PictureData.h

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#pragma once
 
#include "Frame/picture_basics.h"
#include "Math/TVector2.h"
#include "Frame/frame_fwd.h"
#include "Utility/TSpan.h"
 
#include <Common/primitive_type.h>
 
#include <cstddef>
#include <memory>
 
namespace ph
{
 
class PictureData final
{
public:
    PictureData();
 
    PictureData(
        math::Vector2S sizePx,
        std::size_t numPicComponents,
        EPicturePixelComponent componentType);
 
    template<typename PixelData>
    PictureData(
        math::Vector2S sizePx,
        std::size_t numPicComponents,
        EPicturePixelComponent componentType,
        const PixelData* pixelData,
        std::size_t pixelDataSize);
 
    PictureData(PictureData&& other);
 
    const math::Vector2S& getSizePx() const;
    std::size_t getWidthPx() const;
    std::size_t getHeightPx() const;
    std::size_t numComponents() const;
    EPicturePixelComponent getComponentType() const;
    TSpan<std::byte> getBytes();
    TSpanView<std::byte> getBytes() const;
    bool isEmpty() const;
 
    template<typename PixelData>
    void setPixels(
        const PixelData* pixelData,
        std::size_t numPixelDataElements);
 
    // TODO: option for allow/disallow lossy conversion?
    template<typename FrameComponent, std::size_t N>
    TFrame<FrameComponent, N> toFrame() const;
 
    PictureData& operator = (PictureData&& rhs);
 
private:
    template<typename PictureComponent, typename FrameComponent, std::size_t N>
    TFrame<FrameComponent, N> pictureToFrame() const;
 
    template<typename PictureComponent>
    std::size_t getByteIndex(std::size_t xPx, std::size_t yPx, std::size_t componentIndex) const;
 
    math::Vector2S m_sizePx;
    std::size_t m_numComponents;
    EPicturePixelComponent m_componentType;
    std::unique_ptr<std::byte[]> m_data;
    std::size_t m_numBytesInData;
};
 
}// end namespace ph
 
#include "Frame/PictureData.ipp"