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// 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_
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