| // Copyright 2017 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_ICODEC_PNGMODULE_H_ |
| #define CORE_FXCODEC_CODEC_ICODEC_PNGMODULE_H_ |
| |
| #include "core/fxcrt/fx_system.h" |
| |
| class CFX_DIBAttribute; |
| struct FXPNG_Context; |
| |
| // Virtual interface to avoid linking in a concrete implementation |
| // if we do not enable this codec. |
| class ICodec_PngModule { |
| public: |
| class Delegate { |
| public: |
| virtual bool PngReadHeader(int width, |
| int height, |
| int bpc, |
| int pass, |
| int* color_type, |
| double* gamma) = 0; |
| virtual bool PngAskScanlineBuf(int line, uint8_t*& src_buf) = 0; |
| virtual void PngFillScanlineBufCompleted(int pass, int line) = 0; |
| }; |
| |
| virtual ~ICodec_PngModule() {} |
| |
| virtual FXPNG_Context* Start() = 0; |
| virtual void Finish(FXPNG_Context* pContext) = 0; |
| virtual bool Input(FXPNG_Context* pContext, |
| const uint8_t* src_buf, |
| uint32_t src_size, |
| CFX_DIBAttribute* pAttribute) = 0; |
| |
| Delegate* GetDelegate() const { return m_pDelegate; } |
| void SetDelegate(Delegate* delegate) { m_pDelegate = delegate; } |
| |
| protected: |
| Delegate* m_pDelegate; |
| }; |
| |
| #endif // CORE_FXCODEC_CODEC_ICODEC_PNGMODULE_H_ |