Change packet_size from signed to unsigned, since it never has a negative
[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: ?
6libavfilter: ?
7libavformat: ?
8libpostproc: ?
9libswscale: ?
10libavutil: 2009-03-08
11
12
13API changes, most recent first:
14
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152009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
16 Added a pts field to AVSubtitle which gives the subtitle's packet
17 PTS in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
18 not work right without this.
19
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202009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
21 PKT_FLAG_KEY has been deprecated and will be dropped for the next
22 major version. Use AV_PKT_FLAG_KEY instead.
23
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242009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
25 av_lockmgr_register() can be used to register a callback function
26 that lavc (and in the future, libraries that depend on lavc) can use
27 to implement mutexes. The application should provide a callback function
28 the implements the AV_LOCK_* operations described in avcodec.h.
29 When the lock manager is registered FFmpeg is guaranteed to behave
30 correct also in a multi-threaded application.
31
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322009-04-30 - r18719 - lavc 52.28.0 - av_free_packet
33 av_free_packet() is no longer an inline function. It is now exported.
34
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352009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
36 Please use NULL instead. This has been supported since r16506
37 (lavf > 52.23.1, lavc > 52.10.0).
38
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392009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
40 The old decoding functions are deprecated, all new code should use the
41 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
42 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
43 argument instead of a const uint8_t *buf / int buf_size pair.
44
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452009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space
46 Introduce the av_fifo_space() function.
47
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482009-04-02 - r18317 - lavc 52.23.0 - AVPacket
49 Move AVPacket declaration from libavformat/avformat.h to
50 libavcodec/avcodec.h.
51
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522009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
53 Make the pixel formats: PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
54 PIX_FMT_BGRA, which were defined as macros, defined as enum
55 PixelFormat values, and viceversa make PIX_FMT_RGB32,
56 PIX_FMT_RGB32_1, PIX_FMT_BGR32, PIX_FMT_BGR32_1 defined as macros.
57 Also make avcodec_get_pix_fmt() recognize the "rgb32" and "bgr32"
58 aliases.
f3370e14 59 Re-sort the enum PixelFormat list accordingly.
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60 This change breaks API/ABI backward compatibility.
61
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622009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
63 Add the enum PixelFormat values:
64 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
65 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
66
b4656e6b 672009-03-21 - r18116 - lavu 50.0.0 - av_random*
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68 The Mersenne Twister PRNG implemented through the av_random* functions
69 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
70 instead.
71
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722009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
73 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
74 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
75 and av_fifo_realloc2.
76 In addition, the order of the function arguments of av_fifo_generic_read
77 were changed to match av_fifo_generic_write.
78 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
79 applications, they may not use sizeof() or directly access members.
22d4f236 80
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812009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
82 Introduce a new metadata API (see av_metadata_get() and friends).
83 The old API is now deprecated and should not be used anymore. This especially
429d6b21 84 includes the following structure fields:
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85 - AVFormatContext.title
86 - AVFormatContext.author
87 - AVFormatContext.copyright
88 - AVFormatContext.comment
89 - AVFormatContext.album
90 - AVFormatContext.year
91 - AVFormatContext.track
92 - AVFormatContext.genre
93 - AVStream.language
94 - AVStream.filename
95 - AVProgram.provider_name
96 - AVProgram.name
97 - AVChapter.title