fixed a bug in swf_ExtractImage() for 8-bit palette lossless images

diff --git a/lib/modules/swfbits.c b/lib/modules/swfbits.c
index f238503..bc1e0f8 100644 (file)
--- a/lib/modules/swfbits.c
+++ b/lib/modules/swfbits.c
@@ -801,6 +801,8 @@ RGBA *swf_DefineLosslessBitsTagToImage(TAG * tag, int *dwidth, int *dheight)
            palette[t].b = data[pos++];
            if (alpha) {
                palette[t].a = data[pos++];
+           } else {
+               palette[t].a = 255;
            }
        }
     }
@@ -820,7 +822,11 @@ RGBA *swf_DefineLosslessBitsTagToImage(TAG * tag, int *dwidth, int *dheight)
                }
            } else {
                for (x = 0; x < width; x++) {
-                   /* TODO: un-premultiply alpha? */
+                   /* TODO: premultiply alpha? 
+                   dest[pos2].r = (data[pos + 1]*255)/data[pos+0];
+                   dest[pos2].g = (data[pos + 2]*255)/data[pos+0];
+                   dest[pos2].b = (data[pos + 3]*255)/data[pos+0];
+                   */
                    dest[pos2].r = data[pos + 1];
                    dest[pos2].g = data[pos + 2];
                    dest[pos2].b = data[pos + 3];