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* fileName)
25 this->fileName = fileName;
29 void WJpeg::overrideSurface(Surface* newSurface)
36 Log* logger = Log::getInstance();
38 logger->log("BJpeg", Log::DEBUG, "Here1");
40 FILE* infile = fopen(fileName, "r");
43 logger->log("BJpeg", Log::ERR, "Can't open JPEG");
46 logger->log("BJpeg", Log::DEBUG, "File opened");
48 struct jpeg_decompress_struct cinfo;
49 struct jpeg_error_mgr jerr;
50 cinfo.err = jpeg_std_error(&jerr);
51 jpeg_create_decompress(&cinfo);
52 jpeg_stdio_src(&cinfo, infile);
53 jpeg_read_header(&cinfo, TRUE);
54 jpeg_start_decompress(&cinfo);
56 logger->log("BJpeg", Log::DEBUG, "JPEG startup done");
59 setDimensions(cinfo.output_height, cinfo.output_width);
64 unsigned char* buffer = (unsigned char*)malloc(height * width * 3);
65 logger->log("BJpeg", Log::DEBUG, "Buffer allocated at %p", buffer);
67 unsigned char* bufferPointers[height];
68 for(int ps = 0; ps < height; ps++) bufferPointers[ps] = buffer + (ps * width * 3);
70 logger->log("BJpeg", Log::DEBUG, "done array check");
73 while (cinfo.output_scanline < cinfo.output_height)
75 rowsread += jpeg_read_scanlines(&cinfo, &bufferPointers[rowsread], height);
78 logger->log("BJpeg", Log::DEBUG, "Done all jpeg_read");
80 jpeg_finish_decompress(&cinfo);
81 jpeg_destroy_decompress(&cinfo);
85 logger->log("BJpeg", Log::DEBUG, "jpeg shutdown done, x, y %u %u", width, height);
91 for (y = 0; y < height; y++)
93 p = bufferPointers[y];
95 for (x = 0; x < width; x++)
104 surface->drawPixel(screenX + x, screenY + y, c);
109 logger->log("BJpeg", Log::DEBUG, "deleted buffer");