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SSE2: yuv->rgb speed-up for point-sampling

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- use statically initialized tables (if WEBP_YUV_USE_SSE2_TABLES is defined)
 - use SSE2 row conversion for yuv->ARGB / RGBA / ABGR / RGB / BGR
 - clean-up and harmonize the WebpUpsamplers[] usage.

Change-Id: Ic5f3659a995927bd7363defac99c1fc03a85a47d
This commit is contained in:
skal
2014-05-22 09:49:42 +02:00
parent 1b99c09cdc
commit a05dc1402c
11 changed files with 863 additions and 161 deletions
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10
src/dec/io.c
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@ -48,9 +48,10 @@ static int EmitSampledRGB(const VP8Io* const io, WebPDecParams* const p) {
WebPDecBuffer* const output = p->output;
WebPRGBABuffer* const buf = &output->u.RGBA;
uint8_t* const dst = buf->rgba + io->mb_y * buf->stride;
WebPSamplers[output->colorspace](io->y, io->y_stride,
io->u, io->v, io->uv_stride,
dst, buf->stride, io->mb_w, io->mb_h);
WebPSamplerProcessPlane(io->y, io->y_stride,
io->u, io->v, io->uv_stride,
dst, buf->stride, io->mb_w, io->mb_h,
WebPSamplers[output->colorspace]);
return io->mb_h;
}
@ -539,7 +540,7 @@ static int CustomSetup(VP8Io* io) {
if (!WebPIoInitFromOptions(p->options, io, is_alpha ? MODE_YUV : MODE_YUVA)) {
return 0;
}
if (is_alpha && WebPIsPremultipliedMode(colorspace)) WebPInitPremultiply();
if (io->use_scaling) {
const int ok = is_rgb ? InitRGBRescaler(io, p) : InitYUVRescaler(io, p);
if (!ok) {
@ -568,7 +569,6 @@ static int CustomSetup(VP8Io* io) {
p->emit = EmitYUV;
}
if (is_alpha) { // need transparency output
if (WebPIsPremultipliedMode(colorspace)) WebPInitPremultiply();
p->emit_alpha =
(colorspace == MODE_RGBA_4444 || colorspace == MODE_rgbA_4444) ?
EmitAlphaRGBA4444