Add a description field to AVFilterContext.
[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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152009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
16 Change the interface of avfilter_make_format_list() from
17 avfilter_make_format_list(int n, ...) to
18 avfilter_make_format_list(enum PixelFormat *pix_fmts).
19
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202009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
21 Make avfilter_get_video_buffer() recursive and add the w and h
22 parameters to it.
23
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242009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
25 Added w and h fields to AVFilterPic.
26
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272009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
28 This is now an unsigned int instead of a signed int.
29
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302009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
31 Added a pts field to AVSubtitle which gives the subtitle's packet
32 PTS in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
33 not work right without this.
34
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352009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
36 PKT_FLAG_KEY has been deprecated and will be dropped for the next
37 major version. Use AV_PKT_FLAG_KEY instead.
38
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392009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
40 av_lockmgr_register() can be used to register a callback function
41 that lavc (and in the future, libraries that depend on lavc) can use
42 to implement mutexes. The application should provide a callback function
43 the implements the AV_LOCK_* operations described in avcodec.h.
44 When the lock manager is registered FFmpeg is guaranteed to behave
45 correct also in a multi-threaded application.
46
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472009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
48 av_free_packet() is no longer an inline function. It is now exported.
49
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502009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
51 Please use NULL instead. This has been supported since r16506
52 (lavf > 52.23.1, lavc > 52.10.0).
53
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542009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
55 The old decoding functions are deprecated, all new code should use the
56 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
57 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
58 argument instead of a const uint8_t *buf / int buf_size pair.
59
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602009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
61 Introduce the av_fifo_space() function.
62
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632009-04-02 - r18317 - lavc 52.23.0 - AVPacket
64 Move AVPacket declaration from libavformat/avformat.h to
65 libavcodec/avcodec.h.
66
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672009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
68 Make the pixel formats: PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
69 PIX_FMT_BGRA, which were defined as macros, defined as enum
70 PixelFormat values, and viceversa make PIX_FMT_RGB32,
71 PIX_FMT_RGB32_1, PIX_FMT_BGR32, PIX_FMT_BGR32_1 defined as macros.
72 Also make avcodec_get_pix_fmt() recognize the "rgb32" and "bgr32"
73 aliases.
f3370e14 74 Re-sort the enum PixelFormat list accordingly.
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75 This change breaks API/ABI backward compatibility.
76
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772009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
78 Add the enum PixelFormat values:
79 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
80 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
81
b4656e6b 822009-03-21 - r18116 - lavu 50.0.0 - av_random*
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83 The Mersenne Twister PRNG implemented through the av_random* functions
84 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
85 instead.
86
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872009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
88 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
89 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
90 and av_fifo_realloc2.
91 In addition, the order of the function arguments of av_fifo_generic_read
92 were changed to match av_fifo_generic_write.
93 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
94 applications, they may not use sizeof() or directly access members.
22d4f236 95
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962009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
97 Introduce a new metadata API (see av_metadata_get() and friends).
98 The old API is now deprecated and should not be used anymore. This especially
429d6b21 99 includes the following structure fields:
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100 - AVFormatContext.title
101 - AVFormatContext.author
102 - AVFormatContext.copyright
103 - AVFormatContext.comment
104 - AVFormatContext.album
105 - AVFormatContext.year
106 - AVFormatContext.track
107 - AVFormatContext.genre
108 - AVStream.language
109 - AVStream.filename
110 - AVProgram.provider_name
111 - AVProgram.name
112 - AVChapter.title