Clearer CODEC_CAP_DR1 documentation.
[libav.git] / doc / APIchanges
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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
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152010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
16 Implement av_strerror().
17
69087742 182010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
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19 Support DCT-I and DST-I
20
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212010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
22 Add AVFormatContext.start_time_realtime field.
23
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242010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
25 Add AVFilterPicRef.pos field.
26
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272010-03-13 - r22501 - lavu 50.12.0 - error.h
28 Move error code definitions from libavcodec/avcodec.h to
29 the new public header libavutil/error.h.
30
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312010-03-07 - r22291 - lavc 52.56.0 - avfft.h
32 Add public FFT interface.
33
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342010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
35 Add av_stristr().
36
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372010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
38 Add av_tree_enumerate().
39
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402010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
41 Add av_compare_ts().
42
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432010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
44 Add sws_getCoefficients().
45
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462010-02-01 - r21587 - lavf 52.50.0 - metadata API
47 Add a list of generic tag names, change 'author' -> 'artist',
48 'year' -> 'date'.
49
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502010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
51 Add av_get_pix_fmt().
52
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532010-01-21 - r30381 - lsws 0.9.0 - sws_scale
54 Change constness attributes of sws_scale() parameters.
55
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562010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
57 Add a log_ctx parameter to avfilter_graph_config_links().
58
715cff9a 592010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
1c790092 60 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
715cff9a 61
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622010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
63 Change the avfilter_add_colorspace() signature, make it accept an
64 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
65
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662010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
67 Add avfilter_add_colorspace().
68
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692010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
70 Add av_match_ext(), it should be used in place of match_ext().
71
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722010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
73 Add av_guess_format(), it should be used in place of guess_format().
74
b8f11ec8 752009-12-13 - r20834 - lavf 52.43.0 - metadata API
f69d394f 76 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
b8f11ec8 77
60a92a77 782009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
f69d394f 79 Add av_d2str().
60a92a77 80
c3d15329 812009-12-13 - r20826 - lavc 52.42.0 - AVStream
f69d394f 82 Add avg_frame_rate.
c3d15329 83
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842009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
85 Introduce the av_bmg_next() function.
86
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872009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
88 Add a slice_dir parameter to avfilter_draw_slice().
89
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902009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
91 Remove the next field from AVFilter, this is not anymore required.
92
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932009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
94 Introduce the avfilter_next() function.
95
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962009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
97 Change the signature of avfilter_register() to make it return an
98 int. This is required since now the registration operation may fail.
99
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1002009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
101 Make the pixdesc.h API public.
102
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1032009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
104 Add a next field to AVFilter, this is used for simplifying the
105 registration and management of the registered filters.
106
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1072009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
108 Add a description field to AVFilter.
01537e9f 109
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1102009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
111 Change the interface of avfilter_make_format_list() from
112 avfilter_make_format_list(int n, ...) to
113 avfilter_make_format_list(enum PixelFormat *pix_fmts).
114
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1152009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
116 Make avfilter_get_video_buffer() recursive and add the w and h
117 parameters to it.
118
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1192009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
120 Added w and h fields to AVFilterPic.
121
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1222009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
123 This is now an unsigned int instead of a signed int.
124
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1252009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
126 Added a pts field to AVSubtitle which gives the subtitle's packet
127 PTS in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
128 not work right without this.
129
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1302009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
131 PKT_FLAG_KEY has been deprecated and will be dropped for the next
132 major version. Use AV_PKT_FLAG_KEY instead.
133
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1342009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
135 av_lockmgr_register() can be used to register a callback function
136 that lavc (and in the future, libraries that depend on lavc) can use
137 to implement mutexes. The application should provide a callback function
138 the implements the AV_LOCK_* operations described in avcodec.h.
139 When the lock manager is registered FFmpeg is guaranteed to behave
140 correct also in a multi-threaded application.
141
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1422009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
143 av_free_packet() is no longer an inline function. It is now exported.
144
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1452009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
146 Please use NULL instead. This has been supported since r16506
147 (lavf > 52.23.1, lavc > 52.10.0).
148
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1492009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
150 The old decoding functions are deprecated, all new code should use the
151 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
152 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
153 argument instead of a const uint8_t *buf / int buf_size pair.
154
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1552009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
156 Introduce the av_fifo_space() function.
157
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1582009-04-02 - r18317 - lavc 52.23.0 - AVPacket
159 Move AVPacket declaration from libavformat/avformat.h to
160 libavcodec/avcodec.h.
161
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1622009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
163 Make the pixel formats: PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
164 PIX_FMT_BGRA, which were defined as macros, defined as enum
165 PixelFormat values, and viceversa make PIX_FMT_RGB32,
166 PIX_FMT_RGB32_1, PIX_FMT_BGR32, PIX_FMT_BGR32_1 defined as macros.
167 Also make avcodec_get_pix_fmt() recognize the "rgb32" and "bgr32"
168 aliases.
f3370e14 169 Re-sort the enum PixelFormat list accordingly.
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170 This change breaks API/ABI backward compatibility.
171
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1722009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
173 Add the enum PixelFormat values:
174 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
175 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
176
b4656e6b 1772009-03-21 - r18116 - lavu 50.0.0 - av_random*
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178 The Mersenne Twister PRNG implemented through the av_random* functions
179 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
180 instead.
181
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1822009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
183 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
184 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
185 and av_fifo_realloc2.
186 In addition, the order of the function arguments of av_fifo_generic_read
187 were changed to match av_fifo_generic_write.
188 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
189 applications, they may not use sizeof() or directly access members.
22d4f236 190
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1912009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
192 Introduce a new metadata API (see av_metadata_get() and friends).
193 The old API is now deprecated and should not be used anymore. This especially
429d6b21 194 includes the following structure fields:
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195 - AVFormatContext.title
196 - AVFormatContext.author
197 - AVFormatContext.copyright
198 - AVFormatContext.comment
199 - AVFormatContext.album
200 - AVFormatContext.year
201 - AVFormatContext.track
202 - AVFormatContext.genre
203 - AVStream.language
204 - AVStream.filename
205 - AVProgram.provider_name
206 - AVProgram.name
207 - AVChapter.title