8aba43f9b8fea64f08d191772b70848e215af896
[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 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed
16 Add av_get_random_seed()
17
18 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
19 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags
20
21 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
22 Add interlaced and top_field_first fields to AVFilterPicRef.
23
24 2010-05-01 - r23002 - lavf 52.62.0 - probe function
25 Add av_probe_input_format2 to API, it allows ignoring probe
26 results below given score and returns the actual probe score.
27
28 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
29 Add a flag for av_metadata_set2() to disable overwriting of
30 existing tags.
31
32 2010-04-01 - r22753 - lavc 52.66.0
33 Add avcodec_get_edge_width()
34
35 2010-03-31 - r22750 - lavc 52.65.0
36 Add avcodec_copy_context().
37
38 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
39 Make av_match_ext() public.
40
41 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
42 Move AVMediaType enum from libavcodec to libavutil.
43
44 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
45 Define AVMediaType enum, and use it instead of enum CodecType, which
46 is deprecated and will be dropped at the next major bump.
47
48 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
49 Implement av_strerror().
50
51 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
52 Support DCT-I and DST-I
53
54 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
55 Add AVFormatContext.start_time_realtime field.
56
57 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
58 Add AVFilterPicRef.pos field.
59
60 2010-03-13 - r22501 - lavu 50.12.0 - error.h
61 Move error code definitions from libavcodec/avcodec.h to
62 the new public header libavutil/error.h.
63
64 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
65 Add public FFT interface.
66
67 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
68 Add av_stristr().
69
70 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
71 Add av_tree_enumerate().
72
73 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
74 Add av_compare_ts().
75
76 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
77 Add sws_getCoefficients().
78
79 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
80 Add a list of generic tag names, change 'author' -> 'artist',
81 'year' -> 'date'.
82
83 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
84 Add av_get_pix_fmt().
85
86 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale
87 Change constness attributes of sws_scale() parameters.
88
89 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
90 Add a log_ctx parameter to avfilter_graph_config_links().
91
92 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
93 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
94
95 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
96 Change the avfilter_add_colorspace() signature, make it accept an
97 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
98
99 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
100 Add avfilter_add_colorspace().
101
102 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
103 Add av_match_ext(), it should be used in place of match_ext().
104
105 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
106 Add av_guess_format(), it should be used in place of guess_format().
107
108 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
109 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
110
111 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
112 Add av_d2str().
113
114 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
115 Add avg_frame_rate.
116
117 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
118 Introduce the av_bmg_next() function.
119
120 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
121 Add a slice_dir parameter to avfilter_draw_slice().
122
123 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
124 Remove the next field from AVFilter, this is not anymore required.
125
126 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
127 Introduce the avfilter_next() function.
128
129 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
130 Change the signature of avfilter_register() to make it return an
131 int. This is required since now the registration operation may fail.
132
133 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
134 Make the pixdesc.h API public.
135
136 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
137 Add a next field to AVFilter, this is used for simplifying the
138 registration and management of the registered filters.
139
140 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
141 Add a description field to AVFilter.
142
143 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
144 Change the interface of avfilter_make_format_list() from
145 avfilter_make_format_list(int n, ...) to
146 avfilter_make_format_list(enum PixelFormat *pix_fmts).
147
148 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
149 Make avfilter_get_video_buffer() recursive and add the w and h
150 parameters to it.
151
152 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
153 Add w and h fields to AVFilterPic.
154
155 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
156 This is now an unsigned int instead of a signed int.
157
158 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
159 Add a pts field to AVSubtitle which gives the subtitle packet pts
160 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
161 not work right without this.
162
163 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
164 PKT_FLAG_KEY has been deprecated and will be dropped at the next
165 major version. Use AV_PKT_FLAG_KEY instead.
166
167 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
168 av_lockmgr_register() can be used to register a callback function
169 that lavc (and in the future, libraries that depend on lavc) can use
170 to implement mutexes. The application should provide a callback function
171 that implements the AV_LOCK_* operations described in avcodec.h.
172 When the lock manager is registered, FFmpeg is guaranteed to behave
173 correctly in a multi-threaded application.
174
175 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
176 av_free_packet() is no longer an inline function. It is now exported.
177
178 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
179 Please use NULL instead. This has been supported since r16506
180 (lavf > 52.23.1, lavc > 52.10.0).
181
182 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
183 The old decoding functions are deprecated, all new code should use the
184 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
185 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
186 argument instead of a const uint8_t *buf / int buf_size pair.
187
188 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
189 Introduce the av_fifo_space() function.
190
191 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
192 Move AVPacket declaration from libavformat/avformat.h to
193 libavcodec/avcodec.h.
194
195 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
196 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
197 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
198 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
199 PIX_FMT_BGR32_1 are now macros.
200 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
201 Re-sort the enum PixelFormat list accordingly.
202 This change breaks API/ABI backward compatibility.
203
204 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
205 Add the enum PixelFormat values:
206 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
207 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
208
209 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
210 The Mersenne Twister PRNG implemented through the av_random* functions
211 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
212 instead.
213
214 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
215 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
216 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
217 and av_fifo_realloc2.
218 In addition, the order of the function arguments of av_fifo_generic_read
219 was changed to match av_fifo_generic_write.
220 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
221 applications, they may not use sizeof() or directly access members.
222
223 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
224 Introduce a new metadata API (see av_metadata_get() and friends).
225 The old API is now deprecated and should not be used anymore. This especially
226 includes the following structure fields:
227 - AVFormatContext.title
228 - AVFormatContext.author
229 - AVFormatContext.copyright
230 - AVFormatContext.comment
231 - AVFormatContext.album
232 - AVFormatContext.year
233 - AVFormatContext.track
234 - AVFormatContext.genre
235 - AVStream.language
236 - AVStream.filename
237 - AVProgram.provider_name
238 - AVProgram.name
239 - AVChapter.title