src/Image.cpp

   1 /* Copyright ® 2008 Fulvio Satta
   2  *
   3  * If you want contact me, send an email to Yota_VGA@users.sf.net
   4  *
   5  * This file is part of Biscotto
   6  *
   7  * Biscotto is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * Biscotto is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 #include "Image.h"
  23 #include <ImfChannelList.h>
  24 #include <cstring> //For memset
  25
  26 using namespace Imf;
  27 using namespace boost;
  28 using namespace std;
  29
  30 Image::Image(const string &filename, unsigned int w, unsigned int h,
  31         enum Action action) : data(new RGBA[w * h]), m_w(w), m_h(h)
  32 {
  33     /* Make an header */
  34     Header header(w, h);
  35     /* Channel inserting */
  36     header.channels().insert("R", Channel(FLOAT));
  37     header.channels().insert("G", Channel(FLOAT));
  38     header.channels().insert("B", Channel(FLOAT));
  39     header.channels().insert("A", Channel(FLOAT));
  40
  41     /* Make the file */
  42     file = auto_ptr<OutputFile>(new OutputFile(filename.c_str(),
  43                 header));
  44
  45     /* Make a framebuffer */
  46     FrameBuffer framebuffer;
  47
  48     /* Assign the color corrispondent slices at the framebuffer */
  49     framebuffer.insert("R", Slice(FLOAT, (char *)&data[0].r,
  50                 sizeof(struct RGBA) * h, sizeof(struct RGBA)));
  51     framebuffer.insert("G", Slice(FLOAT, (char *)&data[0].g,
  52                 sizeof(struct RGBA) * h, sizeof(struct RGBA)));
  53     framebuffer.insert("B", Slice(FLOAT, (char *)&data[0].b,
  54                 sizeof(struct RGBA) * h, sizeof(struct RGBA)));
  55     framebuffer.insert("A", Slice(FLOAT, (char *)&data[0].a,
  56                 sizeof(struct RGBA) * h, sizeof(struct RGBA)));
  57
  58     /* Clear the image data (black and transparent) */
  59     memset(data.get(), 0, sizeof(RGBA) * w * h);
  60
  61     /* Join the framebuffer with the file */
  62     file->setFrameBuffer(framebuffer);
  63 }
  64
  65 void Image::writeLines(unsigned int n)
  66 {
  67     file->writePixels(n);
  68 }
  69
  70 void Image::writeLine()
  71 {
  72     writeLines(1);
  73 }