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[libav.git] / doc / APIchanges
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06d19718
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1Never assume the API of libav* to be stable unless at least 1 week has passed since
2the last major version increase.
3The last version increases were:
4libavcodec: ?
5libavdevice: ?
c3b27a3d 6libavfilter: 2009-10-18
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7libavformat: ?
8libpostproc: ?
9libswscale: ?
10libavutil: 2009-03-08
11
12
13API changes, most recent first:
14
ca76a119
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152010-02-01 - r21587 - lavf 52.50.0 - metadata API
16 Add a list of generic tag names, change 'author' -> 'artist',
17 'year' -> 'date'.
18
14ace37e
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192010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
20 Add av_get_pix_fmt().
21
2d187e23
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222010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
23 Add a log_ctx parameter to avfilter_graph_config_links().
24
715cff9a 252010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
1c790092 26 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
715cff9a 27
1e289b09
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282010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
29 Change the avfilter_add_colorspace() signature, make it accept an
30 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
31
a2b16627
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322010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
33 Add avfilter_add_colorspace().
34
79c2f2d3
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352010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
36 Add av_match_ext(), it should be used in place of match_ext().
37
bb1a8793
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382010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
39 Add av_guess_format(), it should be used in place of guess_format().
40
b8f11ec8 412009-12-13 - r20834 - lavf 52.43.0 - metadata API
f69d394f 42 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
b8f11ec8 43
60a92a77 442009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
f69d394f 45 Add av_d2str().
60a92a77 46
c3d15329 472009-12-13 - r20826 - lavc 52.42.0 - AVStream
f69d394f 48 Add avg_frame_rate.
c3d15329 49
54c24216
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502009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
51 Introduce the av_bmg_next() function.
52
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532009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
54 Add a slice_dir parameter to avfilter_draw_slice().
55
7cab9a66
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562009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
57 Remove the next field from AVFilter, this is not anymore required.
58
b5a683eb
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592009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
60 Introduce the avfilter_next() function.
61
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622009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
63 Change the signature of avfilter_register() to make it return an
64 int. This is required since now the registration operation may fail.
65
d0df2fcc
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662009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
67 Make the pixdesc.h API public.
68
290d4a44
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692009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
70 Add a next field to AVFilter, this is used for simplifying the
71 registration and management of the registered filters.
72
54116673
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732009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
74 Add a description field to AVFilter.
01537e9f 75
027e85d8
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762009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
77 Change the interface of avfilter_make_format_list() from
78 avfilter_make_format_list(int n, ...) to
79 avfilter_make_format_list(enum PixelFormat *pix_fmts).
80
c3b27a3d
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812009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
82 Make avfilter_get_video_buffer() recursive and add the w and h
83 parameters to it.
84
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852009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
86 Added w and h fields to AVFilterPic.
87
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882009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
89 This is now an unsigned int instead of a signed int.
90
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912009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
92 Added a pts field to AVSubtitle which gives the subtitle's packet
93 PTS in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
94 not work right without this.
95
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962009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
97 PKT_FLAG_KEY has been deprecated and will be dropped for the next
98 major version. Use AV_PKT_FLAG_KEY instead.
99
f988ce6c
1002009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
101 av_lockmgr_register() can be used to register a callback function
102 that lavc (and in the future, libraries that depend on lavc) can use
103 to implement mutexes. The application should provide a callback function
104 the implements the AV_LOCK_* operations described in avcodec.h.
105 When the lock manager is registered FFmpeg is guaranteed to behave
106 correct also in a multi-threaded application.
107
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1082009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
109 av_free_packet() is no longer an inline function. It is now exported.
110
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1112009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
112 Please use NULL instead. This has been supported since r16506
113 (lavf > 52.23.1, lavc > 52.10.0).
114
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1152009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
116 The old decoding functions are deprecated, all new code should use the
117 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
118 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
119 argument instead of a const uint8_t *buf / int buf_size pair.
120
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1212009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
122 Introduce the av_fifo_space() function.
123
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1242009-04-02 - r18317 - lavc 52.23.0 - AVPacket
125 Move AVPacket declaration from libavformat/avformat.h to
126 libavcodec/avcodec.h.
127
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1282009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
129 Make the pixel formats: PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
130 PIX_FMT_BGRA, which were defined as macros, defined as enum
131 PixelFormat values, and viceversa make PIX_FMT_RGB32,
132 PIX_FMT_RGB32_1, PIX_FMT_BGR32, PIX_FMT_BGR32_1 defined as macros.
133 Also make avcodec_get_pix_fmt() recognize the "rgb32" and "bgr32"
134 aliases.
f3370e14 135 Re-sort the enum PixelFormat list accordingly.
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136 This change breaks API/ABI backward compatibility.
137
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1382009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
139 Add the enum PixelFormat values:
140 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
141 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
142
b4656e6b 1432009-03-21 - r18116 - lavu 50.0.0 - av_random*
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144 The Mersenne Twister PRNG implemented through the av_random* functions
145 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
146 instead.
147
889cdae8
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1482009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
149 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
150 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
151 and av_fifo_realloc2.
152 In addition, the order of the function arguments of av_fifo_generic_read
153 were changed to match av_fifo_generic_write.
154 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
155 applications, they may not use sizeof() or directly access members.
22d4f236 156
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1572009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
158 Introduce a new metadata API (see av_metadata_get() and friends).
159 The old API is now deprecated and should not be used anymore. This especially
429d6b21 160 includes the following structure fields:
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161 - AVFormatContext.title
162 - AVFormatContext.author
163 - AVFormatContext.copyright
164 - AVFormatContext.comment
165 - AVFormatContext.album
166 - AVFormatContext.year
167 - AVFormatContext.track
168 - AVFormatContext.genre
169 - AVStream.language
170 - AVStream.filename
171 - AVProgram.provider_name
172 - AVProgram.name
173 - AVChapter.title