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Never assume the API of libav* to be stable unless at least 1 week has passed since
the last major version increase.
The last version increases were:
libavcodec: ?
libavdevice: ?
libavfilter: 2009-10-18
libavformat: ?
libpostproc: ?
libswscale: ?
libavutil: 2009-03-08
API changes, most recent first:
2010-06-05 - r23485 - lavu 50.18.0 - eval API
Make the eval API public.
2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
Add AV_BASE64_SIZE() macro.
2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string
Add av_get_codec_tag_string().
2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
Add sws_convertPalette8ToPacked32 and sws_convertPalette8ToPacked24
2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
Add CODEC_CAP_EXPERIMENTAL flag.
2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed
Add av_get_random_seed()
2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags
2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
Add interlaced and top_field_first fields to AVFilterPicRef.
2010-05-01 - r23002 - lavf 52.62.0 - probe function
Add av_probe_input_format2 to API, it allows ignoring probe
results below given score and returns the actual probe score.
2010-04-01 - r22806 - lavf 52.61.0 - metadata API
Add a flag for av_metadata_set2() to disable overwriting of
existing tags.
2010-04-01 - r22753 - lavc 52.66.0
Add avcodec_get_edge_width()
2010-03-31 - r22750 - lavc 52.65.0
Add avcodec_copy_context().
2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
Make av_match_ext() public.
2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
Move AVMediaType enum from libavcodec to libavutil.
2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
Define AVMediaType enum, and use it instead of enum CodecType, which
is deprecated and will be dropped at the next major bump.
2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
Implement av_strerror().
2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
Support DCT-I and DST-I
2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
Add AVFormatContext.start_time_realtime field.
2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
Add AVFilterPicRef.pos field.
2010-03-13 - r22501 - lavu 50.12.0 - error.h
Move error code definitions from libavcodec/avcodec.h to
the new public header libavutil/error.h.
2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
Add public FFT interface.
2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
Add av_stristr().
2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
Add av_tree_enumerate().
2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
Add av_compare_ts().
2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
Add sws_getCoefficients().
2010-02-01 - r21587 - lavf 52.50.0 - metadata API
Add a list of generic tag names, change 'author' -> 'artist',
'year' -> 'date'.
2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
Add av_get_pix_fmt().
2010-01-21 - r30381 - lsws 0.9.0 - sws_scale
Change constness attributes of sws_scale() parameters.
2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
Add a log_ctx parameter to avfilter_graph_config_links().
2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
Change the avfilter_add_colorspace() signature, make it accept an
(AVFilterFormats **) rather than an (AVFilterFormats *) as before.
2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
Add avfilter_add_colorspace().
2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
Add av_match_ext(), it should be used in place of match_ext().
2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
Add av_guess_format(), it should be used in place of guess_format().
2009-12-13 - r20834 - lavf 52.43.0 - metadata API
Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
Add av_d2str().
2009-12-13 - r20826 - lavc 52.42.0 - AVStream
Add avg_frame_rate.
2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
Introduce the av_bmg_next() function.
2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
Add a slice_dir parameter to avfilter_draw_slice().
2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
Remove the next field from AVFilter, this is not anymore required.
2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
Introduce the avfilter_next() function.
2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
Change the signature of avfilter_register() to make it return an
int. This is required since now the registration operation may fail.
2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
Make the pixdesc.h API public.
2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
Add a next field to AVFilter, this is used for simplifying the
registration and management of the registered filters.
2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
Add a description field to AVFilter.
2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
Change the interface of avfilter_make_format_list() from
avfilter_make_format_list(int n, ...) to
avfilter_make_format_list(enum PixelFormat *pix_fmts).
2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
Make avfilter_get_video_buffer() recursive and add the w and h
parameters to it.
2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
Add w and h fields to AVFilterPic.
2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
This is now an unsigned int instead of a signed int.
2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
Add a pts field to AVSubtitle which gives the subtitle packet pts
in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
not work right without this.
2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
PKT_FLAG_KEY has been deprecated and will be dropped at the next
major version. Use AV_PKT_FLAG_KEY instead.
2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
av_lockmgr_register() can be used to register a callback function
that lavc (and in the future, libraries that depend on lavc) can use
to implement mutexes. The application should provide a callback function
that implements the AV_LOCK_* operations described in avcodec.h.
When the lock manager is registered, FFmpeg is guaranteed to behave
correctly in a multi-threaded application.
2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
av_free_packet() is no longer an inline function. It is now exported.
2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
Please use NULL instead. This has been supported since r16506
(lavf > 52.23.1, lavc > 52.10.0).
2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
The old decoding functions are deprecated, all new code should use the
new functions avcodec_decode_video2(), avcodec_decode_audio3() and
avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
argument instead of a const uint8_t *buf / int buf_size pair.
2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
Introduce the av_fifo_space() function.
2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
Move AVPacket declaration from libavformat/avformat.h to
libavcodec/avcodec.h.
2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
PIX_FMT_BGR32_1 are now macros.
avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
Re-sort the enum PixelFormat list accordingly.
This change breaks API/ABI backward compatibility.
2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
Add the enum PixelFormat values:
PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
2009-03-21 - r18116 - lavu 50.0.0 - av_random*
The Mersenne Twister PRNG implemented through the av_random* functions
was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
instead.
2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
and av_fifo_realloc2.
In addition, the order of the function arguments of av_fifo_generic_read
was changed to match av_fifo_generic_write.
The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
applications, they may not use sizeof() or directly access members.
2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
Introduce a new metadata API (see av_metadata_get() and friends).
The old API is now deprecated and should not be used anymore. This especially
includes the following structure fields:
- AVFormatContext.title
- AVFormatContext.author
- AVFormatContext.copyright
- AVFormatContext.comment
- AVFormatContext.album
- AVFormatContext.year
- AVFormatContext.track
- AVFormatContext.genre
- AVStream.language
- AVStream.filename
- AVProgram.provider_name
- AVProgram.name
- AVChapter.title
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