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swscale: refactor vertical scaler

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This commit is contained in:
Pedro Arthur
2015-08-18 11:47:55 -03:00
parent fffae8e605
commit 62d176de12
6 changed files with 378 additions and 40 deletions
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20
libswscale/slice.c
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@ -214,6 +214,7 @@ int ff_init_filters(SwsContext * c)
int index;
int num_ydesc;
int num_cdesc;
int num_vdesc = isPlanarYUV(c->dstFormat) && !isGray(c->dstFormat) ? 2 : 1;
int need_lum_conv = c->lumToYV12 || c->readLumPlanar || c->alpToYV12 || c->readAlpPlanar;
int need_chr_conv = c->chrToYV12 || c->readChrPlanar;
int srcIdx, dstIdx;
@ -228,8 +229,8 @@ int ff_init_filters(SwsContext * c)
num_ydesc = need_lum_conv ? 2 : 1;
num_cdesc = need_chr_conv ? 2 : 1;
c->numSlice = FFMAX(num_ydesc, num_cdesc) + 1;
c->numDesc = num_ydesc + num_cdesc;
c->numSlice = FFMAX(num_ydesc, num_cdesc) + 2;
c->numDesc = num_ydesc + num_cdesc + num_vdesc;
c->descIndex[0] = num_ydesc;
c->descIndex[1] = num_ydesc + num_cdesc;
@ -243,12 +244,13 @@ int ff_init_filters(SwsContext * c)
res = alloc_slice(&c->slice[0], c->srcFormat, c->srcH, c->chrSrcH, c->chrSrcHSubSample, c->chrSrcVSubSample, 0);
if (res < 0) goto cleanup;
for (i = 1; i < c->numSlice-1; ++i) {
for (i = 1; i < c->numSlice-2; ++i) {
res = alloc_slice(&c->slice[i], c->srcFormat, c->vLumFilterSize + MAX_LINES_AHEAD, c->vChrFilterSize + MAX_LINES_AHEAD, c->chrSrcHSubSample, c->chrSrcVSubSample, 0);
if (res < 0) goto cleanup;
res = alloc_lines(&c->slice[i], FFALIGN(c->srcW*2+78, 16), c->srcW);
if (res < 0) goto cleanup;
}
// horizontal scaler output
res = alloc_slice(&c->slice[i], c->srcFormat, c->vLumFilterSize + MAX_LINES_AHEAD, c->vChrFilterSize + MAX_LINES_AHEAD, c->chrDstHSubSample, c->chrDstVSubSample, 1);
if (res < 0) goto cleanup;
res = alloc_lines(&c->slice[i], dst_stride, c->dstW);
@ -256,6 +258,11 @@ int ff_init_filters(SwsContext * c)
fill_ones(&c->slice[i], dst_stride>>1, c->dstBpc == 16);
// vertical scaler output
++i;
res = alloc_slice(&c->slice[i], c->dstFormat, c->dstH, c->chrDstH, c->chrDstHSubSample, c->chrDstVSubSample, 0);
if (res < 0) goto cleanup;
index = 0;
srcIdx = 0;
dstIdx = 1;
@ -290,6 +297,13 @@ int ff_init_filters(SwsContext * c)
ff_init_desc_no_chr(&c->desc[index], &c->slice[srcIdx], &c->slice[dstIdx]);
}
++index;
{
srcIdx = c->numSlice - 2;
dstIdx = c->numSlice - 1;
ff_init_vscale(c, c->desc + index, c->slice + srcIdx, c->slice + dstIdx);
}
return 0;
cleanup: