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 2010-09-27 - r25236 - lavu 50.31.0 - av_set_options_string()
17 Move av_set_options_string() from libavfilter/parseutils.h to
20 2010-09-27 - r25227 - lavfi 1.47.0 - AVFilterLink
21 Make the AVFilterLink fields srcpad and dstpad store the pointers to
22 the source and destination pads, rather than their indexes.
24 2010-09-27 - r25225 - lavu 50.30.0 - av_get_token()
25 Move av_get_token() from libavfilter/parseutils.h to
28 2010-09-26 - r32368 - lsws 0.12.0 - swscale.h
29 Add the functions sws_alloc_context() and sws_init_context().
31 2010-09-26 - r25210 - lavu 50.29.0 - opt.h
32 Move libavcodec/opt.h to libavutil/opt.h.
34 2010-09-24 - r25174 - lavu 50.28.0 - av_log_set_flags()
35 Default of av_log() changed due to many problems to the old no repeat
36 detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
37 enabling it for your app!.
39 2010-09-24 - r25167 - lavc 52.90.0 - av_opt_show2()
40 Deprecate av_opt_show() in favor or av_opt_show2().
42 2010-09-14 - r25120 - lavu 50.27.0 - av_popcount()
43 Add av_popcount() to libavutil/common.h.
45 2010-09-08 - r25076 - lavu 50.26.0 - av_get_cpu_flags()
46 Add av_get_cpu_flags().
48 2010-09-07 - r25067 - lavcore 0.9.0 - av_image_copy()
51 2010-09-07 - r25064 - lavcore 0.8.0 - av_image_copy_plane()
52 Add av_image_copy_plane().
54 2010-09-07 - r25057 - lavcore 0.7.0 - imgutils.h
55 Adopt hierarchical scheme for the imgutils.h function names,
56 deprecate the old names.
58 2010-09-04 - r25040 - lavu 50.25.0 - AV_CPU_FLAG_*
59 Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
60 of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
62 2010-08-26 - r24936 - lavc 52.87.0 - avcodec_get_channel_layout()
63 Add avcodec_get_channel_layout() in audioconvert.h.
65 2010-08-20 - r24851 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
66 Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
68 2010-08-18 - r24827 - lavcore 0.5.0 - av_fill_image_max_pixstep()
69 Add av_fill_image_max_pixstep() in imgutils.h.
71 2010-08-17 - r24814 - lavu 50.24.0 - AV_NE()
74 2010-08-17 - r24811 - lavfi 1.36.0 - audio framework
75 Implement AVFilterBufferRefAudioProps struct for audio properties,
76 get_audio_buffer(), filter_samples() functions and related changes.
78 2010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()
79 Add av_get_image_linesize() in imgutils.h.
81 2010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef
82 Resize data and linesize arrays in AVFilterBufferRef to 8.
84 This change breaks libavfilter API/ABI.
86 2010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()
87 Add av_picture_data_copy in avcodec.h.
89 2010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()
90 Change avfilter_open() signature:
91 AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
92 int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
94 This change breaks libavfilter API/ABI.
96 2010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef
97 Add a type field to AVFilterBufferRef, and move video specific
98 properties to AVFilterBufferRefVideoProps.
100 This change breaks libavfilter API/ABI.
102 2010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink
103 Rename AVFilterLink fields:
104 AVFilterLink.srcpic -> AVFilterLink.src_buf
105 AVFilterLink.cur_pic -> AVFilterLink.cur_buf
106 AVFilterLink.outpic -> AVFilterLink.out_buf
108 2010-08-07 - r24731 - lavfi 1.30.0
109 Rename functions and fields:
110 avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
111 avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
112 AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
114 2010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef
115 Rename AVFilterPicRef to AVFilterBufferRef.
117 2010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer
118 Move format field from AVFilterBuffer to AVFilterPicRef.
120 2010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()
121 Deprecate avcodec_check_dimensions() in favor of the function
122 av_check_image_size() defined in libavcore/imgutils.h.
124 2010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer
125 Increase size of the arrays AVFilterBuffer.data and
126 AVFilterBuffer.linesize from 4 to 8.
128 This change breaks libavfilter ABI.
130 2010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h
131 Add functions av_fill_image_linesizes() and
132 av_fill_image_pointers(), declared in libavcore/imgutils.h.
134 2010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h
135 Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
136 defined in libavcodec in favor of the newly added functions
137 av_parse_video_size() and av_parse_video_rate() declared in
138 libavcore/parseutils.h.
140 2010-07-23 - r24439 - lavu 50.23.0 - mathematics.h
141 Add the M_PHI constant definition.
143 2010-07-22 - r24424 - lavfi 1.26.0 - media format generalization
144 Add a type field to AVFilterLink.
146 Change the field types:
147 enum PixelFormat format -> int format in AVFilterBuffer
148 enum PixelFormat *formats -> int *formats in AVFilterFormats
149 enum PixelFormat *format -> int format in AVFilterLink
151 Change the function signatures:
152 AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
153 AVFilterFormats *avfilter_make_format_list(const int *fmts);
155 int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
156 int avfilter_add_format (AVFilterFormats **avff, int fmt);
158 AVFilterFormats *avfilter_all_colorspaces(void); ->
159 AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
161 This change breaks libavfilter API/ABI.
163 2010-07-21 - r24393 - lavcore 0.0.0
166 2010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer
167 Remove w and h fields from AVFilterBuffer.
169 2010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer
170 Rename AVFilterPic to AVFilterBuffer.
172 2010-07-17 - r24278 - lavf 52.74.0 - url_fskip()
173 Make url_fskip() return an int error code instead of void.
175 2010-07-11 - r24199 - lavc 52.83.0
176 Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
178 Deprecate AVCodecContext.use_lpc.
180 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()
181 Add a function for free the contents of a AVSubtitle generated by
182 avcodec_decode_subtitle.
184 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h
185 Make the bswap.h and intreadwrite.h API public.
187 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h
188 Rename read/write_line() to av_read/write_image_line().
190 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()
191 Add avfilter_copy_picref_props().
193 2010-07-03 - r24021 - lavc 52.79.0
194 Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
195 FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
197 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h
198 Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
201 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()
202 Extend av_parse_color() syntax, make it accept an alpha value specifier and
203 set the alpha value to 255 by default.
205 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
206 Add priv_data_size and priv_data_class to URLProtocol.
208 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()
209 Add url_alloc() and url_connect().
211 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()
212 Add av_register_protocol2(), deprecating av_register_protocol().
214 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()
215 Add av_compare_mod() to libavutil/mathematics.h.
217 2010-06-05 - r23485 - lavu 50.18.0 - eval API
218 Make the eval API public.
220 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
221 Add AV_BASE64_SIZE() macro.
223 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()
224 Add av_get_codec_tag_string().
226 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
227 Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
229 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
230 Add CODEC_CAP_EXPERIMENTAL flag.
232 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()
233 Add av_get_random_seed().
235 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
236 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
238 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
239 Add interlaced and top_field_first fields to AVFilterPicRef.
241 2010-05-01 - r23002 - lavf 52.62.0 - probe function
242 Add av_probe_input_format2 to API, it allows ignoring probe
243 results below given score and returns the actual probe score.
245 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
246 Add a flag for av_metadata_set2() to disable overwriting of
249 2010-04-01 - r22753 - lavc 52.66.0
250 Add avcodec_get_edge_width().
252 2010-03-31 - r22750 - lavc 52.65.0
253 Add avcodec_copy_context().
255 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
256 Make av_match_ext() public.
258 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
259 Move AVMediaType enum from libavcodec to libavutil.
261 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
262 Define AVMediaType enum, and use it instead of enum CodecType, which
263 is deprecated and will be dropped at the next major bump.
265 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
266 Implement av_strerror().
268 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
269 Support DCT-I and DST-I.
271 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
272 Add AVFormatContext.start_time_realtime field.
274 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
275 Add AVFilterPicRef.pos field.
277 2010-03-13 - r22501 - lavu 50.12.0 - error.h
278 Move error code definitions from libavcodec/avcodec.h to
279 the new public header libavutil/error.h.
281 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
282 Add public FFT interface.
284 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
287 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
288 Add av_tree_enumerate().
290 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
293 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
294 Add sws_getCoefficients().
296 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
297 Add a list of generic tag names, change 'author' -> 'artist',
300 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
301 Add av_get_pix_fmt().
303 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()
304 Change constness attributes of sws_scale() parameters.
306 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
307 Add a log_ctx parameter to avfilter_graph_config_links().
309 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()
310 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
312 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
313 Change the avfilter_add_colorspace() signature, make it accept an
314 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
316 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
317 Add avfilter_add_colorspace().
319 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
320 Add av_match_ext(), it should be used in place of match_ext().
322 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
323 Add av_guess_format(), it should be used in place of guess_format().
325 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
326 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
327 AV_METADATA_DONT_STRDUP_VAL.
329 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
332 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
335 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
336 Introduce the av_bmg_next() function.
338 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
339 Add a slice_dir parameter to avfilter_draw_slice().
341 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
342 Remove the next field from AVFilter, this is not anymore required.
344 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
345 Introduce the avfilter_next() function.
347 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
348 Change the signature of avfilter_register() to make it return an
349 int. This is required since now the registration operation may fail.
351 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
352 Make the pixdesc.h API public.
354 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
355 Add a next field to AVFilter, this is used for simplifying the
356 registration and management of the registered filters.
358 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
359 Add a description field to AVFilter.
361 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
362 Change the interface of avfilter_make_format_list() from
363 avfilter_make_format_list(int n, ...) to
364 avfilter_make_format_list(enum PixelFormat *pix_fmts).
366 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
367 Make avfilter_get_video_buffer() recursive and add the w and h
370 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
371 Add w and h fields to AVFilterPic.
373 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
374 This is now an unsigned int instead of a signed int.
376 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
377 Add a pts field to AVSubtitle which gives the subtitle packet pts
378 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
379 not work right without this.
381 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
382 PKT_FLAG_KEY has been deprecated and will be dropped at the next
383 major version. Use AV_PKT_FLAG_KEY instead.
385 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
386 av_lockmgr_register() can be used to register a callback function
387 that lavc (and in the future, libraries that depend on lavc) can use
388 to implement mutexes. The application should provide a callback function
389 that implements the AV_LOCK_* operations described in avcodec.h.
390 When the lock manager is registered, FFmpeg is guaranteed to behave
391 correctly in a multi-threaded application.
393 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()
394 av_free_packet() is no longer an inline function. It is now exported.
396 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
397 Please use NULL instead. This has been supported since r16506
398 (lavf > 52.23.1, lavc > 52.10.0).
400 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
401 The old decoding functions are deprecated, all new code should use the
402 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
403 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
404 argument instead of a const uint8_t *buf / int buf_size pair.
406 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()
407 Introduce the av_fifo_space() function.
409 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
410 Move AVPacket declaration from libavformat/avformat.h to
411 libavcodec/avcodec.h.
413 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
414 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
415 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
416 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
417 PIX_FMT_BGR32_1 are now macros.
418 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
419 Re-sort the enum PixelFormat list accordingly.
420 This change breaks API/ABI backward compatibility.
422 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
423 Add the enum PixelFormat values:
424 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
425 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
427 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
428 The Mersenne Twister PRNG implemented through the av_random* functions
429 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
432 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
433 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
434 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
435 and av_fifo_realloc2.
436 In addition, the order of the function arguments of av_fifo_generic_read
437 was changed to match av_fifo_generic_write.
438 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
439 applications, they may not use sizeof() or directly access members.
441 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
442 Introduce a new metadata API (see av_metadata_get() and friends).
443 The old API is now deprecated and should not be used anymore. This especially
444 includes the following structure fields:
445 - AVFormatContext.title
446 - AVFormatContext.author
447 - AVFormatContext.copyright
448 - AVFormatContext.comment
449 - AVFormatContext.album
450 - AVFormatContext.year
451 - AVFormatContext.track
452 - AVFormatContext.genre
455 - AVProgram.provider_name