| // 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 _FX_CODEC_PROVIDER_H_ |
| #define _FX_CODEC_PROVIDER_H_ |
| class IFX_JpegProvider |
| { |
| public: |
| |
| virtual void Release() = 0; |
| |
| virtual void* CreateDecoder(FX_LPCBYTE 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 FX_LPBYTE GetNextLine(void* pDecoder) = 0; |
| |
| virtual FX_DWORD GetSrcOffset(void* pDecoder) = 0; |
| |
| |
| virtual FX_BOOL LoadInfo(FX_LPCBYTE src_buf, FX_DWORD src_size, int& width, int& height, |
| int& num_components, int& bits_per_components, FX_BOOL& color_transform, |
| FX_LPBYTE* icc_buf_ptr = NULL, FX_DWORD* icc_length = NULL) = 0; |
| |
| virtual FX_BOOL Encode(const class CFX_DIBSource* pSource, FX_LPBYTE& dest_buf, FX_STRSIZE& dest_size, int quality = 75, |
| FX_LPCBYTE icc_buf = NULL, FX_DWORD icc_length = 0) = 0; |
| |
| virtual void* Start() = 0; |
| |
| virtual void Finish(void* pContext) = 0; |
| |
| virtual void Input(void* pContext, FX_LPCBYTE 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, FX_LPBYTE dest_buf) = 0; |
| |
| |
| virtual FX_DWORD GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr = NULL) = 0; |
| }; |
| #endif |