[Fuchsia] Move chromium to AudioOut interface

AudioRenderer interface is being replaced with AudioOut. Updated
//media and //chromecast to use the new interface. Also fixed a crash
in FIDL interface handler.

Bug: 873676
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: Ib0f9963fb7b39033bb89a0945a4b8eb5616594cc
Reviewed-on: https://chromium-review.googlesource.com/1175240Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: Kenneth MacKay <kmackay@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583789}

chromecast/media/cma/backend/fuchsia/mixer_output_stream_fuchsia.cc

@@ -28,6 +28,11 @@ constexpr base::TimeDelta kTargetWritePeriod =
 // MixerOutputStreamFuchsia::Write().
 constexpr int kMaxOutputBufferSizeFrames = 4096;
 
+// Current AudioOut implementation allows only one buffer with id=0.
+// TODO(sergeyu): Replace with an incrementing buffer id once AddPayloadBuffer()
+// and RemovePayloadBuffer() are implemented properly in AudioOut.
+const uint32_t kBufferId = 0;
+
 // static
 std::unique_ptr<MixerOutputStream> MixerOutputStream::Create() {
   return std::make_unique<MixerOutputStreamFuchsia>();
@@ -37,7 +42,7 @@ MixerOutputStreamFuchsia::MixerOutputStreamFuchsia() = default;
 MixerOutputStreamFuchsia::~MixerOutputStreamFuchsia() = default;
 
 bool MixerOutputStreamFuchsia::Start(int requested_sample_rate, int channels) {
-  DCHECK(!audio_renderer_);
+  DCHECK(!audio_out_);
   DCHECK(reference_time_.is_null());
 
   sample_rate_ = requested_sample_rate;
@@ -45,12 +50,12 @@ bool MixerOutputStreamFuchsia::Start(int requested_sample_rate, int channels) {
   target_packet_size_ = ::media::AudioTimestampHelper::TimeToFrames(
       kTargetWritePeriod, sample_rate_);
 
-  // Connect |audio_renderer_|.
+  // Connect |audio_out_|.
   fuchsia::media::AudioPtr audio_server =
       base::fuchsia::ComponentContext::GetDefault()
           ->ConnectToService<fuchsia::media::Audio>();
-  audio_server->CreateAudioRenderer2(audio_renderer_.NewRequest());
-  audio_renderer_.set_error_handler(
+  audio_server->CreateAudioOut(audio_out_.NewRequest());
+  audio_out_.set_error_handler(
       fit::bind_member(this, &MixerOutputStreamFuchsia::OnRendererError));
 
   // Configure the renderer.
@@ -58,13 +63,13 @@ bool MixerOutputStreamFuchsia::Start(int requested_sample_rate, int channels) {
   format.sample_format = fuchsia::media::AudioSampleFormat::FLOAT;
   format.channels = channels_;
   format.frames_per_second = sample_rate_;
-  audio_renderer_->SetPcmStreamType(std::move(format));
+  audio_out_->SetPcmStreamType(std::move(format));
 
   // Use number of samples to specify media position.
-  audio_renderer_->SetPtsUnits(sample_rate_, 1);
+  audio_out_->SetPtsUnits(sample_rate_, 1);
 
-  audio_renderer_->EnableMinLeadTimeEvents(true);
-  audio_renderer_.events().OnMinLeadTimeChanged =
+  audio_out_->EnableMinLeadTimeEvents(true);
+  audio_out_.events().OnMinLeadTimeChanged =
       fit::bind_member(this, &MixerOutputStreamFuchsia::OnMinLeadTimeChanged);
 
   return true;
@@ -93,7 +98,7 @@ int MixerOutputStreamFuchsia::OptimalWriteFramesCount() {
 bool MixerOutputStreamFuchsia::Write(const float* data,
                                      int data_size,
                                      bool* out_playback_interrupted) {
-  if (!audio_renderer_)
+  if (!audio_out_)
     return false;
 
   DCHECK_EQ(data_size % channels_, 0);
@@ -125,12 +130,13 @@ bool MixerOutputStreamFuchsia::Write(const float* data,
          data, packet_size);
 
   // Send a new packet.
-  fuchsia::media::AudioPacket packet;
-  packet.timestamp = stream_position_samples_;
+  fuchsia::media::StreamPacket packet;
+  packet.pts = stream_position_samples_;
+  packet.payload_buffer_id = kBufferId;
   packet.payload_offset = payload_buffer_pos_;
   packet.payload_size = packet_size;
   packet.flags = 0;
-  audio_renderer_->SendPacketNoReply(std::move(packet));
+  audio_out_->SendPacketNoReply(std::move(packet));
 
   // Update stream position.
   int frames = data_size / channels_;
@@ -139,7 +145,7 @@ bool MixerOutputStreamFuchsia::Write(const float* data,
 
   if (reference_time_.is_null()) {
     reference_time_ = now + min_lead_time_;
-    audio_renderer_->PlayNoReply(reference_time_.ToZxTime(),
+    audio_out_->PlayNoReply(reference_time_.ToZxTime(),
                             stream_position_samples_ - frames);
   } else {
     // Block the thread to limit amount of buffered data. Currently
@@ -162,7 +168,7 @@ bool MixerOutputStreamFuchsia::Write(const float* data,
 
 void MixerOutputStreamFuchsia::Stop() {
   reference_time_ = base::TimeTicks();
-  audio_renderer_.Unbind();
+  audio_out_.Unbind();
 }
 
 size_t MixerOutputStreamFuchsia::GetMinBufferSize() {
@@ -184,8 +190,8 @@ bool MixerOutputStreamFuchsia::InitializePayloadBuffer() {
   }
 
   payload_buffer_pos_ = 0;
-  audio_renderer_->SetPayloadBuffer(
-      zx::vmo(payload_buffer_.handle().Duplicate().GetHandle()));
+  audio_out_->AddPayloadBuffer(
+      kBufferId, zx::vmo(payload_buffer_.handle().Duplicate().GetHandle()));
 
   return true;
 }

chromecast/media/cma/backend/fuchsia/mixer_output_stream_fuchsia.h

@@ -37,7 +37,7 @@ class MixerOutputStreamFuchsia : public MixerOutputStream {
 
   base::TimeTicks GetCurrentStreamTime();
 
-  // Event handlers for |audio_renderer_|.
+  // Event handlers for |audio_out_|.
   void OnRendererError();
   void OnMinLeadTimeChanged(int64_t min_lead_time);
 
@@ -48,7 +48,7 @@ class MixerOutputStreamFuchsia : public MixerOutputStream {
   int target_packet_size_ = 0;
 
   // Audio renderer connection.
-  fuchsia::media::AudioRenderer2Ptr audio_renderer_;
+  fuchsia::media::AudioOutPtr audio_out_;
 
   base::SharedMemory payload_buffer_;
   size_t payload_buffer_pos_ = 0;

media/audio/audio_output_unittest.cc

@@ -98,13 +98,7 @@ TEST_F(AudioOutputTest, StopTwice) {
 }
 
 // This test produces actual audio for .25 seconds on the default device.
-#if defined(OS_FUCHSIA)
-// TODO(https://crbug.com/873676): Test flakes started when SDK rolled.
-#define MAYBE_Play200HzTone DISABLED_Play200HzTone
-#else
-#define MAYBE_Play200HzTone Play200HzTone
-#endif
-TEST_F(AudioOutputTest, MAYBE_Play200HzTone) {
+TEST_F(AudioOutputTest, Play200HzTone) {
   ABORT_AUDIO_TEST_IF_NOT(audio_manager_device_info_->HasAudioOutputDevices());
 
   stream_params_ =

media/audio/fuchsia/audio_output_stream_fuchsia.cc

@@ -13,6 +13,11 @@
 
 namespace media {
 
+// Current AudioOut implementation allows only one buffer with id=0.
+// TODO(sergeyu): Replace with an incrementing buffer id once AddPayloadBuffer()
+// and RemovePayloadBuffer() are implemented properly in AudioOut.
+const uint32_t kBufferId = 0;
+
 AudioOutputStreamFuchsia::AudioOutputStreamFuchsia(
     AudioManagerFuchsia* manager,
     const AudioParameters& parameters)
@@ -22,36 +27,36 @@ AudioOutputStreamFuchsia::AudioOutputStreamFuchsia(
 
 AudioOutputStreamFuchsia::~AudioOutputStreamFuchsia() {
   // Close() must be called first.
-  DCHECK(!audio_renderer_);
+  DCHECK(!audio_out_);
 }
 
 bool AudioOutputStreamFuchsia::Open() {
-  DCHECK(!audio_renderer_);
+  DCHECK(!audio_out_);
 
-  // Connect |audio_renderer_| to the audio service.
+  // Connect |audio_out_| to the audio service.
   fuchsia::media::AudioPtr audio_server =
       base::fuchsia::ComponentContext::GetDefault()
           ->ConnectToService<fuchsia::media::Audio>();
-  audio_server->CreateAudioRenderer2(audio_renderer_.NewRequest());
-  audio_renderer_.set_error_handler(
+  audio_server->CreateAudioOut(audio_out_.NewRequest());
+  audio_out_.set_error_handler(
       fit::bind_member(this, &AudioOutputStreamFuchsia::OnRendererError));
 
-  // Inform the |audio_renderer_| of the format required by the caller.
+  // Inform the |audio_out_| of the format required by the caller.
   fuchsia::media::AudioStreamType format;
   format.sample_format = fuchsia::media::AudioSampleFormat::FLOAT;
   format.channels = parameters_.channels();
   format.frames_per_second = parameters_.sample_rate();
-  audio_renderer_->SetPcmStreamType(std::move(format));
+  audio_out_->SetPcmStreamType(std::move(format));
 
   // Use number of samples to specify media position.
-  audio_renderer_->SetPtsUnits(parameters_.sample_rate(), 1);
+  audio_out_->SetPtsUnits(parameters_.sample_rate(), 1);
 
   // Setup OnMinLeadTimeChanged event listener. This event is used to get
   // |min_lead_time_|, which indicates how far ahead audio samples need to be
   // sent to the renderer.
-  audio_renderer_.events().OnMinLeadTimeChanged =
+  audio_out_.events().OnMinLeadTimeChanged =
       fit::bind_member(this, &AudioOutputStreamFuchsia::OnMinLeadTimeChanged);
-  audio_renderer_->EnableMinLeadTimeEvents(true);
+  audio_out_->EnableMinLeadTimeEvents(true);
 
   // The renderer may fail initialization asynchronously, which is handled in
   // OnRendererError().
@@ -70,7 +75,7 @@ void AudioOutputStreamFuchsia::Start(AudioSourceCallback* callback) {
 void AudioOutputStreamFuchsia::Stop() {
   callback_ = nullptr;
   reference_time_ = base::TimeTicks();
-  audio_renderer_->FlushNoReply();
+  audio_out_->PauseNoReply();
   timer_.Stop();
 }
 
@@ -85,7 +90,7 @@ void AudioOutputStreamFuchsia::GetVolume(double* volume) {
 
 void AudioOutputStreamFuchsia::Close() {
   Stop();
-  audio_renderer_.Unbind();
+  audio_out_.Unbind();
 
   // Signal to the manager that we're closed and can be removed. This should be
   // the last call in the function as it deletes |this|.
@@ -119,8 +124,8 @@ bool AudioOutputStreamFuchsia::InitializePayloadBuffer() {
   }
 
   payload_buffer_pos_ = 0;
-  audio_renderer_->SetPayloadBuffer(
-      zx::vmo(payload_buffer_.handle().Duplicate().GetHandle()));
+  audio_out_->AddPayloadBuffer(
+      kBufferId, zx::vmo(payload_buffer_.handle().Duplicate().GetHandle()));
 
   return true;
 }
@@ -140,18 +145,23 @@ void AudioOutputStreamFuchsia::OnMinLeadTimeChanged(int64_t min_lead_time) {
 }
 
 void AudioOutputStreamFuchsia::OnRendererError() {
-  LOG(WARNING) << "AudioRenderer has failed.";
-  Stop();
+  LOG(WARNING) << "AudioOut has failed.";
+  ReportError();
+}
+
+void AudioOutputStreamFuchsia::ReportError() {
+  reference_time_ = base::TimeTicks();
+  timer_.Stop();
+  if (callback_)
     callback_->OnError();
 }
 
 void AudioOutputStreamFuchsia::PumpSamples() {
-  DCHECK(audio_renderer_);
+  DCHECK(audio_out_);
 
   // Allocate payload buffer if necessary.
   if (!payload_buffer_.mapped_size() && !InitializePayloadBuffer()) {
-    Stop();
-    callback_->OnError();
+    ReportError();
     return;
   }
 
@@ -186,20 +196,21 @@ void AudioOutputStreamFuchsia::PumpSamples() {
           reinterpret_cast<uint8_t*>(payload_buffer_.memory()) +
           payload_buffer_pos_));
 
-  fuchsia::media::AudioPacket packet;
-  packet.timestamp = stream_position_samples_;
+  fuchsia::media::StreamPacket packet;
+  packet.pts = stream_position_samples_;
+  packet.payload_buffer_id = kBufferId;
   packet.payload_offset = payload_buffer_pos_;
   packet.payload_size = packet_size;
   packet.flags = 0;
 
-  audio_renderer_->SendPacketNoReply(std::move(packet));
+  audio_out_->SendPacketNoReply(std::move(packet));
 
   stream_position_samples_ += frames_filled;
   payload_buffer_pos_ =
       (payload_buffer_pos_ + packet_size) % payload_buffer_.mapped_size();
 
   if (reference_time_.is_null()) {
-    audio_renderer_->Play(
+    audio_out_->Play(
         fuchsia::media::NO_TIMESTAMP, stream_position_samples_ - frames_filled,
         [this](int64_t reference_time, int64_t media_time) {
           if (!callback_)

media/audio/fuchsia/audio_output_stream_fuchsia.h

@@ -41,12 +41,15 @@ class AudioOutputStreamFuchsia : public AudioOutputStream {
 
   base::TimeTicks GetCurrentStreamTime();
 
-  // Event handler for |audio_renderer_|.
+  // Event handler for |audio_out_|.
   void OnMinLeadTimeChanged(int64_t min_lead_time);
 
-  // Error handler for |audio_renderer_|.
+  // Error handler for |audio_out_|.
   void OnRendererError();
 
+  // Resets internal state and reports an error to |callback_|.
+  void ReportError();
+
   // Requests data from AudioSourceCallback, passes it to the mixer and
   // schedules |timer_| for the next call.
   void PumpSamples();
@@ -58,8 +61,7 @@ class AudioOutputStreamFuchsia : public AudioOutputStream {
   AudioManagerFuchsia* manager_;
   AudioParameters parameters_;
 
-  // Audio renderer connection.
-  fuchsia::media::AudioRenderer2Ptr audio_renderer_;
+  fuchsia::media::AudioOutPtr audio_out_;
 
   // |audio_bus_| is used only in PumpSamples(). It is kept here to avoid
   // reallocating the memory every time.

third_party/fuchsia-sdk/BUILD.gn

@@ -219,6 +219,7 @@ fuchsia_sdk_fidl_pkg("media") {
 
   sources = [
     "audio.fidl",
+    "audio_device_enumerator.fidl",
     "audio_in.fidl",
     "audio_out.fidl",
     "audio_renderer.fidl",