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Unscaled Planar RGB -> RGB support in swscale.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Themaister 2011-11-06 10:43:47 +01:00 committed by Michael Niedermayer
parent 079700f582
commit 1e79926f9e
1 changed files with 89 additions and 0 deletions
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89
libswscale/swscale_unscaled.c
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@ -255,6 +255,92 @@ static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[],
return srcSliceH;
}
static void gbr24ptopacked24(const uint8_t* src[], int srcStride[], uint8_t* dst, int dstStride, int srcSliceH, int width)
{
int x, h, i;
for (h = 0; h < srcSliceH; h++) {
uint8_t *dest = dst + dstStride * h;
for (x = 0; x < width; x++) {
*dest++ = src[0][x];
*dest++ = src[1][x];
*dest++ = src[2][x];
}
for (i = 0; i < 3; i++)
src[i] += srcStride[i];
}
}
static void gbr24ptopacked32(const uint8_t* src[], int srcStride[], uint8_t* dst, int dstStride, int srcSliceH, int alpha_first, int width)
{
int x, h, i;
for (h = 0; h < srcSliceH; h++) {
uint8_t *dest = dst + dstStride * h;
if (alpha_first) {
for (x = 0; x < width; x++) {
*dest++ = 0xff;
*dest++ = src[0][x];
*dest++ = src[1][x];
*dest++ = src[2][x];
}
} else {
for (x = 0; x < width; x++) {
*dest++ = src[0][x];
*dest++ = src[1][x];
*dest++ = src[2][x];
*dest++ = 0xff;
}
}
for (i = 0; i < 3; i++)
src[i] += srcStride[i];
}
}
static int planarRgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[])
{
int alpha_first = 0;
if (c->srcFormat != PIX_FMT_GBR24P) {
av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));
return srcSliceH;
}
switch (c->dstFormat) {
case PIX_FMT_BGR24:
gbr24ptopacked24((const uint8_t* []) {src[1], src[0], src[2]}, (int []) {srcStride[1], srcStride[0], srcStride[2]},
dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, c->srcW);
break;
case PIX_FMT_RGB24:
gbr24ptopacked24((const uint8_t* []) {src[2], src[0], src[1]}, (int []) {srcStride[2], srcStride[0], srcStride[1]},
dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, c->srcW);
break;
case PIX_FMT_ARGB:
alpha_first = 1;
case PIX_FMT_RGBA:
gbr24ptopacked32((const uint8_t* []) {src[2], src[0], src[1]}, (int []) {srcStride[2], srcStride[0], srcStride[1]},
dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, alpha_first, c->srcW);
break;
case PIX_FMT_ABGR:
alpha_first = 1;
case PIX_FMT_BGRA:
gbr24ptopacked32((const uint8_t* []) {src[1], src[0], src[2]}, (int []) {srcStride[1], srcStride[0], srcStride[2]},
dst[0] + srcSliceY * dstStride[0], dstStride[0], srcSliceH, alpha_first, c->srcW);
break;
default:
av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));
}
return srcSliceH;
}
#define isRGBA32(x) ( \
(x) == PIX_FMT_ARGB \
|| (x) == PIX_FMT_RGBA \
@ -608,6 +694,9 @@ void ff_get_unscaled_swscale(SwsContext *c)
&& (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
c->swScale= rgbToRgbWrapper;
if (isAnyRGB(srcFormat) && isPlanar(srcFormat) && isAnyRGB(dstFormat) && !isPlanar(dstFormat))
c->swScale= planarRgbToRgbWrapper;
if ((usePal(srcFormat) && (
dstFormat == PIX_FMT_RGB32 ||
dstFormat == PIX_FMT_RGB32_1 ||