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| author | Clément Bœsch <u@pkh.me> | 2016-02-26 22:34:10 +0100 |
|---|---|---|
| committer | Clément Bœsch <u@pkh.me> | 2016-02-27 11:13:26 +0100 |
| commit | 1e7a37f0a07f3f2077352d43602e36024f6c9f2e (patch) | |
| tree | 0b8b711a7894d547f7c0f6115c413b5cf6f1e920 /libswscale/yuv2rgb.c | |
| parent | f9987464cff3bb766107509964b97116996ad3f8 (diff) | |
| download | ffmpeg-streaming-1e7a37f0a07f3f2077352d43602e36024f6c9f2e.zip ffmpeg-streaming-1e7a37f0a07f3f2077352d43602e36024f6c9f2e.tar.gz | |
sws/yuv2rgb: clarify precision of coeff and offset for mmx code
It makes easier looking at the difference with the generic code just
below.
Diffstat (limited to 'libswscale/yuv2rgb.c')
| -rw-r--r-- | libswscale/yuv2rgb.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c index 9d79d79..62abb7d 100644 --- a/libswscale/yuv2rgb.c +++ b/libswscale/yuv2rgb.c @@ -817,12 +817,12 @@ av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], c->uOffset = 0x0400040004000400LL; c->vOffset = 0x0400040004000400LL; - c->yCoeff = roundToInt16(cy * 8192) * 0x0001000100010001ULL; - c->vrCoeff = roundToInt16(crv * 8192) * 0x0001000100010001ULL; - c->ubCoeff = roundToInt16(cbu * 8192) * 0x0001000100010001ULL; - c->vgCoeff = roundToInt16(cgv * 8192) * 0x0001000100010001ULL; - c->ugCoeff = roundToInt16(cgu * 8192) * 0x0001000100010001ULL; - c->yOffset = roundToInt16(oy * 8) * 0x0001000100010001ULL; + c->yCoeff = roundToInt16(cy * (1 << 13)) * 0x0001000100010001ULL; + c->vrCoeff = roundToInt16(crv * (1 << 13)) * 0x0001000100010001ULL; + c->ubCoeff = roundToInt16(cbu * (1 << 13)) * 0x0001000100010001ULL; + c->vgCoeff = roundToInt16(cgv * (1 << 13)) * 0x0001000100010001ULL; + c->ugCoeff = roundToInt16(cgu * (1 << 13)) * 0x0001000100010001ULL; + c->yOffset = roundToInt16(oy * (1 << 3)) * 0x0001000100010001ULL; c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy * (1 << 13)); c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy * (1 << 9)); |
