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// Copyright 2014 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_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_
#define CORE_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_
#include "../fxcrt/fx_system.h"
class IFX_JpegProvider
{
public:
virtual void Release() = 0;
virtual void* CreateDecoder(const uint8_t* src_buf, FX_DWORD src_size, int width, int height, int nComps, bool ColorTransform) = 0;
virtual void DestroyDecoder(void* pDecoder) = 0;
virtual void DownScale(void* pDecoder, int dest_width, int dest_height) = 0;
virtual bool Rewind(void* pDecoder) = 0;
virtual uint8_t* GetNextLine(void* pDecoder) = 0;
virtual FX_DWORD GetSrcOffset(void* pDecoder) = 0;
virtual bool LoadInfo(const uint8_t* src_buf, FX_DWORD src_size, int& width, int& height,
int& num_components, int& bits_per_components, bool& color_transform,
uint8_t** icc_buf_ptr = NULL, FX_DWORD* icc_length = NULL) = 0;
virtual bool Encode(const class CFX_DIBSource* pSource, uint8_t*& dest_buf, FX_STRSIZE& dest_size, int quality = 75,
const uint8_t* icc_buf = NULL, FX_DWORD icc_length = 0) = 0;
virtual void* Start() = 0;
virtual void Finish(void* pContext) = 0;
virtual void Input(void* pContext, const uint8_t* src_buf, FX_DWORD src_size) = 0;
virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps) = 0;
virtual int StartScanline(void* pContext, int down_scale) = 0;
virtual bool ReadScanline(void* pContext, uint8_t* dest_buf) = 0;
virtual FX_DWORD GetAvailInput(void* pContext, uint8_t** avail_buf_ptr = NULL) = 0;
protected:
~IFX_JpegProvider() { }
};
#endif // CORE_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_
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