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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_GIFMODULE_H_
#define CORE_FXCODEC_CODEC_ICODEC_GIFMODULE_H_
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_system.h"
class CFX_DIBAttribute;
struct FXGIF_Context;
// Virtual interface to avoid linking in a concrete implementation
// if we do not enable this codec.
class ICodec_GifModule {
public:
class Delegate {
public:
virtual void GifRecordCurrentPosition(uint32_t& cur_pos) = 0;
virtual uint8_t* GifAskLocalPaletteBuf(int32_t frame_num,
int32_t pal_size) = 0;
virtual bool GifInputRecordPositionBuf(uint32_t rcd_pos,
const FX_RECT& img_rc,
int32_t pal_num,
void* pal_ptr,
int32_t delay_time,
bool user_input,
int32_t trans_index,
int32_t disposal_method,
bool interlace) = 0;
virtual void GifReadScanline(int32_t row_num, uint8_t* row_buf) = 0;
};
virtual ~ICodec_GifModule() {}
virtual FXGIF_Context* Start() = 0;
virtual void Finish(FXGIF_Context* pContext) = 0;
virtual uint32_t GetAvailInput(FXGIF_Context* pContext,
uint8_t** avail_buf_ptr = nullptr) = 0;
virtual void Input(FXGIF_Context* pContext,
const uint8_t* src_buf,
uint32_t src_size) = 0;
virtual int32_t ReadHeader(FXGIF_Context* pContext,
int* width,
int* height,
int* pal_num,
void** pal_pp,
int* bg_index,
CFX_DIBAttribute* pAttribute) = 0;
virtual int32_t LoadFrameInfo(FXGIF_Context* pContext, int* frame_num) = 0;
virtual int32_t LoadFrame(FXGIF_Context* pContext,
int frame_num,
CFX_DIBAttribute* pAttribute) = 0;
Delegate* GetDelegate() const { return m_pDelegate; }
void SetDelegate(Delegate* pDelegate) { m_pDelegate = pDelegate; }
protected:
Delegate* m_pDelegate;
};
#endif // CORE_FXCODEC_CODEC_ICODEC_GIFMODULE_H_
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