| Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1 | |
| Sjoerd Mullender | 6b517fd | 1993-03-16 12:25:30 +0000 | [diff] [blame] | 2 | #include "yuv.h" |
| 3 | |
| 4 | void |
| 5 | yuv_sv411_to_cl422dc(int invert, void *data, void *yuv, int width, int height) |
| 6 | { |
| 7 | struct yuv411 *in = data; |
| 8 | struct yuv422 *out_even = yuv; |
| 9 | struct yuv422 *out_odd = out_even + width / 2; |
| 10 | int i, j; /* counters */ |
| 11 | |
| 12 | for (i = height / 2; i--; ) { |
| 13 | for (j = width / 4; j--; ) { |
| 14 | YUV422_Y0(*out_even) = YUV411_Y00(*in); |
| 15 | YUV422_U0(*out_even) = YUV411_U00(*in); |
| 16 | YUV422_V0(*out_even) = YUV411_V00(*in); |
| 17 | YUV422_Y1(*out_even) = YUV411_Y01(*in); |
| 18 | out_even++; |
| 19 | YUV422_Y0(*out_even) = YUV411_Y02(*in); |
| 20 | YUV422_U0(*out_even) = YUV411_U02(*in); |
| 21 | YUV422_V0(*out_even) = YUV411_V02(*in); |
| 22 | YUV422_Y1(*out_even) = YUV411_Y03(*in); |
| 23 | out_even++; |
| 24 | YUV422_Y0(*out_odd) = YUV411_Y10(*in); |
| 25 | YUV422_U0(*out_odd) = YUV411_U10(*in); |
| 26 | YUV422_V0(*out_odd) = YUV411_V10(*in); |
| 27 | YUV422_Y1(*out_odd) = YUV411_Y11(*in); |
| 28 | out_odd++; |
| 29 | YUV422_Y0(*out_odd) = YUV411_Y12(*in); |
| 30 | YUV422_U0(*out_odd) = YUV411_U12(*in); |
| 31 | YUV422_V0(*out_odd) = YUV411_V12(*in); |
| 32 | YUV422_Y1(*out_odd) = YUV411_Y13(*in); |
| 33 | out_odd++; |
| 34 | in++; |
| 35 | } |
| 36 | out_even += width / 2; |
| 37 | out_odd += width / 2; |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | void |
| 42 | yuv_sv411_to_cl422dc_quartersize(int invert, void *data, void *yuv, |
| 43 | int width, int height) |
| 44 | { |
| 45 | int w4 = width / 4; /* quarter of width is used often */ |
| 46 | struct yuv411 *in_even = data; |
| 47 | struct yuv411 *in_odd = in_even + w4; |
| 48 | struct yuv422 *out_even = yuv; |
| 49 | struct yuv422 *out_odd = out_even + w4; |
| 50 | int i, j; /* counters */ |
| 51 | int u, v; /* U and V values */ |
| 52 | |
| 53 | for (i = height / 4; i--; ) { |
| 54 | for (j = w4; j--; ) { |
| 55 | u = YUV411_U00(*in_even); |
| 56 | v = YUV411_V00(*in_even); |
| 57 | |
| 58 | YUV422_Y0(*out_even) = YUV411_Y00(*in_even); |
| 59 | YUV422_U0(*out_even) = u; |
| 60 | YUV422_V0(*out_even) = v; |
| 61 | YUV422_Y1(*out_even) = YUV411_Y02(*in_even); |
| 62 | |
| 63 | YUV422_Y0(*out_odd) = YUV411_Y10(*in_odd); |
| 64 | YUV422_U0(*out_odd) = u; |
| 65 | YUV422_V0(*out_odd) = v; |
| 66 | YUV422_Y1(*out_odd) = YUV411_Y12(*in_odd); |
| 67 | |
| 68 | in_even++; |
| 69 | in_odd++; |
| 70 | out_even++; |
| 71 | out_odd++; |
| 72 | } |
| 73 | in_even += w4; |
| 74 | in_odd += w4; |
| 75 | out_even += w4; |
| 76 | out_odd += w4; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | void |
| 81 | yuv_sv411_to_cl422dc_sixteenthsize(int invert, void *data, void *yuv, |
| 82 | int width, int height) |
| 83 | { |
| 84 | int w4_3 = 3 * width / 4; /* three quarters of width is used often */ |
| 85 | int w8 = width / 8; /* and so is one eighth */ |
| 86 | struct yuv411 *in_even = data; |
| 87 | struct yuv411 *in_odd = in_even + width / 2; |
| 88 | struct yuv422 *out_even = yuv; |
| 89 | struct yuv422 *out_odd = out_even + w8; |
| 90 | int i, j; /* counters */ |
| 91 | int u, v; /* U and V values */ |
| 92 | |
| 93 | for (i = height / 8; i--; ) { |
| 94 | for (j = w8; j--; ) { |
| 95 | u = YUV411_U00(in_even[0]); |
| 96 | v = YUV411_V00(in_even[0]); |
| 97 | |
| 98 | YUV422_Y0(*out_even) = YUV411_Y00(in_even[0]); |
| 99 | YUV422_U0(*out_even) = u; |
| 100 | YUV422_V0(*out_even) = v; |
| 101 | YUV422_Y1(*out_even) = YUV411_Y00(in_even[1]); |
| 102 | |
| 103 | YUV422_Y0(*out_odd) = YUV411_Y00(in_odd[0]); |
| 104 | YUV422_U0(*out_odd) = u; |
| 105 | YUV422_V0(*out_odd) = v; |
| 106 | YUV422_Y1(*out_odd) = YUV411_Y00(in_even[1]); |
| 107 | |
| 108 | in_even += 2; |
| 109 | in_odd += 2; |
| 110 | out_even++; |
| 111 | out_odd++; |
| 112 | } |
| 113 | in_even += w4_3; |
| 114 | in_odd += w4_3; |
| 115 | out_even += w8; |
| 116 | out_odd += w8; |
| 117 | } |
| 118 | } |