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  1. Never assume the API of libav* to be stable unless at least 1 week has passed since
  2. the last major version increase.
  3. The last version increases were:
  4. libavcodec: ?
  5. libavdevice: ?
  6. libavfilter: 2009-10-18
  7. libavformat: ?
  8. libpostproc: ?
  9. libswscale: ?
  10. libavutil: 2009-03-08
  11. API changes, most recent first:
  12. 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
  13. Add sws_convertPalette8ToPacked32 and sws_convertPalette8ToPacked24
  14. 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
  15. Add CODEC_CAP_EXPERIMENTAL flag.
  16. 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed
  17. Add av_get_random_seed()
  18. 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
  19. Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags
  20. 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
  21. Add interlaced and top_field_first fields to AVFilterPicRef.
  22. 2010-05-01 - r23002 - lavf 52.62.0 - probe function
  23. Add av_probe_input_format2 to API, it allows ignoring probe
  24. results below given score and returns the actual probe score.
  25. 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
  26. Add a flag for av_metadata_set2() to disable overwriting of
  27. existing tags.
  28. 2010-04-01 - r22753 - lavc 52.66.0
  29. Add avcodec_get_edge_width()
  30. 2010-03-31 - r22750 - lavc 52.65.0
  31. Add avcodec_copy_context().
  32. 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
  33. Make av_match_ext() public.
  34. 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
  35. Move AVMediaType enum from libavcodec to libavutil.
  36. 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
  37. Define AVMediaType enum, and use it instead of enum CodecType, which
  38. is deprecated and will be dropped at the next major bump.
  39. 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
  40. Implement av_strerror().
  41. 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
  42. Support DCT-I and DST-I
  43. 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
  44. Add AVFormatContext.start_time_realtime field.
  45. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
  46. Add AVFilterPicRef.pos field.
  47. 2010-03-13 - r22501 - lavu 50.12.0 - error.h
  48. Move error code definitions from libavcodec/avcodec.h to
  49. the new public header libavutil/error.h.
  50. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
  51. Add public FFT interface.
  52. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
  53. Add av_stristr().
  54. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
  55. Add av_tree_enumerate().
  56. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
  57. Add av_compare_ts().
  58. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
  59. Add sws_getCoefficients().
  60. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
  61. Add a list of generic tag names, change 'author' -> 'artist',
  62. 'year' -> 'date'.
  63. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
  64. Add av_get_pix_fmt().
  65. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale
  66. Change constness attributes of sws_scale() parameters.
  67. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
  68. Add a log_ctx parameter to avfilter_graph_config_links().
  69. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
  70. Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
  71. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
  72. Change the avfilter_add_colorspace() signature, make it accept an
  73. (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
  74. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
  75. Add avfilter_add_colorspace().
  76. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
  77. Add av_match_ext(), it should be used in place of match_ext().
  78. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
  79. Add av_guess_format(), it should be used in place of guess_format().
  80. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
  81. Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
  82. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
  83. Add av_d2str().
  84. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
  85. Add avg_frame_rate.
  86. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
  87. Introduce the av_bmg_next() function.
  88. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
  89. Add a slice_dir parameter to avfilter_draw_slice().
  90. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
  91. Remove the next field from AVFilter, this is not anymore required.
  92. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
  93. Introduce the avfilter_next() function.
  94. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
  95. Change the signature of avfilter_register() to make it return an
  96. int. This is required since now the registration operation may fail.
  97. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
  98. Make the pixdesc.h API public.
  99. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
  100. Add a next field to AVFilter, this is used for simplifying the
  101. registration and management of the registered filters.
  102. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
  103. Add a description field to AVFilter.
  104. 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
  105. Change the interface of avfilter_make_format_list() from
  106. avfilter_make_format_list(int n, ...) to
  107. avfilter_make_format_list(enum PixelFormat *pix_fmts).
  108. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
  109. Make avfilter_get_video_buffer() recursive and add the w and h
  110. parameters to it.
  111. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
  112. Add w and h fields to AVFilterPic.
  113. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
  114. This is now an unsigned int instead of a signed int.
  115. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
  116. Add a pts field to AVSubtitle which gives the subtitle packet pts
  117. in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
  118. not work right without this.
  119. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
  120. PKT_FLAG_KEY has been deprecated and will be dropped at the next
  121. major version. Use AV_PKT_FLAG_KEY instead.
  122. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
  123. av_lockmgr_register() can be used to register a callback function
  124. that lavc (and in the future, libraries that depend on lavc) can use
  125. to implement mutexes. The application should provide a callback function
  126. that implements the AV_LOCK_* operations described in avcodec.h.
  127. When the lock manager is registered, FFmpeg is guaranteed to behave
  128. correctly in a multi-threaded application.
  129. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
  130. av_free_packet() is no longer an inline function. It is now exported.
  131. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
  132. Please use NULL instead. This has been supported since r16506
  133. (lavf > 52.23.1, lavc > 52.10.0).
  134. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
  135. The old decoding functions are deprecated, all new code should use the
  136. new functions avcodec_decode_video2(), avcodec_decode_audio3() and
  137. avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
  138. argument instead of a const uint8_t *buf / int buf_size pair.
  139. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
  140. Introduce the av_fifo_space() function.
  141. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
  142. Move AVPacket declaration from libavformat/avformat.h to
  143. libavcodec/avcodec.h.
  144. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
  145. Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
  146. PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
  147. Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
  148. PIX_FMT_BGR32_1 are now macros.
  149. avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
  150. Re-sort the enum PixelFormat list accordingly.
  151. This change breaks API/ABI backward compatibility.
  152. 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
  153. Add the enum PixelFormat values:
  154. PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
  155. PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
  156. 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
  157. The Mersenne Twister PRNG implemented through the av_random* functions
  158. was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
  159. instead.
  160. 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
  161. av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
  162. and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
  163. and av_fifo_realloc2.
  164. In addition, the order of the function arguments of av_fifo_generic_read
  165. was changed to match av_fifo_generic_write.
  166. The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
  167. applications, they may not use sizeof() or directly access members.
  168. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
  169. Introduce a new metadata API (see av_metadata_get() and friends).
  170. The old API is now deprecated and should not be used anymore. This especially
  171. includes the following structure fields:
  172. - AVFormatContext.title
  173. - AVFormatContext.author
  174. - AVFormatContext.copyright
  175. - AVFormatContext.comment
  176. - AVFormatContext.album
  177. - AVFormatContext.year
  178. - AVFormatContext.track
  179. - AVFormatContext.genre
  180. - AVStream.language
  181. - AVStream.filename
  182. - AVProgram.provider_name
  183. - AVProgram.name
  184. - AVChapter.title