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| 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 |
| 7 #ifndef CORE_FXCODEC_CODEC_CCODEC_SCANLINEDECODER_H_ |
| 8 #define CORE_FXCODEC_CODEC_CCODEC_SCANLINEDECODER_H_ |
| 9 |
| 10 #include "core/fxcrt/include/fx_system.h" |
| 11 |
| 12 class IFX_Pause; |
| 13 |
| 14 class CCodec_ScanlineDecoder { |
| 15 public: |
| 16 CCodec_ScanlineDecoder(); |
| 17 virtual ~CCodec_ScanlineDecoder(); |
| 18 |
| 19 const uint8_t* GetScanline(int line); |
| 20 FX_BOOL SkipToScanline(int line, IFX_Pause* pPause); |
| 21 |
| 22 int GetWidth() { return m_OutputWidth; } |
| 23 int GetHeight() { return m_OutputHeight; } |
| 24 int CountComps() { return m_nComps; } |
| 25 int GetBPC() { return m_bpc; } |
| 26 |
| 27 virtual uint32_t GetSrcOffset() = 0; |
| 28 |
| 29 protected: |
| 30 virtual FX_BOOL v_Rewind() = 0; |
| 31 virtual uint8_t* v_GetNextLine() = 0; |
| 32 |
| 33 uint8_t* ReadNextLine(); |
| 34 |
| 35 int m_OrigWidth; |
| 36 int m_OrigHeight; |
| 37 int m_OutputWidth; |
| 38 int m_OutputHeight; |
| 39 int m_nComps; |
| 40 int m_bpc; |
| 41 uint32_t m_Pitch; |
| 42 int m_NextLine; |
| 43 uint8_t* m_pLastScanline; |
| 44 }; |
| 45 |
| 46 #endif // CORE_FXCODEC_CODEC_CCODEC_SCANLINEDECODER_H_ |
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