botw/lib/NintendoSDK/include/nn/image.h

/**
 * @file image.h
 * @brief JPEG decoding library.
 */

#pragma once

#include <nn/types.h>

namespace nn {
namespace image {
// there's probably more
enum JpegStatus {
    OK = 0,
    INVALID_FORMAT = -32,
    UNSUPPORTED_FORMAT = -33,
    OUT_OF_MEMORY = -64,
};

enum PixelFormat { RGBA32, RGB24 };

enum ProcessStage { UNREGISTERED = 0, REGISTERED = 1, ANALYZED = 2 };

struct Dimension {
    f32 width;
    f32 height;
};

class JpegDecoder {
public:
    JpegDecoder();
    virtual ~JpegDecoder();

    void SetImageData(void const* source, u64 size);
    nn::image::JpegStatus Analyze();
    nn::image::Dimension GetAnalyzedDimension() const;
    s64 GetAnalyzedWorkBufferSize() const;
    JpegStatus Decode(void* out, s64, s32 alignment, void*, s64);

    nn::image::ProcessStage mProcessStage;  // _8
    void* mData;                            // _C
    s64 mSize;                              // _14
    s32 _18;
    nn::image::PixelFormat mFormat;  // _1C
    Dimension mImgDimensions;        // _20
    s64 _28;
    // rest is related to EXIF processing
};
};  // namespace image
};  // namespace nn