/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef INCLUDED_VCL_SOURCE_FILTER_JPEG_JPEGREADER_HXX
#define INCLUDED_VCL_SOURCE_FILTER_JPEG_JPEGREADER_HXX

#include <vcl/graph.hxx>
#include <vcl/bitmap.hxx>
#include <vcl/fltcall.hxx>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/task/XStatusIndicator.hpp>

enum class GraphicFilterImportFlags;

enum ReadState
{
    JPEGREAD_OK,
    JPEGREAD_ERROR,
    JPEGREAD_NEED_MORE
};

struct JPEGCreateBitmapParam
{
    unsigned long nWidth;
    unsigned long nHeight;
    unsigned long density_unit;
    unsigned long X_density;
    unsigned long Y_density;

    bool bGray;
};

class JPEGReader : public GraphicReader
{
    SvStream&           mrStream;
    std::unique_ptr<Bitmap> mpBitmap;
    std::unique_ptr<Bitmap> mpIncompleteAlpha;

    long                mnLastPos;
    long                mnLastLines;
    bool                mbSetLogSize;

    Graphic CreateIntermediateGraphic(long nLines);

public:
            JPEGReader( SvStream& rStream, GraphicFilterImportFlags nImportFlags );
    virtual ~JPEGReader() override;

    ReadState Read(Graphic& rGraphic, GraphicFilterImportFlags nImportFlags, Bitmap::ScopedWriteAccess* ppAccess);

    bool CreateBitmap(JPEGCreateBitmapParam const & param);

    Bitmap& GetBitmap() { return *mpBitmap; }
};

#endif // INCLUDED_VCL_SOURCE_FILTER_JPEG_JPEGREADER_HXX

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