return m;
}
+void swf_SetDefineID(TAG * tag, U16 newid)
+{
+ int oldlen = tag->len;
+ tag->len = 0;
+ swf_SetU16(tag, newid); /* set defining ID */
+ tag->len = oldlen;
+}
+
U16 swf_GetDefineID(TAG * t)
// up to SWF 4.0
{ U32 oldTagPos;
case ST_DEFINESHAPE2:
case ST_DEFINESHAPE3:
case ST_DEFINEMORPHSHAPE:
+ case ST_DEFINEEDITTEXT:
case ST_DEFINEBITS:
case ST_DEFINEBITSJPEG2:
case ST_DEFINEBITSJPEG3:
case ST_DEFINEBITSLOSSLESS2:
case ST_DEFINEBUTTON:
case ST_DEFINEBUTTON2:
- case ST_DEFINEBUTTONCXFORM:
- case ST_DEFINEBUTTONSOUND:
+ case ST_DEFINEBUTTONCXFORM: //pseudodefine
+ case ST_DEFINEBUTTONSOUND: //pseudodefine
case ST_DEFINEFONT:
case ST_DEFINEFONT2:
- case ST_DEFINEFONTINFO:
+ case ST_DEFINEFONTINFO: //pseudodefine
case ST_DEFINETEXT:
case ST_DEFINETEXT2:
case ST_DEFINESOUND:
case ST_DEFINESPRITE:
+ case ST_NAMECHARACTER: //pseudodefine
id = swf_GetU16(t);
break;
}
return id;
}
-int definingtagids[] =
+static int swf_definingtagids[] =
{ST_DEFINESHAPE,
ST_DEFINESHAPE2,
ST_DEFINESHAPE3,
};
// tags which may be used inside a sprite definition
-int spritetagids[] =
+static int swf_spritetagids[] =
{ST_SHOWFRAME,
ST_PLACEOBJECT,
ST_PLACEOBJECT2,
-1
};
+static int swf_pseudodefiningtagids[] =
+{
+ ST_DEFINEFONTINFO,
+ ST_DEFINEBUTTONCXFORM,
+ ST_DEFINEBUTTONSOUND,
+ ST_NAMECHARACTER,
+ -1
+};
+
U8 swf_isAllowedSpriteTag(TAG * tag)
{
int id = tag->id;
int t=0;
- while(spritetagids[t]>=0)
+ while(swf_spritetagids[t]>=0)
{
- if(spritetagids[t] == id)
+ if(swf_spritetagids[t] == id)
return 1;
t++;
}
{
int id = tag->id;
int t=0;
- while(definingtagids[t]>=0)
+ while(swf_definingtagids[t]>=0)
{
- if(definingtagids[t] == id)
+ if(swf_definingtagids[t] == id)
+ return 1;
+ t++;
+ }
+ return 0;
+}
+
+U8 swf_isPseudoDefiningTag(TAG * tag)
+{
+ int id = tag->id;
+ int t=0;
+ while(swf_pseudodefiningtagids[t]>=0)
+ {
+ if(swf_pseudodefiningtagids[t] == id)
return 1;
t++;
}
return depth;
}
-char* swf_GetTagName(TAG * t)
+char* swf_GetName(TAG * t)
{
char* name = 0;
U32 oldTagPos;
if(flags&PF_RATIO)
swf_GetU16(t);
if(flags&PF_NAME) {
- swf_ResetBitmask(t);
+ swf_ResetReadBits(t);
name = &t->data[swf_GetTagPos(t)];
}
}
return name;
}
+static void enumerateUsedIDs_styles(TAG * tag, void (*callback)(TAG*, int, void*), void*callback_data, int num)
+{
+ U16 count;
+ int t;
+ count = swf_GetU8(tag);
+ if(count == 0xff && num>1) // defineshape2,3 only
+ count = swf_GetU16(tag);
+
+ for(t=0;t<count;t++)
+ {
+ int type;
+ U8*pos;
+ swf_ResetReadBits(tag);
+ type = swf_GetU8(tag); //type
+ if(type == 0) {
+ if(num == 3)
+ swf_GetRGBA(tag, NULL);
+ else
+ swf_GetRGB(tag, NULL);
+ }
+ else if(type == 0x10 || type == 0x12)
+ {
+ swf_ResetReadBits(tag);
+ swf_GetMatrix(tag, NULL);
+ swf_ResetReadBits(tag);
+ swf_GetGradient(tag, NULL, /*alpha*/ num>=3?1:0);
+ }
+ else if(type == 0x40 || type == 0x41)
+ {
+ swf_ResetReadBits(tag);
+ // we made it.
+ if(tag->data[tag->pos] != 0xff ||
+ tag->data[tag->pos+1] != 0xff)
+ (callback)(tag, tag->pos, callback_data);
+
+ swf_GetU16(tag);
+ swf_ResetReadBits(tag);
+ swf_GetMatrix(tag, NULL);
+ }
+ else {
+ fprintf(stderr, "rfxswf:swftools.c Unknown fillstyle:0x%02x\n",type);
+ }
+ }
+ swf_ResetReadBits(tag);
+ count = swf_GetU8(tag); // line style array
+ if(count == 0xff)
+ count = swf_GetU16(tag);
+ for(t=0;t<count;t++)
+ {
+ swf_GetU16(tag);
+ if(num == 3)
+ swf_GetRGBA(tag, NULL);
+ else
+ swf_GetRGB(tag, NULL);
+ }
+}
+
+void enumerateUsedIDs(TAG * tag, int base, void (*callback)(TAG*, int, void*), void*callback_data)
+{
+ int num = 1;
+ swf_ResetReadBits(tag);
+ tag->pos = 0;
+ switch(tag->id)
+ {
+ case ST_DEFINEBUTTONCXFORM: {
+ int t;
+ callback(tag, tag->pos + base, callback_data);
+ for(t=0;t<4;t++) {
+ int flags;
+ callback(tag, tag->pos + base, callback_data);
+ swf_GetU16(tag); //sound id
+ flags = swf_GetU8(tag);
+ if(flags&1)
+ swf_GetU32(tag); // in point
+ if(flags&2)
+ swf_GetU32(tag); // out points
+ if(flags&4)
+ swf_GetU16(tag); // loop count
+ if(flags&8)
+ {
+ int npoints = swf_GetU8(tag);
+ int s;
+ for(s=0;s<npoints;s++)
+ {
+ swf_GetU32(tag);
+ swf_GetU16(tag);
+ swf_GetU16(tag);
+ }
+ }
+ }
+ } break;
+ case ST_DEFINEBUTTONSOUND:
+ callback(tag, tag->pos + base, callback_data); //button id
+ break;
+ case ST_PLACEOBJECT:
+ callback(tag, tag->pos + base, callback_data);
+ break;
+ case ST_PLACEOBJECT2:
+ // only if placeflaghascharacter
+ if(!(tag->data[0]&2))
+ break;
+ callback(tag, 3 + base, callback_data);
+ break;
+ case ST_REMOVEOBJECT:
+ callback(tag, tag->pos + base, callback_data);
+ break;
+ case ST_STARTSOUND:
+ callback(tag, tag->pos + base, callback_data);
+ break;
+ case ST_DEFINESPRITE: {
+ if(tag->len <= 4)
+ break; // sprite is expanded
+
+ swf_GetU16(tag); // id
+ swf_GetU16(tag); // framenum
+
+ while(1) {
+ U16 flags = swf_GetU16(tag);
+ U32 len;
+ U16 id = flags>>6;
+ TAG *tag2 = swf_InsertTag(NULL, id);
+ len = flags&0x3f;
+ if(len == 63)
+ len = swf_GetU32(tag);
+ if(id == ST_END)
+ break;
+ tag2->len = tag2->memsize = len;
+ tag2->data = malloc(len);
+ memcpy(tag2->data, &tag->data[tag->pos], len);
+ /* I never saw recursive sprites, but they are (theoretically)
+ possible, so better add base here again */
+ enumerateUsedIDs(tag2, tag->pos + base, callback, callback_data);
+ swf_DeleteTag(tag2);
+ swf_GetBlock(tag, NULL, len);
+ }
+ }
+ break;
+ case ST_DEFINEBUTTON2: // has some font ids in the button records
+ num++;
+ //fallthrough
+ case ST_DEFINEBUTTON: {
+ swf_GetU16(tag); //button id
+ if(num>1)
+ {
+ int offset;
+ swf_GetU8(tag); //flag
+ offset = swf_GetU16(tag); //offset
+ }
+ while(1)
+ {
+ U16 charid;
+ if(!swf_GetU8(tag)) //flags
+ break;
+ callback(tag, tag->pos + base, callback_data);
+ swf_GetU16(tag); //char
+ swf_GetU16(tag); //layer
+ swf_ResetReadBits(tag);
+ swf_GetMatrix(tag, NULL);
+ if(num>1) {
+ swf_ResetReadBits(tag);
+ swf_GetCXForm(tag, NULL, 1);
+ }
+ }
+ // ...
+ }
+ break;
+ case ST_DEFINEEDITTEXT: {
+ U8 flags1,flags2;
+ swf_GetU16(tag); //id
+ swf_GetRect(tag, NULL); //bounding box
+ swf_ResetReadBits(tag);
+ flags1 = swf_GetU8(tag);
+ flags2 = swf_GetU8(tag);
+ if(flags1 & 1)
+ callback(tag, tag->pos + base, callback_data);
+ }
+ break;
+ case ST_DEFINETEXT2:
+ num ++;
+ case ST_DEFINETEXT: {
+ int glyphbits, advancebits;
+ int id;
+ id = swf_GetU16(tag); //id
+ swf_GetRect(tag, NULL); //bounding box
+ swf_ResetReadBits(tag);
+ swf_GetMatrix(tag, NULL); //matrix
+ swf_ResetReadBits(tag);
+ glyphbits = swf_GetU8(tag); //glyphbits
+ advancebits = swf_GetU8(tag); //advancebits
+ while(1) {
+ U16 flags;
+ swf_ResetReadBits(tag);
+ flags = swf_GetBits(tag, 8);
+ if(!flags) break;
+ if(flags & 128) // text style record
+ {
+ swf_ResetReadBits(tag);
+ if(flags & 8) { // hasfont
+ callback(tag, tag->pos + base, callback_data);
+ id = swf_GetU16(tag);
+ }
+ if(flags & 4) { // hascolor
+ if(num==1) swf_GetRGB(tag, NULL);
+ else swf_GetRGBA(tag, NULL);
+ }
+ if(flags & 2) { //has x offset
+ swf_ResetReadBits(tag);
+ swf_GetU16(tag);
+ }
+ if(flags & 1) { //has y offset
+ swf_ResetReadBits(tag);
+ swf_GetU16(tag);
+ }
+ if(flags & 8) { //has height
+ swf_ResetReadBits(tag);
+ swf_GetU16(tag);
+ }
+ } else { // glyph record
+ int t;
+ swf_ResetReadBits(tag);
+ for(t=0;t<flags;t++) {
+ swf_GetBits(tag, glyphbits);
+ swf_GetBits(tag, advancebits);
+ }
+ }
+ }
+ break;
+ }
+ case ST_DEFINEFONTINFO:
+ callback(tag, tag->pos + base, callback_data);
+ break;
+
+ case ST_DEFINESHAPE3: // these thingies might have bitmap ids in their fillstyles
+ num++; //fallthrough
+ case ST_DEFINESHAPE2:
+ num++; //fallthrough
+ case ST_DEFINESHAPE: {
+ int fillbits;
+ int linebits;
+ int id;
+ id = swf_GetU16(tag); // id;
+ swf_GetRect(tag, NULL); // bounds
+
+ enumerateUsedIDs_styles(tag, callback, callback_data, num);
+ fillbits = swf_GetBits(tag, 4);
+ linebits = swf_GetBits(tag, 4);
+ swf_ResetReadBits(tag);
+ while(1) {
+ int flags;
+ flags = swf_GetBits(tag, 1);
+ if(!flags) { //style change
+ flags = swf_GetBits(tag, 5);
+ if(!flags)
+ break;
+ if(flags&1) { //move
+ int n = swf_GetBits(tag, 5);
+ swf_GetBits(tag, n); //x
+ swf_GetBits(tag, n); //y
+ }
+ if(flags&2) { //fill0
+ swf_GetBits(tag, fillbits);
+ }
+ if(flags&4) { //fill1
+ swf_GetBits(tag, fillbits);
+ }
+ if(flags&8) { //linestyle
+ swf_GetBits(tag, linebits);
+ }
+ if(flags&16) {
+ enumerateUsedIDs_styles(tag, callback, callback_data, num);
+ fillbits = swf_GetBits(tag, 4);
+ linebits = swf_GetBits(tag, 4);
+ }
+ } else {
+ flags = swf_GetBits(tag, 1);
+ if(flags) { //straight edge
+ int n = swf_GetBits(tag, 4) + 2;
+ if(swf_GetBits(tag, 1)) { //line flag
+ swf_GetBits(tag, n); //delta x
+ swf_GetBits(tag, n); //delta y
+ } else {
+ int v=swf_GetBits(tag, 1);
+ swf_GetBits(tag, n); //vert/horz
+ }
+ } else { //curved edge
+ int n = swf_GetBits(tag, 4) + 2;
+ swf_GetBits(tag, n);
+ swf_GetBits(tag, n);
+ swf_GetBits(tag, n);
+ swf_GetBits(tag, n);
+ }
+ }
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void callbackCount(TAG * t,int pos, void*ptr)
+{
+ (*(int*)ptr)++;
+}
+
+void callbackFillin(TAG * t,int pos, void*ptr)
+{
+ **(int**)ptr = pos;
+ (*(int**)ptr)++;
+}
+
+int swf_GetNumUsedIDs(TAG * t)
+{
+ int num = 0;
+ enumerateUsedIDs(t, 0, callbackCount, &num);
+ return num;
+}
+
+void swf_GetUsedIDs(TAG * t, int * positions)
+{
+ int * ptr = positions;
+ enumerateUsedIDs(t, 0, callbackFillin, &ptr);
+}
+
+void swf_Relocate (SWF*swf, char*bitmap)
+{
+ TAG*tag;
+ int slaveids[65536];
+ memset(slaveids, -1, sizeof(slaveids));
+ tag = swf->firstTag;
+ while(tag)
+ {
+ int num;
+ int *ptr;
+ int t;
+
+ if(swf_isDefiningTag(tag))
+ {
+ int newid;
+ int id;
+
+ id = swf_GetDefineID(tag); //own id
+
+ if(!bitmap[id]) { //free
+ newid = id;
+ }
+ else {
+ newid = 0;
+ for (t=1;t<65536;t++)
+ {
+ if(!bitmap[t])
+ {
+ newid = t;
+ break;
+ }
+ }
+ }
+ bitmap[newid] = 1;
+ slaveids[id] = newid;
+
+ swf_SetDefineID(tag, newid);
+ }
+
+ num = swf_GetNumUsedIDs(tag);
+ ptr = malloc(sizeof(int)*num);
+ swf_GetUsedIDs(tag, ptr);
+
+ for(t=0;t<num;t++) {
+ int id = GET16(&tag->data[ptr[t]]);
+ if(slaveids[id]<0) {
+ fprintf(stderr, "swf_Relocate: Mapping id never encountered before: %d\n", id);
+ return ;
+ }
+ id = slaveids[id];
+ PUT16(&tag->data[ptr[t]], id);
+ }
+ tag=tag->next;
+ }
+}
+