swfvideo.o is now compiled separately.

[swftools.git] / lib / rfxswf.c

diff --git a/lib/rfxswf.c b/lib/rfxswf.c
index 0ac5266..ae14268 100644 (file)
--- a/lib/rfxswf.c
+++ b/lib/rfxswf.c
@@ -16,13 +16,10 @@
 
 #include "rfxswf.h"
 
-#ifdef HAVE_LIBJPEG
-#ifdef HAVE_JPEGLIB_H
+#ifdef HAVE_JPEGLIB
 #define HAVE_BOOLEAN
 #include <jpeglib.h>
-#define _JPEGLIB_INCLUDED_
-#endif // HAVE_JPEGLIB_H
-#endif // HAVE_LIBJPEG
+#endif // HAVE_JPEGLIB
 
 #ifdef HAVE_ZLIB
 #include <zlib.h>
@@ -253,7 +250,7 @@ int swf_SetRGB(TAG * t,RGBA * col)
 void swf_GetRGB(TAG * t, RGBA * col)
 {
     RGBA dummy;
-    if(!col);
+    if(!col)
        col = &dummy;
     col->r = swf_GetU8(t);
     col->g = swf_GetU8(t);
@@ -302,22 +299,35 @@ void swf_GetGradient(TAG * tag, GRADIENT * gradient, char alpha)
     }
 }
 
+int swf_CountUBits(U32 v,int nbits)
+{ int n = 32;
+  U32 m = 0x80000000;
+  if(v == 0x00000000) n = 0; 
+  else
+    while (!(v&m))
+    { n--;
+      m>>=1;
+    } 
+  return (n>nbits)?n:nbits;
+}
+
 int swf_CountBits(U32 v,int nbits)
 { int n = 33;
   U32 m = 0x80000000;
-  if (!v) n = 0; else
   if (v&m)
-  { while (v&m)
+  { if(v == 0xffffffff) n = 1;
+    else 
+    while (v&m)
     { n--;
       m>>=1;
-      if (!m) break;
     } 
   }
   else
-  { while (!(v&m))
+  { if(v == 0x00000000) n = 0; 
+    else
+    while (!(v&m))
     { n--;
       m>>=1;
-      if (!m) break;
     } 
   }
   return (n>nbits)?n:nbits;
@@ -643,6 +653,30 @@ TAG * swf_InsertTag(TAG * after,U16 id)     // updates frames, if nescessary
   return t;
 }
 
+TAG * swf_InsertTagBefore(SWF* swf, TAG * before,U16 id)     // updates frames, if nescessary
+{ TAG * t;
+
+  t = (TAG *)malloc(sizeof(TAG));
+  if (t)
+  { memset(t,0x00,sizeof(TAG));
+    t->id = id;
+    
+    if (before)
+    { t->frame = before->frame;
+      t->next  = before;
+      t->prev  = before->prev;
+      before->prev = t;
+      if (t->prev) t->prev->next = t;
+      
+      if (id==ST_SHOWFRAME) swf_UpdateFrame(t->next,+1);
+    }
+  }
+  if(swf && swf->firstTag == before) {
+    swf->firstTag = t;
+  }
+  return t;
+}
+
 void swf_ClearTag(TAG * t)
 {
   if (t->data) free(t->data);
@@ -654,6 +688,12 @@ void swf_ClearTag(TAG * t)
   t->memsize = 0;
 }
 
+void swf_ResetTag(TAG*tag, U16 id)
+{
+    tag->len = tag->pos = tag->readBit = tag->writeBit = 0;
+    tag->id = id;
+}
+
 int swf_DeleteTag(TAG * t)
 { if (!t) return -1;
 
@@ -1116,29 +1156,37 @@ int  swf_WriteSWF2(struct writer_t*writer, SWF * swf)     // Writes SWF to file,
       swf_SetU16(&t2, swf->frameCount);
       l = swf_GetTagLen(&t2)+8;
     }
+    if(swf->compressed == 8) {
+      l -= 8;
+    }
 
     fileSize = l+len;
     if(len) {// don't touch headers without tags
        swf->fileSize = fileSize;
        swf->frameCount = frameCount;
     }
-   
-    if(swf->compressed) {
-      char*id = "CWS";
-      writer->write(writer, id, 3);
-    }
-    else {
-      char*id = "FWS";
-      writer->write(writer, id, 3);
-    }
 
-    writer->write(writer, &swf->fileVersion, 1);
-    PUT32(b4, swf->fileSize);
-    writer->write(writer, b4, 4);
+    if(swf->compressed != 8) {
+    /* compressed flag set to 8 means "skip first 8 
+       header bytes". This is necessary if the caller wants to
+       create compressed SWFs himself */
+      if(swf->compressed) {
+       char*id = "CWS";
+       writer->write(writer, id, 3);
+      }
+      else {
+       char*id = "FWS";
+       writer->write(writer, id, 3);
+      }
 
-    if(swf->compressed) {
-      writer_init_zlibdeflate(&zwriter, writer);
-      writer = &zwriter;
+      writer->write(writer, &swf->fileVersion, 1);
+      PUT32(b4, swf->fileSize);
+      writer->write(writer, b4, 4);
+      
+      if(swf->compressed) {
+       writer_init_zlibdeflate(&zwriter, writer);
+       writer = &zwriter;
+      }
     }
 
     swf_SetRect(&t1,&swf->movieSize);
@@ -1163,7 +1211,8 @@ int  swf_WriteSWF2(struct writer_t*writer, SWF * swf)     // Writes SWF to file,
       { if (swf_WriteTag2(writer, t)<0) return -1;
         t = swf_NextTag(t);
       }
-      writer->finish(writer); //e.g. flush zlib buffers
+      if(swf->compressed != 8)
+       writer->finish(writer); // flush zlib buffers - only if _we_ initialized that writer.
     }
   }
   return (int)fileSize;
@@ -1173,8 +1222,10 @@ int  swf_WriteSWF(int handle, SWF * swf)     // Writes SWF to file, returns leng
 {
   struct writer_t writer;
   swf->compressed = 0;
-  if(handle<0)
+  if(handle<0) {
+    writer_init_nullwriter(&writer);
     return swf_WriteSWF2(&writer, swf);
+  }
   writer_init_filewriter(&writer, handle);
   return swf_WriteSWF2(&writer, swf);
 }
@@ -1183,8 +1234,10 @@ int  swf_WriteSWC(int handle, SWF * swf)     // Writes SWF to file, returns leng
 {
   struct writer_t writer;
   swf->compressed = 1;
-  if(handle<0)
+  if(handle<0) {
+    writer_init_nullwriter(&writer);
     return swf_WriteSWF2(&writer, swf);
+  }
   writer_init_filewriter(&writer, handle);
   return swf_WriteSWF2(&writer, swf);
 }
@@ -1246,4 +1299,3 @@ void swf_FreeTags(SWF * swf)                 // Frees all malloc'ed memory for t
 #include "modules/swfbits.c"
 #include "modules/swfaction.c"
 #include "modules/swfsound.c"
-