103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#include "devices/MixingThreadDevice.h"
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AUD_NAMESPACE_BEGIN
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void MixingThreadDevice::updateRingBuffer()
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{
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unsigned int samplesize = AUD_DEVICE_SAMPLE_SIZE(m_specs);
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std::unique_lock<std::mutex> lock(m_mixingLock);
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while(m_valid)
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{
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{
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std::lock_guard<ILockable> device_lock(*this);
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preMixingWork(m_playback);
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if(m_playback)
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{
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size_t size = m_ringBuffer.getWriteSize();
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size_t sample_count = size / samplesize;
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while(sample_count > 0)
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{
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size = sample_count * samplesize;
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mix(reinterpret_cast<data_t*>(m_mixingBuffer.getBuffer()), sample_count);
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m_ringBuffer.write(reinterpret_cast<data_t*>(m_mixingBuffer.getBuffer()), size);
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sample_count = m_ringBuffer.getWriteSize() / samplesize;
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}
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}
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}
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m_mixingCondition.wait(lock);
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}
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}
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void MixingThreadDevice::startMixingThread(size_t buffersize)
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{
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m_mixingBuffer.resize(buffersize);
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m_ringBuffer.resize(buffersize);
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m_valid = true;
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m_mixingThread = std::thread(&MixingThreadDevice::updateRingBuffer, this);
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}
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void MixingThreadDevice::notifyMixingThread()
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{
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m_mixingCondition.notify_all();
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}
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void MixingThreadDevice::playing(bool playing)
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{
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std::lock_guard<ILockable> lock(*this);
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m_playback = playing;
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if(playing)
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notifyMixingThread();
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}
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void MixingThreadDevice::preMixingWork(bool playing)
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{
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}
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MixingThreadDevice::MixingThreadDevice()
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{
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}
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void aud::MixingThreadDevice::stopMixingThread()
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{
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{
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std::unique_lock<std::mutex> lock(m_mixingLock);
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m_valid = false;
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}
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m_mixingCondition.notify_all();
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m_mixingThread.join();
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}
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AUD_NAMESPACE_END
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