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Fix broken palette8to*. 

Originally committed as revision 27817 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Vitor Sessak 2008-10-23 19:13:11 +00:00
parent b774fdd7a4
commit 522ce95786
3 changed files with 43 additions and 75 deletions
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71
libswscale/rgb2rgb.c
View File

@ -213,84 +213,23 @@ void sws_rgb2rgb_init(int flags){
}
/**
* Palette is assumed to contain BGR32.
* Convert the palette to the same packet 32-bit format as the palette
*/
void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
void palette8topacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
/*
for (i=0; i<num_pixels; i++)
((unsigned *)dst)[i] = ((unsigned *)palette)[src[i]];
*/
for (i=0; i<num_pixels; i++)
{
#ifdef WORDS_BIGENDIAN
dst[3]= palette[src[i]*4+2];
dst[2]= palette[src[i]*4+1];
dst[1]= palette[src[i]*4+0];
#else
//FIXME slow?
dst[0]= palette[src[i]*4+2];
dst[1]= palette[src[i]*4+1];
dst[2]= palette[src[i]*4+0];
//dst[3]= 0; /* do we need this cleansing? */
#endif
dst+= 4;
}
}
void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
for (i=0; i<num_pixels; i++)
{
#ifdef WORDS_BIGENDIAN
dst[3]= palette[src[i]*4+0];
dst[2]= palette[src[i]*4+1];
dst[1]= palette[src[i]*4+2];
#else
//FIXME slow?
dst[0]= palette[src[i]*4+0];
dst[1]= palette[src[i]*4+1];
dst[2]= palette[src[i]*4+2];
//dst[3]= 0; /* do we need this cleansing? */
#endif
dst+= 4;
}
((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
}
/**
* Palette is assumed to contain BGR32.
* Palette format: ABCD -> dst format: ABC
*/
void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
void palette8topacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
/*
Writes 1 byte too much and might cause alignment issues on some architectures?
for (i=0; i<num_pixels; i++)
((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[src[i]];
*/
for (i=0; i<num_pixels; i++)
{
//FIXME slow?
dst[0]= palette[src[i]*4+2];
dst[1]= palette[src[i]*4+1];
dst[2]= palette[src[i]*4+0];
dst+= 3;
}
}
void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
{
long i;
/*
Writes 1 byte too much and might cause alignment issues on some architectures?
for (i=0; i<num_pixels; i++)
((unsigned *)(&dst[i*3])) = ((unsigned *)palette)[src[i]];
*/
for (i=0; i<num_pixels; i++)
{
//FIXME slow?

6
libswscale/rgb2rgb.h
View File

@ -61,10 +61,8 @@ extern void rgb15tobgr15(const uint8_t *src, uint8_t *dst, long src_size);
extern void bgr8torgb8 (const uint8_t *src, uint8_t *dst, long src_size);
extern void palette8torgb32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8tobgr32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8torgb24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8tobgr24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8topacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8topacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8torgb16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8tobgr16(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);
extern void palette8torgb15(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette);

41
libswscale/swscale.c
View File

@ -1729,10 +1729,12 @@ static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int sr
sws_format_name(srcFormat), sws_format_name(dstFormat));
switch(dstFormat){
case PIX_FMT_RGB32: conv = palette8torgb32; break;
case PIX_FMT_BGR32: conv = palette8tobgr32; break;
case PIX_FMT_RGB24: conv = palette8torgb24; break;
case PIX_FMT_BGR24: conv = palette8tobgr24; break;
case PIX_FMT_RGB32 : conv = palette8topacked32; break;
case PIX_FMT_BGR32 : conv = palette8topacked32; break;
case PIX_FMT_BGR32_1: conv = palette8topacked32; break;
case PIX_FMT_RGB32_1: conv = palette8topacked32; break;
case PIX_FMT_RGB24 : conv = palette8topacked24; break;
case PIX_FMT_BGR24 : conv = palette8topacked24; break;
default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
sws_format_name(srcFormat), sws_format_name(dstFormat)); break;
}
@ -2343,8 +2345,10 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int d
if ((usePal(srcFormat) && (
dstFormat == PIX_FMT_RGB32 ||
dstFormat == PIX_FMT_RGB32_1 ||
dstFormat == PIX_FMT_RGB24 ||
dstFormat == PIX_FMT_BGR32 ||
dstFormat == PIX_FMT_BGR32_1 ||
dstFormat == PIX_FMT_BGR24)))
c->swScale= pal2rgbWrapper;
@ -2739,7 +2743,34 @@ int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
c->pal_yuv[i]= y + (u<<8) + (v<<16);
c->pal_rgb[i]= b + (g<<8) + (r<<16);
switch(c->dstFormat) {
case PIX_FMT_BGR32:
#ifndef WORDS_BIGENDIAN
case PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= r + (g<<8) + (b<<16);
break;
case PIX_FMT_BGR32_1:
#ifdef WORDS_BIGENDIAN
case PIX_FMT_BGR24:
#endif
c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;
break;
case PIX_FMT_RGB32_1:
#ifdef WORDS_BIGENDIAN
case PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;
break;
case PIX_FMT_RGB32:
#ifndef WORDS_BIGENDIAN
case PIX_FMT_BGR24:
#endif
default:
c->pal_rgb[i]= b + (g<<8) + (r<<16);
}
}
}