59356c5f0b22920bc29247bab18a627799dbf5a4
[libav.git] / doc / APIchanges
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:
4 libavcodec: ?
5 libavdevice: ?
6 libavfilter: 2009-10-18
7 libavformat: ?
8 libpostproc: ?
9 libswscale: ?
10 libavutil: 2009-03-08
11
12
13 API changes, most recent first:
14
15 2010-03-13 - r22501 - lavu 50.12.0 - error.h
16 Move error code definitions from libavcodec/avcodec.h to
17 the new public header libavutil/error.h.
18
19 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
20 Add public FFT interface.
21
22 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
23 Add av_stristr().
24
25 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
26 Add av_tree_enumerate().
27
28 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
29 Add av_compare_ts().
30
31 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
32 Add sws_getCoefficients().
33
34 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
35 Add a list of generic tag names, change 'author' -> 'artist',
36 'year' -> 'date'.
37
38 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
39 Add av_get_pix_fmt().
40
41 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale
42 Change constness attributes of sws_scale() parameters.
43
44 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
45 Add a log_ctx parameter to avfilter_graph_config_links().
46
47 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
48 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
49
50 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
51 Change the avfilter_add_colorspace() signature, make it accept an
52 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
53
54 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
55 Add avfilter_add_colorspace().
56
57 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
58 Add av_match_ext(), it should be used in place of match_ext().
59
60 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
61 Add av_guess_format(), it should be used in place of guess_format().
62
63 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
64 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
65
66 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
67 Add av_d2str().
68
69 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
70 Add avg_frame_rate.
71
72 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
73 Introduce the av_bmg_next() function.
74
75 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
76 Add a slice_dir parameter to avfilter_draw_slice().
77
78 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
79 Remove the next field from AVFilter, this is not anymore required.
80
81 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
82 Introduce the avfilter_next() function.
83
84 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
85 Change the signature of avfilter_register() to make it return an
86 int. This is required since now the registration operation may fail.
87
88 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
89 Make the pixdesc.h API public.
90
91 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
92 Add a next field to AVFilter, this is used for simplifying the
93 registration and management of the registered filters.
94
95 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
96 Add a description field to AVFilter.
97
98 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
99 Change the interface of avfilter_make_format_list() from
100 avfilter_make_format_list(int n, ...) to
101 avfilter_make_format_list(enum PixelFormat *pix_fmts).
102
103 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
104 Make avfilter_get_video_buffer() recursive and add the w and h
105 parameters to it.
106
107 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
108 Added w and h fields to AVFilterPic.
109
110 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
111 This is now an unsigned int instead of a signed int.
112
113 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
114 Added a pts field to AVSubtitle which gives the subtitle's packet
115 PTS in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
116 not work right without this.
117
118 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
119 PKT_FLAG_KEY has been deprecated and will be dropped for the next
120 major version. Use AV_PKT_FLAG_KEY instead.
121
122 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
123 av_lockmgr_register() can be used to register a callback function
124 that lavc (and in the future, libraries that depend on lavc) can use
125 to implement mutexes. The application should provide a callback function
126 the implements the AV_LOCK_* operations described in avcodec.h.
127 When the lock manager is registered FFmpeg is guaranteed to behave
128 correct also in a multi-threaded application.
129
130 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
131 av_free_packet() is no longer an inline function. It is now exported.
132
133 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
134 Please use NULL instead. This has been supported since r16506
135 (lavf > 52.23.1, lavc > 52.10.0).
136
137 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
138 The old decoding functions are deprecated, all new code should use the
139 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
140 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
141 argument instead of a const uint8_t *buf / int buf_size pair.
142
143 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
144 Introduce the av_fifo_space() function.
145
146 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
147 Move AVPacket declaration from libavformat/avformat.h to
148 libavcodec/avcodec.h.
149
150 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
151 Make the pixel formats: PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
152 PIX_FMT_BGRA, which were defined as macros, defined as enum
153 PixelFormat values, and viceversa make PIX_FMT_RGB32,
154 PIX_FMT_RGB32_1, PIX_FMT_BGR32, PIX_FMT_BGR32_1 defined as macros.
155 Also make avcodec_get_pix_fmt() recognize the "rgb32" and "bgr32"
156 aliases.
157 Re-sort the enum PixelFormat list accordingly.
158 This change breaks API/ABI backward compatibility.
159
160 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
161 Add the enum PixelFormat values:
162 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
163 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
164
165 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
166 The Mersenne Twister PRNG implemented through the av_random* functions
167 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
168 instead.
169
170 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
171 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
172 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
173 and av_fifo_realloc2.
174 In addition, the order of the function arguments of av_fifo_generic_read
175 were changed to match av_fifo_generic_write.
176 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
177 applications, they may not use sizeof() or directly access members.
178
179 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
180 Introduce a new metadata API (see av_metadata_get() and friends).
181 The old API is now deprecated and should not be used anymore. This especially
182 includes the following structure fields:
183 - AVFormatContext.title
184 - AVFormatContext.author
185 - AVFormatContext.copyright
186 - AVFormatContext.comment
187 - AVFormatContext.album
188 - AVFormatContext.year
189 - AVFormatContext.track
190 - AVFormatContext.genre
191 - AVStream.language
192 - AVStream.filename
193 - AVProgram.provider_name
194 - AVProgram.name
195 - AVChapter.title