Implement a new registration system for filters.
[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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152009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
16 Make the pixdesc.h API public.
17
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182009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
19 Add a next field to AVFilter, this is used for simplifying the
20 registration and management of the registered filters.
21
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222009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
23 Add a description field to AVFilter.
01537e9f 24
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252009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
26 Change the interface of avfilter_make_format_list() from
27 avfilter_make_format_list(int n, ...) to
28 avfilter_make_format_list(enum PixelFormat *pix_fmts).
29
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302009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
31 Make avfilter_get_video_buffer() recursive and add the w and h
32 parameters to it.
33
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342009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
35 Added w and h fields to AVFilterPic.
36
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372009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
38 This is now an unsigned int instead of a signed int.
39
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402009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
41 Added a pts field to AVSubtitle which gives the subtitle's packet
42 PTS in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
43 not work right without this.
44
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452009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
46 PKT_FLAG_KEY has been deprecated and will be dropped for the next
47 major version. Use AV_PKT_FLAG_KEY instead.
48
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492009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
50 av_lockmgr_register() can be used to register a callback function
51 that lavc (and in the future, libraries that depend on lavc) can use
52 to implement mutexes. The application should provide a callback function
53 the implements the AV_LOCK_* operations described in avcodec.h.
54 When the lock manager is registered FFmpeg is guaranteed to behave
55 correct also in a multi-threaded application.
56
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572009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
58 av_free_packet() is no longer an inline function. It is now exported.
59
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602009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
61 Please use NULL instead. This has been supported since r16506
62 (lavf > 52.23.1, lavc > 52.10.0).
63
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642009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
65 The old decoding functions are deprecated, all new code should use the
66 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
67 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
68 argument instead of a const uint8_t *buf / int buf_size pair.
69
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702009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
71 Introduce the av_fifo_space() function.
72
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732009-04-02 - r18317 - lavc 52.23.0 - AVPacket
74 Move AVPacket declaration from libavformat/avformat.h to
75 libavcodec/avcodec.h.
76
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772009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
78 Make the pixel formats: PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
79 PIX_FMT_BGRA, which were defined as macros, defined as enum
80 PixelFormat values, and viceversa make PIX_FMT_RGB32,
81 PIX_FMT_RGB32_1, PIX_FMT_BGR32, PIX_FMT_BGR32_1 defined as macros.
82 Also make avcodec_get_pix_fmt() recognize the "rgb32" and "bgr32"
83 aliases.
f3370e14 84 Re-sort the enum PixelFormat list accordingly.
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85 This change breaks API/ABI backward compatibility.
86
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872009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
88 Add the enum PixelFormat values:
89 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
90 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
91
b4656e6b 922009-03-21 - r18116 - lavu 50.0.0 - av_random*
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93 The Mersenne Twister PRNG implemented through the av_random* functions
94 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
95 instead.
96
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972009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
98 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
99 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
100 and av_fifo_realloc2.
101 In addition, the order of the function arguments of av_fifo_generic_read
102 were changed to match av_fifo_generic_write.
103 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
104 applications, they may not use sizeof() or directly access members.
22d4f236 105
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1062009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
107 Introduce a new metadata API (see av_metadata_get() and friends).
108 The old API is now deprecated and should not be used anymore. This especially
429d6b21 109 includes the following structure fields:
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110 - AVFormatContext.title
111 - AVFormatContext.author
112 - AVFormatContext.copyright
113 - AVFormatContext.comment
114 - AVFormatContext.album
115 - AVFormatContext.year
116 - AVFormatContext.track
117 - AVFormatContext.genre
118 - AVStream.language
119 - AVStream.filename
120 - AVProgram.provider_name
121 - AVProgram.name
122 - AVChapter.title