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