1 // Copyright 2014 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 #include "core/fxcodec/codec/ccodec_bmpmodule.h" 8 9 #include "core/fxcodec/codec/codec_int.h" 10 #include "core/fxcodec/fx_codec.h" 11 #include "core/fxcodec/lbmp/fx_bmp.h" 12 #include "core/fxcrt/unowned_ptr.h" 13 #include "core/fxge/fx_dib.h" 14 #include "third_party/base/ptr_util.h" 15 16 CBmpContext::CBmpContext(CCodec_BmpModule* pModule, 17 CCodec_BmpModule::Delegate* pDelegate) 18 : m_pModule(pModule), m_pDelegate(pDelegate) { 19 } 20 21 CBmpContext::~CBmpContext() {} 22 23 CCodec_BmpModule::CCodec_BmpModule() {} 24 25 CCodec_BmpModule::~CCodec_BmpModule() {} 26 27 std::unique_ptr<CCodec_BmpModule::Context> CCodec_BmpModule::Start( 28 Delegate* pDelegate) { 29 auto p = pdfium::MakeUnique<CBmpContext>(this, pDelegate); 30 p->m_Bmp.context_ptr = p.get(); 31 return p; 32 } 33 34 int32_t CCodec_BmpModule::ReadHeader(Context* pContext, 35 int32_t* width, 36 int32_t* height, 37 bool* tb_flag, 38 int32_t* components, 39 int32_t* pal_num, 40 std::vector<uint32_t>* palette, 41 CFX_DIBAttribute* pAttribute) { 42 auto* ctx = static_cast<CBmpContext*>(pContext); 43 if (setjmp(ctx->m_Bmp.jmpbuf)) 44 return 0; 45 46 int32_t ret = ctx->m_Bmp.ReadHeader(); 47 if (ret != 1) 48 return ret; 49 50 *width = ctx->m_Bmp.width; 51 *height = ctx->m_Bmp.height; 52 *tb_flag = ctx->m_Bmp.imgTB_flag; 53 *components = ctx->m_Bmp.components; 54 *pal_num = ctx->m_Bmp.pal_num; 55 *palette = ctx->m_Bmp.palette; 56 if (pAttribute) { 57 pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER; 58 pAttribute->m_nXDPI = ctx->m_Bmp.dpi_x; 59 pAttribute->m_nYDPI = ctx->m_Bmp.dpi_y; 60 pAttribute->m_nBmpCompressType = ctx->m_Bmp.compress_flag; 61 } 62 return 1; 63 } 64 65 int32_t CCodec_BmpModule::LoadImage(Context* pContext) { 66 auto* ctx = static_cast<CBmpContext*>(pContext); 67 if (setjmp(ctx->m_Bmp.jmpbuf)) 68 return 0; 69 70 return ctx->m_Bmp.DecodeImage(); 71 } 72 73 uint32_t CCodec_BmpModule::GetAvailInput(Context* pContext, 74 uint8_t** avail_buf_ptr) { 75 auto* ctx = static_cast<CBmpContext*>(pContext); 76 return ctx->m_Bmp.GetAvailInput(avail_buf_ptr); 77 } 78 79 void CCodec_BmpModule::Input(Context* pContext, 80 const uint8_t* src_buf, 81 uint32_t src_size) { 82 auto* ctx = static_cast<CBmpContext*>(pContext); 83 ctx->m_Bmp.SetInputBuffer(const_cast<uint8_t*>(src_buf), src_size); 84 } 85
