1 // Copyright 2017 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/fpdfapi/page/cpdf_psfunc.h" 8 9 #include "core/fpdfapi/parser/cpdf_stream_acc.h" 10 #include "third_party/base/ptr_util.h" 11 12 CPDF_PSFunc::CPDF_PSFunc() : CPDF_Function(Type::kType4PostScript) {} 13 14 CPDF_PSFunc::~CPDF_PSFunc() {} 15 16 bool CPDF_PSFunc::v_Init(CPDF_Object* pObj) { 17 auto pAcc = pdfium::MakeRetain<CPDF_StreamAcc>(pObj->AsStream()); 18 pAcc->LoadAllDataFiltered(); 19 return m_PS.Parse(reinterpret_cast<const char*>(pAcc->GetData()), 20 pAcc->GetSize()); 21 } 22 23 bool CPDF_PSFunc::v_Call(float* inputs, float* results) const { 24 CPDF_PSEngine& PS = const_cast<CPDF_PSEngine&>(m_PS); 25 PS.Reset(); 26 for (uint32_t i = 0; i < m_nInputs; i++) 27 PS.Push(inputs[i]); 28 PS.Execute(); 29 if (PS.GetStackSize() < m_nOutputs) 30 return false; 31 for (uint32_t i = 0; i < m_nOutputs; i++) 32 results[m_nOutputs - i - 1] = PS.Pop(); 33 return true; 34 } 35
