#include <msp/core/refptr.h>
#include <msp/io/file.h>
#include <msp/strings/format.h>
+#include <msp/strings/utils.h>
+#include "bmploader.h"
#include "imageloader.h"
#ifdef WITH_LIBPNG
#include "png/pngloader.h"
namespace Msp {
namespace Graphics {
-bool ImageLoader::registered_loaders_changed = false;
-
ImageLoader::ImageLoader():
- source(0)
+ source(0),
+ state(INITIAL)
{ }
ImageLoader::~ImageLoader()
delete source;
}
+bool ImageLoader::detect_signature(const std::string &sig)
+{
+ Registry ®istry = get_registry();
+ for(list<RegisterBase *>::const_iterator i=registry.loaders.begin(); i!=registry.loaders.end(); ++i)
+ if((*i)->detect(sig))
+ return true;
+ return false;
+}
+
ImageLoader *ImageLoader::open_file(const string &fn)
{
try
ImageLoader *ImageLoader::open_io(IO::Seekable &io)
{
-#ifdef WITH_LIBPNG
- (void)RegisteredImageLoader<PngLoader>::reg;
-#endif
-#ifdef WITH_LIBJPEG
- (void)RegisteredImageLoader<JpegLoader>::reg;
-#endif
-#ifdef WITH_DEVIL
- (void)RegisteredImageLoader<DevilLoader>::reg;
-#endif
-#ifdef WITH_QUARTZ
- (void)RegisteredImageLoader<QuartzLoader>::reg;
-#endif
-
- list<RegisterBase *> &loaders = get_registered_loaders();
- if(registered_loaders_changed)
+ Registry ®istry = get_registry();
+ if(registry.changed)
{
- registered_loaders_changed = false;
- loaders.sort(signature_size_compare);
+ registry.changed = false;
+ registry.loaders.sort(signature_size_compare);
}
- if(loaders.empty())
+ if(registry.loaders.empty())
throw unsupported_image_format("no loaders");
- vector<char> sig_buf(loaders.back()->get_signature_size());
- unsigned sig_len = io.read(&sig_buf[0], sig_buf.size());
- string signature(sig_buf.begin(), sig_buf.end());
+ string signature(registry.loaders.back()->get_signature_size(), 0);
+ unsigned sig_len = io.read(&signature[0], signature.size());
ImageLoader *loader = 0;
- for(list<RegisterBase *>::const_iterator i=loaders.begin(); (!loader && i!=loaders.end()); ++i)
+ for(list<RegisterBase *>::const_iterator i=registry.loaders.begin(); (!loader && i!=registry.loaders.end()); ++i)
if((*i)->detect(signature))
loader = (*i)->create(io);
{
string sig_hex;
for(unsigned i=0; i<sig_len; ++i)
- {
- if(i)
- sig_hex += ' ';
- sig_hex += format("%02X", static_cast<unsigned char>(sig_buf[i]));
- }
+ append(sig_hex, " ", format("%02X", static_cast<unsigned char>(signature[i])));
throw unsupported_image_format(sig_hex);
}
return loader;
}
-
-ImageLoader::RegisterBase::RegisterBase()
+void ImageLoader::load(Image::Data &data)
{
- get_registered_loaders().push_back(this);
- registered_loaders_changed = true;
+ if(state>=FINISHED)
+ throw logic_error("already loaded");
+
+ if(state<HEADERS_LOADED)
+ load_headers_(data);
+ if(!data.pixels)
+ data.pixels = data.owned_pixels = new char[data.stride*data.height];
+ load_pixels_(data);
+ state = FINISHED;
}
+void ImageLoader::load_headers(Image::Data &data)
+{
+ if(state>=HEADERS_LOADED)
+ throw logic_error("headers already loaded");
+
+ load_headers_(data);
+ state = HEADERS_LOADED;
+}
-list<ImageLoader::RegisterBase *> &ImageLoader::get_registered_loaders()
+ImageLoader::Registry &ImageLoader::get_registry()
{
- static list<RegisterBase *> regs;
- return regs;
+ static Registry registry;
+ static bool initialized = false;
+ if(!initialized)
+ {
+ initialized = true;
+ register_loader<BmpLoader>();
+#ifdef WITH_LIBPNG
+ register_loader<PngLoader>();
+#endif
+#ifdef WITH_LIBJPEG
+ register_loader<JpegLoader>();
+#endif
+#ifdef WITH_DEVIL
+ register_loader<DevilLoader>();
+#endif
+#ifdef WITH_QUARTZ
+ register_loader<QuartzLoader>();
+#endif
+ }
+ return registry;
}
bool ImageLoader::signature_size_compare(RegisterBase *r1, RegisterBase *r2)
return r1->get_signature_size()<r2->get_signature_size();
}
+
+ImageLoader::Registry::Registry():
+ changed(false)
+{ }
+
+ImageLoader::Registry::~Registry()
+{
+ for(list<RegisterBase *>::iterator i=loaders.begin(); i!=loaders.end(); ++i)
+ delete *i;
+}
+
} // namespace Graphics
} // namespace Msp