ffmpeg原始碼簡析（十三）ffmpeg API變更 2009-03-01—— 2017-05-09變更

阿新 • • 發佈：2018-12-31

The last version increases were: libavcodec: 2015-08-28 libavdevice: 2015-08-28 libavfilter: 2015-08-28 libavformat: 2015-08-28 libavresample: 2015-08-28 libpostproc: 2015-08-28 libswresample: 2015-08-28 libswscale: 2015-08-28 libavutil: 2015-08-28 API changes, most recent first: 2017-03-31 - 9033e8723

c - lavu 55.57.100 - spherical.h Add av_spherical_projection_name(). Add av_spherical_from_name(). 2017-03-30 - 4cda23f1f1 - lavu 55.53.100 / 55.27.0 - hwcontext.h Add av_hwframe_map() and associated AV_HWFRAME_MAP_* flags. Add av_hwframe_ctx_create_derived(). 2017-03-29 - bfdcdd6d82 - lavu 55.52.100 - avutil.h add av_fourcc_make_string() function and

av_fourcc2str() macro to replace av_get_codec_tag_string() from lavc. 2017-03-27 - ddef3d902f - lavf 57.68.100 - avformat.h Deprecate that demuxers export the stream rotation angle in AVStream.metadata (via an entry named "rotate"). Use av_stream_get_side_data() with AV_PKT_DATA_DISPLAYMATRIX instead, and

read the rotation angle with av_display_rotation_get(). The same is done for muxing. Instead of adding a "rotate" entry to AVStream.metadata, AV_PKT_DATA_DISPLAYMATRIX side data has to be added to the AVStream. 2017-03-23 - 7e4ba776a2 - lavc 57.85.101 - avcodec.h vdpau hardware accelerated decoding now supports the new hwaccel API, which can create the decoder context and allocate hardware frame automatically. See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx. 2017-03-23 - 156bd8278f - lavc 57.85.100 - avcodec.h Add AVCodecContext.hwaccel_flags field. This will control some hwaccels at a later point. 2017-03-21 - fc9f14c7de - lavf 57.67.100 / 57.08.0 - avio.h Add AVIO_SEEKABLE_TIME flag. 2017-03-21 - d682ae70b4 - lavf 57.66.105, lavc 57.83.101 - avformat.h, avcodec.h Deprecate AVFMT_FLAG_KEEP_SIDE_DATA. It will be ignored after the next major bump, and libavformat will behave as if it were always set. Deprecate av_packet_merge_side_data() and av_packet_split_side_data(). 2016-03-20 - 8200b16a9c - lavu 55.50.100 / 55.21.0 - imgutils.h Add av_image_copy_uc_from(), a version of av_image_copy() for copying from GPU mapped memory. 2017-03-20 - 9c2436e - lavu 55.49.100 - pixdesc.h Add AV_PIX_FMT_FLAG_BAYER pixel format flag. 2017-03-18 - 3796fb2692 - lavfi 6.77.100 - avfilter.h Deprecate AVFilterGraph.resample_lavr_opts It's never been used by avfilter nor passed to anything. 2017-02-10 - 1b7ffddb3a - lavu 55.48.100 / 55.33.0 - spherical.h Add AV_SPHERICAL_EQUIRECTANGULAR_TILE, av_spherical_tile_bounds(), and projection-specific properties (bound_left, bound_top, bound_right, bound_bottom, padding) to AVSphericalMapping. 2017-03-02 - ade7c1a232 - lavc 57.81.104 - videotoolbox.h AVVideotoolboxContext.cv_pix_fmt_type can now be set to 0 to output the native decoder format. (The default value is not changed.) 2017-03-02 - 554bc4eea8 - lavu 55.47.101, lavc 57.81.102, lavf 57.66.103 Remove requirement to use AVOption or accessors to access certain fields in AVFrame, AVCodecContext, and AVFormatContext that were previously documented as "no direct access" allowed. 2017-02-13 - c1a5fca06f - lavc 57.80.100 - avcodec.h Add AVCodecContext.hw_device_ctx. 2017-02-11 - e3af49b14b - lavu 55.47.100 - frame.h Add AVFrame.opaque_ref. 2017-01-31 - 2eab48177d - lavu 55.46.100 / 55.20.0 - cpu.h Add AV_CPU_FLAG_SSSE3SLOW. 2017-01-24 - c4618f842a - lavu 55.45.100 - channel_layout.h Add av_get_extended_channel_layout() 2017-01-22 - 76c5a69e26 - lavu 55.44.100 - lfg.h Add av_lfg_init_from_data(). 2017-01-17 - 2a4a8653b6 - lavc 57.74.100 - vaapi.h Deprecate struct vaapi_context and the vaapi.h installed header. Callers should set AVCodecContext.hw_frames_ctx instead. 2017-01-12 - dbe9dbed31 - lavfi 6.69.100 - buffersink.h Add av_buffersink_get_*() functions. 2017-01-06 - 9488032e10 - lavf 57.62.100 - avio.h Add avio_get_dyn_buf() 2016-12-10 - f542b152aa - lavu 55.43.100 - imgutils.h Add av_image_check_size2() 2016-12-07 - e7a6f8c972 - lavc 57.67.100 / 57.29.0 - avcodec.h Add AV_PKT_DATA_SPHERICAL packet side data to export AVSphericalMapping information from containers. 2016-12-07 - 8f58ecc344 - lavu 55.42.100 / 55.30.0 - spherical.h Add AV_FRAME_DATA_SPHERICAL value, av_spherical_alloc() API and AVSphericalMapping type to export and describe spherical video properties. 2016-11-18 - 2ab50647ff - lavf 57.58.100 - avformat.h Add av_stream_add_side_data(). 2016-11-13 - 775a8477b7 - lavu 55.39.100 - hwcontext_vaapi.h Add AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE. 2016-11-13 - a8d51bb424 - lavu 55.38.100 - hwcontext_vaapi.h Add driver quirks field to VAAPI-specific hwdevice and enum with members AV_VAAPI_DRIVER_QUIRK_* to represent its values. 2016-11-10 - 638b216d4f - lavu 55.36.100 - pixfmt.h Add AV_PIX_FMT_GRAY12(LE/BE). -------- 8< --------- FFmpeg 3.2 was cut here -------- 8< --------- 2016-10-24 - 73ead47 - lavf 57.55.100 - avformat.h Add AV_DISPOSITION_TIMED_THUMBNAILS 2016-10-24 - a246fef - lavf 57.54.100 - avformat.h Add avformat_init_output() and AVSTREAM_INIT_IN_ macros 2016-10-22 - f5495c9 - lavu 55.33.100 - avassert.h Add av_assert0_fpu() / av_assert2_fpu() 2016-10-07 - 3f9137c / 32c8359 - lavc 57.61.100 / 57.24.0 - avcodec.h Decoders now export the frame timestamp as AVFrame.pts. It was previously exported as AVFrame.pkt_pts, which is now deprecated. Note: When decoding, AVFrame.pts uses the stream/packet timebase, and not the codec timebase. 2016-09-28 - eba0414 - lavu 55.32.100 / 55.16.0 - hwcontext.h hwcontext_qsv.h Add AV_HWDEVICE_TYPE_QSV and a new installed header with QSV-specific hwcontext definitions. 2016-09-26 - 32c25f0 - lavc 57.59.100 / 57.23.0 - avcodec.h AVCodecContext.hw_frames_ctx now may be used by decoders. 2016-09-27 - f0b6f72 - lavf 57.51.100 - avformat.h Add av_stream_get_codec_timebase() 2016-09-27 - 23c0779 - lswr 2.2.100 - swresample.h Add swr_build_matrix(). 2016-09-23 - 30d3e36 - lavc 57.58.100 - avcodec.h Add AV_CODEC_CAP_AVOID_PROBING codec capability flag. 2016-09-14 - ae1dd0c - lavf 57.49.100 - avformat.h Add avformat_transfer_internal_stream_timing_info helper to help with stream copy. 2016-08-29 - 4493390 - lavfi 6.58.100 - avfilter.h Add AVFilterContext.nb_threads. 2016-08-15 - c3c4c72 - lavc 57.53.100 - avcodec.h Add trailing_padding to AVCodecContext to match the corresponding field in AVCodecParameters. 2016-08-15 - b746ed7 - lavc 57.52.100 - avcodec.h Add a new API for chained BSF filters and passthrough (null) BSF -- av_bsf_list_alloc(), av_bsf_list_free(), av_bsf_list_append(), av_bsf_list_append2(), av_bsf_list_finalize(), av_bsf_list_parse_str() and av_bsf_get_null_filter(). 2016-08-04 - 82a33c8 - lavf 57.46.100 - avformat.h Add av_get_frame_filename2() 2016-07-09 - 775389f / 90f469a - lavc 57.50.100 / 57.20.0 - avcodec.h Add FF_PROFILE_H264_MULTIVIEW_HIGH and FF_PROFILE_H264_STEREO_HIGH. 2016-06-30 - c1c7e0ab - lavf 57.41.100 - avformat.h Moved codecpar field from AVStream to the end of the struct, so that the following private fields are in the same location as in FFmpeg 3.0 (lavf 57.25.100). 2016-06-30 - 042fb69d - lavu 55.28.100 - frame.h Moved hw_frames_ctx field from AVFrame to the end of the struct, so that the following private fields are in the same location as in FFmpeg 3.0 (lavu 55.17.103). 2016-06-29 - 1a751455 - lavfi 6.47.100 - avfilter.h Fix accidental ABI breakage in AVFilterContext. ABI was broken in 8688d3a, lavfi 6.42.100 and released as ffmpeg 3.1. Because of this, ffmpeg and ffplay built against lavfi>=6.42.100 will not be compatible with lavfi>=6.47.100. Potentially also affects other users of libavfilter if they are using one of the affected fields. -------- 8< --------- FFmpeg 3.1 was cut here -------- 8< --------- 2016-06-26 - 481f320 / 1c9e861 - lavu 55.27.100 / 55.13.0 - hwcontext.h Add av_hwdevice_ctx_create(). 2016-06-26 - b95534b / e47b8bb - lavc 57.48.101 / 57.19.1 - avcodec.h Adjust values for JPEG 2000 profiles. 2016-06-23 - 5d75e46 / db7968b - lavf 57.40.100 / 57.7.0 - avio.h Add AVIODataMarkerType, write_data_type, ignore_boundary_point and avio_write_marker. 2016-06-23 - abb3cc4 / 0c4468d - lavu 55.26.100 / 55.12.0 - opt.h Add av_stereo3d_type_name() and av_stereo3d_from_name(). 2016-06-22 - 3689efe / c46db38 - lavu 55.25.100 / 55.11.0 - hwcontext_dxva2.h Add new installed header with DXVA2-specific hwcontext definitions. 2016-04-27 - fb91871 - lavu 55.23.100 - log.h Add a new function av_log_format_line2() which returns number of bytes written to the target buffer. 2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h Add a new audio/video encoding and decoding API with decoupled input and output -- avcodec_send_packet(), avcodec_receive_frame(), avcodec_send_frame() and avcodec_receive_packet(). 2016-04-17 - af9cac1 / 33d1898 - lavc 57.35.100 / 57.15.0 - avcodec.h Add a new bitstream filtering API working with AVPackets. Deprecate the old bitstream filtering API. 2016-04-14 - 8688d3a / 07a844f - lavfi 6.42.100 / 6.3.0 - avfilter.h Add AVFilterContext.hw_device_ctx. 2016-04-14 - 28abb21 / 551c677 - lavu 55.22.100 / 55.9.0 - hwcontext_vaapi.h Add new installed header with VAAPI-specific hwcontext definitions. 2016-04-14 - afccfaf / b1f01e8 - lavu 55.21.100 / 55.7.0 - hwcontext.h Add AVHWFramesConstraints and associated API. 2016-04-11 - 6f69f7a / 9200514 - lavf 57.33.100 / 57.5.0 - avformat.h Add AVStream.codecpar, deprecate AVStream.codec. 2016-04-02 - e8a9b64 - lavu 55.20.100 - base64.h Add AV_BASE64_DECODE_SIZE(x) macro. 2016-xx-xx - lavc 57.33.100 / 57.14.0 - avcodec.h f9b1cf1 / 998e1b8 - Add AVCodecParameters and its related API. e6053b3 / a806834 - Add av_get_audio_frame_duration2(). 2016-03-11 - 6d8ab35 - lavf/lavc 57.28.101 Add requirement to bitstream filtering API that returned packets with size == 0 and side_data_elems == 0 are to be skipped by the caller. 2016-03-04 - 9362973 - lavf 57.28.100 Add protocol blacklisting API 2016-02-28 - 4dd4d53 - lavc 57.27.101 Validate AVFrame returned by get_buffer2 to have required planes not NULL and unused planes set to NULL as crashes and buffer overflow are possible with certain streams if that is not the case. 2016-02-26 - 30e7685 - lavc 57.27.100 - avcodec.h "flags2" decoding option now allows the flag "ass_ro_flush_noop" preventing the reset of the ASS ReadOrder field on flush. This affects the content of AVSubtitles.rects[N]->ass when "sub_text_format" is set to "ass" (see previous entry). 2016-02-26 - 2941282 - lavc 57.26.100 - avcodec.h Add a "sub_text_format" subtitles decoding option allowing the values "ass" (recommended) and "ass_with_timings" (not recommended, deprecated, default). The default value for this option will change to "ass" at the next major libavcodec version bump. The current default is "ass_with_timings" for compatibility. This means that all subtitles text decoders currently still output ASS with timings printed as strings in the AVSubtitles.rects[N]->ass fields. Setting "sub_text_format" to "ass" allows a better timing accuracy (ASS timing is limited to a 1/100 time base, so this is relevant for any subtitles format needing a bigger one), ease timing adjustments, and prevents the need of removing the timing from the decoded string yourself. This form is also known as "the Matroska form". The timing information (start time, duration) can be found in the AVSubtitles fields. 2016-02-24 - 7e49cdd / 7b3214d0 - lavc 57.25.100 / 57.13.0 - avcodec.h Add AVCodecContext.hw_frames_ctx. 2016-02-24 - 1042402 / b3dd30d - lavfi 6.36.100 / 6.2.0 - avfilter.h avfilter.h - Add AVFilterLink.hw_frames_ctx. buffersrc.h - Add AVBufferSrcParameters and functions for handling it. 2016-02-23 - 14f7a3d - lavc 57.25.100 Add AV_PKT_DATA_MPEGTS_STREAM_ID for exporting the MPEGTS stream ID. 2016-02-18 - 08acab8 - lavu 55.18.100 - audio_fifo.h Add av_audio_fifo_peek_at(). 2016-xx-xx - lavu 55.18.100 / 55.6.0 26abd51 / 721a4ef buffer.h - Add av_buffer_pool_init2(). 1a70878 / 89923e4 hwcontext.h - Add a new installed header hwcontext.h with a new API for handling hwaccel frames. 6992276 / ad884d1 hwcontext_cuda.h - Add a new installed header hwcontext_cuda.h with CUDA-specific hwcontext definitions. d779d8d / a001ce3 hwcontext_vdpau.h - Add a new installed header hwcontext_vdpau.h with VDPAU-specific hwcontext definitions. 63c3e35 / 7bc780c pixfmt.h - Add AV_PIX_FMT_CUDA. -------- 8< --------- FFmpeg 3.0 was cut here -------- 8< --------- 2016-02-10 - bc9a596 / 9f61abc - lavf 57.25.100 / 57.3.0 - avformat.h Add AVFormatContext.opaque, io_open and io_close, allowing custom IO 2016-02-01 - 1dba837 - lavf 57.24.100 - avformat.h, avio.h Add protocol_whitelist to AVFormatContext, AVIOContext 2016-01-31 - 66e9d2f - lavu 55.17.100 - frame.h Add AV_FRAME_DATA_GOP_TIMECODE for exporting MPEG1/2 GOP timecodes. 2016-01-01 - 5e8b053 / 2c68113 - lavc 57.21.100 / 57.12.0 - avcodec.h Add AVCodecDescriptor.profiles and avcodec_profile_name(). 2015-12-28 - 1f9139b - lavf 57.21.100 - avformat.h Add automatic bitstream filtering; add av_apply_bitstream_filters() 2015-12-22 - 39a09e9 - lavfi 6.21.101 - avfilter.h Deprecate avfilter_link_set_closed(). Applications are not supposed to mess with links, they should close the sinks. 2015-12-17 - lavc 57.18.100 / 57.11.0 - avcodec.h dirac.h xxxxxxx - Add av_packet_add_side_data(). xxxxxxx - Add AVCodecContext.coded_side_data. xxxxxxx - Add AVCPBProperties API. xxxxxxx - Add a new public header dirac.h containing av_dirac_parse_sequence_header() 2015-12-11 - 676a93f - lavf 57.20.100 - avformat.h Add av_program_add_stream_index() 2015-11-29 - 93fb4a4 - lavc 57.16.101 - avcodec.h Deprecate rtp_callback without replacement, i.e. it won't be possible to get image slices before the full frame is encoded any more. The libavformat rtpenc muxer can still be used for RFC-2190 packetization. 2015-11-22 - fe20e34 - lavc 57.16.100 - avcodec.h Add AV_PKT_DATA_FALLBACK_TRACK for making fallback associations between streams. 2015-11-22 - ad317c9 - lavf 57.19.100 - avformat.h Add av_stream_new_side_data(). 2015-11-22 - e12f403 - lavu 55.8.100 - xtea.h Add av_xtea_le_init and av_xtea_le_crypt 2015-11-18 - lavu 55.7.100 - mem.h Add av_fast_mallocz() 2015-10-29 - lavc 57.12.100 / 57.8.0 - avcodec.h xxxxxx - Deprecate av_free_packet(). Use av_packet_unref() as replacement, it resets the packet in a more consistent way. xxxxxx - Deprecate av_dup_packet(), it is a no-op for most cases. Use av_packet_ref() to make a non-refcounted AVPacket refcounted. xxxxxx - Add av_packet_alloc(), av_packet_clone(), av_packet_free(). They match the AVFrame functions with the same name. 2015-10-27 - 1e477a9 - lavu 55.5.100 - cpu.h Add AV_CPU_FLAG_AESNI. 2015-10-22 - ee573b4 / a17a766 - lavc 57.9.100 / 57.5.0 - avcodec.h Add data and linesize array to AVSubtitleRect, to be used instead of the ones from the embedded AVPicture. 2015-10-22 - 866a417 / dc923bc - lavc 57.8.100 / 57.0.0 - qsv.h Add an API for allocating opaque surfaces. 2015-10-15 - 2c2d162 - lavf 57.4.100 Remove the latm demuxer that was a duplicate of the loas demuxer. 2015-10-14 - b994788 / 11c5f43 - lavu 55.4.100 / 55.2.0 - dict.h Change return type of av_dict_copy() from void to int, so that a proper error code can be reported. 2015-09-29 - b01891a / 948f3c1 - lavc 57.3.100 / 57.2.0 - avcodec.h Change type of AVPacket.duration from int to int64_t. 2015-09-17 - 7c46f24 / e3d4784 - lavc 57.3.100 / 57.2.0 - d3d11va.h Add av_d3d11va_alloc_context(). This function must from now on be used for allocating AVD3D11VAContext. 2015-09-15 - lavf 57.2.100 - avformat.h probesize and max_analyze_duration switched to 64bit, both are only accessible through AVOptions 2015-09-15 - lavf 57.1.100 - avformat.h bit_rate was changed to 64bit, make sure you update any printf() or other type sensitive code 2015-09-15 - lavc 57.2.100 - avcodec.h bit_rate/rc_max_rate/rc_min_rate were changed to 64bit, make sure you update any printf() or other type sensitive code 2015-09-07 - lavu 55.0.100 / 55.0.0 c734b34 / b8b5d82 - Change type of AVPixFmtDescriptor.flags from uint8_t to uint64_t. f53569a / 6b3ef7f - Change type of AVComponentDescriptor fields from uint16_t to int and drop bit packing. 151aa2e / 2268db2 - Add step, offset, and depth to AVComponentDescriptor to replace the deprecated step_minus1, offset_plus1, and depth_minus1. -------- 8< --------- FFmpeg 2.8 was cut here -------- 8< --------- 2015-08-27 - 1dd854e1 - lavc 56.58.100 - vaapi.h Deprecate old VA-API context (vaapi_context) fields that were only set and used by libavcodec. They are all managed internally now. 2015-08-19 - 9f8e57ef - lavu 54.31.100 - pixfmt.h Add a unique pixel format for VA-API (AV_PIX_FMT_VAAPI) that indicates the nature of the underlying storage: a VA surface. This yields the same value as AV_PIX_FMT_VAAPI_VLD. Deprecate old VA-API related pixel formats: AV_PIX_FMT_VAAPI_MOCO, AV_PIX_FMT_VAAPI_IDCT, AV_PIX_FMT_VAAPI_VLD. 2015-08-02 - lavu 54.30.100 / 54.17.0 9ed59f1 / 7a7df34c - Add av_blowfish_alloc(). a130ec9 / ae365453 - Add av_rc4_alloc(). 9ca1997 / 5d8bea3b - Add av_xtea_alloc(). 3cf08e9 / d9e8b47e - Add av_des_alloc(). 2015-07-27 - lavc 56.56.100 / 56.35.0 - avcodec.h 94d68a4 / 7c6eb0a1 - Rename CODEC_FLAG* defines to AV_CODEC_FLAG*. 444e987 / def97856 - Rename CODEC_CAP_* defines to AV_CODEC_CAP_*. 29d147c / 059a9348 - Rename FF_INPUT_BUFFER_PADDING_SIZE and FF_MIN_BUFFER_SIZE to AV_INPUT_BUFFER_PADDING_SIZE and AV_INPUT_BUFFER_MIN_SIZE. 2015-07-22 - c40ecff - lavc 56.51.100 - avcodec.h Add AV_PKT_DATA_QUALITY_STATS to export the quality value, PSNR, and pict_type of an AVPacket. 2015-07-16 - 8dad213 - lavc 56.49.100 Add av_codec_get_codec_properties(), FF_CODEC_PROPERTY_LOSSLESS and FF_CODEC_PROPERTY_CLOSED_CAPTIONS 2015-07-03 - d563e13 / 83212943 - lavu 54.28.100 / 56.15.0 Add av_version_info(). -------- 8< --------- FFmpeg 2.7 was cut here -------- 8< --------- 2015-06-04 - cc17b43 - lswr 1.2.100 Add swr_get_out_samples() 2015-05-27 - c312bfa - lavu 54.26.100 - cpu.h Add AV_CPU_FLAG_AVXSLOW. 2015-05-26 - 1fb9b2a - lavu 54.25.100 - rational.h Add av_q2intfloat(). 2015-05-13 - cc48409 / e7c5e17 - lavc 56.39.100 / 56.23.0 Add av_vda_default_init2. 2015-05-11 - 541d75f - lavf 56.33.100 - avformat.h Add AVOpenCallback AVFormatContext.open_cb 2015-05-07 - a7dd933 - 56.38.100 - avcodec.h Add av_packet_side_data_name(). 2015-05-07 - 01e59d4 - 56.37.102 - avcodec.h Add FF_PROFILE_VP9_2 and FF_PROFILE_VP9_3. 2015-05-04 - 079b7f6 - 56.37.100 - avcodec.h Add FF_PROFILE_VP9_0 and FF_PROFILE_VP9_1. 2015-04-22 - 748d481 - lavf 56.31.100 - avformat.h Add AVFMT_FLAG_FAST_SEEK flag. Some formats (initially mp3) use it to enable fast, but inaccurate seeking. 2015-04-20 - 8e8219e / c253340 - lavu 54.23.100 / 54.12.0 - log.h Add AV_LOG_TRACE for extremely verbose debugging. 2015-04-02 - 26e0e393 - lavf 56.29.100 - avio.h Add AVIODirEntryType.AVIO_ENTRY_SERVER. Add AVIODirEntryType.AVIO_ENTRY_SHARE. Add AVIODirEntryType.AVIO_ENTRY_WORKGROUP. 2015-03-31 - 3188696 - lavu 54.22.100 - avstring.h Add av_append_path_component() 2015-03-27 - 184084c - lavf 56.27.100 - avio.h url.h New directory listing API. Add AVIODirEntryType enum. Add AVIODirEntry, AVIODirContext structures. Add avio_open_dir(), avio_read_dir(), avio_close_dir(), avio_free_directory_entry(). Add ff_alloc_dir_entry(). Extend URLProtocol with url_open_dir(), url_read_dir(), url_close_dir(). 2015-03-29 - 268ff17 / c484561 - lavu 54.21.100 / 54.10.0 - pixfmt.h Add AV_PIX_FMT_MMAL for MMAL hardware acceleration. 2015-03-19 - 11fe56c - 56.29.100 / lavc 56.22.0 Add FF_PROFILE_DTS_EXPRESS. -------- 8< --------- FFmpeg 2.6 was cut here -------- 8< --------- 2015-03-04 - cca4476 - lavf 56.25.100 Add avformat_flush() 2015-03-03 - 81a9126 - lavf 56.24.100 Add avio_put_str16be() 2015-02-19 - 560eb71 / 31d2039 - lavc 56.23.100 / 56.13.0 Add width, height, coded_width, coded_height and format to AVCodecParserContext. 2015-02-19 - e375511 / 5b1d9ce - lavu 54.19.100 / 54.9.0 Add AV_PIX_FMT_QSV for QSV hardware acceleration. 2015-02-14 - ba22295 - lavc 56.21.102 Deprecate VIMA decoder. 2015-01-27 - 62a82c6 / 728685f - lavc 56.21.100 / 56.12.0, lavu 54.18.100 / 54.8.0 - avcodec.h, frame.h Add AV_PKT_DATA_AUDIO_SERVICE_TYPE and AV_FRAME_DATA_AUDIO_SERVICE_TYPE for storing the audio service type as side data. 2015-01-16 - a47c933 - lavf 56.19.100 - avformat.h Add data_codec and data_codec_id for storing codec of data stream 2015-01-11 - 007c33d - lavd 56.4.100 - avdevice.h Add avdevice_list_input_sources(). Add avdevice_list_output_sinks(). 2014-12-25 - d7aaeea / c220a60 - lavc 56.19.100 / 56.10.0 - vdpau.h Add av_vdpau_get_surface_parameters(). 2014-12-25 - ddb9a24 / 6c99c92 - lavc 56.18.100 / 56.9.0 - avcodec.h Add AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH flag to av_vdpau_bind_context(). 2014-12-25 - d16079a / 57b6704 - lavc 56.17.100 / 56.8.0 - avcodec.h Add AVCodecContext.sw_pix_fmt. 2014-12-04 - 6e9ac02 - lavc 56.14.100 - dv_profile.h Add av_dv_codec_profile2(). -------- 8< --------- FFmpeg 2.5 was cut here -------- 8< --------- 2014-11-21 - ab922f9 - lavu 54.15.100 - dict.h Add av_dict_get_string(). 2014-11-18 - a54a51c - lavu 54.14.100 - float_dsp.h Add avpriv_float_dsp_alloc(). 2014-11-16 - 6690d4c3 - lavf 56.13.100 - avformat.h Add AVStream.recommended_encoder_configuration with accessors. 2014-11-16 - bee5844d - lavu 54.13.100 - opt

ffmpeg原始碼簡析（十三）ffmpeg API變更 2009-03-01—— 2017-05-09變更

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