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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_PNGMODULE_H_
#define CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_
#include <memory>
#include "core/fxcodec/codec/codec_module_iface.h"
#include "core/fxcrt/fx_system.h"
class CFX_DIBAttribute;
class CCodec_PngModule final : public CodecModuleIface {
public:
class Delegate {
public:
virtual bool PngReadHeader(int width,
int height,
int bpc,
int pass,
int* color_type,
double* gamma) = 0;
// Returns true on success. |pSrcBuf| will be set if this succeeds.
// |pSrcBuf| does not take ownership of the buffer.
virtual bool PngAskScanlineBuf(int line, uint8_t** pSrcBuf) = 0;
virtual void PngFillScanlineBufCompleted(int pass, int line) = 0;
};
// CodecModuleIface:
FX_FILESIZE GetAvailInput(Context* pContext) const override;
bool Input(Context* pContext,
RetainPtr<CFX_CodecMemory> codec_memory,
CFX_DIBAttribute* pAttribute) override;
std::unique_ptr<Context> Start(Delegate* pDelegate);
};
#endif // CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_
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