3 PNG to SWF converter tool
5 Part of the swftools package.
7 Copyright (c) 2002 Matthias Kramm <kramm@quiss.org>
9 This file is distributed under the GPL, see file COPYING for details
17 #include "../lib/rfxswf.h"
18 #include "../lib/args.h"
20 #define MAX_INPUT_FILES 1024
21 #define VERBOSE(x) (global.verbose>=x)
36 } image[MAX_INPUT_FILES];
38 TAG *MovieStart(SWF * swf, int framerate, int dx, int dy)
43 memset(swf, 0x00, sizeof(SWF));
46 swf->frameRate = (25600 / framerate);
47 swf->movieSize.xmax = dx * 20;
48 swf->movieSize.ymax = dy * 20;
50 t = swf->firstTag = swf_InsertTag(NULL, ST_SETBACKGROUNDCOLOR);
52 rgb.r = rgb.g = rgb.b = rgb.a = 0x00;
58 int MovieFinish(SWF * swf, TAG * t, char *sname)
60 int handle, so = fileno(stdout);
61 t = swf_InsertTag(t, ST_END);
63 if ((!isatty(so)) && (!sname))
68 handle = open(sname, O_RDWR | O_CREAT | O_TRUNC, 0666);
71 (swf_WriteSWF(handle, swf)) if (VERBOSE(1))
72 fprintf(stderr, "Unable to write output file: %s\n", sname);
80 int png_read_chunk(char (*head)[4], int*destlen, U8**destdata, FILE*fi)
83 if(destlen) *destlen=0;
84 if(destdata) *destdata=0;
85 if(!fread(&len, 4, 1, fi))
87 if(!fread(head, 4, 1, fi))
89 len = REVERSESWAP32(len);
90 if(destlen) *destlen = len;
93 *destdata = malloc(len);
96 if(!fread(*destdata, len, 1, fi)) {
98 if(destlen) *destlen=0;
101 fseek(fi, 4, SEEK_CUR);
104 fseek(fi, len+4, SEEK_CUR);
109 unsigned int png_get_dword(FILE*fi)
113 return REVERSESWAP32(a);
124 int png_read_header(FILE*fi, struct png_header*header)
129 U8 head[8] = {137,80,78,71,13,10,26,10};
133 if(strncmp(head,head2,4))
136 while(png_read_chunk(&id, &len, &data, fi))
139 printf("%c%c%c%c %d\n", id[0],id[1],id[2],id[3],len);
140 if(!strncasecmp(id, "IHDR", 4)) {
143 header->width = REVERSESWAP32(*(U32*)&data[0]);
144 header->height = REVERSESWAP32(*(U32*)&data[4]);
145 a = data[8]; // should be 8
146 b = data[9]; // should be 3(indexed) or 2(rgb)
148 c = data[10]; // compression mode (0)
149 f = data[11]; // filter mode (0)
150 i = data[12]; // interlace mode (0)
153 fprintf(stderr, "Image mode %d not supported!\n", b);
157 fprintf(stderr, "Bpp %d in mode %d not supported!\n", a);
161 fprintf(stderr, "Compression mode %d not supported!\n", c);
165 fprintf(stderr, "Filter mode %d not supported!\n", f);
169 fprintf(stderr, "Interlace mode %d not supported!\n", i);
173 printf("%dx%d %d %d %d %d %d\n",header->width, header->height, a,b,c,f,i);
184 typedef unsigned char byte;
185 #define ABS(a) ((a)>0?(a):(-(a)))
186 byte inline PaethPredictor (byte a,byte b,byte c)
188 // a = left, b = above, c = upper left
189 int p = a + b - c; // initial estimate
190 int pa = ABS(p - a); // distances to a, b, c
193 // return nearest of a,b,c,
194 // breaking ties in order a,b,c.
195 if (pa <= pb && pa <= pc)
202 void applyfilter(int mode, U8*src, U8*old, U8*dest, int width)
205 unsigned char lastr=0;
206 unsigned char lastg=0;
207 unsigned char lastb=0;
208 unsigned char upperlastr=0;
209 unsigned char upperlastg=0;
210 unsigned char upperlastb=0;
213 for(x=0;x<width;x++) {
223 for(x=0;x<width;x++) {
225 dest[1] = src[0]+lastr;
226 dest[2] = src[1]+lastg;
227 dest[3] = src[2]+lastb;
236 for(x=0;x<width;x++) {
238 dest[1] = src[0]+old[1];
239 dest[2] = src[1]+old[2];
240 dest[3] = src[2]+old[3];
247 for(x=0;x<width;x++) {
249 dest[1] = src[0]+(old[1]+lastr)/2;
250 dest[2] = src[1]+(old[2]+lastg)/2;
251 dest[3] = src[2]+(old[3]+lastb)/2;
261 for(x=0;x<width;x++) {
263 dest[1] = src[0]+PaethPredictor(lastr,old[1],upperlastr);
264 dest[2] = src[1]+PaethPredictor(lastg,old[2],upperlastg);
265 dest[3] = src[2]+PaethPredictor(lastb,old[3],upperlastb);
280 void applyfilter1(int mode, U8*src, U8*old, U8*dest, int width)
283 unsigned char last=0;
284 unsigned char upperlast=0;
287 for(x=0;x<width;x++) {
294 for(x=0;x<width;x++) {
302 for(x=0;x<width;x++) {
310 for(x=0;x<width;x++) {
311 *dest = *src+(*old+last)/2;
318 for(x=0;x<width;x++) {
319 *dest = *src+PaethPredictor(last,*old,upperlast);
330 TAG *MovieAddFrame(SWF * swf, TAG * t, char *sname, int id)
342 unsigned long int imagedatalen;
343 unsigned long int zimagedatalen=0;
346 struct png_header header;
352 if ((fi = fopen(sname, "rb")) == NULL) {
354 fprintf(stderr, "Read access failed: %s\n", sname);
358 if(!png_read_header(fi, &header))
361 if(header.mode == 3) bypp = 1;
363 if(header.mode == 2) bypp = 3;
366 imagedatalen = bypp * header.width * header.height + 65536;
367 imagedata = malloc(imagedatalen);
369 fseek(fi,8,SEEK_SET);
372 if(!png_read_chunk(&tagid, &len, &data, fi))
374 if(!strncmp(tagid, "IEND", 4)) {
377 if(!strncmp(tagid, "PLTE", 4)) {
382 printf("%d colors in palette\n", palettelen);
384 if(!strncmp(tagid, "IDAT", 4)) {
387 zimagedata = malloc(len);
388 memcpy(zimagedata,data,len);
390 zimagedata = realloc(zimagedata, zimagedatalen+len);
391 memcpy(&zimagedata[zimagedatalen], data, len);
392 zimagedatalen += len;
399 if(!zimagedata || uncompress(imagedata, &imagedatalen, zimagedata, zimagedatalen) != Z_OK) {
400 fprintf(stderr, "Couldn't uncompress %s!\n", sname);
407 t = swf_InsertTag(t, ST_DEFINEBITSLOSSLESS);
408 swf_SetU16(t, id); // id
409 if(header.mode == 2) {
410 U8*data2 = malloc(header.width*header.height*4);
414 /* 24->32 bit conversion */
415 for(y=0;y<header.height;y++) {
416 int mode = imagedata[pos++]; //filter mode
420 dest = &data2[(y*header.width)*4];
424 /* one byte per pixel */
425 src = &imagedata[pos];
428 /* not implemented yet */
433 memset(data2,0,header.width*4);
434 old = &data2[y*header.width*4];
436 old = &data2[(y-1)*header.width*4];
438 applyfilter(mode, src, old, dest, header.width);
440 swf_SetLosslessBits(t, header.width, header.height, data2, BMF_32BIT);
444 RGBA*rgba = (RGBA*)malloc(palettelen*sizeof(RGBA));
445 int swf_width = BYTES_PER_SCANLINE(header.width);
446 U8*data2 = malloc(swf_width*header.height);
447 U8*tmpline = malloc(header.width);
451 fprintf(stderr, "Error: No palette found!\n");
454 /* 24->32 bit conversion */
455 for(i=0;i<palettelen;i++) {
456 rgba[i].r = palette[i*3+0];
457 rgba[i].g = palette[i*3+1];
458 rgba[i].b = palette[i*3+2];
461 for(y=0;y<header.height;y++) {
462 int mode = imagedata[pos++]; //filter mode
464 U8*dest = &data2[y*swf_width];
466 src = &imagedata[pos];
467 if(header.bpp == 8) {
472 U32 v = (1<<header.bpp)-1;
473 for(x=0;x<header.width;x++) {
474 U32 r = src[s/8]<<8 |
477 tmpline[x] = (r>>(16-header.bpp-(s&7)))&v;
481 pos+=(header.width*header.bpp+7)/8;
485 memset(data2,0,swf_width);
486 old = &data2[y*swf_width];
488 old = &data2[(y-1)*swf_width];
490 applyfilter1(mode, src, old, dest, header.width);
492 swf_SetLosslessBitsIndexed(t, header.width, header.height, data2, rgba, palettelen);
498 t = swf_InsertTag(t, ST_DEFINESHAPE);
501 swf_GetMatrix(NULL, &m);
504 fs = swf_ShapeAddBitmapFillStyle(s, &m, id, 0);
506 swf_SetU16(t, id + 1); // id
509 r.xmax = header.width * 20;
510 r.ymax = header.height * 20;
513 swf_SetShapeHeader(t, s);
515 swf_ShapeSetAll(t, s, 0, 0, 0, fs, 0);
516 swf_ShapeSetLine(t, s, r.xmax, 0);
517 swf_ShapeSetLine(t, s, 0, r.ymax);
518 swf_ShapeSetLine(t, s, -r.xmax, 0);
519 swf_ShapeSetLine(t, s, 0, -r.ymax);
523 t = swf_InsertTag(t, ST_REMOVEOBJECT2);
524 swf_SetU16(t, 1); // depth
526 t = swf_InsertTag(t, ST_PLACEOBJECT2);
528 swf_GetMatrix(NULL, &m);
529 m.tx = (swf->movieSize.xmax - (int) header.width * 20) / 2;
530 m.ty = (swf->movieSize.ymax - (int) header.height * 20) / 2;
531 swf_ObjectPlace(t, id + 1, 1, &m, NULL, NULL);
533 t = swf_InsertTag(t, ST_SHOWFRAME);
541 int CheckInputFile(char *fname, char **realname)
544 char *s = malloc(strlen(fname) + 5);
545 struct png_header head;
552 // Check whether file exists (with typical extensions)
554 if ((fi = fopen(s, "rb")) == NULL) {
555 sprintf(s, "%s.png", fname);
556 if ((fi = fopen(s, "rb")) == NULL) {
557 sprintf(s, "%s.PNG", fname);
558 if ((fi = fopen(s, "rb")) == NULL) {
559 sprintf(s, "%s.Png", fname);
560 if ((fi = fopen(s, "rb")) == NULL)
561 fprintf(stderr, "Couldn't open %s!\n", fname);
567 if(!png_read_header(fi, &head)) {
568 fprintf(stderr, "%s is not a PNG file!\n", fname);
572 if (global.max_image_width < head.width)
573 global.max_image_width = head.width;
574 if (global.max_image_height < head.height)
575 global.max_image_height = head.height;
582 int args_callback_option(char *arg, char *val)
591 global.framerate = atoi(val);
592 if ((global.framerate < 1) ||(global.framerate > 5000)) {
595 "Error: You must specify a valid framerate between 1 and 10000.\n");
603 global.outfile = val;
609 global.verbose = atoi(val);
615 global.force_width = atoi(val);
621 global.force_height = atoi(val);
626 printf("png2swf - part of %s %s\n", PACKAGE, VERSION);
636 fprintf(stderr, "Unknown option: -%s\n", arg);
643 struct options_t options[] =
653 int args_callback_longoption(char *name, char *val)
655 return args_long2shortoption(options, name, val);
658 int args_callback_command(char *arg, char *next) // actually used as filename
661 if (CheckInputFile(arg, &s) < 0) {
663 fprintf(stderr, "Error opening input file: %s\n", arg);
666 image[global.nfiles].filename = s;
668 if (global.nfiles >= MAX_INPUT_FILES) {
670 fprintf(stderr, "Error: Too many input files.\n");
677 void args_callback_usage(char *name)
679 printf("Usage: %s [-options [value]] imagefiles[.png] [...]\n", name);
680 printf("-r framerate (rate) Set movie framerate (100/sec)\n");
681 printf("-o outputfile (output) Set name for SWF output file\n");
682 printf("-X pixel (width) Force movie width to pixel (default: autodetect)\n");
683 printf("-Y pixel (height) Force movie height to pixel (default: autodetect)\n");
684 printf("-v level (verbose) Set verbose level (0=quiet, 1=default, 2=debug)\n");
685 printf("-V (version) Print version information and exit\n");
689 int main(int argc, char **argv)
694 memset(&global, 0x00, sizeof(global));
696 global.framerate = 100;
699 processargs(argc, argv);
705 fprintf(stderr, "Processing %i file(s)...\n", global.nfiles);
707 t = MovieStart(&swf, global.framerate,
708 global.force_width ? global.force_width : global.
710 global.force_height ? global.force_height : global.
715 for (i = 0; i < global.nfiles; i++) {
717 fprintf(stderr, "[%03i] %s\n", i,
719 t = MovieAddFrame(&swf, t, image[i].filename, (i * 2) + 1);
720 free(image[i].filename);
724 MovieFinish(&swf, t, global.outfile);