YiImageDecoderJPG.h

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// © You i Labs Inc. 2000-2017. All rights reserved.
#ifndef _YI_DECODER_JPG_H_
#define _YI_DECODER_JPG_H_

#include "asset/YiImageDecoder.h"

class CYIBitmap;
class CYIBitmapPriv;
class CYIImageDecoderJPGPriv;

class CYIImageDecoderJPG : public CYIImageDecoder
{
    friend class CYIImageDecoderJPGPriv;
public:
    CYIImageDecoderJPG();
    virtual ~CYIImageDecoderJPG();

    virtual bool GetImageDimensions(const CYIString &path, uint32_t *pnWidth, uint32_t *pnHeight) override;

protected:
    virtual std::unique_ptr<CYIBitmap> DecodeImpl(const CYIString &path, YI_DECODER_BITMAP_PARAMS *pParams) override;

    virtual std::unique_ptr<CYIBitmap> DecodeImpl(const uint8_t *fileData, uint32_t nDataSize, YI_DECODER_BITMAP_PARAMS *pParams) override;

private:
    CYIBitmapPriv *DoDecompression(struct jpeg_decompress_struct &cinfo, CYIBitmap *buffer, int32_t nX, int32_t nY);

    CYIImageDecoderJPGPriv *m_pPriv;

    YI_DISALLOW_COPY_AND_ASSIGN(CYIImageDecoderJPG)
};

#endif // _YI_DECODER_JPG_H_