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

  16.   Add AVFormatContext.start_time_realtime field.

  17. 

  18. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos

  19.   Add AVFilterPicRef.pos field.

  20. 

  21. 2010-03-13 - r22501 - lavu 50.12.0 - error.h

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

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

  24. 

  25. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h

  26.   Add public FFT interface.

  27. 

  28. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()

  29.   Add av_stristr().

  30. 

  31. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()

  32.   Add av_tree_enumerate().

  33. 

  34. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()

  35.   Add av_compare_ts().

  36. 

  37. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()

  38.   Add sws_getCoefficients().

  39. 

  40. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API

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

  42.   'year' -> 'date'.

  43. 

  44. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()

  45.   Add av_get_pix_fmt().

  46. 

  47. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale

  48.   Change constness attributes of sws_scale() parameters.

  49. 

  50. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()

  51.   Add a log_ctx parameter to avfilter_graph_config_links().

  52. 

  53. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put

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

  55. 

  56. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()

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

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

  59. 

  60. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()

  61.   Add avfilter_add_colorspace().

  62. 

  63. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()

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

  65. 

  66. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()

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

  68. 

  69. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API

  70.   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.

  71. 

  72. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API

  73.   Add av_d2str().

  74. 

  75. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream

  76.   Add avg_frame_rate.

  77. 

  78. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()

  79.   Introduce the av_bmg_next() function.

  80. 

  81. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()

  82.   Add a slice_dir parameter to avfilter_draw_slice().

  83. 

  84. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter

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

  86. 

  87. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()

  88.   Introduce the avfilter_next() function.

  89. 

  90. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()

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

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

  93. 

  94. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API

  95.   Make the pixdesc.h API public.

  96. 

  97. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next

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

  99.   registration and management of the registered filters.

  100. 

  101. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description

  102.   Add a description field to AVFilter.

  103. 

  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. 

  109. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()

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

  111.   parameters to it.

  112. 

  113. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic

  114.   Added w and h fields to AVFilterPic.

  115. 

  116. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size

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

  118. 

  119. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts

  120.   Added a pts field to AVSubtitle which gives the subtitle's packet

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

  122.   not work right without this.

  123. 

  124. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY

  125.   PKT_FLAG_KEY has been deprecated and will be dropped for the next

  126.   major version. Use AV_PKT_FLAG_KEY instead.

  127. 

  128. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()

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

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

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

  132.   the implements the AV_LOCK_* operations described in avcodec.h.

  133.   When the lock manager is registered FFmpeg is guaranteed to behave

  134.   correct also in a multi-threaded application.

  135. 

  136. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet

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

  138. 

  139. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree

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

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

  142. 

  143. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle

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

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

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

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

  148. 

  149. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space

  150.   Introduce the av_fifo_space() function.

  151. 

  152. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket

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

  154.   libavcodec/avcodec.h.

  155. 

  156. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats

  157.   Make the pixel formats: PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,

  158.   PIX_FMT_BGRA, which were defined as macros, defined as enum

  159.   PixelFormat values, and viceversa make PIX_FMT_RGB32,

  160.   PIX_FMT_RGB32_1, PIX_FMT_BGR32, PIX_FMT_BGR32_1 defined as macros.

  161.   Also make avcodec_get_pix_fmt() recognize the "rgb32" and "bgr32"

  162.   aliases.

  163.   Re-sort the enum PixelFormat list accordingly.

  164.   This change breaks API/ABI backward compatibility.

  165. 

  166. 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants

  167.   Add the enum PixelFormat values:

  168.   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,

  169.   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.

  170. 

  171. 2009-03-21 - r18116 - lavu 50.0.0  - av_random*

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

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

  174.   instead.

  175. 

  176. 2009-03-08 - r17869 - lavu 50.0.0  - AVFifoBuffer

  177.   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped

  178.   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write

  179.   and av_fifo_realloc2.

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

  181.   were changed to match av_fifo_generic_write.

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

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

  184. 

  185. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API

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

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

  188.   includes the following structure fields:

  189.     - AVFormatContext.title

  190.     - AVFormatContext.author

  191.     - AVFormatContext.copyright

  192.     - AVFormatContext.comment

  193.     - AVFormatContext.album

  194.     - AVFormatContext.year

  195.     - AVFormatContext.track

  196.     - AVFormatContext.genre

  197.     - AVStream.language

  198.     - AVStream.filename

  199.     - AVProgram.provider_name

  200.     - AVProgram.name

  201.     - AVChapter.title