doc/APIchanges

   1 Never assume the API of libav* to be stable unless at least 1 month has passed
   2 since the last major version increase.
   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 libswscale:    2011-06-20
  11 libavutil:     2012-10-22
  12
  13
  14 API changes, most recent first:
  15
  16 2013-11-xx - xxxxxxx - lavc 55.25.0 - avcodec.h
  17   Add ITU-R BT.2020 and other not yet included values to color primaries,
  18   transfer characteristics and colorspaces.
  19
  20 2013-08-xx - xxxxxxx - lavu 52.17.0 - avframe.h
  21   Add AVFrame.flags and AV_FRAME_FLAG_CORRUPT.
  22
  23 2013-08-xx - xxxxxxx - lavfi 3.11.0 - avfilter.h
  24   Add AVFilterGraph.execute and AVFilterGraph.opaque for custom slice threading
  25   implementations.
  26
  27 2013-09-21 - xxxxxxx - lavu 52.16.0 - pixfmt.h
  28   Add interleaved 4:2:2 8/10-bit formats AV_PIX_FMT_NV16 and
  29   AV_PIX_FMT_NV20.
  30
  31 2013-09-16 - 3feb3d6 - lavu 52.15.0 - mem.h
  32   Add av_reallocp.
  33
  34 2013-08-10 - 5a9a9d4 - lavc 55.16.0 - avcodec.h
  35   Extend AVPacket API with av_packet_unref, av_packet_ref,
  36   av_packet_move_ref, av_packet_copy_props, av_packet_free_side_data.
  37
  38 2013-08-05 - f824535 - lavc 55.13.0 - avcodec.h
  39   Deprecate the bitstream-related members from struct AVVDPAUContext.
  40   The bistream buffers no longer need to be explicitly freed.
  41
  42 2013-08-05 - 549294f - lavc 55.12.0 - avcodec.h
  43   Deprecate the CODEC_CAP_HWACCEL_VDPAU codec capability. Use CODEC_CAP_HWACCEL
  44   and select the AV_PIX_FMT_VDPAU format with get_format() instead.
  45
  46 2013-08-05 - a0ad5d0 - lavu 52.14.0 - pixfmt.h
  47   Deprecate AV_PIX_FMT_VDPAU_*. Use AV_PIX_FMT_VDPAU instead.
  48
  49 2013-08-02 - a8b1927 - lavc 55.11.0 - avcodec.h
  50   Add output_picture_number to AVCodecParserContext.
  51
  52 2013-06-24 - 95d5246 - lavc 55.10.0 - avcodec.h
  53   Add MPEG-2 AAC profiles
  54
  55 2013-06-04 - fc962d4 - lavu 52.13.0 - mem.h
  56   Add av_realloc_array and av_reallocp_array
  57
  58 2013-05-24 - 129bb23 - lavfi 3.10.0 - avfilter.h
  59   Add support for slice multithreading to lavfi. Filters supporting threading
  60   are marked with AVFILTER_FLAG_SLICE_THREADS.
  61   New fields AVFilterContext.thread_type, AVFilterGraph.thread_type and
  62   AVFilterGraph.nb_threads (accessible directly or through AVOptions) may be
  63   used to configure multithreading.
  64
  65 2013-05-24 - 2a6eaea - lavu 52.12.0 - cpu.h
  66   Add av_cpu_count() function for getting the number of logical CPUs.
  67
  68 2013-05-24 - b493847 - lavc 55.7.0 - avcodec.h
  69   Add picture_structure to AVCodecParserContext.
  70
  71 2013-05-15 - e6c4ac7 - lavu 52.11.0 - pixdesc.h
  72   Replace PIX_FMT_* flags with AV_PIX_FMT_FLAG_*.
  73
  74 2013-04-03 - 507b1e4 - lavc 55.4.0 - avcodec.h
  75   Add field_order to AVCodecParserContext.
  76
  77 2013-04-19 - 5e83d9a - lavc 55.2.0 - avcodec.h
  78   Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
  79
  80 2013-04-11 - lavfi 3.8.0
  81   38f0c07 - Move all content from avfiltergraph.h to avfilter.h. Deprecate
  82             avfilterhraph.h, user applications should include just avfilter.h
  83   bc1a985 - Add avfilter_graph_alloc_filter(), deprecate avfilter_open() and
  84             avfilter_graph_add_filter().
  85   1113672 - Add AVFilterContext.graph pointing to the AVFilterGraph that contains the
  86             filter.
  87   48a5ada - Add avfilter_init_str(), deprecate avfilter_init_filter().
  88   1ba95a9 - Add avfilter_init_dict().
  89   7cdd737 - Add AVFilter.flags field and AVFILTER_FLAG_DYNAMIC_{INPUTS,OUTPUTS} flags.
  90   7e8fe4b - Add avfilter_pad_count() for counting filter inputs/outputs.
  91   fa2a34c - Add avfilter_next(), deprecate av_filter_next().
  92             Deprecate avfilter_uninit().
  93
  94 2013-04-09 - lavfi 3.7.0 - avfilter.h
  95   b439c99 - Add AVFilter.priv_class for exporting filter options through the
  96             AVOptions API in the similar way private options work in lavc and lavf.
  97   8114c10 - Add avfilter_get_class().
  98   Switch all filters to use AVOptions.
  99
 100 2013-03-19 - 2c328a9 - lavu 52.9.0 - pixdesc.h
 101   Add av_pix_fmt_count_planes() function for counting planes in a pixel format.
 102
 103 2013-03-16 - 42c7c61 - lavfi 3.6.0
 104   Add AVFilterGraph.nb_filters, deprecate AVFilterGraph.filter_count.
 105
 106 2013-03-08 - Reference counted buffers - lavu 52.8.0, lavc 55.0.0, lavf 55.0.0,
 107 lavd 54.0.0, lavfi 3.5.0
 108   8e401db, 1cec062 - add a new API for reference counted buffers and buffer
 109                      pools (new header libavutil/buffer.h).
 110   1afddbe - add AVPacket.buf to allow reference counting for the AVPacket data.
 111             Add av_packet_from_data() function for constructing packets from
 112             av_malloc()ed data.
 113   7ecc2d4 - move AVFrame from lavc to lavu (new header libavutil/frame.h), add
 114             AVFrame.buf/extended_buf to allow reference counting for the AVFrame
 115             data. Add new API for working with reference-counted AVFrames.
 116   759001c - add the refcounted_frames field to AVCodecContext to make audio and
 117             video decoders return reference-counted frames. Add get_buffer2()
 118             callback to AVCodecContext which allocates reference-counted frames.
 119             Add avcodec_default_get_buffer2() as the default get_buffer2()
 120             implementation.
 121             Deprecate AVCodecContext.get_buffer() / release_buffer() /
 122             reget_buffer(), avcodec_default_get_buffer(),
 123             avcodec_default_reget_buffer(), avcodec_default_release_buffer().
 124             Remove avcodec_default_free_buffers(), which should not have ever
 125             been called from outside of lavc.
 126             Deprecate the following AVFrame fields:
 127                 * base -- is now stored in AVBufferRef
 128                 * reference, type, buffer_hints -- are unnecessary in the new API
 129                 * hwaccel_picture_private, owner, thread_opaque -- should not
 130                   have been acessed from outside of lavc
 131                 * qscale_table, qstride, qscale_type, mbskip_table, motion_val,
 132                   mb_type, dct_coeff, ref_index -- mpegvideo-specific tables,
 133                   which are not exported anymore.
 134   7e35037 - switch libavfilter to use AVFrame instead of AVFilterBufferRef. Add
 135             av_buffersrc_add_frame(), deprecate av_buffersrc_buffer().
 136             Add av_buffersink_get_frame() and av_buffersink_get_samples(),
 137             deprecate av_buffersink_read() and av_buffersink_read_samples().
 138             Deprecate AVFilterBufferRef and all functions for working with it.
 139
 140 2013-03-17 - 12c5c1d - lavu 52.8.0 - avstring.h
 141   Add av_isdigit, av_isgraph, av_isspace, av_isxdigit.
 142
 143 2013-02-23 - 9f12235 - lavfi 3.4.0 - avfiltergraph.h
 144   Add resample_lavr_opts to AVFilterGraph for setting libavresample options
 145   for auto-inserted resample filters.
 146
 147 2013-01-25 - 38c1466 - lavu 52.7.0 - dict.h
 148   Add av_dict_parse_string() to set multiple key/value pairs at once from a
 149   string.
 150
 151 2013-01-25 - b85a5e8 - lavu 52.6.0 - avstring.h
 152   Add av_strnstr()
 153
 154 2013-01-15 - 8ee288d - lavu 52.5.0 - hmac.h
 155   Add AVHMAC.
 156
 157 2013-01-13 - 44e065d - lavc 54.36.0 - vdpau.h
 158   Add AVVDPAUContext struct for VDPAU hardware-accelerated decoding.
 159
 160 2013-01-12 - 169fb94 - lavu 52.4.0 - pixdesc.h
 161   Add AV_PIX_FMT_VDPAU flag.
 162
 163 2013-01-07 - 074a00d - lavr 1.1.0
 164   Add avresample_set_channel_mapping() for input channel reordering,
 165   duplication, and silencing.
 166
 167 2012-12-29 - d8fd06c - lavu 52.3.0 - avstring.h
 168   Add av_basename() and av_dirname().
 169
 170 2012-11-11 - 5980f5d - lavu 52.2.0 - audioconvert.h
 171   Rename audioconvert.h to channel_layout.h. audioconvert.h is now deprecated.
 172
 173 2012-11-05 - dfde8a3 - lavu 52.1.0 - intmath.h
 174   Add av_ctz() for trailing zero bit count
 175
 176 2012-10-21 - a893655 - lavu 51.45.0 - error.h
 177   Add AVERROR_EXPERIMENTAL
 178
 179 2012-10-12 - d2fcb35 - lavu 51.44.0 - pixdesc.h
 180   Add functions for accessing pixel format descriptors.
 181   Accessing the av_pix_fmt_descriptors array directly is now
 182   deprecated.
 183
 184 2012-10-11 - 9a92aea - lavu 51.43.0 - aes.h, md5.h, sha.h, tree.h
 185   Add functions for allocating the opaque contexts for the algorithms,
 186   deprecate the context size variables.
 187
 188 2012-10-10 - b522000 - lavf 54.18.0 - avio.h
 189   Add avio_closep to complement avio_close.
 190
 191 2012-10-08 - 78071a1 - lavu 51.42.0 - pixfmt.h
 192   Rename PixelFormat to AVPixelFormat and all PIX_FMT_* to AV_PIX_FMT_*.
 193   To provide backwards compatibility, PixelFormat is now #defined as
 194   AVPixelFormat.
 195   Note that this can break user code that includes pixfmt.h and uses the
 196   'PixelFormat' identifier. Such code should either #undef PixelFormat
 197   or stop using the PixelFormat name.
 198
 199 2012-10-05 - e7ba5b1 - lavr 1.0.0 - avresample.h
 200   Data planes parameters to avresample_convert() and
 201   avresample_read() are now uint8_t** instead of void**.
 202   Libavresample is now stable.
 203
 204 2012-09-24 - a42aada - lavc 54.28.0 - avcodec.h
 205   Add avcodec_free_frame(). This function must now
 206   be used for freeing an AVFrame.
 207
 208 2012-09-12 - 8919fee - lavu 51.41.0 - audioconvert.h
 209   Added AV_CH_LOW_FREQUENCY_2 channel mask value.
 210
 211 2012-09-04 - 686a329 - lavu 51.40.0 - opt.h
 212   Reordered the fields in default_val in AVOption, changed which
 213   default_val field is used for which AVOptionType.
 214
 215 2012-08-30 - a231832 - lavc 54.26.1 - avcodec.h
 216   Add codec descriptor properties AV_CODEC_PROP_LOSSY and
 217   AV_CODEC_PROP_LOSSLESS.
 218
 219 2012-08-18 - lavc 54.26 - avcodec.h
 220   Add codec descriptors for accessing codec properties without having
 221   to refer to a specific decoder or encoder.
 222
 223   c223d79 - Add an AVCodecDescriptor struct and functions
 224             avcodec_descriptor_get() and avcodec_descriptor_next().
 225   51efed1 - Add AVCodecDescriptor.props and AV_CODEC_PROP_INTRA_ONLY.
 226   91e59fe - Add avcodec_descriptor_get_by_name().
 227
 228
 229 2012-08-08 - 1d9c2dc - lavu 51.39 - avutil.h
 230   Don't implicitly include libavutil/common.h in avutil.h
 231
 232 2012-08-08 - 987170c - lavu 51.38 - dict.h
 233   Add av_dict_count().
 234
 235 2012-08-07 - 104e10f - lavc 54.25 - avcodec.h
 236   Rename CodecID to AVCodecID and all CODEC_ID_* to AV_CODEC_ID_*.
 237   To provide backwards compatibility, CodecID is now #defined as AVCodecID.
 238   Note that this can break user code that includes avcodec.h and uses the
 239   'CodecID' identifier. Such code should either #undef CodecID or stop using the
 240   CodecID name.
 241
 242 2012-08-03 - 239fdf1 - lavu 51.37.1 - cpu.h
 243                        lsws 2.1.1   - swscale.h
 244   Rename AV_CPU_FLAG_MMX2  ---> AV_CPU_FLAG_MMXEXT.
 245   Rename SWS_CPU_CAPS_MMX2 ---> SWS_CPU_CAPS_MMXEXT.
 246
 247 2012-07-29 - 681ed00 - lavf 54.13.0 - avformat.h
 248   Add AVFMT_FLAG_NOBUFFER for low latency use cases.
 249
 250 2012-07-20 - b70d89a - lavfi 3.0.0 - avfilter.h
 251   Add avfilter_unref_bufferp().
 252
 253 2012-07-10 - 5fade8a - lavu 51.37.0
 254   Add av_malloc_array() and av_mallocz_array()
 255
 256 2012-06-22 - d3d3a32 - lavu 51.34.0
 257   Add av_usleep()
 258
 259 2012-06-20 - ae0a301 - lavu 51.33.0
 260   Move av_gettime() to libavutil, add libavutil/time.h
 261
 262 2012-06-09 - 3971be0 - lavr 0.0.3
 263   Add a parameter to avresample_build_matrix() for Dolby/DPLII downmixing.
 264
 265 2012-06-12 - 9baeff9 - lavfi 2.23.0 - avfilter.h
 266   Add AVFilterContext.nb_inputs/outputs. Deprecate
 267   AVFilterContext.input/output_count.
 268
 269 2012-06-12 - 84b9fbe - lavfi 2.22.0 - avfilter.h
 270   Add avfilter_pad_get_type() and avfilter_pad_get_name(). Those
 271   should now be used instead of accessing AVFilterPad members
 272   directly.
 273
 274 2012-06-12 - b0f0dfc - lavu 51.32.0 - audioconvert.h
 275   Add av_get_channel_layout_channel_index(), av_get_channel_name()
 276   and av_channel_layout_extract_channel().
 277
 278 2012-05-25 - 154486f - lavu 51.31.0 - opt.h
 279   Add av_opt_set_bin()
 280
 281 2012-05-26 - e9cef89 - lavf 54.3.0
 282   Add AVFMT_TS_NONSTRICT format flag to indicate that a muxer supports
 283   non-increasing monotone timestamps.
 284
 285 2012-05-15 - lavfi 2.17.0
 286   Add support for audio filters
 287   ac71230/a2cd9be - add video/audio buffer sink in a new installed
 288                     header buffersink.h
 289   720c6b7 - add av_buffersrc_write_frame(), deprecate
 290             av_vsrc_buffer_add_frame()
 291   ab16504 - add avfilter_copy_buf_props()
 292   9453c9e - add extended_data to AVFilterBuffer
 293   1b8c927 - add avfilter_get_audio_buffer_ref_from_arrays()
 294
 295 2012-05-09 - lavu 51.30.0 - samplefmt.h
 296   142e740 - add av_samples_copy()
 297   6d7f617 - add av_samples_set_silence()
 298
 299 2012-05-09 - a5117a2 - lavc 54.13.1
 300   For audio formats with fixed frame size, the last frame
 301   no longer needs to be padded with silence, libavcodec
 302   will handle this internally (effectively all encoders
 303   behave as if they had CODEC_CAP_SMALL_LAST_FRAME set).
 304
 305 2012-05-07 - 828bd08 - lavc 54.13.0 - avcodec.h
 306   Add sample_rate and channel_layout fields to AVFrame.
 307
 308 2012-05-01 - 4010d72 - lavr 0.0.1
 309   Change AV_MIX_COEFF_TYPE_Q6 to AV_MIX_COEFF_TYPE_Q8.
 310
 311 2012-04-25 - 3527a73 - lavu 51.29.0 - cpu.h
 312   Add av_parse_cpu_flags()
 313
 314 2012-04-24 - c8af852 - lavr 0.0.0
 315   Add libavresample audio conversion library
 316
 317 2012-04-20 - 0c0d1bc - lavu 51.28.0 - audio_fifo.h
 318   Add audio FIFO functions:
 319     av_audio_fifo_free()
 320     av_audio_fifo_alloc()
 321     av_audio_fifo_realloc()
 322     av_audio_fifo_write()
 323     av_audio_fifo_read()
 324     av_audio_fifo_drain()
 325     av_audio_fifo_reset()
 326     av_audio_fifo_size()
 327     av_audio_fifo_space()
 328
 329 2012-04-14 - lavfi 2.16.0 - avfiltergraph.h
 330   d7bcc71 Add avfilter_graph_parse2().
 331   91d3cbe Add avfilter_inout_alloc() and avfilter_inout_free().
 332
 333 2012-04-08 - 4d693b0 - lavu 51.27.0 - samplefmt.h
 334   Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()
 335
 336 2012-04-05 - 5cc51a5 - lavu 51.26.0 - audioconvert.h
 337   Add av_get_default_channel_layout()
 338
 339 2012-03-20 - 3c90cc2 - lavfo 54.2.0
 340   Deprecate av_read_packet(), use av_read_frame() with
 341   AVFMT_FLAG_NOPARSE | AVFMT_FLAG_NOFILLIN in AVFormatContext.flags
 342
 343 2012-03-06 - 4d851f8 - lavu 51.25.0 - cpu.h
 344   Add av_set_cpu_flags_mask().
 345
 346 2012-03-05 - lavc 54.8.0
 347   6699d07 Add av_get_exact_bits_per_sample()
 348   9524cf7 Add av_get_audio_frame_duration()
 349
 350 2012-03-04 - 44fe77b - lavc 54.7.0 - avcodec.h
 351   Add av_codec_is_encoder/decoder().
 352
 353 2012-03-01 - 442c132 - lavc 54.3.0 - avcodec.h
 354   Add av_packet_shrink_side_data.
 355
 356 2012-02-29 - dd2a4bc - lavf 54.2.0 - avformat.h
 357   Add AVStream.attached_pic and AV_DISPOSITION_ATTACHED_PIC,
 358   used for dealing with attached pictures/cover art.
 359
 360 2012-02-25 - c9bca80 - lavu 51.24.0 - error.h
 361   Add AVERROR_UNKNOWN
 362   NOTE: this was backported to 0.8
 363
 364 2012-02-20 - e9cda85 - lavc 54.2.0
 365   Add duration field to AVCodecParserContext
 366
 367 2012-02-20 - 0b42a93 - lavu 51.23.1 - mathematics.h
 368   Add av_rescale_q_rnd()
 369
 370 2012-02-08 - 38d5533 - lavu 51.22.1 - pixdesc.h
 371   Add PIX_FMT_PSEUDOPAL flag.
 372
 373 2012-02-08 - 52f82a1 - lavc 54.01.0
 374   Add avcodec_encode_video2() and deprecate avcodec_encode_video().
 375
 376 2012-02-01 - 316fc74 - lavc 54.01.0
 377   Add av_fast_padded_malloc() as alternative for av_realloc() when aligned
 378   memory is required. The buffer will always have FF_INPUT_BUFFER_PADDING_SIZE
 379   zero-padded bytes at the end.
 380
 381 2012-01-31 - dd6d3b0 - lavf 54.01.0
 382   Add avformat_get_riff_video_tags() and avformat_get_riff_audio_tags().
 383   NOTE: this was backported to 0.8
 384
 385 2012-01-31 - af08d9a - lavc 54.01.0
 386   Add avcodec_is_open() function.
 387   NOTE: this was backported to 0.8
 388
 389 2012-01-30 - 8b93312 - lavu 51.22.0 - intfloat.h
 390   Add a new installed header libavutil/intfloat.h with int/float punning
 391   functions.
 392   NOTE: this was backported to 0.8
 393
 394 2012-01-25 - lavf 53.22.0
 395   f1caf01 Allow doing av_write_frame(ctx, NULL) for flushing possible
 396           buffered data within a muxer. Added AVFMT_ALLOW_FLUSH for
 397           muxers supporting it (av_write_frame makes sure it is called
 398           only for muxers with this flag).
 399
 400 ------------------------------8<-------------------------------------
 401                    0.8 branch was cut here
 402 ----------------------------->8--------------------------------------
 403
 404 2012-01-15 - lavc 53.34.0
 405   New audio encoding API:
 406   b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio
 407           encoders.
 408   5ee5fa0 Add avcodec_fill_audio_frame() as a convenience function.
 409   b2c75b6 Add avcodec_encode_audio2() and deprecate avcodec_encode_audio().
 410           Add AVCodec.encode2().
 411
 412 2012-01-12 - 3167dc9 - lavfi 2.15.0
 413   Add a new installed header -- libavfilter/version.h -- with version macros.
 414
 415 2011-01-03 - b73ec05 - lavu 51.21.0
 416   Add av_popcount64
 417
 418 2011-12-25 - lavfi 2.14.0
 419   e1d9dbf Add a new installed header - buffersrc.h
 420   It contains a new function av_buffersrc_buffer() that allows passing
 421   frames to the 'buffer' filter, but unlike av_vsrc_buffer_add_frame()
 422   it allows for direct rendering.
 423   1c9e340 Add avfilter_copy_frame_props() for copying properties from
 424   AVFrame to AVFilterBufferRef.
 425
 426 2011-12-25 - lavc 53.31.0
 427   Add the following new fields to AVFrame:
 428     b58dbb5 sample_aspect_ratio
 429     3a2ddf7 width, height
 430     8a4a5f6 format
 431
 432 2011-12-18 - 8400b12 - lavc 53.28.1
 433   Deprecate AVFrame.age. The field is unused.
 434
 435 2011-12-12 - 5266045 - lavf 53.17.0
 436   Add avformat_close_input().
 437   Deprecate av_close_input_file() and av_close_input_stream().
 438
 439 2011-12-02 - 0eea212 - lavc 53.25.0
 440   Add nb_samples and extended_data fields to AVFrame.
 441   Deprecate AVCODEC_MAX_AUDIO_FRAME_SIZE.
 442   Deprecate avcodec_decode_audio3() in favor of avcodec_decode_audio4().
 443   avcodec_decode_audio4() writes output samples to an AVFrame, which allows
 444   audio decoders to use get_buffer().
 445
 446 2011-12-04 - 560f773 - lavc 53.24.0
 447   Change AVFrame.data[4]/base[4]/linesize[4]/error[4] to [8] at next major bump.
 448   Change AVPicture.data[4]/linesize[4] to [8] at next major bump.
 449   Change AVCodecContext.error[4] to [8] at next major bump.
 450   Add AV_NUM_DATA_POINTERS to simplify the bump transition.
 451
 452 2011-11-23 - bbb46f3 - lavu 51.18.0
 453   Add av_samples_get_buffer_size(), av_samples_fill_arrays(), and
 454   av_samples_alloc(), to samplefmt.h.
 455
 456 2011-11-23 - 8889cc4 - lavu 51.17.0
 457   Add planar sample formats and av_sample_fmt_is_planar() to samplefmt.h.
 458
 459 2011-11-19 - f3a29b7 - lavc 53.21.0
 460   Move some AVCodecContext fields to a new private struct, AVCodecInternal,
 461   which is accessed from a new field, AVCodecContext.internal.
 462   - fields moved:
 463       AVCodecContext.internal_buffer       --> AVCodecInternal.buffer
 464       AVCodecContext.internal_buffer_count --> AVCodecInternal.buffer_count
 465       AVCodecContext.is_copy               --> AVCodecInternal.is_copy
 466
 467 2011-11-16 - 6270671 - lavu 51.16.0
 468   Add av_timegm()
 469
 470 2011-11-13 - lavf 53.15.0
 471   New interrupt callback API, allowing per-AVFormatContext/AVIOContext
 472   interrupt callbacks.
 473   6aa0b98 Add AVIOInterruptCB struct and the interrupt_callback field to
 474           AVFormatContext.
 475   1dee0ac Add avio_open2() with additional parameters. Those are
 476           an interrupt callback and an options AVDictionary.
 477           This will allow passing AVOptions to protocols after lavf
 478           54.0.
 479
 480 2011-11-06 - ba04ecf - lavu 51.14.0
 481   Add av_strcasecmp() and av_strncasecmp() to avstring.h.
 482
 483 2011-11-06 - 07b172f - lavu 51.13.0
 484   Add av_toupper()/av_tolower()
 485
 486 2011-11-05 - b6d08f4 - lavf 53.13.0
 487   Add avformat_network_init()/avformat_network_deinit()
 488
 489 2011-10-27 - 512557b - lavc 53.15.0
 490   Remove avcodec_parse_frame.
 491   Deprecate AVCodecContext.parse_only and CODEC_CAP_PARSE_ONLY.
 492
 493 2011-10-19 - 569129a - lavf 53.10.0
 494   Add avformat_new_stream(). Deprecate av_new_stream().
 495
 496 2011-10-13 - b631fba - lavf 53.9.0
 497   Add AVFMT_NO_BYTE_SEEK AVInputFormat flag.
 498
 499 2011-10-12 - lavu 51.12.0
 500   AVOptions API rewrite.
 501
 502   - 145f741 FF_OPT_TYPE* renamed to AV_OPT_TYPE_*
 503   - new setting/getting functions with slightly different semantics:
 504         dac66da av_set_string3 -> av_opt_set
 505                 av_set_double  -> av_opt_set_double
 506                 av_set_q       -> av_opt_set_q
 507                 av_set_int     -> av_opt_set_int
 508
 509         41d9d51 av_get_string  -> av_opt_get
 510                 av_get_double  -> av_opt_get_double
 511                 av_get_q       -> av_opt_get_q
 512                 av_get_int     -> av_opt_get_int
 513
 514   - 8c5dcaa trivial rename av_next_option -> av_opt_next
 515   - 641c7af new functions - av_opt_child_next, av_opt_child_class_next
 516     and av_opt_find2()
 517
 518 2011-09-03 - fb4ca26 - lavc 53.10.0
 519                        lavf 53.6.0
 520                        lsws  2.1.0
 521   Add {avcodec,avformat,sws}_get_class().
 522
 523 2011-09-03 - c11fb82 - lavu 51.10.0
 524   Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
 525
 526 2011-08-26 - lavu 51.9.0
 527   - f2011ed Add av_fifo_peek2(), deprecate av_fifo_peek().
 528   - add41de..abc78a5 Do not include intfloat_readwrite.h,
 529     mathematics.h, rational.h, pixfmt.h, or log.h from avutil.h.
 530
 531 2011-08-16 - 48f9e45 - lavf 53.4.0
 532   Add avformat_query_codec().
 533
 534 2011-08-16 - bca06e7 - lavc 53.8.0
 535   Add avcodec_get_type().
 536
 537 2011-08-06 - 2f63440 - lavf 53.4.0
 538   Add error_recognition to AVFormatContext.
 539
 540 2011-08-02 - 9d39cbf - lavc 53.7.1
 541   Add AV_PKT_FLAG_CORRUPT AVPacket flag.
 542
 543 2011-07-10 - a67c061 - lavf 53.3.0
 544   Add avformat_find_stream_info(), deprecate av_find_stream_info().
 545   NOTE: this was backported to 0.7
 546
 547 2011-07-10 - 0b950fe - lavc 53.6.0
 548   Add avcodec_open2(), deprecate avcodec_open().
 549   NOTE: this was backported to 0.7
 550
 551   Add avcodec_alloc_context3. Deprecate avcodec_alloc_context() and
 552   avcodec_alloc_context2().
 553
 554 2011-06-23 - 67e9ae1 - lavu 51.8.0 - attributes.h
 555   Add av_printf_format().
 556
 557 ------------------------------8<-------------------------------------
 558                    0.7 branch was cut here
 559 ----------------------------->8--------------------------------------
 560
 561 2011-06-16 - 05e84c9, 25de595 - lavf 53.2.0 - avformat.h
 562   Add avformat_open_input and avformat_write_header().
 563   Deprecate av_open_input_stream, av_open_input_file,
 564   AVFormatParameters and av_write_header.
 565
 566 2011-06-16 - 7e83e1c, dc59ec5 - lavu 51.7.0 - opt.h
 567   Add av_opt_set_dict() and av_opt_find().
 568   Deprecate av_find_opt().
 569   Add AV_DICT_APPEND flag.
 570
 571 2011-06-10 - cb7c11c - lavu 51.6.0 - opt.h
 572   Add av_opt_flag_is_set().
 573
 574 2011-06-08 - d9f80ea - lavu 51.5.0 - AVMetadata
 575   Move AVMetadata from lavf to lavu and rename it to
 576   AVDictionary -- new installed header dict.h.
 577   All av_metadata_* functions renamed to av_dict_*.
 578
 579 2011-06-07 - a6703fa - lavu 51.4.0 - av_get_bytes_per_sample()
 580   Add av_get_bytes_per_sample() in libavutil/samplefmt.h.
 581   Deprecate av_get_bits_per_sample_fmt().
 582
 583 2011-06-05 - b39b062 - lavu 51.3.0 - opt.h
 584   Add av_opt_free convenience function.
 585
 586 2011-05-28 - 0420bd7 - lavu 51.2.0 - pixdesc.h
 587   Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
 588   avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
 589
 590 2011-05-25 - 30315a8 - lavf 53.1.0 - avformat.h
 591   Add fps_probe_size to AVFormatContext.
 592
 593 2011-05-18 - 64150ff - lavc 53.4.0 - AVCodecContext.request_sample_fmt
 594   Add request_sample_fmt field to AVCodecContext.
 595
 596 2011-05-10 - 188dea1 - lavc 53.3.0 - avcodec.h
 597   Deprecate AVLPCType and the following fields in
 598   AVCodecContext: lpc_coeff_precision, prediction_order_method,
 599   min_partition_order, max_partition_order, lpc_type, lpc_passes.
 600   Corresponding FLAC encoder options should be used instead.
 601
 602 2011-04-26 - bebe72f - lavu 51.1.0 - avutil.h
 603   Add AVPictureType enum and av_get_picture_type_char(), deprecate
 604   FF_*_TYPE defines and av_get_pict_type_char() defined in
 605   libavcodec/avcodec.h.
 606
 607 2011-04-26 - 10d3940 - lavfi 2.3.0 - avfilter.h
 608   Add pict_type and key_frame fields to AVFilterBufferRefVideo.
 609
 610 2011-04-26 - 7a11c82 - lavfi 2.2.0 - vsrc_buffer
 611   Add sample_aspect_ratio fields to vsrc_buffer arguments
 612
 613 2011-04-21 - 94f7451 - lavc 53.1.0 - avcodec.h
 614   Add CODEC_CAP_SLICE_THREADS for codecs supporting sliced threading.
 615
 616 2011-04-15 - lavc 52.120.0 - avcodec.h
 617   AVPacket structure got additional members for passing side information:
 618     4de339e introduce side information for AVPacket
 619     2d8591c make containers pass palette change in AVPacket
 620
 621 2011-04-12 - lavf 52.107.0 - avio.h
 622   Avio cleanup, part II - deprecate the entire URLContext API:
 623     175389c add avio_check as a replacement for url_exist
 624     ff1ec0c add avio_pause and avio_seek_time as replacements
 625             for _av_url_read_fseek/fpause
 626     cdc6a87 deprecate av_protocol_next(), avio_enum_protocols
 627             should be used instead.
 628     80c6e23 rename url_set_interrupt_cb->avio_set_interrupt_cb.
 629     f87b1b3 rename open flags: URL_* -> AVIO_*
 630     f8270bb add avio_enum_protocols.
 631     5593f03 deprecate URLProtocol.
 632     c486dad deprecate URLContext.
 633     026e175 deprecate the typedef for URLInterruptCB
 634     8e76a19 deprecate av_register_protocol2.
 635     b840484 deprecate URL_PROTOCOL_FLAG_NESTED_SCHEME
 636     1305d93 deprecate av_url_read_seek
 637     fa104e1 deprecate av_url_read_pause
 638     727c7aa deprecate url_get_filename().
 639     5958df3 deprecate url_max_packet_size().
 640     1869ea0 deprecate url_get_file_handle().
 641     32a97d4 deprecate url_filesize().
 642     e52a914 deprecate url_close().
 643     58a48c6 deprecate url_seek().
 644     925e908 deprecate url_write().
 645     dce3756 deprecate url_read_complete().
 646     bc371ac deprecate url_read().
 647     0589da0 deprecate url_open().
 648     62eaaea deprecate url_connect.
 649     5652bb9 deprecate url_alloc.
 650     333e894 deprecate url_open_protocol
 651     e230705 deprecate url_poll and URLPollEntry
 652
 653 2011-04-10 - lavu  50.40.0 - pixfmt.h
 654   Add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE pixel formats
 655
 656 2011-04-08 - lavf 52.106.0 - avformat.h
 657   Minor avformat.h cleanup:
 658     a9bf9d8 deprecate av_guess_image2_codec
 659     c3675df rename avf_sdp_create->av_sdp_create
 660
 661 2011-04-03 - lavf 52.105.0 - avio.h
 662   Large-scale renaming/deprecating of AVIOContext-related functions:
 663     724f6a0 deprecate url_fdopen
 664     403ee83 deprecate url_open_dyn_packet_buf
 665     6dc7d80 rename url_close_dyn_buf       -> avio_close_dyn_buf
 666     b92c545 rename url_open_dyn_buf        -> avio_open_dyn_buf
 667     8978fed introduce an AVIOContext.seekable field as a replacement for
 668             AVIOContext.is_streamed and url_is_streamed()
 669     b64030f deprecate get_checksum()
 670     4c4427a deprecate init_checksum()
 671     4ec153b deprecate udp_set_remote_url/get_local_port
 672     933e90a deprecate av_url_read_fseek/fpause
 673     8d9769a deprecate url_fileno
 674     b7f2fdd rename put_flush_packet -> avio_flush
 675     35f1023 deprecate url_close_buf
 676     83fddae deprecate url_open_buf
 677     d9d86e0 rename url_fprintf -> avio_printf
 678     59f65d9 deprecate url_setbufsize
 679     3e68b3b deprecate url_ferror
 680     66e5b1d deprecate url_feof
 681     e8bb2e2 deprecate url_fget_max_packet_size
 682     76aa876 rename url_fsize -> avio_size
 683     e519753 deprecate url_fgetc
 684     655e45e deprecate url_fgets
 685     a2704c9 rename url_ftell -> avio_tell
 686     e16ead0 deprecate get_strz() in favor of avio_get_str
 687     0300db8,2af07d3 rename url_fskip -> avio_skip
 688     6b4aa5d rename url_fseek -> avio_seek
 689     61840b4 deprecate put_tag
 690     22a3212 rename url_fopen/fclose -> avio_open/close.
 691     0ac8e2b deprecate put_nbyte
 692     77eb550 rename put_byte          -> avio_w8
 693                    put_[b/l]e<type>  -> avio_w[b/l]<type>
 694                    put_buffer        -> avio_write
 695     b7effd4 rename get_byte          -> avio_r8,
 696                    get_[b/l]e<type>  -> avio_r[b/l]<type>
 697                    get_buffer        -> avio_read
 698     b3db9ce deprecate get_partial_buffer
 699     8d9ac96 rename av_alloc_put_byte -> avio_alloc_context
 700
 701 2011-03-25 - 34b47d7 - lavc 52.115.0 - AVCodecContext.audio_service_type
 702   Add audio_service_type field to AVCodecContext.
 703
 704 2011-03-02 - 863c471 - lavf  52.103.0 - av_pkt_dump2, av_pkt_dump_log2
 705   Add new functions av_pkt_dump2, av_pkt_dump_log2 that uses the
 706   source stream timebase for outputting timestamps. Deprecate
 707   av_pkt_dump and av_pkt_dump_log.
 708
 709 2011-02-20 - e731b8d - lavf  52.102.0 - avio.h
 710   * e731b8d - rename init_put_byte() to ffio_init_context(), deprecating the
 711               original, and move it to a private header so it is no longer
 712               part of our public API. Instead, use av_alloc_put_byte().
 713   * ae628ec - rename ByteIOContext to AVIOContext.
 714
 715 2011-02-16 - 09d171b - lavf  52.101.0 - avformat.h
 716                        lavu  52.39.0  - parseutils.h
 717   * 610219a - Add av_ prefix to dump_format().
 718   * f6c7375 - Replace parse_date() in lavf with av_parse_time() in lavu.
 719   * ab0287f - Move find_info_tag from lavf to lavu and add av_prefix to it.
 720
 721 2011-02-15 - lavu 52.38.0 - merge libavcore
 722   libavcore is merged back completely into libavutil
 723
 724 2011-02-10 - 55bad0c - lavc 52.113.0 - vbv_delay
 725   Add vbv_delay field to AVCodecContext
 726
 727 2011-02-14 - 24a83bd - lavf 52.100.0 - AV_DISPOSITION_CLEAN_EFFECTS
 728   Add AV_DISPOSITION_CLEAN_EFFECTS disposition flag.
 729
 730 2011-02-14 - 910b5b8 - lavfi 1.76.0 - AVFilterLink sample_aspect_ratio
 731   Add sample_aspect_ratio field to AVFilterLink.
 732
 733 2011-02-10 - 12c14cd - lavf 52.99.0 - AVStream.disposition
 734   Add AV_DISPOSITION_HEARING_IMPAIRED and AV_DISPOSITION_VISUAL_IMPAIRED.
 735
 736 2011-02-09 - 5592734 - lavc 52.112.0 - avcodec_thread_init()
 737   Deprecate avcodec_thread_init()/avcodec_thread_free() use; instead
 738   set thread_count before calling avcodec_open.
 739
 740 2011-02-09 - 778b08a - lavc 52.111.0 - threading API
 741   Add CODEC_CAP_FRAME_THREADS with new restrictions on get_buffer()/
 742   release_buffer()/draw_horiz_band() callbacks for appropriate codecs.
 743   Add thread_type and active_thread_type fields to AVCodecContext.
 744
 745 2011-02-08 - 3940caa - lavf 52.98.0 - av_probe_input_buffer
 746   Add av_probe_input_buffer() to avformat.h for probing format from a
 747   ByteIOContext.
 748
 749 2011-02-06 - fe174fc - lavf 52.97.0 - avio.h
 750   Add flag for non-blocking protocols: URL_FLAG_NONBLOCK
 751
 752 2011-02-04 - f124b08 - lavf 52.96.0 - avformat_free_context()
 753   Add avformat_free_context() in avformat.h.
 754
 755 2011-02-03 - f5b82f4 - lavc 52.109.0 - add CODEC_ID_PRORES
 756   Add CODEC_ID_PRORES to avcodec.h.
 757
 758 2011-02-03 - fe9a3fb - lavc 52.109.0 - H.264 profile defines
 759   Add defines for H.264 * Constrained Baseline and Intra profiles
 760
 761 2011-02-02 - lavf 52.95.0
 762   * 50196a9 - add a new installed header version.h.
 763   * 4efd5cf, dccbd97, 93b78d1 - add several variants of public
 764     avio_{put,get}_str* functions.  Deprecate corresponding semi-public
 765     {put,get}_str*.
 766
 767 2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h
 768   Make av_dlog public.
 769
 770 2011-01-15 - a242ac3 - lavfi 1.74.0 - AVFilterBufferRefAudioProps
 771   Rename AVFilterBufferRefAudioProps.samples_nb to nb_samples.
 772
 773 2011-01-14 - 7f88a5b - lavf 52.93.0 - av_metadata_copy()
 774   Add av_metadata_copy() in avformat.h.
 775
 776 2011-01-07 - 81c623f - lavc 52.107.0 - deprecate reordered_opaque
 777   Deprecate reordered_opaque in favor of pkt_pts/dts.
 778
 779 2011-01-07 - 1919fea - lavc 52.106.0 - pkt_dts
 780   Add pkt_dts to AVFrame, this will in the future allow multithreading decoders
 781   to not mess up dts.
 782
 783 2011-01-07 - 393cbb9 - lavc 52.105.0 - pkt_pts
 784   Add pkt_pts to AVFrame.
 785
 786 2011-01-07 - 060ec0a - lavc 52.104.0 - av_get_profile_name()
 787   Add av_get_profile_name to libavcodec/avcodec.h.
 788
 789 2010-12-27 - 0ccabee - lavfi 1.71.0 - AV_PERM_NEG_LINESIZES
 790   Add AV_PERM_NEG_LINESIZES in avfilter.h.
 791
 792 2010-12-27 - 9128ae0 - lavf 52.91.0 - av_find_best_stream()
 793   Add av_find_best_stream to libavformat/avformat.h.
 794
 795 2010-12-27 - 107a7e3 - lavf 52.90.0
 796   Add AVFMT_NOSTREAMS flag for formats with no streams,
 797   like e.g. text metadata.
 798
 799 2010-12-22 - 0328b9e - lavu 50.36.0 - file.h
 800   Add functions av_file_map() and av_file_unmap() in file.h.
 801
 802 2010-12-19 - 0bc55f5 - lavu 50.35.0 - error.h
 803   Add "not found" error codes:
 804   AVERROR_DEMUXER_NOT_FOUND
 805   AVERROR_MUXER_NOT_FOUND
 806   AVERROR_DECODER_NOT_FOUND
 807   AVERROR_ENCODER_NOT_FOUND
 808   AVERROR_PROTOCOL_NOT_FOUND
 809   AVERROR_FILTER_NOT_FOUND
 810   AVERROR_BSF_NOT_FOUND
 811   AVERROR_STREAM_NOT_FOUND
 812
 813 2010-12-09 - c61cdd0 - lavcore 0.16.0 - avcore.h
 814   Move AV_NOPTS_VALUE, AV_TIME_BASE, AV_TIME_BASE_Q symbols from
 815   avcodec.h to avcore.h.
 816
 817 2010-12-04 - 16cfc96 - lavc 52.98.0 - CODEC_CAP_NEG_LINESIZES
 818   Add CODEC_CAP_NEG_LINESIZES codec capability flag in avcodec.h.
 819
 820 2010-12-04 - bb4afa1 - lavu 50.34.0 - av_get_pix_fmt_string()
 821   Deprecate avcodec_pix_fmt_string() in favor of
 822   pixdesc.h/av_get_pix_fmt_string().
 823
 824 2010-12-04 - 4da12e3 - lavcore 0.15.0 - av_image_alloc()
 825   Add av_image_alloc() to libavcore/imgutils.h.
 826
 827 2010-12-02 - 037be76 - lavfi 1.67.0 - avfilter_graph_create_filter()
 828   Add function avfilter_graph_create_filter() in avfiltergraph.h.
 829
 830 2010-11-25 - 4723bc2 - lavfi 1.65.0 - avfilter_get_video_buffer_ref_from_arrays()
 831   Add function avfilter_get_video_buffer_ref_from_arrays() in
 832   avfilter.h.
 833
 834 2010-11-21 - 176a615 - lavcore 0.14.0 - audioconvert.h
 835   Add a public audio channel API in audioconvert.h, and deprecate the
 836   corresponding functions in libavcodec:
 837   avcodec_get_channel_name()
 838   avcodec_get_channel_layout()
 839   avcodec_get_channel_layout_string()
 840   avcodec_channel_layout_num_channels()
 841   and the CH_* macros defined in libavcodec/avcodec.h.
 842
 843 2010-11-21 - 6bfc268 - lavf 52.85.0 - avformat.h
 844   Add av_append_packet().
 845
 846 2010-11-21 - a08d918 - lavc 52.97.0 - avcodec.h
 847   Add av_grow_packet().
 848
 849 2010-11-17 - 0985e1a - lavcore 0.13.0 - parseutils.h
 850   Add av_parse_color() declared in libavcore/parseutils.h.
 851
 852 2010-11-13 - cb2c971 - lavc 52.95.0 - AVCodecContext
 853   Add AVCodecContext.subtitle_header and AVCodecContext.subtitle_header_size
 854   fields.
 855
 856 2010-11-13 - 5aaea02 - lavfi 1.62.0 - avfiltergraph.h
 857   Make avfiltergraph.h public.
 858
 859 2010-11-13 - 4fcbb2a - lavfi 1.61.0 - avfiltergraph.h
 860   Remove declarations from avfiltergraph.h for the functions:
 861   avfilter_graph_check_validity()
 862   avfilter_graph_config_links()
 863   avfilter_graph_config_formats()
 864   which are now internal.
 865   Use avfilter_graph_config() instead.
 866
 867 2010-11-08 - d2af720 - lavu 50.33.0 - eval.h
 868   Deprecate functions:
 869   av_parse_and_eval_expr(),
 870   av_parse_expr(),
 871   av_eval_expr(),
 872   av_free_expr(),
 873   in favor of the functions:
 874   av_expr_parse_and_eval(),
 875   av_expr_parse(),
 876   av_expr_eval(),
 877   av_expr_free().
 878
 879 2010-11-08 - 24de0ed - lavfi 1.59.0 - avfilter_free()
 880   Rename avfilter_destroy() to avfilter_free().
 881   This change breaks libavfilter API/ABI.
 882
 883 2010-11-07 - 1e80a0e - lavfi 1.58.0 - avfiltergraph.h
 884   Remove graphparser.h header, move AVFilterInOut and
 885   avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
 886
 887 2010-11-07 - 7313132 - lavfi 1.57.0 - AVFilterInOut
 888   Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
 889   This change breaks libavfilter API.
 890
 891 2010-11-04 - 97dd1e4 - lavfi 1.56.0 - avfilter_graph_free()
 892   Rename avfilter_graph_destroy() to avfilter_graph_free().
 893   This change breaks libavfilter API/ABI.
 894
 895 2010-11-04 - e15aeea - lavfi 1.55.0 - avfilter_graph_alloc()
 896   Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
 897
 898 2010-11-02 - 6f84cd1 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
 899   Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
 900   deprecate av_get_bits_per_sample_format().
 901
 902 2010-11-02 - d63e456 - lavcore 0.11.0 - samplefmt.h
 903   Add sample format functions in libavcore/samplefmt.h:
 904   av_get_sample_fmt_name(),
 905   av_get_sample_fmt(),
 906   av_get_sample_fmt_string(),
 907   and deprecate the corresponding libavcodec/audioconvert.h functions:
 908   avcodec_get_sample_fmt_name(),
 909   avcodec_get_sample_fmt(),
 910   avcodec_sample_fmt_string().
 911
 912 2010-11-02 - 262d1c5 - lavcore 0.10.0 - samplefmt.h
 913   Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
 914   SampleFormat.
 915
 916 2010-10-16 - 2a24df9 - lavfi 1.52.0 - avfilter_graph_config()
 917   Add the function avfilter_graph_config() in avfiltergraph.h.
 918
 919 2010-10-15 - 03700d3 - lavf 52.83.0 - metadata API
 920   Change demuxers to export metadata in generic format and
 921   muxers to accept generic format. Deprecate the public
 922   conversion API.
 923
 924 2010-10-10 - 867ae7a - lavfi 1.49.0 - AVFilterLink.time_base
 925   Add time_base field to AVFilterLink.
 926
 927 2010-09-27 - c85eef4 - lavu 50.31.0 - av_set_options_string()
 928   Move av_set_options_string() from libavfilter/parseutils.h to
 929   libavutil/opt.h.
 930
 931 2010-09-27 - acc0490 - lavfi 1.47.0 - AVFilterLink
 932   Make the AVFilterLink fields srcpad and dstpad store the pointers to
 933   the source and destination pads, rather than their indexes.
 934
 935 2010-09-27 - 372e288 - lavu 50.30.0 - av_get_token()
 936   Move av_get_token() from libavfilter/parseutils.h to
 937   libavutil/avstring.h.
 938
 939 2010-09-26 - 635d4ae - lsws 0.12.0 - swscale.h
 940   Add the functions sws_alloc_context() and sws_init_context().
 941
 942 2010-09-26 - 6ed0404 - lavu 50.29.0 - opt.h
 943   Move libavcodec/opt.h to libavutil/opt.h.
 944
 945 2010-09-24 - 1c1c80f - lavu 50.28.0 - av_log_set_flags()
 946   Default of av_log() changed due to many problems to the old no repeat
 947   detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
 948   enabling it for your app!.
 949
 950 2010-09-24 - f66eb58 - lavc 52.90.0 - av_opt_show2()
 951   Deprecate av_opt_show() in favor or av_opt_show2().
 952
 953 2010-09-14 - bc6f0af - lavu 50.27.0 - av_popcount()
 954   Add av_popcount() to libavutil/common.h.
 955
 956 2010-09-08 - c6c98d0 - lavu 50.26.0 - av_get_cpu_flags()
 957   Add av_get_cpu_flags().
 958
 959 2010-09-07 - 34017fd - lavcore 0.9.0 - av_image_copy()
 960   Add av_image_copy().
 961
 962 2010-09-07 - 9686abb - lavcore 0.8.0 - av_image_copy_plane()
 963   Add av_image_copy_plane().
 964
 965 2010-09-07 - 9b7269e - lavcore 0.7.0 - imgutils.h
 966   Adopt hierarchical scheme for the imgutils.h function names,
 967   deprecate the old names.
 968
 969 2010-09-04 - 7160bb7 - lavu 50.25.0 - AV_CPU_FLAG_*
 970   Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
 971   of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
 972
 973 2010-08-26 - 5da19b5 - lavc 52.87.0 - avcodec_get_channel_layout()
 974   Add avcodec_get_channel_layout() in audioconvert.h.
 975
 976 2010-08-20 - e344336 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
 977   Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
 978
 979 2010-08-18 - a6ddf8b - lavcore 0.5.0 - av_fill_image_max_pixstep()
 980   Add av_fill_image_max_pixstep() in imgutils.h.
 981
 982 2010-08-17 - 4f2d2e4 - lavu 50.24.0 - AV_NE()
 983   Add the AV_NE macro.
 984
 985 2010-08-17 - ad2c950 - lavfi 1.36.0 - audio framework
 986   Implement AVFilterBufferRefAudioProps struct for audio properties,
 987   get_audio_buffer(), filter_samples() functions and related changes.
 988
 989 2010-08-12 - 81c1eca - lavcore 0.4.0 - av_get_image_linesize()
 990   Add av_get_image_linesize() in imgutils.h.
 991
 992 2010-08-11 - c1db7bf - lavfi 1.34.0 - AVFilterBufferRef
 993   Resize data and linesize arrays in AVFilterBufferRef to 8.
 994
 995   This change breaks libavfilter API/ABI.
 996
 997 2010-08-11 - 9f08d80 - lavc 52.85.0 - av_picture_data_copy()
 998   Add av_picture_data_copy in avcodec.h.
 999
1000 2010-08-11 - 84c0386 - lavfi 1.33.0 - avfilter_open()
1001   Change avfilter_open() signature:
1002   AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
1003   int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
1004
1005   This change breaks libavfilter API/ABI.
1006
1007 2010-08-11 - cc80caf - lavfi 1.32.0 - AVFilterBufferRef
1008   Add a type field to AVFilterBufferRef, and move video specific
1009   properties to AVFilterBufferRefVideoProps.
1010
1011   This change breaks libavfilter API/ABI.
1012
1013 2010-08-07 - 5d4890d - lavfi 1.31.0 - AVFilterLink
1014   Rename AVFilterLink fields:
1015   AVFilterLink.srcpic    ->  AVFilterLink.src_buf
1016   AVFilterLink.cur_pic   ->  AVFilterLink.cur_buf
1017   AVFilterLink.outpic    ->  AVFilterLink.out_buf
1018
1019 2010-08-07 - 7fce481 - lavfi 1.30.0
1020   Rename functions and fields:
1021   avfilter_(un)ref_pic       -> avfilter_(un)ref_buffer
1022   avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
1023   AVFilterBufferRef.pic      -> AVFilterBufferRef.buffer
1024
1025 2010-08-07 - ecc8dad - lavfi 1.29.0 - AVFilterBufferRef
1026   Rename AVFilterPicRef to AVFilterBufferRef.
1027
1028 2010-08-07 - d54e094 - lavfi 1.28.0 - AVFilterBuffer
1029   Move format field from AVFilterBuffer to AVFilterPicRef.
1030
1031 2010-08-06 - bf176f5 - lavcore 0.3.0 - av_check_image_size()
1032   Deprecate avcodec_check_dimensions() in favor of the function
1033   av_check_image_size() defined in libavcore/imgutils.h.
1034
1035 2010-07-30 - 56b5e9d - lavfi 1.27.0 - AVFilterBuffer
1036   Increase size of the arrays AVFilterBuffer.data and
1037   AVFilterBuffer.linesize from 4 to 8.
1038
1039   This change breaks libavfilter ABI.
1040
1041 2010-07-29 - e7bd48a - lavcore 0.2.0 - imgutils.h
1042   Add functions av_fill_image_linesizes() and
1043   av_fill_image_pointers(), declared in libavcore/imgutils.h.
1044
1045 2010-07-27 - 126b638 - lavcore 0.1.0 - parseutils.h
1046   Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
1047   defined in libavcodec in favor of the newly added functions
1048   av_parse_video_size() and av_parse_video_rate() declared in
1049   libavcore/parseutils.h.
1050
1051 2010-07-23 - 4485247 - lavu 50.23.0 - mathematics.h
1052   Add the M_PHI constant definition.
1053
1054 2010-07-22 - bdab614 - lavfi 1.26.0 - media format generalization
1055   Add a type field to AVFilterLink.
1056
1057   Change the field types:
1058   enum PixelFormat format   -> int format   in AVFilterBuffer
1059   enum PixelFormat *formats -> int *formats in AVFilterFormats
1060   enum PixelFormat *format  -> int format   in AVFilterLink
1061
1062   Change the function signatures:
1063   AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
1064   AVFilterFormats *avfilter_make_format_list(const int *fmts);
1065
1066   int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
1067   int avfilter_add_format    (AVFilterFormats **avff, int fmt);
1068
1069   AVFilterFormats *avfilter_all_colorspaces(void); ->
1070   AVFilterFormats *avfilter_all_formats    (enum AVMediaType type);
1071
1072   This change breaks libavfilter API/ABI.
1073
1074 2010-07-21 - aac6ca6 - lavcore 0.0.0
1075   Add libavcore.
1076
1077 2010-07-17 - b5c582f - lavfi 1.25.0 - AVFilterBuffer
1078   Remove w and h fields from AVFilterBuffer.
1079
1080 2010-07-17 - f0d77b2 - lavfi 1.24.0 - AVFilterBuffer
1081   Rename AVFilterPic to AVFilterBuffer.
1082
1083 2010-07-17 - 57fe80f - lavf 52.74.0 - url_fskip()
1084   Make url_fskip() return an int error code instead of void.
1085
1086 2010-07-11 - 23940f1 - lavc 52.83.0
1087   Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
1088   Add AVLPCType enum.
1089   Deprecate AVCodecContext.use_lpc.
1090
1091 2010-07-11 - e1d7c88 - lavc 52.82.0 - avsubtitle_free()
1092   Add a function for free the contents of a AVSubtitle generated by
1093   avcodec_decode_subtitle.
1094
1095 2010-07-11 - b91d08f - lavu 50.22.0 - bswap.h and intreadwrite.h
1096   Make the bswap.h and intreadwrite.h API public.
1097
1098 2010-07-08 - ce1cd1c - lavu 50.21.0 - pixdesc.h
1099   Rename read/write_line() to av_read/write_image_line().
1100
1101 2010-07-07 - 4d508e4 - lavfi 1.21.0 - avfilter_copy_picref_props()
1102   Add avfilter_copy_picref_props().
1103
1104 2010-07-03 - 2d525ef - lavc 52.79.0
1105   Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
1106   FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
1107
1108 2010-07-02 - 89eec74 - lavu 50.20.0 - lfg.h
1109   Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
1110   lfg.h.
1111
1112 2010-06-28 - a52e2c3 - lavfi 1.20.1 - av_parse_color()
1113   Extend av_parse_color() syntax, make it accept an alpha value specifier and
1114   set the alpha value to 255 by default.
1115
1116 2010-06-22 - 735cf6b - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
1117   Add priv_data_size and priv_data_class to URLProtocol.
1118
1119 2010-06-22 - ffbb289 - lavf 52.70.0 - url_alloc(), url_connect()
1120   Add url_alloc() and url_connect().
1121
1122 2010-06-22 - 9b07a2d - lavf 52.69.0 - av_register_protocol2()
1123   Add av_register_protocol2(), deprecating av_register_protocol().
1124
1125 2010-06-09 - 65db058 - lavu 50.19.0 - av_compare_mod()
1126   Add av_compare_mod() to libavutil/mathematics.h.
1127
1128 2010-06-05 - 0b99215 - lavu 50.18.0 - eval API
1129   Make the eval API public.
1130
1131 2010-06-04 - 31878fc - lavu 50.17.0 - AV_BASE64_SIZE
1132   Add AV_BASE64_SIZE() macro.
1133
1134 2010-06-02 - 7e566bb - lavc 52.73.0 - av_get_codec_tag_string()
1135   Add av_get_codec_tag_string().
1136
1137 2010-06-01 - 2b99142 - lsws 0.11.0 - convertPalette API
1138   Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
1139
1140 2010-05-26 - 93ebfee - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
1141   Add CODEC_CAP_EXPERIMENTAL flag.
1142   NOTE: this was backported to 0.6
1143
1144 2010-05-23 - 9977863 - lavu 50.16.0 - av_get_random_seed()
1145   Add av_get_random_seed().
1146
1147 2010-05-18 - 796ac23 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
1148   Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
1149   NOTE: this was backported to 0.6
1150
1151 2010-05-09 - b6bc205 - lavfi 1.20.0 - AVFilterPicRef
1152   Add interlaced and top_field_first fields to AVFilterPicRef.
1153
1154 ------------------------------8<-------------------------------------
1155                    0.6 branch was cut here
1156 ----------------------------->8--------------------------------------
1157
1158 2010-05-01 - 8e2ee18 - lavf 52.62.0 - probe function
1159   Add av_probe_input_format2 to API, it allows ignoring probe
1160   results below given score and returns the actual probe score.
1161
1162 2010-04-01 - 3dd6180 - lavf 52.61.0 - metadata API
1163   Add a flag for av_metadata_set2() to disable overwriting of
1164   existing tags.
1165
1166 2010-04-01 - 0fb49b5 - lavc 52.66.0
1167   Add avcodec_get_edge_width().
1168
1169 2010-03-31 - d103218 - lavc 52.65.0
1170   Add avcodec_copy_context().
1171
1172 2010-03-31 - 1a70d12 - lavf 52.60.0 - av_match_ext()
1173   Make av_match_ext() public.
1174
1175 2010-03-31 - 1149150 - lavu 50.14.0 - AVMediaType
1176   Move AVMediaType enum from libavcodec to libavutil.
1177
1178 2010-03-31 - 72415b2 - lavc 52.64.0 - AVMediaType
1179   Define AVMediaType enum, and use it instead of enum CodecType, which
1180   is deprecated and will be dropped at the next major bump.
1181
1182 2010-03-25 - 8795823 - lavu 50.13.0 - av_strerror()
1183   Implement av_strerror().
1184
1185 2010-03-23 - e1484eb - lavc 52.60.0 - av_dct_init()
1186   Support DCT-I and DST-I.
1187
1188 2010-03-15 - b8819c8 - lavf 52.56.0 - AVFormatContext.start_time_realtime
1189   Add AVFormatContext.start_time_realtime field.
1190
1191 2010-03-13 - 5bb5c1d - lavfi 1.18.0 - AVFilterPicRef.pos
1192   Add AVFilterPicRef.pos field.
1193
1194 2010-03-13 - 60c144f - lavu 50.12.0 - error.h
1195   Move error code definitions from libavcodec/avcodec.h to
1196   the new public header libavutil/error.h.
1197
1198 2010-03-07 - c709483 - lavc 52.56.0 - avfft.h
1199   Add public FFT interface.
1200
1201 2010-03-06 - ac6ef86 - lavu 50.11.0 - av_stristr()
1202   Add av_stristr().
1203
1204 2010-03-03 - 4b83fc0 - lavu 50.10.0 - av_tree_enumerate()
1205   Add av_tree_enumerate().
1206
1207 2010-02-07 - b687c1a - lavu 50.9.0 - av_compare_ts()
1208   Add av_compare_ts().
1209
1210 2010-02-05 - 3f3dc76 - lsws 0.10.0 - sws_getCoefficients()
1211   Add sws_getCoefficients().
1212
1213 2010-02-01 - ca76a11 - lavf 52.50.0 - metadata API
1214   Add a list of generic tag names, change 'author' -> 'artist',
1215   'year' -> 'date'.
1216
1217 2010-01-30 - 80a07f6 - lavu 50.8.0 - av_get_pix_fmt()
1218   Add av_get_pix_fmt().
1219
1220 2010-01-21 - 01cc47d - lsws 0.9.0 - sws_scale()
1221   Change constness attributes of sws_scale() parameters.
1222
1223 2010-01-10 - 3fb8e77 - lavfi 1.15.0 - avfilter_graph_config_links()
1224   Add a log_ctx parameter to avfilter_graph_config_links().
1225
1226 2010-01-07 - 8e9767f - lsws 0.8.0 - sws_isSupported{In,Out}put()
1227   Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
1228
1229 2010-01-06 - c1d662f - lavfi 1.14.0 - avfilter_add_colorspace()
1230   Change the avfilter_add_colorspace() signature, make it accept an
1231   (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
1232
1233 2010-01-03 - 4fd1f18 - lavfi 1.13.0 - avfilter_add_colorspace()
1234   Add avfilter_add_colorspace().
1235
1236 2010-01-02 - 8eb631f - lavf 52.46.0 - av_match_ext()
1237   Add av_match_ext(), it should be used in place of match_ext().
1238
1239 2010-01-01 - a1f547b - lavf 52.45.0 - av_guess_format()
1240   Add av_guess_format(), it should be used in place of guess_format().
1241
1242 2009-12-13 - a181981 - lavf 52.43.0 - metadata API
1243   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
1244   AV_METADATA_DONT_STRDUP_VAL.
1245
1246 2009-12-13 - 277c733 - lavu 50.7.0 - avstring.h API
1247   Add av_d2str().
1248
1249 2009-12-13 - 02b398e - lavc 52.42.0 - AVStream
1250   Add avg_frame_rate.
1251
1252 2009-12-12 - 3ba69a1 - lavu 50.6.0 - av_bmg_next()
1253   Introduce the av_bmg_next() function.
1254
1255 2009-12-05 - a13a543 - lavfi 1.12.0 - avfilter_draw_slice()
1256   Add a slice_dir parameter to avfilter_draw_slice().
1257
1258 2009-11-26 - 4cc3f6a - lavfi 1.11.0 - AVFilter
1259   Remove the next field from AVFilter, this is not anymore required.
1260
1261 2009-11-25 - 1433c4a - lavfi 1.10.0 - avfilter_next()
1262   Introduce the avfilter_next() function.
1263
1264 2009-11-25 - 86a60fa - lavfi 1.9.0 - avfilter_register()
1265   Change the signature of avfilter_register() to make it return an
1266   int. This is required since now the registration operation may fail.
1267
1268 2009-11-25 - 74a0059 - lavu 50.5.0 - pixdesc.h API
1269   Make the pixdesc.h API public.
1270
1271 2009-10-27 - 243110f - lavfi 1.5.0 - AVFilter.next
1272   Add a next field to AVFilter, this is used for simplifying the
1273   registration and management of the registered filters.
1274
1275 2009-10-23 - cccd292 - lavfi 1.4.1 - AVFilter.description
1276   Add a description field to AVFilter.
1277
1278 2009-10-19 - 6b5dc05 - lavfi 1.3.0 - avfilter_make_format_list()
1279   Change the interface of avfilter_make_format_list() from
1280   avfilter_make_format_list(int n, ...) to
1281   avfilter_make_format_list(enum PixelFormat *pix_fmts).
1282
1283 2009-10-18 - 0eb4ff9 - lavfi 1.0.0 - avfilter_get_video_buffer()
1284   Make avfilter_get_video_buffer() recursive and add the w and h
1285   parameters to it.
1286
1287 2009-10-07 - 46c40e4 - lavfi 0.5.1 - AVFilterPic
1288   Add w and h fields to AVFilterPic.
1289
1290 2009-06-22 - 92400be - lavf 52.34.1 - AVFormatContext.packet_size
1291   This is now an unsigned int instead of a signed int.
1292
1293 2009-06-19 - a4276ba - lavc 52.32.0 - AVSubtitle.pts
1294   Add a pts field to AVSubtitle which gives the subtitle packet pts
1295   in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
1296   not work right without this.
1297
1298 2009-06-03 - 8f3f2e0 - lavc 52.30.2 - AV_PKT_FLAG_KEY
1299   PKT_FLAG_KEY has been deprecated and will be dropped at the next
1300   major version. Use AV_PKT_FLAG_KEY instead.
1301
1302 2009-06-01 - f988ce6 - lavc 52.30.0 - av_lockmgr_register()
1303   av_lockmgr_register() can be used to register a callback function
1304   that lavc (and in the future, libraries that depend on lavc) can use
1305   to implement mutexes. The application should provide a callback function
1306   that implements the AV_LOCK_* operations described in avcodec.h.
1307   When the lock manager is registered, FFmpeg is guaranteed to behave
1308   correctly in a multi-threaded application.
1309
1310 2009-04-30 - ce1d9c8 - lavc 52.28.0 - av_free_packet()
1311   av_free_packet() is no longer an inline function. It is now exported.
1312
1313 2009-04-11 - 80d403f - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
1314   Please use NULL instead. This has been supported since r16506
1315   (lavf > 52.23.1, lavc > 52.10.0).
1316
1317 2009-04-07 - 7a00bba - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
1318   The old decoding functions are deprecated, all new code should use the
1319   new functions avcodec_decode_video2(), avcodec_decode_audio3() and
1320   avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
1321   argument instead of a const uint8_t *buf / int buf_size pair.
1322
1323 2009-04-03 - 7b09db3 - lavu 50.3.0 - av_fifo_space()
1324   Introduce the av_fifo_space() function.
1325
1326 2009-04-02 - fabd246 - lavc 52.23.0 - AVPacket
1327   Move AVPacket declaration from libavformat/avformat.h to
1328   libavcodec/avcodec.h.
1329
1330 2009-03-22 - 6e08ca9 - lavu 50.2.0 - RGB32 pixel formats
1331   Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
1332   PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
1333   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
1334   PIX_FMT_BGR32_1 are now macros.
1335   avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
1336   Re-sort the enum PixelFormat list accordingly.
1337   This change breaks API/ABI backward compatibility.
1338
1339 2009-03-22 - f82674e - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
1340   Add the enum PixelFormat values:
1341   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
1342   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
1343
1344 2009-03-21 - ee6624e - lavu 50.0.0  - av_random*
1345   The Mersenne Twister PRNG implemented through the av_random* functions
1346   was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
1347   instead.
1348
1349 2009-03-08 - 41dd680 - lavu 50.0.0  - AVFifoBuffer
1350   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
1351   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
1352   and av_fifo_realloc2.
1353   In addition, the order of the function arguments of av_fifo_generic_read
1354   was changed to match av_fifo_generic_write.
1355   The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
1356   applications, they may not use sizeof() or directly access members.
1357
1358 2009-03-01 - ec26457 - lavf 52.31.0 - Generic metadata API
1359   Introduce a new metadata API (see av_metadata_get() and friends).
1360   The old API is now deprecated and should not be used anymore. This especially
1361   includes the following structure fields:
1362     - AVFormatContext.title
1363     - AVFormatContext.author
1364     - AVFormatContext.copyright
1365     - AVFormatContext.comment
1366     - AVFormatContext.album
1367     - AVFormatContext.year
1368     - AVFormatContext.track
1369     - AVFormatContext.genre
1370     - AVStream.language
1371     - AVStream.filename
1372     - AVProgram.provider_name
1373     - AVProgram.name
1374     - AVChapter.title