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Code Issues Releases Activity

sws: Fix unscaled >8bit planar chroma handling.

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Fixes Ticket840

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-01-22 06:44:34 +01:00
parent 378b7beff5
commit 234405315f
1 changed files with 21 additions and 4 deletions
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25
libswscale/swscale_unscaled.c
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@ -56,6 +56,20 @@ static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
}
}
static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
int alpha, int bits)
{
int i, j;
uint8_t *ptr = plane + stride * y;
int v = alpha ? -1 : (1<<bits);
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
AV_WN16(ptr+2*j, v);
}
ptr += stride;
}
}
static void copyPlane(const uint8_t *src, int srcStride,
int srcSliceY, int srcSliceH, int width,
uint8_t *dst, int dstStride)
@ -615,10 +629,13 @@ static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
// ignore palette for GRAY8
if (plane == 1 && !dst[2]) continue;
if (!src[plane] || (plane == 1 && !src[2])) {
if (is16BPS(c->dstFormat))
length *= 2;
fillPlane(dst[plane], dstStride[plane], length, height, y,
(plane == 3) ? 255 : 128);
if (is16BPS(c->dstFormat) || isNBPS(c->dstFormat)) {
fillPlane16(dst[plane], dstStride[plane], length, height, y,
plane == 3, av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1);
} else {
fillPlane(dst[plane], dstStride[plane], length, height, y,
(plane == 3) ? 255 : 128);
}
} else {
if(isNBPS(c->srcFormat) || isNBPS(c->dstFormat)
|| (is16BPS(c->srcFormat) != is16BPS(c->dstFormat))