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Move internal function ff_set_systematic_pal() to libavcore, and

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rename it ff_set_systematic_pal2().

Originally committed as revision 25712 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini
2010-11-09 22:22:36 +00:00
parent a29039aef3
commit ed5d30d91c
8 changed files with 85 additions and 44 deletions
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41
libavcore/imgutils.c
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@@ -22,6 +22,7 @@
*/
#include "imgutils.h"
#include "internal.h"
#include "libavutil/pixdesc.h"
void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
@@ -120,6 +121,46 @@ int av_image_fill_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int heigh
return total_size;
}
int ff_set_systematic_pal2(uint32_t pal[256], enum PixelFormat pix_fmt)
{
int i;
for (i = 0; i < 256; i++) {
int r, g, b;
switch (pix_fmt) {
case PIX_FMT_RGB8:
r = (i>>5 )*36;
g = ((i>>2)&7)*36;
b = (i&3 )*85;
break;
case PIX_FMT_BGR8:
b = (i>>6 )*85;
g = ((i>>3)&7)*36;
r = (i&7 )*36;
break;
case PIX_FMT_RGB4_BYTE:
r = (i>>3 )*255;
g = ((i>>1)&3)*85;
b = (i&1 )*255;
break;
case PIX_FMT_BGR4_BYTE:
b = (i>>3 )*255;
g = ((i>>1)&3)*85;
r = (i&1 )*255;
break;
case PIX_FMT_GRAY8:
r = b = g = i;
break;
default:
return AVERROR(EINVAL);
}
pal[i] = b + (g<<8) + (r<<16);
}
return 0;
}
typedef struct ImgUtils {
const AVClass *class;
int log_offset;