1 2 #ifndef Py_YUV_H 3 #define Py_YUV_H 4 #ifdef __cplusplus 5 extern "C" { 6 #endif 7 8 /* 9 * SVideo YUV 4:1:1 format. 10 * 11 * 4 consecutive quadwords describe 8 pixels on 2 lines, as depicted 12 * below. An array of (width/4) of the below structure describes 2 13 * scan lines. 14 * 15 * +-------------------+ 16 * | 00 | 01 | 02 | 03 | . . . 17 * +-------------------+ 18 * | 10 | 11 | 12 | 13 | . . . 19 * +-------------------+ 20 */ 21 struct yuv411 { 22 struct { 23 unsigned int dummy:8; 24 unsigned int y0:8; 25 unsigned int u0:2; 26 unsigned int v0:2; 27 unsigned int y1:8; 28 unsigned int u1:2; 29 unsigned int v1:2; 30 } v[4]; 31 }; 32 33 #define YUV411_Y00(y) (y).v[0].y0 34 #define YUV411_Y01(y) (y).v[1].y0 35 #define YUV411_Y02(y) (y).v[2].y0 36 #define YUV411_Y03(y) (y).v[3].y0 37 #define YUV411_Y10(y) (y).v[0].y1 38 #define YUV411_Y11(y) (y).v[1].y1 39 #define YUV411_Y12(y) (y).v[2].y1 40 #define YUV411_Y13(y) (y).v[3].y1 41 #define YUV411_U00(y) ((y).v[0].u0<<6|(y).v[1].u0<<4|(y).v[2].u0<<2|(y).v[3].u0) 42 #define YUV411_U01(y) YUV411_U00(y) 43 #define YUV411_U02(y) YUV411_U00(y) 44 #define YUV411_U03(y) YUV411_U00(y) 45 #define YUV411_U10(y) ((y).v[0].u1<<6|(y).v[1].u1<<4|(y).v[2].u1<<2|(y).v[3].u1) 46 #define YUV411_U11(y) YUV411_U10(y) 47 #define YUV411_U12(y) YUV411_U10(y) 48 #define YUV411_U13(y) YUV411_U10(y) 49 #define YUV411_V00(y) ((y).v[0].v0<<6|(y).v[1].v0<<4|(y).v[2].v0<<2|(y).v[3].v0) 50 #define YUV411_V01(y) YUV411_V00(y) 51 #define YUV411_V02(y) YUV411_V00(y) 52 #define YUV411_V03(y) YUV411_V00(y) 53 #define YUV411_V10(y) ((y).v[0].v1<<6|(y).v[1].v1<<4|(y).v[2].v1<<2|(y).v[3].v1) 54 #define YUV411_V11(y) YUV411_V10(y) 55 #define YUV411_V12(y) YUV411_V10(y) 56 #define YUV411_V13(y) YUV411_V10(y) 57 58 /* 59 * Compression Library YUV 4:2:2 format. 60 * 61 * 1 longword describes 2 pixels. 62 * 63 * +-------+ 64 * | 0 | 1 | 65 * +-------+ 66 */ 67 struct yuv422 { 68 unsigned int u:8; 69 unsigned int y0:8; 70 unsigned int v:8; 71 unsigned int y1:8; 72 }; 73 #define YUV422_Y0(y) (y).y0 74 #define YUV422_Y1(y) (y).y1 75 #define YUV422_U0(y) (y).u 76 #define YUV422_U1(y) (y).u 77 #define YUV422_V0(y) (y).v 78 #define YUV422_V1(y) (y).v 79 80 /* 81 * Compression library YUV 4:2:2 Duplicate Chroma format. 82 * 83 * This is like the previous format, but the U and V values are 84 * duplicated vertically (and hence there is some redundancy in the 85 * data). With other words, lines 2*n and 2*n+1 have the same U and V 86 * values but different Y values. 87 */ 88 89 /* 90 * Conversion functions. 91 */ 92 void yuv_sv411_to_cl422dc(int, void *, void *, int, int); 93 void yuv_sv411_to_cl422dc_quartersize(int, void *, void *, int, int); 94 void yuv_sv411_to_cl422dc_sixteenthsize(int, void *, void *, int, int); 95 96 #ifdef __cplusplus 97 } 98 #endif 99 #endif /* !Py_YUV_H */ 100