ffmpeg | branch: master | Clément Bœsch <[email protected]> | Fri Feb 26 22:34:10 2016 +0100| [1e7a37f0a07f3f2077352d43602e36024f6c9f2e] | committer: Clément Bœsch
sws/yuv2rgb: clarify precision of coeff and offset for mmx code It makes easier looking at the difference with the generic code just below. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1e7a37f0a07f3f2077352d43602e36024f6c9f2e --- libswscale/yuv2rgb.c | 12 ++++++------ 1 file 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)); _______________________________________________ ffmpeg-cvslog mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
