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:
7 libavfilter: 2009-10-18
14 API changes, most recent first:
16 2010-09-07 - r25067 - lavcore 0.9.0 - av_image_copy()
19 2010-09-07 - r25064 - lavcore 0.8.0 - av_image_copy_plane()
20 Add av_image_copy_plane().
22 2010-09-07 - r25057 - lavcore 0.7.0 - imgutils.h
23 Adopt hierarchical scheme for the imgutils.h function names,
24 deprecate the old names.
26 2010-09-04 - r25040 - lavu 50.25.0 - AV_CPU_FLAG_*
27 Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
28 of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
30 2010-08-26 - r24936 - lavc 52.87.0 - avcodec_get_channel_layout()
31 Add avcodec_get_channel_layout() in audioconvert.h.
33 2010-08-20 - r24851 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
34 Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
36 2010-08-18 - r24827 - lavcore 0.5.0 - av_fill_image_max_pixstep()
37 Add av_fill_image_max_pixstep() in imgutils.h.
39 2010-08-17 - r24814 - lavu 50.24.0 - AV_NE()
42 2010-08-17 - r24811 - lavfi 1.36.0 - audio framework
43 Implement AVFilterBufferRefAudioProps struct for audio properties,
44 get_audio_buffer(), filter_samples() functions and related changes.
46 2010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()
47 Add av_get_image_linesize() in imgutils.h.
49 2010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef
50 Resize data and linesize arrays in AVFilterBufferRef to 8.
52 This change breaks libavfilter API/ABI.
54 2010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()
55 Add av_picture_data_copy in avcodec.h.
57 2010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()
58 Change avfilter_open() signature:
59 AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
60 int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
62 This change breaks libavfilter API/ABI.
64 2010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef
65 Add a type field to AVFilterBufferRef, and move video specific
66 properties to AVFilterBufferRefVideoProps.
68 This change breaks libavfilter API/ABI.
70 2010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink
71 Rename AVFilterLink fields:
72 AVFilterLink.srcpic -> AVFilterLink.src_buf
73 AVFilterLink.cur_pic -> AVFilterLink.cur_buf
74 AVFilterLink.outpic -> AVFilterLink.out_buf
76 2010-08-07 - r24731 - lavfi 1.30.0
77 Rename functions and fields:
78 avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
79 avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
80 AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
82 2010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef
83 Rename AVFilterPicRef to AVFilterBufferRef.
85 2010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer
86 Move format field from AVFilterBuffer to AVFilterPicRef.
88 2010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()
89 Deprecate avcodec_check_dimensions() in favor of the function
90 av_check_image_size() defined in libavcore/imgutils.h.
92 2010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer
93 Increase size of the arrays AVFilterBuffer.data and
94 AVFilterBuffer.linesize from 4 to 8.
96 This change breaks libavfilter ABI.
98 2010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h
99 Add functions av_fill_image_linesizes() and
100 av_fill_image_pointers(), declared in libavcore/imgutils.h.
102 2010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h
103 Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
104 defined in libavcodec in favor of the newly added functions
105 av_parse_video_size() and av_parse_video_rate() declared in
106 libavcore/parseutils.h.
108 2010-07-23 - r24439 - lavu 50.23.0 - mathematics.h
109 Add the M_PHI constant definition.
111 2010-07-22 - r24424 - lavfi 1.26.0 - media format generalization
112 Add a type field to AVFilterLink.
114 Change the field types:
115 enum PixelFormat format -> int format in AVFilterBuffer
116 enum PixelFormat *formats -> int *formats in AVFilterFormats
117 enum PixelFormat *format -> int format in AVFilterLink
119 Change the function signatures:
120 AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
121 AVFilterFormats *avfilter_make_format_list(const int *fmts);
123 int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
124 int avfilter_add_format (AVFilterFormats **avff, int fmt);
126 AVFilterFormats *avfilter_all_colorspaces(void); ->
127 AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
129 This change breaks libavfilter API/ABI.
131 2010-07-21 - r24393 - lavcore 0.0.0
134 2010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer
135 Remove w and h fields from AVFilterBuffer.
137 2010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer
138 Rename AVFilterPic to AVFilterBuffer.
140 2010-07-17 - r24278 - lavf 52.74.0 - url_fskip()
141 Make url_fskip() return an int error code instead of void.
143 2010-07-11 - r24199 - lavc 52.83.0
144 Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
146 Deprecate AVCodecContext.use_lpc.
148 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()
149 Add a function for free the contents of a AVSubtitle generated by
150 avcodec_decode_subtitle.
152 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h
153 Make the bswap.h and intreadwrite.h API public.
155 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h
156 Rename read/write_line() to av_read/write_image_line().
158 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()
159 Add avfilter_copy_picref_props().
161 2010-07-03 - r24021 - lavc 52.79.0
162 Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
163 FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
165 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h
166 Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
169 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()
170 Extend av_parse_color() syntax, make it accept an alpha value specifier and
171 set the alpha value to 255 by default.
173 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
174 Add priv_data_size and priv_data_class to URLProtocol.
176 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()
177 Add url_alloc() and url_connect().
179 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()
180 Add av_register_protocol2(), deprecating av_register_protocol().
182 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()
183 Add av_compare_mod() to libavutil/mathematics.h.
185 2010-06-05 - r23485 - lavu 50.18.0 - eval API
186 Make the eval API public.
188 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
189 Add AV_BASE64_SIZE() macro.
191 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()
192 Add av_get_codec_tag_string().
194 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
195 Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
197 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
198 Add CODEC_CAP_EXPERIMENTAL flag.
200 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()
201 Add av_get_random_seed().
203 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
204 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
206 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
207 Add interlaced and top_field_first fields to AVFilterPicRef.
209 2010-05-01 - r23002 - lavf 52.62.0 - probe function
210 Add av_probe_input_format2 to API, it allows ignoring probe
211 results below given score and returns the actual probe score.
213 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
214 Add a flag for av_metadata_set2() to disable overwriting of
217 2010-04-01 - r22753 - lavc 52.66.0
218 Add avcodec_get_edge_width().
220 2010-03-31 - r22750 - lavc 52.65.0
221 Add avcodec_copy_context().
223 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
224 Make av_match_ext() public.
226 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
227 Move AVMediaType enum from libavcodec to libavutil.
229 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
230 Define AVMediaType enum, and use it instead of enum CodecType, which
231 is deprecated and will be dropped at the next major bump.
233 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
234 Implement av_strerror().
236 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
237 Support DCT-I and DST-I.
239 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
240 Add AVFormatContext.start_time_realtime field.
242 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
243 Add AVFilterPicRef.pos field.
245 2010-03-13 - r22501 - lavu 50.12.0 - error.h
246 Move error code definitions from libavcodec/avcodec.h to
247 the new public header libavutil/error.h.
249 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
250 Add public FFT interface.
252 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
255 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
256 Add av_tree_enumerate().
258 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
261 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
262 Add sws_getCoefficients().
264 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
265 Add a list of generic tag names, change 'author' -> 'artist',
268 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
269 Add av_get_pix_fmt().
271 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()
272 Change constness attributes of sws_scale() parameters.
274 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
275 Add a log_ctx parameter to avfilter_graph_config_links().
277 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()
278 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
280 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
281 Change the avfilter_add_colorspace() signature, make it accept an
282 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
284 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
285 Add avfilter_add_colorspace().
287 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
288 Add av_match_ext(), it should be used in place of match_ext().
290 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
291 Add av_guess_format(), it should be used in place of guess_format().
293 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
294 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
295 AV_METADATA_DONT_STRDUP_VAL.
297 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
300 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
303 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
304 Introduce the av_bmg_next() function.
306 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
307 Add a slice_dir parameter to avfilter_draw_slice().
309 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
310 Remove the next field from AVFilter, this is not anymore required.
312 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
313 Introduce the avfilter_next() function.
315 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
316 Change the signature of avfilter_register() to make it return an
317 int. This is required since now the registration operation may fail.
319 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
320 Make the pixdesc.h API public.
322 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
323 Add a next field to AVFilter, this is used for simplifying the
324 registration and management of the registered filters.
326 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
327 Add a description field to AVFilter.
329 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
330 Change the interface of avfilter_make_format_list() from
331 avfilter_make_format_list(int n, ...) to
332 avfilter_make_format_list(enum PixelFormat *pix_fmts).
334 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
335 Make avfilter_get_video_buffer() recursive and add the w and h
338 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
339 Add w and h fields to AVFilterPic.
341 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
342 This is now an unsigned int instead of a signed int.
344 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
345 Add a pts field to AVSubtitle which gives the subtitle packet pts
346 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
347 not work right without this.
349 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
350 PKT_FLAG_KEY has been deprecated and will be dropped at the next
351 major version. Use AV_PKT_FLAG_KEY instead.
353 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
354 av_lockmgr_register() can be used to register a callback function
355 that lavc (and in the future, libraries that depend on lavc) can use
356 to implement mutexes. The application should provide a callback function
357 that implements the AV_LOCK_* operations described in avcodec.h.
358 When the lock manager is registered, FFmpeg is guaranteed to behave
359 correctly in a multi-threaded application.
361 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()
362 av_free_packet() is no longer an inline function. It is now exported.
364 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
365 Please use NULL instead. This has been supported since r16506
366 (lavf > 52.23.1, lavc > 52.10.0).
368 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
369 The old decoding functions are deprecated, all new code should use the
370 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
371 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
372 argument instead of a const uint8_t *buf / int buf_size pair.
374 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()
375 Introduce the av_fifo_space() function.
377 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
378 Move AVPacket declaration from libavformat/avformat.h to
379 libavcodec/avcodec.h.
381 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
382 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
383 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
384 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
385 PIX_FMT_BGR32_1 are now macros.
386 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
387 Re-sort the enum PixelFormat list accordingly.
388 This change breaks API/ABI backward compatibility.
390 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
391 Add the enum PixelFormat values:
392 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
393 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
395 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
396 The Mersenne Twister PRNG implemented through the av_random* functions
397 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
400 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
401 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
402 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
403 and av_fifo_realloc2.
404 In addition, the order of the function arguments of av_fifo_generic_read
405 was changed to match av_fifo_generic_write.
406 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
407 applications, they may not use sizeof() or directly access members.
409 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
410 Introduce a new metadata API (see av_metadata_get() and friends).
411 The old API is now deprecated and should not be used anymore. This especially
412 includes the following structure fields:
413 - AVFormatContext.title
414 - AVFormatContext.author
415 - AVFormatContext.copyright
416 - AVFormatContext.comment
417 - AVFormatContext.album
418 - AVFormatContext.year
419 - AVFormatContext.track
420 - AVFormatContext.genre
423 - AVProgram.provider_name