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

  16.   Add interlaced and top_field_first fields to AVFilterPicRef.

  17. 

  18. 2010-05-01 - r23002 - lavf 52.62.0 - probe function

  19.   Add av_probe_input_format2 to API, it allows ignoring probe

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

  21. 

  22. 2010-04-01 - r22806 - lavf 52.61.0 - metadata API

  23.   Add a flag for av_metadata_set2() to disable overwriting of

  24.   existing tags.

  25. 

  26. 2010-04-01 - r22753 - lavc 52.66.0

  27.   Add avcodec_get_edge_width()

  28. 

  29. 2010-03-31 - r22750 - lavc 52.65.0

  30.   Add avcodec_copy_context().

  31. 

  32. 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()

  33.   Make av_match_ext() public.

  34. 

  35. 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType

  36.   Move AVMediaType enum from libavcodec to libavutil.

  37. 

  38. 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType

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

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

  41. 

  42. 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()

  43.   Implement av_strerror().

  44. 

  45. 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()

  46.   Support DCT-I and DST-I

  47. 

  48. 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime

  49.   Add AVFormatContext.start_time_realtime field.

  50. 

  51. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos

  52.   Add AVFilterPicRef.pos field.

  53. 

  54. 2010-03-13 - r22501 - lavu 50.12.0 - error.h

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

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

  57. 

  58. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h

  59.   Add public FFT interface.

  60. 

  61. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()

  62.   Add av_stristr().

  63. 

  64. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()

  65.   Add av_tree_enumerate().

  66. 

  67. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()

  68.   Add av_compare_ts().

  69. 

  70. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()

  71.   Add sws_getCoefficients().

  72. 

  73. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API

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

  75.   'year' -> 'date'.

  76. 

  77. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()

  78.   Add av_get_pix_fmt().

  79. 

  80. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale

  81.   Change constness attributes of sws_scale() parameters.

  82. 

  83. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()

  84.   Add a log_ctx parameter to avfilter_graph_config_links().

  85. 

  86. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put

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

  88. 

  89. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()

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

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

  92. 

  93. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()

  94.   Add avfilter_add_colorspace().

  95. 

  96. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()

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

  98. 

  99. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()

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

  101. 

  102. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API

  103.   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.

  104. 

  105. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API

  106.   Add av_d2str().

  107. 

  108. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream

  109.   Add avg_frame_rate.

  110. 

  111. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()

  112.   Introduce the av_bmg_next() function.

  113. 

  114. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()

  115.   Add a slice_dir parameter to avfilter_draw_slice().

  116. 

  117. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter

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

  119. 

  120. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()

  121.   Introduce the avfilter_next() function.

  122. 

  123. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()

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

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

  126. 

  127. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API

  128.   Make the pixdesc.h API public.

  129. 

  130. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next

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

  132.   registration and management of the registered filters.

  133. 

  134. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description

  135.   Add a description field to AVFilter.

  136. 

  137. 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()

  138.   Change the interface of avfilter_make_format_list() from

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

  140.   avfilter_make_format_list(enum PixelFormat *pix_fmts).

  141. 

  142. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()

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

  144.   parameters to it.

  145. 

  146. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic

  147.   Add w and h fields to AVFilterPic.

  148. 

  149. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size

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

  151. 

  152. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts

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

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

  155.   not work right without this.

  156. 

  157. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY

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

  159.   major version. Use AV_PKT_FLAG_KEY instead.

  160. 

  161. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()

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

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

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

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

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

  167.   correctly in a multi-threaded application.

  168. 

  169. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet

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

  171. 

  172. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree

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

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

  175. 

  176. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle

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

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

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

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

  181. 

  182. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space

  183.   Introduce the av_fifo_space() function.

  184. 

  185. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket

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

  187.   libavcodec/avcodec.h.

  188. 

  189. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats

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

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

  192.   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and

  193.   PIX_FMT_BGR32_1 are now macros.

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

  195.   Re-sort the enum PixelFormat list accordingly.

  196.   This change breaks API/ABI backward compatibility.

  197. 

  198. 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants

  199.   Add the enum PixelFormat values:

  200.   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,

  201.   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.

  202. 

  203. 2009-03-21 - r18116 - lavu 50.0.0  - av_random*

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

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

  206.   instead.

  207. 

  208. 2009-03-08 - r17869 - lavu 50.0.0  - AVFifoBuffer

  209.   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped

  210.   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write

  211.   and av_fifo_realloc2.

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

  213.   was changed to match av_fifo_generic_write.

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

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

  216. 

  217. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API

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

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

  220.   includes the following structure fields:

  221.     - AVFormatContext.title

  222.     - AVFormatContext.author

  223.     - AVFormatContext.copyright

  224.     - AVFormatContext.comment

  225.     - AVFormatContext.album

  226.     - AVFormatContext.year

  227.     - AVFormatContext.track

  228.     - AVFormatContext.genre

  229.     - AVStream.language

  230.     - AVStream.filename

  231.     - AVProgram.provider_name

  232.     - AVProgram.name

  233.     - AVChapter.title