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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. 

  12. 

  13. API changes, most recent first:

  14. 

  15. 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT

  16.   Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags

  17. 

  18. 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef

  19.   Add interlaced and top_field_first fields to AVFilterPicRef.

  20. 

  21. 2010-05-01 - r23002 - lavf 52.62.0 - probe function

  22.   Add av_probe_input_format2 to API, it allows ignoring probe

  23.   results below given score and returns the actual probe score.

  24. 

  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. 

  29. 2010-04-01 - r22753 - lavc 52.66.0

  30.   Add avcodec_get_edge_width()

  31. 

  32. 2010-03-31 - r22750 - lavc 52.65.0

  33.   Add avcodec_copy_context().

  34. 

  35. 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()

  36.   Make av_match_ext() public.

  37. 

  38. 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType

  39.   Move AVMediaType enum from libavcodec to libavutil.

  40. 

  41. 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType

  42.   Define AVMediaType enum, and use it instead of enum CodecType, which

  43.   is deprecated and will be dropped at the next major bump.

  44. 

  45. 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()

  46.   Implement av_strerror().

  47. 

  48. 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()

  49.   Support DCT-I and DST-I

  50. 

  51. 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime

  52.   Add AVFormatContext.start_time_realtime field.

  53. 

  54. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos

  55.   Add AVFilterPicRef.pos field.

  56. 

  57. 2010-03-13 - r22501 - lavu 50.12.0 - error.h

  58.   Move error code definitions from libavcodec/avcodec.h to

  59.   the new public header libavutil/error.h.

  60. 

  61. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h

  62.   Add public FFT interface.

  63. 

  64. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()

  65.   Add av_stristr().

  66. 

  67. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()

  68.   Add av_tree_enumerate().

  69. 

  70. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()

  71.   Add av_compare_ts().

  72. 

  73. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()

  74.   Add sws_getCoefficients().

  75. 

  76. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API

  77.   Add a list of generic tag names, change 'author' -> 'artist',

  78.   'year' -> 'date'.

  79. 

  80. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()

  81.   Add av_get_pix_fmt().

  82. 

  83. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale

  84.   Change constness attributes of sws_scale() parameters.

  85. 

  86. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()

  87.   Add a log_ctx parameter to avfilter_graph_config_links().

  88. 

  89. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put

  90.   Add sws_isSupportedInput() and sws_isSupportedOutput() functions.

  91. 

  92. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()

  93.   Change the avfilter_add_colorspace() signature, make it accept an

  94.   (AVFilterFormats **) rather than an (AVFilterFormats *) as before.

  95. 

  96. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()

  97.   Add avfilter_add_colorspace().

  98. 

  99. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()

  100.   Add av_match_ext(), it should be used in place of match_ext().

  101. 

  102. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()

  103.   Add av_guess_format(), it should be used in place of guess_format().

  104. 

  105. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API

  106.   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.

  107. 

  108. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API

  109.   Add av_d2str().

  110. 

  111. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream

  112.   Add avg_frame_rate.

  113. 

  114. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()

  115.   Introduce the av_bmg_next() function.

  116. 

  117. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()

  118.   Add a slice_dir parameter to avfilter_draw_slice().

  119. 

  120. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter

  121.   Remove the next field from AVFilter, this is not anymore required.

  122. 

  123. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()

  124.   Introduce the avfilter_next() function.

  125. 

  126. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()

  127.   Change the signature of avfilter_register() to make it return an

  128.   int. This is required since now the registration operation may fail.

  129. 

  130. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API

  131.   Make the pixdesc.h API public.

  132. 

  133. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next

  134.   Add a next field to AVFilter, this is used for simplifying the

  135.   registration and management of the registered filters.

  136. 

  137. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description

  138.   Add a description field to AVFilter.

  139. 

  140. 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()

  141.   Change the interface of avfilter_make_format_list() from

  142.   avfilter_make_format_list(int n, ...) to

  143.   avfilter_make_format_list(enum PixelFormat *pix_fmts).

  144. 

  145. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()

  146.   Make avfilter_get_video_buffer() recursive and add the w and h

  147.   parameters to it.

  148. 

  149. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic

  150.   Add w and h fields to AVFilterPic.

  151. 

  152. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size

  153.   This is now an unsigned int instead of a signed int.

  154. 

  155. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts

  156.   Add a pts field to AVSubtitle which gives the subtitle packet pts

  157.   in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will

  158.   not work right without this.

  159. 

  160. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY

  161.   PKT_FLAG_KEY has been deprecated and will be dropped at the next

  162.   major version. Use AV_PKT_FLAG_KEY instead.

  163. 

  164. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()

  165.   av_lockmgr_register() can be used to register a callback function

  166.   that lavc (and in the future, libraries that depend on lavc) can use

  167.   to implement mutexes. The application should provide a callback function

  168.   that implements the AV_LOCK_* operations described in avcodec.h.

  169.   When the lock manager is registered, FFmpeg is guaranteed to behave

  170.   correctly in a multi-threaded application.

  171. 

  172. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet

  173.   av_free_packet() is no longer an inline function. It is now exported.

  174. 

  175. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree

  176.   Please use NULL instead. This has been supported since r16506

  177.   (lavf > 52.23.1, lavc > 52.10.0).

  178. 

  179. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle

  180.   The old decoding functions are deprecated, all new code should use the

  181.   new functions avcodec_decode_video2(), avcodec_decode_audio3() and

  182.   avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt

  183.   argument instead of a const uint8_t *buf / int buf_size pair.

  184. 

  185. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space

  186.   Introduce the av_fifo_space() function.

  187. 

  188. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket

  189.   Move AVPacket declaration from libavformat/avformat.h to

  190.   libavcodec/avcodec.h.

  191. 

  192. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats

  193.   Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,

  194.   PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.

  195.   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and

  196.   PIX_FMT_BGR32_1 are now macros.

  197.   avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.

  198.   Re-sort the enum PixelFormat list accordingly.

  199.   This change breaks API/ABI backward compatibility.

  200. 

  201. 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants

  202.   Add the enum PixelFormat values:

  203.   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,

  204.   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.

  205. 

  206. 2009-03-21 - r18116 - lavu 50.0.0  - av_random*

  207.   The Mersenne Twister PRNG implemented through the av_random* functions

  208.   was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions

  209.   instead.

  210. 

  211. 2009-03-08 - r17869 - lavu 50.0.0  - AVFifoBuffer

  212.   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped

  213.   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write

  214.   and av_fifo_realloc2.

  215.   In addition, the order of the function arguments of av_fifo_generic_read

  216.   was changed to match av_fifo_generic_write.

  217.   The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by

  218.   applications, they may not use sizeof() or directly access members.

  219. 

  220. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API

  221.   Introduce a new metadata API (see av_metadata_get() and friends).

  222.   The old API is now deprecated and should not be used anymore. This especially

  223.   includes the following structure fields:

  224.     - AVFormatContext.title

  225.     - AVFormatContext.author

  226.     - AVFormatContext.copyright

  227.     - AVFormatContext.comment

  228.     - AVFormatContext.album

  229.     - AVFormatContext.year

  230.     - AVFormatContext.track

  231.     - AVFormatContext.genre

  232.     - AVStream.language

  233.     - AVStream.filename

  234.     - AVProgram.provider_name

  235.     - AVProgram.name

  236.     - AVChapter.title