flash9 tags implementation

[swftools.git] / lib / rfxswf.c

diff --git a/lib/rfxswf.c b/lib/rfxswf.c
index 29a13ea..adbdc5a 100644 (file)
--- a/lib/rfxswf.c
+++ b/lib/rfxswf.c
@@ -82,9 +82,18 @@ void swf_SetTagPos(TAG * t,U32 pos)
 
 char* swf_GetString(TAG*t)
 {
-    char* str = ((char*)(&(t)->data[(t)->pos]));
-    while(swf_GetU8(t));
-    return str;
+    int pos = t->pos;
+    while(t->pos < t->len && swf_GetU8(t));
+    /* make sure we always have a trailing zero byte */
+    if(t->pos == t->len) {
+      if(t->len == t->memsize) {
+       swf_ResetWriteBits(t);
+       swf_SetU8(t, 0);
+       t->len = t->pos;
+      }
+      t->data[t->len] = 0;
+    }
+    return (char*)&(t->data[pos]);
 }
 
 U8 swf_GetU8(TAG * t)
@@ -251,6 +260,31 @@ int swf_SetBits(TAG * t,U32 v,int nbits)
 
 // Advanced Data Access Functions
 
+double swf_GetFixed(TAG * t)
+{
+  U16 low =  swf_GetU16(t);
+  U16 high = swf_GetU16(t);
+  return high + low*(1/65536.0);
+}
+void swf_SetFixed(TAG * t, double f)
+{
+  U16 fr = (f-(int)f)*65536;
+  swf_SetU16(t, fr);
+  swf_SetU16(t, (U16)f - (f<0 && fr!=0));
+}
+float swf_GetFixed8(TAG * t)
+{
+  U8 low =  swf_GetU8(t);
+  U8 high = swf_GetU8(t);
+  return high + low*(1/256.0);
+}
+void swf_SetFixed8(TAG * t, float f)
+{
+  U8 fr = (f-(int)f)*256;
+  swf_SetU8(t, fr);
+  swf_SetU8(t, (U8)f - (f<0 && fr!=0));
+}
+
 int swf_SetRGB(TAG * t,RGBA * col)
 { if (!t) return -1;
   if (col)
@@ -300,19 +334,24 @@ void swf_GetGradient(TAG * tag, GRADIENT * gradient, char alpha)
       memset(gradient, 0, sizeof(GRADIENT));
       return;
     }
-    if(!gradient)
-       gradient = &dummy;
-    gradient->num = swf_GetU8(tag);
-    for(t=0;t<gradient->num;t++)
+    U8 num = swf_GetU8(tag) & 15;
+    if(gradient) {
+       gradient->num = num;
+       gradient->rgba = rfx_calloc(sizeof(RGBA)*gradient->num);
+       gradient->ratios = rfx_calloc(sizeof(gradient->ratios[0])*gradient->num);
+    }
+    for(t=0;t<num;t++)
     {
-       int s=t;
-       if(s>=8) //FIXME
-           s=7;
-       gradient->ratios[t] = swf_GetU8(tag);
+       U8 ratio = swf_GetU8(tag);
+       RGBA color;
        if(!alpha)
-           swf_GetRGB(tag, &gradient->rgba[t]);
+           swf_GetRGB(tag, &color);
        else
-           swf_GetRGBA(tag, &gradient->rgba[t]);
+           swf_GetRGBA(tag, &color);
+       if(gradient) {
+         gradient->ratios[t] = ratio;
+         gradient->rgba[t] = color;
+       }
     }
 }
 
@@ -334,6 +373,15 @@ void swf_SetGradient(TAG * tag, GRADIENT * gradient, char alpha)
     }
 }
 
+void swf_FreeGradient(GRADIENT* gradient)
+{
+  if(gradient->ratios)
+    rfx_free(gradient->ratios);
+  if(gradient->rgba)
+    rfx_free(gradient->rgba);
+  memset(gradient, 0, sizeof(GRADIENT));
+}
+
 int swf_CountUBits(U32 v,int nbits)
 { int n = 32;
   U32 m = 0x80000000;
@@ -1248,6 +1296,29 @@ int  swf_WriteSWF2(writer_t*writer, SWF * swf)     // Writes SWF to file, return
 
 #endif // INSERT_RFX_TAG
 
+  if(swf->fileVersion >= 9) {
+    if ((!swf->firstTag || swf->firstTag->id != ST_SCENEDESCRIPTION) &&
+       (!swf->firstTag || 
+        !swf->firstTag->next || swf->firstTag->next->id != ST_SCENEDESCRIPTION) &&
+       (!swf->firstTag || 
+        !swf->firstTag->next || 
+        !swf->firstTag->next->next || swf->firstTag->next->next->id != ST_SCENEDESCRIPTION))
+    {
+       TAG*scene = swf_InsertTagBefore(swf, swf->firstTag,ST_SCENEDESCRIPTION);
+       swf_SetU16(scene, 1);
+       swf_SetString(scene, "Scene 1");
+       swf_SetU8(scene, 0);
+    }
+  }
+  
+  if(swf->fileVersion >= 9) {
+      if (swf->firstTag && swf->firstTag->id != ST_FILEATTRIBUTES)
+      {
+         U32 flags = 0x8; // | 128 = usenetwork, | 16 = Actionscript3 | 8 = hasmetadata
+         swf_SetU32(swf_InsertTagBefore(swf, swf->firstTag,ST_FILEATTRIBUTES),flags);
+      }
+  }
+
   // Count Frames + File Size
 
   len = 0;
@@ -1461,6 +1532,8 @@ void swf_FreeTags(SWF * swf)                 // Frees all malloc'ed memory for t
 #include "modules/swfcgi.c"
 #include "modules/swfbits.c"
 #include "modules/swfaction.c"
+#include "modules/swfabc.c"
 #include "modules/swfsound.c"
 #include "modules/swfdraw.c"
 #include "modules/swfrender.c"
+#include "modules/swffilter.c"