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Unscaled Planar RGB -> RGB support in swscale.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Hans-Kristian Arntzen 2011-11-06 10:43:47 +01:00 committed by Derek Buitenhuis
parent 0aaa45ef69
commit b991b300f2
2 changed files with 113 additions and 0 deletions
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8
libswscale/swscale_internal.h
View File

@ -627,6 +627,14 @@ const char *sws_format_name(enum PixelFormat format);
(av_pix_fmt_descriptors[x].nb_components >= 2 && \
(av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR))
#define isPackedRGB(x) \
((av_pix_fmt_descriptors[x].flags & \
(PIX_FMT_PLANAR | PIX_FMT_RGB)) == PIX_FMT_RGB)
#define isPlanarRGB(x) \
((av_pix_fmt_descriptors[x].flags & \
(PIX_FMT_PLANAR | PIX_FMT_RGB)) == (PIX_FMT_PLANAR | PIX_FMT_RGB))
#define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || \
(av_pix_fmt_descriptors[x].flags & PIX_FMT_PSEUDOPAL) || \
(x) == PIX_FMT_Y400A)

105
libswscale/swscale_unscaled.c
View File

@ -344,6 +344,108 @@ 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_GBRP) {
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 \
@ -797,6 +899,9 @@ void ff_get_unscaled_swscale(SwsContext *c)
&& (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
c->swScale= rgbToRgbWrapper;
if (isPlanarRGB(srcFormat) && isPackedRGB(dstFormat))
c->swScale = planarRgbToRgbWrapper;
/* bswap 16 bits per pixel/component packed formats */
if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR444) ||
IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR48) ||