compile pdf2swf with xpdf's wordlist support

[swftools.git] / lib / rfxswf.c

diff --git a/lib/rfxswf.c b/lib/rfxswf.c
index b063cc0..f6353a3 100644 (file)
--- a/lib/rfxswf.c
+++ b/lib/rfxswf.c
@@ -406,6 +406,34 @@ int swf_SetU30String(TAG*tag, const char*str, int l)
     swf_SetBlock(tag, (void*)str, l);
     return len;
 }
+float swf_GetF16(TAG * t)
+{
+    // D16 is 1-5-10
+    // D32 is 1-8-23
+    U16 f1 = swf_GetU16(t);
+    if(!f1) return 0;
+    U32 f2 = (f1&0x8000)<<16; //sign
+    f2 |= ((f1&0x7c00)<<13)+(0x40000000-(0x4000<<13)); //exp
+    f2 |= (f1&0x03ff)<<13; //mantissa
+    return *(float*)&f2;
+}
+void swf_SetF16(TAG * t, float f)
+{
+    U32 f1 = *(U32*)&f;
+    U16 f2 = (f1>>16)&0x8000;
+    int exp = ((f1>>23)&0xff)-0x80+0x10;
+    if(exp<0) {
+       exp = 0;
+       fprintf(stderr, "Exponent underflow in FLOAT16 encoding\n");
+    } else if(exp>=32) {
+       exp = 31;
+       fprintf(stderr, "Exponent overflow in FLOAT16 encoding\n");
+    }
+    f2 |= exp<<10;
+    f2 |= (f1>>13)&0x3ff;
+    swf_SetU16(t, f2);
+}
+
 double swf_GetD64(TAG*tag)
 {
     /* FIXME: this is not big-endian compatible */
@@ -949,7 +977,7 @@ void  swf_SetPassword(TAG * t, const char * password)
     md5string = crypt_md5(password, salt);
 
     swf_SetU16(t,0);
-    swf_SetString(t, (U8*)md5string);
+    swf_SetString(t, md5string);
 } 
 
 void swf_SetString(TAG*t, const char* s) 
@@ -957,7 +985,7 @@ void swf_SetString(TAG*t, const char* s)
     if(!s) {
         swf_SetU8(t, 0);
     } else {
-        swf_SetBlock(t,s,strlen(s)+1);
+        swf_SetBlock(t,(U8*)s,strlen(s)+1);
     }
 }
 
@@ -1470,6 +1498,7 @@ 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 +1508,8 @@ 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;
@@ -1559,13 +1589,24 @@ 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);
             swf_SetU16(scene, 1);
-            swf_SetString(scene, (U8*)"Scene 1");
+            swf_SetString(scene, "Scene 1");
             swf_SetU8(scene, 0);
             if(writer) {
                 if(swf_WriteTag2(writer, scene)<0) 
@@ -1709,6 +1750,21 @@ 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;