#ifndef Py_YUV_H | |
#define Py_YUV_H | |
#ifdef __cplusplus | |
extern "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 */ |