Introduce AudioRendererSink::IsOptimizedForHardwareParameters

media/renderers/audio_renderer_impl.cc

 // 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 "media/renderers/audio_renderer_impl.h"
 
 #include <math.h>
 #include <stddef.h>
 #include <algorithm>
 #include <utility>
@@ skipping 347 matching lines @@
   audio_buffer_stream_ = base::MakeUnique<AudioBufferStream>(
       task_runner_, create_audio_decoders_cb_.Run(), media_log_);
 
   audio_buffer_stream_->set_config_change_observer(base::Bind(
       &AudioRendererImpl::OnConfigChange, weak_factory_.GetWeakPtr()));
 
   // Always post |init_cb_| because |this| could be destroyed if initialization
   // failed.
   init_cb_ = BindToCurrentLoop(init_cb);
 
-  auto output_device_info = sink_->GetOutputDeviceInfo();
+  AudioParameters preferred_params(
+      AudioParameters::AUDIO_PCM_LOW_LATENCY,
+      stream->audio_decoder_config().channel_layout(),
+      stream->audio_decoder_config().samples_per_second(),
+      stream->audio_decoder_config().bits_per_channel(),
+      stream->audio_decoder_config().samples_per_second() / 100);
+  auto output_device_info = sink_->GetOutputDeviceInfo(preferred_params);
   const AudioParameters& hw_params = output_device_info.output_params();
   expecting_config_changes_ = stream->SupportsConfigChanges();
   if (!expecting_config_changes_ || !hw_params.IsValid() ||
       hw_params.format() == AudioParameters::AUDIO_FAKE) {
     // The actual buffer size is controlled via the size of the AudioBus
     // provided to Render(), but we should choose a value here based on hardware
     // parameters if possible since it affects the initial buffer size used by
     // the algorithm. Too little will cause underflow on Bluetooth devices.
     int buffer_size =
         std::max(stream->audio_decoder_config().samples_per_second() / 100,
@@ skipping 630 matching lines @@
   // All channels with a zero mix are muted and can be ignored.
   std::vector<bool> channel_mask(audio_parameters_.channels(), false);
   for (size_t ch = 0; ch < matrix.size(); ++ch) {
     channel_mask[ch] = std::any_of(matrix[ch].begin(), matrix[ch].end(),
                                    [](float mix) { return !!mix; });
   }
   algorithm_->SetChannelMask(std::move(channel_mask));
 }
 
 }  // namespace media