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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. API changes, most recent first:
  13. 2010-08-17 - r24811 - lavfi 1.36.0 - audio framework
  14. Implement AVFilterBufferRefAudioProps struct for audio properties,
  15. get_audio_buffer(), filter_samples() functions and related changes.
  16. 2010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()
  17. Add av_get_image_linesize() in imgutils.h.
  18. 2010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef
  19. Resize data and linesize arrays in AVFilterBufferRef to 8.
  20. This change breaks libavfilter API/ABI.
  21. 2010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()
  22. Add av_picture_data_copy in avcodec.h.
  23. 2010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()
  24. Change avfilter_open() signature:
  25. AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
  26. int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
  27. This change breaks libavfilter API/ABI.
  28. 2010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef
  29. Add a type field to AVFilterBufferRef, and move video specific
  30. properties to AVFilterBufferRefVideoProps.
  31. This change breaks libavfilter API/ABI.
  32. 2010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink
  33. Rename AVFilterLink fields:
  34. AVFilterLink.srcpic -> AVFilterLink.src_buf
  35. AVFilterLink.cur_pic -> AVFilterLink.cur_buf
  36. AVFilterLink.outpic -> AVFilterLink.out_buf
  37. 2010-08-07 - r24731 - lavfi 1.30.0
  38. Rename functions and fields:
  39. avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
  40. avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
  41. AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
  42. 2010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef
  43. Rename AVFilterPicRef to AVFilterBufferRef.
  44. 2010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer
  45. Move format field from AVFilterBuffer to AVFilterPicRef.
  46. 2010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()
  47. Deprecate avcodec_check_dimensions() in favor of the function
  48. av_check_image_size() defined in libavcore/imgutils.h.
  49. 2010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer
  50. Increase size of the arrays AVFilterBuffer.data and
  51. AVFilterBuffer.linesize from 4 to 8.
  52. This change breaks libavfilter ABI.
  53. 2010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h
  54. Add functions av_fill_image_linesizes() and
  55. av_fill_image_pointers(), declared in libavcore/imgutils.h.
  56. 2010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h
  57. Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
  58. defined in libavcodec in favor of the newly added functions
  59. av_parse_video_size() and av_parse_video_rate() declared in
  60. libavcore/parseutils.h.
  61. 2010-07-23 - r24439 - lavu 50.23.0 - mathematics.h
  62. Add the M_PHI constant definition.
  63. 2010-07-22 - r24424 - lavfi 1.26.0 - media format generalization
  64. Add a type field to AVFilterLink.
  65. Change the field types:
  66. enum PixelFormat format -> int format in AVFilterBuffer
  67. enum PixelFormat *formats -> int *formats in AVFilterFormats
  68. enum PixelFormat *format -> int format in AVFilterLink
  69. Change the function signatures:
  70. AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
  71. AVFilterFormats *avfilter_make_format_list(const int *fmts);
  72. int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
  73. int avfilter_add_format (AVFilterFormats **avff, int fmt);
  74. AVFilterFormats *avfilter_all_colorspaces(void); ->
  75. AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
  76. This change breaks libavfilter API/ABI.
  77. 2010-07-21 - r24393 - lavcore 0.0.0
  78. Add libavcore.
  79. 2010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer
  80. Remove w and h fields from AVFilterBuffer.
  81. 2010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer
  82. Rename AVFilterPic to AVFilterBuffer.
  83. 2010-07-17 - r24278 - lavf 52.74.0 - url_fskip()
  84. Make url_fskip() return an int error code instead of void.
  85. 2010-07-11 - r24199 - lavc 52.83.0
  86. Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
  87. Add AVLPCType enum.
  88. Deprecate AVCodecContext.use_lpc.
  89. 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()
  90. Add a function for free the contents of a AVSubtitle generated by
  91. avcodec_decode_subtitle.
  92. 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h
  93. Make the bswap.h and intreadwrite.h API public.
  94. 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h
  95. Rename read/write_line() to av_read/write_image_line().
  96. 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()
  97. Add avfilter_copy_picref_props().
  98. 2010-07-03 - r24021 - lavc 52.79.0
  99. Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
  100. FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
  101. 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h
  102. Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
  103. lfg.h.
  104. 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()
  105. Extend av_parse_color() syntax, make it accept an alpha value specifier and
  106. set the alpha value to 255 by default.
  107. 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
  108. Add priv_data_size and priv_data_class to URLProtocol.
  109. 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()
  110. Add url_alloc() and url_connect().
  111. 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()
  112. Add av_register_protocol2(), deprecating av_register_protocol().
  113. 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()
  114. Add av_compare_mod() to libavutil/mathematics.h.
  115. 2010-06-05 - r23485 - lavu 50.18.0 - eval API
  116. Make the eval API public.
  117. 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
  118. Add AV_BASE64_SIZE() macro.
  119. 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()
  120. Add av_get_codec_tag_string().
  121. 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
  122. Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
  123. 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
  124. Add CODEC_CAP_EXPERIMENTAL flag.
  125. 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()
  126. Add av_get_random_seed().
  127. 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
  128. Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
  129. 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
  130. Add interlaced and top_field_first fields to AVFilterPicRef.
  131. 2010-05-01 - r23002 - lavf 52.62.0 - probe function
  132. Add av_probe_input_format2 to API, it allows ignoring probe
  133. results below given score and returns the actual probe score.
  134. 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
  135. Add a flag for av_metadata_set2() to disable overwriting of
  136. existing tags.
  137. 2010-04-01 - r22753 - lavc 52.66.0
  138. Add avcodec_get_edge_width().
  139. 2010-03-31 - r22750 - lavc 52.65.0
  140. Add avcodec_copy_context().
  141. 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
  142. Make av_match_ext() public.
  143. 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
  144. Move AVMediaType enum from libavcodec to libavutil.
  145. 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
  146. Define AVMediaType enum, and use it instead of enum CodecType, which
  147. is deprecated and will be dropped at the next major bump.
  148. 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
  149. Implement av_strerror().
  150. 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
  151. Support DCT-I and DST-I.
  152. 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
  153. Add AVFormatContext.start_time_realtime field.
  154. 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
  155. Add AVFilterPicRef.pos field.
  156. 2010-03-13 - r22501 - lavu 50.12.0 - error.h
  157. Move error code definitions from libavcodec/avcodec.h to
  158. the new public header libavutil/error.h.
  159. 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
  160. Add public FFT interface.
  161. 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
  162. Add av_stristr().
  163. 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
  164. Add av_tree_enumerate().
  165. 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
  166. Add av_compare_ts().
  167. 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
  168. Add sws_getCoefficients().
  169. 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
  170. Add a list of generic tag names, change 'author' -> 'artist',
  171. 'year' -> 'date'.
  172. 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
  173. Add av_get_pix_fmt().
  174. 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()
  175. Change constness attributes of sws_scale() parameters.
  176. 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
  177. Add a log_ctx parameter to avfilter_graph_config_links().
  178. 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()
  179. Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
  180. 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
  181. Change the avfilter_add_colorspace() signature, make it accept an
  182. (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
  183. 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
  184. Add avfilter_add_colorspace().
  185. 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
  186. Add av_match_ext(), it should be used in place of match_ext().
  187. 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
  188. Add av_guess_format(), it should be used in place of guess_format().
  189. 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
  190. Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
  191. AV_METADATA_DONT_STRDUP_VAL.
  192. 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
  193. Add av_d2str().
  194. 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
  195. Add avg_frame_rate.
  196. 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
  197. Introduce the av_bmg_next() function.
  198. 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
  199. Add a slice_dir parameter to avfilter_draw_slice().
  200. 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
  201. Remove the next field from AVFilter, this is not anymore required.
  202. 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
  203. Introduce the avfilter_next() function.
  204. 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
  205. Change the signature of avfilter_register() to make it return an
  206. int. This is required since now the registration operation may fail.
  207. 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
  208. Make the pixdesc.h API public.
  209. 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
  210. Add a next field to AVFilter, this is used for simplifying the
  211. registration and management of the registered filters.
  212. 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
  213. Add a description field to AVFilter.
  214. 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
  215. Change the interface of avfilter_make_format_list() from
  216. avfilter_make_format_list(int n, ...) to
  217. avfilter_make_format_list(enum PixelFormat *pix_fmts).
  218. 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
  219. Make avfilter_get_video_buffer() recursive and add the w and h
  220. parameters to it.
  221. 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
  222. Add w and h fields to AVFilterPic.
  223. 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
  224. This is now an unsigned int instead of a signed int.
  225. 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
  226. Add a pts field to AVSubtitle which gives the subtitle packet pts
  227. in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
  228. not work right without this.
  229. 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
  230. PKT_FLAG_KEY has been deprecated and will be dropped at the next
  231. major version. Use AV_PKT_FLAG_KEY instead.
  232. 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
  233. av_lockmgr_register() can be used to register a callback function
  234. that lavc (and in the future, libraries that depend on lavc) can use
  235. to implement mutexes. The application should provide a callback function
  236. that implements the AV_LOCK_* operations described in avcodec.h.
  237. When the lock manager is registered, FFmpeg is guaranteed to behave
  238. correctly in a multi-threaded application.
  239. 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()
  240. av_free_packet() is no longer an inline function. It is now exported.
  241. 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
  242. Please use NULL instead. This has been supported since r16506
  243. (lavf > 52.23.1, lavc > 52.10.0).
  244. 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
  245. The old decoding functions are deprecated, all new code should use the
  246. new functions avcodec_decode_video2(), avcodec_decode_audio3() and
  247. avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
  248. argument instead of a const uint8_t *buf / int buf_size pair.
  249. 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()
  250. Introduce the av_fifo_space() function.
  251. 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
  252. Move AVPacket declaration from libavformat/avformat.h to
  253. libavcodec/avcodec.h.
  254. 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
  255. Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
  256. PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
  257. Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
  258. PIX_FMT_BGR32_1 are now macros.
  259. avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
  260. Re-sort the enum PixelFormat list accordingly.
  261. This change breaks API/ABI backward compatibility.
  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. 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
  267. The Mersenne Twister PRNG implemented through the av_random* functions
  268. was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
  269. instead.
  270. 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
  271. av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
  272. and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
  273. and av_fifo_realloc2.
  274. In addition, the order of the function arguments of av_fifo_generic_read
  275. was changed to match av_fifo_generic_write.
  276. The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
  277. applications, they may not use sizeof() or directly access members.
  278. 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
  279. Introduce a new metadata API (see av_metadata_get() and friends).
  280. The old API is now deprecated and should not be used anymore. This especially
  281. includes the following structure fields:
  282. - AVFormatContext.title
  283. - AVFormatContext.author
  284. - AVFormatContext.copyright
  285. - AVFormatContext.comment
  286. - AVFormatContext.album
  287. - AVFormatContext.year
  288. - AVFormatContext.track
  289. - AVFormatContext.genre
  290. - AVStream.language
  291. - AVStream.filename
  292. - AVProgram.provider_name
  293. - AVProgram.name
  294. - AVChapter.title