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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "CubebUtils.h"
#include "GraphDriver.h"
#include "gmock/gmock.h"
#include "gtest/gtest-printers.h"
#include "gtest/gtest.h"
#include "MediaTrackGraphImpl.h"
#include "mozilla/Attributes.h"
#include "mozilla/UniquePtr.h"
#include "nsTArray.h"
#include "MockCubeb.h"
#include "WaitFor.h"
using namespace mozilla;
using IterationResult = GraphInterface::IterationResult;
using ::testing::NiceMock;
class MockGraphInterface : public GraphInterface {
NS_DECL_THREADSAFE_ISUPPORTS
explicit MockGraphInterface(TrackRate aSampleRate)
: mSampleRate(aSampleRate) {}
MOCK_METHOD4(NotifyOutputData,
void(AudioDataValue*, size_t, TrackRate, uint32_t));
MOCK_METHOD0(NotifyInputStopped, void());
MOCK_METHOD5(NotifyInputData, void(const AudioDataValue*, size_t, TrackRate,
uint32_t, uint32_t));
MOCK_METHOD0(DeviceChanged, void());
/* OneIteration cannot be mocked because IterationResult is non-memmovable and
* cannot be passed as a parameter, which GMock does internally. */
IterationResult OneIteration(GraphTime aStateComputedTime, GraphTime,
AudioMixer* aMixer) {
GraphDriver* driver = mCurrentDriver;
if (aMixer) {
aMixer->StartMixing();
aMixer->Mix(nullptr,
driver->AsAudioCallbackDriver()->OutputChannelCount(),
aStateComputedTime - mStateComputedTime, mSampleRate);
aMixer->FinishMixing();
}
if (aStateComputedTime != mStateComputedTime) {
mFramesIteratedEvent.Notify(aStateComputedTime - mStateComputedTime);
++mIterationCount;
}
mStateComputedTime = aStateComputedTime;
if (!mKeepProcessing) {
return IterationResult::CreateStop(
NS_NewRunnableFunction(__func__, [] {}));
}
GraphDriver* next = mNextDriver.exchange(nullptr);
if (next) {
return IterationResult::CreateSwitchDriver(
next, NS_NewRunnableFunction(__func__, [] {}));
}
if (mEnsureNextIteration) {
driver->EnsureNextIteration();
}
return IterationResult::CreateStillProcessing();
}
void SetEnsureNextIteration(bool aEnsure) { mEnsureNextIteration = aEnsure; }
#ifdef DEBUG
bool InDriverIteration(const GraphDriver* aDriver) const override {
return aDriver->OnThread();
}
#endif
size_t IterationCount() const { return mIterationCount; }
GraphTime StateComputedTime() const { return mStateComputedTime; }
void SetCurrentDriver(GraphDriver* aDriver) { mCurrentDriver = aDriver; }
void StopIterating() { mKeepProcessing = false; }
void SwitchTo(GraphDriver* aDriver) { mNextDriver = aDriver; }
const TrackRate mSampleRate;
MediaEventSource<uint32_t>& FramesIteratedEvent() {
return mFramesIteratedEvent;
}
protected:
Atomic<size_t> mIterationCount{0};
Atomic<GraphTime> mStateComputedTime{0};
Atomic<GraphDriver*> mCurrentDriver{nullptr};
Atomic<bool> mEnsureNextIteration{false};
Atomic<bool> mKeepProcessing{true};
Atomic<GraphDriver*> mNextDriver{nullptr};
MediaEventProducer<uint32_t> mFramesIteratedEvent;
virtual ~MockGraphInterface() = default;
};
NS_IMPL_ISUPPORTS0(MockGraphInterface)
TEST(TestAudioCallbackDriver, StartStop)
MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
const TrackRate rate = 44100;
MockCubeb* cubeb = new MockCubeb();
CubebUtils::ForceSetCubebContext(cubeb->AsCubebContext());
RefPtr<AudioCallbackDriver> driver;
auto graph = MakeRefPtr<NiceMock<MockGraphInterface>>(rate);
EXPECT_CALL(*graph, NotifyInputStopped).Times(0);
ON_CALL(*graph, NotifyOutputData)
.WillByDefault([&](AudioDataValue*, size_t, TrackRate, uint32_t) {});
driver = MakeRefPtr<AudioCallbackDriver>(graph, nullptr, rate, 2, 0, nullptr,
nullptr, AudioInputType::Unknown);
EXPECT_FALSE(driver->ThreadRunning()) << "Verify thread is not running";
EXPECT_FALSE(driver->IsStarted()) << "Verify thread is not started";
graph->SetCurrentDriver(driver);
driver->Start();
// Allow some time to "play" audio.
std::this_thread::sleep_for(std::chrono::milliseconds(200));
EXPECT_TRUE(driver->ThreadRunning()) << "Verify thread is running";
EXPECT_TRUE(driver->IsStarted()) << "Verify thread is started";
// This will block untill all events have been executed.
MOZ_KnownLive(driver)->Shutdown();
EXPECT_FALSE(driver->ThreadRunning()) << "Verify thread is not running";
EXPECT_FALSE(driver->IsStarted()) << "Verify thread is not started";
}
void TestSlowStart(const TrackRate aRate) MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
std::cerr << "TestSlowStart with rate " << aRate << std::endl;
MockCubeb* cubeb = new MockCubeb();
cubeb->SetStreamStartFreezeEnabled(true);
auto unforcer = WaitFor(cubeb->ForceAudioThread()).unwrap();
Unused << unforcer;
CubebUtils::ForceSetCubebContext(cubeb->AsCubebContext());
RefPtr<AudioCallbackDriver> driver;
auto graph = MakeRefPtr<NiceMock<MockGraphInterface>>(aRate);
EXPECT_CALL(*graph, NotifyInputStopped).Times(0);
Maybe<int64_t> audioStart;
Maybe<uint32_t> alreadyBuffered;
int64_t inputFrameCount = 0;
int64_t outputFrameCount = 0;
int64_t processedFrameCount = 0;
ON_CALL(*graph, NotifyInputData)
.WillByDefault([&](const AudioDataValue*, size_t aFrames, TrackRate,
uint32_t, uint32_t aAlreadyBuffered) {
if (!audioStart) {
audioStart = Some(graph->StateComputedTime());
alreadyBuffered = Some(aAlreadyBuffered);
}
EXPECT_NEAR(inputFrameCount,
static_cast<int64_t>(graph->StateComputedTime() -
*audioStart + *alreadyBuffered),
WEBAUDIO_BLOCK_SIZE)
<< "Input should be behind state time, due to the delayed start. "
"stateComputedTime="
<< graph->StateComputedTime() << ", audioStartTime=" << *audioStart
<< ", alreadyBuffered=" << *alreadyBuffered;
inputFrameCount += aFrames;
});
ON_CALL(*graph, NotifyOutputData)
.WillByDefault([&](AudioDataValue*, size_t aFrames, TrackRate aRate,
uint32_t) { outputFrameCount += aFrames; });
driver = MakeRefPtr<AudioCallbackDriver>(graph, nullptr, aRate, 2, 2, nullptr,
(void*)1, AudioInputType::Voice);
EXPECT_FALSE(driver->ThreadRunning()) << "Verify thread is not running";
EXPECT_FALSE(driver->IsStarted()) << "Verify thread is not started";
graph->SetCurrentDriver(driver);
graph->SetEnsureNextIteration(true);
driver->Start();
RefPtr<SmartMockCubebStream> stream = WaitFor(cubeb->StreamInitEvent());
cubeb->SetStreamStartFreezeEnabled(false);
const size_t fallbackIterations = 3;
WaitUntil(graph->FramesIteratedEvent(), [&](uint32_t aFrames) {
const GraphTime tenMillis = aRate / 100;
// An iteration is always rounded upwards to the next full block.
const GraphTime tenMillisIteration =
MediaTrackGraphImpl::RoundUpToEndOfAudioBlock(tenMillis);
// The iteration may be smaller because up to an extra block may have been
// processed and buffered.
const GraphTime tenMillisMinIteration =
tenMillisIteration - WEBAUDIO_BLOCK_SIZE;
// An iteration must be at least one audio block.
const GraphTime minIteration =
std::max<GraphTime>(WEBAUDIO_BLOCK_SIZE, tenMillisMinIteration);
EXPECT_GE(aFrames, minIteration)
<< "Fallback driver iteration >= 10ms, modulo an audio block";
EXPECT_LT(aFrames, static_cast<size_t>(aRate))
<< "Fallback driver iteration <1s (sanity)";
return graph->IterationCount() >= fallbackIterations;
});
stream->Thaw();
// Wait for at least 100ms of audio data.
WaitUntil(stream->FramesProcessedEvent(), [&](uint32_t aFrames) {
processedFrameCount += aFrames;
return processedFrameCount >= aRate / 10;
});
// This will block untill all events have been executed.
MOZ_KnownLive(driver)->Shutdown();
EXPECT_EQ(inputFrameCount, outputFrameCount);
EXPECT_NEAR(graph->StateComputedTime() - *audioStart,
inputFrameCount + *alreadyBuffered, WEBAUDIO_BLOCK_SIZE)
<< "Graph progresses while audio driver runs. stateComputedTime="
<< graph->StateComputedTime() << ", inputFrameCount=" << inputFrameCount;
}
TEST(TestAudioCallbackDriver, SlowStart)
MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION {
TestSlowStart(1000); // 10ms = 10 <<< 128 samples
TestSlowStart(8000); // 10ms = 80 < 128 samples
TestSlowStart(44100); // 10ms = 441 > 128 samples
}
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