| // 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_ |