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/*
* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "audio/voip/voip_core.h"
#include "api/audio_codecs/builtin_audio_decoder_factory.h"
#include "api/audio_codecs/builtin_audio_encoder_factory.h"
#include "api/task_queue/default_task_queue_factory.h"
#include "modules/audio_device/include/mock_audio_device.h"
#include "modules/audio_processing/include/mock_audio_processing.h"
#include "test/gtest.h"
#include "test/mock_transport.h"
namespace webrtc {
namespace {
using ::testing::NiceMock;
using ::testing::Return;
constexpr int kPcmuPayload = 0;
constexpr int kPcmuSampleRateHz = 8000;
constexpr int kDtmfEventDurationMs = 1000;
constexpr DtmfEvent kDtmfEventCode = DtmfEvent::kDigitZero;
class VoipCoreTest : public ::testing::Test {
public:
const SdpAudioFormat kPcmuFormat = {"pcmu", 8000, 1};
VoipCoreTest() { audio_device_ = test::MockAudioDeviceModule::CreateNice(); }
void SetUp() override {
auto encoder_factory = CreateBuiltinAudioEncoderFactory();
auto decoder_factory = CreateBuiltinAudioDecoderFactory();
rtc::scoped_refptr<AudioProcessing> audio_processing =
rtc::make_ref_counted<NiceMock<test::MockAudioProcessing>>();
voip_core_ = std::make_unique<VoipCore>(
std::move(encoder_factory), std::move(decoder_factory),
CreateDefaultTaskQueueFactory(), audio_device_,
std::move(audio_processing));
}
std::unique_ptr<VoipCore> voip_core_;
NiceMock<MockTransport> transport_;
rtc::scoped_refptr<test::MockAudioDeviceModule> audio_device_;
};
// Validate expected API calls that involves with VoipCore. Some verification is
// involved with checking mock audio device.
TEST_F(VoipCoreTest, BasicVoipCoreOperation) {
// Program mock as non-operational and ready to start.
EXPECT_CALL(*audio_device_, Recording()).WillOnce(Return(false));
EXPECT_CALL(*audio_device_, Playing()).WillOnce(Return(false));
EXPECT_CALL(*audio_device_, InitRecording()).WillOnce(Return(0));
EXPECT_CALL(*audio_device_, InitPlayout()).WillOnce(Return(0));
EXPECT_CALL(*audio_device_, StartRecording()).WillOnce(Return(0));
EXPECT_CALL(*audio_device_, StartPlayout()).WillOnce(Return(0));
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_EQ(voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat),
VoipResult::kOk);
EXPECT_EQ(
voip_core_->SetReceiveCodecs(channel, {{kPcmuPayload, kPcmuFormat}}),
VoipResult::kOk);
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->StartPlayout(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->RegisterTelephoneEventType(channel, kPcmuPayload,
kPcmuSampleRateHz),
VoipResult::kOk);
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kOk);
// Program mock as operational that is ready to be stopped.
EXPECT_CALL(*audio_device_, Recording()).WillOnce(Return(true));
EXPECT_CALL(*audio_device_, Playing()).WillOnce(Return(true));
EXPECT_CALL(*audio_device_, StopRecording()).WillOnce(Return(0));
EXPECT_CALL(*audio_device_, StopPlayout()).WillOnce(Return(0));
EXPECT_EQ(voip_core_->StopSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->StopPlayout(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, ExpectFailToUseReleasedChannelId) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
// Release right after creation.
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
// Now use released channel.
EXPECT_EQ(voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat),
VoipResult::kInvalidArgument);
EXPECT_EQ(
voip_core_->SetReceiveCodecs(channel, {{kPcmuPayload, kPcmuFormat}}),
VoipResult::kInvalidArgument);
EXPECT_EQ(voip_core_->RegisterTelephoneEventType(channel, kPcmuPayload,
kPcmuSampleRateHz),
VoipResult::kInvalidArgument);
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kInvalidArgument);
EXPECT_EQ(voip_core_->StartPlayout(channel), VoipResult::kInvalidArgument);
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kInvalidArgument);
}
TEST_F(VoipCoreTest, SendDtmfEventWithoutRegistering) {
// Program mock as non-operational and ready to start send.
EXPECT_CALL(*audio_device_, Recording()).WillOnce(Return(false));
EXPECT_CALL(*audio_device_, InitRecording()).WillOnce(Return(0));
EXPECT_CALL(*audio_device_, StartRecording()).WillOnce(Return(0));
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_EQ(voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat),
VoipResult::kOk);
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kOk);
// Send Dtmf event without registering beforehand, thus payload
// type is not set and kFailedPrecondition is expected.
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kFailedPrecondition);
// Program mock as sending and is ready to be stopped.
EXPECT_CALL(*audio_device_, Recording()).WillOnce(Return(true));
EXPECT_CALL(*audio_device_, StopRecording()).WillOnce(Return(0));
EXPECT_EQ(voip_core_->StopSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, SendDtmfEventWithoutStartSend) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_EQ(voip_core_->RegisterTelephoneEventType(channel, kPcmuPayload,
kPcmuSampleRateHz),
VoipResult::kOk);
// Send Dtmf event without calling StartSend beforehand, thus
// Dtmf events cannot be sent and kFailedPrecondition is expected.
EXPECT_EQ(
voip_core_->SendDtmfEvent(channel, kDtmfEventCode, kDtmfEventDurationMs),
VoipResult::kFailedPrecondition);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, StartSendAndPlayoutWithoutSettingCodec) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
// Call StartSend and StartPlayout without setting send/receive
// codec. Code should see that codecs aren't set and return false.
EXPECT_EQ(voip_core_->StartSend(channel), VoipResult::kFailedPrecondition);
EXPECT_EQ(voip_core_->StartPlayout(channel), VoipResult::kFailedPrecondition);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
TEST_F(VoipCoreTest, StopSendAndPlayoutWithoutStarting) {
auto channel = voip_core_->CreateChannel(&transport_, 0xdeadc0de);
EXPECT_EQ(voip_core_->SetSendCodec(channel, kPcmuPayload, kPcmuFormat),
VoipResult::kOk);
EXPECT_EQ(
voip_core_->SetReceiveCodecs(channel, {{kPcmuPayload, kPcmuFormat}}),
VoipResult::kOk);
// Call StopSend and StopPlayout without starting them in
// the first place. Should see that it is already in the
// stopped state and return true.
EXPECT_EQ(voip_core_->StopSend(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->StopPlayout(channel), VoipResult::kOk);
EXPECT_EQ(voip_core_->ReleaseChannel(channel), VoipResult::kOk);
}
} // namespace
} // namespace webrtc
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