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Remove waiting for stream closure in multi-thread audio

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This commit is contained in:
erorcun 2021-06-27 14:42:52 +03:00
parent 05a29c7e6c
commit 3587cb029e
2 changed files with 22 additions and 20 deletions
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38
src/audio/oal/stream.cpp
View file

@ -36,6 +36,7 @@ std::mutex gAudioThreadQueueMutex;
std::condition_variable gAudioThreadCv;
bool gAudioThreadTerm = false;
std::queue<CStream*> gStreamsToProcess; // values are not unique, we will handle that ourself
std::queue<std::pair<IDecoder*, void*>> gStreamsToClose;
#else
#include "stream.h"
#endif
@ -1083,7 +1084,11 @@ CStream::FlagAsToBeProcessed(bool close)
return;
gAudioThreadQueueMutex.lock();
if (close)
gStreamsToClose.push(std::pair<IDecoder*, void*>(m_pSoundFile ? m_pSoundFile : nil, m_pBuffer ? m_pBuffer : nil));
else
gStreamsToProcess.push(this);
gAudioThreadQueueMutex.unlock();
gAudioThreadCv.notify_one();
@ -1097,10 +1102,22 @@ void audioFileOpsThread()
{
// Just a semaphore
std::unique_lock<std::mutex> queueMutex(gAudioThreadQueueMutex);
gAudioThreadCv.wait(queueMutex, [] { return gStreamsToProcess.size() > 0 || gAudioThreadTerm; });
gAudioThreadCv.wait(queueMutex, [] { return gStreamsToProcess.size() > 0 || gStreamsToClose.size() > 0 || gAudioThreadTerm; });
if (gAudioThreadTerm)
return;
if (!gStreamsToClose.empty()) {
auto streamToClose = gStreamsToClose.front();
gStreamsToClose.pop();
if (streamToClose.first) { // pSoundFile
delete streamToClose.first;
}
if (streamToClose.second) { // pBuffer
free(streamToClose.second);
}
}
if (!gStreamsToProcess.empty()) {
stream = gStreamsToProcess.front();
gStreamsToProcess.pop();
@ -1115,18 +1132,6 @@ void audioFileOpsThread()
do {
if (!stream->IsOpened()) {
// We MUST do that here, because we release mutex for m_pSoundFile->Seek() and m_pSoundFile->Decode() since they're costly
if (stream->m_pSoundFile) {
delete stream->m_pSoundFile;
stream->m_pSoundFile = nil;
}
if (stream->m_pBuffer) {
free(stream->m_pBuffer);
stream->m_pBuffer = nil;
}
lock.unlock();
stream->m_closeCv.notify_one();
break;
}
@ -1237,10 +1242,6 @@ bool CStream::Open(const char* filename, uint32 overrideSampleRate)
#ifdef MULTITHREADED_AUDIO
std::unique_lock<std::mutex> lock(m_mutex);
CStream *stream = this;
// Wait for thread to close old one. We can't close it here, because the thread might be running Decode() or Seek(), while mutex is released
m_closeCv.wait(lock, [this] { return m_pSoundFile == nil && m_pBuffer == nil; });
m_bDoSeek = false;
m_SeekPos = 0;
#endif
@ -1328,7 +1329,8 @@ void CStream::Close()
Stop();
ClearBuffers();
m_bIExist = false;
// clearing buffer queues are not needed. after m_bIExist is cleared, this stream is ded
std::queue<std::pair<ALuint, ALuint>>().swap(m_fillBuffers);
tsQueue<std::pair<ALuint, ALuint>>().swapNts(m_queueBuffers); // TSness not required, mutex is acquired
}
FlagAsToBeProcessed(true);

2
src/audio/oal/stream.h
View file

@ -127,7 +127,7 @@ public:
std::mutex m_mutex;
std::queue<std::pair<ALuint, ALuint>> m_fillBuffers; // left and right buffer
tsQueue<std::pair<ALuint, ALuint>> m_queueBuffers;
std::condition_variable m_closeCv;
// std::condition_variable m_closeCv;
bool m_bDoSeek;
uint32 m_SeekPos;
bool m_bIExist;