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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1891 | serge | 1 | /* WARNING: This file is generated by combine.pl from combine.inc. |
| 2 | Please edit one of those files rather than this one. */ |
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| 3 | |||
| 4 | #line 1 "pixman-combine.c.template" |
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| 5 | |||
| 6 | #define COMPONENT_SIZE 8 |
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| 7 | #define MASK 0xff |
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| 8 | #define ONE_HALF 0x80 |
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| 9 | |||
| 10 | #define A_SHIFT 8 * 3 |
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| 11 | #define R_SHIFT 8 * 2 |
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| 12 | #define G_SHIFT 8 |
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| 13 | #define A_MASK 0xff000000 |
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| 14 | #define R_MASK 0xff0000 |
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| 15 | #define G_MASK 0xff00 |
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| 16 | |||
| 17 | #define RB_MASK 0xff00ff |
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| 18 | #define AG_MASK 0xff00ff00 |
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| 19 | #define RB_ONE_HALF 0x800080 |
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| 20 | #define RB_MASK_PLUS_ONE 0x10000100 |
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| 21 | |||
| 22 | #define ALPHA_8(x) ((x) >> A_SHIFT) |
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| 23 | #define RED_8(x) (((x) >> R_SHIFT) & MASK) |
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| 24 | #define GREEN_8(x) (((x) >> G_SHIFT) & MASK) |
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| 25 | #define BLUE_8(x) ((x) & MASK) |
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| 26 | |||
| 27 | /* |
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| 28 | * Helper macros. |
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| 29 | */ |
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| 30 | |||
| 31 | #define MUL_UN8(a, b, t) \ |
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| 32 | ((t) = (a) * (b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT )) |
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| 33 | |||
| 34 | #define DIV_UN8(a, b) \ |
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| 35 | (((uint16_t) (a) * MASK) / (b)) |
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| 36 | |||
| 37 | #define ADD_UN8(x, y, t) \ |
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| 38 | ((t) = (x) + (y), \ |
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| 39 | (uint32_t) (uint8_t) ((t) | (0 - ((t) >> G_SHIFT)))) |
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| 40 | |||
| 41 | #define DIV_ONE_UN8(x) \ |
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| 42 | (((x) + ONE_HALF + (((x) + ONE_HALF) >> G_SHIFT)) >> G_SHIFT) |
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| 43 | |||
| 44 | /* |
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| 45 | * The methods below use some tricks to be able to do two color |
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| 46 | * components at the same time. |
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| 47 | */ |
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| 48 | |||
| 49 | /* |
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| 50 | * x_rb = (x_rb * a) / 255 |
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| 51 | */ |
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| 52 | #define UN8_rb_MUL_UN8(x, a, t) \ |
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| 53 | do \ |
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| 54 | { \ |
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| 55 | t = ((x) & RB_MASK) * (a); \ |
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| 56 | t += RB_ONE_HALF; \ |
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| 57 | x = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \ |
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| 58 | x &= RB_MASK; \ |
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| 59 | } while (0) |
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| 60 | |||
| 61 | /* |
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| 62 | * x_rb = min (x_rb + y_rb, 255) |
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| 63 | */ |
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| 64 | #define UN8_rb_ADD_UN8_rb(x, y, t) \ |
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| 65 | do \ |
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| 66 | { \ |
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| 67 | t = ((x) + (y)); \ |
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| 68 | t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK); \ |
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| 69 | x = (t & RB_MASK); \ |
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| 70 | } while (0) |
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| 71 | |||
| 72 | /* |
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| 73 | * x_rb = (x_rb * a_rb) / 255 |
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| 74 | */ |
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| 75 | #define UN8_rb_MUL_UN8_rb(x, a, t) \ |
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| 76 | do \ |
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| 77 | { \ |
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| 78 | t = (x & MASK) * (a & MASK); \ |
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| 79 | t |= (x & R_MASK) * ((a >> R_SHIFT) & MASK); \ |
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| 80 | t += RB_ONE_HALF; \ |
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| 81 | t = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \ |
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| 82 | x = t & RB_MASK; \ |
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| 83 | } while (0) |
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| 84 | |||
| 85 | /* |
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| 86 | * x_c = (x_c * a) / 255 |
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| 87 | */ |
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| 88 | #define UN8x4_MUL_UN8(x, a) \ |
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| 89 | do \ |
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| 90 | { \ |
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| 91 | uint32_t r1__, r2__, t__; \ |
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| 92 | \ |
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| 93 | r1__ = (x); \ |
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| 94 | UN8_rb_MUL_UN8 (r1__, (a), t__); \ |
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| 95 | \ |
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| 96 | r2__ = (x) >> G_SHIFT; \ |
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| 97 | UN8_rb_MUL_UN8 (r2__, (a), t__); \ |
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| 98 | \ |
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| 99 | (x) = r1__ | (r2__ << G_SHIFT); \ |
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| 100 | } while (0) |
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| 101 | |||
| 102 | /* |
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| 103 | * x_c = (x_c * a) / 255 + y_c |
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| 104 | */ |
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| 105 | #define UN8x4_MUL_UN8_ADD_UN8x4(x, a, y) \ |
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| 106 | do \ |
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| 107 | { \ |
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| 108 | uint32_t r1__, r2__, r3__, t__; \ |
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| 109 | \ |
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| 110 | r1__ = (x); \ |
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| 111 | r2__ = (y) & RB_MASK; \ |
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| 112 | UN8_rb_MUL_UN8 (r1__, (a), t__); \ |
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| 113 | UN8_rb_ADD_UN8_rb (r1__, r2__, t__); \ |
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| 114 | \ |
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| 115 | r2__ = (x) >> G_SHIFT; \ |
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| 116 | r3__ = ((y) >> G_SHIFT) & RB_MASK; \ |
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| 117 | UN8_rb_MUL_UN8 (r2__, (a), t__); \ |
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| 118 | UN8_rb_ADD_UN8_rb (r2__, r3__, t__); \ |
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| 119 | \ |
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| 120 | (x) = r1__ | (r2__ << G_SHIFT); \ |
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| 121 | } while (0) |
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| 122 | |||
| 123 | /* |
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| 124 | * x_c = (x_c * a + y_c * b) / 255 |
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| 125 | */ |
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| 126 | #define UN8x4_MUL_UN8_ADD_UN8x4_MUL_UN8(x, a, y, b) \ |
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| 127 | do \ |
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| 128 | { \ |
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| 129 | uint32_t r1__, r2__, r3__, t__; \ |
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| 130 | \ |
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| 131 | r1__ = (x); \ |
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| 132 | r2__ = (y); \ |
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| 133 | UN8_rb_MUL_UN8 (r1__, (a), t__); \ |
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| 134 | UN8_rb_MUL_UN8 (r2__, (b), t__); \ |
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| 135 | UN8_rb_ADD_UN8_rb (r1__, r2__, t__); \ |
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| 136 | \ |
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| 137 | r2__ = ((x) >> G_SHIFT); \ |
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| 138 | r3__ = ((y) >> G_SHIFT); \ |
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| 139 | UN8_rb_MUL_UN8 (r2__, (a), t__); \ |
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| 140 | UN8_rb_MUL_UN8 (r3__, (b), t__); \ |
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| 141 | UN8_rb_ADD_UN8_rb (r2__, r3__, t__); \ |
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| 142 | \ |
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| 143 | (x) = r1__ | (r2__ << G_SHIFT); \ |
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| 144 | } while (0) |
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| 145 | |||
| 146 | /* |
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| 147 | * x_c = (x_c * a_c) / 255 |
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| 148 | */ |
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| 149 | #define UN8x4_MUL_UN8x4(x, a) \ |
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| 150 | do \ |
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| 151 | { \ |
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| 152 | uint32_t r1__, r2__, r3__, t__; \ |
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| 153 | \ |
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| 154 | r1__ = (x); \ |
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| 155 | r2__ = (a); \ |
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| 156 | UN8_rb_MUL_UN8_rb (r1__, r2__, t__); \ |
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| 157 | \ |
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| 158 | r2__ = (x) >> G_SHIFT; \ |
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| 159 | r3__ = (a) >> G_SHIFT; \ |
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| 160 | UN8_rb_MUL_UN8_rb (r2__, r3__, t__); \ |
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| 161 | \ |
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| 162 | (x) = r1__ | (r2__ << G_SHIFT); \ |
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| 163 | } while (0) |
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| 164 | |||
| 165 | /* |
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| 166 | * x_c = (x_c * a_c) / 255 + y_c |
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| 167 | */ |
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| 168 | #define UN8x4_MUL_UN8x4_ADD_UN8x4(x, a, y) \ |
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| 169 | do \ |
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| 170 | { \ |
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| 171 | uint32_t r1__, r2__, r3__, t__; \ |
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| 172 | \ |
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| 173 | r1__ = (x); \ |
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| 174 | r2__ = (a); \ |
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| 175 | UN8_rb_MUL_UN8_rb (r1__, r2__, t__); \ |
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| 176 | r2__ = (y) & RB_MASK; \ |
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| 177 | UN8_rb_ADD_UN8_rb (r1__, r2__, t__); \ |
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| 178 | \ |
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| 179 | r2__ = ((x) >> G_SHIFT); \ |
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| 180 | r3__ = ((a) >> G_SHIFT); \ |
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| 181 | UN8_rb_MUL_UN8_rb (r2__, r3__, t__); \ |
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| 182 | r3__ = ((y) >> G_SHIFT) & RB_MASK; \ |
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| 183 | UN8_rb_ADD_UN8_rb (r2__, r3__, t__); \ |
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| 184 | \ |
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| 185 | (x) = r1__ | (r2__ << G_SHIFT); \ |
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| 186 | } while (0) |
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| 187 | |||
| 188 | /* |
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| 189 | * x_c = (x_c * a_c + y_c * b) / 255 |
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| 190 | */ |
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| 191 | #define UN8x4_MUL_UN8x4_ADD_UN8x4_MUL_UN8(x, a, y, b) \ |
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| 192 | do \ |
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| 193 | { \ |
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| 194 | uint32_t r1__, r2__, r3__, t__; \ |
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| 195 | \ |
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| 196 | r1__ = (x); \ |
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| 197 | r2__ = (a); \ |
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| 198 | UN8_rb_MUL_UN8_rb (r1__, r2__, t__); \ |
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| 199 | r2__ = (y); \ |
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| 200 | UN8_rb_MUL_UN8 (r2__, (b), t__); \ |
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| 201 | UN8_rb_ADD_UN8_rb (r1__, r2__, t__); \ |
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| 202 | \ |
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| 203 | r2__ = (x) >> G_SHIFT; \ |
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| 204 | r3__ = (a) >> G_SHIFT; \ |
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| 205 | UN8_rb_MUL_UN8_rb (r2__, r3__, t__); \ |
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| 206 | r3__ = (y) >> G_SHIFT; \ |
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| 207 | UN8_rb_MUL_UN8 (r3__, (b), t__); \ |
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| 208 | UN8_rb_ADD_UN8_rb (r2__, r3__, t__); \ |
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| 209 | \ |
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| 210 | x = r1__ | (r2__ << G_SHIFT); \ |
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| 211 | } while (0) |
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| 212 | |||
| 213 | /* |
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| 214 | x_c = min(x_c + y_c, 255) |
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| 215 | */ |
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| 216 | #define UN8x4_ADD_UN8x4(x, y) \ |
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| 217 | do \ |
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| 218 | { \ |
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| 219 | uint32_t r1__, r2__, r3__, t__; \ |
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| 220 | \ |
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| 221 | r1__ = (x) & RB_MASK; \ |
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| 222 | r2__ = (y) & RB_MASK; \ |
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| 223 | UN8_rb_ADD_UN8_rb (r1__, r2__, t__); \ |
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| 224 | \ |
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| 225 | r2__ = ((x) >> G_SHIFT) & RB_MASK; \ |
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| 226 | r3__ = ((y) >> G_SHIFT) & RB_MASK; \ |
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| 227 | UN8_rb_ADD_UN8_rb (r2__, r3__, t__); \ |
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| 228 | \ |
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| 229 | x = r1__ | (r2__ << G_SHIFT); \ |
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| 230 | } while (0) |