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Code Issues Releases Wiki Activity

better? RGB/BGR spec

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12998 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
michael 2004-08-11 01:52:17 +00:00
parent 0420248c08
commit 80cd6a1b3b
1 changed files with 25 additions and 3 deletions
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28
DOCS/tech/colorspaces.txt
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@ -103,6 +103,28 @@ OpenGL's GL_RGB on all platforms, and the same goes for BGR - GL_BGR.
Unfortunately, most of the x86 codecs call our BGR to RGB, so it sometimes
confuse developers.
If you are unsure, try the OpenGL driver (-vo gl:manyfmts). There is at least
software OpenGL implementation for all major platforms and OS's, but you will
need OpenGL version >= 1.2 for most formats.
memory order: name
RGBA IMGFMT_RGBA
ARGB IMGFMT_ARGB
BGRA IMGFMT_BGRA
ABGR IMGFMT_ABGR
RGB IMGFMT_RGB24
BGR IMGFMT_BGR24
order in an int name
mostsignifant .. least significant bit
8A8R8G8B IMGFMT_BGR32
8A8B8G8R IMGFMT_RGB32
5R6G5B IMGFMT_BGR16
5B6G5R IMGFMT_RGB16
1A5R5G5B IMGFMT_BGR15
1A5B5G5R IMGFMT_RGB15
3R3G2B IMGFMT_BGR8
2B3G3R IMGFMT_RGB8
1R2G1B IMGFMT_BGR4_CHAR
1B2G1R IMGFMT_RGB4_CHAR
1R2G1B1R2G1B IMGFMT_BGR4
1B2G1R1B2G1R IMGFMT_RGB4
depending upon little vs big endian different in memory & in register formats
will be equal (LE -> BGRA == BGR32 / BE -> ARGB == BGR32)