From fbff71da1a048b5bcb1bb0a048931babf318aaa4 Mon Sep 17 00:00:00 2001
From: kramm <kramm>
Date: Tue, 11 May 2004 17:10:17 +0000
Subject: [PATCH] fixed a bug which appeared when the first line was encoded
 using a PaethPredictor.

---
 src/png2swf.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/png2swf.c b/src/png2swf.c
index fe46551..989e3ba 100644
--- a/src/png2swf.c
+++ b/src/png2swf.c
@@ -542,6 +542,8 @@ TAG *MovieAddFrame(SWF * swf, TAG * t, char *sname, int id)
 	int transparent=0;
 	int semitransparent=0;
 	/* in case for mode 2, the following also performs 24->32 bit conversion */
+	unsigned char* firstline = malloc(header.width*4);
+
 	for(y=0;y<header.height;y++) {
 	    int mode = imagedata[pos++]; //filter mode
 	    U8*src;
@@ -560,8 +562,8 @@ TAG *MovieAddFrame(SWF * swf, TAG * t, char *sname, int id)
 	    }
 
 	    if(!y) {
-		memset(data2,0,header.width*4);
-		old = &data2[y*header.width*4];
+		old = firstline;
+		memset(old, 0, header.width*4);
 	    } else {
 		old = &data2[(y-1)*header.width*4];
 	    }
@@ -570,6 +572,7 @@ TAG *MovieAddFrame(SWF * swf, TAG * t, char *sname, int id)
 	    else if(header.mode==2)
 		applyfilter3(mode, src, old, dest, header.width);
 	}
+	free(firstline);
 
 	/* the image is now compressed and stored in data. Now let's take
 	   a look at the alpha values to determine which bitmap type we
-- 
1.7.10.4