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sws: use shift for chroma sample up convertion

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sws: use shifts for non full range luma sample upconvertion

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
pull/2/head
Michael Niedermayer 14 years ago
parent ee0ff051f2
commit abe0b8e9f3
9 changed files with 72 additions and 59 deletions
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  1. 33
      libswscale/swscale_unscaled.c
  2. 2
      tests/ref/fate/v210
  3. 16
      tests/ref/lavfi/pixdesc
  4. 16
      tests/ref/lavfi/pixfmts_copy
  5. 8
      tests/ref/lavfi/pixfmts_crop
  6. 8
      tests/ref/lavfi/pixfmts_hflip
  7. 16
      tests/ref/lavfi/pixfmts_null
  8. 16
      tests/ref/lavfi/pixfmts_scale
  9. 16
      tests/ref/lavfi/pixfmts_vflip

33
libswscale/swscale_unscaled.c
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@ -444,6 +444,7 @@ static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[
int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
const uint8_t *srcPtr= src[plane];
uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
int shiftonly= plane==1 || plane==2 || (!c->srcRange && plane==0);
if (!dst[plane]) continue;
// ignore palette for GRAY8
@ -469,14 +470,19 @@ static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[
}
} else if (src_depth == 8) {
for (i = 0; i < height; i++) {
#define COPY816(w)\
if(shiftonly){\
for (j = 0; j < length; j++)\
w(&dstPtr2[j], srcPtr[j]<<(dst_depth-8));\
}else{\
for (j = 0; j < length; j++)\
w(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |\
(srcPtr[j]>>(2*8-dst_depth)));\
}
if(isBE(c->dstFormat)){
for (j = 0; j < length; j++)
AV_WB16(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |
(srcPtr[j]>>(2*8-dst_depth)));
COPY816(AV_WB16)
} else {
for (j = 0; j < length; j++)
AV_WL16(&dstPtr2[j], (srcPtr[j]<<(dst_depth-8)) |
(srcPtr[j]>>(2*8-dst_depth)));
COPY816(AV_WL16)
}
dstPtr2 += dstStride[plane]/2;
srcPtr += srcStride[plane];
@ -484,10 +490,17 @@ static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[
} else if (src_depth <= dst_depth) {
for (i = 0; i < height; i++) {
#define COPY_UP(r,w) \
for (j = 0; j < length; j++){ \
unsigned int v= r(&srcPtr2[j]);\
w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \
(v>>(2*src_depth-dst_depth)));\
if(shiftonly){\
for (j = 0; j < length; j++){ \
unsigned int v= r(&srcPtr2[j]);\
w(&dstPtr2[j], v<<(dst_depth-src_depth));\
}\
}else{\
for (j = 0; j < length; j++){ \
unsigned int v= r(&srcPtr2[j]);\
w(&dstPtr2[j], (v<<(dst_depth-src_depth)) | \
(v>>(2*src_depth-dst_depth)));\
}\
}
if(isBE(c->srcFormat)){
if(isBE(c->dstFormat)){

2
tests/ref/fate/v210
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@ -1 +1 @@
0, 0, 3686400, 0x75ee1dde
0, 0, 3686400, 0x8d5c3847

16
tests/ref/lavfi/pixdesc
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16
tests/ref/lavfi/pixfmts_copy
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8
tests/ref/lavfi/pixfmts_crop
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8
tests/ref/lavfi/pixfmts_hflip
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tests/ref/lavfi/pixfmts_null
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tests/ref/lavfi/pixfmts_scale
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tests/ref/lavfi/pixfmts_vflip
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