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outflags described

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7399 b3059339-0415-0410-9bf9-f77b7e298cf2
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arpi 2002-09-15 01:39:42 +00:00
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32
DOCS/tech/codecs.conf.txt
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@ -99,8 +99,38 @@ The "out" keyword identifies which output format that the decoder is known
to output. Just like the fourcc line, there can be multiple out lines or
multiple comma-separated output formats on the same line. The output
formats should be listed in order of preference.
The outfmt values can be followed by one or more flags, like flip, noflip,
static, querty. TODO: describe tehse in detail.
static, query. Describe these in detail:
"flip":
If this flag is set for a given format, then o_bih->biHeight will NOT be
set to -bih->biHeight, ie image will be decoded upside-down.
Used only by vfw and vfwex codecs.
"noflip":
This flag is ignored (no effect) without "flip" being set!
If this flag is set, it means the codec doesn't decode upside-down,
altought it's told to do so.
"yuvhack":
This flag is required for the old win32 ms-mpeg4 vfw codecs, including
MP42 and DIV3 (divx 3.11). These DLLs actually support YUV formats,
but the query/begin functions are buggy and don't accept YUV fourccs
(the decode func. accepts it and works well!)
If this flag is set, then o_bih->biCompression will be set to 0 for
the initialization for the YUV modes. Used only by vfw/vfwex codecs.
"query":
This flag is used to control VDCTRL_QUERY_FORMAT for vfw/vfewx codecs.
If thsi flag is set, the control() will query the codec for the csp
support, otherwise it will assume constant csp table. Required for
some DLLs (like huffyuv, CRAM).
"static",
This flag forces STATIC (instead of TEMP) buffer allocation for the codec.
Used for some very old DLLs like Indeo 3 and for some xanim codecs like
cinepak. See dr-methods.txt for details on buffer types.
Audio Codecs
------------