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)
32 Log* logger = Log::getInstance();
34 FILE* infile = fopen(fileName, "r");
37 logger->log("BJpeg", Log::ERR, "Can't open JPEG");
40 logger->log("BJpeg", Log::DEBUG, "File opened");
42 struct jpeg_decompress_struct cinfo;
43 struct jpeg_error_mgr jerr;
44 cinfo.err = jpeg_std_error(&jerr);
45 jpeg_create_decompress(&cinfo);
46 jpeg_stdio_src(&cinfo, infile);
47 jpeg_read_header(&cinfo, TRUE);
48 jpeg_start_decompress(&cinfo);
50 logger->log("BJpeg", Log::DEBUG, "JPEG startup done %i %i", cinfo.output_width, cinfo.output_height);
53 setDimensions(cinfo.output_width, cinfo.output_height);
58 unsigned char* buffer = (unsigned char*)malloc(area.w * area.h * 3);
59 logger->log("BJpeg", Log::DEBUG, "Buffer allocated at %p, width = %i height = %i", buffer, area.w, area.h);
61 unsigned char* bufferPointers[area.h];
62 for(UINT ps = 0; ps < area.h; ps++) bufferPointers[ps] = buffer + (ps * area.w * 3);
64 logger->log("BJpeg", Log::DEBUG, "done array check");
67 while (cinfo.output_scanline < cinfo.output_height)
69 // logger->log("BJpeg", Log::DEBUG, "%i", rowsread);
70 rowsread += jpeg_read_scanlines(&cinfo, &bufferPointers[rowsread], area.h);
73 logger->log("BJpeg", Log::DEBUG, "Done all jpeg_read");
75 jpeg_finish_decompress(&cinfo);
76 jpeg_destroy_decompress(&cinfo);
80 logger->log("BJpeg", Log::DEBUG, "jpeg shutdown done, x, y %u %u", area.w, area.h);
86 for (y = 0; y < area.h; y++)
88 p = bufferPointers[y];
90 for (x = 0; x < area.w; x++)
94 // c = ( (0xFF000000 )
96 // | (p[xoff + 1] << 8)
97 // | (p[xoff + 2] ) );
100 c.green = p[xoff + 1];
101 c.blue = p[xoff + 2];
108 logger->log("BJpeg", Log::DEBUG, "deleted buffer");
112 ((SurfaceWin*)surface)->drawJpeg(fileName+1,offsetX,offsetY,&width,&height);//This should went into the abstract base classes?
113 //Windows has a problem with the leading / fixme
115 setDimensions(width, height);