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#ifndef IMAGE_IO_BASE_DATA_SEGMENT_DATA_SOURCE_H_ // NOLINT
#define IMAGE_IO_BASE_DATA_SEGMENT_DATA_SOURCE_H_ // NOLINT
#include "image_io/base/data_source.h"
namespace photos_editing_formats {
namespace image_io {
/// DataSegmentDataSource is an implementation of DataSource that provides
/// access to requested DataSegment instances from a single (possibly large)
/// in-memory DataSegment.
class DataSegmentDataSource : public DataSource {
public:
explicit DataSegmentDataSource(
const std::shared_ptr<DataSegment>& shared_data_segment)
: shared_data_segment_(shared_data_segment) {}
void Reset() override;
std::shared_ptr<DataSegment> GetDataSegment(size_t begin,
size_t min_size) override;
TransferDataResult TransferData(const DataRange& data_range, size_t best_size,
DataDestination* data_destination) override;
private:
std::shared_ptr<DataSegment> shared_data_segment_;
};
} // namespace image_io
} // namespace photos_editing_formats
#endif // IMAGE_IO_BASE_DATA_SEGMENT_DATA_SOURCE_H_ // NOLINT
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