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  1. Never assume the API of libav* to be stable unless at least 1 month has passed
  2. since the last major version increase or the API was added.
  3.  
  4. The last version increases were:
  5. libavcodec:    2013-03-xx
  6. libavdevice:   2013-03-xx
  7. libavfilter:   2012-06-22
  8. libavformat:   2013-03-xx
  9. libavresample: 2012-10-05
  10. libpostproc:   2011-04-18
  11. libswresample: 2011-09-19
  12. libswscale:    2011-06-20
  13. libavutil:     2012-10-22
  14.  
  15.  
  16. API changes, most recent first:
  17.  
  18. 2013-10-27 - xxxxxxx - lavc 55.39.100 - avcodec.h
  19.   Add CODEC_CAP_DELAY support to avcodec_decode_subtitle2.
  20.  
  21. 2013-10-27 - xxxxxxx - lavu 52.48.100 - parseutils.h
  22.   Add av_get_known_color_name().
  23.  
  24. 2013-10-17 - xxxxxxx - lavu 52.47.100 - opt.h
  25.   Add AV_OPT_TYPE_CHANNEL_LAYOUT and channel layout option handlers
  26.   av_opt_get_channel_layout() and av_opt_set_channel_layout().
  27.  
  28. 2013-10-xx - xxxxxxx -libswscale 2.5.101 - options.c
  29.   Change default scaler to bicubic
  30.  
  31. 2013-10-03 - xxxxxxx - lavc 55.34.100 - avcodec.h
  32.   Add av_codec_get_max_lowres()
  33.  
  34. 2013-10-02 - xxxxxxx - lavf 55.19.100 - avformat.h
  35.   Add audio/video/subtitle AVCodec fields to AVFormatContext to force specific
  36.   decoders
  37.  
  38. 2013-08-xx - xxxxxxx - lavfi 3.11.0 - avfilter.h
  39.   Add AVFilterGraph.execute and AVFilterGraph.opaque for custom slice threading
  40.   implementations.
  41.  
  42. 2013-09-21 - xxxxxxx - lavu 52.16.0 - pixfmt.h
  43.   Add interleaved 4:2:2 8/10-bit formats AV_PIX_FMT_NV16 and
  44.   AV_PIX_FMT_NV20.
  45.  
  46. 2013-09-16 - c74c3fb / 3feb3d6 - lavu 52.44.100 / 52.15.0 - mem.h
  47.   Add av_reallocp.
  48.  
  49. 2013-09-04 - 3e1f507 - lavc 55.31.101 - avcodec.h
  50.   avcodec_close() argument can be NULL.
  51.  
  52. 2013-09-04 - 36cd017 - lavf 55.16.101 - avformat.h
  53.   avformat_close_input() argument can be NULL and point on NULL.
  54.  
  55. 2013-08-29 - e31db62 - lavf 55.15.100 - avformat.h
  56.   Add av_format_get_probe_score().
  57.  
  58. 2013-08-15 - 1e0e193 - lsws 2.5.100 -
  59.   Add a sws_dither AVOption, allowing to set the dither algorithm used
  60.  
  61. 2013-08-xx - xxxxxxx - lavc 55.27.100 - vdpau.h
  62.   Add a render2 alternative to the render callback function.
  63.  
  64. 2013-08-xx - xxxxxxx - lavc 55.26.100 - vdpau.h
  65.   Add allocation function for AVVDPAUContext, allowing
  66.   to extend it in the future without breaking ABI/API.
  67.  
  68. 2013-08-10 - 67a580f / 5a9a9d4 - lavc 55.25.100 / 55.16.0 - avcodec.h
  69.   Extend AVPacket API with av_packet_unref, av_packet_ref,
  70.   av_packet_move_ref, av_packet_copy_props, av_packet_free_side_data.
  71.  
  72. 2013-08-05 - 9547e3e / f824535 - lavc 55.22.100 / 55.13.0 - avcodec.h
  73.   Deprecate the bitstream-related members from struct AVVDPAUContext.
  74.   The bistream buffers no longer need to be explicitly freed.
  75.  
  76. 2013-08-05 - 3b805dc / 549294f - lavc 55.21.100 / 55.12.0 - avcodec.h
  77.   Deprecate the CODEC_CAP_HWACCEL_VDPAU codec capability. Use CODEC_CAP_HWACCEL
  78.   and select the AV_PIX_FMT_VDPAU format with get_format() instead.
  79.  
  80. 2013-08-05 - 4ee0984 / a0ad5d0 - lavu 52.41.100 / 52.14.0 - pixfmt.h
  81.   Deprecate AV_PIX_FMT_VDPAU_*. Use AV_PIX_FMT_VDPAU instead.
  82.  
  83. 2013-08-02 - 82fdfe8 / a8b1927 - lavc 55.20.100 / 55.11.0 - avcodec.h
  84.   Add output_picture_number to AVCodecParserContext.
  85.  
  86. 2013-07-23 - abc8110 - lavc 55.19.100 - avcodec.h
  87.   Add avcodec_chroma_pos_to_enum()
  88.   Add avcodec_enum_to_chroma_pos()
  89.  
  90. 2013-07-03 - 838bd73 - lavfi 3.78.100 - avfilter.h
  91.   Deprecate avfilter_graph_parse() in favor of the equivalent
  92.   avfilter_graph_parse_ptr().
  93.  
  94. 2013-06-24 - af5f9c0 / 95d5246 - lavc 55.17.100 / 55.10.0 - avcodec.h
  95.   Add MPEG-2 AAC profiles
  96.  
  97. 2013-06-25 - af5f9c0 / 95d5246 - lavf 55.10.100 - avformat.h
  98.   Add AV_DISPOSITION_* flags to indicate text track kind.
  99.  
  100. 2013-06-15 - 99b8cd0 - lavu 52.36.100
  101.   Add AVRIPEMD:
  102.    av_ripemd_alloc()
  103.    av_ripemd_init()
  104.    av_ripemd_update()
  105.    av_ripemd_final()
  106.  
  107. 2013-06-04 - 30b491f / fc962d4 - lavu 52.35.100 / 52.13.0 - mem.h
  108.   Add av_realloc_array and av_reallocp_array
  109.  
  110. 2013-05-30 - 682b227 - lavu 52.35.100
  111.   Add AVSHA512:
  112.    av_sha512_alloc()
  113.    av_sha512_init()
  114.    av_sha512_update()
  115.    av_sha512_final()
  116.  
  117. 2013-05-24 - 8d4e969 / 129bb23 - lavfi 3.10.0 / 3.70.100 - avfilter.h
  118.   Add support for slice multithreading to lavfi. Filters supporting threading
  119.   are marked with AVFILTER_FLAG_SLICE_THREADS.
  120.   New fields AVFilterContext.thread_type, AVFilterGraph.thread_type and
  121.   AVFilterGraph.nb_threads (accessible directly or through AVOptions) may be
  122.   used to configure multithreading.
  123.  
  124. 2013-05-24 - fe40a9f / 2a6eaea - lavu 52.12.0 / 52.34.100 - cpu.h
  125.   Add av_cpu_count() function for getting the number of logical CPUs.
  126.  
  127. 2013-05-24 - 0c25c39 / b493847 - lavc 55.7.0 / 55.12.100 - avcodec.h
  128.   Add picture_structure to AVCodecParserContext.
  129.  
  130. 2013-05-17 - 3a751ea - lavu 52.33.100 - opt.h
  131.   Add AV_OPT_TYPE_COLOR value to AVOptionType enum.
  132.  
  133. 2013-05-13 - e398416 - lavu 52.31.100 - mem.h
  134.   Add av_dynarray2_add().
  135.  
  136. 2013-05-12 - 1776177 - lavfi 3.65.100
  137.   Add AVFILTER_FLAG_SUPPORT_TIMELINE* filter flags.
  138.  
  139. 2013-04-19 - 380cfce - lavc 55.4.100
  140.   Add AV_CODEC_PROP_TEXT_SUB property for text based subtitles codec.
  141.  
  142. 2013-04-18 - 7c1a002 - lavf 55.3.100
  143.   The matroska demuxer can now output proper verbatim ASS packets. It will
  144.   become the default starting lavf 56.0.100.
  145.  
  146. 2013-04-10 - af0d270 - lavu 25.26.100 - avutil.h,opt.h
  147.   Add av_int_list_length()
  148.   and av_opt_set_int_list().
  149.  
  150. 2013-03-30 - 5c73645 - lavu 52.24.100 - samplefmt.h
  151.   Add av_samples_alloc_array_and_samples().
  152.  
  153. 2013-03-29 - ef7b6b4 - lavf 55.1.100 - avformat.h
  154.   Add av_guess_frame_rate()
  155.  
  156. 2013-03-20 - 8d928a9 - lavu 52.22.100 - opt.h
  157.   Add AV_OPT_TYPE_DURATION value to AVOptionType enum.
  158.  
  159. 2013-03-17 - 7aa9af5 - lavu 52.20.100 - opt.h
  160.   Add AV_OPT_TYPE_VIDEO_RATE value to AVOptionType enum.
  161.  
  162. 2013-03-07 - 9767ec6 - lavu 52.18.100 - avstring.h,bprint.h
  163.   Add av_escape() and av_bprint_escape() API.
  164.  
  165. 2013-02-24 - b59cd08 - lavfi 3.41.100 - buffersink.h
  166.   Add sample_rates field to AVABufferSinkParams.
  167.  
  168. 2013-01-17 - a1a707f - lavf 54.61.100
  169.   Add av_codec_get_tag2().
  170.  
  171. 2013-01-01 - 2eb2e17 - lavfi 3.34.100
  172.   Add avfilter_get_audio_buffer_ref_from_arrays_channels.
  173.  
  174. 2012-12-20 - 34de47aa - lavfi 3.29.100 - avfilter.h
  175.   Add AVFilterLink.channels, avfilter_link_get_channels()
  176.   and avfilter_ref_get_channels().
  177.  
  178. 2012-12-15 - 96d815fc - lavc 54.80.100 - avcodec.h
  179.   Add pkt_size field to AVFrame.
  180.  
  181. 2012-11-25 - c70ec631 - lavu 52.9.100 - opt.h
  182.   Add the following convenience functions to opt.h:
  183.    av_opt_get_image_size
  184.    av_opt_get_pixel_fmt
  185.    av_opt_get_sample_fmt
  186.    av_opt_set_image_size
  187.    av_opt_set_pixel_fmt
  188.    av_opt_set_sample_fmt
  189.  
  190. 2012-11-17 - 4cd74c81 - lavu 52.8.100 - bprint.h
  191.   Add av_bprint_strftime().
  192.  
  193. 2012-11-15 - 92648107 - lavu 52.7.100 - opt.h
  194.   Add av_opt_get_key_value().
  195.  
  196. 2012-11-13 - 79456652 - lavfi 3.23.100 - avfilter.h
  197.   Add channels field to AVFilterBufferRefAudioProps.
  198.  
  199. 2012-11-03 - 481fdeee - lavu 52.3.100 - opt.h
  200.   Add AV_OPT_TYPE_SAMPLE_FMT value to AVOptionType enum.
  201.  
  202. 2012-10-21 - 6fb2fd8 - lavc  54.68.100 - avcodec.h
  203.                        lavfi  3.20.100 - avfilter.h
  204.   Add AV_PKT_DATA_STRINGS_METADATA side data type, used to transmit key/value
  205.   strings between AVPacket and AVFrame, and add metadata field to
  206.   AVCodecContext (which shall not be accessed by users; see AVFrame metadata
  207.   instead).
  208.  
  209. 2012-09-27 - a70b493 - lavd 54.3.100 - version.h
  210.   Add LIBAVDEVICE_IDENT symbol.
  211.  
  212. 2012-09-27 - a70b493 - lavfi 3.18.100 - version.h
  213.   Add LIBAVFILTER_IDENT symbol.
  214.  
  215. 2012-09-27 - a70b493 - libswr 0.16.100 - version.h
  216.   Add LIBSWRESAMPLE_VERSION, LIBSWRESAMPLE_BUILD
  217.   and LIBSWRESAMPLE_IDENT symbols.
  218.  
  219. 2012-09-06 - 29e972f - lavu 51.72.100 - parseutils.h
  220.   Add av_small_strptime() time parsing function.
  221.  
  222.   Can be used as a stripped-down replacement for strptime(), on
  223.   systems which do not support it.
  224.  
  225. 2012-08-25 - 2626cc4 - lavf 54.28.100
  226.   Matroska demuxer now identifies SRT subtitles as AV_CODEC_ID_SUBRIP instead
  227.   of AV_CODEC_ID_TEXT.
  228.  
  229. 2012-08-13 - 5c0d8bc - lavfi 3.8.100 - avfilter.h
  230.   Add avfilter_get_class() function, and priv_class field to AVFilter
  231.   struct.
  232.  
  233. 2012-08-12 - a25346e - lavu 51.69.100 - opt.h
  234.   Add AV_OPT_FLAG_FILTERING_PARAM symbol in opt.h.
  235.  
  236. 2012-07-31 - 23fc4dd - lavc 54.46.100
  237.   Add channels field to AVFrame.
  238.  
  239. 2012-07-30 - f893904 - lavu 51.66.100
  240.   Add av_get_channel_description()
  241.   and av_get_standard_channel_layout() functions.
  242.  
  243. 2012-07-21 - 016a472 - lavc 54.43.100
  244.   Add decode_error_flags field to AVFrame.
  245.  
  246. 2012-07-20 - b062936 - lavf 54.18.100
  247.   Add avformat_match_stream_specifier() function.
  248.  
  249. 2012-07-14 - f49ec1b - lavc 54.38.100 - avcodec.h
  250.   Add metadata to AVFrame, and the accessor functions
  251.   av_frame_get_metadata() and av_frame_set_metadata().
  252.  
  253. 2012-07-10 - 0e003d8 - lavc 54.33.100
  254.   Add av_fast_padded_mallocz().
  255.  
  256. 2012-07-10 - 21d5609 - lavfi 3.2.0 - avfilter.h
  257.   Add init_opaque() callback to AVFilter struct.
  258.  
  259. 2012-06-26 - e6674e4 - lavu 51.63.100 - imgutils.h
  260.   Add functions to libavutil/imgutils.h:
  261.   av_image_get_buffer_size()
  262.   av_image_fill_arrays()
  263.   av_image_copy_to_buffer()
  264.  
  265. 2012-06-24 - c41899a - lavu 51.62.100 - version.h
  266.   version moved from avutil.h to version.h
  267.  
  268. 2012-04-11 - 359abb1 - lavu 51.58.100 - error.h
  269.   Add av_make_error_string() and av_err2str() utilities to
  270.   libavutil/error.h.
  271.  
  272. 2012-06-05 - 62b39d4 - lavc 54.24.100
  273.   Add pkt_duration field to AVFrame.
  274.  
  275. 2012-05-24 - f2ee065 - lavu 51.54.100
  276.   Move AVPALETTE_SIZE and AVPALETTE_COUNT macros from
  277.   libavcodec/avcodec.h to libavutil/pixfmt.h.
  278.  
  279. 2012-05-14 - 94a9ac1 - lavf 54.5.100
  280.   Add av_guess_sample_aspect_ratio() function.
  281.  
  282. 2012-04-20 - 65fa7bc - lavfi 2.70.100
  283.   Add avfilter_unref_bufferp() to avfilter.h.
  284.  
  285. 2012-04-13 - 162e400 - lavfi 2.68.100
  286.   Install libavfilter/asrc_abuffer.h public header.
  287.  
  288. 2012-03-26 - a67d9cf - lavfi 2.66.100
  289.   Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
  290.  
  291. 2013-05-15 - ff46809 / e6c4ac7 - lavu 52.32.100 / 52.11.0 - pixdesc.h
  292.   Replace PIX_FMT_* flags with AV_PIX_FMT_FLAG_*.
  293.  
  294. 2013-04-03 - 6fc58a8 / 507b1e4 - lavc 55.7.100 / 55.4.0 - avcodec.h
  295.   Add field_order to AVCodecParserContext.
  296.  
  297. 2013-04-19 - f4b05cd / 5e83d9a - lavc 55.5.100 / 55.2.0 - avcodec.h
  298.   Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
  299.  
  300. 2013-04-11 - lavfi 3.53.100 / 3.8.0
  301.   231fd44 / 38f0c07 - Move all content from avfiltergraph.h to avfilter.h. Deprecate
  302.             avfilterhraph.h, user applications should include just avfilter.h
  303.   86070b8 / bc1a985 - Add avfilter_graph_alloc_filter(), deprecate avfilter_open() and
  304.             avfilter_graph_add_filter().
  305.   4fde705 / 1113672 - Add AVFilterContext.graph pointing to the AVFilterGraph that contains the
  306.             filter.
  307.   710b0aa / 48a5ada - Add avfilter_init_str(), deprecate avfilter_init_filter().
  308.   46de9ba / 1ba95a9 - Add avfilter_init_dict().
  309.   16fc24b / 7cdd737 - Add AVFilter.flags field and AVFILTER_FLAG_DYNAMIC_{INPUTS,OUTPUTS} flags.
  310.   f4db6bf / 7e8fe4b - Add avfilter_pad_count() for counting filter inputs/outputs.
  311.   835cc0f / fa2a34c - Add avfilter_next(), deprecate av_filter_next().
  312.             Deprecate avfilter_uninit().
  313.  
  314. 2013-04-09 - lavfi 3.51.100 / 3.7.0 - avfilter.h
  315.   0594ef0 / b439c99 - Add AVFilter.priv_class for exporting filter options through the
  316.             AVOptions API in the similar way private options work in lavc and lavf.
  317.   44d4488 / 8114c10 - Add avfilter_get_class().
  318.   Switch all filters to use AVOptions.
  319.  
  320. 2013-03-19 - 17ebef2 / 2c328a9 - lavu 52.20.100 / 52.9.0 - pixdesc.h
  321.   Add av_pix_fmt_count_planes() function for counting planes in a pixel format.
  322.  
  323. 2013-03-16 - ecade98 / 42c7c61 - lavfi 3.47.100 / 3.6.0
  324.   Add AVFilterGraph.nb_filters, deprecate AVFilterGraph.filter_count.
  325.  
  326. 2013-03-08 - Reference counted buffers - lavu 52.8.0, lavc 55.0.100 / 55.0.0, lavf 55.0.100 / 55.0.0,
  327. lavd 54.4.100 / 54.0.0, lavfi 3.5.0
  328.   36099df / 8e401db, 532f31a / 1cec062 - add a new API for reference counted buffers and buffer
  329.                      pools (new header libavutil/buffer.h).
  330.   2653e12 / 1afddbe - add AVPacket.buf to allow reference counting for the AVPacket data.
  331.             Add av_packet_from_data() function for constructing packets from
  332.             av_malloc()ed data.
  333.   c4e8821 / 7ecc2d4 - move AVFrame from lavc to lavu (new header libavutil/frame.h), add
  334.             AVFrame.buf/extended_buf to allow reference counting for the AVFrame
  335.             data. Add new API for working with reference-counted AVFrames.
  336.   80e9e63 / 759001c - add the refcounted_frames field to AVCodecContext to make audio and
  337.             video decoders return reference-counted frames. Add get_buffer2()
  338.             callback to AVCodecContext which allocates reference-counted frames.
  339.             Add avcodec_default_get_buffer2() as the default get_buffer2()
  340.             implementation.
  341.             Deprecate AVCodecContext.get_buffer() / release_buffer() /
  342.             reget_buffer(), avcodec_default_get_buffer(),
  343.             avcodec_default_reget_buffer(), avcodec_default_release_buffer().
  344.             Remove avcodec_default_free_buffers(), which should not have ever
  345.             been called from outside of lavc.
  346.             Deprecate the following AVFrame fields:
  347.                 * base -- is now stored in AVBufferRef
  348.                 * reference, type, buffer_hints -- are unnecessary in the new API
  349.                 * hwaccel_picture_private, owner, thread_opaque -- should not
  350.                   have been acessed from outside of lavc
  351.                 * qscale_table, qstride, qscale_type, mbskip_table, motion_val,
  352.                   mb_type, dct_coeff, ref_index -- mpegvideo-specific tables,
  353.                   which are not exported anymore.
  354.   a05a44e / 7e35037 - switch libavfilter to use AVFrame instead of AVFilterBufferRef. Add
  355.             av_buffersrc_add_frame(), deprecate av_buffersrc_buffer().
  356.             Add av_buffersink_get_frame() and av_buffersink_get_samples(),
  357.             deprecate av_buffersink_read() and av_buffersink_read_samples().
  358.             Deprecate AVFilterBufferRef and all functions for working with it.
  359.  
  360. 2013-03-17 - 6c17ff8 / 12c5c1d - lavu 52.19.100 / 52.8.0 - avstring.h
  361.   Add av_isdigit, av_isgraph, av_isspace, av_isxdigit.
  362.  
  363. 2013-02-23 - 71cf094 / 9f12235 - lavfi 3.40.100 / 3.4.0 - avfiltergraph.h
  364.   Add resample_lavr_opts to AVFilterGraph for setting libavresample options
  365.   for auto-inserted resample filters.
  366.  
  367. 2013-01-25 - e7e14bc / 38c1466 - lavu 52.17.100 / 52.7.0 - dict.h
  368.   Add av_dict_parse_string() to set multiple key/value pairs at once from a
  369.   string.
  370.  
  371. 2013-01-25 - 25be630 / b85a5e8 - lavu 52.16.100 / 52.6.0 - avstring.h
  372.   Add av_strnstr()
  373.  
  374. 2013-01-15 - e7e0186 / 8ee288d - lavu 52.15.100 / 52.5.0 - hmac.h
  375.   Add AVHMAC.
  376.  
  377. 2013-01-13 - 8ee7b38 / 44e065d - lavc 54.87.100 / 54.36.0 - vdpau.h
  378.   Add AVVDPAUContext struct for VDPAU hardware-accelerated decoding.
  379.  
  380. 2013-01-12 - dae382b / 169fb94 - lavu 52.14.100 / 52.4.0 - pixdesc.h
  381.   Add AV_PIX_FMT_VDPAU flag.
  382.  
  383. 2013-01-07 - 249fca3 / 074a00d - lavr 1.1.0
  384.   Add avresample_set_channel_mapping() for input channel reordering,
  385.   duplication, and silencing.
  386.  
  387. 2012-12-29 - 2ce43b3 / d8fd06c - lavu 52.13.100 / 52.3.0 - avstring.h
  388.   Add av_basename() and av_dirname().
  389.  
  390. 2012-11-11 - 03b0787 / 5980f5d - lavu 52.6.100 / 52.2.0 - audioconvert.h
  391.   Rename audioconvert.h to channel_layout.h. audioconvert.h is now deprecated.
  392.  
  393. 2012-11-05 - 7d26be6 / dfde8a3 - lavu 52.5.100 / 52.1.0 - intmath.h
  394.   Add av_ctz() for trailing zero bit count
  395.  
  396. 2012-10-21 - e3a91c5 / a893655 - lavu 51.77.100 / 51.45.0 - error.h
  397.   Add AVERROR_EXPERIMENTAL
  398.  
  399. 2012-10-12 - a33ed6b / d2fcb35 - lavu 51.76.100 / 51.44.0 - pixdesc.h
  400.   Add functions for accessing pixel format descriptors.
  401.   Accessing the av_pix_fmt_descriptors array directly is now
  402.   deprecated.
  403.  
  404. 2012-10-11 - f391e40 / 9a92aea - lavu 51.75.100 / 51.43.0 - aes.h, md5.h, sha.h, tree.h
  405.   Add functions for allocating the opaque contexts for the algorithms,
  406.  
  407. 2012-10-10 - de31814 / b522000 - lavf 54.32.100 / 54.18.0 - avio.h
  408.   Add avio_closep to complement avio_close.
  409.  
  410. 2012-10-08 - ae77266 / 78071a1 - lavu 51.74.100 / 51.42.0 - pixfmt.h
  411.   Rename PixelFormat to AVPixelFormat and all PIX_FMT_* to AV_PIX_FMT_*.
  412.   To provide backwards compatibility, PixelFormat is now #defined as
  413.   AVPixelFormat.
  414.   Note that this can break user code that includes pixfmt.h and uses the
  415.   'PixelFormat' identifier. Such code should either #undef PixelFormat
  416.   or stop using the PixelFormat name.
  417.  
  418. 2012-10-05 - 55c49af / e7ba5b1 - lavr 1.0.0 - avresample.h
  419.   Data planes parameters to avresample_convert() and
  420.   avresample_read() are now uint8_t** instead of void**.
  421.   Libavresample is now stable.
  422.  
  423. 2012-09-24 - 46a3595 / a42aada - lavc 54.59.100 / 54.28.0 - avcodec.h
  424.   Add avcodec_free_frame(). This function must now
  425.   be used for freeing an AVFrame.
  426.  
  427. 2012-09-12 - e3e09f2 / 8919fee - lavu 51.73.100 / 51.41.0 - audioconvert.h
  428.   Added AV_CH_LOW_FREQUENCY_2 channel mask value.
  429.  
  430. 2012-09-04 - b21b5b0 / 686a329 - lavu 51.71.100 / 51.40.0 - opt.h
  431.   Reordered the fields in default_val in AVOption, changed which
  432.   default_val field is used for which AVOptionType.
  433.  
  434. 2012-08-30 - 98298eb / a231832 - lavc 54.54.101 / 54.26.1 - avcodec.h
  435.   Add codec descriptor properties AV_CODEC_PROP_LOSSY and
  436.   AV_CODEC_PROP_LOSSLESS.
  437.  
  438. 2012-08-18 - lavc 54.26 - avcodec.h
  439.   Add codec descriptors for accessing codec properties without having
  440.   to refer to a specific decoder or encoder.
  441.  
  442.   f5f3684 / c223d79 - Add an AVCodecDescriptor struct and functions
  443.             avcodec_descriptor_get() and avcodec_descriptor_next().
  444.   f5f3684 / 51efed1 - Add AVCodecDescriptor.props and AV_CODEC_PROP_INTRA_ONLY.
  445.   6c180b3 / 91e59fe - Add avcodec_descriptor_get_by_name().
  446.  
  447. 2012-08-08 - f5f3684 / 987170c - lavu 51.68.100 / 51.38.0 - dict.h
  448.   Add av_dict_count().
  449.  
  450. 2012-08-07 - 7a72695 / 104e10f - lavc 54.51.100 / 54.25.0 - avcodec.h
  451.   Rename CodecID to AVCodecID and all CODEC_ID_* to AV_CODEC_ID_*.
  452.   To provide backwards compatibility, CodecID is now #defined as AVCodecID.
  453.   Note that this can break user code that includes avcodec.h and uses the
  454.   'CodecID' identifier. Such code should either #undef CodecID or stop using the
  455.   CodecID name.
  456.  
  457. 2012-08-03 - e776ee8 / 239fdf1 - lavu 51.66.101 / 51.37.1 - cpu.h
  458.                        lsws 2.1.1   - swscale.h
  459.   Rename AV_CPU_FLAG_MMX2  ---> AV_CPU_FLAG_MMXEXT.
  460.   Rename SWS_CPU_CAPS_MMX2 ---> SWS_CPU_CAPS_MMXEXT.
  461.  
  462. 2012-07-29 - 7c26761 / 681ed00 - lavf 54.22.100 / 54.13.0 - avformat.h
  463.   Add AVFMT_FLAG_NOBUFFER for low latency use cases.
  464.  
  465. 2012-07-10 - fbe0245 / f3e5e6f - lavu 51.65.100 / 51.37.0
  466.   Add av_malloc_array() and av_mallocz_array()
  467.  
  468. 2012-06-22 - e847f41 / d3d3a32 - lavu 51.61.100 / 51.34.0
  469.   Add av_usleep()
  470.  
  471. 2012-06-20 - 4da42eb / ae0a301 - lavu 51.60.100 / 51.33.0
  472.   Move av_gettime() to libavutil, add libavutil/time.h
  473.  
  474. 2012-06-09 - 82edf67 / 3971be0 - lavr 0.0.3
  475.   Add a parameter to avresample_build_matrix() for Dolby/DPLII downmixing.
  476.  
  477. 2012-06-12 - c7b9eab / 9baeff9 - lavfi 2.79.100 / 2.23.0 - avfilter.h
  478.   Add AVFilterContext.nb_inputs/outputs. Deprecate
  479.   AVFilterContext.input/output_count.
  480.  
  481. 2012-06-12 - c7b9eab / 84b9fbe - lavfi 2.79.100 / 2.22.0 - avfilter.h
  482.   Add avfilter_pad_get_type() and avfilter_pad_get_name(). Those
  483.   should now be used instead of accessing AVFilterPad members
  484.   directly.
  485.  
  486. 2012-06-12 - 3630a07 / b0f0dfc - lavu 51.57.100 / 51.32.0 - audioconvert.h
  487.   Add av_get_channel_layout_channel_index(), av_get_channel_name()
  488.   and av_channel_layout_extract_channel().
  489.  
  490. 2012-05-25 - 53ce990 / 154486f - lavu 51.55.100 / 51.31.0 - opt.h
  491.   Add av_opt_set_bin()
  492.  
  493. 2012-05-15 - lavfi 2.74.100 / 2.17.0
  494.   Add support for audio filters
  495.   61930bd / ac71230, 1cbf7fb / a2cd9be - add video/audio buffer sink in a new installed
  496.                     header buffersink.h
  497.   1cbf7fb / 720c6b7 - add av_buffersrc_write_frame(), deprecate
  498.             av_vsrc_buffer_add_frame()
  499.   61930bd / ab16504 - add avfilter_copy_buf_props()
  500.   61930bd / 9453c9e - add extended_data to AVFilterBuffer
  501.   61930bd / 1b8c927 - add avfilter_get_audio_buffer_ref_from_arrays()
  502.  
  503. 2012-05-09 - lavu 51.53.100 / 51.30.0 - samplefmt.h
  504.   61930bd / 142e740 - add av_samples_copy()
  505.   61930bd / 6d7f617 - add av_samples_set_silence()
  506.  
  507. 2012-05-09 - 61930bd / a5117a2 - lavc 54.21.101 / 54.13.1
  508.   For audio formats with fixed frame size, the last frame
  509.   no longer needs to be padded with silence, libavcodec
  510.   will handle this internally (effectively all encoders
  511.   behave as if they had CODEC_CAP_SMALL_LAST_FRAME set).
  512.  
  513. 2012-05-07 - 653d117 / 828bd08 - lavc 54.20.100 / 54.13.0 - avcodec.h
  514.   Add sample_rate and channel_layout fields to AVFrame.
  515.  
  516. 2012-05-01 - 2330eb1 / 4010d72 - lavr 0.0.1
  517.   Change AV_MIX_COEFF_TYPE_Q6 to AV_MIX_COEFF_TYPE_Q8.
  518.  
  519. 2012-04-25 - e890b68 / 3527a73 - lavu 51.48.100 / 51.29.0 - cpu.h
  520.   Add av_parse_cpu_flags()
  521.  
  522. 2012-04-24 - 3ead79e / c8af852 - lavr 0.0.0
  523.   Add libavresample audio conversion library
  524.  
  525. 2012-04-20 - 3194ab7 / 0c0d1bc - lavu 51.47.100 / 51.28.0 - audio_fifo.h
  526.   Add audio FIFO functions:
  527.     av_audio_fifo_free()
  528.     av_audio_fifo_alloc()
  529.     av_audio_fifo_realloc()
  530.     av_audio_fifo_write()
  531.     av_audio_fifo_read()
  532.     av_audio_fifo_drain()
  533.     av_audio_fifo_reset()
  534.     av_audio_fifo_size()
  535.     av_audio_fifo_space()
  536.  
  537. 2012-04-14 - lavfi 2.70.100 / 2.16.0 - avfiltergraph.h
  538.   7432bcf / d7bcc71 Add avfilter_graph_parse2().
  539.  
  540. 2012-04-08 - 6bfb304 / 4d693b0 - lavu 51.46.100 / 51.27.0 - samplefmt.h
  541.   Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()
  542.  
  543. 2012-03-21 - b75c67d - lavu 51.43.100
  544.   Add bprint.h for bprint API.
  545.  
  546. 2012-02-21 - 9cbf17e - lavc 54.4.100
  547.   Add av_get_pcm_codec() function.
  548.  
  549. 2012-02-16 - 560b224 - libswr 0.7.100
  550.   Add swr_set_matrix() function.
  551.  
  552. 2012-02-09 - c28e7af - lavu 51.39.100
  553.   Add a new installed header libavutil/timestamp.h with timestamp
  554.   utilities.
  555.  
  556. 2012-02-06 - 70ffda3 - lavu 51.38.100
  557.   Add av_parse_ratio() function to parseutils.h.
  558.  
  559. 2012-02-06 - 70ffda3 - lavu 51.38.100
  560.   Add AV_LOG_MAX_OFFSET macro to log.h.
  561.  
  562. 2012-02-02 - 0eaa123 - lavu 51.37.100
  563.   Add public timecode helpers.
  564.  
  565. 2012-01-24 - 0c3577b - lavfi 2.60.100
  566.   Add avfilter_graph_dump.
  567.  
  568. 2012-03-20 - 0ebd836 / 3c90cc2 - lavfo 54.2.0
  569.   Deprecate av_read_packet(), use av_read_frame() with
  570.   AVFMT_FLAG_NOPARSE | AVFMT_FLAG_NOFILLIN in AVFormatContext.flags
  571.  
  572. 2012-03-05 - lavc 54.10.100 / 54.8.0
  573.   f095391 / 6699d07 Add av_get_exact_bits_per_sample()
  574.   f095391 / 9524cf7 Add av_get_audio_frame_duration()
  575.  
  576. 2012-03-04 - 2af8f2c / 44fe77b - lavc 54.8.100 / 54.7.0 - avcodec.h
  577.   Add av_codec_is_encoder/decoder().
  578.  
  579. 2012-03-01 - 1eb7f39 / 442c132 - lavc 54.5.100 / 54.3.0 - avcodec.h
  580.   Add av_packet_shrink_side_data.
  581.  
  582. 2012-02-29 - 79ae084 / dd2a4bc - lavf 54.2.100 / 54.2.0 - avformat.h
  583.   Add AVStream.attached_pic and AV_DISPOSITION_ATTACHED_PIC,
  584.   used for dealing with attached pictures/cover art.
  585.  
  586. 2012-02-25 - 305e4b3 / c9bca80 - lavu 51.41.100 / 51.24.0 - error.h
  587.   Add AVERROR_UNKNOWN
  588.   NOTE: this was backported to 0.8
  589.  
  590. 2012-02-20 - eadd426 / e9cda85 - lavc 54.2.100 / 54.2.0
  591.   Add duration field to AVCodecParserContext
  592.  
  593. 2012-02-20 - eadd426 / 0b42a93 - lavu 51.40.100 / 51.23.1 - mathematics.h
  594.   Add av_rescale_q_rnd()
  595.  
  596. 2012-02-08 - f2b20b7 / 38d5533 - lavu 51.38.101 / 51.22.1 - pixdesc.h
  597.   Add PIX_FMT_PSEUDOPAL flag.
  598.  
  599. 2012-02-08 - f2b20b7 / 52f82a1 - lavc 54.2.100 / 54.1.0
  600.   Add avcodec_encode_video2() and deprecate avcodec_encode_video().
  601.  
  602. 2012-02-01 - 4c677df / 316fc74 - lavc 54.1.0
  603.   Add av_fast_padded_malloc() as alternative for av_realloc() when aligned
  604.   memory is required. The buffer will always have FF_INPUT_BUFFER_PADDING_SIZE
  605.   zero-padded bytes at the end.
  606.  
  607. 2012-01-31 - a369a6b / dd6d3b0 - lavf 54.1.0
  608.   Add avformat_get_riff_video_tags() and avformat_get_riff_audio_tags().
  609.   NOTE: this was backported to 0.8
  610.  
  611. 2012-01-31 - a369a6b / af08d9a - lavc 54.1.0
  612.   Add avcodec_is_open() function.
  613.   NOTE: this was backported to 0.8
  614.  
  615. 2012-01-30 - 151ecc2 / 8b93312 - lavu 51.36.100 / 51.22.0 - intfloat.h
  616.   Add a new installed header libavutil/intfloat.h with int/float punning
  617.   functions.
  618.   NOTE: this was backported to 0.8
  619.  
  620. 2012-01-25 - lavf 53.31.100 / 53.22.0
  621.   3c5fe5b / f1caf01 Allow doing av_write_frame(ctx, NULL) for flushing possible
  622.           buffered data within a muxer. Added AVFMT_ALLOW_FLUSH for
  623.           muxers supporting it (av_write_frame makes sure it is called
  624.           only for muxers with this flag).
  625.  
  626. 2012-01-15 - lavc 53.56.105 / 53.34.0
  627.   New audio encoding API:
  628.   67f5650 / b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio
  629.           encoders.
  630.   67f5650 / 5ee5fa0 Add avcodec_fill_audio_frame() as a convenience function.
  631.   67f5650 / b2c75b6 Add avcodec_encode_audio2() and deprecate avcodec_encode_audio().
  632.           Add AVCodec.encode2().
  633.  
  634. 2012-01-12 - b18e17e / 3167dc9 - lavfi 2.59.100 / 2.15.0
  635.   Add a new installed header -- libavfilter/version.h -- with version macros.
  636.  
  637. 2011-12-08 - a502939 - lavfi 2.52.0
  638.   Add av_buffersink_poll_frame() to buffersink.h.
  639.  
  640. 2011-12-08 - 26c6fec - lavu 51.31.0
  641.   Add av_log_format_line.
  642.  
  643. 2011-12-03 - 976b095 - lavu 51.30.0
  644.   Add AVERROR_BUG.
  645.  
  646. 2011-11-24 - 573ffbb - lavu 51.28.1
  647.   Add av_get_alt_sample_fmt() to samplefmt.h.
  648.  
  649. 2011-11-03 - 96949da - lavu 51.23.0
  650.   Add av_strcasecmp() and av_strncasecmp() to avstring.h.
  651.  
  652. 2011-10-20 - b35e9e1 - lavu 51.22.0
  653.   Add av_strtok() to avstring.h.
  654.  
  655. 2012-01-03 - ad1c8dd / b73ec05 - lavu 51.34.100 / 51.21.0
  656.   Add av_popcount64
  657.  
  658. 2011-12-18 - 7c29313 / 8400b12 - lavc 53.46.1 / 53.28.1
  659.   Deprecate AVFrame.age. The field is unused.
  660.  
  661. 2011-12-12 - 8bc7fe4 / 5266045 - lavf 53.25.0 / 53.17.0
  662.   Add avformat_close_input().
  663.   Deprecate av_close_input_file() and av_close_input_stream().
  664.  
  665. 2011-12-02 - e4de716 / 0eea212 - lavc 53.40.0 / 53.25.0
  666.   Add nb_samples and extended_data fields to AVFrame.
  667.   Deprecate AVCODEC_MAX_AUDIO_FRAME_SIZE.
  668.   Deprecate avcodec_decode_audio3() in favor of avcodec_decode_audio4().
  669.   avcodec_decode_audio4() writes output samples to an AVFrame, which allows
  670.   audio decoders to use get_buffer().
  671.  
  672. 2011-12-04 - e4de716 / 560f773 - lavc 53.40.0 / 53.24.0
  673.   Change AVFrame.data[4]/base[4]/linesize[4]/error[4] to [8] at next major bump.
  674.   Change AVPicture.data[4]/linesize[4] to [8] at next major bump.
  675.   Change AVCodecContext.error[4] to [8] at next major bump.
  676.   Add AV_NUM_DATA_POINTERS to simplify the bump transition.
  677.  
  678. 2011-11-23 - 8e576d5 / bbb46f3 - lavu 51.27.0 / 51.18.0
  679.   Add av_samples_get_buffer_size(), av_samples_fill_arrays(), and
  680.   av_samples_alloc(), to samplefmt.h.
  681.  
  682. 2011-11-23 - 8e576d5 / 8889cc4 - lavu 51.27.0 / 51.17.0
  683.   Add planar sample formats and av_sample_fmt_is_planar() to samplefmt.h.
  684.  
  685. 2011-11-19 - dbb38bc / f3a29b7 - lavc 53.36.0 / 53.21.0
  686.   Move some AVCodecContext fields to a new private struct, AVCodecInternal,
  687.   which is accessed from a new field, AVCodecContext.internal.
  688.   - fields moved:
  689.       AVCodecContext.internal_buffer       --> AVCodecInternal.buffer
  690.       AVCodecContext.internal_buffer_count --> AVCodecInternal.buffer_count
  691.       AVCodecContext.is_copy               --> AVCodecInternal.is_copy
  692.  
  693. 2011-11-16 - 8709ba9 / 6270671 - lavu 51.26.0 / 51.16.0
  694.   Add av_timegm()
  695.  
  696. 2011-11-13 - lavf 53.21.0 / 53.15.0
  697.   New interrupt callback API, allowing per-AVFormatContext/AVIOContext
  698.   interrupt callbacks.
  699.   5f268ca / 6aa0b98 Add AVIOInterruptCB struct and the interrupt_callback field to
  700.           AVFormatContext.
  701.   5f268ca / 1dee0ac Add avio_open2() with additional parameters. Those are
  702.           an interrupt callback and an options AVDictionary.
  703.           This will allow passing AVOptions to protocols after lavf
  704.           54.0.
  705.  
  706. 2011-11-06 - 13b7781 / ba04ecf - lavu 51.24.0 / 51.14.0
  707.   Add av_strcasecmp() and av_strncasecmp() to avstring.h.
  708.  
  709. 2011-11-06 - 13b7781 / 07b172f - lavu 51.24.0 / 51.13.0
  710.   Add av_toupper()/av_tolower()
  711.  
  712. 2011-11-05 - d8cab5c / b6d08f4 - lavf 53.19.0 / 53.13.0
  713.   Add avformat_network_init()/avformat_network_deinit()
  714.  
  715. 2011-10-27 - 6faf0a2 / 512557b - lavc 53.24.0 / 53.15.0
  716.   Remove avcodec_parse_frame.
  717.   Deprecate AVCodecContext.parse_only and CODEC_CAP_PARSE_ONLY.
  718.  
  719. 2011-10-19 - d049257 / 569129a - lavf 53.17.0 / 53.10.0
  720.   Add avformat_new_stream(). Deprecate av_new_stream().
  721.  
  722. 2011-10-13 - 91eb1b1 / b631fba - lavf 53.16.0 / 53.9.0
  723.   Add AVFMT_NO_BYTE_SEEK AVInputFormat flag.
  724.  
  725. 2011-10-12 - lavu 51.21.0 / 51.12.0
  726.   AVOptions API rewrite.
  727.  
  728.   - f884ef0 / 145f741 FF_OPT_TYPE* renamed to AV_OPT_TYPE_*
  729.   - new setting/getting functions with slightly different semantics:
  730.         f884ef0 / dac66da av_set_string3 -> av_opt_set
  731.                 av_set_double  -> av_opt_set_double
  732.                 av_set_q       -> av_opt_set_q
  733.                 av_set_int     -> av_opt_set_int
  734.  
  735.         f884ef0 / 41d9d51 av_get_string  -> av_opt_get
  736.                 av_get_double  -> av_opt_get_double
  737.                 av_get_q       -> av_opt_get_q
  738.                 av_get_int     -> av_opt_get_int
  739.  
  740.   - f884ef0 / 8c5dcaa trivial rename av_next_option -> av_opt_next
  741.   - f884ef0 / 641c7af new functions - av_opt_child_next, av_opt_child_class_next
  742.     and av_opt_find2()
  743.  
  744. 2011-09-22 - a70e787 - lavu 51.17.0
  745.   Add av_x_if_null().
  746.  
  747. 2011-09-18 - 645cebb - lavc 53.16.0
  748.   Add showall flag2
  749.  
  750. 2011-09-16 - ea8de10 - lavfi 2.42.0
  751.   Add avfilter_all_channel_layouts.
  752.  
  753. 2011-09-16 - 9899037 - lavfi 2.41.0
  754.   Rename avfilter_all_* function names to avfilter_make_all_*.
  755.  
  756.   In particular, apply the renames:
  757.   avfilter_all_formats         -> avfilter_make_all_formats
  758.   avfilter_all_channel_layouts -> avfilter_make_all_channel_layouts
  759.   avfilter_all_packing_formats -> avfilter_make_all_packing_formats
  760.  
  761. 2011-09-12 - 4381bdd - lavfi 2.40.0
  762.   Change AVFilterBufferRefAudioProps.sample_rate type from uint32_t to int.
  763.  
  764. 2011-09-12 - 2c03174 - lavfi 2.40.0
  765.   Simplify signature for avfilter_get_audio_buffer(), make it
  766.   consistent with avfilter_get_video_buffer().
  767.  
  768. 2011-09-06 - 4f7dfe1 - lavfi 2.39.0
  769.   Rename libavfilter/vsink_buffer.h to libavfilter/buffersink.h.
  770.  
  771. 2011-09-06 - c4415f6 - lavfi 2.38.0
  772.   Unify video and audio sink API.
  773.  
  774.   In particular, add av_buffersink_get_buffer_ref(), deprecate
  775.   av_vsink_buffer_get_video_buffer_ref() and change the value for the
  776.   opaque field passed to the abuffersink init function.
  777.  
  778. 2011-09-04 - 61e2e29 - lavu 51.16.0
  779.   Add av_asprintf().
  780.  
  781. 2011-08-22 - dacd827 - lavf 53.10.0
  782.   Add av_find_program_from_stream().
  783.  
  784. 2011-08-20 - 69e2c1a - lavu 51.13.0
  785.   Add av_get_media_type_string().
  786.  
  787. 2011-09-03 - 1889c67 / fb4ca26 - lavc 53.13.0
  788.                        lavf 53.11.0
  789.                        lsws  2.1.0
  790.   Add {avcodec,avformat,sws}_get_class().
  791.  
  792. 2011-08-03 - 1889c67 / c11fb82 - lavu 51.15.0
  793.   Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
  794.  
  795. 2011-08-14 - 323b930 - lavu 51.12.0
  796.   Add av_fifo_peek2(), deprecate av_fifo_peek().
  797.  
  798. 2011-08-26 - lavu 51.14.0 / 51.9.0
  799.   - 976a8b2 / add41de..976a8b2 / abc78a5 Do not include intfloat_readwrite.h,
  800.     mathematics.h, rational.h, pixfmt.h, or log.h from avutil.h.
  801.  
  802. 2011-08-16 - 27fbe31 / 48f9e45 - lavf 53.11.0 / 53.8.0
  803.   Add avformat_query_codec().
  804.  
  805. 2011-08-16 - 27fbe31 / bca06e7 - lavc 53.11.0
  806.   Add avcodec_get_type().
  807.  
  808. 2011-08-06 - 0cb233c / 2f63440 - lavf 53.7.0
  809.   Add error_recognition to AVFormatContext.
  810.  
  811. 2011-08-02 - 1d186e9 / 9d39cbf - lavc 53.9.1
  812.   Add AV_PKT_FLAG_CORRUPT AVPacket flag.
  813.  
  814. 2011-07-16 - b57df29 - lavfi 2.27.0
  815.   Add audio packing negotiation fields and helper functions.
  816.  
  817.   In particular, add AVFilterPacking enum, planar, in_packings and
  818.   out_packings fields to AVFilterLink, and the functions:
  819.   avfilter_set_common_packing_formats()
  820.   avfilter_all_packing_formats()
  821.  
  822. 2011-07-10 - 3602ad7 / a67c061 - lavf 53.6.0
  823.   Add avformat_find_stream_info(), deprecate av_find_stream_info().
  824.   NOTE: this was backported to 0.7
  825.  
  826. 2011-07-10 - 3602ad7 / 0b950fe - lavc 53.8.0
  827.   Add avcodec_open2(), deprecate avcodec_open().
  828.   NOTE: this was backported to 0.7
  829.  
  830.   Add avcodec_alloc_context3. Deprecate avcodec_alloc_context() and
  831.   avcodec_alloc_context2().
  832.  
  833. 2011-07-01 - b442ca6 - lavf 53.5.0 - avformat.h
  834.   Add function av_get_output_timestamp().
  835.  
  836. 2011-06-28 - 5129336 - lavu 51.11.0 - avutil.h
  837.   Define the AV_PICTURE_TYPE_NONE value in AVPictureType enum.
  838.  
  839. 2011-06-19 - fd2c0a5 - lavfi 2.23.0 - avfilter.h
  840.   Add layout negotiation fields and helper functions.
  841.  
  842.   In particular, add in_chlayouts and out_chlayouts to AVFilterLink,
  843.   and the functions:
  844.   avfilter_set_common_sample_formats()
  845.   avfilter_set_common_channel_layouts()
  846.   avfilter_all_channel_layouts()
  847.  
  848. 2011-06-19 - 527ca39 - lavfi 2.22.0 - AVFilterFormats
  849.   Change type of AVFilterFormats.formats from int * to int64_t *,
  850.   and update formats handling API accordingly.
  851.  
  852.   avfilter_make_format_list() still takes a int32_t array and converts
  853.   it to int64_t. A new function, avfilter_make_format64_list(), that
  854.   takes int64_t arrays has been added.
  855.  
  856. 2011-06-19 - 44f669e - lavfi 2.21.0 - vsink_buffer.h
  857.   Add video sink buffer and vsink_buffer.h public header.
  858.  
  859. 2011-06-12 - 9fdf772 - lavfi 2.18.0 - avcodec.h
  860.   Add avfilter_get_video_buffer_ref_from_frame() function in
  861.   libavfilter/avcodec.h.
  862.  
  863. 2011-06-12 - c535494 - lavfi 2.17.0 - avfiltergraph.h
  864.   Add avfilter_inout_alloc() and avfilter_inout_free() functions.
  865.  
  866. 2011-06-12 - 6119b23 - lavfi 2.16.0 - avfilter_graph_parse()
  867.   Change avfilter_graph_parse() signature.
  868.  
  869. 2011-06-23 - 686959e / 67e9ae1 - lavu 51.10.0 / 51.8.0 - attributes.h
  870.   Add av_printf_format().
  871.  
  872. 2011-06-16 - 2905e3f / 05e84c9, 2905e3f / 25de595 - lavf 53.4.0 / 53.2.0 - avformat.h
  873.   Add avformat_open_input and avformat_write_header().
  874.   Deprecate av_open_input_stream, av_open_input_file,
  875.   AVFormatParameters and av_write_header.
  876.  
  877. 2011-06-16 - 2905e3f / 7e83e1c, 2905e3f / dc59ec5 - lavu 51.9.0 / 51.7.0 - opt.h
  878.   Add av_opt_set_dict() and av_opt_find().
  879.   Deprecate av_find_opt().
  880.   Add AV_DICT_APPEND flag.
  881.  
  882. 2011-06-10 - 45fb647 / cb7c11c - lavu 51.6.0 - opt.h
  883.   Add av_opt_flag_is_set().
  884.  
  885. 2011-06-10 - c381960 - lavfi 2.15.0 - avfilter_get_audio_buffer_ref_from_arrays
  886.   Add avfilter_get_audio_buffer_ref_from_arrays() to avfilter.h.
  887.  
  888. 2011-06-09 - f9ecb84 / d9f80ea - lavu 51.8.0 - AVMetadata
  889.   Move AVMetadata from lavf to lavu and rename it to
  890.   AVDictionary -- new installed header dict.h.
  891.   All av_metadata_* functions renamed to av_dict_*.
  892.  
  893. 2011-06-07 - d552f61 / a6703fa - lavu 51.8.0 - av_get_bytes_per_sample()
  894.   Add av_get_bytes_per_sample() in libavutil/samplefmt.h.
  895.   Deprecate av_get_bits_per_sample_fmt().
  896.  
  897. 2011-06-05 - f956924 / b39b062 - lavu 51.8.0 - opt.h
  898.   Add av_opt_free convenience function.
  899.  
  900. 2011-06-06 - 95a0242 - lavfi 2.14.0 - AVFilterBufferRefAudioProps
  901.   Remove AVFilterBufferRefAudioProps.size, and use nb_samples in
  902.   avfilter_get_audio_buffer() and avfilter_default_get_audio_buffer() in
  903.   place of size.
  904.  
  905. 2011-06-06 - 0bc2cca - lavu 51.6.0 - av_samples_alloc()
  906.   Switch nb_channels and nb_samples parameters order in
  907.   av_samples_alloc().
  908.  
  909. 2011-06-06 - e1c7414 - lavu 51.5.0 - av_samples_*
  910.   Change the data layout created by av_samples_fill_arrays() and
  911.   av_samples_alloc().
  912.  
  913. 2011-06-06 - 27bcf55 - lavfi 2.13.0 - vsrc_buffer.h
  914.   Make av_vsrc_buffer_add_video_buffer_ref() accepts an additional
  915.   flags parameter in input.
  916.  
  917. 2011-06-03 - e977ca2 - lavfi 2.12.0 - avfilter_link_free()
  918.   Add avfilter_link_free() function.
  919.  
  920. 2011-06-02 - 5ad38d9 - lavu 51.4.0 - av_force_cpu_flags()
  921.   Add av_cpu_flags() in libavutil/cpu.h.
  922.  
  923. 2011-05-28 - e71f260 - lavu 51.3.0 - pixdesc.h
  924.   Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
  925.   avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
  926.  
  927. 2011-05-25 - 39e4206 / 30315a8 - lavf 53.3.0 - avformat.h
  928.   Add fps_probe_size to AVFormatContext.
  929.  
  930. 2011-05-22 - 5ecdfd0 - lavf 53.2.0 - avformat.h
  931.   Introduce avformat_alloc_output_context2() and deprecate
  932.   avformat_alloc_output_context().
  933.  
  934. 2011-05-22 - 83db719 - lavfi 2.10.0 - vsrc_buffer.h
  935.   Make libavfilter/vsrc_buffer.h public.
  936.  
  937. 2011-05-19 - c000a9f - lavfi 2.8.0 - avcodec.h
  938.   Add av_vsrc_buffer_add_frame() to libavfilter/avcodec.h.
  939.  
  940. 2011-05-14 - 9fdf772 - lavfi 2.6.0 - avcodec.h
  941.   Add avfilter_get_video_buffer_ref_from_frame() to libavfilter/avcodec.h.
  942.  
  943. 2011-05-18 - 75a37b5 / 64150ff - lavc 53.7.0 - AVCodecContext.request_sample_fmt
  944.   Add request_sample_fmt field to AVCodecContext.
  945.  
  946. 2011-05-10 - 59eb12f / 188dea1 - lavc 53.6.0 - avcodec.h
  947.   Deprecate AVLPCType and the following fields in
  948.   AVCodecContext: lpc_coeff_precision, prediction_order_method,
  949.   min_partition_order, max_partition_order, lpc_type, lpc_passes.
  950.   Corresponding FLAC encoder options should be used instead.
  951.  
  952. 2011-05-07 - 9fdf772 - lavfi 2.5.0 - avcodec.h
  953.   Add libavfilter/avcodec.h header and avfilter_copy_frame_props()
  954.   function.
  955.  
  956. 2011-05-07 - 18ded93 - lavc 53.5.0 - AVFrame
  957.   Add format field to AVFrame.
  958.  
  959. 2011-05-07 - 22333a6 - lavc 53.4.0 - AVFrame
  960.   Add width and height fields to AVFrame.
  961.  
  962. 2011-05-01 - 35fe66a - lavfi 2.4.0 - avfilter.h
  963.   Rename AVFilterBufferRefVideoProps.pixel_aspect to
  964.   sample_aspect_ratio.
  965.  
  966. 2011-05-01 - 77e9dee - lavc 53.3.0 - AVFrame
  967.   Add a sample_aspect_ratio field to AVFrame.
  968.  
  969. 2011-05-01 - 1ba5727 - lavc 53.2.0 - AVFrame
  970.   Add a pkt_pos field to AVFrame.
  971.  
  972. 2011-04-29 - 35ceaa7 - lavu 51.2.0 - mem.h
  973.   Add av_dynarray_add function for adding
  974.   an element to a dynamic array.
  975.  
  976. 2011-04-26 - d7e5aeb / bebe72f - lavu 51.1.0 - avutil.h
  977.   Add AVPictureType enum and av_get_picture_type_char(), deprecate
  978.   FF_*_TYPE defines and av_get_pict_type_char() defined in
  979.   libavcodec/avcodec.h.
  980.  
  981. 2011-04-26 - d7e5aeb / 10d3940 - lavfi 2.3.0 - avfilter.h
  982.   Add pict_type and key_frame fields to AVFilterBufferRefVideo.
  983.  
  984. 2011-04-26 - d7e5aeb / 7a11c82 - lavfi 2.2.0 - vsrc_buffer
  985.   Add sample_aspect_ratio fields to vsrc_buffer arguments
  986.  
  987. 2011-04-21 - 8772156 / 94f7451 - lavc 53.1.0 - avcodec.h
  988.   Add CODEC_CAP_SLICE_THREADS for codecs supporting sliced threading.
  989.  
  990. 2011-04-15 - lavc 52.120.0 - avcodec.h
  991.   AVPacket structure got additional members for passing side information:
  992.     c407984 / 4de339e introduce side information for AVPacket
  993.     c407984 / 2d8591c make containers pass palette change in AVPacket
  994.  
  995. 2011-04-12 - lavf 52.107.0 - avio.h
  996.   Avio cleanup, part II - deprecate the entire URLContext API:
  997.     c55780d / 175389c add avio_check as a replacement for url_exist
  998.     9891004 / ff1ec0c add avio_pause and avio_seek_time as replacements
  999.             for _av_url_read_fseek/fpause
  1000.     d4d0932 / cdc6a87 deprecate av_protocol_next(), avio_enum_protocols
  1001.             should be used instead.
  1002.     c88caa5 / 80c6e23 rename url_set_interrupt_cb->avio_set_interrupt_cb.
  1003.     c88caa5 / f87b1b3 rename open flags: URL_* -> AVIO_*
  1004.     d4d0932 / f8270bb add avio_enum_protocols.
  1005.     d4d0932 / 5593f03 deprecate URLProtocol.
  1006.     d4d0932 / c486dad deprecate URLContext.
  1007.     d4d0932 / 026e175 deprecate the typedef for URLInterruptCB
  1008.     c88caa5 / 8e76a19 deprecate av_register_protocol2.
  1009.     11d7841 / b840484 deprecate URL_PROTOCOL_FLAG_NESTED_SCHEME
  1010.     11d7841 / 1305d93 deprecate av_url_read_seek
  1011.     11d7841 / fa104e1 deprecate av_url_read_pause
  1012.     434f248 / 727c7aa deprecate url_get_filename().
  1013.     434f248 / 5958df3 deprecate url_max_packet_size().
  1014.     434f248 / 1869ea0 deprecate url_get_file_handle().
  1015.     434f248 / 32a97d4 deprecate url_filesize().
  1016.     434f248 / e52a914 deprecate url_close().
  1017.     434f248 / 58a48c6 deprecate url_seek().
  1018.     434f248 / 925e908 deprecate url_write().
  1019.     434f248 / dce3756 deprecate url_read_complete().
  1020.     434f248 / bc371ac deprecate url_read().
  1021.     434f248 / 0589da0 deprecate url_open().
  1022.     434f248 / 62eaaea deprecate url_connect.
  1023.     434f248 / 5652bb9 deprecate url_alloc.
  1024.     434f248 / 333e894 deprecate url_open_protocol
  1025.     434f248 / e230705 deprecate url_poll and URLPollEntry
  1026.  
  1027. 2011-04-08 - lavf 52.106.0 - avformat.h
  1028.   Minor avformat.h cleanup:
  1029.     d4d0932 / a9bf9d8 deprecate av_guess_image2_codec
  1030.     d4d0932 / c3675df rename avf_sdp_create->av_sdp_create
  1031.  
  1032. 2011-04-03 - lavf 52.105.0 - avio.h
  1033.   Large-scale renaming/deprecating of AVIOContext-related functions:
  1034.     2cae980 / 724f6a0 deprecate url_fdopen
  1035.     2cae980 / 403ee83 deprecate url_open_dyn_packet_buf
  1036.     2cae980 / 6dc7d80 rename url_close_dyn_buf       -> avio_close_dyn_buf
  1037.     2cae980 / b92c545 rename url_open_dyn_buf        -> avio_open_dyn_buf
  1038.     2cae980 / 8978fed introduce an AVIOContext.seekable field as a replacement for
  1039.             AVIOContext.is_streamed and url_is_streamed()
  1040.     1caa412 / b64030f deprecate get_checksum()
  1041.     1caa412 / 4c4427a deprecate init_checksum()
  1042.     2fd41c9 / 4ec153b deprecate udp_set_remote_url/get_local_port
  1043.     4fa0e24 / 933e90a deprecate av_url_read_fseek/fpause
  1044.     4fa0e24 / 8d9769a deprecate url_fileno
  1045.     0fecf26 / b7f2fdd rename put_flush_packet -> avio_flush
  1046.     0fecf26 / 35f1023 deprecate url_close_buf
  1047.     0fecf26 / 83fddae deprecate url_open_buf
  1048.     0fecf26 / d9d86e0 rename url_fprintf -> avio_printf
  1049.     0fecf26 / 59f65d9 deprecate url_setbufsize
  1050.     6947b0c / 3e68b3b deprecate url_ferror
  1051.     e8bb2e2 deprecate url_fget_max_packet_size
  1052.     76aa876 rename url_fsize -> avio_size
  1053.     e519753 deprecate url_fgetc
  1054.     655e45e deprecate url_fgets
  1055.     a2704c9 rename url_ftell -> avio_tell
  1056.     e16ead0 deprecate get_strz() in favor of avio_get_str
  1057.     0300db8,2af07d3 rename url_fskip -> avio_skip
  1058.     6b4aa5d rename url_fseek -> avio_seek
  1059.     61840b4 deprecate put_tag
  1060.     22a3212 rename url_fopen/fclose -> avio_open/close.
  1061.     0ac8e2b deprecate put_nbyte
  1062.     77eb550 rename put_byte          -> avio_w8
  1063.                    put_[b/l]e<type>  -> avio_w[b/l]<type>
  1064.                    put_buffer        -> avio_write
  1065.     b7effd4 rename get_byte          -> avio_r8,
  1066.                    get_[b/l]e<type>  -> avio_r[b/l]<type>
  1067.                    get_buffer        -> avio_read
  1068.     b3db9ce deprecate get_partial_buffer
  1069.     8d9ac96 rename av_alloc_put_byte -> avio_alloc_context
  1070.  
  1071. 2011-03-25 - 27ef7b1 / 34b47d7 - lavc 52.115.0 - AVCodecContext.audio_service_type
  1072.   Add audio_service_type field to AVCodecContext.
  1073.  
  1074. 2011-03-17 - e309fdc - lavu 50.40.0 - pixfmt.h
  1075.   Add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE pixel formats
  1076.  
  1077. 2011-03-02 - 863c471 - lavf  52.103.0 - av_pkt_dump2, av_pkt_dump_log2
  1078.   Add new functions av_pkt_dump2, av_pkt_dump_log2 that uses the
  1079.   source stream timebase for outputting timestamps. Deprecate
  1080.   av_pkt_dump and av_pkt_dump_log.
  1081.  
  1082. 2011-02-20 - e731b8d - lavf  52.102.0 - avio.h
  1083.   * e731b8d - rename init_put_byte() to ffio_init_context(), deprecating the
  1084.               original, and move it to a private header so it is no longer
  1085.               part of our public API. Instead, use av_alloc_put_byte().
  1086.   * ae628ec - rename ByteIOContext to AVIOContext.
  1087.  
  1088. 2011-02-16 - 09d171b - lavf  52.101.0 - avformat.h
  1089.                        lavu  52.39.0  - parseutils.h
  1090.   * 610219a - Add av_ prefix to dump_format().
  1091.   * f6c7375 - Replace parse_date() in lavf with av_parse_time() in lavu.
  1092.   * ab0287f - Move find_info_tag from lavf to lavu and add av_prefix to it.
  1093.  
  1094. 2011-02-15 - lavu 52.38.0 - merge libavcore
  1095.   libavcore is merged back completely into libavutil
  1096.  
  1097. 2011-02-10 - 55bad0c - lavc 52.113.0 - vbv_delay
  1098.   Add vbv_delay field to AVCodecContext
  1099.  
  1100. 2011-02-14 - 24a83bd - lavf 52.100.0 - AV_DISPOSITION_CLEAN_EFFECTS
  1101.   Add AV_DISPOSITION_CLEAN_EFFECTS disposition flag.
  1102.  
  1103. 2011-02-14 - 910b5b8 - lavfi 1.76.0 - AVFilterLink sample_aspect_ratio
  1104.   Add sample_aspect_ratio field to AVFilterLink.
  1105.  
  1106. 2011-02-10 - 12c14cd - lavf 52.99.0 - AVStream.disposition
  1107.   Add AV_DISPOSITION_HEARING_IMPAIRED and AV_DISPOSITION_VISUAL_IMPAIRED.
  1108.  
  1109. 2011-02-09 - c0b102c - lavc 52.112.0 - avcodec_thread_init()
  1110.   Deprecate avcodec_thread_init()/avcodec_thread_free() use; instead
  1111.   set thread_count before calling avcodec_open.
  1112.  
  1113. 2011-02-09 - 37b00b4 - lavc 52.111.0 - threading API
  1114.   Add CODEC_CAP_FRAME_THREADS with new restrictions on get_buffer()/
  1115.   release_buffer()/draw_horiz_band() callbacks for appropriate codecs.
  1116.   Add thread_type and active_thread_type fields to AVCodecContext.
  1117.  
  1118. 2011-02-08 - 3940caa - lavf 52.98.0 - av_probe_input_buffer
  1119.   Add av_probe_input_buffer() to avformat.h for probing format from a
  1120.   ByteIOContext.
  1121.  
  1122. 2011-02-06 - fe174fc - lavf 52.97.0 - avio.h
  1123.   Add flag for non-blocking protocols: URL_FLAG_NONBLOCK
  1124.  
  1125. 2011-02-04 - f124b08 - lavf 52.96.0 - avformat_free_context()
  1126.   Add avformat_free_context() in avformat.h.
  1127.  
  1128. 2011-02-03 - f5b82f4 - lavc 52.109.0 - add CODEC_ID_PRORES
  1129.   Add CODEC_ID_PRORES to avcodec.h.
  1130.  
  1131. 2011-02-03 - fe9a3fb - lavc 52.109.0 - H.264 profile defines
  1132.   Add defines for H.264 * Constrained Baseline and Intra profiles
  1133.  
  1134. 2011-02-02 - lavf 52.95.0
  1135.   * 50196a9 - add a new installed header version.h.
  1136.   * 4efd5cf, dccbd97, 93b78d1 - add several variants of public
  1137.     avio_{put,get}_str* functions.  Deprecate corresponding semi-public
  1138.     {put,get}_str*.
  1139.  
  1140. 2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h
  1141.   Make av_dlog public.
  1142.  
  1143. 2011-01-31 - 7b3ea55 - lavfi 1.76.0 - vsrc_buffer
  1144.   Add sample_aspect_ratio fields to vsrc_buffer arguments
  1145.  
  1146. 2011-01-31 - 910b5b8 - lavfi 1.75.0 - AVFilterLink sample_aspect_ratio
  1147.   Add sample_aspect_ratio field to AVFilterLink.
  1148.  
  1149. 2011-01-15 - a242ac3 - lavfi 1.74.0 - AVFilterBufferRefAudioProps
  1150.   Rename AVFilterBufferRefAudioProps.samples_nb to nb_samples.
  1151.  
  1152. 2011-01-14 - 7f88a5b - lavf 52.93.0 - av_metadata_copy()
  1153.   Add av_metadata_copy() in avformat.h.
  1154.  
  1155. 2011-01-07 - 81c623f - lavc 52.107.0 - deprecate reordered_opaque
  1156.   Deprecate reordered_opaque in favor of pkt_pts/dts.
  1157.  
  1158. 2011-01-07 - 1919fea - lavc 52.106.0 - pkt_dts
  1159.   Add pkt_dts to AVFrame, this will in the future allow multithreading decoders
  1160.   to not mess up dts.
  1161.  
  1162. 2011-01-07 - 393cbb9 - lavc 52.105.0 - pkt_pts
  1163.   Add pkt_pts to AVFrame.
  1164.  
  1165. 2011-01-07 - 060ec0a - lavc 52.104.0 - av_get_profile_name()
  1166.   Add av_get_profile_name to libavcodec/avcodec.h.
  1167.  
  1168. 2010-12-27 - 0ccabee - lavfi 1.71.0 - AV_PERM_NEG_LINESIZES
  1169.   Add AV_PERM_NEG_LINESIZES in avfilter.h.
  1170.  
  1171. 2010-12-27 - 9128ae0 - lavf 52.91.0 - av_find_best_stream()
  1172.   Add av_find_best_stream to libavformat/avformat.h.
  1173.  
  1174. 2010-12-27 - 107a7e3 - lavf 52.90.0
  1175.   Add AVFMT_NOSTREAMS flag for formats with no streams,
  1176.   like e.g. text metadata.
  1177.  
  1178. 2010-12-22 - 0328b9e - lavu 50.36.0 - file.h
  1179.   Add functions av_file_map() and av_file_unmap() in file.h.
  1180.  
  1181. 2010-12-19 - 0bc55f5 - lavu 50.35.0 - error.h
  1182.   Add "not found" error codes:
  1183.   AVERROR_DEMUXER_NOT_FOUND
  1184.   AVERROR_MUXER_NOT_FOUND
  1185.   AVERROR_DECODER_NOT_FOUND
  1186.   AVERROR_ENCODER_NOT_FOUND
  1187.   AVERROR_PROTOCOL_NOT_FOUND
  1188.   AVERROR_FILTER_NOT_FOUND
  1189.   AVERROR_BSF_NOT_FOUND
  1190.   AVERROR_STREAM_NOT_FOUND
  1191.  
  1192. 2010-12-09 - c61cdd0 - lavcore 0.16.0 - avcore.h
  1193.   Move AV_NOPTS_VALUE, AV_TIME_BASE, AV_TIME_BASE_Q symbols from
  1194.   avcodec.h to avcore.h.
  1195.  
  1196. 2010-12-04 - 16cfc96 - lavc 52.98.0 - CODEC_CAP_NEG_LINESIZES
  1197.   Add CODEC_CAP_NEG_LINESIZES codec capability flag in avcodec.h.
  1198.  
  1199. 2010-12-04 - bb4afa1 - lavu 50.34.0 - av_get_pix_fmt_string()
  1200.   Deprecate avcodec_pix_fmt_string() in favor of
  1201.   pixdesc.h/av_get_pix_fmt_string().
  1202.  
  1203. 2010-12-04 - 4da12e3 - lavcore 0.15.0 - av_image_alloc()
  1204.   Add av_image_alloc() to libavcore/imgutils.h.
  1205.  
  1206. 2010-12-02 - 037be76 - lavfi 1.67.0 - avfilter_graph_create_filter()
  1207.   Add function avfilter_graph_create_filter() in avfiltergraph.h.
  1208.  
  1209. 2010-11-25 - 4723bc2 - lavfi 1.65.0 - avfilter_get_video_buffer_ref_from_arrays()
  1210.   Add function avfilter_get_video_buffer_ref_from_arrays() in
  1211.   avfilter.h.
  1212.  
  1213. 2010-11-21 - 176a615 - lavcore 0.14.0 - audioconvert.h
  1214.   Add a public audio channel API in audioconvert.h, and deprecate the
  1215.   corresponding functions in libavcodec:
  1216.   avcodec_get_channel_name()
  1217.   avcodec_get_channel_layout()
  1218.   avcodec_get_channel_layout_string()
  1219.   avcodec_channel_layout_num_channels()
  1220.   and the CH_* macros defined in libavcodec/avcodec.h.
  1221.  
  1222. 2010-11-21 - 6bfc268 - lavf 52.85.0 - avformat.h
  1223.   Add av_append_packet().
  1224.  
  1225. 2010-11-21 - a08d918 - lavc 52.97.0 - avcodec.h
  1226.   Add av_grow_packet().
  1227.  
  1228. 2010-11-17 - 0985e1a - lavcore 0.13.0 - parseutils.h
  1229.   Add av_parse_color() declared in libavcore/parseutils.h.
  1230.  
  1231. 2010-11-13 - cb2c971 - lavc 52.95.0 - AVCodecContext
  1232.   Add AVCodecContext.subtitle_header and AVCodecContext.subtitle_header_size
  1233.   fields.
  1234.  
  1235. 2010-11-13 - 5aaea02 - lavfi 1.62.0 - avfiltergraph.h
  1236.   Make avfiltergraph.h public.
  1237.  
  1238. 2010-11-13 - 4fcbb2a - lavfi 1.61.0 - avfiltergraph.h
  1239.   Remove declarations from avfiltergraph.h for the functions:
  1240.   avfilter_graph_check_validity()
  1241.   avfilter_graph_config_links()
  1242.   avfilter_graph_config_formats()
  1243.   which are now internal.
  1244.   Use avfilter_graph_config() instead.
  1245.  
  1246. 2010-11-08 - d2af720 - lavu 50.33.0 - eval.h
  1247.   Deprecate functions:
  1248.   av_parse_and_eval_expr(),
  1249.   av_parse_expr(),
  1250.   av_eval_expr(),
  1251.   av_free_expr(),
  1252.   in favor of the functions:
  1253.   av_expr_parse_and_eval(),
  1254.   av_expr_parse(),
  1255.   av_expr_eval(),
  1256.   av_expr_free().
  1257.  
  1258. 2010-11-08 - 24de0ed - lavfi 1.59.0 - avfilter_free()
  1259.   Rename avfilter_destroy() to avfilter_free().
  1260.   This change breaks libavfilter API/ABI.
  1261.  
  1262. 2010-11-07 - 1e80a0e - lavfi 1.58.0 - avfiltergraph.h
  1263.   Remove graphparser.h header, move AVFilterInOut and
  1264.   avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
  1265.  
  1266. 2010-11-07 - 7313132 - lavfi 1.57.0 - AVFilterInOut
  1267.   Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
  1268.   This change breaks libavfilter API.
  1269.  
  1270. 2010-11-04 - 97dd1e4 - lavfi 1.56.0 - avfilter_graph_free()
  1271.   Rename avfilter_graph_destroy() to avfilter_graph_free().
  1272.   This change breaks libavfilter API/ABI.
  1273.  
  1274. 2010-11-04 - e15aeea - lavfi 1.55.0 - avfilter_graph_alloc()
  1275.   Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
  1276.  
  1277. 2010-11-02 - 6f84cd1 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
  1278.   Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
  1279.   deprecate av_get_bits_per_sample_format().
  1280.  
  1281. 2010-11-02 - d63e456 - lavcore 0.11.0 - samplefmt.h
  1282.   Add sample format functions in libavcore/samplefmt.h:
  1283.   av_get_sample_fmt_name(),
  1284.   av_get_sample_fmt(),
  1285.   av_get_sample_fmt_string(),
  1286.   and deprecate the corresponding libavcodec/audioconvert.h functions:
  1287.   avcodec_get_sample_fmt_name(),
  1288.   avcodec_get_sample_fmt(),
  1289.   avcodec_sample_fmt_string().
  1290.  
  1291. 2010-11-02 - 262d1c5 - lavcore 0.10.0 - samplefmt.h
  1292.   Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
  1293.   SampleFormat.
  1294.  
  1295. 2010-10-16 - 2a24df9 - lavfi 1.52.0 - avfilter_graph_config()
  1296.   Add the function avfilter_graph_config() in avfiltergraph.h.
  1297.  
  1298. 2010-10-15 - 03700d3 - lavf 52.83.0 - metadata API
  1299.   Change demuxers to export metadata in generic format and
  1300.   muxers to accept generic format. Deprecate the public
  1301.   conversion API.
  1302.  
  1303. 2010-10-10 - 867ae7a - lavfi 1.49.0 - AVFilterLink.time_base
  1304.   Add time_base field to AVFilterLink.
  1305.  
  1306. 2010-09-27 - c85eef4 - lavu 50.31.0 - av_set_options_string()
  1307.   Move av_set_options_string() from libavfilter/parseutils.h to
  1308.   libavutil/opt.h.
  1309.  
  1310. 2010-09-27 - acc0490 - lavfi 1.47.0 - AVFilterLink
  1311.   Make the AVFilterLink fields srcpad and dstpad store the pointers to
  1312.   the source and destination pads, rather than their indexes.
  1313.  
  1314. 2010-09-27 - 372e288 - lavu 50.30.0 - av_get_token()
  1315.   Move av_get_token() from libavfilter/parseutils.h to
  1316.   libavutil/avstring.h.
  1317.  
  1318. 2010-09-26 - 635d4ae - lsws 0.12.0 - swscale.h
  1319.   Add the functions sws_alloc_context() and sws_init_context().
  1320.  
  1321. 2010-09-26 - 6ed0404 - lavu 50.29.0 - opt.h
  1322.   Move libavcodec/opt.h to libavutil/opt.h.
  1323.  
  1324. 2010-09-24 - 1c1c80f - lavu 50.28.0 - av_log_set_flags()
  1325.   Default of av_log() changed due to many problems to the old no repeat
  1326.   detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
  1327.   enabling it for your app!.
  1328.  
  1329. 2010-09-24 - f66eb58 - lavc 52.90.0 - av_opt_show2()
  1330.   Deprecate av_opt_show() in favor or av_opt_show2().
  1331.  
  1332. 2010-09-14 - bc6f0af - lavu 50.27.0 - av_popcount()
  1333.   Add av_popcount() to libavutil/common.h.
  1334.  
  1335. 2010-09-08 - c6c98d0 - lavu 50.26.0 - av_get_cpu_flags()
  1336.   Add av_get_cpu_flags().
  1337.  
  1338. 2010-09-07 - 34017fd - lavcore 0.9.0 - av_image_copy()
  1339.   Add av_image_copy().
  1340.  
  1341. 2010-09-07 - 9686abb - lavcore 0.8.0 - av_image_copy_plane()
  1342.   Add av_image_copy_plane().
  1343.  
  1344. 2010-09-07 - 9b7269e - lavcore 0.7.0 - imgutils.h
  1345.   Adopt hierarchical scheme for the imgutils.h function names,
  1346.   deprecate the old names.
  1347.  
  1348. 2010-09-04 - 7160bb7 - lavu 50.25.0 - AV_CPU_FLAG_*
  1349.   Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
  1350.   of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
  1351.  
  1352. 2010-08-26 - 5da19b5 - lavc 52.87.0 - avcodec_get_channel_layout()
  1353.   Add avcodec_get_channel_layout() in audioconvert.h.
  1354.  
  1355. 2010-08-20 - e344336 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
  1356.   Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
  1357.  
  1358. 2010-08-18 - a6ddf8b - lavcore 0.5.0 - av_fill_image_max_pixstep()
  1359.   Add av_fill_image_max_pixstep() in imgutils.h.
  1360.  
  1361. 2010-08-17 - 4f2d2e4 - lavu 50.24.0 - AV_NE()
  1362.   Add the AV_NE macro.
  1363.  
  1364. 2010-08-17 - ad2c950 - lavfi 1.36.0 - audio framework
  1365.   Implement AVFilterBufferRefAudioProps struct for audio properties,
  1366.   get_audio_buffer(), filter_samples() functions and related changes.
  1367.  
  1368. 2010-08-12 - 81c1eca - lavcore 0.4.0 - av_get_image_linesize()
  1369.   Add av_get_image_linesize() in imgutils.h.
  1370.  
  1371. 2010-08-11 - c1db7bf - lavfi 1.34.0 - AVFilterBufferRef
  1372.   Resize data and linesize arrays in AVFilterBufferRef to 8.
  1373.  
  1374.   This change breaks libavfilter API/ABI.
  1375.  
  1376. 2010-08-11 - 9f08d80 - lavc 52.85.0 - av_picture_data_copy()
  1377.   Add av_picture_data_copy in avcodec.h.
  1378.  
  1379. 2010-08-11 - 84c0386 - lavfi 1.33.0 - avfilter_open()
  1380.   Change avfilter_open() signature:
  1381.   AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
  1382.   int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
  1383.  
  1384.   This change breaks libavfilter API/ABI.
  1385.  
  1386. 2010-08-11 - cc80caf - lavfi 1.32.0 - AVFilterBufferRef
  1387.   Add a type field to AVFilterBufferRef, and move video specific
  1388.   properties to AVFilterBufferRefVideoProps.
  1389.  
  1390.   This change breaks libavfilter API/ABI.
  1391.  
  1392. 2010-08-07 - 5d4890d - lavfi 1.31.0 - AVFilterLink
  1393.   Rename AVFilterLink fields:
  1394.   AVFilterLink.srcpic    ->  AVFilterLink.src_buf
  1395.   AVFilterLink.cur_pic   ->  AVFilterLink.cur_buf
  1396.   AVFilterLink.outpic    ->  AVFilterLink.out_buf
  1397.  
  1398. 2010-08-07 - 7fce481 - lavfi 1.30.0
  1399.   Rename functions and fields:
  1400.   avfilter_(un)ref_pic       -> avfilter_(un)ref_buffer
  1401.   avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
  1402.   AVFilterBufferRef.pic      -> AVFilterBufferRef.buffer
  1403.  
  1404. 2010-08-07 - ecc8dad - lavfi 1.29.0 - AVFilterBufferRef
  1405.   Rename AVFilterPicRef to AVFilterBufferRef.
  1406.  
  1407. 2010-08-07 - d54e094 - lavfi 1.28.0 - AVFilterBuffer
  1408.   Move format field from AVFilterBuffer to AVFilterPicRef.
  1409.  
  1410. 2010-08-06 - bf176f5 - lavcore 0.3.0 - av_check_image_size()
  1411.   Deprecate avcodec_check_dimensions() in favor of the function
  1412.   av_check_image_size() defined in libavcore/imgutils.h.
  1413.  
  1414. 2010-07-30 - 56b5e9d - lavfi 1.27.0 - AVFilterBuffer
  1415.   Increase size of the arrays AVFilterBuffer.data and
  1416.   AVFilterBuffer.linesize from 4 to 8.
  1417.  
  1418.   This change breaks libavfilter ABI.
  1419.  
  1420. 2010-07-29 - e7bd48a - lavcore 0.2.0 - imgutils.h
  1421.   Add functions av_fill_image_linesizes() and
  1422.   av_fill_image_pointers(), declared in libavcore/imgutils.h.
  1423.  
  1424. 2010-07-27 - 126b638 - lavcore 0.1.0 - parseutils.h
  1425.   Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
  1426.   defined in libavcodec in favor of the newly added functions
  1427.   av_parse_video_size() and av_parse_video_rate() declared in
  1428.   libavcore/parseutils.h.
  1429.  
  1430. 2010-07-23 - 4485247 - lavu 50.23.0 - mathematics.h
  1431.   Add the M_PHI constant definition.
  1432.  
  1433. 2010-07-22 - bdab614 - lavfi 1.26.0 - media format generalization
  1434.   Add a type field to AVFilterLink.
  1435.  
  1436.   Change the field types:
  1437.   enum PixelFormat format   -> int format   in AVFilterBuffer
  1438.   enum PixelFormat *formats -> int *formats in AVFilterFormats
  1439.   enum PixelFormat *format  -> int format   in AVFilterLink
  1440.  
  1441.   Change the function signatures:
  1442.   AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
  1443.   AVFilterFormats *avfilter_make_format_list(const int *fmts);
  1444.  
  1445.   int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
  1446.   int avfilter_add_format    (AVFilterFormats **avff, int fmt);
  1447.  
  1448.   AVFilterFormats *avfilter_all_colorspaces(void); ->
  1449.   AVFilterFormats *avfilter_all_formats    (enum AVMediaType type);
  1450.  
  1451.   This change breaks libavfilter API/ABI.
  1452.  
  1453. 2010-07-21 - aac6ca6 - lavcore 0.0.0
  1454.   Add libavcore.
  1455.  
  1456. 2010-07-17 - b5c582f - lavfi 1.25.0 - AVFilterBuffer
  1457.   Remove w and h fields from AVFilterBuffer.
  1458.  
  1459. 2010-07-17 - f0d77b2 - lavfi 1.24.0 - AVFilterBuffer
  1460.   Rename AVFilterPic to AVFilterBuffer.
  1461.  
  1462. 2010-07-17 - 57fe80f - lavf 52.74.0 - url_fskip()
  1463.   Make url_fskip() return an int error code instead of void.
  1464.  
  1465. 2010-07-11 - 23940f1 - lavc 52.83.0
  1466.   Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
  1467.   Add AVLPCType enum.
  1468.   Deprecate AVCodecContext.use_lpc.
  1469.  
  1470. 2010-07-11 - e1d7c88 - lavc 52.82.0 - avsubtitle_free()
  1471.   Add a function for free the contents of a AVSubtitle generated by
  1472.   avcodec_decode_subtitle.
  1473.  
  1474. 2010-07-11 - b91d08f - lavu 50.22.0 - bswap.h and intreadwrite.h
  1475.   Make the bswap.h and intreadwrite.h API public.
  1476.  
  1477. 2010-07-08 - ce1cd1c - lavu 50.21.0 - pixdesc.h
  1478.   Rename read/write_line() to av_read/write_image_line().
  1479.  
  1480. 2010-07-07 - 4d508e4 - lavfi 1.21.0 - avfilter_copy_picref_props()
  1481.   Add avfilter_copy_picref_props().
  1482.  
  1483. 2010-07-03 - 2d525ef - lavc 52.79.0
  1484.   Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
  1485.   FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
  1486.  
  1487. 2010-07-02 - 89eec74 - lavu 50.20.0 - lfg.h
  1488.   Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
  1489.   lfg.h.
  1490.  
  1491. 2010-06-28 - a52e2c3 - lavfi 1.20.1 - av_parse_color()
  1492.   Extend av_parse_color() syntax, make it accept an alpha value specifier and
  1493.   set the alpha value to 255 by default.
  1494.  
  1495. 2010-06-22 - 735cf6b - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
  1496.   Add priv_data_size and priv_data_class to URLProtocol.
  1497.  
  1498. 2010-06-22 - ffbb289 - lavf 52.70.0 - url_alloc(), url_connect()
  1499.   Add url_alloc() and url_connect().
  1500.  
  1501. 2010-06-22 - 9b07a2d - lavf 52.69.0 - av_register_protocol2()
  1502.   Add av_register_protocol2(), deprecating av_register_protocol().
  1503.  
  1504. 2010-06-09 - 65db058 - lavu 50.19.0 - av_compare_mod()
  1505.   Add av_compare_mod() to libavutil/mathematics.h.
  1506.  
  1507. 2010-06-05 - 0b99215 - lavu 50.18.0 - eval API
  1508.   Make the eval API public.
  1509.  
  1510. 2010-06-04 - 31878fc - lavu 50.17.0 - AV_BASE64_SIZE
  1511.   Add AV_BASE64_SIZE() macro.
  1512.  
  1513. 2010-06-02 - 7e566bb - lavc 52.73.0 - av_get_codec_tag_string()
  1514.   Add av_get_codec_tag_string().
  1515.  
  1516. 2010-06-01 - 2b99142 - lsws 0.11.0 - convertPalette API
  1517.   Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
  1518.  
  1519. 2010-05-26 - 93ebfee - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
  1520.   Add CODEC_CAP_EXPERIMENTAL flag.
  1521.   NOTE: this was backported to 0.6
  1522.  
  1523. 2010-05-23 - 9977863 - lavu 50.16.0 - av_get_random_seed()
  1524.   Add av_get_random_seed().
  1525.  
  1526. 2010-05-18 - 796ac23 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
  1527.   Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
  1528.   NOTE: this was backported to 0.6
  1529.  
  1530. 2010-05-09 - b6bc205 - lavfi 1.20.0 - AVFilterPicRef
  1531.   Add interlaced and top_field_first fields to AVFilterPicRef.
  1532.  
  1533. ------------------------------8<-------------------------------------
  1534.                    0.6 branch was cut here
  1535. ----------------------------->8--------------------------------------
  1536.  
  1537. 2010-05-01 - 8e2ee18 - lavf 52.62.0 - probe function
  1538.   Add av_probe_input_format2 to API, it allows ignoring probe
  1539.   results below given score and returns the actual probe score.
  1540.  
  1541. 2010-04-01 - 3dd6180 - lavf 52.61.0 - metadata API
  1542.   Add a flag for av_metadata_set2() to disable overwriting of
  1543.   existing tags.
  1544.  
  1545. 2010-04-01 - 0fb49b5 - lavc 52.66.0
  1546.   Add avcodec_get_edge_width().
  1547.  
  1548. 2010-03-31 - d103218 - lavc 52.65.0
  1549.   Add avcodec_copy_context().
  1550.  
  1551. 2010-03-31 - 1a70d12 - lavf 52.60.0 - av_match_ext()
  1552.   Make av_match_ext() public.
  1553.  
  1554. 2010-03-31 - 1149150 - lavu 50.14.0 - AVMediaType
  1555.   Move AVMediaType enum from libavcodec to libavutil.
  1556.  
  1557. 2010-03-31 - 72415b2 - lavc 52.64.0 - AVMediaType
  1558.   Define AVMediaType enum, and use it instead of enum CodecType, which
  1559.   is deprecated and will be dropped at the next major bump.
  1560.  
  1561. 2010-03-25 - 8795823 - lavu 50.13.0 - av_strerror()
  1562.   Implement av_strerror().
  1563.  
  1564. 2010-03-23 - e1484eb - lavc 52.60.0 - av_dct_init()
  1565.   Support DCT-I and DST-I.
  1566.  
  1567. 2010-03-15 - b8819c8 - lavf 52.56.0 - AVFormatContext.start_time_realtime
  1568.   Add AVFormatContext.start_time_realtime field.
  1569.  
  1570. 2010-03-13 - 5bb5c1d - lavfi 1.18.0 - AVFilterPicRef.pos
  1571.   Add AVFilterPicRef.pos field.
  1572.  
  1573. 2010-03-13 - 60c144f - lavu 50.12.0 - error.h
  1574.   Move error code definitions from libavcodec/avcodec.h to
  1575.   the new public header libavutil/error.h.
  1576.  
  1577. 2010-03-07 - c709483 - lavc 52.56.0 - avfft.h
  1578.   Add public FFT interface.
  1579.  
  1580. 2010-03-06 - ac6ef86 - lavu 50.11.0 - av_stristr()
  1581.   Add av_stristr().
  1582.  
  1583. 2010-03-03 - 4b83fc0 - lavu 50.10.0 - av_tree_enumerate()
  1584.   Add av_tree_enumerate().
  1585.  
  1586. 2010-02-07 - b687c1a - lavu 50.9.0 - av_compare_ts()
  1587.   Add av_compare_ts().
  1588.  
  1589. 2010-02-05 - 3f3dc76 - lsws 0.10.0 - sws_getCoefficients()
  1590.   Add sws_getCoefficients().
  1591.  
  1592. 2010-02-01 - ca76a11 - lavf 52.50.0 - metadata API
  1593.   Add a list of generic tag names, change 'author' -> 'artist',
  1594.   'year' -> 'date'.
  1595.  
  1596. 2010-01-30 - 80a07f6 - lavu 50.8.0 - av_get_pix_fmt()
  1597.   Add av_get_pix_fmt().
  1598.  
  1599. 2010-01-21 - 01cc47d - lsws 0.9.0 - sws_scale()
  1600.   Change constness attributes of sws_scale() parameters.
  1601.  
  1602. 2010-01-10 - 3fb8e77 - lavfi 1.15.0 - avfilter_graph_config_links()
  1603.   Add a log_ctx parameter to avfilter_graph_config_links().
  1604.  
  1605. 2010-01-07 - 8e9767f - lsws 0.8.0 - sws_isSupported{In,Out}put()
  1606.   Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
  1607.  
  1608. 2010-01-06 - c1d662f - lavfi 1.14.0 - avfilter_add_colorspace()
  1609.   Change the avfilter_add_colorspace() signature, make it accept an
  1610.   (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
  1611.  
  1612. 2010-01-03 - 4fd1f18 - lavfi 1.13.0 - avfilter_add_colorspace()
  1613.   Add avfilter_add_colorspace().
  1614.  
  1615. 2010-01-02 - 8eb631f - lavf 52.46.0 - av_match_ext()
  1616.   Add av_match_ext(), it should be used in place of match_ext().
  1617.  
  1618. 2010-01-01 - a1f547b - lavf 52.45.0 - av_guess_format()
  1619.   Add av_guess_format(), it should be used in place of guess_format().
  1620.  
  1621. 2009-12-13 - a181981 - lavf 52.43.0 - metadata API
  1622.   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
  1623.   AV_METADATA_DONT_STRDUP_VAL.
  1624.  
  1625. 2009-12-13 - 277c733 - lavu 50.7.0 - avstring.h API
  1626.   Add av_d2str().
  1627.  
  1628. 2009-12-13 - 02b398e - lavc 52.42.0 - AVStream
  1629.   Add avg_frame_rate.
  1630.  
  1631. 2009-12-12 - 3ba69a1 - lavu 50.6.0 - av_bmg_next()
  1632.   Introduce the av_bmg_next() function.
  1633.  
  1634. 2009-12-05 - a13a543 - lavfi 1.12.0 - avfilter_draw_slice()
  1635.   Add a slice_dir parameter to avfilter_draw_slice().
  1636.  
  1637. 2009-11-26 - 4cc3f6a - lavfi 1.11.0 - AVFilter
  1638.   Remove the next field from AVFilter, this is not anymore required.
  1639.  
  1640. 2009-11-25 - 1433c4a - lavfi 1.10.0 - avfilter_next()
  1641.   Introduce the avfilter_next() function.
  1642.  
  1643. 2009-11-25 - 86a60fa - lavfi 1.9.0 - avfilter_register()
  1644.   Change the signature of avfilter_register() to make it return an
  1645.   int. This is required since now the registration operation may fail.
  1646.  
  1647. 2009-11-25 - 74a0059 - lavu 50.5.0 - pixdesc.h API
  1648.   Make the pixdesc.h API public.
  1649.  
  1650. 2009-10-27 - 243110f - lavfi 1.5.0 - AVFilter.next
  1651.   Add a next field to AVFilter, this is used for simplifying the
  1652.   registration and management of the registered filters.
  1653.  
  1654. 2009-10-23 - cccd292 - lavfi 1.4.1 - AVFilter.description
  1655.   Add a description field to AVFilter.
  1656.  
  1657. 2009-10-19 - 6b5dc05 - lavfi 1.3.0 - avfilter_make_format_list()
  1658.   Change the interface of avfilter_make_format_list() from
  1659.   avfilter_make_format_list(int n, ...) to
  1660.   avfilter_make_format_list(enum PixelFormat *pix_fmts).
  1661.  
  1662. 2009-10-18 - 0eb4ff9 - lavfi 1.0.0 - avfilter_get_video_buffer()
  1663.   Make avfilter_get_video_buffer() recursive and add the w and h
  1664.   parameters to it.
  1665.  
  1666. 2009-10-07 - 46c40e4 - lavfi 0.5.1 - AVFilterPic
  1667.   Add w and h fields to AVFilterPic.
  1668.  
  1669. 2009-06-22 - 92400be - lavf 52.34.1 - AVFormatContext.packet_size
  1670.   This is now an unsigned int instead of a signed int.
  1671.  
  1672. 2009-06-19 - a4276ba - lavc 52.32.0 - AVSubtitle.pts
  1673.   Add a pts field to AVSubtitle which gives the subtitle packet pts
  1674.   in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
  1675.   not work right without this.
  1676.  
  1677. 2009-06-03 - 8f3f2e0 - lavc 52.30.2 - AV_PKT_FLAG_KEY
  1678.   PKT_FLAG_KEY has been deprecated and will be dropped at the next
  1679.   major version. Use AV_PKT_FLAG_KEY instead.
  1680.  
  1681. 2009-06-01 - f988ce6 - lavc 52.30.0 - av_lockmgr_register()
  1682.   av_lockmgr_register() can be used to register a callback function
  1683.   that lavc (and in the future, libraries that depend on lavc) can use
  1684.   to implement mutexes. The application should provide a callback function
  1685.   that implements the AV_LOCK_* operations described in avcodec.h.
  1686.   When the lock manager is registered, FFmpeg is guaranteed to behave
  1687.   correctly in a multi-threaded application.
  1688.  
  1689. 2009-04-30 - ce1d9c8 - lavc 52.28.0 - av_free_packet()
  1690.   av_free_packet() is no longer an inline function. It is now exported.
  1691.  
  1692. 2009-04-11 - 80d403f - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
  1693.   Please use NULL instead. This has been supported since r16506
  1694.   (lavf > 52.23.1, lavc > 52.10.0).
  1695.  
  1696. 2009-04-07 - 7a00bba - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
  1697.   The old decoding functions are deprecated, all new code should use the
  1698.   new functions avcodec_decode_video2(), avcodec_decode_audio3() and
  1699.   avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
  1700.   argument instead of a const uint8_t *buf / int buf_size pair.
  1701.  
  1702. 2009-04-03 - 7b09db3 - lavu 50.3.0 - av_fifo_space()
  1703.   Introduce the av_fifo_space() function.
  1704.  
  1705. 2009-04-02 - fabd246 - lavc 52.23.0 - AVPacket
  1706.   Move AVPacket declaration from libavformat/avformat.h to
  1707.   libavcodec/avcodec.h.
  1708.  
  1709. 2009-03-22 - 6e08ca9 - lavu 50.2.0 - RGB32 pixel formats
  1710.   Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
  1711.   PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
  1712.   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
  1713.   PIX_FMT_BGR32_1 are now macros.
  1714.   avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
  1715.   Re-sort the enum PixelFormat list accordingly.
  1716.   This change breaks API/ABI backward compatibility.
  1717.  
  1718. 2009-03-22 - f82674e - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
  1719.   Add the enum PixelFormat values:
  1720.   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
  1721.   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
  1722.  
  1723. 2009-03-21 - ee6624e - lavu 50.0.0  - av_random*
  1724.   The Mersenne Twister PRNG implemented through the av_random* functions
  1725.   was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
  1726.   instead.
  1727.  
  1728. 2009-03-08 - 41dd680 - lavu 50.0.0  - AVFifoBuffer
  1729.   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
  1730.   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
  1731.   and av_fifo_realloc2.
  1732.   In addition, the order of the function arguments of av_fifo_generic_read
  1733.   was changed to match av_fifo_generic_write.
  1734.   The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
  1735.   applications, they may not use sizeof() or directly access members.
  1736.  
  1737. 2009-03-01 - ec26457 - lavf 52.31.0 - Generic metadata API
  1738.   Introduce a new metadata API (see av_metadata_get() and friends).
  1739.   The old API is now deprecated and should not be used anymore. This especially
  1740.   includes the following structure fields:
  1741.     - AVFormatContext.title
  1742.     - AVFormatContext.author
  1743.     - AVFormatContext.copyright
  1744.     - AVFormatContext.comment
  1745.     - AVFormatContext.album
  1746.     - AVFormatContext.year
  1747.     - AVFormatContext.track
  1748.     - AVFormatContext.genre
  1749.     - AVStream.language
  1750.     - AVStream.filename
  1751.     - AVProgram.provider_name
  1752.     - AVProgram.name
  1753.     - AVChapter.title
  1754.