2 Copyright 2004-2005 Chris Tallon
4 This file is part of VOMP.
6 VOMP is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 VOMP is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with VOMP; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 int WJpeg::init(char* tfileName)
31 Log* logger = Log::getInstance();
33 FILE* infile = fopen(fileName, "r");
36 logger->log("BJpeg", Log::ERR, "Can't open JPEG");
39 logger->log("BJpeg", Log::DEBUG, "File opened");
41 struct jpeg_decompress_struct cinfo;
42 struct jpeg_error_mgr jerr;
43 cinfo.err = jpeg_std_error(&jerr);
44 jpeg_create_decompress(&cinfo);
45 jpeg_stdio_src(&cinfo, infile);
46 jpeg_read_header(&cinfo, TRUE);
47 jpeg_start_decompress(&cinfo);
49 logger->log("BJpeg", Log::DEBUG, "JPEG startup done %i %i", cinfo.output_width, cinfo.output_height);
52 setDimensions(cinfo.output_width, cinfo.output_height);
57 unsigned char* buffer = (unsigned char*)malloc(area.w * area.h * 3);
58 logger->log("BJpeg", Log::DEBUG, "Buffer allocated at %p, width = %i height = %i", buffer, area.w, area.h);
60 unsigned char* bufferPointers[area.h];
61 for(UINT ps = 0; ps < area.h; ps++) bufferPointers[ps] = buffer + (ps * area.w * 3);
63 logger->log("BJpeg", Log::DEBUG, "done array check");
66 while (cinfo.output_scanline < cinfo.output_height)
68 // logger->log("BJpeg", Log::DEBUG, "%i", rowsread);
69 rowsread += jpeg_read_scanlines(&cinfo, &bufferPointers[rowsread], area.h);
72 logger->log("BJpeg", Log::DEBUG, "Done all jpeg_read");
74 jpeg_finish_decompress(&cinfo);
75 jpeg_destroy_decompress(&cinfo);
79 logger->log("BJpeg", Log::DEBUG, "jpeg shutdown done, x, y %u %u", area.w, area.h);
85 for (y = 0; y < area.h; y++)
87 p = bufferPointers[y];
89 for (x = 0; x < area.w; x++)
93 // c = ( (0xFF000000 )
95 // | (p[xoff + 1] << 8)
96 // | (p[xoff + 2] ) );
99 c.green = p[xoff + 1];
100 c.blue = p[xoff + 2];
107 logger->log("BJpeg", Log::DEBUG, "deleted buffer");