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Multi-threaded audio fixes

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This commit is contained in:
erorcun
2021-06-26 23:59:40 +03:00
parent ab38b0089e
commit 05a29c7e6c
4 changed files with 107 additions and 114 deletions
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93
src/audio/oal/stream.cpp
View File

@ -1089,42 +1089,23 @@ CStream::FlagAsToBeProcessed(bool close)
gAudioThreadCv.notify_one();
}
extern CStream *aStream[];
void audioFileOpsThread()
{
std::queue<CStream*> m_streamsToDelete;
do
{
CStream *stream;
{
// Just a semaphore
std::unique_lock<std::mutex> queueMutex(gAudioThreadQueueMutex);
gAudioThreadCv.wait(queueMutex, [m_streamsToDelete] { return gStreamsToProcess.size() > 0 || m_streamsToDelete.size() > 0 || gAudioThreadTerm; });
gAudioThreadCv.wait(queueMutex, [] { return gStreamsToProcess.size() > 0 || gAudioThreadTerm; });
if (gAudioThreadTerm)
return;
if (!gStreamsToProcess.empty()) {
stream = gStreamsToProcess.front();
gStreamsToProcess.pop();
} else {
// End of streams. Perform deleting streams
while(!m_streamsToDelete.empty()) {
CStream *stream = m_streamsToDelete.front();
m_streamsToDelete.pop();
if (stream->m_pSoundFile) {
delete stream->m_pSoundFile;
stream->m_pSoundFile = nil;
}
if (stream->m_pBuffer) {
free(stream->m_pBuffer);
stream->m_pBuffer = nil;
}
delete stream;
}
} else
continue;
}
}
std::unique_lock<std::mutex> lock(stream->m_mutex);
@ -1133,17 +1114,22 @@ void audioFileOpsThread()
bool insertBufsAfterCheck = false;
do {
if (stream->m_nDeleteMe == 1) {
m_streamsToDelete.push(stream);
stream->m_nDeleteMe = 2;
break;
} else if (stream->m_nDeleteMe == 2) {
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;
}
if (!stream->IsOpened())
break;
if (stream->m_bReset)
break;
@ -1223,14 +1209,14 @@ void CStream::Terminate()
#endif
}
CStream::CStream(char *filename, ALuint *sources, ALuint (&buffers)[NUM_STREAMBUFFERS], uint32 overrideSampleRate) :
CStream::CStream(ALuint *sources, ALuint (&buffers)[NUM_STREAMBUFFERS]) :
m_pAlSources(sources),
m_alBuffers(buffers),
m_pBuffer(nil),
m_bPaused(false),
m_bActive(false),
#ifdef MULTITHREADED_AUDIO
m_nDeleteMe(false),
m_bIExist(false),
m_bDoSeek(false),
m_SeekPos(0),
#endif
@ -1242,6 +1228,31 @@ CStream::CStream(char *filename, ALuint *sources, ALuint (&buffers)[NUM_STREAMBU
m_nLoopCount(1)
{
}
bool CStream::Open(const char* filename, uint32 overrideSampleRate)
{
if (IsOpened()) return false;
#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
m_bPaused = false;
m_bActive = false;
m_bReset = false;
m_nVolume = 0;
m_nPan = 0;
m_nPosBeforeReset = 0;
m_nLoopCount = 1;
// Be case-insensitive on linux (from https://github.com/OneSadCookie/fcaseopen/)
#if !defined(_WIN32)
char *real = casepath(filename);
@ -1278,7 +1289,7 @@ CStream::CStream(char *filename, ALuint *sources, ALuint (&buffers)[NUM_STREAMBU
else
m_pSoundFile = nil;
if ( IsOpened() )
if ( m_pSoundFile && m_pSoundFile->IsOpened() )
{
uint32 bufSize = m_pSoundFile->GetBufferSize();
if(bufSize != 0) { // Otherwise it's deferred
@ -1293,8 +1304,12 @@ CStream::CStream(char *filename, ALuint *sources, ALuint (&buffers)[NUM_STREAMBU
DEV("Buffer sec: %f\n", (float(m_pSoundFile->GetBufferSamples()) / float(m_pSoundFile->GetChannels())/ float(m_pSoundFile->GetSampleRate())));
DEV("Length MS: %02d:%02d\n", (m_pSoundFile->GetLength() / 1000) / 60, (m_pSoundFile->GetLength() / 1000) % 60);
}
return;
#ifdef MULTITHREADED_AUDIO
m_bIExist = true;
#endif
return true;
}
return false;
}
CStream::~CStream()
@ -1304,18 +1319,21 @@ CStream::~CStream()
void CStream::Close()
{
if(!IsOpened()) return;
#ifdef MULTITHREADED_AUDIO
{
std::lock_guard<std::mutex> lock(m_mutex);
Stop();
ClearBuffers();
m_nDeleteMe = true;
// clearing buffer queues are not needed. after m_nDeleteMe set, this stream is ded
m_bIExist = false;
// clearing buffer queues are not needed. after m_bIExist is cleared, this stream is ded
}
FlagAsToBeProcessed(true);
#else
Stop();
ClearBuffers();
@ -1338,9 +1356,14 @@ bool CStream::HasSource()
return (m_pAlSources[0] != AL_NONE) && (m_pAlSources[1] != AL_NONE);
}
// m_bIExist only written in main thread, thus mutex is not needed on main thread
bool CStream::IsOpened()
{
#ifdef MULTITHREADED_AUDIO
return m_bIExist;
#else
return m_pSoundFile && m_pSoundFile->IsOpened();
#endif
}
bool CStream::IsPlaying()

7
src/audio/oal/stream.h
View File

@ -127,9 +127,10 @@ 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;
bool m_bDoSeek;
uint32 m_SeekPos;
uint8 m_nDeleteMe; // 1: add to delete list 2: already on delete list
bool m_bIExist;
#endif
void *m_pBuffer;
@ -163,8 +164,10 @@ public:
static void Initialise();
static void Terminate();
CStream(char *filename, ALuint *sources, ALuint (&buffers)[NUM_STREAMBUFFERS], uint32 overrideSampleRate = 32000);
CStream(ALuint *sources, ALuint (&buffers)[NUM_STREAMBUFFERS]);
~CStream();
void Delete();
bool Open(const char *filename, uint32 overrideSampleRate = 32000);
void Close();
bool IsOpened();