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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. 2010-07-11 - r24199 - lavc 52.83.0

  16.   Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.

  17.   Add AVLPCType enum.

  18.   Deprecate AVCodecContext.use_lpc.

  19. 

  20. 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()

  21.   Add a function for free the contents of a AVSubtitle generated by

  22.   avcodec_decode_subtitle.

  23. 

  24. 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h

  25.   Make the bswap.h and intreadwrite.h API public.

  26. 

  27. 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h

  28.   Rename read/write_line() to av_read/write_image_line().

  29. 

  30. 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()

  31.   Add avfilter_copy_picref_props().

  32. 

  33. 2010-07-03 - r24021 - lavc 52.79.0

  34.   Add FF_COMPLIANCE_UNOFFICIAL and change all instances of

  35.   FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.

  36. 

  37. 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h

  38.   Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through

  39.   lfg.h.

  40. 

  41. 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()

  42.   Extend av_parse_color() syntax, make it accept an alpha value specifier and

  43.   set the alpha value to 255 by default.

  44. 

  45. 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class

  46.   Add priv_data_size and priv_data_class to URLProtocol.

  47. 

  48. 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()

  49.   Add url_alloc() and url_connect().

  50. 

  51. 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()

  52.   Add av_register_protocol2(), deprecating av_register_protocol().

  53. 

  54. 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()

  55.   Add av_compare_mod() to libavutil/mathematics.h.

  56. 

  57. 2010-06-05 - r23485 - lavu 50.18.0 - eval API

  58.   Make the eval API public.

  59. 

  60. 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE

  61.   Add AV_BASE64_SIZE() macro.

  62. 

  63. 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()

  64.   Add av_get_codec_tag_string().

  65. 

  66. 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API

  67.   Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().

  68. 

  69. 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL

  70.   Add CODEC_CAP_EXPERIMENTAL flag.

  71. 

  72. 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()

  73.   Add av_get_random_seed().

  74. 

  75. 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT

  76.   Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.

  77. 

  78. 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef

  79.   Add interlaced and top_field_first fields to AVFilterPicRef.

  80. 

  81. 2010-05-01 - r23002 - lavf 52.62.0 - probe function

  82.   Add av_probe_input_format2 to API, it allows ignoring probe

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

  84. 

  85. 2010-04-01 - r22806 - lavf 52.61.0 - metadata API

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

  87.   existing tags.

  88. 

  89. 2010-04-01 - r22753 - lavc 52.66.0

  90.   Add avcodec_get_edge_width().

  91. 

  92. 2010-03-31 - r22750 - lavc 52.65.0

  93.   Add avcodec_copy_context().

  94. 

  95. 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()

  96.   Make av_match_ext() public.

  97. 

  98. 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType

  99.   Move AVMediaType enum from libavcodec to libavutil.

  100. 

  101. 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType

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

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

  104. 

  105. 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()

  106.   Implement av_strerror().

  107. 

  108. 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()

  109.   Support DCT-I and DST-I.

  110. 

  111. 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime

  112.   Add AVFormatContext.start_time_realtime field.

  113. 

  114. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos

  115.   Add AVFilterPicRef.pos field.

  116. 

  117. 2010-03-13 - r22501 - lavu 50.12.0 - error.h

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

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

  120. 

  121. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h

  122.   Add public FFT interface.

  123. 

  124. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()

  125.   Add av_stristr().

  126. 

  127. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()

  128.   Add av_tree_enumerate().

  129. 

  130. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()

  131.   Add av_compare_ts().

  132. 

  133. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()

  134.   Add sws_getCoefficients().

  135. 

  136. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API

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

  138.   'year' -> 'date'.

  139. 

  140. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()

  141.   Add av_get_pix_fmt().

  142. 

  143. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()

  144.   Change constness attributes of sws_scale() parameters.

  145. 

  146. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()

  147.   Add a log_ctx parameter to avfilter_graph_config_links().

  148. 

  149. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()

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

  151. 

  152. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()

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

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

  155. 

  156. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()

  157.   Add avfilter_add_colorspace().

  158. 

  159. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()

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

  161. 

  162. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()

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

  164. 

  165. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API

  166.   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and

  167.   AV_METADATA_DONT_STRDUP_VAL.

  168. 

  169. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API

  170.   Add av_d2str().

  171. 

  172. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream

  173.   Add avg_frame_rate.

  174. 

  175. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()

  176.   Introduce the av_bmg_next() function.

  177. 

  178. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()

  179.   Add a slice_dir parameter to avfilter_draw_slice().

  180. 

  181. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter

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

  183. 

  184. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()

  185.   Introduce the avfilter_next() function.

  186. 

  187. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()

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

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

  190. 

  191. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API

  192.   Make the pixdesc.h API public.

  193. 

  194. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next

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

  196.   registration and management of the registered filters.

  197. 

  198. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description

  199.   Add a description field to AVFilter.

  200. 

  201. 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()

  202.   Change the interface of avfilter_make_format_list() from

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

  204.   avfilter_make_format_list(enum PixelFormat *pix_fmts).

  205. 

  206. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()

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

  208.   parameters to it.

  209. 

  210. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic

  211.   Add w and h fields to AVFilterPic.

  212. 

  213. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size

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

  215. 

  216. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts

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

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

  219.   not work right without this.

  220. 

  221. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY

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

  223.   major version. Use AV_PKT_FLAG_KEY instead.

  224. 

  225. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()

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

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

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

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

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

  231.   correctly in a multi-threaded application.

  232. 

  233. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()

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

  235. 

  236. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()

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

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

  239. 

  240. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle

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

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

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

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

  245. 

  246. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()

  247.   Introduce the av_fifo_space() function.

  248. 

  249. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket

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

  251.   libavcodec/avcodec.h.

  252. 

  253. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats

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

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

  256.   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and

  257.   PIX_FMT_BGR32_1 are now macros.

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

  259.   Re-sort the enum PixelFormat list accordingly.

  260.   This change breaks API/ABI backward compatibility.

  261. 

  262. 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants

  263.   Add the enum PixelFormat values:

  264.   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,

  265.   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.

  266. 

  267. 2009-03-21 - r18116 - lavu 50.0.0  - av_random*

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

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

  270.   instead.

  271. 

  272. 2009-03-08 - r17869 - lavu 50.0.0  - AVFifoBuffer

  273.   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped

  274.   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write

  275.   and av_fifo_realloc2.

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

  277.   was changed to match av_fifo_generic_write.

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

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

  280. 

  281. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API

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

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

  284.   includes the following structure fields:

  285.     - AVFormatContext.title

  286.     - AVFormatContext.author

  287.     - AVFormatContext.copyright

  288.     - AVFormatContext.comment

  289.     - AVFormatContext.album

  290.     - AVFormatContext.year

  291.     - AVFormatContext.track

  292.     - AVFormatContext.genre

  293.     - AVStream.language

  294.     - AVStream.filename

  295.     - AVProgram.provider_name

  296.     - AVProgram.name

  297.     - AVChapter.title