source/graphics/image.cpp

   1 #include "image.h"
   2 #include <msp/core/refptr.h>
   3 #include <msp/fs/utils.h>
   4 #include <msp/io/file.h>
   5 #include <msp/io/memory.h>
   6 #include "imageloader.h"
   7
   8 using namespace std;
   9
  10 namespace Msp {
  11 namespace Graphics {
  12
  13 Image::Data::Data(const Data &other):
  14         fmt(other.fmt),
  15         width(other.width),
  16         height(other.height),
  17         stride(other.stride),
  18         owned_pixels(other.pixels ? new char[stride*height] : 0),
  19         pixels(owned_pixels)
  20 {
  21         if(pixels)
  22                 copy(other.pixels, other.pixels+stride*height, pixels);
  23 }
  24
  25 Image::Data &Image::Data::operator=(const Data &other)
  26 {
  27         delete[] owned_pixels;
  28         pixels = owned_pixels = 0;
  29
  30         fmt = other.fmt;
  31         width = other.width;
  32         height = other.height;
  33         stride = other.stride;
  34
  35         if(other.pixels)
  36         {
  37                 pixels = owned_pixels = new char[stride*height];
  38                 copy(other.pixels, other.pixels+stride*height, pixels);
  39         }
  40
  41         return *this;
  42 }
  43
  44 Image::Data::~Data()
  45 {
  46         delete[] owned_pixels;
  47 }
  48
  49
  50 void Image::load_file(const string &fn)
  51 {
  52         RefPtr<ImageLoader> loader = ImageLoader::open_file(fn);
  53         load(*loader);
  54 }
  55
  56 void Image::load_io(IO::Seekable &io)
  57 {
  58         RefPtr<ImageLoader> loader = ImageLoader::open_io(io);
  59         load(*loader);
  60 }
  61
  62 void Image::load(ImageLoader &loader)
  63 {
  64         if(loader.get_state()==ImageLoader::INITIAL)
  65                 data = Data();
  66         loader.load(data);
  67 }
  68
  69 void Image::load_into(ImageLoader &loader, void *buffer)
  70 {
  71         data.pixels = reinterpret_cast<char *>(buffer);
  72         load(loader);
  73 }
  74
  75 void Image::load_headers(ImageLoader &loader)
  76 {
  77         if(loader.get_state()==ImageLoader::INITIAL)
  78                 data = Data();
  79         loader.load_headers(data);
  80 }
  81
  82 } // namespace Graphics
  83 } // namespace Msp