oboe/tests/testReturnStop.cpp at main · google/oboe · GitHub

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* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

#include <atomic>

#include <tuple>

#include <gtest/gtest.h>

#include <oboe/Oboe.h>

// Test returning DataCallbackResult::Stop from a callback.

using namespace oboe;

static constexpr int kTimeoutInNanos = 500 * kNanosPerMillisecond;

class ReturnStopCallback : public AudioStreamDataCallback {

public:

DataCallbackResult onAudioReady(AudioStream *oboeStream, void *audioData, int32_t numFrames) override {

return (++callbackCount < kMaxCallbacks) ? DataCallbackResult::Continue : DataCallbackResult::Stop;

}

void reset() {

callbackCount = 0;

}

int getMaxCallbacks() const { return kMaxCallbacks; }

std::atomic<int> callbackCount{0};

private:

// I get strange linker errors with GTest if I try to reference this directly.

static constexpr int kMaxCallbacks = 40;

};

using StreamReturnStopParams = std::tuple<Direction, AudioApi, PerformanceMode, bool>;

class StreamReturnStop : public ::testing::Test,

public ::testing::WithParamInterface<StreamReturnStopParams> {

protected:

void TearDown() override;

AudioStreamBuilder mBuilder;

std::shared_ptr<AudioStream> mStream;

};

void StreamReturnStop::TearDown() {

if (mStream) {

mStream->close();

}

TEST_P(StreamReturnStop, VerifyStreamReturnStop) {

const Direction direction = std::get<0>(GetParam());

const AudioApi audioApi = std::get<1>(GetParam());

const PerformanceMode performanceMode = std::get<2>(GetParam());

const bool useRequestStart = std::get<3>(GetParam());

ReturnStopCallback *callback = new ReturnStopCallback();

mBuilder.setDirection(direction)

->setFormat(AudioFormat::I16)

->setPerformanceMode(performanceMode)

->setDataCallback(callback);

if (mBuilder.isAAudioRecommended()) {

mBuilder.setAudioApi(audioApi);

}

Result r = mBuilder.openStream(mStream);

ASSERT_EQ(r, Result::OK) << "Failed to open stream. " << convertToText(r);

// Start and stop several times.

for (int i = 0; i < 3; i++) {

callback->reset();

// Oboe has two ways to start a stream.

if (useRequestStart) {

r = mStream->requestStart();

} else {

r = mStream->start();

}

ASSERT_EQ(r, Result::OK) << "Failed to start stream. " << convertToText(r);

// Wait for callbacks to complete.

const int kMaxCallbackPeriodMillis = 500;

const int kPollPeriodMillis = 20;

int timeout = 2 * callback->getMaxCallbacks() * kMaxCallbackPeriodMillis / kPollPeriodMillis;

do {

usleep(kPollPeriodMillis * 1000);

} while (callback->callbackCount < callback->getMaxCallbacks() && timeout-- > 0);

EXPECT_GT(timeout, 0) << "timed out waiting for enough callbacks";

StreamState next = StreamState::Unknown;

r = mStream->waitForStateChange(StreamState::Started, &next, kTimeoutInNanos);

EXPECT_EQ(r, Result::OK) << "waitForStateChange(Started) timed out. " << convertToText(r);

r = mStream->waitForStateChange(StreamState::Stopping, &next, kTimeoutInNanos);

EXPECT_EQ(r, Result::OK) << "waitForStateChange(Stopping) timed out. " << convertToText(r);

EXPECT_EQ(next, StreamState::Stopped) << "Stream not in state Stopped, was " << convertToText(next);

EXPECT_EQ(callback->callbackCount, callback->getMaxCallbacks()) << "Too many callbacks = " << callback->callbackCount;

const int kOboeStartStopSleepMSec = 10;

usleep(kOboeStartStopSleepMSec * 1000); // avoid race condition in emulator

}

ASSERT_EQ(Result::OK, mStream->close());

}

INSTANTIATE_TEST_SUITE_P(

StreamReturnStopTest,

StreamReturnStop,

::testing::Values(

// Last boolean is true if requestStart() should be called instead of start().

StreamReturnStopParams({Direction::Output, AudioApi::AAudio, PerformanceMode::LowLatency, true}),

StreamReturnStopParams({Direction::Output, AudioApi::AAudio, PerformanceMode::LowLatency, false}),

StreamReturnStopParams({Direction::Output, AudioApi::AAudio, PerformanceMode::None, true}),

StreamReturnStopParams({Direction::Output, AudioApi::AAudio, PerformanceMode::None, false}),

StreamReturnStopParams({Direction::Output, AudioApi::OpenSLES, PerformanceMode::LowLatency, true}),

StreamReturnStopParams({Direction::Output, AudioApi::OpenSLES, PerformanceMode::LowLatency, false}),

StreamReturnStopParams({Direction::Input, AudioApi::AAudio, PerformanceMode::LowLatency, true}),

StreamReturnStopParams({Direction::Input, AudioApi::AAudio, PerformanceMode::LowLatency, false})

)

);

oboe/tests/testReturnStop.cpp at main · google/oboe · GitHub

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