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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 - r25174 - lavu 50.28.0 - av_log_set_flags()

  17.   Default of av_log() changed due to many problems to the old no repeat

  18.   detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before

  19.   enabling it for your app!.

  20. 

  21. 2010-09-24 - r25167 - lavc 52.90.0 - av_opt_show2()

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

  23. 

  24. 2010-09-14 - r25120 - lavu 50.27.0 - av_popcount()

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

  26. 

  27. 2010-09-08 - r25076 - lavu 50.26.0 - av_get_cpu_flags()

  28.   Add av_get_cpu_flags().

  29. 

  30. 2010-09-07 - r25067 - lavcore 0.9.0 - av_image_copy()

  31.   Add av_image_copy().

  32. 

  33. 2010-09-07 - r25064 - lavcore 0.8.0 - av_image_copy_plane()

  34.   Add av_image_copy_plane().

  35. 

  36. 2010-09-07 - r25057 - lavcore 0.7.0 - imgutils.h

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

  38.   deprecate the old names.

  39. 

  40. 2010-09-04 - r25040 - lavu 50.25.0 - AV_CPU_FLAG_*

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

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

  43. 

  44. 2010-08-26 - r24936 - lavc 52.87.0 - avcodec_get_channel_layout()

  45.   Add avcodec_get_channel_layout() in audioconvert.h.

  46. 

  47. 2010-08-20 - r24851 - lavcore 0.6.0 - av_fill_image_max_pixsteps()

  48.   Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().

  49. 

  50. 2010-08-18 - r24827 - lavcore 0.5.0 - av_fill_image_max_pixstep()

  51.   Add av_fill_image_max_pixstep() in imgutils.h.

  52. 

  53. 2010-08-17 - r24814 - lavu 50.24.0 - AV_NE()

  54.   Add the AV_NE macro.

  55. 

  56. 2010-08-17 - r24811 - lavfi 1.36.0 - audio framework

  57.   Implement AVFilterBufferRefAudioProps struct for audio properties,

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

  59. 

  60. 2010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()

  61.   Add av_get_image_linesize() in imgutils.h.

  62. 

  63. 2010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef

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

  65. 

  66.   This change breaks libavfilter API/ABI.

  67. 

  68. 2010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()

  69.   Add av_picture_data_copy in avcodec.h.

  70. 

  71. 2010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()

  72.   Change avfilter_open() signature:

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

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

  75. 

  76.   This change breaks libavfilter API/ABI.

  77. 

  78. 2010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef

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

  80.   properties to AVFilterBufferRefVideoProps.

  81. 

  82.   This change breaks libavfilter API/ABI.

  83. 

  84. 2010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink

  85.   Rename AVFilterLink fields:

  86.   AVFilterLink.srcpic    ->  AVFilterLink.src_buf

  87.   AVFilterLink.cur_pic   ->  AVFilterLink.cur_buf

  88.   AVFilterLink.outpic    ->  AVFilterLink.out_buf

  89. 

  90. 2010-08-07 - r24731 - lavfi 1.30.0

  91.   Rename functions and fields:

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

  93.   avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props

  94.   AVFilterBufferRef.pic      -> AVFilterBufferRef.buffer

  95. 

  96. 2010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef

  97.   Rename AVFilterPicRef to AVFilterBufferRef.

  98. 

  99. 2010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer

  100.   Move format field from AVFilterBuffer to AVFilterPicRef.

  101. 

  102. 2010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()

  103.   Deprecate avcodec_check_dimensions() in favor of the function

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

  105. 

  106. 2010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer

  107.   Increase size of the arrays AVFilterBuffer.data and

  108.   AVFilterBuffer.linesize from 4 to 8.

  109. 

  110.   This change breaks libavfilter ABI.

  111. 

  112. 2010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h

  113.   Add functions av_fill_image_linesizes() and

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

  115. 

  116. 2010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h

  117.   Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()

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

  119.   av_parse_video_size() and av_parse_video_rate() declared in

  120.   libavcore/parseutils.h.

  121. 

  122. 2010-07-23 - r24439 - lavu 50.23.0 - mathematics.h

  123.   Add the M_PHI constant definition.

  124. 

  125. 2010-07-22 - r24424 - lavfi 1.26.0 - media format generalization

  126.   Add a type field to AVFilterLink.

  127. 

  128.   Change the field types:

  129.   enum PixelFormat format   -> int format   in AVFilterBuffer

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

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

  132. 

  133.   Change the function signatures:

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

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

  136. 

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

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

  139. 

  140.   AVFilterFormats *avfilter_all_colorspaces(void); ->

  141.   AVFilterFormats *avfilter_all_formats    (enum AVMediaType type);

  142. 

  143.   This change breaks libavfilter API/ABI.

  144. 

  145. 2010-07-21 - r24393 - lavcore 0.0.0

  146.   Add libavcore.

  147. 

  148. 2010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer

  149.   Remove w and h fields from AVFilterBuffer.

  150. 

  151. 2010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer

  152.   Rename AVFilterPic to AVFilterBuffer.

  153. 

  154. 2010-07-17 - r24278 - lavf 52.74.0 - url_fskip()

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

  156. 

  157. 2010-07-11 - r24199 - lavc 52.83.0

  158.   Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.

  159.   Add AVLPCType enum.

  160.   Deprecate AVCodecContext.use_lpc.

  161. 

  162. 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()

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

  164.   avcodec_decode_subtitle.

  165. 

  166. 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h

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

  168. 

  169. 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h

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

  171. 

  172. 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()

  173.   Add avfilter_copy_picref_props().

  174. 

  175. 2010-07-03 - r24021 - lavc 52.79.0

  176.   Add FF_COMPLIANCE_UNOFFICIAL and change all instances of

  177.   FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.

  178. 

  179. 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h

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

  181.   lfg.h.

  182. 

  183. 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()

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

  185.   set the alpha value to 255 by default.

  186. 

  187. 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class

  188.   Add priv_data_size and priv_data_class to URLProtocol.

  189. 

  190. 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()

  191.   Add url_alloc() and url_connect().

  192. 

  193. 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()

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

  195. 

  196. 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()

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

  198. 

  199. 2010-06-05 - r23485 - lavu 50.18.0 - eval API

  200.   Make the eval API public.

  201. 

  202. 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE

  203.   Add AV_BASE64_SIZE() macro.

  204. 

  205. 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()

  206.   Add av_get_codec_tag_string().

  207. 

  208. 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API

  209.   Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().

  210. 

  211. 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL

  212.   Add CODEC_CAP_EXPERIMENTAL flag.

  213. 

  214. 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()

  215.   Add av_get_random_seed().

  216. 

  217. 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT

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

  219. 

  220. 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef

  221.   Add interlaced and top_field_first fields to AVFilterPicRef.

  222. 

  223. 2010-05-01 - r23002 - lavf 52.62.0 - probe function

  224.   Add av_probe_input_format2 to API, it allows ignoring probe

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

  226. 

  227. 2010-04-01 - r22806 - lavf 52.61.0 - metadata API

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

  229.   existing tags.

  230. 

  231. 2010-04-01 - r22753 - lavc 52.66.0

  232.   Add avcodec_get_edge_width().

  233. 

  234. 2010-03-31 - r22750 - lavc 52.65.0

  235.   Add avcodec_copy_context().

  236. 

  237. 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()

  238.   Make av_match_ext() public.

  239. 

  240. 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType

  241.   Move AVMediaType enum from libavcodec to libavutil.

  242. 

  243. 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType

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

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

  246. 

  247. 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()

  248.   Implement av_strerror().

  249. 

  250. 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()

  251.   Support DCT-I and DST-I.

  252. 

  253. 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime

  254.   Add AVFormatContext.start_time_realtime field.

  255. 

  256. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos

  257.   Add AVFilterPicRef.pos field.

  258. 

  259. 2010-03-13 - r22501 - lavu 50.12.0 - error.h

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

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

  262. 

  263. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h

  264.   Add public FFT interface.

  265. 

  266. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()

  267.   Add av_stristr().

  268. 

  269. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()

  270.   Add av_tree_enumerate().

  271. 

  272. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()

  273.   Add av_compare_ts().

  274. 

  275. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()

  276.   Add sws_getCoefficients().

  277. 

  278. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API

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

  280.   'year' -> 'date'.

  281. 

  282. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()

  283.   Add av_get_pix_fmt().

  284. 

  285. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()

  286.   Change constness attributes of sws_scale() parameters.

  287. 

  288. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()

  289.   Add a log_ctx parameter to avfilter_graph_config_links().

  290. 

  291. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()

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

  293. 

  294. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()

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

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

  297. 

  298. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()

  299.   Add avfilter_add_colorspace().

  300. 

  301. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()

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

  303. 

  304. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()

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

  306. 

  307. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API

  308.   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and

  309.   AV_METADATA_DONT_STRDUP_VAL.

  310. 

  311. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API

  312.   Add av_d2str().

  313. 

  314. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream

  315.   Add avg_frame_rate.

  316. 

  317. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()

  318.   Introduce the av_bmg_next() function.

  319. 

  320. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()

  321.   Add a slice_dir parameter to avfilter_draw_slice().

  322. 

  323. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter

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

  325. 

  326. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()

  327.   Introduce the avfilter_next() function.

  328. 

  329. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()

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

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

  332. 

  333. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API

  334.   Make the pixdesc.h API public.

  335. 

  336. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next

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

  338.   registration and management of the registered filters.

  339. 

  340. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description

  341.   Add a description field to AVFilter.

  342. 

  343. 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()

  344.   Change the interface of avfilter_make_format_list() from

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

  346.   avfilter_make_format_list(enum PixelFormat *pix_fmts).

  347. 

  348. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()

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

  350.   parameters to it.

  351. 

  352. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic

  353.   Add w and h fields to AVFilterPic.

  354. 

  355. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size

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

  357. 

  358. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts

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

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

  361.   not work right without this.

  362. 

  363. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY

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

  365.   major version. Use AV_PKT_FLAG_KEY instead.

  366. 

  367. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()

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

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

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

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

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

  373.   correctly in a multi-threaded application.

  374. 

  375. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()

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

  377. 

  378. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()

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

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

  381. 

  382. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle

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

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

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

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

  387. 

  388. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()

  389.   Introduce the av_fifo_space() function.

  390. 

  391. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket

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

  393.   libavcodec/avcodec.h.

  394. 

  395. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats

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

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

  398.   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and

  399.   PIX_FMT_BGR32_1 are now macros.

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

  401.   Re-sort the enum PixelFormat list accordingly.

  402.   This change breaks API/ABI backward compatibility.

  403. 

  404. 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants

  405.   Add the enum PixelFormat values:

  406.   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,

  407.   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.

  408. 

  409. 2009-03-21 - r18116 - lavu 50.0.0  - av_random*

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

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

  412.   instead.

  413. 

  414. 2009-03-08 - r17869 - lavu 50.0.0  - AVFifoBuffer

  415.   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped

  416.   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write

  417.   and av_fifo_realloc2.

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

  419.   was changed to match av_fifo_generic_write.

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

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

  422. 

  423. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API

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

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

  426.   includes the following structure fields:

  427.     - AVFormatContext.title

  428.     - AVFormatContext.author

  429.     - AVFormatContext.copyright

  430.     - AVFormatContext.comment

  431.     - AVFormatContext.album

  432.     - AVFormatContext.year

  433.     - AVFormatContext.track

  434.     - AVFormatContext.genre

  435.     - AVStream.language

  436.     - AVStream.filename

  437.     - AVProgram.provider_name

  438.     - AVProgram.name

  439.     - AVChapter.title