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Y400A (gray alpha) input support in libswscale 

Originally committed as revision 32394 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Baptiste Coudurier 2010-09-27 22:24:03 +00:00
parent 59cb40b921
commit df0743e01e
4 changed files with 49 additions and 3 deletions
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42
libswscale/swscale.c
View File

@ -82,6 +82,7 @@ untested special converters
(x)==PIX_FMT_PAL8 \
|| (x)==PIX_FMT_YUYV422 \
|| (x)==PIX_FMT_UYVY422 \
|| (x)==PIX_FMT_Y400A \
|| isAnyRGB(x) \
)
@ -1435,6 +1436,34 @@ static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStrid
return srcSliceH;
}
static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24);
}
static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1];
}
static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++) {
//FIXME slow?
dst[0]= palette[src[i<<1]*4+0];
dst[1]= palette[src[i<<1]*4+1];
dst[2]= palette[src[i<<1]*4+2];
dst+= 3;
}
}
static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[])
{
@ -1446,7 +1475,16 @@ static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[],
uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
const uint8_t *srcPtr= src[0];
if (usePal(srcFormat)) {
if (srcFormat == PIX_FMT_Y400A) {
switch (dstFormat) {
case PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
case PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
case PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
case PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
}
} else if (usePal(srcFormat)) {
switch (dstFormat) {
case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
@ -1903,7 +1941,7 @@ int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[],
r= (i>>3 )*255;
g= ((i>>1)&3)*85;
b= (i&1 )*255;
} else if(c->srcFormat == PIX_FMT_GRAY8) {
} else if(c->srcFormat == PIX_FMT_GRAY8 || PIX_FMT_Y400A) {
r = g = b = i;
} else {
assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

4
libswscale/swscale_internal.h
View File

@ -378,6 +378,7 @@ const char *sws_format_name(enum PixelFormat format);
)
#define isGray(x) ( \
(x)==PIX_FMT_GRAY8 \
|| (x)==PIX_FMT_Y400A \
|| (x)==PIX_FMT_GRAY16BE \
|| (x)==PIX_FMT_GRAY16LE \
)
@ -440,9 +441,10 @@ const char *sws_format_name(enum PixelFormat format);
|| (x)==PIX_FMT_BGR32_1 \
|| (x)==PIX_FMT_RGB32 \
|| (x)==PIX_FMT_RGB32_1 \
|| (x)==PIX_FMT_Y400A \
|| (x)==PIX_FMT_YUVA420P \
)
#define usePal(x) (av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL)
#define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
extern const uint64_t ff_dither4[2];
extern const uint64_t ff_dither8[2];

5
libswscale/swscale_template.c
View File

@ -3001,6 +3001,7 @@ static void RENAME(sws_init_swScale)(SwsContext *c)
case PIX_FMT_YUV420P16BE:
case PIX_FMT_YUV422P16BE:
case PIX_FMT_YUV444P16BE:
case PIX_FMT_Y400A :
case PIX_FMT_GRAY16BE : c->lumToYV12 = RENAME(yuy2ToY); break;
case PIX_FMT_UYVY422 :
case PIX_FMT_YUV420P16LE:
@ -3033,10 +3034,14 @@ static void RENAME(sws_init_swScale)(SwsContext *c)
case PIX_FMT_RGB32_1:
case PIX_FMT_BGR32 :
case PIX_FMT_BGR32_1: c->alpToYV12 = abgrToA; break;
case PIX_FMT_Y400A : c->alpToYV12 = RENAME(yuy2ToY); break;
}
}
switch (srcFormat) {
case PIX_FMT_Y400A :
c->alpSrcOffset = 1;
break;
case PIX_FMT_RGB32 :
case PIX_FMT_BGR32 :
c->alpSrcOffset = 3;

1
libswscale/utils.c
View File

@ -81,6 +81,7 @@ const char *swscale_license(void)
|| (x)==PIX_FMT_RGB565 \
|| (x)==PIX_FMT_RGB555 \
|| (x)==PIX_FMT_GRAY8 \
|| (x)==PIX_FMT_Y400A \
|| (x)==PIX_FMT_YUV410P \
|| (x)==PIX_FMT_YUV440P \
|| (x)==PIX_FMT_NV12 \