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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,
FX_BOOL ColorTransform) = 0;
virtual void DestroyDecoder(void* pDecoder) = 0;
virtual void DownScale(void* pDecoder, int dest_width, int dest_height) = 0;
virtual FX_BOOL Rewind(void* pDecoder) = 0;
virtual uint8_t* GetNextLine(void* pDecoder) = 0;
virtual FX_DWORD GetSrcOffset(void* pDecoder) = 0;
virtual FX_BOOL LoadInfo(const uint8_t* src_buf,
FX_DWORD src_size,
int& width,
int& height,
int& num_components,
int& bits_per_components,
FX_BOOL& color_transform,
uint8_t** icc_buf_ptr = NULL,
FX_DWORD* icc_length = NULL) = 0;
virtual FX_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 FX_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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