fixed grayscale bug

diff --git a/src/jpeg2swf.c b/src/jpeg2swf.c
index 3d5e54c..a9a413c 100644 (file)
--- a/src/jpeg2swf.c
+++ b/src/jpeg2swf.c
@@ -109,14 +109,30 @@ TAG * MovieAddFrame(SWF * swf,TAG * t,char * sname,int quality,int scale,int id)
   
         out = swf_SetJPEGBitsStart(t,cinfo.output_width,cinfo.output_height,quality);
         scanline = (U8*)malloc(4*cinfo.output_width);
-  
+ 
+       // the following code is a duplication of swf_SetJPEGBits in ../lib/modules/swfbits.c
         if (scanline)
         { int y;
           U8 * js = scanline;
-          for (y=0;y<cinfo.output_height;y++)
-          { jpeg_read_scanlines(&cinfo,&js,1);
-            swf_SetJPEGBitsLines(out,(U8**)&js,1);
-          }
+
+         if(cinfo.out_color_space == JCS_GRAYSCALE) 
+         {
+             for (y=0;y<cinfo.output_height;y++)
+             { int x;
+               jpeg_read_scanlines(&cinfo,&js,1);
+               for(x=cinfo.output_width-1;x>=0;x--) {
+                   js[x*3] = js[x*3+1] = js[x*3+2] = js[x];
+               }
+               swf_SetJPEGBitsLines(out,(U8**)&js,1);
+             }
+         }
+         else if(cinfo.out_color_space == JCS_RGB) 
+         {
+             for (y=0;y<cinfo.output_height;y++)
+             { jpeg_read_scanlines(&cinfo,&js,1);
+               swf_SetJPEGBitsLines(out,(U8**)&js,1);
+             }
+         }
           free(scanline);
         }