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added swf_ImageGetNumberOfPaletteEntries2() function
author
kramm
<kramm>
Fri, 1 Apr 2005 07:50:56 +0000
(07:50 +0000)
committer
kramm
<kramm>
Fri, 1 Apr 2005 07:50:56 +0000
(07:50 +0000)
lib/modules/swfbits.c
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diff --git
a/lib/modules/swfbits.c
b/lib/modules/swfbits.c
index
bc1e0f8
..
5b98b17
100644
(file)
--- a/
lib/modules/swfbits.c
+++ b/
lib/modules/swfbits.c
@@
-37,6
+37,30
@@
int swf_ImageHasAlpha(RGBA*img, int width, int height)
return hasalpha;
}
return hasalpha;
}
+int swf_ImageGetNumberOfPaletteEntries2(RGBA*_img, int width, int height)
+{
+ int len = width*height;
+ int t;
+ U32* img = (U32*)_img;
+ U32 color1 = img[0];
+ U32 color2 = 0;
+ for(t=1;t<len;t++) {
+ if(img[t] != color1) {
+ color2 = img[t];
+ break;
+ }
+ }
+ if(t==len)
+ return 1;
+
+ for(;t<len;t++) {
+ if(img[t] != color1 && img[t] != color2) {
+ return width*height;
+ }
+ }
+ return 2;
+}
+
/*int swf_ImageGetNumberOfPaletteEntries(RGBA*img, int width, int height, RGBA*palette)
{
int len = width*height;
/*int swf_ImageGetNumberOfPaletteEntries(RGBA*img, int width, int height, RGBA*palette)
{
int len = width*height;
@@
-1097,7
+1121,6
@@
static scale_lookup_t**make_scale_lookup(int width, int newwidth)
lblockx[newwidth] = p_x;
return lblockx;
}
lblockx[newwidth] = p_x;
return lblockx;
}
-
RGBA* swf_ImageScale(RGBA*data, int width, int height, int newwidth, int newheight)
{
int x,y;
RGBA* swf_ImageScale(RGBA*data, int width, int height, int newwidth, int newheight)
{
int x,y;
@@
-1108,6
+1131,12
@@
RGBA* swf_ImageScale(RGBA*data, int width, int height, int newwidth, int newheig
if(newwidth<1 || newheight<1)
return 0;
if(newwidth<1 || newheight<1)
return 0;
+ /* this is bad because this scaler doesn't yet handle monochrome
+ images with 2 colors in a way that the final image hasn't more
+ than 256 colors */
+ if(swf_ImageGetNumberOfPaletteEntries2(data, width, height) == 2)
+ fprintf(stderr, "Warning: scaling monochrome image\n");
+
tmpline = (rgba_int_t*)malloc(width*sizeof(rgba_int_t));
newdata = (RGBA*)malloc(newwidth*newheight*sizeof(RGBA));
tmpline = (rgba_int_t*)malloc(width*sizeof(rgba_int_t));
newdata = (RGBA*)malloc(newwidth*newheight*sizeof(RGBA));