symbian-qemu-0.9.1-12/python-2.6.1/Modules/yuv.h
author martin.trojer@nokia.com
Mon, 10 Aug 2009 09:51:31 +0100
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parent 1 2fb8b9db1c86
permissions -rw-r--r--
Documentation updates
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#ifndef Py_YUV_H
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#define Py_YUV_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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 * SVideo YUV 4:1:1 format.
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 *
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 * 4 consecutive quadwords describe 8 pixels on 2 lines, as depicted
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 * below.  An array of (width/4) of the below structure describes 2
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 * scan lines.
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 *
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 * +-------------------+
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 * | 00 | 01 | 02 | 03 | . . .
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 * +-------------------+
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 * | 10 | 11 | 12 | 13 | . . .
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 * +-------------------+
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 */
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struct yuv411 {
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	struct {
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		unsigned int dummy:8;
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		unsigned int y0:8;
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		unsigned int u0:2;
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		unsigned int v0:2;
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		unsigned int y1:8;
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		unsigned int u1:2;
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		unsigned int v1:2;
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	} v[4];
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};
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#define YUV411_Y00(y)	(y).v[0].y0
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#define YUV411_Y01(y)	(y).v[1].y0
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#define YUV411_Y02(y)	(y).v[2].y0
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#define YUV411_Y03(y)	(y).v[3].y0
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#define YUV411_Y10(y)	(y).v[0].y1
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#define YUV411_Y11(y)	(y).v[1].y1
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#define YUV411_Y12(y)	(y).v[2].y1
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#define YUV411_Y13(y)	(y).v[3].y1
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#define YUV411_U00(y)	((y).v[0].u0<<6|(y).v[1].u0<<4|(y).v[2].u0<<2|(y).v[3].u0)
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#define YUV411_U01(y)	YUV411_U00(y)
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#define YUV411_U02(y)	YUV411_U00(y)
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#define YUV411_U03(y)	YUV411_U00(y)
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#define YUV411_U10(y)	((y).v[0].u1<<6|(y).v[1].u1<<4|(y).v[2].u1<<2|(y).v[3].u1)
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#define YUV411_U11(y)	YUV411_U10(y)
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#define YUV411_U12(y)	YUV411_U10(y)
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#define YUV411_U13(y)	YUV411_U10(y)
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#define YUV411_V00(y)	((y).v[0].v0<<6|(y).v[1].v0<<4|(y).v[2].v0<<2|(y).v[3].v0)
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#define YUV411_V01(y)	YUV411_V00(y)
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#define YUV411_V02(y)	YUV411_V00(y)
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#define YUV411_V03(y)	YUV411_V00(y)
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#define YUV411_V10(y)	((y).v[0].v1<<6|(y).v[1].v1<<4|(y).v[2].v1<<2|(y).v[3].v1)
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#define YUV411_V11(y)	YUV411_V10(y)
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#define YUV411_V12(y)	YUV411_V10(y)
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#define YUV411_V13(y)	YUV411_V10(y)
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/*
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 * Compression Library YUV 4:2:2 format.
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 *
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 * 1 longword describes 2 pixels.
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 *
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 * +-------+
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 * | 0 | 1 |
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 * +-------+
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 */
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struct yuv422 {
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	unsigned int u:8;
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	unsigned int y0:8;
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	unsigned int v:8;
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	unsigned int y1:8;
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};
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#define YUV422_Y0(y)	(y).y0
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#define YUV422_Y1(y)	(y).y1
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#define YUV422_U0(y)	(y).u
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#define YUV422_U1(y)	(y).u
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#define YUV422_V0(y)	(y).v
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#define YUV422_V1(y)	(y).v
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/*
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 * Compression library YUV 4:2:2 Duplicate Chroma format.
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 *
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 * This is like the previous format, but the U and V values are
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 * duplicated vertically (and hence there is some redundancy in the
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 * data).  With other words, lines 2*n and 2*n+1 have the same U and V
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 * values but different Y values.
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 */
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/*
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 * Conversion functions.
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 */
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void yuv_sv411_to_cl422dc(int, void *, void *, int, int);
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void yuv_sv411_to_cl422dc_quartersize(int, void *, void *, int, int);
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void yuv_sv411_to_cl422dc_sixteenthsize(int, void *, void *, int, int);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_YUV_H */