source/pixelformat.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgl
   4 Copyright © 2007  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include "except.h"
   9 #include "pixelformat.h"
  10
  11 using namespace std;
  12
  13 namespace Msp {
  14 namespace GL {
  15
  16 istream &operator>>(istream &in, PixelFormat &fmt)
  17 {
  18         string word;
  19
  20         in>>word;
  21         if(word=="COLOR_INDEX")
  22                 fmt=COLOR_INDEX;
  23         else if(word=="STENCIL_INDEX")
  24                 fmt=STENCIL_INDEX;
  25         else if(word=="DEPTH_COMPONENT")
  26                 fmt=DEPTH_COMPONENT;
  27         else if(word=="RED")
  28                 fmt=RED;
  29         else if(word=="GREEN")
  30                 fmt=GREEN;
  31         else if(word=="BLUE")
  32                 fmt=BLUE;
  33         else if(word=="ALPHA")
  34                 fmt=ALPHA;
  35         else if(word=="RGB")
  36                 fmt=RGB;
  37         else if(word=="RGBA")
  38                 fmt=RGBA;
  39         else if(word=="BGR")
  40                 fmt=BGR;
  41         else if(word=="BGRA")
  42                 fmt=BGRA;
  43         else if(word=="LUMINANCE")
  44                 fmt=LUMINANCE;
  45         else if(word=="LUMINANCE_ALPHA")
  46                 fmt=LUMINANCE_ALPHA;
  47         else
  48                 in.setstate(ios_base::failbit);
  49
  50         return in;
  51 }
  52
  53 PixelFormat pixelformat_from_graphics(Graphics::PixelFormat pf)
  54 {
  55         switch(pf)
  56         {
  57         case Graphics::COLOR_INDEX: return COLOR_INDEX;
  58         case Graphics::LUMINANCE: return LUMINANCE;
  59         case Graphics::LUMINANCE_ALPHA: return LUMINANCE_ALPHA;
  60         case Graphics::RGB: return RGB;
  61         case Graphics::RGBA: return RGBA;
  62         case Graphics::BGR: return BGR;
  63         case Graphics::BGRA: return BGRA;
  64         default: throw InvalidParameterValue("Unknown Graphics::PixelFormat");
  65         }
  66 }
  67
  68 } // namespace GL
  69 } // namespace Msp