#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
namespace Graphics {
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
if(registry.loaders.empty())
throw unsupported_image_format("no loaders");
- vector<char> sig_buf(registry.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=registry.loaders.begin(); (!loader && i!=registry.loaders.end()); ++i)
{
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;
}
+void ImageLoader::load(Image::Data &data)
+{
+ 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;
+}
+
ImageLoader::Registry &ImageLoader::get_registry()
{
static Registry registry;