void AudioRenderer::SetClock(IReferenceClock* pClock)
{
CAutoLock objectLock(this);
m_graphClock = pClock;
if (m_graphClock && !IsEqualObject(m_graphClock, m_myClock.GetOwner()))
{
if (!m_externalClock)
ClearDevice();
m_externalClock = true;
}
else
{
if (m_externalClock)
ClearDevice();
m_externalClock = false;
}
}
void AudioRenderer::CreateDevice()
{
CAutoLock objectLock(this);
assert(!m_device);
assert(m_inputFormat);
m_deviceSettingsSerial = m_settings->GetSerial();
m_defaultDeviceSerial = m_deviceManager.GetDefaultDeviceSerial();
m_device = m_deviceManager.CreateDevice(m_inputFormat, m_live || m_externalClock, m_settings);
if (m_device)
{
m_sampleCorrection.NewDeviceBuffer();
InitializeProcessors();
m_startClockOffset = m_sampleCorrection.GetLastFrameEnd();
if (m_state == State_Running)
StartDevice();
}
}
void AudioRenderer::InitializeProcessors()
{
CAutoLock objectLock(this);
assert(m_inputFormat);
assert(m_device);
if (m_device->IsBitstream())
return;
const auto inRate = m_inputFormat->nSamplesPerSec;
const auto inChannels = m_inputFormat->nChannels;
const auto inMask = DspMatrix::GetChannelMask(*m_inputFormat);
const auto outRate = m_device->GetWaveFormat()->nSamplesPerSec;
const auto outChannels = m_device->GetWaveFormat()->nChannels;
const auto outMask = DspMatrix::GetChannelMask(*m_device->GetWaveFormat());
m_dspMatrix.Initialize(inChannels, inMask, outChannels, outMask);
m_dspRate.Initialize(m_live || m_externalClock, inRate, outRate, outChannels);
m_dspRealtimeRate.Initialize(m_live || m_externalClock, inRate, outRate, outChannels);
m_dspTempo.Initialize(m_rate, outRate, outChannels);
m_dspCrossfeed.Initialize(m_settings, outRate, outChannels, outMask);
m_dspLimiter.Initialize(outRate, outChannels, m_device->IsExclusive());
m_dspDither.Initialize(m_device->GetDspFormat());
}
void detachThread(Thread *thread) {
Object *group, *excep;
//ExecEnv *ee = thread->ee;
//Object *jThread = ee->thread;
Object *jThread = thread->thread;
Object *vmthread = (Object*)INST_DATA(jThread)[vmthread_offset];
/* Get the thread's group */
group = (Object *)INST_DATA(jThread)[group_offset];
/* If there's an uncaught exception, call uncaughtException on the thread's
exception handler, or the thread's group if this is unset */
if((excep = exceptionOccurred())) {
FieldBlock *fb = findField(thread_class, SYMBOL(exceptionHandler),
SYMBOL(sig_java_lang_Thread_UncaughtExceptionHandler));
Object *thread_handler = fb == NULL ? NULL : (Object *)INST_DATA(jThread)[fb->offset];
Object *handler = thread_handler == NULL ? group : thread_handler;
MethodBlock *uncaught_exp = lookupMethod(handler->classobj, SYMBOL(uncaughtException),
SYMBOL(_java_lang_Thread_java_lang_Throwable__V));
if(uncaught_exp) {
clearException();
DummyFrame dummy;
executeMethod(&dummy, handler, uncaught_exp, jThread, excep);
} else
printException();
}
/* remove thread from thread group */
DummyFrame dummy;
executeMethod(&dummy, group, (CLASS_CB(group->classobj))->method_table[rmveThrd_mtbl_idx], jThread);
/* set VMThread ref in Thread object to null - operations after this
point will result in an IllegalThreadStateException */
INST_DATA(jThread)[vmthread_offset] = 0;
/* Remove thread from the ID map hash table */
deleteThreadFromHash(thread);
/* Disable suspend to protect lock operation */
disableSuspend(thread);
/* Grab global lock, and update thread structures protected by
it (thread list, thread ID and number of daemon threads) */
pthread_mutex_lock(&lock);
/* remove from thread list... */
if((thread->prev->next = thread->next))
thread->next->prev = thread->prev;
/* One less live thread */
threads_count--;
/* Recycle the thread's thread ID */
freeThreadID(thread->id);
/* Handle daemon thread status */
if(!INST_DATA(jThread)[daemon_offset])
non_daemon_thrds--;
pthread_mutex_unlock(&lock);
/* notify any threads waiting on VMThread object -
these are joining this thread */
objectLock(vmthread);
objectNotifyAll(vmthread);
objectUnlock(vmthread);
/* It is safe to free the thread's ExecEnv and stack now as these are
only used within the thread. It is _not_ safe to free the native
thread structure as another thread may be concurrently accessing it.
However, they must have a reference to the VMThread -- therefore, it
is safe to free during GC when the VMThread is determined to be no
longer reachable. */
// sysFree(ee->stack);
//sysFree(ee);
/* If no more daemon threads notify the main thread (which
may be waiting to exit VM). Note, this is not protected
by lock, but main thread checks again */
if(non_daemon_thrds == 0) {
/* No need to bother with disabling suspension
* around lock, as we're no longer on thread list */
pthread_mutex_lock(&exit_lock);
pthread_cond_signal(&exit_cv);
pthread_mutex_unlock(&exit_lock);
}
TRACE("Thread 0x%x id: %d detached from VM\n", thread, thread->id);
}
bool AudioRenderer::IsLive()
{
CAutoLock objectLock(this);
return m_live;
}
bool AudioRenderer::OnExternalClock()
{
CAutoLock objectLock(this);
return m_externalClock;
}
void AudioRenderer::ApplyRateCorrection(DspChunk& chunk)
{
CAutoLock objectLock(this);
assert(m_device);
assert(!m_device->IsBitstream());
assert(m_state == State_Running);
if (chunk.IsEmpty())
return;
const REFERENCE_TIME latency = llMulDiv(chunk.GetFrameCount(), OneSecond, chunk.GetRate(), 0) +
m_device->GetStreamLatency() + OneMillisecond * 10;
const REFERENCE_TIME remaining = m_device->GetEnd() - m_device->GetPosition();
REFERENCE_TIME deltaTime = 0;
if (m_live)
{
// Rate matching.
if (remaining > latency)
{
size_t dropFrames = (size_t)llMulDiv(m_device->GetWaveFormat()->nSamplesPerSec,
remaining - latency, OneSecond, 0);
dropFrames = std::min(dropFrames, chunk.GetFrameCount());
chunk.ShrinkHead(chunk.GetFrameCount() - dropFrames);
DebugOut("AudioRenderer drop", dropFrames, "frames for rate matching");
}
}
else
{
// Clock matching.
assert(m_externalClock);
REFERENCE_TIME graphTime, myTime, myStartTime;
if (SUCCEEDED(m_myClock.GetAudioClockStartTime(&myStartTime)) &&
SUCCEEDED(m_myClock.GetAudioClockTime(&myTime, nullptr)) &&
SUCCEEDED(m_graphClock->GetTime(&graphTime)) &&
myTime > myStartTime)
{
myTime -= m_device->GetSilence();
if (myTime > graphTime)
{
// Pad and adjust backwards.
REFERENCE_TIME padTime = myTime - graphTime;
assert(padTime >= 0);
size_t padFrames = (size_t)llMulDiv(m_device->GetWaveFormat()->nSamplesPerSec,
padTime, OneSecond, 0);
if (padFrames > m_device->GetWaveFormat()->nSamplesPerSec / 33) // ~30ms threshold
{
DspChunk tempChunk(chunk.GetFormat(), chunk.GetChannelCount(),
chunk.GetFrameCount() + padFrames, chunk.GetRate());
size_t padBytes = tempChunk.GetFrameSize() * padFrames;
ZeroMemory(tempChunk.GetData(), padBytes);
memcpy(tempChunk.GetData() + padBytes, chunk.GetData(), chunk.GetSize());
chunk = std::move(tempChunk);
REFERENCE_TIME paddedTime = llMulDiv(padFrames, OneSecond,
m_device->GetWaveFormat()->nSamplesPerSec, 0);
m_myClock.OffsetSlavedClock(-paddedTime);
padTime -= paddedTime;
assert(padTime >= 0);
DebugOut("AudioRenderer pad", paddedTime / 10000., "ms for clock matching at",
m_sampleCorrection.GetLastFrameEnd() / 10000., "frame position");
}
// Correct the rest with variable rate.
m_dspRealtimeRate.Adjust(padTime);
m_myClock.OffsetSlavedClock(-padTime);
}
else if (remaining > latency)
{
// Crop and adjust forwards.
assert(myTime <= graphTime);
REFERENCE_TIME dropTime = std::min(graphTime - myTime, remaining - latency);
assert(dropTime >= 0);
size_t dropFrames = (size_t)llMulDiv(m_device->GetWaveFormat()->nSamplesPerSec,
dropTime, OneSecond, 0);
dropFrames = std::min(dropFrames, chunk.GetFrameCount());
if (dropFrames > m_device->GetWaveFormat()->nSamplesPerSec / 33) // ~30ms threshold
{
chunk.ShrinkHead(chunk.GetFrameCount() - dropFrames);
REFERENCE_TIME droppedTime = llMulDiv(dropFrames, OneSecond,
m_device->GetWaveFormat()->nSamplesPerSec, 0);
m_myClock.OffsetSlavedClock(droppedTime);
dropTime -= droppedTime;
assert(dropTime >= 0);
DebugOut("AudioRenderer drop", droppedTime / 10000., "ms for clock matching at",
m_sampleCorrection.GetLastFrameEnd() / 10000., "frame position");
}
// Correct the rest with variable rate.
m_dspRealtimeRate.Adjust(-dropTime);
m_myClock.OffsetSlavedClock(dropTime);
}
}
}
}
SharedWaveFormat AudioRenderer::GetInputFormat()
{
CAutoLock objectLock(this);
return m_inputFormat;
}
bool AudioRenderer::Finish(bool blockUntilEnd, CAMEvent* pFilledEvent)
{
DspChunk chunk;
{
CAutoLock objectLock(this);
assert(m_state != State_Stopped);
// No device - nothing to block on.
if (!m_device)
blockUntilEnd = false;
try
{
// Apply dsp chain.
if (m_device && !m_device->IsBitstream())
{
auto f = [&](DspBase* pDsp)
{
pDsp->Finish(chunk);
};
EnumerateProcessors(f);
DspChunk::ToFormat(m_device->GetDspFormat(), chunk);
}
}
catch (std::bad_alloc&)
{
chunk = DspChunk();
assert(chunk.IsEmpty());
}
}
auto doBlock = [&]
{
// Increase system timer resolution.
TimePeriodHelper timePeriodHelper(1);
for (;;)
{
REFERENCE_TIME remaining = 0;
{
CAutoLock objectLock(this);
if (m_device)
{
try
{
remaining = m_device->Finish(pFilledEvent);
}
catch (HRESULT)
{
ClearDevice();
}
}
}
// The end of stream is reached.
if (remaining <= 0)
return true;
// Sleep until predicted end of stream.
if (m_flush.Wait(std::max(1, (int32_t)(remaining / OneMillisecond))))
return false;
}
};
// Send processed sample to the device, and block until the end of stream (if requested).
return PushToDevice(chunk, pFilledEvent) && (!blockUntilEnd || doBlock());
}
