5ff14d9d61408d288b21ea2e952fb57b4b9c170f
[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 2010-07-03 - r24021 - lavc 52.79.0
16 Added FF_COMPLIANCE_UNOFFICIAL and changed all instances of FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL
17
18 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h
19 Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
20 lfg.h.
21
22 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()
23 Extend av_parse_color() syntax, make it accept an alpha value specifier and
24 set the alpha value to 255 by default.
25
26 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
27 Add priv_data_size and priv_data_class to URLProtocol
28
29 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()
30 Add url_alloc() and url_connect()
31
32 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2
33 Add av_register_protocol2(), deprecating av_register_protocol()
34
35 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()
36 Add av_compare_mod() to libavutil/mathematics.h.
37
38 2010-06-05 - r23485 - lavu 50.18.0 - eval API
39 Make the eval API public.
40
41 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
42 Add AV_BASE64_SIZE() macro.
43
44 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string
45 Add av_get_codec_tag_string().
46
47 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
48 Add sws_convertPalette8ToPacked32 and sws_convertPalette8ToPacked24
49
50 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
51 Add CODEC_CAP_EXPERIMENTAL flag.
52
53 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed
54 Add av_get_random_seed()
55
56 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
57 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags
58
59 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
60 Add interlaced and top_field_first fields to AVFilterPicRef.
61
62 2010-05-01 - r23002 - lavf 52.62.0 - probe function
63 Add av_probe_input_format2 to API, it allows ignoring probe
64 results below given score and returns the actual probe score.
65
66 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
67 Add a flag for av_metadata_set2() to disable overwriting of
68 existing tags.
69
70 2010-04-01 - r22753 - lavc 52.66.0
71 Add avcodec_get_edge_width()
72
73 2010-03-31 - r22750 - lavc 52.65.0
74 Add avcodec_copy_context().
75
76 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
77 Make av_match_ext() public.
78
79 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
80 Move AVMediaType enum from libavcodec to libavutil.
81
82 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
83 Define AVMediaType enum, and use it instead of enum CodecType, which
84 is deprecated and will be dropped at the next major bump.
85
86 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
87 Implement av_strerror().
88
89 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
90 Support DCT-I and DST-I
91
92 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
93 Add AVFormatContext.start_time_realtime field.
94
95 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
96 Add AVFilterPicRef.pos field.
97
98 2010-03-13 - r22501 - lavu 50.12.0 - error.h
99 Move error code definitions from libavcodec/avcodec.h to
100 the new public header libavutil/error.h.
101
102 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
103 Add public FFT interface.
104
105 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
106 Add av_stristr().
107
108 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
109 Add av_tree_enumerate().
110
111 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
112 Add av_compare_ts().
113
114 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
115 Add sws_getCoefficients().
116
117 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
118 Add a list of generic tag names, change 'author' -> 'artist',
119 'year' -> 'date'.
120
121 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
122 Add av_get_pix_fmt().
123
124 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale
125 Change constness attributes of sws_scale() parameters.
126
127 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
128 Add a log_ctx parameter to avfilter_graph_config_links().
129
130 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
131 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
132
133 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
134 Change the avfilter_add_colorspace() signature, make it accept an
135 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
136
137 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
138 Add avfilter_add_colorspace().
139
140 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
141 Add av_match_ext(), it should be used in place of match_ext().
142
143 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
144 Add av_guess_format(), it should be used in place of guess_format().
145
146 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
147 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
148
149 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
150 Add av_d2str().
151
152 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
153 Add avg_frame_rate.
154
155 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
156 Introduce the av_bmg_next() function.
157
158 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
159 Add a slice_dir parameter to avfilter_draw_slice().
160
161 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
162 Remove the next field from AVFilter, this is not anymore required.
163
164 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
165 Introduce the avfilter_next() function.
166
167 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
168 Change the signature of avfilter_register() to make it return an
169 int. This is required since now the registration operation may fail.
170
171 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
172 Make the pixdesc.h API public.
173
174 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
175 Add a next field to AVFilter, this is used for simplifying the
176 registration and management of the registered filters.
177
178 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
179 Add a description field to AVFilter.
180
181 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
182 Change the interface of avfilter_make_format_list() from
183 avfilter_make_format_list(int n, ...) to
184 avfilter_make_format_list(enum PixelFormat *pix_fmts).
185
186 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
187 Make avfilter_get_video_buffer() recursive and add the w and h
188 parameters to it.
189
190 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
191 Add w and h fields to AVFilterPic.
192
193 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
194 This is now an unsigned int instead of a signed int.
195
196 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
197 Add a pts field to AVSubtitle which gives the subtitle packet pts
198 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
199 not work right without this.
200
201 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
202 PKT_FLAG_KEY has been deprecated and will be dropped at the next
203 major version. Use AV_PKT_FLAG_KEY instead.
204
205 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
206 av_lockmgr_register() can be used to register a callback function
207 that lavc (and in the future, libraries that depend on lavc) can use
208 to implement mutexes. The application should provide a callback function
209 that implements the AV_LOCK_* operations described in avcodec.h.
210 When the lock manager is registered, FFmpeg is guaranteed to behave
211 correctly in a multi-threaded application.
212
213 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
214 av_free_packet() is no longer an inline function. It is now exported.
215
216 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
217 Please use NULL instead. This has been supported since r16506
218 (lavf > 52.23.1, lavc > 52.10.0).
219
220 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
221 The old decoding functions are deprecated, all new code should use the
222 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
223 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
224 argument instead of a const uint8_t *buf / int buf_size pair.
225
226 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
227 Introduce the av_fifo_space() function.
228
229 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
230 Move AVPacket declaration from libavformat/avformat.h to
231 libavcodec/avcodec.h.
232
233 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
234 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
235 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
236 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
237 PIX_FMT_BGR32_1 are now macros.
238 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
239 Re-sort the enum PixelFormat list accordingly.
240 This change breaks API/ABI backward compatibility.
241
242 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
243 Add the enum PixelFormat values:
244 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
245 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
246
247 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
248 The Mersenne Twister PRNG implemented through the av_random* functions
249 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
250 instead.
251
252 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
253 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
254 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
255 and av_fifo_realloc2.
256 In addition, the order of the function arguments of av_fifo_generic_read
257 was changed to match av_fifo_generic_write.
258 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
259 applications, they may not use sizeof() or directly access members.
260
261 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
262 Introduce a new metadata API (see av_metadata_get() and friends).
263 The old API is now deprecated and should not be used anymore. This especially
264 includes the following structure fields:
265 - AVFormatContext.title
266 - AVFormatContext.author
267 - AVFormatContext.copyright
268 - AVFormatContext.comment
269 - AVFormatContext.album
270 - AVFormatContext.year
271 - AVFormatContext.track
272 - AVFormatContext.genre
273 - AVStream.language
274 - AVStream.filename
275 - AVProgram.provider_name
276 - AVProgram.name
277 - AVChapter.title