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 2010-10-16 - r25502 - lavfi 1.52.0 - avfilter_graph_config()
17 Add the function avfilter_graph_config() in avfiltergraph.h.
19 2010-10-15 - r25493 - lavf 52.83.0 - metadata API
20 Change demuxers to export metadata in generic format and
21 muxers to accept generic format. Deprecate the public
24 2010-10-10 - r25441 - lavfi 1.49.0 - AVFilterLink.time_base
25 Add time_base field to AVFilterLink.
27 2010-09-27 - r25236 - lavu 50.31.0 - av_set_options_string()
28 Move av_set_options_string() from libavfilter/parseutils.h to
31 2010-09-27 - r25227 - lavfi 1.47.0 - AVFilterLink
32 Make the AVFilterLink fields srcpad and dstpad store the pointers to
33 the source and destination pads, rather than their indexes.
35 2010-09-27 - r25225 - lavu 50.30.0 - av_get_token()
36 Move av_get_token() from libavfilter/parseutils.h to
39 2010-09-26 - r32368 - lsws 0.12.0 - swscale.h
40 Add the functions sws_alloc_context() and sws_init_context().
42 2010-09-26 - r25210 - lavu 50.29.0 - opt.h
43 Move libavcodec/opt.h to libavutil/opt.h.
45 2010-09-24 - r25174 - lavu 50.28.0 - av_log_set_flags()
46 Default of av_log() changed due to many problems to the old no repeat
47 detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
48 enabling it for your app!.
50 2010-09-24 - r25167 - lavc 52.90.0 - av_opt_show2()
51 Deprecate av_opt_show() in favor or av_opt_show2().
53 2010-09-14 - r25120 - lavu 50.27.0 - av_popcount()
54 Add av_popcount() to libavutil/common.h.
56 2010-09-08 - r25076 - lavu 50.26.0 - av_get_cpu_flags()
57 Add av_get_cpu_flags().
59 2010-09-07 - r25067 - lavcore 0.9.0 - av_image_copy()
62 2010-09-07 - r25064 - lavcore 0.8.0 - av_image_copy_plane()
63 Add av_image_copy_plane().
65 2010-09-07 - r25057 - lavcore 0.7.0 - imgutils.h
66 Adopt hierarchical scheme for the imgutils.h function names,
67 deprecate the old names.
69 2010-09-04 - r25040 - lavu 50.25.0 - AV_CPU_FLAG_*
70 Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
71 of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
73 2010-08-26 - r24936 - lavc 52.87.0 - avcodec_get_channel_layout()
74 Add avcodec_get_channel_layout() in audioconvert.h.
76 2010-08-20 - r24851 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
77 Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
79 2010-08-18 - r24827 - lavcore 0.5.0 - av_fill_image_max_pixstep()
80 Add av_fill_image_max_pixstep() in imgutils.h.
82 2010-08-17 - r24814 - lavu 50.24.0 - AV_NE()
85 2010-08-17 - r24811 - lavfi 1.36.0 - audio framework
86 Implement AVFilterBufferRefAudioProps struct for audio properties,
87 get_audio_buffer(), filter_samples() functions and related changes.
89 2010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()
90 Add av_get_image_linesize() in imgutils.h.
92 2010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef
93 Resize data and linesize arrays in AVFilterBufferRef to 8.
95 This change breaks libavfilter API/ABI.
97 2010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()
98 Add av_picture_data_copy in avcodec.h.
100 2010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()
101 Change avfilter_open() signature:
102 AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
103 int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
105 This change breaks libavfilter API/ABI.
107 2010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef
108 Add a type field to AVFilterBufferRef, and move video specific
109 properties to AVFilterBufferRefVideoProps.
111 This change breaks libavfilter API/ABI.
113 2010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink
114 Rename AVFilterLink fields:
115 AVFilterLink.srcpic -> AVFilterLink.src_buf
116 AVFilterLink.cur_pic -> AVFilterLink.cur_buf
117 AVFilterLink.outpic -> AVFilterLink.out_buf
119 2010-08-07 - r24731 - lavfi 1.30.0
120 Rename functions and fields:
121 avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
122 avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
123 AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
125 2010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef
126 Rename AVFilterPicRef to AVFilterBufferRef.
128 2010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer
129 Move format field from AVFilterBuffer to AVFilterPicRef.
131 2010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()
132 Deprecate avcodec_check_dimensions() in favor of the function
133 av_check_image_size() defined in libavcore/imgutils.h.
135 2010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer
136 Increase size of the arrays AVFilterBuffer.data and
137 AVFilterBuffer.linesize from 4 to 8.
139 This change breaks libavfilter ABI.
141 2010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h
142 Add functions av_fill_image_linesizes() and
143 av_fill_image_pointers(), declared in libavcore/imgutils.h.
145 2010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h
146 Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
147 defined in libavcodec in favor of the newly added functions
148 av_parse_video_size() and av_parse_video_rate() declared in
149 libavcore/parseutils.h.
151 2010-07-23 - r24439 - lavu 50.23.0 - mathematics.h
152 Add the M_PHI constant definition.
154 2010-07-22 - r24424 - lavfi 1.26.0 - media format generalization
155 Add a type field to AVFilterLink.
157 Change the field types:
158 enum PixelFormat format -> int format in AVFilterBuffer
159 enum PixelFormat *formats -> int *formats in AVFilterFormats
160 enum PixelFormat *format -> int format in AVFilterLink
162 Change the function signatures:
163 AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
164 AVFilterFormats *avfilter_make_format_list(const int *fmts);
166 int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
167 int avfilter_add_format (AVFilterFormats **avff, int fmt);
169 AVFilterFormats *avfilter_all_colorspaces(void); ->
170 AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
172 This change breaks libavfilter API/ABI.
174 2010-07-21 - r24393 - lavcore 0.0.0
177 2010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer
178 Remove w and h fields from AVFilterBuffer.
180 2010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer
181 Rename AVFilterPic to AVFilterBuffer.
183 2010-07-17 - r24278 - lavf 52.74.0 - url_fskip()
184 Make url_fskip() return an int error code instead of void.
186 2010-07-11 - r24199 - lavc 52.83.0
187 Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
189 Deprecate AVCodecContext.use_lpc.
191 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()
192 Add a function for free the contents of a AVSubtitle generated by
193 avcodec_decode_subtitle.
195 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h
196 Make the bswap.h and intreadwrite.h API public.
198 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h
199 Rename read/write_line() to av_read/write_image_line().
201 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()
202 Add avfilter_copy_picref_props().
204 2010-07-03 - r24021 - lavc 52.79.0
205 Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
206 FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
208 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h
209 Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
212 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()
213 Extend av_parse_color() syntax, make it accept an alpha value specifier and
214 set the alpha value to 255 by default.
216 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
217 Add priv_data_size and priv_data_class to URLProtocol.
219 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()
220 Add url_alloc() and url_connect().
222 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()
223 Add av_register_protocol2(), deprecating av_register_protocol().
225 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()
226 Add av_compare_mod() to libavutil/mathematics.h.
228 2010-06-05 - r23485 - lavu 50.18.0 - eval API
229 Make the eval API public.
231 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
232 Add AV_BASE64_SIZE() macro.
234 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()
235 Add av_get_codec_tag_string().
237 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
238 Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
240 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
241 Add CODEC_CAP_EXPERIMENTAL flag.
243 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()
244 Add av_get_random_seed().
246 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
247 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
249 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
250 Add interlaced and top_field_first fields to AVFilterPicRef.
252 2010-05-01 - r23002 - lavf 52.62.0 - probe function
253 Add av_probe_input_format2 to API, it allows ignoring probe
254 results below given score and returns the actual probe score.
256 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
257 Add a flag for av_metadata_set2() to disable overwriting of
260 2010-04-01 - r22753 - lavc 52.66.0
261 Add avcodec_get_edge_width().
263 2010-03-31 - r22750 - lavc 52.65.0
264 Add avcodec_copy_context().
266 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
267 Make av_match_ext() public.
269 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
270 Move AVMediaType enum from libavcodec to libavutil.
272 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
273 Define AVMediaType enum, and use it instead of enum CodecType, which
274 is deprecated and will be dropped at the next major bump.
276 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
277 Implement av_strerror().
279 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
280 Support DCT-I and DST-I.
282 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
283 Add AVFormatContext.start_time_realtime field.
285 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
286 Add AVFilterPicRef.pos field.
288 2010-03-13 - r22501 - lavu 50.12.0 - error.h
289 Move error code definitions from libavcodec/avcodec.h to
290 the new public header libavutil/error.h.
292 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
293 Add public FFT interface.
295 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
298 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
299 Add av_tree_enumerate().
301 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
304 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
305 Add sws_getCoefficients().
307 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
308 Add a list of generic tag names, change 'author' -> 'artist',
311 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
312 Add av_get_pix_fmt().
314 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()
315 Change constness attributes of sws_scale() parameters.
317 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
318 Add a log_ctx parameter to avfilter_graph_config_links().
320 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()
321 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
323 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
324 Change the avfilter_add_colorspace() signature, make it accept an
325 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
327 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
328 Add avfilter_add_colorspace().
330 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
331 Add av_match_ext(), it should be used in place of match_ext().
333 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
334 Add av_guess_format(), it should be used in place of guess_format().
336 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
337 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
338 AV_METADATA_DONT_STRDUP_VAL.
340 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
343 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
346 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
347 Introduce the av_bmg_next() function.
349 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
350 Add a slice_dir parameter to avfilter_draw_slice().
352 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
353 Remove the next field from AVFilter, this is not anymore required.
355 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
356 Introduce the avfilter_next() function.
358 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
359 Change the signature of avfilter_register() to make it return an
360 int. This is required since now the registration operation may fail.
362 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
363 Make the pixdesc.h API public.
365 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
366 Add a next field to AVFilter, this is used for simplifying the
367 registration and management of the registered filters.
369 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
370 Add a description field to AVFilter.
372 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
373 Change the interface of avfilter_make_format_list() from
374 avfilter_make_format_list(int n, ...) to
375 avfilter_make_format_list(enum PixelFormat *pix_fmts).
377 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
378 Make avfilter_get_video_buffer() recursive and add the w and h
381 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
382 Add w and h fields to AVFilterPic.
384 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
385 This is now an unsigned int instead of a signed int.
387 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
388 Add a pts field to AVSubtitle which gives the subtitle packet pts
389 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
390 not work right without this.
392 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
393 PKT_FLAG_KEY has been deprecated and will be dropped at the next
394 major version. Use AV_PKT_FLAG_KEY instead.
396 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
397 av_lockmgr_register() can be used to register a callback function
398 that lavc (and in the future, libraries that depend on lavc) can use
399 to implement mutexes. The application should provide a callback function
400 that implements the AV_LOCK_* operations described in avcodec.h.
401 When the lock manager is registered, FFmpeg is guaranteed to behave
402 correctly in a multi-threaded application.
404 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()
405 av_free_packet() is no longer an inline function. It is now exported.
407 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
408 Please use NULL instead. This has been supported since r16506
409 (lavf > 52.23.1, lavc > 52.10.0).
411 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
412 The old decoding functions are deprecated, all new code should use the
413 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
414 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
415 argument instead of a const uint8_t *buf / int buf_size pair.
417 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()
418 Introduce the av_fifo_space() function.
420 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
421 Move AVPacket declaration from libavformat/avformat.h to
422 libavcodec/avcodec.h.
424 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
425 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
426 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
427 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
428 PIX_FMT_BGR32_1 are now macros.
429 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
430 Re-sort the enum PixelFormat list accordingly.
431 This change breaks API/ABI backward compatibility.
433 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
434 Add the enum PixelFormat values:
435 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
436 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
438 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
439 The Mersenne Twister PRNG implemented through the av_random* functions
440 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
443 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
444 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
445 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
446 and av_fifo_realloc2.
447 In addition, the order of the function arguments of av_fifo_generic_read
448 was changed to match av_fifo_generic_write.
449 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
450 applications, they may not use sizeof() or directly access members.
452 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
453 Introduce a new metadata API (see av_metadata_get() and friends).
454 The old API is now deprecated and should not be used anymore. This especially
455 includes the following structure fields:
456 - AVFormatContext.title
457 - AVFormatContext.author
458 - AVFormatContext.copyright
459 - AVFormatContext.comment
460 - AVFormatContext.album
461 - AVFormatContext.year
462 - AVFormatContext.track
463 - AVFormatContext.genre
466 - AVProgram.provider_name