c60128f9461ca27fe0f0416460f523086a293f5e
[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 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
16 Add AV_BASE64_SIZE() macro.
17
18 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string
19 Add av_get_codec_tag_string().
20
21 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
22 Add sws_convertPalette8ToPacked32 and sws_convertPalette8ToPacked24
23
24 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
25 Add CODEC_CAP_EXPERIMENTAL flag.
26
27 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed
28 Add av_get_random_seed()
29
30 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
31 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags
32
33 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
34 Add interlaced and top_field_first fields to AVFilterPicRef.
35
36 2010-05-01 - r23002 - lavf 52.62.0 - probe function
37 Add av_probe_input_format2 to API, it allows ignoring probe
38 results below given score and returns the actual probe score.
39
40 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
41 Add a flag for av_metadata_set2() to disable overwriting of
42 existing tags.
43
44 2010-04-01 - r22753 - lavc 52.66.0
45 Add avcodec_get_edge_width()
46
47 2010-03-31 - r22750 - lavc 52.65.0
48 Add avcodec_copy_context().
49
50 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
51 Make av_match_ext() public.
52
53 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
54 Move AVMediaType enum from libavcodec to libavutil.
55
56 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
57 Define AVMediaType enum, and use it instead of enum CodecType, which
58 is deprecated and will be dropped at the next major bump.
59
60 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
61 Implement av_strerror().
62
63 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
64 Support DCT-I and DST-I
65
66 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
67 Add AVFormatContext.start_time_realtime field.
68
69 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
70 Add AVFilterPicRef.pos field.
71
72 2010-03-13 - r22501 - lavu 50.12.0 - error.h
73 Move error code definitions from libavcodec/avcodec.h to
74 the new public header libavutil/error.h.
75
76 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
77 Add public FFT interface.
78
79 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
80 Add av_stristr().
81
82 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
83 Add av_tree_enumerate().
84
85 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
86 Add av_compare_ts().
87
88 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
89 Add sws_getCoefficients().
90
91 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
92 Add a list of generic tag names, change 'author' -> 'artist',
93 'year' -> 'date'.
94
95 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
96 Add av_get_pix_fmt().
97
98 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale
99 Change constness attributes of sws_scale() parameters.
100
101 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
102 Add a log_ctx parameter to avfilter_graph_config_links().
103
104 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put
105 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
106
107 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
108 Change the avfilter_add_colorspace() signature, make it accept an
109 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
110
111 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
112 Add avfilter_add_colorspace().
113
114 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
115 Add av_match_ext(), it should be used in place of match_ext().
116
117 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
118 Add av_guess_format(), it should be used in place of guess_format().
119
120 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
121 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and AV_METADATA_DONT_STRDUP_VAL.
122
123 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
124 Add av_d2str().
125
126 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
127 Add avg_frame_rate.
128
129 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
130 Introduce the av_bmg_next() function.
131
132 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
133 Add a slice_dir parameter to avfilter_draw_slice().
134
135 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
136 Remove the next field from AVFilter, this is not anymore required.
137
138 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
139 Introduce the avfilter_next() function.
140
141 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
142 Change the signature of avfilter_register() to make it return an
143 int. This is required since now the registration operation may fail.
144
145 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
146 Make the pixdesc.h API public.
147
148 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
149 Add a next field to AVFilter, this is used for simplifying the
150 registration and management of the registered filters.
151
152 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
153 Add a description field to AVFilter.
154
155 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
156 Change the interface of avfilter_make_format_list() from
157 avfilter_make_format_list(int n, ...) to
158 avfilter_make_format_list(enum PixelFormat *pix_fmts).
159
160 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
161 Make avfilter_get_video_buffer() recursive and add the w and h
162 parameters to it.
163
164 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
165 Add w and h fields to AVFilterPic.
166
167 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
168 This is now an unsigned int instead of a signed int.
169
170 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
171 Add a pts field to AVSubtitle which gives the subtitle packet pts
172 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
173 not work right without this.
174
175 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
176 PKT_FLAG_KEY has been deprecated and will be dropped at the next
177 major version. Use AV_PKT_FLAG_KEY instead.
178
179 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
180 av_lockmgr_register() can be used to register a callback function
181 that lavc (and in the future, libraries that depend on lavc) can use
182 to implement mutexes. The application should provide a callback function
183 that implements the AV_LOCK_* operations described in avcodec.h.
184 When the lock manager is registered, FFmpeg is guaranteed to behave
185 correctly in a multi-threaded application.
186
187 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
188 av_free_packet() is no longer an inline function. It is now exported.
189
190 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
191 Please use NULL instead. This has been supported since r16506
192 (lavf > 52.23.1, lavc > 52.10.0).
193
194 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
195 The old decoding functions are deprecated, all new code should use the
196 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
197 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
198 argument instead of a const uint8_t *buf / int buf_size pair.
199
200 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
201 Introduce the av_fifo_space() function.
202
203 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
204 Move AVPacket declaration from libavformat/avformat.h to
205 libavcodec/avcodec.h.
206
207 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
208 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
209 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
210 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
211 PIX_FMT_BGR32_1 are now macros.
212 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
213 Re-sort the enum PixelFormat list accordingly.
214 This change breaks API/ABI backward compatibility.
215
216 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
217 Add the enum PixelFormat values:
218 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
219 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
220
221 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
222 The Mersenne Twister PRNG implemented through the av_random* functions
223 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
224 instead.
225
226 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
227 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
228 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
229 and av_fifo_realloc2.
230 In addition, the order of the function arguments of av_fifo_generic_read
231 was changed to match av_fifo_generic_write.
232 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
233 applications, they may not use sizeof() or directly access members.
234
235 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
236 Introduce a new metadata API (see av_metadata_get() and friends).
237 The old API is now deprecated and should not be used anymore. This especially
238 includes the following structure fields:
239 - AVFormatContext.title
240 - AVFormatContext.author
241 - AVFormatContext.copyright
242 - AVFormatContext.comment
243 - AVFormatContext.album
244 - AVFormatContext.year
245 - AVFormatContext.track
246 - AVFormatContext.genre
247 - AVStream.language
248 - AVStream.filename
249 - AVProgram.provider_name
250 - AVProgram.name
251 - AVChapter.title