capabilities. + */ + int caps_internal; } 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) @@ -3389,13 +3956,15 @@ typedef struct AVHWAccel { */ /** - * four components are given, that's all. - * the last component is alpha - * @deprecated Use the imgutils functions + * Picture data structure. + * + * Up to four components can be stored into it, the last component is + * alpha. + * @deprecated use AVFrame or imgutils functions instead */ typedef struct AVPicture { attribute_deprecated - uint8_t *data[AV_NUM_DATA_POINTERS]; + uint8_t *data[AV_NUM_DATA_POINTERS]; ///< pointers to the image data planes attribute_deprecated int linesize[AV_NUM_DATA_POINTERS]; ///< number of bytes per line } AVPicture; @@ -3405,9 +3974,6 @@ typedef struct AVPicture { */ #endif -#define AVPALETTE_SIZE 1024 -#define AVPALETTE_COUNT 256 - enum AVSubtitleType { SUBTITLE_NONE, @@ -3459,6 +4025,7 @@ typedef struct AVSubtitleRect { * struct. */ char *ass; + int flags; } AVSubtitleRect; @@ -3515,11 +4082,35 @@ typedef struct AVCodecParameters { /** * The average bitrate of the encoded data (in bits per second). */ - int bit_rate; + int64_t bit_rate; + /** + * The number of bits per sample in the codedwords. + * + * This is basically the bitrate per sample. It is mandatory for a bunch of + * formats to actually decode them. It's the number of bits for one sample in + * the actual coded bitstream. + * + * This could be for example 4 for ADPCM + * For PCM formats this matches bits_per_raw_sample + * Can be 0 + */ int bits_per_coded_sample; /** + * This is the number of valid bits in each output sample. If the + * sample format has more bits, the least significant bits are additional + * padding bits, which are always 0. Use right shifts to reduce the sample + * to its actual size. For example, audio formats with 24 bit samples will + * have bits_per_raw_sample set to 24, and format set to AV_SAMPLE_FMT_S32. + * To get the original sample use "(int32_t)sample >> 8"." + * + * For ADPCM this might be 12 or 16 or similar + * Can be 0 + */ + int bits_per_raw_sample; + + /** * Codec-specific bitstream restrictions that the stream conforms to. */ int profile; @@ -3555,6 +4146,11 @@ typedef struct AVCodecParameters { enum AVChromaLocation chroma_location; /** + * Video only. Number of delayed frames. + */ + int video_delay; + + /** * Audio only. The channel layout bitmask. May be 0 if the channel layout is * unknown or unspecified, otherwise the number of bits set must be equal to * the channels field. @@ -3575,6 +4171,10 @@ typedef struct AVCodecParameters { * Corresponds to nBlockAlign in WAVEFORMATEX. */ int block_align; + /** + * Audio only. Audio frame size, if known. Required by some formats to be static. + */ + int frame_size; /** * Audio only. The amount of padding (in samples) inserted by the encoder at @@ -3590,6 +4190,10 @@ typedef struct AVCodecParameters { * audio without any trailing padding. */ int trailing_padding; + /** + * Audio only. Number of samples to skip after a discontinuity. + */ + int seek_preroll; } AVCodecParameters; /** @@ -3676,13 +4280,29 @@ const AVClass *avcodec_get_class(void); #if FF_API_COPY_CONTEXT /** + * 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 * @@ -3904,6 +4524,20 @@ int av_packet_from_data(AVPacket *pkt, uint8_t *data, int size); attribute_deprecated 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. * * @deprecated Use av_packet_unref @@ -3959,9 +4593,38 @@ int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type, * @param size pointer for side information size to store (optional) * @return pointer to data if present or NULL otherwise */ -uint8_t* av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, +uint8_t* av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size); +#if FF_API_MERGE_SD_API +attribute_deprecated +int av_packet_merge_side_data(AVPacket *pkt); + +attribute_deprecated +int av_packet_split_side_data(AVPacket *pkt); +#endif + +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. @@ -3986,7 +4649,7 @@ 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. @@ -4101,6 +4764,28 @@ 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 @@ -4155,7 +4840,7 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, */ attribute_deprecated 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. @@ -4205,7 +4890,7 @@ int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, attribute_deprecated int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, - AVPacket *avpkt); + const AVPacket *avpkt); /** * Decode a subtitle message. @@ -4217,12 +4902,20 @@ 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. */ @@ -4269,8 +4962,10 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, * a flush packet. * * @return 0 on success, otherwise negative error code: - * AVERROR(EAGAIN): input is not accepted right now - the packet must be - * resent after trying to read output + * AVERROR(EAGAIN): input is not accepted in the current state - user + * must read output with avcodec_receive_frame() (once + * all output is read, the packet should be resent, and + * the call will not fail with EAGAIN). * AVERROR_EOF: the decoder has been flushed, and no new packets can * be sent to it (also returned if more than 1 flush * packet is sent) @@ -4291,7 +4986,7 @@ int avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt); * * @return * 0: success, a frame was returned - * AVERROR(EAGAIN): output is not available right now - user must try + * AVERROR(EAGAIN): output is not available in this state - user must try * to send new input * AVERROR_EOF: the decoder has been fully flushed, and there will be * no more output frames @@ -4324,8 +5019,10 @@ int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame); * avctx->frame_size for all frames except the last. * The final frame may be smaller than avctx->frame_size. * @return 0 on success, otherwise negative error code: - * AVERROR(EAGAIN): input is not accepted right now - the frame must be - * resent after trying to read output packets + * AVERROR(EAGAIN): input is not accepted in the current state - user + * must read output with avcodec_receive_packet() (once + * all output is read, the packet should be resent, and + * the call will not fail with EAGAIN). * AVERROR_EOF: the encoder has been flushed, and no new frames can * be sent to it * AVERROR(EINVAL): codec not opened, refcounted_frames not set, it is a @@ -4343,8 +5040,8 @@ int avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame); * encoder. Note that the function will always call * av_frame_unref(frame) before doing anything else. * @return 0 on success, otherwise negative error code: - * AVERROR(EAGAIN): output is not available right now - user must try - * to send input + * AVERROR(EAGAIN): output is not available in the current state - user + * must try to send input * AVERROR_EOF: the encoder has been fully flushed, and there will be * no more output packets * AVERROR(EINVAL): codec not opened, or it is an encoder @@ -4403,6 +5100,7 @@ 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]; @@ -4559,7 +5257,10 @@ AVCodecParserContext *av_parser_init(int codec_id); * @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 buf_size buffer size in bytes without the padding. I.e. the full buffer + size is assumed to be buf_size + AV_INPUT_BUFFER_PADDING_SIZE. + 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. @@ -4588,7 +5289,7 @@ 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, @@ -4635,11 +5336,12 @@ 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_packet_unref(). @@ -4712,6 +5414,103 @@ 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 + #if FF_API_AVPICTURE /** * @addtogroup lavc_picture @@ -4734,14 +5533,14 @@ void avpicture_free(AVPicture *picture); * @deprecated use av_image_fill_arrays() instead. */ attribute_deprecated -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); /** * @deprecated use av_image_copy_to_buffer() instead. */ attribute_deprecated -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); @@ -4794,10 +5593,21 @@ 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 @@ -4806,29 +5616,8 @@ 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); @@ -4838,7 +5627,7 @@ 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. @@ -4850,9 +5639,19 @@ 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 src_pix_fmt, - int has_alpha, int *loss_ptr); +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 +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); enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat * fmt); @@ -4868,6 +5667,7 @@ attribute_deprecated void avcodec_set_dimensions(AVCodecContext *s, int width, int height); #endif +#if FF_API_TAG_STRING /** * Put a string representing the codec tag codec_tag in buf. * @@ -4876,8 +5676,12 @@ void avcodec_set_dimensions(AVCodecContext *s, int width, int height); * @param codec_tag codec tag to assign * @return the length of the string that would have been generated if * enough space had been available, excluding the trailing null + * + * @deprecated see av_fourcc_make_string() and av_fourcc2str(). */ +attribute_deprecated size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag); +#endif void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode); @@ -4908,7 +5712,12 @@ 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. * @@ -4921,7 +5730,9 @@ 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, @@ -4947,6 +5758,14 @@ 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. @@ -4975,9 +5794,14 @@ int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes); #if FF_API_OLD_BSF typedef struct AVBitStreamFilterContext { void *priv_data; - struct AVBitStreamFilter *filter; + const struct AVBitStreamFilter *filter; AVCodecParserContext *parser; struct AVBitStreamFilterContext *next; + /** + * Internal default arguments, used if NULL is passed to av_bitstream_filter_filter(). + * Not for access by library users. + */ + char *args; } AVBitStreamFilterContext; #endif @@ -5079,20 +5903,82 @@ typedef struct AVBitStreamFilter { #if FF_API_OLD_BSF /** - * @deprecated the old bitstream filtering API (using AVBitStreamFilterContext) - * is deprecated. Use the new bitstream filtering API (using AVBSFContext). + * 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() */ attribute_deprecated 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 + */ attribute_deprecated 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). A special case is if *poutbuf was set to NULL and + * *poutbuf_size was set to 0, which indicates the packet should be dropped. + */ attribute_deprecated 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 + */ attribute_deprecated 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. + */ attribute_deprecated AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f); #endif @@ -5141,7 +6027,8 @@ int av_bsf_init(AVBSFContext *ctx); * av_bsf_receive_packet() repeatedly until it returns AVERROR(EAGAIN) or * AVERROR_EOF. * - * @param pkt the packet to filter. The bitstream filter will take ownership of + * @param pkt the packet to filter. pkt must contain some payload (i.e data or + * side data must be present in pkt). The bitstream filter will take ownership of * the packet and reset the contents of pkt. pkt is not touched if an error occurs. * This parameter may be NULL, which signals the end of the stream (i.e. no more * packets will be sent). That will cause the filter to output any packets it @@ -5191,17 +6078,109 @@ void av_bsf_free(AVBSFContext **ctx); */ const AVClass *av_bsf_get_class(void); -/* memory */ +/** + * Structure for chain/list of bitstream filters. + * Empty list can be allocated by av_bsf_list_alloc(). + */ +typedef struct AVBSFList AVBSFList; + +/** + * Allocate empty list of bitstream filters. + * The list must be later freed by av_bsf_list_free() + * or finalized by av_bsf_list_finalize(). + * + * @return Pointer to @ref AVBSFList on success, NULL in case of failure + */ +AVBSFList *av_bsf_list_alloc(void); + +/** + * Free list of bitstream filters. + * + * @param lst Pointer to pointer returned by av_bsf_list_alloc() + */ +void av_bsf_list_free(AVBSFList **lst); /** - * Allocate a buffer with padding, reusing the given one if large enough. + * Append bitstream filter to the list of bitstream filters. * + * @param lst List to append to + * @param bsf Filter context to be appended + * + * @return >=0 on success, negative AVERROR in case of failure + */ +int av_bsf_list_append(AVBSFList *lst, AVBSFContext *bsf); + +/** + * Construct new bitstream filter context given it's name and options + * and append it to the list of bitstream filters. + * + * @param lst List to append to + * @param bsf_name Name of the bitstream filter + * @param options Options for the bitstream filter, can be set to NULL + * + * @return >=0 on success, negative AVERROR in case of failure + */ +int av_bsf_list_append2(AVBSFList *lst, const char * bsf_name, AVDictionary **options); +/** + * Finalize list of bitstream filters. + * + * This function will transform @ref AVBSFList to single @ref AVBSFContext, + * so the whole chain of bitstream filters can be treated as single filter + * freshly allocated by av_bsf_alloc(). + * If the call is successful, @ref AVBSFList structure is freed and lst + * will be set to NULL. In case of failure, caller is responsible for + * freeing the structure by av_bsf_list_free() + * + * @param lst Filter list structure to be transformed + * @param[out] bsf Pointer to be set to newly created @ref AVBSFContext structure + * representing the chain of bitstream filters + * + * @return >=0 on success, negative AVERROR in case of failure + */ +int av_bsf_list_finalize(AVBSFList **lst, AVBSFContext **bsf); + +/** + * Parse string describing list of bitstream filters and create single + * @ref AVBSFContext describing the whole chain of bitstream filters. + * Resulting @ref AVBSFContext can be treated as any other @ref AVBSFContext freshly + * allocated by av_bsf_alloc(). + * + * @param str String describing chain of bitstream filters in format + * `bsf1[=opt1=val1:opt2=val2][,bsf2]` + * @param[out] bsf Pointer to be set to newly created @ref AVBSFContext structure + * representing the chain of bitstream filters + * + * @return >=0 on success, negative AVERROR in case of failure + */ +int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf); + +/** + * Get null/pass-through bitstream filter. + * + * @param[out] bsf Pointer to be set to new instance of pass-through bitstream filter + * + * @return + */ +int av_bsf_get_null_filter(AVBSFContext **bsf); + +/* memory */ + +/** * 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 @@ -5213,7 +6192,7 @@ 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 @@ -5229,7 +6208,7 @@ 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 @@ -5294,6 +6273,12 @@ 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. */ |