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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. libavcore:   2010-07-21

  6. libavdevice: ?

  7. libavfilter: 2009-10-18

  8. libavformat: ?

  9. libpostproc: ?

  10. libswscale:  ?

  11. libavutil:   2009-03-08

  12. 

  13. 

  14. API changes, most recent first:

  15. 

  16. 2010-09-24 - r25167 - lavc 52.90.0 - av_opt_show2()

  17.   Deprecate av_opt_show() in favor or av_opt_show2().

  18. 

  19. 2010-09-14 - r25120 - lavu 50.27.0 - av_popcount()

  20.   Add av_popcount() to libavutil/common.h.

  21. 

  22. 2010-09-08 - r25076 - lavu 50.26.0 - av_get_cpu_flags()

  23.   Add av_get_cpu_flags().

  24. 

  25. 2010-09-07 - r25067 - lavcore 0.9.0 - av_image_copy()

  26.   Add av_image_copy().

  27. 

  28. 2010-09-07 - r25064 - lavcore 0.8.0 - av_image_copy_plane()

  29.   Add av_image_copy_plane().

  30. 

  31. 2010-09-07 - r25057 - lavcore 0.7.0 - imgutils.h

  32.   Adopt hierarchical scheme for the imgutils.h function names,

  33.   deprecate the old names.

  34. 

  35. 2010-09-04 - r25040 - lavu 50.25.0 - AV_CPU_FLAG_*

  36.   Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor

  37.   of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.

  38. 

  39. 2010-08-26 - r24936 - lavc 52.87.0 - avcodec_get_channel_layout()

  40.   Add avcodec_get_channel_layout() in audioconvert.h.

  41. 

  42. 2010-08-20 - r24851 - lavcore 0.6.0 - av_fill_image_max_pixsteps()

  43.   Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().

  44. 

  45. 2010-08-18 - r24827 - lavcore 0.5.0 - av_fill_image_max_pixstep()

  46.   Add av_fill_image_max_pixstep() in imgutils.h.

  47. 

  48. 2010-08-17 - r24814 - lavu 50.24.0 - AV_NE()

  49.   Add the AV_NE macro.

  50. 

  51. 2010-08-17 - r24811 - lavfi 1.36.0 - audio framework

  52.   Implement AVFilterBufferRefAudioProps struct for audio properties,

  53.   get_audio_buffer(), filter_samples() functions and related changes.

  54. 

  55. 2010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()

  56.   Add av_get_image_linesize() in imgutils.h.

  57. 

  58. 2010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef

  59.   Resize data and linesize arrays in AVFilterBufferRef to 8.

  60. 

  61.   This change breaks libavfilter API/ABI.

  62. 

  63. 2010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()

  64.   Add av_picture_data_copy in avcodec.h.

  65. 

  66. 2010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()

  67.   Change avfilter_open() signature:

  68.   AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->

  69.   int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);

  70. 

  71.   This change breaks libavfilter API/ABI.

  72. 

  73. 2010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef

  74.   Add a type field to AVFilterBufferRef, and move video specific

  75.   properties to AVFilterBufferRefVideoProps.

  76. 

  77.   This change breaks libavfilter API/ABI.

  78. 

  79. 2010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink

  80.   Rename AVFilterLink fields:

  81.   AVFilterLink.srcpic    ->  AVFilterLink.src_buf

  82.   AVFilterLink.cur_pic   ->  AVFilterLink.cur_buf

  83.   AVFilterLink.outpic    ->  AVFilterLink.out_buf

  84. 

  85. 2010-08-07 - r24731 - lavfi 1.30.0

  86.   Rename functions and fields:

  87.   avfilter_(un)ref_pic       -> avfilter_(un)ref_buffer

  88.   avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props

  89.   AVFilterBufferRef.pic      -> AVFilterBufferRef.buffer

  90. 

  91. 2010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef

  92.   Rename AVFilterPicRef to AVFilterBufferRef.

  93. 

  94. 2010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer

  95.   Move format field from AVFilterBuffer to AVFilterPicRef.

  96. 

  97. 2010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()

  98.   Deprecate avcodec_check_dimensions() in favor of the function

  99.   av_check_image_size() defined in libavcore/imgutils.h.

  100. 

  101. 2010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer

  102.   Increase size of the arrays AVFilterBuffer.data and

  103.   AVFilterBuffer.linesize from 4 to 8.

  104. 

  105.   This change breaks libavfilter ABI.

  106. 

  107. 2010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h

  108.   Add functions av_fill_image_linesizes() and

  109.   av_fill_image_pointers(), declared in libavcore/imgutils.h.

  110. 

  111. 2010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h

  112.   Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()

  113.   defined in libavcodec in favor of the newly added functions

  114.   av_parse_video_size() and av_parse_video_rate() declared in

  115.   libavcore/parseutils.h.

  116. 

  117. 2010-07-23 - r24439 - lavu 50.23.0 - mathematics.h

  118.   Add the M_PHI constant definition.

  119. 

  120. 2010-07-22 - r24424 - lavfi 1.26.0 - media format generalization

  121.   Add a type field to AVFilterLink.

  122. 

  123.   Change the field types:

  124.   enum PixelFormat format   -> int format   in AVFilterBuffer

  125.   enum PixelFormat *formats -> int *formats in AVFilterFormats

  126.   enum PixelFormat *format  -> int format   in AVFilterLink

  127. 

  128.   Change the function signatures:

  129.   AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->

  130.   AVFilterFormats *avfilter_make_format_list(const int *fmts);

  131. 

  132.   int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->

  133.   int avfilter_add_format    (AVFilterFormats **avff, int fmt);

  134. 

  135.   AVFilterFormats *avfilter_all_colorspaces(void); ->

  136.   AVFilterFormats *avfilter_all_formats    (enum AVMediaType type);

  137. 

  138.   This change breaks libavfilter API/ABI.

  139. 

  140. 2010-07-21 - r24393 - lavcore 0.0.0

  141.   Add libavcore.

  142. 

  143. 2010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer

  144.   Remove w and h fields from AVFilterBuffer.

  145. 

  146. 2010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer

  147.   Rename AVFilterPic to AVFilterBuffer.

  148. 

  149. 2010-07-17 - r24278 - lavf 52.74.0 - url_fskip()

  150.   Make url_fskip() return an int error code instead of void.

  151. 

  152. 2010-07-11 - r24199 - lavc 52.83.0

  153.   Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.

  154.   Add AVLPCType enum.

  155.   Deprecate AVCodecContext.use_lpc.

  156. 

  157. 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()

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

  159.   avcodec_decode_subtitle.

  160. 

  161. 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h

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

  163. 

  164. 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h

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

  166. 

  167. 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()

  168.   Add avfilter_copy_picref_props().

  169. 

  170. 2010-07-03 - r24021 - lavc 52.79.0

  171.   Add FF_COMPLIANCE_UNOFFICIAL and change all instances of

  172.   FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.

  173. 

  174. 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h

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

  176.   lfg.h.

  177. 

  178. 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()

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

  180.   set the alpha value to 255 by default.

  181. 

  182. 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class

  183.   Add priv_data_size and priv_data_class to URLProtocol.

  184. 

  185. 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()

  186.   Add url_alloc() and url_connect().

  187. 

  188. 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()

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

  190. 

  191. 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()

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

  193. 

  194. 2010-06-05 - r23485 - lavu 50.18.0 - eval API

  195.   Make the eval API public.

  196. 

  197. 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE

  198.   Add AV_BASE64_SIZE() macro.

  199. 

  200. 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()

  201.   Add av_get_codec_tag_string().

  202. 

  203. 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API

  204.   Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().

  205. 

  206. 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL

  207.   Add CODEC_CAP_EXPERIMENTAL flag.

  208. 

  209. 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()

  210.   Add av_get_random_seed().

  211. 

  212. 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT

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

  214. 

  215. 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef

  216.   Add interlaced and top_field_first fields to AVFilterPicRef.

  217. 

  218. 2010-05-01 - r23002 - lavf 52.62.0 - probe function

  219.   Add av_probe_input_format2 to API, it allows ignoring probe

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

  221. 

  222. 2010-04-01 - r22806 - lavf 52.61.0 - metadata API

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

  224.   existing tags.

  225. 

  226. 2010-04-01 - r22753 - lavc 52.66.0

  227.   Add avcodec_get_edge_width().

  228. 

  229. 2010-03-31 - r22750 - lavc 52.65.0

  230.   Add avcodec_copy_context().

  231. 

  232. 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()

  233.   Make av_match_ext() public.

  234. 

  235. 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType

  236.   Move AVMediaType enum from libavcodec to libavutil.

  237. 

  238. 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType

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

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

  241. 

  242. 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()

  243.   Implement av_strerror().

  244. 

  245. 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()

  246.   Support DCT-I and DST-I.

  247. 

  248. 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime

  249.   Add AVFormatContext.start_time_realtime field.

  250. 

  251. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos

  252.   Add AVFilterPicRef.pos field.

  253. 

  254. 2010-03-13 - r22501 - lavu 50.12.0 - error.h

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

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

  257. 

  258. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h

  259.   Add public FFT interface.

  260. 

  261. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()

  262.   Add av_stristr().

  263. 

  264. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()

  265.   Add av_tree_enumerate().

  266. 

  267. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()

  268.   Add av_compare_ts().

  269. 

  270. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()

  271.   Add sws_getCoefficients().

  272. 

  273. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API

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

  275.   'year' -> 'date'.

  276. 

  277. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()

  278.   Add av_get_pix_fmt().

  279. 

  280. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()

  281.   Change constness attributes of sws_scale() parameters.

  282. 

  283. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()

  284.   Add a log_ctx parameter to avfilter_graph_config_links().

  285. 

  286. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()

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

  288. 

  289. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()

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

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

  292. 

  293. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()

  294.   Add avfilter_add_colorspace().

  295. 

  296. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()

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

  298. 

  299. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()

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

  301. 

  302. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API

  303.   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and

  304.   AV_METADATA_DONT_STRDUP_VAL.

  305. 

  306. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API

  307.   Add av_d2str().

  308. 

  309. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream

  310.   Add avg_frame_rate.

  311. 

  312. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()

  313.   Introduce the av_bmg_next() function.

  314. 

  315. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()

  316.   Add a slice_dir parameter to avfilter_draw_slice().

  317. 

  318. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter

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

  320. 

  321. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()

  322.   Introduce the avfilter_next() function.

  323. 

  324. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()

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

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

  327. 

  328. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API

  329.   Make the pixdesc.h API public.

  330. 

  331. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next

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

  333.   registration and management of the registered filters.

  334. 

  335. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description

  336.   Add a description field to AVFilter.

  337. 

  338. 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()

  339.   Change the interface of avfilter_make_format_list() from

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

  341.   avfilter_make_format_list(enum PixelFormat *pix_fmts).

  342. 

  343. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()

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

  345.   parameters to it.

  346. 

  347. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic

  348.   Add w and h fields to AVFilterPic.

  349. 

  350. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size

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

  352. 

  353. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts

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

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

  356.   not work right without this.

  357. 

  358. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY

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

  360.   major version. Use AV_PKT_FLAG_KEY instead.

  361. 

  362. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()

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

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

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

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

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

  368.   correctly in a multi-threaded application.

  369. 

  370. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()

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

  372. 

  373. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()

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

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

  376. 

  377. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle

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

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

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

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

  382. 

  383. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()

  384.   Introduce the av_fifo_space() function.

  385. 

  386. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket

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

  388.   libavcodec/avcodec.h.

  389. 

  390. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats

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

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

  393.   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and

  394.   PIX_FMT_BGR32_1 are now macros.

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

  396.   Re-sort the enum PixelFormat list accordingly.

  397.   This change breaks API/ABI backward compatibility.

  398. 

  399. 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants

  400.   Add the enum PixelFormat values:

  401.   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,

  402.   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.

  403. 

  404. 2009-03-21 - r18116 - lavu 50.0.0  - av_random*

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

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

  407.   instead.

  408. 

  409. 2009-03-08 - r17869 - lavu 50.0.0  - AVFifoBuffer

  410.   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped

  411.   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write

  412.   and av_fifo_realloc2.

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

  414.   was changed to match av_fifo_generic_write.

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

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

  417. 

  418. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API

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

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

  421.   includes the following structure fields:

  422.     - AVFormatContext.title

  423.     - AVFormatContext.author

  424.     - AVFormatContext.copyright

  425.     - AVFormatContext.comment

  426.     - AVFormatContext.album

  427.     - AVFormatContext.year

  428.     - AVFormatContext.track

  429.     - AVFormatContext.genre

  430.     - AVStream.language

  431.     - AVStream.filename

  432.     - AVProgram.provider_name

  433.     - AVProgram.name

  434.     - AVChapter.title