source/graphics/image.cpp

   1 #ifdef WITH_DEVIL
   2 #include <IL/il.h>
   3 #endif
   4 #include <msp/io/file.h>
   5 #include <msp/io/memory.h>
   6 #include "image.h"
   7 #include "image_devil.h"
   8 #include "image_png.h"
   9 #include "image_private.h"
  10
  11 using namespace std;
  12
  13 namespace Msp {
  14 namespace Graphics {
  15
  16 Image::Private::Private()
  17 {
  18 #ifdef WITH_DEVIL
  19         id = 0;
  20 #endif
  21         fmt = RGB;
  22         width = 0;
  23         height = 0;
  24         data = 0;
  25 }
  26
  27
  28 Image::Image():
  29         priv(new Private)
  30 {
  31 #if !defined(WITH_DEVIL) && !defined(WITH_LIBPNG)
  32         throw runtime_error("no image support");
  33 #endif
  34 }
  35
  36 Image::~Image()
  37 {
  38 #ifdef WITH_DEVIL
  39         if(priv->id)
  40                 ilDeleteImages(1, &priv->id);
  41         else
  42 #endif
  43         delete[] priv->data;
  44         delete priv;
  45 }
  46
  47 void Image::load_file(const string &fn)
  48 {
  49 #ifdef WITH_LIBPNG
  50         if(fn.size()>4 && !fn.compare(fn.size()-4, 4, ".png"))
  51         {
  52                 IO::BufferedFile file(fn);
  53                 load_png(file, *priv);
  54         }
  55         else
  56 #endif
  57         {
  58 #ifdef WITH_DEVIL
  59                 load_devil_file(fn, *priv);
  60 #else
  61                 throw unsupported_image_format("DevIL needed for non-PNG images");
  62 #endif
  63         }
  64         (void)fn;
  65 }
  66
  67 void Image::load_memory(const void *data, unsigned size)
  68 {
  69 #ifdef WITH_LIBPNG
  70         if(size>=8 && is_png(data, 8))
  71         {
  72                 IO::Memory mem(reinterpret_cast<const char *>(data), size);
  73                 load_png(mem, *priv);
  74         }
  75         else
  76 #endif
  77         {
  78 #ifdef WITH_DEVIL
  79                 load_devil_mem(data, size, *priv);
  80 #else
  81                 throw unsupported_image_format("DevIL needed for non-PNG images");
  82 #endif
  83         }
  84         (void)data;
  85         (void)size;
  86 }
  87
  88 PixelFormat Image::get_format() const
  89 {
  90         return priv->fmt;
  91 }
  92
  93 unsigned Image::get_width() const
  94 {
  95         return priv->width;
  96 }
  97
  98 unsigned Image::get_height() const
  99 {
 100         return priv->height;
 101 }
 102
 103 const void *Image::get_data() const
 104 {
 105         return priv->data;
 106 }
 107
 108 } // namespace Graphics
 109 } // namespace Msp