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swscale/output: add VUYA output support

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2022-08-05 13:44:16 -03:00
parent 23758380d0
commit 1974813261
14 changed files with 70 additions and 1 deletions
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57
libswscale/output.c
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@ -2584,6 +2584,60 @@ yuv2ayuv64le_X_c(SwsContext *c, const int16_t *lumFilter,
}
}
static void
yuv2vuya_X_c(SwsContext *c, const int16_t *lumFilter,
const int16_t **lumSrc, int lumFilterSize,
const int16_t *chrFilter, const int16_t **chrUSrc,
const int16_t **chrVSrc, int chrFilterSize,
const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
{
int hasAlpha = !!alpSrc;
int i;
for (i = 0; i < dstW; i++) {
int j;
int Y = 1 << 18, U = 1 << 18;
int V = 1 << 18, A = 255;
for (j = 0; j < lumFilterSize; j++)
Y += lumSrc[j][i] * lumFilter[j];
for (j = 0; j < lumFilterSize; j++)
U += chrUSrc[j][i] * chrFilter[j];
for (j = 0; j < lumFilterSize; j++)
V += chrVSrc[j][i] * chrFilter[j];
Y >>= 19;
U >>= 19;
V >>= 19;
if (Y & 0x100)
Y = av_clip_uint8(Y);
if (U & 0x100)
U = av_clip_uint8(U);
if (V & 0x100)
V = av_clip_uint8(V);
if (hasAlpha) {
A = 1 << 18;
for (j = 0; j < lumFilterSize; j++)
A += alpSrc[j][i] * lumFilter[j];
A >>= 19;
if (A & 0x100)
A = av_clip_uint8(A);
}
dest[4 * i ] = V;
dest[4 * i + 1] = U;
dest[4 * i + 2] = Y;
dest[4 * i + 3] = A;
}
}
av_cold void ff_sws_init_output_funcs(SwsContext *c,
yuv2planar1_fn *yuv2plane1,
yuv2planarX_fn *yuv2planeX,
@ -3086,5 +3140,8 @@ av_cold void ff_sws_init_output_funcs(SwsContext *c,
case AV_PIX_FMT_AYUV64LE:
*yuv2packedX = yuv2ayuv64le_X_c;
break;
case AV_PIX_FMT_VUYA:
*yuv2packedX = yuv2vuya_X_c;
break;
}
}