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