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