1 // Copyright 2016 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_ 8 #define CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_ 9 10 #include <memory> 11 12 #include "core/fxcrt/fx_system.h" 13 14 class CCodec_ScanlineDecoder; 15 class CFX_DIBSource; 16 struct FXJPEG_Context; 17 18 #ifdef PDF_ENABLE_XFA 19 class CFX_DIBAttribute; 20 #endif // PDF_ENABLE_XFA 21 22 class CCodec_JpegModule { 23 public: 24 CCodec_JpegModule() {} 25 26 std::unique_ptr<CCodec_ScanlineDecoder> CreateDecoder(const uint8_t* src_buf, 27 uint32_t src_size, 28 int width, 29 int height, 30 int nComps, 31 bool ColorTransform); 32 bool LoadInfo(const uint8_t* src_buf, 33 uint32_t src_size, 34 int* width, 35 int* height, 36 int* num_components, 37 int* bits_per_components, 38 bool* color_transform); 39 FXJPEG_Context* Start(); 40 void Finish(FXJPEG_Context* pContext); 41 void Input(FXJPEG_Context* pContext, 42 const uint8_t* src_buf, 43 uint32_t src_size); 44 45 #ifndef PDF_ENABLE_XFA 46 int ReadHeader(FXJPEG_Context* pContext, 47 int* width, 48 int* height, 49 int* nComps); 50 #else // PDF_ENABLE_XFA 51 int ReadHeader(FXJPEG_Context* pContext, 52 int* width, 53 int* height, 54 int* nComps, 55 CFX_DIBAttribute* pAttribute); 56 #endif // PDF_ENABLE_XFA 57 58 bool StartScanline(FXJPEG_Context* pContext, int down_scale); 59 bool ReadScanline(FXJPEG_Context* pContext, uint8_t* dest_buf); 60 uint32_t GetAvailInput(FXJPEG_Context* pContext, uint8_t** avail_buf_ptr); 61 62 #if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_ 63 static bool JpegEncode(const CFX_DIBSource* pSource, 64 uint8_t** dest_buf, 65 FX_STRSIZE* dest_size); 66 #endif 67 }; 68 69 #endif // CORE_FXCODEC_CODEC_CCODEC_JPEGMODULE_H_ 70
