| // Copyright (c) 2012 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/logging.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "content/renderer/media/audio_renderer_mixer_manager.h" |
| #include "ipc/ipc_message.h" |
| #include "media/audio/audio_parameters.h" |
| #include "media/base/audio_hardware_config.h" |
| #include "media/base/audio_renderer_mixer.h" |
| #include "media/base/audio_renderer_mixer_input.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" |
| |
| namespace content { |
| |
| static const int kBitsPerChannel = 16; |
| static const int kSampleRate = 48000; |
| static const int kBufferSize = 8192; |
| static const media::ChannelLayout kChannelLayout = media::CHANNEL_LAYOUT_STEREO; |
| |
| static const int kRenderViewId = 123; |
| static const int kRenderFrameId = 124; |
| static const int kAnotherRenderViewId = 456; |
| static const int kAnotherRenderFrameId = 678; |
| |
| using media::AudioParameters; |
| |
| class AudioRendererMixerManagerTest : public testing::Test { |
| public: |
| AudioRendererMixerManagerTest() |
| : fake_config_(AudioParameters(), AudioParameters()) { |
| AudioParameters output_params( |
| media::AudioParameters::AUDIO_PCM_LOW_LATENCY, |
| media::CHANNEL_LAYOUT_STEREO, |
| kSampleRate, |
| 16, |
| kBufferSize); |
| fake_config_.UpdateOutputConfig(output_params); |
| |
| manager_.reset(new AudioRendererMixerManager(&fake_config_)); |
| |
| // We don't want to deal with instantiating a real AudioOutputDevice since |
| // it's not important to our testing, so we inject a mock. |
| mock_sink_ = new media::MockAudioRendererSink(); |
| manager_->SetAudioRendererSinkForTesting(mock_sink_.get()); |
| } |
| |
| media::AudioRendererMixer* GetMixer(int source_render_view_id, |
| const media::AudioParameters& params) { |
| return manager_->GetMixer(source_render_view_id, MSG_ROUTING_NONE, params); |
| } |
| |
| void RemoveMixer(int source_render_view_id, |
| const media::AudioParameters& params) { |
| return manager_->RemoveMixer(source_render_view_id, params); |
| } |
| |
| // Number of instantiated mixers. |
| int mixer_count() { |
| return manager_->mixers_.size(); |
| } |
| |
| protected: |
| media::AudioHardwareConfig fake_config_; |
| scoped_ptr<AudioRendererMixerManager> manager_; |
| scoped_refptr<media::MockAudioRendererSink> mock_sink_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AudioRendererMixerManagerTest); |
| }; |
| |
| // Verify GetMixer() and RemoveMixer() both work as expected; particularly with |
| // respect to the explicit ref counting done. |
| TEST_F(AudioRendererMixerManagerTest, GetRemoveMixer) { |
| // Since we're testing two different sets of parameters, we expect |
| // AudioRendererMixerManager to call Start and Stop on our mock twice. |
| EXPECT_CALL(*mock_sink_.get(), Start()).Times(2); |
| EXPECT_CALL(*mock_sink_.get(), Stop()).Times(2); |
| |
| // There should be no mixers outstanding to start with. |
| EXPECT_EQ(mixer_count(), 0); |
| |
| media::AudioParameters params1( |
| media::AudioParameters::AUDIO_PCM_LINEAR, kChannelLayout, kSampleRate, |
| kBitsPerChannel, kBufferSize); |
| |
| media::AudioRendererMixer* mixer1 = GetMixer(kRenderViewId, params1); |
| ASSERT_TRUE(mixer1); |
| EXPECT_EQ(mixer_count(), 1); |
| |
| // The same parameters should return the same mixer1. |
| EXPECT_EQ(mixer1, GetMixer(kRenderViewId, params1)); |
| EXPECT_EQ(mixer_count(), 1); |
| |
| // Remove the extra mixer we just acquired. |
| RemoveMixer(kRenderViewId, params1); |
| EXPECT_EQ(mixer_count(), 1); |
| |
| media::AudioParameters params2( |
| media::AudioParameters::AUDIO_PCM_LINEAR, kChannelLayout, kSampleRate * 2, |
| kBitsPerChannel, kBufferSize * 2); |
| media::AudioRendererMixer* mixer2 = GetMixer(kRenderViewId, params2); |
| ASSERT_TRUE(mixer2); |
| EXPECT_EQ(mixer_count(), 2); |
| |
| // Different parameters should result in a different mixer1. |
| EXPECT_NE(mixer1, mixer2); |
| |
| // Remove both outstanding mixers. |
| RemoveMixer(kRenderViewId, params1); |
| EXPECT_EQ(mixer_count(), 1); |
| RemoveMixer(kRenderViewId, params2); |
| EXPECT_EQ(mixer_count(), 0); |
| } |
| |
| // Verify CreateInput() provides AudioRendererMixerInput with the appropriate |
| // callbacks and they are working as expected. Also, verify that separate |
| // mixers are created for separate render views, even though the AudioParameters |
| // are the same. |
| TEST_F(AudioRendererMixerManagerTest, CreateInput) { |
| // Expect AudioRendererMixerManager to call Start and Stop on our mock twice |
| // each. Note: Under normal conditions, each mixer would get its own sink! |
| EXPECT_CALL(*mock_sink_.get(), Start()).Times(2); |
| EXPECT_CALL(*mock_sink_.get(), Stop()).Times(2); |
| |
| media::AudioParameters params( |
| media::AudioParameters::AUDIO_PCM_LINEAR, kChannelLayout, kSampleRate, |
| kBitsPerChannel, kBufferSize); |
| |
| // Create two mixer inputs and ensure this doesn't instantiate any mixers yet. |
| EXPECT_EQ(mixer_count(), 0); |
| media::FakeAudioRenderCallback callback(0); |
| scoped_refptr<media::AudioRendererMixerInput> input( |
| manager_->CreateInput(kRenderViewId, kRenderFrameId)); |
| input->Initialize(params, &callback); |
| EXPECT_EQ(mixer_count(), 0); |
| media::FakeAudioRenderCallback another_callback(1); |
| scoped_refptr<media::AudioRendererMixerInput> another_input( |
| manager_->CreateInput(kAnotherRenderViewId, kAnotherRenderFrameId)); |
| another_input->Initialize(params, &another_callback); |
| EXPECT_EQ(mixer_count(), 0); |
| |
| // Implicitly test that AudioRendererMixerInput was provided with the expected |
| // callbacks needed to acquire an AudioRendererMixer and remove it. |
| input->Start(); |
| EXPECT_EQ(mixer_count(), 1); |
| another_input->Start(); |
| EXPECT_EQ(mixer_count(), 2); |
| |
| // Destroying the inputs should destroy the mixers. |
| input->Stop(); |
| input = NULL; |
| EXPECT_EQ(mixer_count(), 1); |
| another_input->Stop(); |
| another_input = NULL; |
| EXPECT_EQ(mixer_count(), 0); |
| } |
| |
| } // namespace content |