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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef CORE_FXCODEC_CODEC_CCODEC_SCANLINEDECODER_H_
#define CORE_FXCODEC_CODEC_CCODEC_SCANLINEDECODER_H_
#include "core/fxcrt/fx_system.h"
class IFX_Pause;
class CCodec_ScanlineDecoder {
public:
CCodec_ScanlineDecoder();
CCodec_ScanlineDecoder(int nOrigWidth,
int nOrigHeight,
int nOutputWidth,
int nOutputHeight,
int nComps,
int nBpc,
uint32_t nPitch);
virtual ~CCodec_ScanlineDecoder();
const uint8_t* GetScanline(int line);
FX_BOOL SkipToScanline(int line, IFX_Pause* pPause);
int GetWidth() { return m_OutputWidth; }
int GetHeight() { return m_OutputHeight; }
int CountComps() { return m_nComps; }
int GetBPC() { return m_bpc; }
virtual uint32_t GetSrcOffset() = 0;
protected:
virtual FX_BOOL v_Rewind() = 0;
virtual uint8_t* v_GetNextLine() = 0;
uint8_t* ReadNextLine();
int m_OrigWidth;
int m_OrigHeight;
int m_OutputWidth;
int m_OutputHeight;
int m_nComps;
int m_bpc;
uint32_t m_Pitch;
int m_NextLine;
uint8_t* m_pLastScanline;
};
#endif // CORE_FXCODEC_CODEC_CCODEC_SCANLINEDECODER_H_
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