Copyright (c) 2000, 2001 Rainer Böhme <rfxswf@reflex-studio.de>
- This file is distributed under the GPL, see file COPYING for details
+ 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 */
#define OUTBUFFER_SIZE 0x8000
// Destination manager callbacks
-void RFXSWF_init_destination(j_compress_ptr cinfo)
+static void RFXSWF_init_destination(j_compress_ptr cinfo)
{ JPEGDESTMGR * dmgr = (JPEGDESTMGR *)cinfo->dest;
dmgr->buffer = (JOCTET*)malloc(OUTBUFFER_SIZE);
dmgr->mgr.next_output_byte = dmgr->buffer;
dmgr->mgr.free_in_buffer = OUTBUFFER_SIZE;
}
-boolean RFXSWF_empty_output_buffer(j_compress_ptr cinfo)
+static boolean RFXSWF_empty_output_buffer(j_compress_ptr cinfo)
{ JPEGDESTMGR * dmgr = (JPEGDESTMGR *)cinfo->dest;
swf_SetBlock(dmgr->t,(U8*)dmgr->buffer,OUTBUFFER_SIZE);
dmgr->mgr.next_output_byte = dmgr->buffer;
return TRUE;
}
-void RFXSWF_term_destination(j_compress_ptr cinfo)
+static void RFXSWF_term_destination(j_compress_ptr cinfo)
{ JPEGDESTMGR * dmgr = (JPEGDESTMGR *)cinfo->dest;
swf_SetBlock(dmgr->t,(U8*)dmgr->buffer,OUTBUFFER_SIZE-dmgr->mgr.free_in_buffer);
free(dmgr->buffer);
swf_SetJPEGBitsFinish(jpeg);
}
+void swf_GetJPEGSize(char * fname, int*width, int*height)
+{ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ FILE * fi;
+ *width = 0;
+ *height = 0;
+ cinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_decompress(&cinfo);
+ if ((fi=fopen(fname,"rb"))==NULL) {
+ fprintf(stderr, "rfxswf: file open error\n");
+ return;
+ }
+ jpeg_stdio_src(&cinfo, fi);
+ jpeg_read_header(&cinfo, TRUE);
+ *width = cinfo.image_width;
+ *height = cinfo.image_height;
+ jpeg_destroy_decompress(&cinfo);
+ fclose(fi);
+}
+
int swf_SetJPEGBits(TAG * t,char * fname,int quality)
{ struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
int y = js[x*3+0];
int u = js[x*3+1];
int v = js[x*3+1];
- // untested:
js[x*3+0] = y + ((360*(v-128))>>8);
- js[x*3+1] = y - ((88*(u-128)-183*(v-128))>>8);
+ js[x*3+1] = y - ((88*(u-128)+183*(v-128))>>8);
js[x*3+2] = y + ((455 * (u-128))>>8);
}
}
return 0;
}
+/* jpeg_source_mgr functions */
+static void tag_init_source(struct jpeg_decompress_struct *cinfo)
+{
+ TAG*tag = (TAG*)cinfo->client_data;
+ swf_SetTagPos(tag, 2);
+ cinfo->src->bytes_in_buffer = 0;
+}
+static boolean tag_fill_input_buffer(struct jpeg_decompress_struct *cinfo)
+{
+ TAG*tag = (TAG*)cinfo->client_data;
+ if(tag->data[tag->pos+0] == 0xff &&
+ tag->data[tag->pos+1] == 0xd9 &&
+ tag->data[tag->pos+2] == 0xff &&
+ tag->data[tag->pos+3] == 0xd8) {
+ printf("Skip\n");
+ tag->pos += 4;
+ }
+ if(tag->pos >= tag->len) {
+ cinfo->src->next_input_byte = 0;
+ cinfo->src->bytes_in_buffer = 0;
+ return 0;
+ }
+ cinfo->src->next_input_byte = &tag->data[tag->pos];
+ cinfo->src->bytes_in_buffer = 1;//tag->len - tag->pos;
+ tag->pos += 1;
+ return 1;
+}
+static void tag_skip_input_data(struct jpeg_decompress_struct *cinfo, long count)
+{
+ TAG*tag = (TAG*)cinfo->client_data;
+ cinfo->src->next_input_byte = 0;
+ cinfo->src->bytes_in_buffer = 0;
+ tag->pos += count;
+}
+static boolean tag_resync_to_restart(struct jpeg_decompress_struct *cinfo, int desired)
+{
+ return jpeg_resync_to_restart(cinfo, desired);
+}
+static void tag_term_source(struct jpeg_decompress_struct *cinfo)
+{
+ TAG*tag = (TAG*)cinfo->client_data;
+}
+RGBA* swf_JPEG2TagToImage(TAG*tag, int*width, int*height)
+{
+ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ struct jpeg_source_mgr mgr;
+ RGBA * dest;
+ *width = 0;
+ *height = 0;
+
+ if(tag->id == ST_DEFINEBITSJPEG) {
+ fprintf(stderr, "rfxswf: extracting from definebitsjpeg not yet supported");
+ return 0;
+ }
+ if(tag->id == ST_DEFINEBITSJPEG3) {
+ fprintf(stderr, "rfxswf: extracting from definebitsjpeg3 not yet supported");
+ return 0;
+ }
+
+ cinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_decompress(&cinfo);
+
+ cinfo.client_data = (void*)tag;
+ cinfo.src = &mgr;
+ cinfo.src->init_source = tag_init_source;
+ cinfo.src->fill_input_buffer = tag_fill_input_buffer;
+ cinfo.src->skip_input_data = tag_skip_input_data;
+ cinfo.src->resync_to_restart = jpeg_resync_to_restart;
+ cinfo.src->term_source = tag_term_source;
+ cinfo.out_color_space = JCS_RGB;
+
+ jpeg_read_header(&cinfo, TRUE);
+ *width = cinfo.image_width;
+ *height = cinfo.image_height;
+ dest = malloc(sizeof(RGBA)*cinfo.image_width*cinfo.image_height);
+
+ jpeg_start_decompress(&cinfo);
+ int y;
+ for (y=0;y<cinfo.output_height;y++) {
+ RGBA* line = &dest[y*cinfo.image_width];
+ U8* to = (U8*)line;
+ int x;
+ jpeg_read_scanlines(&cinfo,&to,1);
+ for(x=cinfo.output_width-1;x>=0;--x) {
+ int b = to[x*3+0];
+ int g = to[x*3+1];
+ int r = to[x*3+2];
+ line[x].r = r;
+ line[x].g = g;
+ line[x].b = b;
+ line[x].a = 255;
+ }
+ }
+
+ jpeg_finish_decompress(&cinfo);
+
+ jpeg_destroy_decompress(&cinfo);
+ return dest;
+}
+
+
#endif // HAVE_JPEGLIB
// Lossless compression texture based on zlib
} else res = -3; // zlib error
}
-
- while(t->len < 64) { /* actually, 63 and above is o.k., but let's stay on the safe side */
-
- /* Flash players up to MX crash or do strange things if they encounter a
- DefineLossless Tag with a payload of less than 63 bytes. They also
- substitute the whole bitmap by a red rectangle.
-
- This loop fills up the tag with zeroes so that this doesn't happen.
- */
- swf_SetU8(t, 0);
- }
-
return res;
}
int swf_SetLosslessBitsIndexed(TAG * t,U16 width,U16 height,U8 * bitmap,RGBA * palette,U16 ncolors)
{ RGBA * pal = palette;
int bps = BYTES_PER_SCANLINE(width);
- U8 * data;
int res = 0;
if (!pal) // create default palette for grayscale images
deflateEnd(&zs);
- if (zs.next_out>data) swf_SetBlock(t,data,zs.next_out-data);
-
free(zpal);
} else res = -2; // memory error
} else res = -3; // zlib error
- free(data);
}
if (!palette) free(pal);
{ return swf_SetLosslessBitsIndexed(t,width,height,bitmap,NULL,256);
}
+RGBA* swf_DefineLosslessBitsTagToImage(TAG*tag, int*dwidth, int*dheight)
+{
+ int id,format,height, width, pos;
+ U32 datalen, datalen2;
+ int error;
+ int bpp=1;
+ int cols=0;
+ int pos2=0;
+ char alpha = tag->id == ST_DEFINEBITSLOSSLESS2;
+ int t,x,y;
+ RGBA*palette;
+ U8*data,*data2;
+ RGBA*dest;
+ if(tag->id != ST_DEFINEBITSLOSSLESS &&
+ tag->id != ST_DEFINEBITSLOSSLESS2) {
+ fprintf(stderr, "rfxswf: Object %d is not a PNG picture!\n",GET16(tag->data));
+ return 0;
+ }
+ swf_SetTagPos(tag, 0);
+ id =swf_GetU16(tag);
+ format = swf_GetU8(tag);
+ if(format == 3) bpp = 8;
+ if(format == 4) bpp = 16;
+ if(format == 5) bpp = 32;
+ if(format!=3 && format!=5) {
+ if(format==4)
+ fprintf(stderr, "rfxswf: Can't handle 16-bit palette images yet (image %d)\n",id);
+ else
+ fprintf(stderr, "rfxswf: Unknown image type %d in image %d\n", format, id);
+ return 0;
+ }
+ *dwidth = width = swf_GetU16(tag);
+ *dheight = height = swf_GetU16(tag);
+
+ dest = malloc(sizeof(RGBA)*width*height);
+
+ if(format == 3) cols = swf_GetU8(tag) + 1;
+ else cols = 0;
+
+ data = 0;
+ datalen = (width*height*bpp/8+cols*8);
+ do {
+ if(data)
+ free(data);
+ datalen+=4096;
+ data = malloc(datalen);
+ error = uncompress (data, &datalen, &tag->data[tag->pos], tag->len-tag->pos);
+ } while(error == Z_BUF_ERROR);
+ if(error != Z_OK) {
+ fprintf(stderr, "rfxswf: Zlib error %d (image %d)\n", error, id);
+ return 0;
+ }
+ pos = 0;
+
+ palette = (RGBA*)malloc(cols*sizeof(RGBA));
+ for(t=0;t<cols;t++) {
+ palette[t].r = data[pos++];
+ palette[t].g = data[pos++];
+ palette[t].b = data[pos++];
+ if(alpha) {
+ palette[t].a = data[pos++];
+ }
+ }
+
+ for(y=0;y<height;y++) {
+ int srcwidth = width * (bpp/8);
+ if(bpp==32) {
+ if(!alpha) {
+ // 32 bit to 24 bit "conversion"
+ for(x=0;x<width;x++) {
+ dest[pos2].r=data[pos+1];
+ dest[pos2].g=data[pos+2];
+ dest[pos2].b=data[pos+3];
+ dest[pos2].a=255;
+ pos2++;
+ pos+=4; //ignore padding byte
+ }
+ } else {
+ for(x=0;x<width;x++) {
+ dest[pos2].r=data[pos+1];
+ dest[pos2].g=data[pos+2];
+ dest[pos2].b=data[pos+3];
+ dest[pos2].a=data[pos+0]; //alpha
+ pos2++;
+ pos+=4;
+ }
+ }
+ } else {
+ for(x=0;x<srcwidth;x++) {
+ dest[pos2]=palette[data[pos++]];
+ pos2++;
+ }
+ }
+ pos+=((srcwidth+3)&~3)-srcwidth; //align
+ }
+ if(palette)
+ free(palette);
+ free(data);
+ return dest;
+}
#endif // HAVE_ZLIB
}
#endif
+RGBA* swf_ExtractImage(TAG*tag, int*dwidth, int*dheight)
+{
+ RGBA*img;
+ if(tag->id == ST_DEFINEBITSJPEG ||
+ tag->id == ST_DEFINEBITSJPEG2 ||
+ tag->id == ST_DEFINEBITSJPEG3) {
+#ifdef HAVE_JPEGLIB
+ return swf_JPEG2TagToImage(tag, dwidth, dheight);
+#else
+ fprintf(stderr, "rfxswf: Error: No JPEG library compiled in");
+ return 0;
+#endif
+ }
+ if(tag->id == ST_DEFINEBITSLOSSLESS ||
+ tag->id == ST_DEFINEBITSLOSSLESS2) {
+#ifdef HAVE_ZLIB
+ return swf_DefineLosslessBitsTagToImage(tag, dwidth, dheight);
+#else
+ fprintf(stderr, "rfxswf: Error: No JPEG library compiled in");
+ return 0;
+#endif
+ }
+ fprintf(stderr, "rfxswf: Error: Invalid tag (%d, %s)", tag->id, swf_TagGetName(tag));
+ return 0;
+}
+
#undef OUTBUFFER_SIZE
git.asbjorn.biz / swftools.git / blobdiff