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Diffstat (limited to 'extern/audaspace/src/sequence/DoubleReader.cpp')
-rw-r--r-- | extern/audaspace/src/sequence/DoubleReader.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/extern/audaspace/src/sequence/DoubleReader.cpp b/extern/audaspace/src/sequence/DoubleReader.cpp new file mode 100644 index 00000000000..33ab34ce366 --- /dev/null +++ b/extern/audaspace/src/sequence/DoubleReader.cpp @@ -0,0 +1,102 @@ +/******************************************************************************* + * 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 |