зеркало из https://github.com/mozilla/pjs.git
89 строки
2.6 KiB
Diff
89 строки
2.6 KiB
Diff
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Index: oggplay_yuv2rgb.c
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===================================================================
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--- oggplay_yuv2rgb.c (revision 3733)
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+++ oggplay_yuv2rgb.c (working copy)
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@@ -357,29 +357,27 @@
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ptro2 = ptro;
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for (j = 0; j < yuv->y_width; j += 2) {
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- short pr, pg, pb;
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+ short pr, pg, pb, y;
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short r, g, b;
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- //pr = ((128 + (ptrv[j/2] - 128) * 292) >> 8) - 16; /* 1.14 * 256 */
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- pr = (-41344 + ptrv[j/2] * 292) >> 8;
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- //pg = ((128 - (ptru[j/2] - 128) * 101 - (ptrv[j/2] - 128) * 149) >> 8)-16;
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- // /* 0.395 & 0.581 */
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- pg = (28032 - ptru[j/2] * 101 - ptrv[j/2] * 149) >> 8;
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- //pb = ((128 + (ptru[j/2] - 128) * 520) >> 8) - 16; /* 2.032 */
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- pb = (-70528 + ptru[j/2] * 520) >> 8;
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+ pr = (-56992 + ptrv[j/2] * 409) >> 8;
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+ pg = (34784 - ptru[j/2] * 100 - ptrv[j/2] * 208) >> 8;
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+ pb = (-70688 + ptru[j/2] * 516) >> 8;
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- r = ptry[j] + pr;
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- g = ptry[j] + pg;
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- b = ptry[j] + pb;
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+ y = 298*ptry[j] >> 8;
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+ r = y + pr;
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+ g = y + pg;
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+ b = y + pb;
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*ptro2++ = CLAMP(r);
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*ptro2++ = CLAMP(g);
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*ptro2++ = CLAMP(b);
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*ptro2++ = 255;
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- r = ptry[j + 1] + pr;
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- g = ptry[j + 1] + pg;
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- b = ptry[j + 1] + pb;
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+ y = 298*ptry[j + 1] >> 8;
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+ r = y + pr;
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+ g = y + pg;
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+ b = y + pb;
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*ptro2++ = CLAMP(r);
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*ptro2++ = CLAMP(g);
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@@ -409,29 +407,27 @@
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ptro2 = ptro;
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for (j = 0; j < yuv->y_width; j += 2) {
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- short pr, pg, pb;
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+ short pr, pg, pb, y;
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short r, g, b;
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- //pr = ((128 + (ptrv[j/2] - 128) * 292) >> 8) - 16; /* 1.14 * 256 */
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- pr = (-41344 + ptrv[j/2] * 292) >> 8;
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- //pg = ((128 - (ptru[j/2] - 128) * 101 - (ptrv[j/2] - 128) * 149) >> 8)-16;
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- // /* 0.395 & 0.581 */
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- pg = (28032 - ptru[j/2] * 101 - ptrv[j/2] * 149) >> 8;
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- //pb = ((128 + (ptru[j/2] - 128) * 520) >> 8) - 16; /* 2.032 */
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- pb = (-70528 + ptru[j/2] * 520) >> 8;
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+ pr = (-56992 + ptrv[j/2] * 409) >> 8;
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+ pg = (34784 - ptru[j/2] * 100 - ptrv[j/2] * 208) >> 8;
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+ pb = (-70688 + ptru[j/2] * 516) >> 8;
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- r = ptry[j] + pr;
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- g = ptry[j] + pg;
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- b = ptry[j] + pb;
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+ y = 298*ptry[j] >> 8;
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+ r = y + pr;
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+ g = y + pg;
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+ b = y + pb;
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*ptro2++ = CLAMP(b);
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*ptro2++ = CLAMP(g);
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*ptro2++ = CLAMP(r);
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*ptro2++ = 255;
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- r = ptry[j + 1] + pr;
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- g = ptry[j + 1] + pg;
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- b = ptry[j + 1] + pb;
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+ y = 298*ptry[j + 1] >> 8;
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+ r = y + pr;
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+ g = y + pg;
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+ b = y + pb;
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*ptro2++ = CLAMP(b);
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*ptro2++ = CLAMP(g);
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