/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- MovieStart
- MovieFinish
- png_read_chunk
- png_get_dword
- png_read_header
- PaethPredictor
- applyfilter3
- applyfilter4
- applyfilter1
- PNG2Image
- MovieAddFrame
- CheckInputFile
- args_callback_option
- args_callback_longoption
- args_callback_command
- args_callback_usage
- main
/* png2swf.c
PNG to SWF converter tool
Part of the swftools package.
Copyright (c) 2002,2003 Matthias Kramm <kramm@quiss.org>
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 <stdio.h>
#include <math.h>
#include <fcntl.h>
#include <zlib.h>
#include "../lib/rfxswf.h"
#include "../lib/args.h"
#include "../lib/png.h"
#define MAX_INPUT_FILES 1024
#define VERBOSE(x) (global.verbose>=x)
struct {
float framerate;
int max_image_width;
int max_image_height;
int force_width;
int force_height;
int nfiles;
int verbose;
int do_cgi;
int version;
char *outfile;
int mkjpeg;
float scale;
} global;
struct {
char *filename;
} image[MAX_INPUT_FILES];
static int custom_move=0;
static int move_x=0;
static int move_y=0;
static int clip_x1=0,clip_y1=0,clip_x2=0,clip_y2=0;
static int custom_clip = 0;
TAG *MovieStart(SWF * swf, float framerate, int dx, int dy)
{
TAG *t;
RGBA rgb;
memset(swf, 0x00, sizeof(SWF));
swf->fileVersion = global.version;
swf->frameRate = (int)(256.0 * framerate);
if(custom_clip) {
swf->movieSize.xmin = clip_x1 * 20;
swf->movieSize.ymin = clip_y1 * 20;
swf->movieSize.xmax = clip_x2 * 20;
swf->movieSize.ymax = clip_y2 * 20;
} else {
swf->movieSize.xmax = dx * 20;
swf->movieSize.ymax = dy * 20;
}
t = swf->firstTag = swf_InsertTag(NULL, ST_SETBACKGROUNDCOLOR);
rgb.r = rgb.g = rgb.b = rgb.a = 0x00;
//rgb.g = 0xff; //<--- handy for testing alpha conversion
swf_SetRGB(t, &rgb);
return t;
}
int MovieFinish(SWF * swf, TAG * t, char *sname)
{
int f, so = fileno(stdout);
t = swf_InsertTag(t, ST_END);
if ((!isatty(so)) && (!sname))
f = so;
else {
if (!sname)
sname = "output.swf";
f = open(sname,O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644);
}
if(global.do_cgi) {
if FAILED(swf_WriteCGI(swf)) fprintf(stderr,"WriteCGI() failed.\n");
} else {
if (swf_WriteSWF(f, swf)<0)
fprintf(stderr, "Unable to write output file: %s\n", sname);
if (f != so)
close(f);
}
swf_FreeTags(swf);
return 0;
}
int png_read_chunk(char (*head)[4], int*destlen, U8**destdata, FILE*fi)
{
unsigned int len;
if(destlen) *destlen=0;
if(destdata) *destdata=0;
if(!fread(&len, 4, 1, fi))
return 0;
if(!fread(head, 4, 1, fi))
return 0;
len = BE_32_TO_NATIVE(len);
if(destlen) *destlen = len;
if(destdata) {
if(len)
*destdata = malloc(len);
else
*destdata = 0;
if(!fread(*destdata, len, 1, fi)) {
*destdata = 0;
if(destlen) *destlen=0;
return 0;
}
fseek(fi, 4, SEEK_CUR);
} else {
fseek(fi, len+4, SEEK_CUR);
}
return 1;
}
unsigned int png_get_dword(FILE*fi)
{
unsigned int a;
fread(&a,4,1,fi);
return BE_32_TO_NATIVE(a);
}
struct png_header
{
int width;
int height;
int bpp;
int mode;
};
int png_read_header(FILE*fi, struct png_header*header)
{
char id[4];
int len;
int ok=0;
U8 head[8] = {137,80,78,71,13,10,26,10};
U8 head2[8];
U8*data;
fread(head2,8,1,fi);
if(strncmp((char*)head,(char*)head2,4))
return 0;
while(png_read_chunk(&id, &len, &data, fi))
{
if(VERBOSE(2))
printf("%c%c%c%c %d\n", id[0],id[1],id[2],id[3],len);
if(!strncasecmp(id, "IHDR", 4)) {
char a,b,c,f,i;
if(len < 8) exit(1);
header->width = BE_32_TO_NATIVE(*(U32*)&data[0]);
header->height = BE_32_TO_NATIVE(*(U32*)&data[4]);
a = data[8]; // should be 8
b = data[9]; // should be 3(indexed), 2(rgb), 0(grayscale) or 6(truecolor+alpha)
c = data[10]; // compression mode (0)
f = data[11]; // filter mode (0)
i = data[12]; // interlace mode (0)
if(VERBOSE(2)) printf("image mode:%d\n", b);
if(VERBOSE(2)) printf("bpp: %d\n", a);
if(VERBOSE(2)) printf("compression: %d\n", c);
if(VERBOSE(2)) printf("filter: %d\n", f);
if(VERBOSE(2)) printf("interlace: %d\n", i);
if(b!=0 && b!=2 && b!=3 && b!=6) {
fprintf(stderr, "Image mode %d not supported!\n", b);
if(b == 4) {
fprintf(stderr, "(This is a grayscale image with alpha channel-\n");
fprintf(stderr, " try converting it into an RGB image with alpha channel)\n");
}
exit(1);
}
if(a!=8 && (b==2 || b==6)) {
fprintf(stderr, "Bpp %d in mode %d not supported!\n", b, a);
exit(1);
}
if(c!=0) {
fprintf(stderr, "Compression mode %d not supported!\n", c);
exit(1);
}
if(f!=0) {
fprintf(stderr, "Filter mode %d not supported!\n", f);
exit(1);
}
if(i!=0) {
fprintf(stderr, "Interlace mode %d not supported!\n", i);
exit(1);
}
if(VERBOSE(2))
printf("%dx%d %d %d %d %d %d\n",header->width, header->height, a,b,c,f,i);
header->bpp = a;
header->mode = b;
ok = 1;
}
free(data);
}
return ok;
}
typedef unsigned char byte;
#define ABS(a) ((a)>0?(a):(-(a)))
byte inline PaethPredictor (byte a,byte b,byte c)
{
// a = left, b = above, c = upper left
int p = a + b - c; // initial estimate
int pa = ABS(p - a); // distances to a, b, c
int pb = ABS(p - b);
int pc = ABS(p - c);
// return nearest of a,b,c,
// breaking ties in order a,b,c.
if (pa <= pb && pa <= pc)
return a;
else if (pb <= pc)
return b;
else return c;
}
void applyfilter3(int mode, U8*src, U8*old, U8*dest, int width)
{
int x;
unsigned char lastr=0;
unsigned char lastg=0;
unsigned char lastb=0;
unsigned char upperlastr=0;
unsigned char upperlastg=0;
unsigned char upperlastb=0;
if(mode==0) {
for(x=0;x<width;x++) {
dest[0] = 255;
dest[1] = src[0];
dest[2] = src[1];
dest[3] = src[2];
dest+=4;
src+=3;
}
}
else if(mode==1) {
for(x=0;x<width;x++) {
dest[0] = 255;
dest[1] = src[0]+lastr;
dest[2] = src[1]+lastg;
dest[3] = src[2]+lastb;
lastr = dest[1];
lastg = dest[2];
lastb = dest[3];
dest+=4;
src+=3;
}
}
else if(mode==2) {
for(x=0;x<width;x++) {
dest[0] = 255;
dest[1] = src[0]+old[1];
dest[2] = src[1]+old[2];
dest[3] = src[2]+old[3];
dest+=4;
old+=4;
src+=3;
}
}
else if(mode==3) {
for(x=0;x<width;x++) {
dest[0] = 255;
dest[1] = src[0]+(old[1]+lastr)/2;
dest[2] = src[1]+(old[2]+lastg)/2;
dest[3] = src[2]+(old[3]+lastb)/2;
lastr = dest[1];
lastg = dest[2];
lastb = dest[3];
dest+=4;
old+=4;
src+=3;
}
}
else if(mode==4) {
for(x=0;x<width;x++) {
dest[0] = 255;
dest[1] = src[0]+PaethPredictor(lastr,old[1],upperlastr);
dest[2] = src[1]+PaethPredictor(lastg,old[2],upperlastg);
dest[3] = src[2]+PaethPredictor(lastb,old[3],upperlastb);
lastr = dest[1];
lastg = dest[2];
lastb = dest[3];
upperlastr = old[1];
upperlastg = old[2];
upperlastb = old[3];
dest+=4;
old+=4;
src+=3;
}
}
}
void applyfilter4(int mode, U8*src, U8*old, U8*dest, int width)
{
int x;
unsigned char lastr=0;
unsigned char lastg=0;
unsigned char lastb=0;
unsigned char lasta=0; //TODO: 255?
unsigned char upperlastr=0;
unsigned char upperlastg=0;
unsigned char upperlastb=0;
unsigned char upperlasta=0; //TODO: 255?
if(mode==0) {
for(x=0;x<width;x++) {
dest[0] = src[3];
dest[1] = src[0];
dest[2] = src[1];
dest[3] = src[2];
dest+=4;
src+=4;
}
}
else if(mode==1) {
for(x=0;x<width;x++) {
dest[0] = src[3]+lasta;
dest[1] = src[0]+lastr;
dest[2] = src[1]+lastg;
dest[3] = src[2]+lastb;
lasta = dest[0];
lastr = dest[1];
lastg = dest[2];
lastb = dest[3];
dest+=4;
src+=4;
}
}
else if(mode==2) {
for(x=0;x<width;x++) {
dest[0] = src[3]+old[0];
dest[1] = src[0]+old[1];
dest[2] = src[1]+old[2];
dest[3] = src[2]+old[3];
dest+=4;
old+=4;
src+=4;
}
}
else if(mode==3) {
for(x=0;x<width;x++) {
dest[0] = src[3]+(old[0]+lasta)/2;
dest[1] = src[0]+(old[1]+lastr)/2;
dest[2] = src[1]+(old[2]+lastg)/2;
dest[3] = src[2]+(old[3]+lastb)/2;
lasta = dest[0];
lastr = dest[1];
lastg = dest[2];
lastb = dest[3];
dest+=4;
old+=4;
src+=4;
}
}
else if(mode==4) {
for(x=0;x<width;x++) {
dest[0] = src[3]+PaethPredictor(lasta,old[0],upperlasta);
dest[1] = src[0]+PaethPredictor(lastr,old[1],upperlastr);
dest[2] = src[1]+PaethPredictor(lastg,old[2],upperlastg);
dest[3] = src[2]+PaethPredictor(lastb,old[3],upperlastb);
lasta = dest[0];
lastr = dest[1];
lastg = dest[2];
lastb = dest[3];
upperlasta = old[0];
upperlastr = old[1];
upperlastg = old[2];
upperlastb = old[3];
dest+=4;
old+=4;
src+=4;
}
}
}
void applyfilter1(int mode, U8*src, U8*old, U8*dest, int width)
{
int x;
unsigned char last=0;
unsigned char upperlast=0;
if(mode==0) {
for(x=0;x<width;x++) {
*dest = *src;
dest++;
src++;
}
}
else if(mode==1) {
for(x=0;x<width;x++) {
*dest = *src+last;
last = *dest;
dest++;
src++;
}
}
else if(mode==2) {
for(x=0;x<width;x++) {
*dest = *src+*old;
dest++;
old++;
src++;
}
}
else if(mode==3) {
for(x=0;x<width;x++) {
*dest = *src+(*old+last)/2;
last = *dest;
dest++;
old++;
src++;
}
}
else if(mode==4) {
for(x=0;x<width;x++) {
*dest = *src+PaethPredictor(last,*old,upperlast);
last = *dest;
upperlast = *old;
dest++;
old++;
src++;
}
}
}
TAG* PNG2Image(TAG*t, U16 id, char*filename, int*width, int*height)
{
char tagid[4];
U8*data;
U8*imagedata;
U8*zimagedata=0;
unsigned long int imagedatalen;
unsigned long int zimagedatalen=0;
U8*palette = 0;
int palettelen = 0;
U8*alphapalette = 0;
int alphapalettelen = 0;
struct png_header header;
int bypp;
U8 alphacolor[3];
int hasalphacolor=0;
int len;
FILE *fi;
U8 *scanline;
if ((fi = fopen(filename, "rb")) == NULL) {
if (VERBOSE(1))
fprintf(stderr, "Read access failed: %s\n", filename);
return t;
}
if(!png_read_header(fi, &header))
return 0;
*width = header.width;
*height = header.height;
if(header.mode == 3 || header.mode == 0) bypp = 1;
else
if(header.mode == 2) bypp = 3;
else
if(header.mode == 6) bypp = 4;
else
return 0;
imagedatalen = bypp * header.width * header.height + 65536;
imagedata = malloc(imagedatalen);
fseek(fi,8,SEEK_SET);
while(!feof(fi))
{
if(!png_read_chunk(&tagid, &len, &data, fi))
break;
if(!strncmp(tagid, "IEND", 4)) {
break;
}
if(!strncmp(tagid, "PLTE", 4)) {
palette = data;
palettelen = len/3;
data = 0; //don't free data
if(VERBOSE(2))
printf("%d colors in palette\n", palettelen);
}
if(!strncmp(tagid, "tRNS", 4)) {
if(header.mode == 3) {
alphapalette = data;
alphapalettelen = len;
data = 0; //don't free data
if(VERBOSE(2))
printf("found %d alpha colors\n", alphapalettelen);
} else if(header.mode == 0 || header.mode == 2) {
int t;
if(header.mode == 2) { // palette or grayscale?
alphacolor[0] = data[1];
alphacolor[1] = data[3];
alphacolor[2] = data[5];
} else {
alphacolor[0] = alphacolor[1] = alphacolor[2] = data[1];
}
if(VERBOSE(2))
printf("found alpha color: %02x%02x%02x\n", alphacolor[0], alphacolor[1], alphacolor[2]);
hasalphacolor = 1;
} else {
if(VERBOSE(2))
printf("ignoring tRNS %d entry (%d bytes)\n", header.mode, len);
}
}
if(!strncmp(tagid, "IDAT", 4)) {
if(!zimagedata) {
zimagedatalen = len;
zimagedata = malloc(len);
memcpy(zimagedata,data,len);
} else {
zimagedata = realloc(zimagedata, zimagedatalen+len);
memcpy(&zimagedata[zimagedatalen], data, len);
zimagedatalen += len;
}
}
if(data)
free(data);
}
if(!zimagedata || uncompress(imagedata, &imagedatalen, zimagedata, zimagedatalen) != Z_OK) {
fprintf(stderr, "Couldn't uncompress IDAT chunk (%lu bytes) in %s!\n", imagedatalen, filename);
if(zimagedata)
free(zimagedata);
return 0;
}
free(zimagedata);
if(alphapalette || hasalphacolor)
t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS2);
else
t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS);
swf_SetU16(t, id); // id
if(header.mode == 2 || header.mode == 6) {
U8*data2 = malloc(header.width*header.height*4);
int i,s=0;
int x,y;
int pos=0;
int opaque=0;
int transparent=0;
int semitransparent=0;
/* in case for mode 2, the following also performs 24->32 bit conversion */
unsigned char* firstline = malloc(header.width*4);
for(y=0;y<header.height;y++) {
int mode = imagedata[pos++]; //filter mode
U8*src;
U8*dest;
U8*old;
dest = &data2[(y*header.width)*4];
if(header.bpp == 8)
{
/* one byte per pixel */
src = &imagedata[pos];
pos+=header.width*(header.mode==6?4:3);
} else {
/* not implemented yet */
exit(1);
}
if(!y) {
old = firstline;
memset(old, 0, header.width*4); //TODO: fill alpha with 255?
} else {
old = &data2[(y-1)*header.width*4];
}
if(header.mode==6) {
applyfilter4(mode, src, old, dest, header.width);
} else if(header.mode==2) {
applyfilter3(mode, src, old, dest, header.width);
/* replace alpha color */
if(hasalphacolor) {
int x;
for(x=0;x<header.width;x++) {
if(dest[x*4+1] == alphacolor[0] &&
dest[x*4+2] == alphacolor[1] &&
dest[x*4+3] == alphacolor[2]) {
*(U32*)&dest[x*4] = 0;
}
}
}
}
}
free(firstline);
/* the image is now compressed and stored in data. Now let's take
a look at the alpha values */
if(header.mode == 6) {
for(y=0;y<header.height;y++) {
U8*l = &data2[(y*header.width)*4];
for(x=0;x<header.width;x++) {
U8 a = l[x*4];
U8 b = l[x*4+1];
U8 g = l[x*4+2];
U8 r = l[x*4+3];
if(a==255) transparent++;
else {
if(a==0) opaque++;
else semitransparent++;
l[x*4+3]=(int)r*a/255;
l[x*4+2]=(int)g*a/255;
l[x*4+1]=(int)b*a/255;
}
}
}
if(semitransparent || opaque) {
t->id = ST_DEFINEBITSLOSSLESS2;
}
}
swf_SetLosslessBits(t, header.width, header.height, data2, BMF_32BIT);
free(data2);
} else if(header.mode == 0 || header.mode == 3) {
RGBA*rgba;
int swf_width = BYTES_PER_SCANLINE(header.width);
U8*data2 = malloc(swf_width*header.height);
U8*tmpline = malloc(header.width);
int i,x,y;
int pos=0;
if(header.mode == 3) { // palette or grayscale?
rgba = (RGBA*)malloc(palettelen*sizeof(RGBA));
if(!palette) {
fprintf(stderr, "Error: No palette found!\n");
exit(1);
}
/* 24->32 bit conversion */
for(i=0;i<palettelen;i++) {
rgba[i].r = palette[i*3+0];
rgba[i].g = palette[i*3+1];
rgba[i].b = palette[i*3+2];
if(alphapalette && i<alphapalettelen) {
rgba[i].a = alphapalette[i];
rgba[i].r = ((int)rgba[i].r*rgba[i].a)/255;
rgba[i].g = ((int)rgba[i].g*rgba[i].a)/255;
rgba[i].b = ((int)rgba[i].b*rgba[i].a)/255;
} else {
rgba[i].a = 255;
}
if(hasalphacolor) {
if(rgba[i].r == alphacolor[0] &&
rgba[i].g == alphacolor[1] &&
rgba[i].b == alphacolor[2]) {
rgba[i].r = 0;
rgba[i].g = 0;
rgba[i].b = 0;
rgba[i].a = 0;
}
}
}
} else {
int mult = (0x1ff>>header.bpp);
palettelen = 1<<header.bpp;
rgba = (RGBA*)malloc(palettelen*sizeof(RGBA));
for(i=0;i<palettelen;i++) {
rgba[i].r = i*mult;
rgba[i].g = i*mult;
rgba[i].b = i*mult;
rgba[i].a = 255;
if(hasalphacolor) {
if(rgba[i].r == alphacolor[0]) {
rgba[i].r = 0;
rgba[i].g = 0;
rgba[i].b = 0;
rgba[i].a = 0;
}
}
}
}
for(y=0;y<header.height;y++) {
int mode = imagedata[pos++]; //filter mode
U8*old;
U8*dest = &data2[y*swf_width];
U8*src;
src = &imagedata[pos];
if(header.bpp == 8) {
pos+=header.width;
} else {
int x,s=0;
int bitpos = 0;
U32 v = (1<<header.bpp)-1;
for(x=0;x<header.width;x++) {
U32 r = src[s/8]<<8 |
src[s/8+1];
int t;
tmpline[x] = (r>>(16-header.bpp-(s&7)))&v;
s+=header.bpp;
}
src = tmpline;
pos+=(header.width*header.bpp+7)/8;
}
if(!y) {
memset(data2,0,swf_width);
old = &data2[y*swf_width];
} else {
old = &data2[(y-1)*swf_width];
}
applyfilter1(mode, src, old, dest, header.width);
}
swf_SetLosslessBitsIndexed(t, header.width, header.height, data2, rgba, palettelen);
free(tmpline);
free(rgba);
free(data2);
}
fclose(fi);
return t;
}
TAG *MovieAddFrame(SWF * swf, TAG * t, char *sname, int id)
{
SHAPE *s;
SRECT r;
MATRIX m;
int fs;
int width=0, height=0;
#ifndef HAVE_JPEGLIB
if(global.mkjpeg) {
global.mkjpeg = 0;
msg("<warning> No jpeg support compiled in");
}
#endif
if(global.mkjpeg) {
#ifdef HAVE_JPEGLIB
RGBA*data = 0;
getPNG(sname, &width, &height, (unsigned char**)&data);
if(!data)
exit(1);
if(swf_ImageHasAlpha(data, width, height)) {
t = swf_InsertTag(t, ST_DEFINEBITSJPEG3);
swf_SetU16(t, id);
swf_SetJPEGBits3(t, width,height,data,global.mkjpeg);
} else {
t = swf_InsertTag(t, ST_DEFINEBITSJPEG2);
swf_SetU16(t, id);
swf_SetJPEGBits2(t, width,height,data,global.mkjpeg);
}
#endif
} else if(1) {
RGBA*data = 0;
getPNG(sname, &width, &height, (unsigned char**)&data);
if(!data)
exit(1);
t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS);
swf_SetU16(t, id);
swf_SetLosslessImage(t, data,width,height);
} else {
/* old code: transform PNG encoding 1:1 to SWF */
t = PNG2Image(t, id, sname, &width, &height);
}
t = swf_InsertTag(t, ST_DEFINESHAPE3);
swf_ShapeNew(&s);
swf_GetMatrix(NULL, &m);
m.sx = (int)(20 * 0x10000);
m.sy = (int)(20 * 0x10000);
m.tx = 0;
m.ty = 0;
fs = swf_ShapeAddBitmapFillStyle(s, &m, id, 1);
swf_SetU16(t, id + 1); // id
r.xmin = r.ymin = 0;
r.xmax = width * 20;
r.ymax = height * 20;
swf_SetRect(t, &r);
swf_SetShapeHeader(t, s);
swf_ShapeSetAll(t, s, 0, 0, 0, fs, 0);
swf_ShapeSetLine(t, s, r.xmax, 0);
swf_ShapeSetLine(t, s, 0, r.ymax);
swf_ShapeSetLine(t, s, -r.xmax, 0);
swf_ShapeSetLine(t, s, 0, -r.ymax);
swf_ShapeSetEnd(t);
t = swf_InsertTag(t, ST_REMOVEOBJECT2);
swf_SetU16(t, 50); // depth
t = swf_InsertTag(t, ST_PLACEOBJECT2);
swf_GetMatrix(NULL, &m);
m.sx = (int)(0x10000 * global.scale);
m.sy = (int)(0x10000 * global.scale);
if(custom_move) {
m.tx = move_x*20;
m.ty = move_y*20;
} else {
m.tx = (swf->movieSize.xmax - (int) (width * global.scale * 20)) / 2;
m.ty = (swf->movieSize.ymax - (int) (height * global.scale * 20)) / 2;
}
swf_ObjectPlace(t, id + 1, 50, &m, NULL, NULL);
t = swf_InsertTag(t, ST_SHOWFRAME);
return t;
}
int CheckInputFile(char *fname, char **realname)
{
FILE *fi;
char *s = malloc(strlen(fname) + 5);
struct png_header head;
if (!s)
exit(2);
(*realname) = s;
strcpy(s, fname);
// Check whether file exists (with typical extensions)
if ((fi = fopen(s, "rb")) == NULL) {
sprintf(s, "%s.png", fname);
if ((fi = fopen(s, "rb")) == NULL) {
sprintf(s, "%s.PNG", fname);
if ((fi = fopen(s, "rb")) == NULL) {
sprintf(s, "%s.Png", fname);
if ((fi = fopen(s, "rb")) == NULL) {
fprintf(stderr, "Couldn't open %s!\n", fname);
return -1;
}
}
}
}
if(!png_read_header(fi, &head)) {
fprintf(stderr, "%s is not a PNG file!\n", fname);
return -1;
}
if (global.max_image_width < head.width)
global.max_image_width = head.width;
if (global.max_image_height < head.height)
global.max_image_height = head.height;
fclose(fi);
return 0;
}
int args_callback_option(char *arg, char *val)
{
int res = 0;
if (arg[1])
res = -1;
else
switch (arg[0]) {
case 'r':
if (val)
global.framerate = atof(val);
/* removed framerate>0 restriction in order to make
Flash Communication Server compatible SWFs */
if ((global.framerate < 0) ||(global.framerate >= 256.0)) {
if (VERBOSE(1))
fprintf(stderr,
"Error: You must specify a valid framerate between 1/256 and 255.\n");
exit(1);
}
res = 1;
break;
case 'o':
if (val)
global.outfile = val;
res = 1;
break;
case 's':
global.scale = atof(val)/100;
res = 1;
break;
case 'z':
if(global.version<6)
global.version = 6;
res = 0;
break;
case 'j':
global.mkjpeg = atoi(val);
res = 1;
break;
case 'T':
global.version = atoi(val);
res = 1;
break;
case 'C':
global.do_cgi = 1;
break;
case 'v':
global.verbose++;
res = 0;
break;
case 'q':
global.verbose--;
if(global.verbose<0)
global.verbose = 0;
res = 0;
break;
case 'X':
if (val)
global.force_width = atoi(val);
res = 1;
break;
case 'Y':
if (val)
global.force_height = atoi(val);
res = 1;
break;
case 'V':
printf("png2swf - part of %s %s\n", PACKAGE, VERSION);
exit(0);
case 'c': {
char*s = strdup(val);
char*x1 = strtok(s, ":");
char*y1 = strtok(0, ":");
char*x2 = strtok(0, ":");
char*y2 = strtok(0, ":");
if(!(x1 && y1 && x2 && y2)) {
fprintf(stderr, "-m option requires four arguments, <x1>:<y1>:<x2>:<y2>\n");
exit(1);
}
custom_clip = 1;
clip_x1 = atoi(x1);
clip_y1 = atoi(y1);
clip_x2 = atoi(x2);
clip_y2 = atoi(y2);
free(s);
res = 1;
break;
}
case 'm': {
char*s = strdup(val);
char*c = strchr(s, ':');
if(!c) {
fprintf(stderr, "-m option requires two arguments, <x>:<y>\n");
exit(1);
}
*c = 0;
custom_move = 1;
move_x = atoi(val);
move_y = atoi(c+1);
free(s);
res = 1;
break;
}
default:
res = -1;
break;
}
if (res < 0) {
if (VERBOSE(1))
fprintf(stderr, "Unknown option: -%s\n", arg);
exit(1);
return 0;
}
return res;
}
static struct options_t options[] = {
{"r", "rate"},
{"o", "output"},
{"j", "jpeg"},
{"z", "zlib"},
{"T", "flashversion"},
{"X", "pixel"},
{"Y", "pixel"},
{"v", "verbose"},
{"q", "quiet"},
{"C", "cgi"},
{"V", "version"},
{"s", "scale"},
{0,0}
};
int args_callback_longoption(char *name, char *val)
{
return args_long2shortoption(options, name, val);
}
int args_callback_command(char *arg, char *next) // actually used as filename
{
char *s;
if (CheckInputFile(arg, &s) < 0) {
if (VERBOSE(1))
fprintf(stderr, "Error opening input file: %s\n", arg);
free(s);
} else {
image[global.nfiles].filename = s;
global.nfiles++;
if (global.nfiles >= MAX_INPUT_FILES) {
if (VERBOSE(1))
fprintf(stderr, "Error: Too many input files.\n");
exit(1);
}
}
return 0;
}
void args_callback_usage(char *name)
{
printf("\n");
printf("Usage: %s [-X width] [-Y height] [-o file.swf] [-r rate] file1.png [file2.png...]\n", name);
printf("\n");
printf("-r , --rate <framerate> Set movie framerate (frames per second)\n");
printf("-o , --output <filename> Set name for SWF output file.\n");
printf("-j , --jpeg <quality> Generate a lossy jpeg bitmap inside the SWF, with a given quality (1-100)\n");
printf("-z , --zlib <zlib> Enable Flash 6 (MX) Zlib Compression\n");
printf("-T , --flashversion Set the flash version to generate\n");
printf("-X , --pixel <width> Force movie width to <width> (default: autodetect)\n");
printf("-Y , --pixel <height> Force movie height to <height> (default: autodetect)\n");
printf("-v , --verbose <level> Set verbose level (0=quiet, 1=default, 2=debug)\n");
printf("-q , --quiet Omit normal log messages, only log errors\n");
printf("-C , --cgi For use as CGI- prepend http header, write to stdout\n");
printf("-V , --version Print version information and exit\n");
printf("-s , --scale <percent> Scale image to <percent>%% size.\n");
printf("\n");
}
int main(int argc, char **argv)
{
SWF swf;
TAG *t;
memset(&global, 0x00, sizeof(global));
global.framerate = 1.0;
global.verbose = 1;
global.version = 8;
global.scale = 1.0;
processargs(argc, argv);
if(global.nfiles<=0) {
fprintf(stderr, "No png files found in arguments\n");
return 1;
}
if (VERBOSE(2))
fprintf(stderr, "Processing %i file(s)...\n", global.nfiles);
t = MovieStart(&swf, global.framerate,
global.force_width ? global.force_width : (int)(global.max_image_width*global.scale),
global.force_height ? global.force_height : (int)(global.max_image_height*global.scale));
{
int i;
for (i = 0; i < global.nfiles; i++) {
if (VERBOSE(3))
fprintf(stderr, "[%03i] %s\n", i,
image[i].filename);
t = MovieAddFrame(&swf, t, image[i].filename, (i * 2) + 1);
free(image[i].filename);
}
}
MovieFinish(&swf, t, global.outfile);
return 0;
}