gecko/modules/libpr0n/decoders/nsPNGDecoder.h

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 * Contributor(s):
 *   Stuart Parmenter <pavlov@netscape.com>
 *   Bobby Holley <bobbyholley@gmail.com>
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#ifndef nsPNGDecoder_h__
#define nsPNGDecoder_h__

#include "imgIDecoder.h"

#include "imgIContainer.h"
#include "imgIDecoderObserver.h"
#include "gfxASurface.h"

#include "nsCOMPtr.h"

#include "png.h"

#include "qcms.h"

namespace mozilla {
namespace imagelib {
class RasterImage;
} // namespace imagelib
} // namespace mozilla

class nsPNGDecoder : public imgIDecoder
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_IMGIDECODER

  nsPNGDecoder();
  virtual ~nsPNGDecoder();

  void CreateFrame(png_uint_32 x_offset, png_uint_32 y_offset,
                   PRInt32 width, PRInt32 height,
                   gfxASurface::gfxImageFormat format);
  void SetAnimFrameInfo();

  void EndImageFrame();
  void NotifyDone(PRBool aSuccess);

public:
  nsRefPtr<mozilla::imagelib::RasterImage> mImage;
  nsCOMPtr<imgIDecoderObserver> mObserver;
  PRUint32 mFlags;

  png_structp mPNG;
  png_infop mInfo;
  nsIntRect mFrameRect;
  PRUint8 *mCMSLine;
  PRUint8 *interlacebuf;
  PRUint8 *mImageData;
  qcms_profile *mInProfile;
  qcms_transform *mTransform;

  gfxASurface::gfxImageFormat format;

  // For header-only decodes
  PRUint8 *mHeaderBuf;
  PRUint32 mHeaderBytesRead;

  PRUint8 mChannels;
  PRPackedBool mError;
  PRPackedBool mFrameHasNoAlpha;
  PRPackedBool mFrameIsHidden;
  PRPackedBool mNotifiedDone;
};

#endif // nsPNGDecoder_h__