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// Copyright 2017 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
#include "core/fpdfapi/page/cpdf_psfunc.h"
#include "core/fpdfapi/parser/cpdf_stream_acc.h"
#include "third_party/base/ptr_util.h"
CPDF_PSFunc::CPDF_PSFunc() : CPDF_Function(Type::kType4PostScript) {}
CPDF_PSFunc::~CPDF_PSFunc() {}
bool CPDF_PSFunc::v_Init(CPDF_Object* pObj, std::set<CPDF_Object*>* pVisited) {
auto pAcc = pdfium::MakeRetain<CPDF_StreamAcc>(pObj->AsStream());
pAcc->LoadAllDataFiltered();
return m_PS.Parse(pAcc->GetSpan());
}
bool CPDF_PSFunc::v_Call(const float* inputs, float* results) const {
CPDF_PSEngine& PS = const_cast<CPDF_PSEngine&>(m_PS);
PS.Reset();
for (uint32_t i = 0; i < m_nInputs; i++)
PS.Push(inputs[i]);
PS.Execute();
if (PS.GetStackSize() < m_nOutputs)
return false;
for (uint32_t i = 0; i < m_nOutputs; i++)
results[m_nOutputs - i - 1] = PS.Pop();
return true;
}
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