51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#ifndef MBGL_UTIL_IMAGE_READER_HPP
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#define MBGL_UTIL_IMAGE_READER_HPP
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#include "factory.hpp"
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#include "noncopyable.hpp"
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// stl
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#include <stdexcept>
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#include <string>
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namespace mbgl { namespace util {
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class image_reader_exception : public std::exception
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{
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private:
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std::string message_;
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public:
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image_reader_exception(std::string const& message)
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: message_(message) {}
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~image_reader_exception() throw() {}
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virtual const char* what() const throw()
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{
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return message_.c_str();
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}
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};
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struct image_reader : private noncopyable
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{
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virtual unsigned width() const=0;
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virtual unsigned height() const=0;
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virtual bool has_alpha() const=0;
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virtual bool premultiplied_alpha() const=0;
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virtual void read(unsigned x,unsigned y, unsigned width, unsigned height, char* image)=0;
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virtual ~image_reader() {}
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};
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template <typename...Args>
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bool register_image_reader(std::string const& type, image_reader* (* fun)(Args...))
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{
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return factory<image_reader,std::string, Args...>::instance().register_product(type, fun);
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}
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//image_reader* get_image_reader(std::string const& file,std::string const& type);
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//image_reader* get_image_reader(std::string const& file);
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image_reader* get_image_reader(char const* data, size_t size);
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}}
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#endif
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