added support for hardware-gpu & accelerated-blit header flags

[swftools.git] / lib / rfxswf.c

diff --git a/lib/rfxswf.c b/lib/rfxswf.c
index b063cc0..d601a15 100644 (file)
--- a/lib/rfxswf.c
+++ b/lib/rfxswf.c
@@ -1470,6 +1470,7 @@ int swf_ReadSWF2(reader_t*reader, SWF * swf)   // Reads SWF to memory (malloc'ed
     swf->frameCount = SWAP16(swf->frameCount);
 
     /* read tags and connect to list */
+    t1.next = 0;
     t = &t1;
     while (t) {
       t = swf_ReadTag(reader,t);
@@ -1479,7 +1480,8 @@ int swf_ReadSWF2(reader_t*reader, SWF * swf)   // Reads SWF to memory (malloc'ed
       }
     }
     swf->firstTag = t1.next;
-    t1.next->prev = NULL;
+    if(t1.next)
+      t1.next->prev = NULL;
   }
   
   return reader->pos;
@@ -1559,8 +1561,19 @@ int WriteExtraTags(SWF*swf, writer_t*writer)
             }
             swf_DeleteTag(0, fileattrib);
         } else {
-            if(swf_WriteTag2(writer, has_fileattributes)<0) 
-                return -1;
+           if(swf->fileAttributes) {
+             /* if we're writing a file out again where we might have possible
+                modified the fileattributes in the header, adjust the tag data */
+             TAG*tt = swf_CopyTag(0,has_fileattributes);
+             U32 flags = swf_GetU32(tt) | swf->fileAttributes;
+             swf_ResetTag(tt, tt->id);
+             swf_SetU32(tt, flags);
+             if(swf_WriteTag2(writer, has_fileattributes)<0) return -1;
+             swf_DeleteTag(0, tt);
+           } else {
+               if(swf_WriteTag2(writer, has_fileattributes)<0) 
+                   return -1;
+           }
         }
         if(0 && !has_scenedescription) {
             TAG*scene = swf_InsertTag(0, ST_SCENEDESCRIPTION);
@@ -1709,6 +1722,21 @@ int  swf_WriteSWF2(writer_t*writer, SWF * swf)     // Writes SWF to file, return
   }
 }
 
+int swf_SaveSWF(SWF * swf, char*filename)
+{
+    int fi = open(filename, O_BINARY|O_RDWR|O_TRUNC|O_CREAT, 0777);
+    if(fi<0) {
+        perror(filename);
+        return 0;
+    }
+    if(swf_WriteSWF(fi, swf)<0) {
+        fprintf(stderr, "Unable to write output file: %s\n", filename);
+        return 0;
+    }
+    close(fi);
+    return 1;
+}
+
 int  swf_WriteSWF(int handle, SWF * swf)     // Writes SWF to file, returns length or <0 if fails
 {
   writer_t writer;