X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=pdf2swf%2Fswfoutput.cc;h=2161d9e3fed2e074857df4a99a4204a7030207d0;hb=602d0f0a1c8ad614029f235cc6ff38bfe26334e8;hp=b0315465c2a6408db60784827d1e125f3a41def7;hpb=21ca4231de3cd7172850802c353e4aaffad98c7b;p=swftools.git

diff --git a/pdf2swf/swfoutput.cc b/pdf2swf/swfoutput.cc
index b031546..2161d9e 100644
--- a/pdf2swf/swfoutput.cc
+++ b/pdf2swf/swfoutput.cc
@@ -35,6 +35,7 @@ int ignoredraworder=0;
 int drawonlyshapes=0;
 int jpegquality=85;
 int storeallcharacters=0;
+int enablezlib=0;
 static int flag_protected = 0;
 
 typedef unsigned char u8;
@@ -71,13 +72,15 @@ int clippos = 0;
 int CHARMIDX = 0;
 int CHARMIDY = 0;
 
-void startshape(struct swfoutput* obj);
-void starttext(struct swfoutput* obj);
-void endshape();
-void endtext();
+char fillstylechanged = 0;
+
+static void startshape(struct swfoutput* obj);
+static void starttext(struct swfoutput* obj);
+static void endshape();
+static void endtext();
 
 // matrix multiplication. changes p0
-void transform (plotxy*p0,struct swfmatrix*m)
+static void transform (plotxy*p0,struct swfmatrix*m)
 {
     double x,y;
     x = m->m11*p0->x+m->m12*p0->y;
@@ -87,19 +90,20 @@ void transform (plotxy*p0,struct swfmatrix*m)
 }
 
 // write a move-to command into the swf
-void moveto(TAG*tag, plotxy p0)
+static void moveto(TAG*tag, plotxy p0)
 {
     int rx = (int)(p0.x*20);
     int ry = (int)(p0.y*20);
-    if(rx!=swflastx || ry!=swflasty) {
+    if(rx!=swflastx || ry!=swflasty || fillstylechanged) {
       swf_ShapeSetMove (tag, shape, rx,ry);
+      fillstylechanged = 0;
     }
     swflastx=rx;
     swflasty=ry;
 }
 
 // write a line-to command into the swf
-void lineto(TAG*tag, plotxy p0)
+static void lineto(TAG*tag, plotxy p0)
 {
     int rx = ((int)(p0.x*20)-swflastx);
     int ry = ((int)(p0.y*20)-swflasty);
@@ -111,7 +115,7 @@ void lineto(TAG*tag, plotxy p0)
 }
 
 // write a spline-to command into the swf
-void splineto(TAG*tag, plotxy control,plotxy end)
+static void splineto(TAG*tag, plotxy control,plotxy end)
 {
     int cx = ((int)(control.x*20)-swflastx);
     int cy = ((int)(control.y*20)-swflasty);
@@ -121,12 +125,13 @@ void splineto(TAG*tag, plotxy control,plotxy end)
     int ey = ((int)(end.y*20)-swflasty);
     swflastx += ex;
     swflasty += ey;
-    swf_ShapeSetCurve(tag, shape, cx,cy,ex,ey);
+    if(cx || cy || ex || ey)
+	swf_ShapeSetCurve(tag, shape, cx,cy,ex,ey);
 }
 
 /* write a line, given two points and the transformation
    matrix. */
-void line(TAG*tag, plotxy p0, plotxy p1, struct swfmatrix*m)
+static void line(TAG*tag, plotxy p0, plotxy p1, struct swfmatrix*m)
 {
     transform(&p0,m);
     transform(&p1,m);
@@ -136,7 +141,7 @@ void line(TAG*tag, plotxy p0, plotxy p1, struct swfmatrix*m)
 
 /* write a cubic (!) spline. This involves calling the approximate()
    function out of spline.cc to convert it to a quadratic spline.  */
-void spline(TAG*tag,plotxy p0,plotxy p1,plotxy p2,plotxy p3,struct swfmatrix*m)
+static void spline(TAG*tag,plotxy p0,plotxy p1,plotxy p2,plotxy p3,struct swfmatrix*m)
 {
     double d;
     struct qspline q[16];
@@ -251,7 +256,7 @@ void drawpath(TAG*tag, T1_OUTLINE*outline, struct swfmatrix*m, int log)
     }
 }
 
-int colorcompare(RGBA*a,RGBA*b)
+static inline int colorcompare(RGBA*a,RGBA*b)
 {
 
     if(a->r!=b->r ||
@@ -274,7 +279,7 @@ struct chardata {
 } chardata[CHARDATAMAX];
 int chardatapos = 0;
 
-void putcharacters(TAG*tag)
+static void putcharacters(TAG*tag)
 {
     int t;
     SWFFONT font;
@@ -406,7 +411,7 @@ void putcharacters(TAG*tag)
     chardatapos = 0;
 }
 
-void putcharacter(struct swfoutput*obj, int fontid, int charid, 
+static void putcharacter(struct swfoutput*obj, int fontid, int charid, 
                     int x,int y, int size)
 {
     if(chardatapos == CHARDATAMAX)
@@ -425,7 +430,7 @@ void putcharacter(struct swfoutput*obj, int fontid, int charid,
 
 
 /* process a character. */
-void drawchar(struct swfoutput*obj, SWFFont*font, char*character, int charnr, swfmatrix*m)
+static void drawchar(struct swfoutput*obj, SWFFont*font, char*character, int charnr, swfmatrix*m)
 {
     int usefonts=1;
     if(m->m12!=0 || m->m21!=0)
@@ -450,7 +455,7 @@ void drawchar(struct swfoutput*obj, SWFFont*font, char*character, int charnr, sw
 
         if(!outline) {
          logf("<warning> Didn't find %s in current charset (%s)", 
-                 character,font->getName());
+                 FIXNULL(character),FIXNULL(font->getName()));
          return;
         }
         
@@ -465,8 +470,10 @@ void drawchar(struct swfoutput*obj, SWFFont*font, char*character, int charnr, sw
         if(shapeid<0)
             startshape(obj);
 
-        if(!lastwasfill)
+        if(!lastwasfill) {
          swf_ShapeSetStyle(tag,shape,0x8000,fillstyleid,0);
+	 fillstylechanged = 1;
+	}
         lastwasfill = 1;
 
         int lf = fill;
@@ -482,17 +489,27 @@ void swfoutput_drawpath(swfoutput*output, T1_OUTLINE*outline,
 {
     if(textid>=0)
         endtext();
+
+    /* Multiple polygons in one shape don't overlap correctly, 
+       so we better start a new shape here if the polygon is filled
+     */
+    if(shapeid>=0 && fill && !ignoredraworder) {
+	endshape();
+    }
+
     if(shapeid<0)
         startshape(output);
 
     if(lastwasfill && !fill)
     {
      swf_ShapeSetStyle(tag,shape,linestyleid,0x8000,0);
+     fillstylechanged = 1;
      lastwasfill = 0;
     }
     if(!lastwasfill && fill)
     {
      swf_ShapeSetStyle(tag,shape,0x8000,fillstyleid,0);
+     fillstylechanged = 1;
      lastwasfill = 1;
     }
 
@@ -521,7 +538,7 @@ SWFFont::SWFFont(char*name, int id, char*filename)
 
     if(!charnum) 
         return;
-    logf("<verbose> Font %s(%d): Storing %d outlines.\n", name, id, charnum);
+    logf("<verbose> Font %s(%d): Storing %d outlines.\n", FIXNULL(name), id, charnum);
 
     this->standardtablesize = 256;
     if(this->charnum < this->standardtablesize)
@@ -607,7 +624,7 @@ SWFFont::~SWFFont()
 
     if(usednum && !drawonlyshapes)
     {
-        logf("<verbose> Font %s has %d used characters",fontid, usednum);
+        logf("<verbose> Font %s has %d used characters",FIXNULL(fontid), usednum);
         TAG*ftag = swf_InsertTag(swf.firstTag,ST_DEFINEFONT);
         swf_SetU16(ftag, this->swfid);
         int initpos = swf_GetTagLen(ftag);
@@ -629,11 +646,12 @@ SWFFont::~SWFFont()
 
             swflastx=0;
             swflasty=0;
-            swf_SetU8(ftag,0x10); //0 fill bits, 0 linestyle bits
+            swf_SetU8(ftag,0x10); //1 fill bits, 0 linestyle bits
             SHAPE s;
             s.bits.fill = 1;
             s.bits.line = 0;
             swf_ShapeSetStyle(ftag,&s,0,1,0);
+	    fillstylechanged = 1;
             int lastfill = fill;
             fill = 1;
             storefont = 1;
@@ -726,7 +744,7 @@ int SWFFont::getSWFCharID(char*name, int charnr)
     if(this->standardtable && charnr>=0 && charnr < this->standardtablesize) {
 	return getSWFCharID(this->standardtable[charnr], -1);
     }
-    logf("<warning> Didn't find character '%s' in font '%s'", name, this->name);
+    logf("<warning> Didn't find character '%s' in font '%s'", FIXNULL(name), this->name);
     return 0;
 }
 
@@ -762,7 +780,7 @@ void swfoutput_setfont(struct swfoutput*obj, char*fontid, int t1id, char*filenam
     }
 
     if(t1id<0) {
-        logf("<error> internal error: t1id:%d, fontid:%s\n", t1id,fontid);
+        logf("<error> internal error: t1id:%d, fontid:%s\n", t1id,FIXNULL(fontid));
     }
     
     SWFFont*font = new SWFFont(fontid, t1id, filename);
@@ -858,7 +876,7 @@ void swfoutput_setprotected() //write PROTECT tag
   flag_protected = 1;
 }
 
-void startshape(struct swfoutput*obj)
+static void startshape(struct swfoutput*obj)
 {
   RGBA rgb;
   SRECT r;
@@ -894,7 +912,7 @@ void startshape(struct swfoutput*obj)
   lastwasfill = 0;
 }
 
-void starttext(struct swfoutput*obj)
+static void starttext(struct swfoutput*obj)
 {
   SRECT r;
   MATRIX m;
@@ -922,7 +940,7 @@ void starttext(struct swfoutput*obj)
   swflastx=swflasty=0;
 }
 
-void endshape()
+static void endshape()
 {
     if(shapeid<0) 
         return;
@@ -932,7 +950,7 @@ void endshape()
     shapeid = -1;
 }
 
-void endtext()
+static void endtext()
 {
     if(textid<0)
         return;
@@ -943,7 +961,7 @@ void endtext()
     textid = -1;
 }
 
-void endpage(struct swfoutput*obj)
+static void endpage(struct swfoutput*obj)
 {
     if(shapeid>=0)
       endshape();
@@ -990,14 +1008,20 @@ void swfoutput_destroy(struct swfoutput* obj)
      fi = 1; // stdout
     
     if(fi<=0) {
-     logf("<fatal> Could not create \"%s\". ", filename);
+     logf("<fatal> Could not create \"%s\". ", FIXNULL(filename));
      exit(1);
     }
  
     tag = swf_InsertTag(tag,ST_END);
 
-    if FAILED(swf_WriteSWF(fi,&swf)) 
-     logf("<error> WriteSWF() failed.\n");
+    if(enablezlib) {
+      if FAILED(swf_WriteSWC(fi,&swf)) 
+       logf("<error> WriteSWC() failed.\n");
+    } else {
+      if FAILED(swf_WriteSWF(fi,&swf)) 
+       logf("<error> WriteSWF() failed.\n");
+    }
+
     if(filename)
      close(fi);
     logf("<notice> SWF written\n");
@@ -1024,9 +1048,9 @@ void swfoutput_setfillcolor(swfoutput* obj, u8 r, u8 g, u8 b, u8 a)
        obj->fillrgb.g == g &&
        obj->fillrgb.b == b &&
        obj->fillrgb.a == a) return;
-
     if(shapeid>=0)
      endshape();
+
     obj->fillrgb.r = r;
     obj->fillrgb.g = g;
     obj->fillrgb.b = b;
@@ -1102,7 +1126,7 @@ void swfoutput_endclip(swfoutput*obj)
     swf_ObjectPlaceClip(cliptags[clippos],clipshapes[clippos],clipdepths[clippos],NULL,NULL,NULL,depth++);
 }
 
-void drawlink(struct swfoutput*obj, ActionTAG*, swfcoord*points);
+static void drawlink(struct swfoutput*obj, ActionTAG*,ActionTAG*, swfcoord*points, char mouseover);
 
 void swfoutput_linktourl(struct swfoutput*obj, char*url, swfcoord*points)
 {
@@ -1113,15 +1137,13 @@ void swfoutput_linktourl(struct swfoutput*obj, char*url, swfcoord*points)
     if(textid>=0)
      endtext();
     
-    actions = swf_ActionStart();
     if(opennewwindow)
-      action_GetUrl(url, "_parent");
+      actions = action_GetUrl(0, url, "_parent");
     else
-      action_GetUrl(url, "_this");
-      action_End();
-    swf_ActionEnd();
+      actions = action_GetUrl(0, url, "_this");
+    actions = action_End(actions);
     
-    drawlink(obj, actions, points);
+    drawlink(obj, actions, 0, points,0);
 }
 void swfoutput_linktopage(struct swfoutput*obj, int page, swfcoord*points)
 {
@@ -1132,15 +1154,37 @@ void swfoutput_linktopage(struct swfoutput*obj, int page, swfcoord*points)
     if(textid>=0)
      endtext();
    
-    actions = swf_ActionStart();
-      action_GotoFrame(page);
-      action_End();
-    swf_ActionEnd();
+      actions = action_GotoFrame(0, page);
+      actions = action_End(actions);
+
+    drawlink(obj, actions, 0, points,0);
+}
+void swfoutput_namedlink(struct swfoutput*obj, char*name, swfcoord*points)
+{
+    ActionTAG *actions1,*actions2;
+
+    if(shapeid>=0)
+     endshape();
+    if(textid>=0)
+     endtext();
+   
+      actions1 = action_PushString(0, "/:subtitle");
+      actions1 = action_PushString(actions1, name);
+      actions1 = action_SetVariable(actions1);
+      actions1 = action_End(actions1);
+
+      actions2 = action_PushString(0, "/:subtitle");
+      actions2 = action_PushString(actions2, "");
+      actions2 = action_SetVariable(actions2);
+      actions2 = action_End(actions2);
 
-    drawlink(obj, actions, points);
+    drawlink(obj, actions1, actions2, points,1);
+
+    swf_ActionFree(actions1);
+    swf_ActionFree(actions2);
 }
 
-void drawlink(struct swfoutput*obj, ActionTAG*actions, swfcoord*points)
+static void drawlink(struct swfoutput*obj, ActionTAG*actions1, ActionTAG*actions2, swfcoord*points, char mouseover)
 {
     RGBA rgb;
     SRECT r;
@@ -1151,6 +1195,8 @@ void drawlink(struct swfoutput*obj, ActionTAG*actions, swfcoord*points)
     int myshapeid2;
     double xmin,ymin;
     double xmax=xmin=points[0].x,ymax=ymin=points[0].y;
+    double posx = 0;
+    double posy = 0;
     int t;
     int buttonid = ++currentswfid;
     for(t=1;t<4;t++)
@@ -1160,8 +1206,18 @@ void drawlink(struct swfoutput*obj, ActionTAG*actions, swfcoord*points)
         if(points[t].x<xmin) xmin=points[t].x;
         if(points[t].y<ymin) ymin=points[t].y;
     }
+   
     p1.x=points[0].x; p1.y=points[0].y; p2.x=points[1].x; p2.y=points[1].y; 
     p3.x=points[2].x; p3.y=points[2].y; p4.x=points[3].x; p4.y=points[3].y;
+   
+    /* the following code subtracts the upper left edge from all coordinates,
+       and set's posx,posy so that ST_PLACEOBJECT is used with a matrix.
+       Necessary for preprocessing with swfcombine. */
+    posx = xmin; posy = ymin;
+    p1.x-=posx;p2.x-=posx;p3.x-=posx;p4.x-=posx;
+    p1.y-=posy;p2.y-=posy;p3.y-=posy;p4.y-=posy;
+    xmin -= posx; ymin -= posy;
+    xmax -= posx; ymax -= posy;
     
     /* shape */
     myshapeid = ++currentswfid;
@@ -1212,22 +1268,57 @@ void drawlink(struct swfoutput*obj, ActionTAG*actions, swfcoord*points)
     lineto(tag, p1);
     swf_ShapeSetEnd(tag);
 
-    tag = swf_InsertTag(tag,ST_DEFINEBUTTON);
-    swf_SetU16(tag,buttonid); //id
-    swf_ButtonSetFlags(tag, 0); //menu=no
-    swf_ButtonSetRecord(tag,0x01,myshapeid,depth,0,0);
-    swf_ButtonSetRecord(tag,0x02,myshapeid2,depth,0,0);
-    swf_ButtonSetRecord(tag,0x04,myshapeid2,depth,0,0);
-    swf_ButtonSetRecord(tag,0x08,myshapeid,depth,0,0);
-    swf_SetU8(tag,0);
-    swf_ActionSet(tag,actions);
-    swf_SetU8(tag,0);
+    if(!mouseover)
+    {
+	tag = swf_InsertTag(tag,ST_DEFINEBUTTON);
+	swf_SetU16(tag,buttonid); //id
+	swf_ButtonSetFlags(tag, 0); //menu=no
+	swf_ButtonSetRecord(tag,0x01,myshapeid,depth,0,0);
+	swf_ButtonSetRecord(tag,0x02,myshapeid2,depth,0,0);
+	swf_ButtonSetRecord(tag,0x04,myshapeid2,depth,0,0);
+	swf_ButtonSetRecord(tag,0x08,myshapeid,depth,0,0);
+	swf_SetU8(tag,0);
+	swf_ActionSet(tag,actions1);
+	swf_SetU8(tag,0);
+    }
+    else
+    {
+	tag = swf_InsertTag(tag,ST_DEFINEBUTTON2);
+	swf_SetU16(tag,buttonid); //id
+	swf_ButtonSetFlags(tag, 0); //menu=no
+	swf_ButtonSetRecord(tag,0x01,myshapeid,depth,0,0);
+	swf_ButtonSetRecord(tag,0x02,myshapeid2,depth,0,0);
+	swf_ButtonSetRecord(tag,0x04,myshapeid2,depth,0,0);
+	swf_ButtonSetRecord(tag,0x08,myshapeid,depth,0,0);
+	swf_SetU8(tag,0); // end of button records
+        swf_ButtonSetCondition(tag, BC_IDLE_OVERUP);
+	swf_ActionSet(tag,actions1);
+	if(actions2) {
+	    swf_ButtonSetCondition(tag, BC_OVERUP_IDLE);
+	    swf_ActionSet(tag,actions2);
+	    swf_SetU8(tag,0);
+	    swf_ButtonPostProcess(tag, 2);
+	} else {
+	    swf_SetU8(tag,0);
+            swf_ButtonPostProcess(tag, 1);
+	}
+    }
     
     tag = swf_InsertTag(tag,ST_PLACEOBJECT2);
-    swf_ObjectPlace(tag, buttonid, depth++,0,0,0);
+
+    if(posx!=0 || posy!=0) {
+	MATRIX m;
+	swf_GetMatrix(0,&m);
+	m.tx = (int)(posx*20);
+	m.ty = (int)(posy*20);
+	swf_ObjectPlace(tag, buttonid, depth++,&m,0,0);
+    }
+    else {
+	swf_ObjectPlace(tag, buttonid, depth++,0,0,0);
+    }
 }
 
-void drawimage(struct swfoutput*obj, int bitid, int sizex,int sizey, 
+static void drawimage(struct swfoutput*obj, int bitid, int sizex,int sizey, 
         double x1,double y1,
         double x2,double y2,
         double x3,double y3,
@@ -1252,23 +1343,28 @@ void drawimage(struct swfoutput*obj, int bitid, int sizex,int sizey,
     if(y4>ymax) ymax=y4;
     if(x4<xmin) xmin=x4;
     if(y4<ymin) ymin=y4;
-    p1.x=x1;
-    p1.y=y1;
-    p2.x=x2;
-    p2.y=y2;
-    p3.x=x3;
-    p3.y=y3;
-    p4.x=x4;
-    p4.y=y4;
+    p1.x=x1; p1.y=y1;
+    p2.x=x2; p2.y=y2;
+    p3.x=x3; p3.y=y3;
+    p4.x=x4; p4.y=y4;
+
+    {p1.x = (int)(p1.x*20)/20.0;
+     p1.y = (int)(p1.y*20)/20.0;
+     p2.x = (int)(p2.x*20)/20.0;
+     p2.y = (int)(p2.y*20)/20.0;
+     p3.x = (int)(p3.x*20)/20.0;
+     p3.y = (int)(p3.y*20)/20.0;
+     p4.x = (int)(p4.x*20)/20.0;
+     p4.y = (int)(p4.y*20)/20.0;}
     
     MATRIX m;
-    m.sx = (int)(65536*20*(x4-x1))/sizex;
-    m.r1 = -(int)(65536*20*(y4-y1))/sizex;
-    m.r0 = (int)(65536*20*(x1-x2))/sizey;
-    m.sy = -(int)(65536*20*(y1-y2))/sizey;
+    m.sx = (int)(65536*20*(p4.x-p1.x)/sizex);
+    m.r1 = -(int)(65536*20*(p4.y-p1.y)/sizex);
+    m.r0 = (int)(65536*20*(p1.x-p2.x)/sizey);
+    m.sy = -(int)(65536*20*(p1.y-p2.y)/sizey);
 
-    m.tx = (int)(x1*20);
-    m.ty = (int)(y1*20);
+    m.tx = (int)(p1.x*20);
+    m.ty = (int)(p1.y*20);
   
     /* shape */
     myshapeid = ++currentswfid;
@@ -1276,7 +1372,7 @@ void drawimage(struct swfoutput*obj, int bitid, int sizex,int sizey,
     swf_ShapeNew(&shape);
     //lsid = ShapeAddLineStyle(shape,obj->linewidth,&obj->strokergb);
     //fsid = ShapeAddSolidFillStyle(shape,&obj->fillrgb);
-    fsid = swf_ShapeAddBitmapFillStyle(shape,&m,bitid,0);
+    fsid = swf_ShapeAddBitmapFillStyle(shape,&m,bitid,1);
     swf_SetU16(tag, myshapeid);
     r.xmin = (int)(xmin*20);
     r.ymin = (int)(ymin*20);
@@ -1306,7 +1402,7 @@ void drawimage(struct swfoutput*obj, int bitid, int sizex,int sizey,
     swf_ObjectPlace(tag,myshapeid,/*depth*/depth++,NULL,NULL,NULL);
 }
 
-int swfoutput_drawimagejpeg(struct swfoutput*obj, char*filename, int sizex,int sizey, 
+int swfoutput_drawimagejpeg_old(struct swfoutput*obj, char*filename, int sizex,int sizey, 
         double x1,double y1,
         double x2,double y2,
         double x3,double y3,
@@ -1332,6 +1428,29 @@ int swfoutput_drawimagejpeg(struct swfoutput*obj, char*filename, int sizex,int s
     return bitid;
 }
 
+int swfoutput_drawimagejpeg(struct swfoutput*obj, RGBA*mem, int sizex,int sizey, 
+        double x1,double y1,
+        double x2,double y2,
+        double x3,double y3,
+        double x4,double y4)
+{
+    TAG*oldtag;
+    JPEGBITS*jpeg;
+
+    if(shapeid>=0)
+     endshape();
+    if(textid>=0)
+     endtext();
+
+    int bitid = ++currentswfid;
+    oldtag = tag;
+    tag = swf_InsertTag(tag,ST_DEFINEBITSJPEG2);
+    swf_SetU16(tag, bitid);
+    swf_SetJPEGBits2(tag,sizex,sizey,mem,jpegquality);
+    drawimage(obj, bitid, sizex, sizey, x1,y1,x2,y2,x3,y3,x4,y4);
+    return bitid;
+}
+
 int swfoutput_drawimagelossless(struct swfoutput*obj, RGBA*mem, int sizex,int sizey, 
         double x1,double y1,
         double x2,double y2,
@@ -1358,27 +1477,46 @@ int swfoutput_drawimagelossless(struct swfoutput*obj, RGBA*mem, int sizex,int si
     return bitid;
 }
 
-int swfoutput_drawimagelossless256(struct swfoutput*obj, U8*mem, RGBA*pal, int sizex,int sizey, 
+int swfoutput_drawimagelosslessN(struct swfoutput*obj, U8*mem, RGBA*pal, int sizex,int sizey, 
         double x1,double y1,
         double x2,double y2,
         double x3,double y3,
-        double x4,double y4)
+        double x4,double y4, int n)
 {
     TAG*oldtag;
+    U8*mem2 = 0;
     if(shapeid>=0)
      endshape();
     if(textid>=0)
      endtext();
 
+    if(sizex&3)
+    { 
+	/* SWF expects scanlines to be 4 byte aligned */
+	int x,y;
+	U8*ptr;
+	mem2 = (U8*)malloc(BYTES_PER_SCANLINE(sizex)*sizey);
+	ptr = mem2;
+	for(y=0;y<sizey;y++)
+	{
+	    for(x=0;x<sizex;x++)
+		*ptr++ = mem[y*sizex+x];
+	    ptr+= BYTES_PER_SCANLINE(sizex)-sizex;
+	}
+	mem = mem2;
+    }
+
     int bitid = ++currentswfid;
     oldtag = tag;
     tag = swf_InsertTag(tag,ST_DEFINEBITSLOSSLESS2);
     swf_SetU16(tag, bitid);
-    if(swf_SetLosslessBitsIndexed(tag,sizex,sizey,mem, pal, 256)<0) {
+    if(swf_SetLosslessBitsIndexed(tag,sizex,sizey,mem, pal, n)<0) {
 	swf_DeleteTag(tag);
 	tag = oldtag;
 	return -1;
     }
+    if(mem2)
+	free(mem2);
   
     drawimage(obj, bitid, sizex, sizey, x1,y1,x2,y2,x3,y3,x4,y4);
     return bitid;