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extern/audaspace/src/sequence/DoubleReader.cpp
- This file was added.
| /******************************************************************************* | |||||
| * Copyright 2009-2016 Jörg Müller | |||||
| * | |||||
| * Licensed under the Apache License, Version 2.0 (the "License"); | |||||
| * you may not use this file except in compliance with the License. | |||||
| * You may obtain a copy of the License at | |||||
| * | |||||
| * http://www.apache.org/licenses/LICENSE-2.0 | |||||
| * | |||||
| * Unless required by applicable law or agreed to in writing, software | |||||
| * distributed under the License is distributed on an "AS IS" BASIS, | |||||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |||||
| * See the License for the specific language governing permissions and | |||||
| * limitations under the License. | |||||
| ******************************************************************************/ | |||||
| #include "sequence/DoubleReader.h" | |||||
| #include <cstring> | |||||
| AUD_NAMESPACE_BEGIN | |||||
| DoubleReader::DoubleReader(std::shared_ptr<IReader> reader1, std::shared_ptr<IReader> reader2) : | |||||
| m_reader1(reader1), m_reader2(reader2), m_finished1(false) | |||||
| { | |||||
| Specs s1, s2; | |||||
| s1 = reader1->getSpecs(); | |||||
| s2 = reader2->getSpecs(); | |||||
| } | |||||
| DoubleReader::~DoubleReader() | |||||
| { | |||||
| } | |||||
| bool DoubleReader::isSeekable() const | |||||
| { | |||||
| return m_reader1->isSeekable() && m_reader2->isSeekable(); | |||||
| } | |||||
| void DoubleReader::seek(int position) | |||||
| { | |||||
| m_reader1->seek(position); | |||||
| int pos1 = m_reader1->getPosition(); | |||||
| if((m_finished1 = (pos1 < position))) | |||||
| m_reader2->seek(position - pos1); | |||||
| else | |||||
| m_reader2->seek(0); | |||||
| } | |||||
| int DoubleReader::getLength() const | |||||
| { | |||||
| int len1 = m_reader1->getLength(); | |||||
| int len2 = m_reader2->getLength(); | |||||
| if(len1 < 0 || len2 < 0) | |||||
| return -1; | |||||
| return len1 + len2; | |||||
| } | |||||
| int DoubleReader::getPosition() const | |||||
| { | |||||
| return m_reader1->getPosition() + m_reader2->getPosition(); | |||||
| } | |||||
| Specs DoubleReader::getSpecs() const | |||||
| { | |||||
| return m_finished1 ? m_reader1->getSpecs() : m_reader2->getSpecs(); | |||||
| } | |||||
| void DoubleReader::read(int& length, bool& eos, sample_t* buffer) | |||||
| { | |||||
| eos = false; | |||||
| if(!m_finished1) | |||||
| { | |||||
| int len = length; | |||||
| m_reader1->read(len, m_finished1, buffer); | |||||
| if(len < length) | |||||
| { | |||||
| Specs specs1, specs2; | |||||
| specs1 = m_reader1->getSpecs(); | |||||
| specs2 = m_reader2->getSpecs(); | |||||
| if(AUD_COMPARE_SPECS(specs1, specs2)) | |||||
| { | |||||
| int len2 = length - len; | |||||
| m_reader2->read(len2, eos, buffer + specs1.channels * len); | |||||
| length = len + len2; | |||||
| } | |||||
| else | |||||
| length = len; | |||||
| } | |||||
| } | |||||
| else | |||||
| { | |||||
| m_reader2->read(length, eos, buffer); | |||||
| } | |||||
| } | |||||
| AUD_NAMESPACE_END | |||||