| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/message_loop/message_loop.h" |
| #include "base/run_loop.h" |
| #include "content/renderer/media/webaudiosourceprovider_impl.h" |
| #include "media/audio/audio_parameters.h" |
| #include "media/base/fake_audio_render_callback.h" |
| #include "media/base/mock_audio_renderer_sink.h" |
| #include "testing/gmock/include/gmock/gmock.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "third_party/WebKit/public/platform/WebAudioSourceProviderClient.h" |
| |
| namespace content { |
| |
| namespace { |
| const float kTestVolume = 0.25; |
| } // namespace |
| |
| class WebAudioSourceProviderImplTest |
| : public testing::Test, |
| public blink::WebAudioSourceProviderClient { |
| public: |
| WebAudioSourceProviderImplTest() |
| : params_(media::AudioParameters::AUDIO_PCM_LINEAR, |
| media::CHANNEL_LAYOUT_STEREO, 48000, 16, 64), |
| fake_callback_(0.1), |
| mock_sink_(new media::MockAudioRendererSink()), |
| wasp_impl_(new WebAudioSourceProviderImpl(mock_sink_)) { |
| } |
| |
| virtual ~WebAudioSourceProviderImplTest() {} |
| |
| void CallAllSinkMethodsAndVerify(bool verify) { |
| testing::InSequence s; |
| |
| EXPECT_CALL(*mock_sink_.get(), Start()).Times(verify); |
| wasp_impl_->Start(); |
| |
| EXPECT_CALL(*mock_sink_.get(), Play()).Times(verify); |
| wasp_impl_->Play(); |
| |
| EXPECT_CALL(*mock_sink_.get(), Pause()).Times(verify); |
| wasp_impl_->Pause(); |
| |
| EXPECT_CALL(*mock_sink_.get(), SetVolume(kTestVolume)).Times(verify); |
| wasp_impl_->SetVolume(kTestVolume); |
| |
| EXPECT_CALL(*mock_sink_.get(), Stop()).Times(verify); |
| wasp_impl_->Stop(); |
| |
| testing::Mock::VerifyAndClear(mock_sink_.get()); |
| } |
| |
| void SetClient(blink::WebAudioSourceProviderClient* client) { |
| testing::InSequence s; |
| |
| if (client) { |
| EXPECT_CALL(*mock_sink_.get(), Stop()); |
| EXPECT_CALL(*this, setFormat(params_.channels(), params_.sample_rate())); |
| } |
| wasp_impl_->setClient(client); |
| base::RunLoop().RunUntilIdle(); |
| |
| testing::Mock::VerifyAndClear(mock_sink_.get()); |
| testing::Mock::VerifyAndClear(this); |
| } |
| |
| bool CompareBusses(const media::AudioBus* bus1, const media::AudioBus* bus2) { |
| EXPECT_EQ(bus1->channels(), bus2->channels()); |
| EXPECT_EQ(bus1->frames(), bus2->frames()); |
| for (int ch = 0; ch < bus1->channels(); ++ch) { |
| if (memcmp(bus1->channel(ch), bus2->channel(ch), |
| sizeof(*bus1->channel(ch)) * bus1->frames()) != 0) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // blink::WebAudioSourceProviderClient implementation. |
| MOCK_METHOD2(setFormat, void(size_t numberOfChannels, float sampleRate)); |
| |
| protected: |
| media::AudioParameters params_; |
| media::FakeAudioRenderCallback fake_callback_; |
| scoped_refptr<media::MockAudioRendererSink> mock_sink_; |
| scoped_refptr<WebAudioSourceProviderImpl> wasp_impl_; |
| base::MessageLoop message_loop_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WebAudioSourceProviderImplTest); |
| }; |
| |
| TEST_F(WebAudioSourceProviderImplTest, SetClientBeforeInitialize) { |
| // setClient() with a NULL client should do nothing if no client is set. |
| wasp_impl_->setClient(NULL); |
| |
| EXPECT_CALL(*mock_sink_.get(), Stop()); |
| wasp_impl_->setClient(this); |
| base::RunLoop().RunUntilIdle(); |
| |
| // When Initialize() is called after setClient(), the params should propagate |
| // to the client via setFormat() during the call. |
| EXPECT_CALL(*this, setFormat(params_.channels(), params_.sample_rate())); |
| wasp_impl_->Initialize(params_, &fake_callback_); |
| base::RunLoop().RunUntilIdle(); |
| |
| // setClient() with the same client should do nothing. |
| wasp_impl_->setClient(this); |
| base::RunLoop().RunUntilIdle(); |
| } |
| |
| // Verify AudioRendererSink functionality w/ and w/o a client. |
| TEST_F(WebAudioSourceProviderImplTest, SinkMethods) { |
| wasp_impl_->Initialize(params_, &fake_callback_); |
| ASSERT_EQ(mock_sink_->callback(), &fake_callback_); |
| |
| // Without a client all WASP calls should fall through to the underlying sink. |
| CallAllSinkMethodsAndVerify(true); |
| |
| // With a client no calls should reach the Stop()'d sink. Also, setClient() |
| // should propagate the params provided during Initialize() at call time. |
| SetClient(this); |
| CallAllSinkMethodsAndVerify(false); |
| |
| // Removing the client should cause WASP to revert to the underlying sink. |
| EXPECT_CALL(*mock_sink_.get(), SetVolume(kTestVolume)); |
| SetClient(NULL); |
| CallAllSinkMethodsAndVerify(true); |
| } |
| |
| // Verify underlying sink state is restored after client removal. |
| TEST_F(WebAudioSourceProviderImplTest, SinkStateRestored) { |
| wasp_impl_->Initialize(params_, &fake_callback_); |
| |
| // Verify state set before the client is set propagates back afterward. |
| EXPECT_CALL(*mock_sink_.get(), Start()); |
| wasp_impl_->Start(); |
| SetClient(this); |
| |
| EXPECT_CALL(*mock_sink_.get(), SetVolume(1.0)); |
| EXPECT_CALL(*mock_sink_.get(), Start()); |
| SetClient(NULL); |
| |
| // Verify state set while the client was attached propagates back afterward. |
| SetClient(this); |
| wasp_impl_->Play(); |
| wasp_impl_->SetVolume(kTestVolume); |
| |
| EXPECT_CALL(*mock_sink_.get(), SetVolume(kTestVolume)); |
| EXPECT_CALL(*mock_sink_.get(), Start()); |
| EXPECT_CALL(*mock_sink_.get(), Play()); |
| SetClient(NULL); |
| } |
| |
| // Test the AudioRendererSink state machine and its effects on provideInput(). |
| TEST_F(WebAudioSourceProviderImplTest, ProvideInput) { |
| scoped_ptr<media::AudioBus> bus1 = media::AudioBus::Create(params_); |
| scoped_ptr<media::AudioBus> bus2 = media::AudioBus::Create(params_); |
| |
| // Point the WebVector into memory owned by |bus1|. |
| blink::WebVector<float*> audio_data(static_cast<size_t>(bus1->channels())); |
| for (size_t i = 0; i < audio_data.size(); ++i) |
| audio_data[i] = bus1->channel(i); |
| |
| // Verify provideInput() works before Initialize() and returns silence. |
| bus1->channel(0)[0] = 1; |
| bus2->Zero(); |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get())); |
| |
| wasp_impl_->Initialize(params_, &fake_callback_); |
| SetClient(this); |
| |
| // Verify provideInput() is muted prior to Start() and no calls to the render |
| // callback have occurred. |
| bus1->channel(0)[0] = 1; |
| bus2->Zero(); |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get())); |
| ASSERT_EQ(fake_callback_.last_audio_delay_milliseconds(), -1); |
| |
| wasp_impl_->Start(); |
| |
| // Ditto for Play(). |
| bus1->channel(0)[0] = 1; |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get())); |
| ASSERT_EQ(fake_callback_.last_audio_delay_milliseconds(), -1); |
| |
| wasp_impl_->Play(); |
| |
| // Now we should get real audio data. |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_FALSE(CompareBusses(bus1.get(), bus2.get())); |
| |
| // Ensure volume adjustment is working. |
| fake_callback_.reset(); |
| fake_callback_.Render(bus2.get(), 0); |
| bus2->Scale(kTestVolume); |
| |
| fake_callback_.reset(); |
| wasp_impl_->SetVolume(kTestVolume); |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get())); |
| |
| // Pause should return to silence. |
| wasp_impl_->Pause(); |
| bus1->channel(0)[0] = 1; |
| bus2->Zero(); |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get())); |
| |
| // Ensure if a renderer properly fill silence for partial Render() calls by |
| // configuring the fake callback to return half the data. After these calls |
| // bus1 is full of junk data, and bus2 is partially filled. |
| wasp_impl_->SetVolume(1); |
| fake_callback_.Render(bus1.get(), 0); |
| fake_callback_.reset(); |
| fake_callback_.Render(bus2.get(), 0); |
| bus2->ZeroFramesPartial(bus2->frames() / 2, |
| bus2->frames() - bus2->frames() / 2); |
| fake_callback_.reset(); |
| fake_callback_.set_half_fill(true); |
| wasp_impl_->Play(); |
| |
| // Play should return real audio data again, but the last half should be zero. |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get())); |
| |
| // Stop() should return silence. |
| wasp_impl_->Stop(); |
| bus1->channel(0)[0] = 1; |
| bus2->Zero(); |
| wasp_impl_->provideInput(audio_data, params_.frames_per_buffer()); |
| ASSERT_TRUE(CompareBusses(bus1.get(), bus2.get())); |
| } |
| |
| } // namespace content |