From 4cc2227e383358d13c984a7cfa6e7a920450cf16 Mon Sep 17 00:00:00 2001
From: kramm <kramm>
Date: Mon, 2 Feb 2004 08:24:31 +0000
Subject: [PATCH] new function swf_RelocateDepth().

---
 lib/modules/swftools.c |   58 +++++++++++++++++++++++++++++++++++++++++++++---
 lib/rfxswf.h           |    3 ++-
 2 files changed, 57 insertions(+), 4 deletions(-)

diff --git a/lib/modules/swftools.c b/lib/modules/swftools.c
index 3041337..3618ad9 100644
--- a/lib/modules/swftools.c
+++ b/lib/modules/swftools.c
@@ -292,10 +292,9 @@ U8 swf_isPseudoDefiningTag(TAG * tag)
     return 0; 
 }
 
-U16 swf_GetDepth(TAG * t)
-// up to SWF 4.0
+int swf_GetDepth(TAG * t)
 { 
-  U16 depth = 0;
+  int depth = -1;
   U32 oldTagPos;
   oldTagPos = swf_GetTagPos(t);
   swf_SetTagPos(t,0);
@@ -313,11 +312,36 @@ U16 swf_GetDepth(TAG * t)
     { U8 flags = swf_GetU8(t);
       depth = swf_GetU16(t);
     } break;
+    case ST_SETTABINDEX:
+    {
+      depth = swf_GetU16(t);
+    }
   }
   swf_SetTagPos(t,oldTagPos);
   return depth;
 }
 
+void swf_SetDepth(TAG * t, U16 depth)
+{ 
+  switch (swf_GetTagID(t))
+  { case ST_PLACEOBJECT:
+    case ST_REMOVEOBJECT:
+      PUT16(t->data, depth);
+      break;
+    case ST_REMOVEOBJECT2:
+      PUT16(t->data, depth);
+      break;
+    case ST_PLACEOBJECT2:
+      PUT16(&t->data[1], depth);
+      break;
+    case ST_SETTABINDEX:
+      PUT16(t->data, depth);
+      break;
+    default:
+      fprintf(stderr, "rfxswf: Error: tag %d has no depth\n", t->id);
+  }
+}
+
 char* swf_GetName(TAG * t)
 {
     char* name = 0;
@@ -831,4 +855,32 @@ void swf_Relocate (SWF*swf, char*bitmap)
 	tag=tag->next;
     }
 }
+
+void swf_RelocateDepth(SWF*swf, char*bitmap)
+{
+    TAG*tag;
+    tag = swf->firstTag;
+    int nr;
+    for(nr=65535;nr>=0;nr--) {
+	if(bitmap[nr] != 0) 
+	    break;
+    }
+    // now nr is the highest used depth. So we start
+    // assigning depths at nr+1
+    nr++;
+
+    while(tag)
+    {
+	int depth = swf_GetDepth(tag);
+	if(depth>=0) {
+	    int newdepth = depth+nr;
+	    if(newdepth>65535) {
+		fprintf(stderr, "Couldn't relocate depths: too large values\n");
+		newdepth = 65535;
+	    }
+	    swf_SetDepth(tag, newdepth);
+	}
+	tag=tag->next;
+    }
+}
 	
diff --git a/lib/rfxswf.h b/lib/rfxswf.h
index 0291e11..01b85f9 100644
--- a/lib/rfxswf.h
+++ b/lib/rfxswf.h
@@ -723,7 +723,7 @@ U16 swf_GetDefineID(TAG * t);
 SRECT swf_GetDefineBBox(TAG * t);
 void swf_SetDefineID(TAG * t, U16 newid);
 U16 swf_GetPlaceID(TAG * t); //PLACEOBJECT, PLACEOBJECT2 (sometimes), REMOVEOBJECT
-U16 swf_GetDepth(TAG * t); //PLACEOBJECT,PLACEOBJECT2,REMOVEOBJECT,REMOVEOBJECT2
+int swf_GetDepth(TAG * t); //PLACEOBJECT,PLACEOBJECT2,REMOVEOBJECT,REMOVEOBJECT2,SETTABINDEX
 char* swf_GetName(TAG * t); //PLACEOBJECT2, FRAMELABEL
 MATRIX * swf_MatrixJoin(MATRIX * d,MATRIX * s1,MATRIX * s2);
 MATRIX * swf_MatrixMapTriangle(MATRIX * m,int dx,int dy,
@@ -731,6 +731,7 @@ MATRIX * swf_MatrixMapTriangle(MATRIX * m,int dx,int dy,
 int swf_GetNumUsedIDs(TAG * t);
 void swf_GetUsedIDs(TAG * t, int * positions);
 void swf_Relocate(SWF*swf, char*bitmap); // bitmap is 65536 bytes, bitmap[a]==0 means id a is free
+void swf_RelocateDepth(SWF*swf, char*bitmap); // bitmap is 65536 bytes, bitmap[d]==0 means depth d is free
 
 // swfcgi.c
 
-- 
1.7.10.4