зеркало из https://github.com/mozilla/gecko-dev.git
1250 строки
44 KiB
C++
1250 строки
44 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/AudioContext.h"
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#include "mozilla/dom/AudioDeviceInfo.h"
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#include "mozilla/dom/BaseAudioContextBinding.h"
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#include "mozilla/dom/WorkletThread.h"
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#include "mozilla/SharedThreadPool.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/Unused.h"
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#include "mozilla/MathAlgorithms.h"
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#include "CubebDeviceEnumerator.h"
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#include "Tracing.h"
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#ifdef MOZ_WEBRTC
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# include "webrtc/MediaEngineWebRTC.h"
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#endif
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#ifdef XP_MACOSX
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# include <sys/sysctl.h>
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#endif
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extern mozilla::LazyLogModule gMediaTrackGraphLog;
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#ifdef LOG
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# undef LOG
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#endif // LOG
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#define LOG(type, msg) MOZ_LOG(gMediaTrackGraphLog, type, msg)
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namespace mozilla {
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GraphDriver::GraphDriver(GraphInterface* aGraphInterface,
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GraphDriver* aPreviousDriver, uint32_t aSampleRate)
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: mGraphInterface(aGraphInterface),
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mSampleRate(aSampleRate),
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mPreviousDriver(aPreviousDriver) {}
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void GraphDriver::SetState(GraphTime aIterationStart, GraphTime aIterationEnd,
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GraphTime aStateComputedTime) {
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MOZ_ASSERT(InIteration() || !ThreadRunning());
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mIterationStart = aIterationStart;
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mIterationEnd = aIterationEnd;
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mStateComputedTime = aStateComputedTime;
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}
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#ifdef DEBUG
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bool GraphDriver::InIteration() {
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return OnThread() || Graph()->InDriverIteration(this);
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}
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#endif
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GraphDriver* GraphDriver::PreviousDriver() {
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MOZ_ASSERT(InIteration() || !ThreadRunning());
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return mPreviousDriver;
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}
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void GraphDriver::SetPreviousDriver(GraphDriver* aPreviousDriver) {
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MOZ_ASSERT(InIteration() || !ThreadRunning());
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mPreviousDriver = aPreviousDriver;
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}
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ThreadedDriver::ThreadedDriver(GraphInterface* aGraphInterface,
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GraphDriver* aPreviousDriver,
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uint32_t aSampleRate)
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: GraphDriver(aGraphInterface, aPreviousDriver, aSampleRate),
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mThreadRunning(false) {}
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class MediaTrackGraphShutdownThreadRunnable : public Runnable {
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public:
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explicit MediaTrackGraphShutdownThreadRunnable(
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already_AddRefed<nsIThread> aThread)
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: Runnable("MediaTrackGraphShutdownThreadRunnable"), mThread(aThread) {}
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NS_IMETHOD Run() override {
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(mThread);
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mThread->Shutdown();
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mThread = nullptr;
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return NS_OK;
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}
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private:
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nsCOMPtr<nsIThread> mThread;
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};
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ThreadedDriver::~ThreadedDriver() {
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if (mThread) {
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nsCOMPtr<nsIRunnable> event =
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new MediaTrackGraphShutdownThreadRunnable(mThread.forget());
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SystemGroup::Dispatch(TaskCategory::Other, event.forget());
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}
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}
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class MediaTrackGraphInitThreadRunnable : public Runnable {
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public:
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explicit MediaTrackGraphInitThreadRunnable(ThreadedDriver* aDriver)
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: Runnable("MediaTrackGraphInitThreadRunnable"), mDriver(aDriver) {}
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NS_IMETHOD Run() override {
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MOZ_ASSERT(!mDriver->ThreadRunning());
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LOG(LogLevel::Debug, ("Starting a new system driver for graph %p",
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mDriver->mGraphInterface.get()));
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if (GraphDriver* previousDriver = mDriver->PreviousDriver()) {
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LOG(LogLevel::Debug,
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("%p releasing an AudioCallbackDriver(%p), for graph %p",
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mDriver.get(), previousDriver, mDriver->Graph()));
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MOZ_ASSERT(!mDriver->AsAudioCallbackDriver());
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RefPtr<AsyncCubebTask> releaseEvent =
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new AsyncCubebTask(previousDriver->AsAudioCallbackDriver(),
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AsyncCubebOperation::SHUTDOWN);
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releaseEvent->Dispatch();
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mDriver->SetPreviousDriver(nullptr);
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}
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mDriver->RunThread();
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return NS_OK;
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}
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private:
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RefPtr<ThreadedDriver> mDriver;
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};
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void ThreadedDriver::Start() {
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MOZ_ASSERT(!ThreadRunning());
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LOG(LogLevel::Debug,
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("Starting thread for a SystemClockDriver %p", mGraphInterface.get()));
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Unused << NS_WARN_IF(mThread);
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MOZ_ASSERT(!mThread); // Ensure we haven't already started it
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nsCOMPtr<nsIRunnable> event = new MediaTrackGraphInitThreadRunnable(this);
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// Note: mThread may be null during event->Run() if we pass to NewNamedThread!
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// See AudioInitTask
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nsresult rv = NS_NewNamedThread("MediaTrackGrph", getter_AddRefs(mThread));
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if (NS_SUCCEEDED(rv)) {
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mThread->EventTarget()->Dispatch(event.forget(), NS_DISPATCH_NORMAL);
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}
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}
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void ThreadedDriver::Shutdown() {
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NS_ASSERTION(NS_IsMainThread(), "Must be called on main thread");
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// mGraph's thread is not running so it's OK to do whatever here
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LOG(LogLevel::Debug, ("Stopping threads for MediaTrackGraph %p", this));
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if (mThread) {
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LOG(LogLevel::Debug,
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("%p: Stopping ThreadedDriver's %p thread", Graph(), this));
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mThread->Shutdown();
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mThread = nullptr;
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}
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}
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SystemClockDriver::SystemClockDriver(GraphInterface* aGraphInterface,
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GraphDriver* aPreviousDriver,
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uint32_t aSampleRate)
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: ThreadedDriver(aGraphInterface, aPreviousDriver, aSampleRate),
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mInitialTimeStamp(TimeStamp::Now()),
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mCurrentTimeStamp(TimeStamp::Now()),
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mLastTimeStamp(TimeStamp::Now()) {}
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SystemClockDriver::~SystemClockDriver() = default;
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void ThreadedDriver::RunThread() {
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mThreadRunning = true;
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while (true) {
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mIterationStart = mIterationEnd;
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mIterationEnd += GetIntervalForIteration();
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if (mStateComputedTime < mIterationEnd) {
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LOG(LogLevel::Warning, ("%p: Global underrun detected", Graph()));
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mIterationEnd = mStateComputedTime;
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}
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if (mIterationStart >= mIterationEnd) {
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NS_ASSERTION(mIterationStart == mIterationEnd,
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"Time can't go backwards!");
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// This could happen due to low clock resolution, maybe?
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LOG(LogLevel::Debug, ("%p: Time did not advance", Graph()));
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}
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GraphTime nextStateComputedTime =
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MediaTrackGraphImpl::RoundUpToEndOfAudioBlock(
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mIterationEnd + MillisecondsToMediaTime(AUDIO_TARGET_MS));
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if (nextStateComputedTime < mStateComputedTime) {
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// A previous driver may have been processing further ahead of
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// iterationEnd.
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LOG(LogLevel::Warning,
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("%p: Prevent state from going backwards. interval[%ld; %ld] "
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"state[%ld; "
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"%ld]",
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Graph(), (long)mIterationStart, (long)mIterationEnd,
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(long)mStateComputedTime, (long)nextStateComputedTime));
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nextStateComputedTime = mStateComputedTime;
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}
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LOG(LogLevel::Verbose,
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("%p: interval[%ld; %ld] state[%ld; %ld]", Graph(),
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(long)mIterationStart, (long)mIterationEnd, (long)mStateComputedTime,
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(long)nextStateComputedTime));
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mStateComputedTime = nextStateComputedTime;
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IterationResult result =
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Graph()->OneIteration(mStateComputedTime, mIterationEnd, nullptr);
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if (result.IsStop()) {
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// Signal that we're done stopping.
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dom::WorkletThread::DeleteCycleCollectedJSContext();
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result.Stopped();
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break;
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}
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WaitForNextIteration();
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if (GraphDriver* nextDriver = result.NextDriver()) {
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LOG(LogLevel::Debug, ("%p: Switching to AudioCallbackDriver", Graph()));
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result.Switched();
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nextDriver->SetState(mIterationStart, mIterationEnd, mStateComputedTime);
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nextDriver->Start();
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break;
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}
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MOZ_ASSERT(result.IsStillProcessing());
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}
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mThreadRunning = false;
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}
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MediaTime SystemClockDriver::GetIntervalForIteration() {
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TimeStamp now = TimeStamp::Now();
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MediaTime interval =
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SecondsToMediaTime((now - mCurrentTimeStamp).ToSeconds());
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mCurrentTimeStamp = now;
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MOZ_LOG(gMediaTrackGraphLog, LogLevel::Verbose,
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("%p: Updating current time to %f (real %f, StateComputedTime() %f)",
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Graph(), MediaTimeToSeconds(mIterationEnd + interval),
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(now - mInitialTimeStamp).ToSeconds(),
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MediaTimeToSeconds(mStateComputedTime)));
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return interval;
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}
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void ThreadedDriver::EnsureNextIteration() {
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mWaitHelper.EnsureNextIteration();
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}
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void ThreadedDriver::WaitForNextIteration() {
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MOZ_ASSERT(mThread);
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MOZ_ASSERT(OnThread());
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mWaitHelper.WaitForNextIterationAtLeast(WaitInterval());
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}
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TimeDuration SystemClockDriver::WaitInterval() {
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MOZ_ASSERT(mThread);
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MOZ_ASSERT(OnThread());
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TimeStamp now = TimeStamp::Now();
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int64_t timeoutMS = MEDIA_GRAPH_TARGET_PERIOD_MS -
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int64_t((now - mCurrentTimeStamp).ToMilliseconds());
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// Make sure timeoutMS doesn't overflow 32 bits by waking up at
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// least once a minute, if we need to wake up at all
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timeoutMS = std::max<int64_t>(0, std::min<int64_t>(timeoutMS, 60 * 1000));
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LOG(LogLevel::Verbose,
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("%p: Waiting for next iteration; at %f, timeout=%f", Graph(),
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(now - mInitialTimeStamp).ToSeconds(), timeoutMS / 1000.0));
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return TimeDuration::FromMilliseconds(timeoutMS);
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}
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OfflineClockDriver::OfflineClockDriver(GraphInterface* aGraphInterface,
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uint32_t aSampleRate, GraphTime aSlice)
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: ThreadedDriver(aGraphInterface, nullptr, aSampleRate), mSlice(aSlice) {}
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OfflineClockDriver::~OfflineClockDriver() = default;
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void OfflineClockDriver::RunThread() {
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nsCOMPtr<nsIThreadInternal> threadInternal = do_QueryInterface(mThread);
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nsCOMPtr<nsIThreadObserver> observer = do_QueryInterface(Graph());
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threadInternal->SetObserver(observer);
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ThreadedDriver::RunThread();
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}
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MediaTime OfflineClockDriver::GetIntervalForIteration() {
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return MillisecondsToMediaTime(mSlice);
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}
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AsyncCubebTask::AsyncCubebTask(AudioCallbackDriver* aDriver,
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AsyncCubebOperation aOperation)
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: Runnable("AsyncCubebTask"),
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mDriver(aDriver),
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mOperation(aOperation),
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mShutdownGrip(aDriver->Graph()) {
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NS_WARNING_ASSERTION(
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mDriver->mAudioStream || aOperation == AsyncCubebOperation::INIT,
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"No audio stream!");
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}
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AsyncCubebTask::~AsyncCubebTask() = default;
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NS_IMETHODIMP
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AsyncCubebTask::Run() {
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MOZ_ASSERT(mDriver);
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switch (mOperation) {
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case AsyncCubebOperation::INIT: {
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LOG(LogLevel::Debug, ("%p: AsyncCubebOperation::INIT driver=%p",
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mDriver->Graph(), mDriver.get()));
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mDriver->Init();
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mDriver->CompleteAudioContextOperations(mOperation);
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break;
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}
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case AsyncCubebOperation::SHUTDOWN: {
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LOG(LogLevel::Debug, ("%p: AsyncCubebOperation::SHUTDOWN driver=%p",
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mDriver->Graph(), mDriver.get()));
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mDriver->Stop();
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mDriver->CompleteAudioContextOperations(mOperation);
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mDriver = nullptr;
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mShutdownGrip = nullptr;
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break;
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}
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default:
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MOZ_CRASH("Operation not implemented.");
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}
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// The thread will kill itself after a bit
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return NS_OK;
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}
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TrackAndPromiseForOperation::TrackAndPromiseForOperation(
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MediaTrack* aTrack, dom::AudioContextOperation aOperation,
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AbstractThread* aMainThread,
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MozPromiseHolder<MediaTrackGraph::AudioContextOperationPromise>&& aHolder)
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: mTrack(aTrack),
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mOperation(aOperation),
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mMainThread(aMainThread),
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mHolder(std::move(aHolder)) {}
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TrackAndPromiseForOperation::TrackAndPromiseForOperation(
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TrackAndPromiseForOperation&& aOther) noexcept
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: mTrack(std::move(aOther.mTrack)),
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mOperation(aOther.mOperation),
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mMainThread(std::move(aOther.mMainThread)),
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mHolder(std::move(aOther.mHolder)) {}
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/* Helper to proxy the GraphInterface methods used by a running
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* mFallbackDriver. */
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class AudioCallbackDriver::FallbackWrapper : public GraphInterface {
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public:
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FallbackWrapper(RefPtr<GraphInterface> aGraph,
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RefPtr<AudioCallbackDriver> aOwner, uint32_t aSampleRate,
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GraphTime aIterationStart, GraphTime aIterationEnd,
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GraphTime aStateComputedTime)
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: mGraph(std::move(aGraph)),
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mOwner(std::move(aOwner)),
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mFallbackDriver(
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MakeRefPtr<SystemClockDriver>(this, nullptr, aSampleRate)),
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mIterationStart(aIterationStart),
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mIterationEnd(aIterationEnd),
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mStateComputedTime(aStateComputedTime) {
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mFallbackDriver->SetState(mIterationStart, mIterationEnd,
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mStateComputedTime);
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}
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NS_DECL_THREADSAFE_ISUPPORTS
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/* Proxied SystemClockDriver methods */
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void SetState(GraphTime aIterationStart, GraphTime aIterationEnd,
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GraphTime aStateComputedTime) {
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mIterationStart = aIterationStart;
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mIterationEnd = aIterationEnd;
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mStateComputedTime = aStateComputedTime;
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mFallbackDriver->SetState(aIterationStart, aIterationEnd,
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aStateComputedTime);
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}
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void Start() { mFallbackDriver->Start(); }
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MOZ_CAN_RUN_SCRIPT void Shutdown() {
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RefPtr<SystemClockDriver> driver = mFallbackDriver;
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driver->Shutdown();
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}
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void EnsureNextIteration() { mFallbackDriver->EnsureNextIteration(); }
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#ifdef DEBUG
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bool InIteration() { return mFallbackDriver->InIteration(); }
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#endif
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bool OnThread() { return mFallbackDriver->OnThread(); }
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/* GraphInterface methods */
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void NotifyOutputData(AudioDataValue* aBuffer, size_t aFrames,
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TrackRate aRate, uint32_t aChannels) override {
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MOZ_CRASH("Unexpected NotifyOutputData from fallback SystemClockDriver");
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}
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void NotifyStarted() override {
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MOZ_CRASH("Unexpected NotifyStarted from fallback SystemClockDriver");
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}
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void NotifyInputData(const AudioDataValue* aBuffer, size_t aFrames,
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TrackRate aRate, uint32_t aChannels) override {
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MOZ_CRASH("Unexpected NotifyInputData from fallback SystemClockDriver");
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}
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void DeviceChanged() override {
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MOZ_CRASH("Unexpected DeviceChanged from fallback SystemClockDriver");
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}
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#ifdef DEBUG
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bool InDriverIteration(GraphDriver* aDriver) override {
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return !mOwner->ThreadRunning() && mOwner->InIteration();
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}
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#endif
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IterationResult OneIteration(GraphTime aStateComputedEnd,
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GraphTime aIterationEnd,
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AudioMixer* aMixer) override {
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MOZ_ASSERT(!aMixer);
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#ifdef DEBUG
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AutoInCallback aic(mOwner);
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#endif
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mIterationStart = mIterationEnd;
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mIterationEnd = aIterationEnd;
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mStateComputedTime = aStateComputedEnd;
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IterationResult result =
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mGraph->OneIteration(aStateComputedEnd, aIterationEnd, aMixer);
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AudioStreamState audioState = mOwner->mAudioStreamState;
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MOZ_ASSERT(audioState != AudioStreamState::Stopping,
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"The audio driver can only enter stopping if it iterated the "
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"graph, which it can only do if there's no fallback driver");
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if (audioState != AudioStreamState::Running && result.IsStillProcessing()) {
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mOwner->MaybeStartAudioStream();
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return result;
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}
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MOZ_ASSERT(result.IsStillProcessing() || result.IsStop() ||
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result.IsSwitchDriver());
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// Proxy the release of the fallback driver to a background thread, so it
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// doesn't perform unexpected suicide.
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IterationResult stopFallback =
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IterationResult::CreateStop(NS_NewRunnableFunction(
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"AudioCallbackDriver::FallbackDriverStopped",
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[self = RefPtr<FallbackWrapper>(this), this,
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result = std::move(result)]() mutable {
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FallbackDriverState fallbackState =
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result.IsStillProcessing() ? FallbackDriverState::None
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: FallbackDriverState::Stopped;
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mOwner->FallbackDriverStopped(mIterationStart, mIterationEnd,
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mStateComputedTime, fallbackState);
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if (fallbackState == FallbackDriverState::Stopped) {
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#ifdef DEBUG
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// The AudioCallbackDriver may not iterate the graph, but we'll
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// call into it so we need to be regarded as "in iteration".
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AutoInCallback aic(mOwner);
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#endif
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if (GraphDriver* nextDriver = result.NextDriver()) {
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LOG(LogLevel::Debug,
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("%p: Switching from fallback to other driver.",
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mGraph.get()));
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result.Switched();
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nextDriver->SetState(mIterationStart, mIterationEnd,
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mStateComputedTime);
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nextDriver->Start();
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} else if (result.IsStop()) {
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LOG(LogLevel::Debug,
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("%p: Stopping fallback driver.", mGraph.get()));
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result.Stopped();
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}
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}
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mOwner = nullptr;
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NS_DispatchBackgroundTask(NS_NewRunnableFunction(
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"AudioCallbackDriver::FallbackDriverStopped::Release",
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[fallback = std::move(self->mFallbackDriver)] {}));
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}));
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return stopFallback;
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}
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private:
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virtual ~FallbackWrapper() = default;
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const RefPtr<GraphInterface> mGraph;
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// Valid until mFallbackDriver has finished its last iteration.
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RefPtr<AudioCallbackDriver> mOwner;
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RefPtr<SystemClockDriver> mFallbackDriver;
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GraphTime mIterationStart;
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GraphTime mIterationEnd;
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GraphTime mStateComputedTime;
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};
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NS_IMPL_ISUPPORTS0(AudioCallbackDriver::FallbackWrapper)
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AudioCallbackDriver::AudioCallbackDriver(
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GraphInterface* aGraphInterface, GraphDriver* aPreviousDriver,
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uint32_t aSampleRate, uint32_t aOutputChannelCount,
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uint32_t aInputChannelCount, CubebUtils::AudioDeviceID aOutputDeviceID,
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CubebUtils::AudioDeviceID aInputDeviceID, AudioInputType aAudioInputType)
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: GraphDriver(aGraphInterface, aPreviousDriver, aSampleRate),
|
|
mOutputChannels(aOutputChannelCount),
|
|
mInputChannelCount(aInputChannelCount),
|
|
mOutputDeviceID(aOutputDeviceID),
|
|
mInputDeviceID(aInputDeviceID),
|
|
mIterationDurationMS(MEDIA_GRAPH_TARGET_PERIOD_MS),
|
|
mStarted(false),
|
|
mInitShutdownThread(
|
|
SharedThreadPool::Get(NS_LITERAL_CSTRING("CubebOperation"), 1)),
|
|
mPromisesForOperation("AudioCallbackDriver::mPromisesForOperation"),
|
|
mAudioThreadId(std::thread::id()),
|
|
mAudioStreamState(AudioStreamState::None),
|
|
mFallback("AudioCallbackDriver::mFallback") {
|
|
LOG(LogLevel::Debug, ("%p: AudioCallbackDriver ctor", Graph()));
|
|
|
|
NS_WARNING_ASSERTION(mOutputChannels != 0, "Invalid output channel count");
|
|
MOZ_ASSERT(mOutputChannels <= 8);
|
|
|
|
const uint32_t kIdleThreadTimeoutMs = 2000;
|
|
mInitShutdownThread->SetIdleThreadTimeout(
|
|
PR_MillisecondsToInterval(kIdleThreadTimeoutMs));
|
|
|
|
#if defined(XP_WIN)
|
|
if (XRE_IsContentProcess()) {
|
|
audio::AudioNotificationReceiver::Register(this);
|
|
}
|
|
#endif
|
|
if (aAudioInputType == AudioInputType::Voice) {
|
|
LOG(LogLevel::Debug, ("VOICE."));
|
|
mInputDevicePreference = CUBEB_DEVICE_PREF_VOICE;
|
|
CubebUtils::SetInCommunication(true);
|
|
} else {
|
|
mInputDevicePreference = CUBEB_DEVICE_PREF_ALL;
|
|
}
|
|
|
|
mMixer.AddCallback(WrapNotNull(this));
|
|
}
|
|
|
|
AudioCallbackDriver::~AudioCallbackDriver() {
|
|
#ifdef DEBUG
|
|
{
|
|
auto promises = mPromisesForOperation.Lock();
|
|
MOZ_ASSERT(promises->IsEmpty());
|
|
}
|
|
#endif
|
|
#if defined(XP_WIN)
|
|
if (XRE_IsContentProcess()) {
|
|
audio::AudioNotificationReceiver::Unregister(this);
|
|
}
|
|
#endif
|
|
if (mInputDevicePreference == CUBEB_DEVICE_PREF_VOICE) {
|
|
CubebUtils::SetInCommunication(false);
|
|
}
|
|
}
|
|
|
|
bool IsMacbookOrMacbookAir() {
|
|
#ifdef XP_MACOSX
|
|
size_t len = 0;
|
|
sysctlbyname("hw.model", NULL, &len, NULL, 0);
|
|
if (len) {
|
|
UniquePtr<char[]> model(new char[len]);
|
|
// This string can be
|
|
// MacBook%d,%d for a normal MacBook
|
|
// MacBookPro%d,%d for a MacBook Pro
|
|
// MacBookAir%d,%d for a Macbook Air
|
|
sysctlbyname("hw.model", model.get(), &len, NULL, 0);
|
|
char* substring = strstr(model.get(), "MacBook");
|
|
if (substring) {
|
|
const size_t offset = strlen("MacBook");
|
|
if (!strncmp(model.get() + offset, "Air", 3) ||
|
|
isdigit(model[offset + 1])) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
void AudioCallbackDriver::Init() {
|
|
MOZ_ASSERT(OnCubebOperationThread());
|
|
MOZ_ASSERT(mAudioStreamState == AudioStreamState::Pending);
|
|
FallbackDriverState fallbackState = mFallbackDriverState;
|
|
if (fallbackState == FallbackDriverState::Stopped) {
|
|
// The graph has already stopped us.
|
|
return;
|
|
}
|
|
bool fromFallback = fallbackState == FallbackDriverState::Running;
|
|
cubeb* cubebContext = CubebUtils::GetCubebContext();
|
|
if (!cubebContext) {
|
|
NS_WARNING("Could not get cubeb context.");
|
|
LOG(LogLevel::Warning, ("%s: Could not get cubeb context", __func__));
|
|
mAudioStreamState = AudioStreamState::None;
|
|
if (!fromFallback) {
|
|
CubebUtils::ReportCubebStreamInitFailure(true);
|
|
FallbackToSystemClockDriver();
|
|
}
|
|
return;
|
|
}
|
|
|
|
cubeb_stream_params output;
|
|
cubeb_stream_params input;
|
|
bool firstStream = CubebUtils::GetFirstStream();
|
|
|
|
MOZ_ASSERT(!NS_IsMainThread(),
|
|
"This is blocking and should never run on the main thread.");
|
|
|
|
output.rate = mSampleRate;
|
|
|
|
if (AUDIO_OUTPUT_FORMAT == AUDIO_FORMAT_S16) {
|
|
output.format = CUBEB_SAMPLE_S16NE;
|
|
} else {
|
|
output.format = CUBEB_SAMPLE_FLOAT32NE;
|
|
}
|
|
|
|
if (!mOutputChannels) {
|
|
LOG(LogLevel::Warning, ("Output number of channels is 0."));
|
|
mAudioStreamState = AudioStreamState::None;
|
|
if (!fromFallback) {
|
|
CubebUtils::ReportCubebStreamInitFailure(firstStream);
|
|
FallbackToSystemClockDriver();
|
|
}
|
|
return;
|
|
}
|
|
|
|
CubebUtils::AudioDeviceID forcedOutputDeviceId = nullptr;
|
|
|
|
char* forcedOutputDeviceName = CubebUtils::GetForcedOutputDevice();
|
|
if (forcedOutputDeviceName) {
|
|
RefPtr<CubebDeviceEnumerator> enumerator = Enumerator::GetInstance();
|
|
RefPtr<AudioDeviceInfo> device = enumerator->DeviceInfoFromName(
|
|
NS_ConvertUTF8toUTF16(forcedOutputDeviceName), EnumeratorSide::OUTPUT);
|
|
if (device && device->DeviceID()) {
|
|
forcedOutputDeviceId = device->DeviceID();
|
|
}
|
|
}
|
|
|
|
mBuffer = AudioCallbackBufferWrapper<AudioDataValue>(mOutputChannels);
|
|
mScratchBuffer =
|
|
SpillBuffer<AudioDataValue, WEBAUDIO_BLOCK_SIZE * 2>(mOutputChannels);
|
|
|
|
output.channels = mOutputChannels;
|
|
AudioConfig::ChannelLayout::ChannelMap channelMap =
|
|
AudioConfig::ChannelLayout(mOutputChannels).Map();
|
|
|
|
output.layout = static_cast<uint32_t>(channelMap);
|
|
output.prefs = CubebUtils::GetDefaultStreamPrefs();
|
|
#if !defined(XP_WIN)
|
|
if (mInputDevicePreference == CUBEB_DEVICE_PREF_VOICE) {
|
|
output.prefs |= static_cast<cubeb_stream_prefs>(CUBEB_STREAM_PREF_VOICE);
|
|
}
|
|
#endif
|
|
|
|
uint32_t latencyFrames = CubebUtils::GetCubebMTGLatencyInFrames(&output);
|
|
|
|
// Macbook and MacBook air don't have enough CPU to run very low latency
|
|
// MediaTrackGraphs, cap the minimal latency to 512 frames int this case.
|
|
if (IsMacbookOrMacbookAir()) {
|
|
latencyFrames = std::max((uint32_t)512, latencyFrames);
|
|
}
|
|
|
|
// On OSX, having a latency that is lower than 10ms is very common. It's
|
|
// not very useful when doing voice, because all the WebRTC code deal in 10ms
|
|
// chunks of audio. Take the first power of two above 10ms at the current
|
|
// rate in this case. It's probably 512, for common rates.
|
|
#if defined(XP_MACOSX)
|
|
if (mInputDevicePreference == CUBEB_DEVICE_PREF_VOICE) {
|
|
if (latencyFrames < mSampleRate / 100) {
|
|
latencyFrames = mozilla::RoundUpPow2(mSampleRate / 100);
|
|
}
|
|
}
|
|
#endif
|
|
LOG(LogLevel::Debug, ("Effective latency in frames: %d", latencyFrames));
|
|
|
|
input = output;
|
|
input.channels = mInputChannelCount;
|
|
input.layout = CUBEB_LAYOUT_UNDEFINED;
|
|
|
|
cubeb_stream* stream = nullptr;
|
|
bool inputWanted = mInputChannelCount > 0;
|
|
CubebUtils::AudioDeviceID outputId = mOutputDeviceID;
|
|
CubebUtils::AudioDeviceID inputId = mInputDeviceID;
|
|
|
|
// XXX Only pass input input if we have an input listener. Always
|
|
// set up output because it's easier, and it will just get silence.
|
|
if (cubeb_stream_init(cubebContext, &stream, "AudioCallbackDriver", inputId,
|
|
inputWanted ? &input : nullptr,
|
|
forcedOutputDeviceId ? forcedOutputDeviceId : outputId,
|
|
&output, latencyFrames, DataCallback_s, StateCallback_s,
|
|
this) == CUBEB_OK) {
|
|
mAudioStream.own(stream);
|
|
DebugOnly<int> rv =
|
|
cubeb_stream_set_volume(mAudioStream, CubebUtils::GetVolumeScale());
|
|
NS_WARNING_ASSERTION(
|
|
rv == CUBEB_OK,
|
|
"Could not set the audio stream volume in GraphDriver.cpp");
|
|
CubebUtils::ReportCubebBackendUsed();
|
|
} else {
|
|
NS_WARNING(
|
|
"Could not create a cubeb stream for MediaTrackGraph, falling "
|
|
"back to a SystemClockDriver");
|
|
mAudioStreamState = AudioStreamState::None;
|
|
// Only report failures when we're not coming from a driver that was
|
|
// created itself as a fallback driver because of a previous audio driver
|
|
// failure.
|
|
if (!fromFallback) {
|
|
CubebUtils::ReportCubebStreamInitFailure(firstStream);
|
|
FallbackToSystemClockDriver();
|
|
}
|
|
return;
|
|
}
|
|
|
|
#ifdef XP_MACOSX
|
|
PanOutputIfNeeded(inputWanted);
|
|
#endif
|
|
|
|
cubeb_stream_register_device_changed_callback(
|
|
mAudioStream, AudioCallbackDriver::DeviceChangedCallback_s);
|
|
|
|
if (NS_WARN_IF(!StartStream())) {
|
|
LOG(LogLevel::Warning,
|
|
("%p: AudioCallbackDriver couldn't start a cubeb stream.", Graph()));
|
|
return;
|
|
}
|
|
|
|
LOG(LogLevel::Debug, ("%p: AudioCallbackDriver started.", Graph()));
|
|
}
|
|
|
|
void AudioCallbackDriver::Start() {
|
|
MOZ_ASSERT(!IsStarted());
|
|
MOZ_ASSERT(mAudioStreamState == AudioStreamState::None);
|
|
MOZ_ASSERT_IF(PreviousDriver(), PreviousDriver()->InIteration());
|
|
mAudioStreamState = AudioStreamState::Pending;
|
|
mRanFirstIteration = false;
|
|
|
|
if (mFallbackDriverState == FallbackDriverState::None) {
|
|
// Starting an audio driver could take a while. We start a system driver in
|
|
// the meantime so that the graph is kept running.
|
|
FallbackToSystemClockDriver();
|
|
}
|
|
|
|
if (mPreviousDriver) {
|
|
if (mPreviousDriver->AsAudioCallbackDriver()) {
|
|
LOG(LogLevel::Debug, ("Releasing audio driver off main thread."));
|
|
RefPtr<AsyncCubebTask> releaseEvent =
|
|
new AsyncCubebTask(mPreviousDriver->AsAudioCallbackDriver(),
|
|
AsyncCubebOperation::SHUTDOWN);
|
|
releaseEvent->Dispatch();
|
|
} else {
|
|
LOG(LogLevel::Debug,
|
|
("Dropping driver reference for SystemClockDriver."));
|
|
MOZ_ASSERT(mPreviousDriver->AsSystemClockDriver());
|
|
}
|
|
mPreviousDriver = nullptr;
|
|
}
|
|
|
|
LOG(LogLevel::Debug, ("Starting new audio driver off main thread, "
|
|
"to ensure it runs after previous shutdown."));
|
|
RefPtr<AsyncCubebTask> initEvent =
|
|
new AsyncCubebTask(AsAudioCallbackDriver(), AsyncCubebOperation::INIT);
|
|
initEvent->Dispatch();
|
|
}
|
|
|
|
bool AudioCallbackDriver::StartStream() {
|
|
MOZ_ASSERT(!IsStarted() && OnCubebOperationThread());
|
|
// Set mStarted before cubeb_stream_start, since starting the cubeb stream can
|
|
// result in a callback (that may read mStarted) before mStarted would
|
|
// otherwise be set to true.
|
|
mStarted = true;
|
|
if (cubeb_stream_start(mAudioStream) != CUBEB_OK) {
|
|
NS_WARNING("Could not start cubeb stream for MTG.");
|
|
mStarted = false;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void AudioCallbackDriver::Stop() {
|
|
MOZ_ASSERT(OnCubebOperationThread());
|
|
if (cubeb_stream_stop(mAudioStream) != CUBEB_OK) {
|
|
NS_WARNING("Could not stop cubeb stream for MTG.");
|
|
}
|
|
mStarted = false;
|
|
}
|
|
|
|
void AudioCallbackDriver::Shutdown() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
RefPtr<FallbackWrapper> fallback;
|
|
{
|
|
auto fallbackLock = mFallback.Lock();
|
|
fallback = fallbackLock.ref();
|
|
fallbackLock.ref() = nullptr;
|
|
}
|
|
if (fallback) {
|
|
LOG(LogLevel::Debug,
|
|
("%p: Releasing fallback driver %p.", Graph(), fallback.get()));
|
|
fallback->Shutdown();
|
|
}
|
|
|
|
LOG(LogLevel::Debug,
|
|
("%p: Releasing audio driver off main thread (GraphDriver::Shutdown).",
|
|
Graph()));
|
|
RefPtr<AsyncCubebTask> releaseEvent =
|
|
new AsyncCubebTask(this, AsyncCubebOperation::SHUTDOWN);
|
|
releaseEvent->Dispatch(NS_DISPATCH_SYNC);
|
|
}
|
|
|
|
#if defined(XP_WIN)
|
|
void AudioCallbackDriver::ResetDefaultDevice() {
|
|
if (cubeb_stream_reset_default_device(mAudioStream) != CUBEB_OK) {
|
|
NS_WARNING("Could not reset cubeb stream to default output device.");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* static */
|
|
long AudioCallbackDriver::DataCallback_s(cubeb_stream* aStream, void* aUser,
|
|
const void* aInputBuffer,
|
|
void* aOutputBuffer, long aFrames) {
|
|
AudioCallbackDriver* driver = reinterpret_cast<AudioCallbackDriver*>(aUser);
|
|
return driver->DataCallback(static_cast<const AudioDataValue*>(aInputBuffer),
|
|
static_cast<AudioDataValue*>(aOutputBuffer),
|
|
aFrames);
|
|
}
|
|
|
|
/* static */
|
|
void AudioCallbackDriver::StateCallback_s(cubeb_stream* aStream, void* aUser,
|
|
cubeb_state aState) {
|
|
AudioCallbackDriver* driver = reinterpret_cast<AudioCallbackDriver*>(aUser);
|
|
driver->StateCallback(aState);
|
|
}
|
|
|
|
/* static */
|
|
void AudioCallbackDriver::DeviceChangedCallback_s(void* aUser) {
|
|
AudioCallbackDriver* driver = reinterpret_cast<AudioCallbackDriver*>(aUser);
|
|
driver->DeviceChangedCallback();
|
|
}
|
|
|
|
AudioCallbackDriver::AutoInCallback::AutoInCallback(
|
|
AudioCallbackDriver* aDriver)
|
|
: mDriver(aDriver) {
|
|
MOZ_ASSERT(mDriver->mAudioThreadId == std::thread::id());
|
|
mDriver->mAudioThreadId = std::this_thread::get_id();
|
|
}
|
|
|
|
AudioCallbackDriver::AutoInCallback::~AutoInCallback() {
|
|
MOZ_ASSERT(mDriver->mAudioThreadId == std::this_thread::get_id());
|
|
mDriver->mAudioThreadId = std::thread::id();
|
|
}
|
|
|
|
long AudioCallbackDriver::DataCallback(const AudioDataValue* aInputBuffer,
|
|
AudioDataValue* aOutputBuffer,
|
|
long aFrames) {
|
|
FallbackDriverState fallbackState = mFallbackDriverState;
|
|
if (MOZ_UNLIKELY(fallbackState == FallbackDriverState::Running)) {
|
|
// Wait for the fallback driver to stop. Wake it up so it can stop if it's
|
|
// sleeping.
|
|
EnsureNextIteration();
|
|
PodZero(aOutputBuffer, aFrames * mOutputChannels);
|
|
return aFrames;
|
|
}
|
|
|
|
if (MOZ_UNLIKELY(fallbackState == FallbackDriverState::Stopped)) {
|
|
// We're supposed to stop.
|
|
PodZero(aOutputBuffer, aFrames * mOutputChannels);
|
|
return aFrames - 1;
|
|
}
|
|
|
|
MOZ_ASSERT(ThreadRunning());
|
|
TRACE_AUDIO_CALLBACK_BUDGET(aFrames, mSampleRate);
|
|
TRACE_AUDIO_CALLBACK();
|
|
|
|
#ifdef DEBUG
|
|
AutoInCallback aic(this);
|
|
#endif
|
|
|
|
if (!mRanFirstIteration) {
|
|
Graph()->NotifyStarted();
|
|
mRanFirstIteration = true;
|
|
}
|
|
|
|
uint32_t durationMS = aFrames * 1000 / mSampleRate;
|
|
|
|
// For now, simply average the duration with the previous
|
|
// duration so there is some damping against sudden changes.
|
|
if (!mIterationDurationMS) {
|
|
mIterationDurationMS = durationMS;
|
|
} else {
|
|
mIterationDurationMS = (mIterationDurationMS * 3) + durationMS;
|
|
mIterationDurationMS /= 4;
|
|
}
|
|
|
|
mBuffer.SetBuffer(aOutputBuffer, aFrames);
|
|
// fill part or all with leftover data from last iteration (since we
|
|
// align to Audio blocks)
|
|
mScratchBuffer.Empty(mBuffer);
|
|
|
|
// State computed time is decided by the audio callback's buffer length. We
|
|
// compute the iteration start and end from there, trying to keep the amount
|
|
// of buffering in the graph constant.
|
|
GraphTime nextStateComputedTime =
|
|
MediaTrackGraphImpl::RoundUpToEndOfAudioBlock(mStateComputedTime +
|
|
mBuffer.Available());
|
|
|
|
mIterationStart = mIterationEnd;
|
|
// inGraph is the number of audio frames there is between the state time and
|
|
// the current time, i.e. the maximum theoretical length of the interval we
|
|
// could use as [mIterationStart; mIterationEnd].
|
|
GraphTime inGraph = mStateComputedTime - mIterationStart;
|
|
// We want the interval [mIterationStart; mIterationEnd] to be before the
|
|
// interval [mStateComputedTime; nextStateComputedTime]. We also want
|
|
// the distance between these intervals to be roughly equivalent each time, to
|
|
// ensure there is no clock drift between current time and state time. Since
|
|
// we can't act on the state time because we have to fill the audio buffer, we
|
|
// reclock the current time against the state time, here.
|
|
mIterationEnd = mIterationStart + 0.8 * inGraph;
|
|
|
|
LOG(LogLevel::Verbose,
|
|
("%p: interval[%ld; %ld] state[%ld; %ld] (frames: %ld) (durationMS: %u) "
|
|
"(duration ticks: %ld)",
|
|
Graph(), (long)mIterationStart, (long)mIterationEnd,
|
|
(long)mStateComputedTime, (long)nextStateComputedTime, (long)aFrames,
|
|
(uint32_t)durationMS,
|
|
(long)(nextStateComputedTime - mStateComputedTime)));
|
|
|
|
if (mStateComputedTime < mIterationEnd) {
|
|
LOG(LogLevel::Error, ("%p: Media graph global underrun detected", Graph()));
|
|
MOZ_ASSERT_UNREACHABLE("We should not underrun in full duplex");
|
|
mIterationEnd = mStateComputedTime;
|
|
}
|
|
|
|
// Process mic data if any/needed
|
|
if (aInputBuffer && mInputChannelCount > 0) {
|
|
Graph()->NotifyInputData(aInputBuffer, static_cast<size_t>(aFrames),
|
|
mSampleRate, mInputChannelCount);
|
|
}
|
|
|
|
bool iterate = mBuffer.Available();
|
|
IterationResult result =
|
|
iterate
|
|
? Graph()->OneIteration(nextStateComputedTime, mIterationEnd, &mMixer)
|
|
: IterationResult::CreateStillProcessing();
|
|
if (iterate) {
|
|
// We totally filled the buffer (and mScratchBuffer isn't empty).
|
|
// We don't need to run an iteration and if we do so we may overflow.
|
|
mStateComputedTime = nextStateComputedTime;
|
|
} else {
|
|
LOG(LogLevel::Verbose,
|
|
("%p: DataCallback buffer filled entirely from scratch "
|
|
"buffer, skipping iteration.",
|
|
Graph()));
|
|
result = IterationResult::CreateStillProcessing();
|
|
}
|
|
|
|
mBuffer.BufferFilled();
|
|
|
|
// Callback any observers for the AEC speaker data. Note that one
|
|
// (maybe) of these will be full-duplex, the others will get their input
|
|
// data off separate cubeb callbacks. Take care with how stuff is
|
|
// removed/added to this list and TSAN issues, but input and output will
|
|
// use separate callback methods.
|
|
Graph()->NotifyOutputData(aOutputBuffer, static_cast<size_t>(aFrames),
|
|
mSampleRate, mOutputChannels);
|
|
|
|
#ifdef XP_MACOSX
|
|
// This only happens when the output is on a macbookpro's external speaker,
|
|
// that are stereo, but let's just be safe.
|
|
if (mNeedsPanning && mOutputChannels == 2) {
|
|
// hard pan to the right
|
|
for (uint32_t i = 0; i < aFrames * 2; i += 2) {
|
|
aOutputBuffer[i + 1] += aOutputBuffer[i];
|
|
aOutputBuffer[i] = 0.0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (result.IsStop()) {
|
|
// Signal that we have stopped.
|
|
result.Stopped();
|
|
// Update the flag before handing over the graph and going to drain.
|
|
mAudioStreamState = AudioStreamState::Stopping;
|
|
return aFrames - 1;
|
|
}
|
|
|
|
if (GraphDriver* nextDriver = result.NextDriver()) {
|
|
LOG(LogLevel::Debug,
|
|
("%p: Switching to %s driver.", Graph(),
|
|
nextDriver->AsAudioCallbackDriver() ? "audio" : "system"));
|
|
result.Switched();
|
|
mAudioStreamState = AudioStreamState::Stopping;
|
|
nextDriver->SetState(mIterationStart, mIterationEnd, mStateComputedTime);
|
|
nextDriver->Start();
|
|
// Returning less than aFrames starts the draining and eventually stops the
|
|
// audio thread. This function will never get called again.
|
|
return aFrames - 1;
|
|
}
|
|
|
|
MOZ_ASSERT(result.IsStillProcessing());
|
|
return aFrames;
|
|
}
|
|
|
|
static const char* StateToString(cubeb_state aState) {
|
|
switch (aState) {
|
|
case CUBEB_STATE_STARTED:
|
|
return "STARTED";
|
|
case CUBEB_STATE_STOPPED:
|
|
return "STOPPED";
|
|
case CUBEB_STATE_DRAINED:
|
|
return "DRAINED";
|
|
case CUBEB_STATE_ERROR:
|
|
return "ERROR";
|
|
default:
|
|
MOZ_CRASH("Unexpected state!");
|
|
}
|
|
}
|
|
|
|
void AudioCallbackDriver::StateCallback(cubeb_state aState) {
|
|
MOZ_ASSERT(!InIteration());
|
|
LOG(LogLevel::Debug,
|
|
("AudioCallbackDriver State: %s", StateToString(aState)));
|
|
|
|
// Clear the flag for the not running
|
|
// states: stopped, drained, error.
|
|
AudioStreamState streamState = mAudioStreamState.exchange(
|
|
aState == CUBEB_STATE_STARTED ? AudioStreamState::Running
|
|
: AudioStreamState::None);
|
|
|
|
if (aState == CUBEB_STATE_ERROR) {
|
|
// About to hand over control of the graph. Do not start a new driver if
|
|
// StateCallback() receives an error for this stream while the main thread
|
|
// or another driver has control of the graph.
|
|
if (streamState == AudioStreamState::Running) {
|
|
MOZ_ASSERT(!ThreadRunning());
|
|
FallbackToSystemClockDriver();
|
|
}
|
|
} else if (aState == CUBEB_STATE_STOPPED) {
|
|
MOZ_ASSERT(!ThreadRunning());
|
|
}
|
|
}
|
|
|
|
void AudioCallbackDriver::MixerCallback(AudioDataValue* aMixedBuffer,
|
|
AudioSampleFormat aFormat,
|
|
uint32_t aChannels, uint32_t aFrames,
|
|
uint32_t aSampleRate) {
|
|
MOZ_ASSERT(InIteration());
|
|
uint32_t toWrite = mBuffer.Available();
|
|
|
|
if (!mBuffer.Available()) {
|
|
NS_WARNING("DataCallback buffer full, expect frame drops.");
|
|
}
|
|
|
|
MOZ_ASSERT(mBuffer.Available() <= aFrames);
|
|
|
|
mBuffer.WriteFrames(aMixedBuffer, mBuffer.Available());
|
|
MOZ_ASSERT(mBuffer.Available() == 0,
|
|
"Missing frames to fill audio callback's buffer.");
|
|
|
|
DebugOnly<uint32_t> written = mScratchBuffer.Fill(
|
|
aMixedBuffer + toWrite * aChannels, aFrames - toWrite);
|
|
NS_WARNING_ASSERTION(written == aFrames - toWrite, "Dropping frames.");
|
|
};
|
|
|
|
void AudioCallbackDriver::PanOutputIfNeeded(bool aMicrophoneActive) {
|
|
#ifdef XP_MACOSX
|
|
cubeb_device* out = nullptr;
|
|
int rv;
|
|
char name[128];
|
|
size_t length = sizeof(name);
|
|
|
|
rv = sysctlbyname("hw.model", name, &length, NULL, 0);
|
|
if (rv) {
|
|
return;
|
|
}
|
|
|
|
if (!strncmp(name, "MacBookPro", 10)) {
|
|
if (cubeb_stream_get_current_device(mAudioStream, &out) == CUBEB_OK) {
|
|
MOZ_ASSERT(out);
|
|
// Check if we are currently outputing sound on external speakers.
|
|
if (out->output_name && !strcmp(out->output_name, "ispk")) {
|
|
// Pan everything to the right speaker.
|
|
LOG(LogLevel::Debug, ("Using the built-in speakers, with%s audio input",
|
|
aMicrophoneActive ? "" : "out"));
|
|
mNeedsPanning = aMicrophoneActive;
|
|
} else {
|
|
LOG(LogLevel::Debug, ("Using an external output device"));
|
|
mNeedsPanning = false;
|
|
}
|
|
cubeb_stream_device_destroy(mAudioStream, out);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void AudioCallbackDriver::DeviceChangedCallback() {
|
|
MOZ_ASSERT(!InIteration());
|
|
// Tell the audio engine the device has changed, it might want to reset some
|
|
// state.
|
|
Graph()->DeviceChanged();
|
|
#ifdef XP_MACOSX
|
|
RefPtr<AudioCallbackDriver> self(this);
|
|
bool hasInput = mInputChannelCount;
|
|
NS_DispatchBackgroundTask(NS_NewRunnableFunction(
|
|
"PanOutputIfNeeded", [self{std::move(self)}, hasInput]() {
|
|
self->PanOutputIfNeeded(hasInput);
|
|
}));
|
|
#endif
|
|
}
|
|
|
|
uint32_t AudioCallbackDriver::IterationDuration() {
|
|
MOZ_ASSERT(InIteration());
|
|
// The real fix would be to have an API in cubeb to give us the number. Short
|
|
// of that, we approximate it here. bug 1019507
|
|
return mIterationDurationMS;
|
|
}
|
|
|
|
void AudioCallbackDriver::EnsureNextIteration() {
|
|
if (mFallbackDriverState == FallbackDriverState::Running) {
|
|
auto fallback = mFallback.Lock();
|
|
if (fallback.ref()) {
|
|
fallback.ref()->EnsureNextIteration();
|
|
}
|
|
}
|
|
}
|
|
|
|
bool AudioCallbackDriver::IsStarted() { return mStarted; }
|
|
|
|
void AudioCallbackDriver::EnqueueTrackAndPromiseForOperation(
|
|
MediaTrack* aTrack, dom::AudioContextOperation aOperation,
|
|
AbstractThread* aMainThread,
|
|
MozPromiseHolder<MediaTrackGraph::AudioContextOperationPromise>&& aHolder) {
|
|
MOZ_ASSERT(InIteration() || !ThreadRunning());
|
|
auto promises = mPromisesForOperation.Lock();
|
|
promises->AppendElement(TrackAndPromiseForOperation(
|
|
aTrack, aOperation, aMainThread, std::move(aHolder)));
|
|
}
|
|
|
|
void AudioCallbackDriver::CompleteAudioContextOperations(
|
|
AsyncCubebOperation aOperation) {
|
|
MOZ_ASSERT(OnCubebOperationThread());
|
|
auto promises = mPromisesForOperation.Lock();
|
|
for (uint32_t i = 0; i < promises->Length(); i++) {
|
|
TrackAndPromiseForOperation& s = promises.ref()[i];
|
|
if ((aOperation == AsyncCubebOperation::INIT &&
|
|
s.mOperation == dom::AudioContextOperation::Resume) ||
|
|
(aOperation == AsyncCubebOperation::SHUTDOWN &&
|
|
s.mOperation != dom::AudioContextOperation::Resume)) {
|
|
AudioContextState state;
|
|
switch (s.mOperation) {
|
|
case dom::AudioContextOperation::Resume:
|
|
state = dom::AudioContextState::Running;
|
|
break;
|
|
case dom::AudioContextOperation::Suspend:
|
|
state = dom::AudioContextState::Suspended;
|
|
break;
|
|
case dom::AudioContextOperation::Close:
|
|
state = dom::AudioContextState::Closed;
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Unexpected operation");
|
|
}
|
|
s.mMainThread->Dispatch(NS_NewRunnableFunction(
|
|
"AudioContextOperation::Resolve",
|
|
[holder = std::move(s.mHolder), state]() mutable {
|
|
holder.Resolve(state, __func__);
|
|
}));
|
|
promises->RemoveElementAt(i);
|
|
i--;
|
|
}
|
|
}
|
|
}
|
|
|
|
TimeDuration AudioCallbackDriver::AudioOutputLatency() {
|
|
uint32_t latencyFrames;
|
|
int rv = cubeb_stream_get_latency(mAudioStream, &latencyFrames);
|
|
if (rv || mSampleRate == 0) {
|
|
return TimeDuration::FromSeconds(0.0);
|
|
}
|
|
|
|
return TimeDuration::FromSeconds(static_cast<double>(latencyFrames) /
|
|
mSampleRate);
|
|
}
|
|
|
|
void AudioCallbackDriver::FallbackToSystemClockDriver() {
|
|
MOZ_ASSERT(!ThreadRunning());
|
|
MOZ_ASSERT(mAudioStreamState == AudioStreamState::None ||
|
|
mAudioStreamState == AudioStreamState::Pending);
|
|
MOZ_ASSERT(mFallbackDriverState == FallbackDriverState::None);
|
|
LOG(LogLevel::Debug,
|
|
("%p: AudioCallbackDriver %p Falling back to SystemClockDriver.", Graph(),
|
|
this));
|
|
mFallbackDriverState = FallbackDriverState::Running;
|
|
mNextReInitBackoffStep =
|
|
TimeDuration::FromMilliseconds(AUDIO_INITIAL_FALLBACK_BACKOFF_STEP_MS);
|
|
mNextReInitAttempt = TimeStamp::Now() + mNextReInitBackoffStep;
|
|
auto fallback =
|
|
MakeRefPtr<FallbackWrapper>(Graph(), this, mSampleRate, mIterationStart,
|
|
mIterationEnd, mStateComputedTime);
|
|
{
|
|
auto driver = mFallback.Lock();
|
|
driver.ref() = fallback;
|
|
}
|
|
fallback->Start();
|
|
}
|
|
|
|
void AudioCallbackDriver::FallbackDriverStopped(GraphTime aIterationStart,
|
|
GraphTime aIterationEnd,
|
|
GraphTime aStateComputedTime,
|
|
FallbackDriverState aState) {
|
|
mIterationStart = aIterationStart;
|
|
mIterationEnd = aIterationEnd;
|
|
mStateComputedTime = aStateComputedTime;
|
|
mNextReInitAttempt = TimeStamp();
|
|
mNextReInitBackoffStep = TimeDuration();
|
|
{
|
|
auto fallback = mFallback.Lock();
|
|
MOZ_ASSERT(fallback.ref()->OnThread());
|
|
fallback.ref() = nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(aState == FallbackDriverState::None ||
|
|
aState == FallbackDriverState::Stopped);
|
|
MOZ_ASSERT_IF(aState == FallbackDriverState::None,
|
|
mAudioStreamState == AudioStreamState::Running);
|
|
mFallbackDriverState = aState;
|
|
}
|
|
|
|
void AudioCallbackDriver::MaybeStartAudioStream() {
|
|
AudioStreamState streamState = mAudioStreamState;
|
|
if (streamState != AudioStreamState::None) {
|
|
LOG(LogLevel::Verbose,
|
|
("%p: AudioCallbackDriver %p Cannot re-init.", Graph(), this));
|
|
return;
|
|
}
|
|
|
|
TimeStamp now = TimeStamp::Now();
|
|
if (now < mNextReInitAttempt) {
|
|
LOG(LogLevel::Verbose,
|
|
("%p: AudioCallbackDriver %p Not time to re-init yet. %.3fs left.",
|
|
Graph(), this, (mNextReInitAttempt - now).ToSeconds()));
|
|
return;
|
|
}
|
|
|
|
LOG(LogLevel::Debug, ("%p: AudioCallbackDriver %p Attempting to re-init "
|
|
"audio stream from fallback driver.",
|
|
Graph(), this));
|
|
mNextReInitBackoffStep = std::min(
|
|
mNextReInitBackoffStep * 2,
|
|
TimeDuration::FromMilliseconds(AUDIO_MAX_FALLBACK_BACKOFF_STEP_MS));
|
|
mNextReInitAttempt = now + mNextReInitBackoffStep;
|
|
Start();
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|
|
// avoid redefined macro in unified build
|
|
#undef LOG
|