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In VPX 3 planed --> packed conversion code, pull constant expressions out of

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the loop.  For the release build and the test animation, this lowers the time
to 3-4 ms per conversion of one frame on my desktop machine.

git-svn-id: https://svn.eduke32.com/eduke32@2241 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-01-10 23:43:33 +00:00
parent a86dfe661b
commit f826ffb4d0
1 changed files with 25 additions and 8 deletions
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33
polymer/eduke32/source/animvpx.c
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@ -218,7 +218,6 @@ ATTRIBUTE((optimize("O3")))
int32_t animvpx_nextpic(animvpx_codec_ctx *codec, uint8_t **picptr)
{
int32_t ret, corrupted;
uint32_t x, y;
vpx_image_t *img;
if (codec->initstate <= 0) // not inited or error
@ -282,13 +281,31 @@ read_ivf_frame:
}
/*** 3 planes --> packed conversion ***/
for (y=0; y<img->d_h; y++)
for (x=0; x<img->d_w; x++)
{
codec->pic[(img->d_w*y + x)<<2] = img->planes[VPX_PLANE_Y][img->stride[VPX_PLANE_Y]*y + x];
codec->pic[((img->d_w*y + x)<<2) + 1] = img->planes[VPX_PLANE_U][img->stride[VPX_PLANE_U]*(y>>1) + (x>>1)];
codec->pic[((img->d_w*y + x)<<2) + 2] = img->planes[VPX_PLANE_V][img->stride[VPX_PLANE_V]*(y>>1) + (x>>1)];
}
{
// int32_t t=getticks();
uint8_t *const dstpic = codec->pic;
const uint8_t *const yplane = img->planes[VPX_PLANE_Y];
const uint8_t *const uplane = img->planes[VPX_PLANE_U];
const uint8_t *const vplane = img->planes[VPX_PLANE_V];
int32_t ystride = img->stride[VPX_PLANE_Y];
int32_t ustride = img->stride[VPX_PLANE_U];
int32_t vstride = img->stride[VPX_PLANE_V];
int32_t x, y;
const int32_t width=img->d_w, height = img->d_h;
for (y=0; y<height; y++)
for (x=0; x<width; x++)
{
dstpic[(width*y + x)<<2] = yplane[ystride*y + x];
dstpic[((width*y + x)<<2) + 1] = uplane[ustride*(y>>1) + (x>>1)];
dstpic[((width*y + x)<<2) + 2] = vplane[vstride*(y>>1) + (x>>1)];
}
// initprintf("%d ms\n", getticks()-t);
}
*picptr = codec->pic;
return 0;