mirror of https://git.ffmpeg.org/ffmpeg.git
swscale: fix yuv range correction when using 16-bit scaling.
(cherry picked from commit e0b8fff6c7
)
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45f6ffe5e9
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ebb0d60353
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@ -1982,8 +1982,8 @@ static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
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int32_t *dstU = (int32_t *) _dstU;
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int32_t *dstV = (int32_t *) _dstV;
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for (i = 0; i < width; i++) {
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dstU[i] = (FFMIN(dstU[i],30775)*4663 - 9289992)>>12; //-264
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dstV[i] = (FFMIN(dstV[i],30775)*4663 - 9289992)>>12; //-264
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dstU[i] = (FFMIN(dstU[i],30775<<4)*4663 - (9289992<<4))>>12; //-264
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dstV[i] = (FFMIN(dstV[i],30775<<4)*4663 - (9289992<<4))>>12; //-264
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}
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}
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static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
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@ -1992,8 +1992,8 @@ static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
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int32_t *dstU = (int32_t *) _dstU;
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int32_t *dstV = (int32_t *) _dstV;
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for (i = 0; i < width; i++) {
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dstU[i] = (dstU[i]*1799 + 4081085)>>11; //1469
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dstV[i] = (dstV[i]*1799 + 4081085)>>11; //1469
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dstU[i] = (dstU[i]*1799 + (4081085<<4))>>11; //1469
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dstV[i] = (dstV[i]*1799 + (4081085<<4))>>11; //1469
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}
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}
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static void lumRangeToJpeg16_c(int16_t *_dst, int width)
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@ -2001,14 +2001,14 @@ static void lumRangeToJpeg16_c(int16_t *_dst, int width)
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int i;
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int32_t *dst = (int32_t *) _dst;
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for (i = 0; i < width; i++)
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dst[i] = (FFMIN(dst[i],30189)*19077 - 39057361)>>14;
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dst[i] = (FFMIN(dst[i],30189<<4)*19077 - (39057361<<4))>>14;
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}
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static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
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{
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int i;
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int32_t *dst = (int32_t *) _dst;
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for (i = 0; i < width; i++)
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dst[i] = (dst[i]*14071 + 33561947)>>14;
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dst[i] = (dst[i]*14071 + (33561947<<4))>>14;
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}
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static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
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