mirror of https://git.ffmpeg.org/ffmpeg.git
swscale: make DITHER_COPY() support non native endian source
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -1857,22 +1857,22 @@ static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[
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return srcSliceH;
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}
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#define DITHER_COPY(dst, dstStride, src, srcStride)\
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#define DITHER_COPY(dst, dstStride, src, srcStride, bswap)\
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for (i = 0; i < height; i++) {\
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int shift= src_depth-dst_depth;\
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uint8_t *dither= dithers[src_depth-9][i&7];\
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for (j = 0; j < length-7; j+=8){\
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dst[j+0] = (src[j+0] + dither[0])>>shift;\
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dst[j+1] = (src[j+1] + dither[1])>>shift;\
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dst[j+2] = (src[j+2] + dither[2])>>shift;\
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dst[j+3] = (src[j+3] + dither[3])>>shift;\
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dst[j+4] = (src[j+4] + dither[4])>>shift;\
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dst[j+5] = (src[j+5] + dither[5])>>shift;\
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dst[j+6] = (src[j+6] + dither[6])>>shift;\
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dst[j+7] = (src[j+7] + dither[7])>>shift;\
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dst[j+0] = (bswap(src[j+0]) + dither[0])>>shift;\
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dst[j+1] = (bswap(src[j+1]) + dither[1])>>shift;\
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dst[j+2] = (bswap(src[j+2]) + dither[2])>>shift;\
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dst[j+3] = (bswap(src[j+3]) + dither[3])>>shift;\
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dst[j+4] = (bswap(src[j+4]) + dither[4])>>shift;\
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dst[j+5] = (bswap(src[j+5]) + dither[5])>>shift;\
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dst[j+6] = (bswap(src[j+6]) + dither[6])>>shift;\
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dst[j+7] = (bswap(src[j+7]) + dither[7])>>shift;\
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}\
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for (; j < length; j++)\
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dst[j] = (src[j] + dither[j&7])>>shift;\
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dst[j] = (bswap(src[j]) + dither[j&7])>>shift;\
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dst += dstStride;\
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src += srcStride;\
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}
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@ -1904,7 +1904,7 @@ static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[
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uint16_t *dstPtr2 = (uint16_t*)dstPtr;
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if (dst_depth == 8) {
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DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2)
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DITHER_COPY(dstPtr, dstStride[plane], srcPtr2, srcStride[plane]/2, )
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} else if (src_depth == 8) {
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for (i = 0; i < height; i++) {
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for (j = 0; j < length; j++)
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@ -1928,7 +1928,8 @@ static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[
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srcPtr2 += srcStride[plane]/2;
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}
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} else {
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DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2)
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//FIXME non native endian
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DITHER_COPY(dstPtr2, dstStride[plane]/2, srcPtr2, srcStride[plane]/2, )
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}
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} else if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
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//FIXME add dither
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