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#ifndef IMAGE_HH
#define IMAGE_HH
#include "date.hh"
#include "location.hh"
#include "rotation.hh"
#include <filesystem>
#include <memory>
class RoBuffer;
class Image {
public:
virtual ~Image() = default;
class Thumbnail {
public:
virtual ~Thumbnail() = default;
virtual std::string_view mime_type() const = 0;
virtual uint64_t size() const = 0;
protected:
Thumbnail() = default;
};
static std::unique_ptr<Image> load(std::filesystem::path const& path);
virtual uint64_t width() const = 0;
virtual uint64_t height() const = 0;
virtual Location location() const = 0;
virtual Rotation rotation() const = 0;
virtual Date date() const = 0;
virtual Thumbnail* thumbnail() const = 0;
protected:
Image() = default;
Image(Image const&) = delete;
Image& operator=(Image const&) = delete;
};
class ThumbnailReader {
public:
virtual ~ThumbnailReader() = default;
static std::unique_ptr<ThumbnailReader> create();
enum class Return {
NEED_MORE, // Call drain() again if you want data.
DONE, // Data is available, no need to call drain() again.
ERR, // Error, no data will ever be available.
};
virtual Return drain(RoBuffer* in, size_t* bytes = nullptr) = 0;
// Returns empty until drain() returns Return::DONE.
virtual std::string_view data() const = 0;
protected:
ThumbnailReader() = default;
ThumbnailReader(ThumbnailReader const&) = delete;
ThumbnailReader& operator=(ThumbnailReader const&) = delete;
};
#endif // IMAGE_HH
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