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DEFINITIONS
This source file includes following definitions.
- swf_ShapeFree
- swf_ShapeNew
- swf_GetSimpleShape
- swf_SetSimpleShape
- swf_SetFillStyle
- swf_SetLineStyle
- swf_SetShapeStyleCount
- swf_SetShapeStyles
- swf_ShapeCountBits
- swf_SetShapeBits
- swf_SetShapeHeader
- swf_ShapeAddFillStyle
- swf_ShapeAddFillStyle2
- swf_ShapeAddSolidFillStyle
- swf_ShapeAddBitmapFillStyle
- swf_ShapeAddGradientFillStyle
- swf_ShapeAddLineStyle
- swf_ShapeSetMove
- swf_ShapeSetStyle
- swf_ShapeSetAll
- swf_ShapeSetEnd
- swf_ShapeSetLine
- swf_ShapeSetCurve
- swf_ShapeSetCircle
- dummycallback1
- parseFillStyle
- parseFillStyleArray
- swf_ShapeIsEmpty
- swf_ParseShapeData
- swf_GetShapeBoundingBox
- swf_Shape2Free
- swf_Shape2Clone
- swf_ShapeToShape2
- swf_ShapeSetBitmapRect
- swf_ShapeSetRectangle
- swf_ShapeSetRectangleWithBorder
- swf_Shape2ToShape
- swf_SetShape2
- swf_ParseDefineShape
- free_lines
- swf_RecodeShapeData
/* swfshape.c
shape functions
Extension module for the rfxswf library.
Part of the swftools package.
Copyright (c) 2001 Rainer Böhme <rfxswf@reflex-studio.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "../rfxswf.h"
#define SF_MOVETO 0x01
#define SF_FILL0 0x02
#define SF_FILL1 0x04
#define SF_LINE 0x08
#define SF_NEWSTYLE 0x10
void swf_ShapeFree(SHAPE * s)
{
if(!s)
return;
if (s->linestyle.data) rfx_free(s->linestyle.data);
s->linestyle.data = NULL;
s->linestyle.n = 0;
if (s->fillstyle.data) rfx_free(s->fillstyle.data);
s->fillstyle.data = NULL;
s->fillstyle.n = 0;
if (s->data) rfx_free(s->data);
s->data = NULL;
rfx_free(s);
}
int swf_ShapeNew(SHAPE * * s)
{
SHAPE * sh;
if (!s) return -1;
sh = (SHAPE *)rfx_calloc(sizeof(SHAPE));
*s = sh;
return 0;
}
int swf_GetSimpleShape(TAG * t,SHAPE * * s) // without Linestyle/Fillstyle Record
{ SHAPE * sh;
int bitl, len;
int end;
U32 pos;
if (FAILED(swf_ShapeNew(s))) return -1;
sh = s[0];
swf_ResetReadBits(t);
sh->bits.fill = (U16)swf_GetBits(t,4);
sh->bits.line = (U16)swf_GetBits(t,4);
bitl = 0; end = 0; pos = swf_GetTagPos(t);
while (!end)
{ int edge = swf_GetBits(t,1); bitl+=1;
if (edge)
{ bitl+=1;
if (swf_GetBits(t,1)) // Line
{ U16 nbits = swf_GetBits(t,4)+2;
bitl+=5;
if (swf_GetBits(t,1)) // x/y Line
{ swf_GetBits(t,nbits);
swf_GetBits(t,nbits);
bitl+=nbits*2;
}
else // hline/vline
{ swf_GetBits(t,nbits+1);
bitl+=nbits+1;
}
}
else // Curve
{ U16 nbits = swf_GetBits(t,4)+2;
bitl+=4;
swf_GetBits(t,nbits);
swf_GetBits(t,nbits);
swf_GetBits(t,nbits);
swf_GetBits(t,nbits);
bitl+=4*nbits;
}
}
else
{ U16 flags = swf_GetBits(t,5); bitl+=5;
if (flags)
{
if (flags&SF_MOVETO)
{ U16 nbits = swf_GetBits(t,5); bitl+=5;
swf_GetBits(t,nbits);
swf_GetBits(t,nbits);
bitl+=2*nbits;
}
if (flags&SF_FILL0)
{ swf_GetBits(t,sh->bits.fill);
bitl+=sh->bits.fill;
}
if (flags&SF_FILL1)
{ swf_GetBits(t,sh->bits.fill);
bitl+=sh->bits.fill;
}
if (flags&SF_LINE)
{ swf_GetBits(t,sh->bits.line);
bitl+=sh->bits.line;
}
if (flags&SF_NEWSTYLE)
{ fprintf(stderr,"RFXSWF: Can't process extended styles in shape.\n");
}
}
else end = 1;
}
}
swf_SetTagPos(t,pos);
len = (bitl+7)/8;
if (sh->data) rfx_free(sh->data);
sh->data = (U8*)rfx_alloc(len);
if (sh->data)
{ sh->bitlen = bitl;
swf_GetBlock(t,sh->data,len);
}
else return -1;
return len;
}
int swf_SetSimpleShape(TAG * t,SHAPE * s) // without Linestyle/Fillstyle Record
{ int l;
if (!s) return -1;
l = (s->bitlen+7)/8;
if (t)
{ swf_ResetWriteBits(t);
swf_SetBits(t,s->bits.fill,4);
swf_SetBits(t,s->bits.line,4);
swf_SetBlock(t,s->data,l);
swf_ResetWriteBits(t);
}
return l+1;
}
int swf_SetFillStyle(TAG * t,FILLSTYLE * f)
{ if ((!t)||(!f)) return -1;
swf_SetU8(t,f->type);
switch (f->type)
{ case FILL_SOLID:
if (swf_GetTagID(t)!=ST_DEFINESHAPE3) swf_SetRGB(t,&f->color);
else swf_SetRGBA(t,&f->color);
break;
case FILL_TILED:
case FILL_CLIPPED:
swf_SetU16(t,f->id_bitmap);
swf_SetMatrix(t,&f->m);
break;
case FILL_LINEAR:
case FILL_RADIAL:
swf_SetMatrix(t,&f->m);
swf_SetGradient(t,&f->gradient,/*alpha?*/t->id==ST_DEFINESHAPE3?1:0);
break;
}
return 0;
}
int swf_SetLineStyle(TAG * t,LINESTYLE * l)
{ if ((!l)||(!t)) return -1;
swf_SetU16(t,l->width);
if (swf_GetTagID(t)!=ST_DEFINESHAPE3) swf_SetRGB(t,&l->color);
else swf_SetRGBA(t,&l->color);
return 0;
}
int swf_SetShapeStyleCount(TAG * t,U16 n)
{ if (n>254)
{ swf_SetU8(t,0xff);
swf_SetU16(t,n);
return 3;
}
else
{ swf_SetU8(t,(U8)n);
return 1;
}
}
int swf_SetShapeStyles(TAG * t,SHAPE * s)
{ int i,l;
if (!s) return -1;
l = 0;
l += swf_SetShapeStyleCount(t,s->fillstyle.n);
for (i=0;i<s->fillstyle.n;i++)
l+=swf_SetFillStyle(t,&s->fillstyle.data[i]);
l += swf_SetShapeStyleCount(t,s->linestyle.n);
for (i=0;i<s->linestyle.n;i++)
l+=swf_SetLineStyle(t,&s->linestyle.data[i]);
return l;
}
int swf_ShapeCountBits(SHAPE * s,U8 * fbits,U8 * lbits)
{ if (!s) return -1;
s->bits.fill = swf_CountUBits(s->fillstyle.n, 0);
s->bits.line = swf_CountUBits(s->linestyle.n, 0);
if (fbits) fbits[0] = s->bits.fill;
if (lbits) lbits[0] = s->bits.line;
return 0;
}
int swf_SetShapeBits(TAG * t,SHAPE * s)
{ if ((!t)||(!s)) return -1;
swf_ResetWriteBits(t);
swf_SetBits(t,s->bits.fill,4);
swf_SetBits(t,s->bits.line,4);
return 0;
}
int swf_SetShapeHeader(TAG * t,SHAPE * s)
{ int res;
res = swf_SetShapeStyles(t,s);
if (res>=0) res = swf_ShapeCountBits(s,NULL,NULL);
if (res>=0) res = swf_SetShapeBits(t,s);
return res;
}
int swf_ShapeAddFillStyle(SHAPE * s,U8 type,MATRIX * m,RGBA * color,U16 id_bitmap, GRADIENT*gradient)
{ RGBA def_c;
MATRIX def_m;
GRADIENT def_g;
// handle defaults
if (!s) return -1;
if (!color)
{ color = &def_c;
def_c.a = 0xff;
def_c.r = def_c.g = def_c.b = 0;
}
if (!m)
{ m = &def_m;
swf_GetMatrix(NULL,m);
}
if(!gradient)
{
gradient = &def_g;
swf_GetGradient(NULL, gradient, 1);
}
// handle memory
if (s->fillstyle.data)
{ FILLSTYLE * xnew = (FILLSTYLE *)rfx_realloc(s->fillstyle.data,(s->fillstyle.n+1)*sizeof(FILLSTYLE));
if (!xnew) return -1;
s->fillstyle.data = xnew;
}
else
{ s->fillstyle.data = (FILLSTYLE *)rfx_alloc(sizeof(FILLSTYLE));
s->fillstyle.n = 0;
if (!s->fillstyle.data) return -1;
}
// set fillstyle
s->fillstyle.data[s->fillstyle.n].type = type;
s->fillstyle.data[s->fillstyle.n].id_bitmap = id_bitmap;
memcpy(&s->fillstyle.data[s->fillstyle.n].m,m,sizeof(MATRIX));
memcpy(&s->fillstyle.data[s->fillstyle.n].color,color,sizeof(RGBA));
memcpy(&s->fillstyle.data[s->fillstyle.n].gradient,gradient,sizeof(GRADIENT));
return (++s->fillstyle.n);
}
int swf_ShapeAddFillStyle2(SHAPE * s,FILLSTYLE*fs)
{
return swf_ShapeAddFillStyle(s, fs->type, &fs->m, &fs->color, fs->id_bitmap, &fs->gradient);
}
int swf_ShapeAddSolidFillStyle(SHAPE * s,RGBA * color)
{ return swf_ShapeAddFillStyle(s,FILL_SOLID,NULL,color,0,0);
}
int swf_ShapeAddBitmapFillStyle(SHAPE * s,MATRIX * m,U16 id_bitmap,int clip)
{ return swf_ShapeAddFillStyle(s,clip?FILL_CLIPPED:FILL_TILED,m,NULL,id_bitmap,0);
}
int swf_ShapeAddGradientFillStyle(SHAPE * s,MATRIX * m,GRADIENT* gradient,int radial)
{ return swf_ShapeAddFillStyle(s,radial?FILL_RADIAL:FILL_LINEAR,m,NULL,0,gradient);
}
int swf_ShapeAddLineStyle(SHAPE * s,U16 width,RGBA * color)
{ RGBA def;
if (!s) return -1;
if (!color)
{ color = &def;
def.a = 0xff;
def.r = def.g = def.b = 0;
}
if (s->linestyle.data)
{ LINESTYLE * xnew = (LINESTYLE *)rfx_realloc(s->linestyle.data,(s->linestyle.n+1)*sizeof(LINESTYLE));
if (!xnew) return -1;
s->linestyle.data = xnew;
}
else
{ s->linestyle.data = (LINESTYLE *)rfx_alloc(sizeof(LINESTYLE));
s->linestyle.n = 0;
if (!s->linestyle.data) return -1;
}
s->linestyle.data[s->linestyle.n].width = width;
memcpy(&s->linestyle.data[s->linestyle.n].color,color,sizeof(RGBA));
return (++s->linestyle.n);
}
int swf_ShapeSetMove(TAG * t,SHAPE * s,S32 x,S32 y)
{ U8 b;
if (!t) return -1;
swf_SetBits(t,0,1);
swf_SetBits(t,SF_MOVETO,5);
b = swf_CountBits(x,0);
b = swf_CountBits(y,b);
if(b>31) {
fprintf(stderr, "Warning: bad moveTo (%f,%f)\n", x/20.0, y/20.0);
b=31;
}
swf_SetBits(t,b,5);
swf_SetBits(t,x,b);
swf_SetBits(t,y,b);
return 0;
}
int swf_ShapeSetStyle(TAG * t,SHAPE * s,int line,int fill0,int fill1)
{ if ((!t)||(!s)) return -1;
swf_SetBits(t,0,1);
swf_SetBits(t,(line?SF_LINE:0)|(fill0?SF_FILL0:0)|(fill1?SF_FILL1:0),5);
if (fill0) swf_SetBits(t,fill0,s->bits.fill);
if (fill1) swf_SetBits(t,fill1,s->bits.fill);
if (line) swf_SetBits(t,line ,s->bits.line);
return 0;
}
/* TODO: sometimes we want to set fillstyle 0, as that's the empty fill
used for line drawings. At the moment, we can't, as 0 fill be considered
nonexistent and therefore not set.
these defines are a workaround (they also reduce the maximal number of
fill styles to 32768)
*/
#define UNDEFINED_COORD 0x7fffffff
int swf_ShapeSetAll(TAG * t,SHAPE * s,S32 x,S32 y,int line,int fill0,int fill1)
{ U8 b;
U8 hasmove = 0;
if ((!t)||(!s)) return -1;
if(x!=UNDEFINED_COORD || y!=UNDEFINED_COORD)
hasmove=1;
swf_SetBits(t,0,1);
swf_SetBits(t,(hasmove?SF_MOVETO:0)|(line?SF_LINE:0)|(fill0?SF_FILL0:0)|(fill1?SF_FILL1:0),5);
if(hasmove) {
b = swf_CountBits(x,0);
b = swf_CountBits(y,b);
swf_SetBits(t,b,5);
swf_SetBits(t,x,b);
swf_SetBits(t,y,b);
}
if (fill0) swf_SetBits(t,fill0,s->bits.fill);
if (fill1) swf_SetBits(t,fill1,s->bits.fill);
if (line) swf_SetBits(t,line ,s->bits.line);
return 0;
}
int swf_ShapeSetEnd(TAG * t)
{ if (!t) return -1;
swf_SetBits(t,0,6);
swf_ResetWriteBits(t);
return 0;
}
int swf_ShapeSetLine(TAG * t,SHAPE * s,S32 x,S32 y)
{
U8 b;
if (!t) return -1;
b = swf_CountBits(x,2);
b = swf_CountBits(y,b);
if (b<2) b=2;
if(b >= 18) {
if(b > 18 + 6) {
/* do not split into more than 64 segments. If the line is *that* long, something's broken */
fprintf(stderr, "Warning: Line to %.2f,%.2f is too long (%d bits)\n", (double)x,(double)y, b);
return -1;
} else {
/* split line */
int x1,y1,x2,y2;
if(x>=0) { x1 = x/2;x2 = (x+1)/2;}
else { x1 = x/2;x2 = (x-1)/2;}
if(y>=0) { y1 = y/2;y2 = (y+1)/2;}
else { y1 = y/2;y2 = (y-1)/2;}
swf_ShapeSetLine(t, s, x1,y1);
swf_ShapeSetLine(t, s, x2,y2);
return 0;
}
}
if(x!=0 && y!=0) { //(!s)||((x!=0)&&(y!=0)))
swf_SetBits(t,3,2); // Straight Edge
swf_SetBits(t, b-2, 4); //Number of Bits in x/y
swf_SetBits(t,1,1); // Diagonal
swf_SetBits(t,x,b);
swf_SetBits(t,y,b);
} else if (x==0) {
swf_SetBits(t,3,2); // Straight Edge
swf_SetBits(t, b-2, 4); //Number of Bits in y
swf_SetBits(t,1,2); // Vertical
swf_SetBits(t,y,b);
} else {
swf_SetBits(t,3,2); // Straight Edge
swf_SetBits(t, b-2, 4); //Number of Bits in x
swf_SetBits(t,0,2); // Horizontal
swf_SetBits(t,x,b);
}
return 0;
}
int swf_ShapeSetCurve(TAG * t,SHAPE * s,S32 x,S32 y,S32 ax,S32 ay)
{
U8 b;
if (!t) return -1;
b = swf_CountBits(ax,2);
b = swf_CountBits(ay,b);
b = swf_CountBits(x,b);
b = swf_CountBits(y,b);
if(b >= 18) {
fprintf(stderr, "Bit overflow in swf_ShapeSetCurve- %d (%d,%d,%d,%d)\n", b, ax,ay,x,y);
return swf_ShapeSetLine(t, s, x+ax, y+ay);
}
swf_SetBits(t,2,2);
swf_SetBits(t,b-2,4);
swf_SetBits(t,x,b);
swf_SetBits(t,y,b);
swf_SetBits(t,ax,b);
swf_SetBits(t,ay,b);
return 0;
}
int swf_ShapeSetCircle(TAG * t,SHAPE * s,S32 x,S32 y,S32 rx,S32 ry)
{ double C1 = 0.2930;
double C2 = 0.4140;
double begin = 0.7070;
if (!t) return -1;
swf_ShapeSetMove(t,s,x+begin*rx,y+begin*ry);
swf_ShapeSetCurve(t,s, -C1*rx, C1*ry, -C2*rx, 0);
swf_ShapeSetCurve(t,s, -C2*rx, 0, -C1*rx, -C1*ry);
swf_ShapeSetCurve(t,s, -C1*rx, -C1*ry, 0, -C2*ry);
swf_ShapeSetCurve(t,s, 0, -C2*ry, C1*rx, -C1*ry);
swf_ShapeSetCurve(t,s, C1*rx, -C1*ry, C2*rx, 0);
swf_ShapeSetCurve(t,s, C2*rx, 0, C1*rx, C1*ry);
swf_ShapeSetCurve(t,s, C1*rx, C1*ry, 0, C2*ry);
swf_ShapeSetCurve(t,s, 0, C2*ry, -C1*rx, C1*ry);
return 0;
}
void dummycallback1(TAG*tag, int x, void*y)
{
}
// from swftools.c:
void enumerateUsedIDs_styles(TAG * tag, void (*callback)(TAG*, int, void*), void*callback_data, int num, int morph);
static void parseFillStyle(FILLSTYLE*dest, TAG*tag, int num)
{
int type = swf_GetU8(tag); //type
dest->type = type;
if(type == 0) {
/* plain color */
if(num >= 3)
swf_GetRGBA(tag, &dest->color);
else
swf_GetRGB(tag, &dest->color);
}
else if(type == 0x10 || type == 0x11 || type == 0x12 || type == 0x13)
{
/* linear/radial gradient fill */
swf_ResetReadBits(tag);
swf_GetMatrix(tag, &dest->m);
swf_ResetReadBits(tag);
swf_GetGradient(tag, &dest->gradient, num>=3?1:0);
if(type == 0x13)
swf_GetU16(tag);
}
else if(type == 0x40 || type == 0x41 || type == 0x42 || type == 0x43)
{
/* bitmap fill */
swf_ResetReadBits(tag);
dest->id_bitmap = swf_GetU16(tag); //id
swf_ResetReadBits(tag); //?
swf_GetMatrix(tag, &dest->m);
}
else {
fprintf(stderr, "rfxswf:swfshape.c Unknown fillstyle:0x%02x in tag %02d\n",type, tag->id);
}
}
static int parseFillStyleArray(TAG*tag, SHAPE2*shape)
{
U16 count;
int t;
int num=0;
int fillstylestart = shape->numfillstyles;
int linestylestart = shape->numlinestyles;
if(tag->id == ST_DEFINESHAPE)
num = 1;
else if(tag->id == ST_DEFINESHAPE2)
num = 2;
else if(tag->id == ST_DEFINESHAPE3)
num = 3;
else if(tag->id == ST_DEFINESHAPE4)
num = 4;
count = swf_GetU8(tag);
if(count == 0xff && num>1) // defineshape2,3 only
count = swf_GetU16(tag);
shape->numfillstyles += count;
if(shape->numfillstyles) {
shape->fillstyles = (FILLSTYLE*)rfx_realloc(shape->fillstyles, sizeof(FILLSTYLE)*shape->numfillstyles);
for(t=fillstylestart;t<shape->numfillstyles;t++) {
parseFillStyle(&shape->fillstyles[t], tag, num);
}
}
swf_ResetReadBits(tag);
count = swf_GetU8(tag); // line style array
if(count == 0xff)
count = swf_GetU16(tag);
shape->numlinestyles += count;
if(count) {
shape->linestyles = (LINESTYLE*)rfx_realloc(shape->linestyles, sizeof(LINESTYLE)*shape->numlinestyles);
/* TODO: should we start with 1 and insert a correct definition of the
"built in" linestyle 0? */
for(t=linestylestart;t<shape->numlinestyles;t++)
{
char fill = 0;
shape->linestyles[t].width = swf_GetU16(tag);
if(num >= 4) {
U16 flags = swf_GetU16(tag);
if((flags & 0x30) == 0x20)
swf_GetU16(tag); // miter limit
if(flags & 0x08) {
fprintf(stderr, "Warning: Filled strokes parsing not yet fully supported\n");
fill = 1;
}
}
if(fill) {
FILLSTYLE f;
parseFillStyle(&f, tag, num);
shape->linestyles[t].color = f.color;
} else {
if(num >= 3)
swf_GetRGBA(tag, &shape->linestyles[t].color);
else
swf_GetRGB(tag, &shape->linestyles[t].color);
}
}
}
return 1;
}
char swf_ShapeIsEmpty(SHAPE*s)
{
if(!s || !s->data) return 1;
TAG _tag;
TAG* tag = &_tag;
memset(tag, 0, sizeof(TAG));
tag->data = s->data;
tag->len = tag->memsize = (s->bitlen+7)/8;
tag->pos = 0;
while(1) {
if(!swf_GetBits(tag, 1)) {
U16 flags = swf_GetBits(tag, 5);
if(!flags) break;
if(flags&1) { //move
int n = swf_GetBits(tag, 5);
swf_GetSBits(tag, n); //x
swf_GetSBits(tag, n); //y
}
if(flags&2) swf_GetBits(tag, s->bits.fill);
if(flags&4) swf_GetBits(tag, s->bits.fill);
if(flags&8) swf_GetBits(tag, s->bits.line);
if(flags&16) {return 0;}
} else {
return 0;
}
}
return 1;
}
/* todo: merge this with swf_GetSimpleShape */
static SHAPELINE* swf_ParseShapeData(U8*data, int bits, int fillbits, int linebits, int version, SHAPE2*shape2)
{
SHAPELINE _lines;
SHAPELINE*lines = &_lines;
TAG _tag;
TAG* tag = &_tag;
int fill0 = 0;
int fill1 = 0;
int line = 0;
int x=0,y=0;
int linestyleadd=0;
int fillstyleadd=0;
memset(tag, 0, sizeof(TAG));
tag->data = data;
tag->len = tag->memsize = (bits+7)/8;
tag->pos = 0;
tag->id = version==1?ST_DEFINESHAPE:(version==2?ST_DEFINESHAPE2:(version==3?ST_DEFINESHAPE3:ST_DEFINESHAPE4));
lines->next = 0;
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);
x = swf_GetSBits(tag, n); //x
y = swf_GetSBits(tag, n); //y
}
if(flags&2)
fill0 = swf_GetBits(tag, fillbits) + fillstyleadd;
if(flags&4)
fill1 = swf_GetBits(tag, fillbits) + fillstyleadd;
if(flags&8)
line = swf_GetBits(tag, linebits) + linestyleadd;
if(flags&16) {
if(!shape2) {
fprintf(stderr, "rfxswf: Error: Additional fillstyles not supported\n");fflush(stderr);
enumerateUsedIDs_styles(tag, dummycallback1, 0, version, 0);
} else {
linestyleadd = shape2->numlinestyles;
fillstyleadd = shape2->numfillstyles;
if(!parseFillStyleArray(tag, shape2))
return 0;
}
fillbits = swf_GetBits(tag, 4);
linebits = swf_GetBits(tag, 4);
}
if(flags&1) { //move
lines->next = (SHAPELINE*)rfx_alloc(sizeof(SHAPELINE));
lines = lines->next;
lines->type = moveTo;
lines->x = x;
lines->y = y;
lines->sx = lines->sy = 0;
lines->fillstyle0 = fill0;
lines->fillstyle1 = fill1;
lines->linestyle = line;
lines->next = 0;
}
} else {
flags = swf_GetBits(tag, 1);
if(flags) { //straight edge
int n = swf_GetBits(tag, 4) + 2;
if(swf_GetBits(tag, 1)) { //line flag
x += swf_GetSBits(tag, n); //delta x
y += swf_GetSBits(tag, n); //delta y
} else {
int v=swf_GetBits(tag, 1);
int d;
d = swf_GetSBits(tag, n); //vert/horz
if(v) y += d;
else x += d;
}
lines->next = (SHAPELINE*)rfx_alloc(sizeof(SHAPELINE));
lines = lines->next;
lines->type = lineTo;
lines->x = x;
lines->y = y;
lines->sx = lines->sy = 0;
lines->fillstyle0 = fill0;
lines->fillstyle1 = fill1;
lines->linestyle = line;
lines->next = 0;
} else { //curved edge
int n = swf_GetBits(tag, 4) + 2;
int x1,y1;
x += swf_GetSBits(tag, n);
y += swf_GetSBits(tag, n);
x1 = x;
y1 = y;
x += swf_GetSBits(tag, n);
y += swf_GetSBits(tag, n);
lines->next = (SHAPELINE*)rfx_alloc(sizeof(SHAPELINE));
lines = lines->next;
lines->type = splineTo;
lines->sx = x1;
lines->sy = y1;
lines->x = x;
lines->y = y;
lines->fillstyle0 = fill0;
lines->fillstyle1 = fill1;
lines->linestyle = line;
lines->next = 0;
}
}
}
return _lines.next;
}
SRECT swf_GetShapeBoundingBox(SHAPE2*shape2)
{
SRECT r;
SHAPELINE*l = shape2->lines;
int lastx=0,lasty=0;
int valid = 0;
r.xmin = r.ymin = SCOORD_MAX;
r.xmax = r.ymax = SCOORD_MIN;
while(l) {
int t1;
if(l->linestyle>0) {
t1 = shape2->linestyles[l->linestyle - 1].width*3/2;
} else {
t1 = 0;
}
if(l->type == lineTo || l->type == splineTo)
{
valid = 1;
if(lastx - t1 < r.xmin) r.xmin = lastx - t1;
if(lasty - t1 < r.ymin) r.ymin = lasty - t1;
if(lastx + t1 > r.xmax) r.xmax = lastx + t1;
if(lasty + t1 > r.ymax) r.ymax = lasty + t1;
if(l->x - t1 < r.xmin) r.xmin = l->x - t1;
if(l->y - t1 < r.ymin) r.ymin = l->y - t1;
if(l->x + t1 > r.xmax) r.xmax = l->x + t1;
if(l->y + t1 > r.ymax) r.ymax = l->y + t1;
if(l->type == splineTo) {
if(l->sx - t1 < r.xmin) r.xmin = l->sx - t1;
if(l->sy - t1 < r.ymin) r.ymin = l->sy - t1;
if(l->sx + t1 > r.xmax) r.xmax = l->sx + t1;
if(l->sy + t1 > r.ymax) r.ymax = l->sy + t1;
}
}
lastx = l->x;
lasty = l->y;
l = l->next;
}
if(!valid) memset(&r, 0, sizeof(SRECT));
return r;
}
void swf_Shape2Free(SHAPE2 * s)
{
SHAPELINE*line = s->lines;
s->lines = 0;
while(line) {
SHAPELINE*next = line->next;
line->next = 0;
rfx_free(line);
line = next;
}
if(s->linestyles) {
rfx_free(s->linestyles);
s->linestyles = 0;
}
if(s->fillstyles) {
rfx_free(s->fillstyles);
s->fillstyles = 0;
}
if(s->bbox) {
rfx_free(s->bbox);
s->bbox = 0;
}
}
SHAPE2* swf_Shape2Clone(SHAPE2 * s)
{
SHAPELINE*line = s->lines;
SHAPELINE*prev = 0;
SHAPE2*s2 = (SHAPE2*)rfx_alloc(sizeof(SHAPE2));
memcpy(s2,s,sizeof(SHAPE2));
s2->linestyles = (LINESTYLE*)rfx_alloc(sizeof(LINESTYLE)*s->numlinestyles);
memcpy(s2->linestyles, s->linestyles, sizeof(LINESTYLE)*s->numlinestyles);
s2->fillstyles = (FILLSTYLE*)rfx_alloc(sizeof(FILLSTYLE)*s->numfillstyles);
memcpy(s2->fillstyles, s->fillstyles, sizeof(FILLSTYLE)*s->numfillstyles);
while(line) {
SHAPELINE*line2 = (SHAPELINE*)rfx_alloc(sizeof(SHAPELINE));
memcpy(line2, line, sizeof(SHAPELINE));
line2->next = 0;
if(prev)
prev->next = line2;
else
s2->lines = line2;
prev = line2;
line = line->next;
}
if(s->bbox) {
s2->bbox = (SRECT*)rfx_alloc(sizeof(SRECT));
memcpy(s2->bbox, s->bbox, sizeof(SRECT));
}
return s2;
}
SHAPE2* swf_ShapeToShape2(SHAPE*shape) {
SHAPE2*shape2 = (SHAPE2*)rfx_calloc(sizeof(SHAPE2));
shape2->numlinestyles = shape->linestyle.n;
if(shape2->numlinestyles) {
shape2->linestyles = (LINESTYLE*)rfx_alloc(sizeof(LINESTYLE)*shape->linestyle.n);
memcpy(shape2->linestyles, shape->linestyle.data, sizeof(LINESTYLE)*shape->linestyle.n);
}
shape2->numfillstyles = shape->fillstyle.n;
if(shape2->numfillstyles) {
shape2->fillstyles = (FILLSTYLE*)rfx_alloc(sizeof(FILLSTYLE)*shape->fillstyle.n);
memcpy(shape2->fillstyles, shape->fillstyle.data, sizeof(FILLSTYLE)*shape->fillstyle.n);
}
shape2->lines = swf_ParseShapeData(shape->data, shape->bitlen, shape->bits.fill, shape->bits.line, 1, 0);
shape2->bbox = 0;
return shape2;
};
void swf_ShapeSetBitmapRect(TAG*tag, U16 gfxid, int width, int height)
{
SHAPE*shape;
MATRIX m;
RGBA rgb;
SRECT r;
int lines = 0;
int ls=0,fs;
swf_ShapeNew(&shape);
rgb.b = rgb.g = rgb.r = 0xff;
if(lines)
ls = swf_ShapeAddLineStyle(shape,20,&rgb);
swf_GetMatrix(NULL,&m);
m.sx = 20*65536;
m.sy = 20*65536;
fs = swf_ShapeAddBitmapFillStyle(shape,&m,gfxid,0);
r.xmin = 0;
r.ymin = 0;
r.xmax = width*20;
r.ymax = height*20;
swf_SetRect(tag,&r);
swf_SetShapeStyles(tag,shape);
swf_ShapeCountBits(shape,NULL,NULL);
swf_SetShapeBits(tag,shape);
swf_ShapeSetAll(tag,shape,0,0,lines?ls:0,fs,0);
swf_ShapeSetLine(tag,shape,width*20,0);
swf_ShapeSetLine(tag,shape,0,height*20);
swf_ShapeSetLine(tag,shape,-width*20,0);
swf_ShapeSetLine(tag,shape,0,-height*20);
swf_ShapeSetEnd(tag);
swf_ShapeFree(shape);
}
void swf_ShapeSetRectangle(TAG*tag, U16 shapeid, int width, int height, RGBA*rgba)
{
RGBA white={255,255,255,255};
if(!rgba) {
rgba = &white;
}
SHAPE* s;
swf_ShapeNew(&s);
int fs = swf_ShapeAddSolidFillStyle(s, rgba);
swf_SetU16(tag,shapeid);
SRECT r;
r.xmin = 0;
r.xmax = 0;
r.ymin = width;
r.ymax = height;
swf_SetRect(tag,&r);
swf_SetShapeHeader(tag,s);
swf_ShapeSetAll(tag,s,0,0,0,fs,0);
swf_ShapeSetLine(tag,s,width,0);
swf_ShapeSetLine(tag,s,0,height);
swf_ShapeSetLine(tag,s,-width,0);
swf_ShapeSetLine(tag,s,0,-height);
swf_ShapeSetEnd(tag);
swf_ShapeFree(s);
}
void swf_ShapeSetRectangleWithBorder(TAG*tag, U16 shapeid, int width, int height, RGBA*rgba, int linewidth, RGBA*linecolor)
{
RGBA white={255,255,255,255};
if(!rgba) {
rgba = &white;
}
SHAPE* s;
swf_ShapeNew(&s);
int fs = swf_ShapeAddSolidFillStyle(s, rgba);
int ls = swf_ShapeAddLineStyle(s, linewidth, linecolor);
swf_SetU16(tag,shapeid);
SRECT r;
r.xmin = 0;
r.xmax = 0;
r.ymin = width;
r.ymax = height;
swf_SetRect(tag,&r);
swf_SetShapeHeader(tag,s);
swf_ShapeSetAll(tag,s,0,0,ls,fs,0);
swf_ShapeSetLine(tag,s,width,0);
swf_ShapeSetLine(tag,s,0,height);
swf_ShapeSetLine(tag,s,-width,0);
swf_ShapeSetLine(tag,s,0,-height);
swf_ShapeSetEnd(tag);
swf_ShapeFree(s);
}
void swf_Shape2ToShape(SHAPE2*shape2, SHAPE*shape)
{
TAG*tag = swf_InsertTag(0,0);
SHAPELINE*l;
int newx=0,newy=0,lastx=0,lasty=0,oldls=0,oldfs0=0,oldfs1=0;
memset(shape, 0, sizeof(SHAPE));
shape->linestyle.n = shape2->numlinestyles;
shape->linestyle.data = (LINESTYLE*)rfx_alloc(sizeof(LINESTYLE)*shape->linestyle.n);
memcpy(shape->linestyle.data, shape2->linestyles, sizeof(LINESTYLE)*shape->linestyle.n);
shape->fillstyle.n = shape2->numfillstyles;
shape->fillstyle.data = (FILLSTYLE*)rfx_alloc(sizeof(FILLSTYLE)*shape->fillstyle.n);
memcpy(shape->fillstyle.data, shape2->fillstyles, sizeof(FILLSTYLE)*shape->fillstyle.n);
swf_ShapeCountBits(shape,NULL,NULL);
l = shape2->lines;
while(l) {
int ls=0,fs0=0,fs1=0;
if(l->type != moveTo) {
if(oldls != l->linestyle) {oldls = ls = l->linestyle;if(!ls) ls=0x8000;}
if(oldfs0 != l->fillstyle0) {oldfs0 = fs0 = l->fillstyle0;if(!fs0) fs0=0x8000;}
if(oldfs1 != l->fillstyle1) {oldfs1 = fs1 = l->fillstyle1;if(!fs1) fs1=0x8000;}
if(ls || fs0 || fs1 || newx!=0x7fffffff || newy!=0x7fffffff) {
swf_ShapeSetAll(tag,shape,newx,newy,ls,fs0,fs1);
newx = 0x7fffffff;
newy = 0x7fffffff;
}
}
if(l->type == lineTo) {
swf_ShapeSetLine(tag,shape,l->x-lastx,l->y-lasty);
} else if(l->type == splineTo) {
swf_ShapeSetCurve(tag,shape, l->sx-lastx,l->sy-lasty, l->x-l->sx,l->y-l->sy);
}
if(l->type == moveTo) {
newx = l->x;
newy = l->y;
}
lastx = l->x;
lasty = l->y;
l = l->next;
}
swf_ShapeSetEnd(tag);
shape->data = tag->data;
shape->bitlen = tag->len*8;
free(tag);
}
void swf_SetShape2(TAG*tag, SHAPE2*shape2)
{
SHAPE shape;
swf_Shape2ToShape(shape2, &shape);
swf_SetRect(tag,shape2->bbox);
swf_SetShapeStyles(tag, &shape);
//swf_ShapeCountBits(&shape,NULL,NULL); // done in swf_Shape2ToShape()
swf_SetShapeBits(tag,&shape);
swf_SetBlock(tag, shape.data, (shape.bitlen+7)/8);
}
void swf_ParseDefineShape(TAG*tag, SHAPE2*shape)
{
int num = 0, id;
U16 fill,line;
SHAPELINE*l;
if(tag->id == ST_DEFINESHAPE)
num = 1;
else if(tag->id == ST_DEFINESHAPE2)
num = 2;
else if(tag->id == ST_DEFINESHAPE3)
num = 3;
else if(tag->id == ST_DEFINESHAPE4)
num = 4;
else {
fprintf(stderr, "parseDefineShape must be called with a shape tag");
}
swf_SetTagPos(tag, 0);
id = swf_GetU16(tag); //id
memset(shape, 0, sizeof(SHAPE2));
shape->bbox = (SRECT*)rfx_alloc(sizeof(SRECT));
swf_GetRect(tag, shape->bbox);
if(num>=4) {
SRECT r2;
swf_ResetReadBits(tag);
swf_GetRect(tag, &r2); // edge bounds
U8 flags = swf_GetU8(tag); // flags, &1: contains scaling stroke, &2: contains non-scaling stroke
}
if(!parseFillStyleArray(tag, shape)) {
return;
}
swf_ResetReadBits(tag);
fill = (U16)swf_GetBits(tag,4);
line = (U16)swf_GetBits(tag,4);
if(!fill && !line) {
fprintf(stderr, "fill/line bits are both zero\n");
}
shape->lines = swf_ParseShapeData(&tag->data[tag->pos], (tag->len - tag->pos)*8, fill, line, num, shape);
l = shape->lines;
}
static void free_lines(SHAPELINE* lines)
{
if (lines->next)
free_lines(lines->next);
free(lines);
}
void swf_RecodeShapeData(U8*data, int bitlen, int in_bits_fill, int in_bits_line,
U8**destdata, U32*destbitlen, int out_bits_fill, int out_bits_line)
{
SHAPE2 s2;
SHAPE s;
SHAPELINE*line;
memset(&s2, 0, sizeof(s2));
s2.lines = swf_ParseShapeData(data, bitlen, in_bits_fill, in_bits_line, 1, 0);
s2.numfillstyles = out_bits_fill?1<<(out_bits_fill-1):0;
s2.numlinestyles = out_bits_line?1<<(out_bits_line-1):0;
s2.fillstyles = (FILLSTYLE*)rfx_calloc(sizeof(FILLSTYLE)*s2.numfillstyles);
s2.linestyles = (LINESTYLE*)rfx_calloc(sizeof(LINESTYLE)*s2.numlinestyles);
line = s2.lines;
while(line) {
if(line->fillstyle0 > s2.numfillstyles) line->fillstyle0 = 0;
if(line->fillstyle1 > s2.numfillstyles) line->fillstyle1 = 0;
if(line->linestyle > s2.numlinestyles) line->linestyle = 0;
line = line->next;
}
swf_Shape2ToShape(&s2,&s);
free_lines(s2.lines);
free(s2.fillstyles);
free(s2.linestyles);
free(s.fillstyle.data);
free(s.linestyle.data);
*destdata = s.data;
*destbitlen = s.bitlen;
}