media: Increase the default audio buffer size for encrypted streams

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 29 matching lines @@
     MediaLog* media_log)
     : task_runner_(task_runner),
       expecting_config_changes_(false),
       sink_(sink),
       media_log_(media_log),
       client_(nullptr),
       tick_clock_(new base::DefaultTickClock()),
       last_audio_memory_usage_(0),
       last_decoded_sample_rate_(0),
       last_decoded_channel_layout_(CHANNEL_LAYOUT_NONE),
+      is_encrypted_(false),
       playback_rate_(0.0),
       state_(kUninitialized),
       create_audio_decoders_cb_(create_audio_decoders_cb),
       buffering_state_(BUFFERING_HAVE_NOTHING),
       rendering_(false),
       sink_playing_(false),
       pending_read_(false),
       received_end_of_stream_(false),
       rendered_end_of_stream_(false),
       is_suspending_(false),
@@ skipping 387 matching lines @@
 
     audio_parameters_.Reset(hw_params.format(), renderer_channel_layout,
                             sample_rate, hw_params.bits_per_sample(),
                             media::AudioLatency::GetHighLatencyBufferSize(
                                 sample_rate, preferred_buffer_size));
   }
 
   last_decoded_channel_layout_ =
       stream->audio_decoder_config().channel_layout();
 
+  is_encrypted_ = stream->audio_decoder_config().is_encrypted();
+
   audio_clock_.reset(
       new AudioClock(base::TimeDelta(), audio_parameters_.sample_rate()));
 
   audio_buffer_stream_->Initialize(
       stream, base::Bind(&AudioRendererImpl::OnAudioBufferStreamInitialized,
                          weak_factory_.GetWeakPtr()),
       cdm_context, base::Bind(&AudioRendererImpl::OnStatisticsUpdate,
                               weak_factory_.GetWeakPtr()),
       base::Bind(&AudioRendererImpl::OnWaitingForDecryptionKey,
                  weak_factory_.GetWeakPtr()));
@@ skipping 18 matching lines @@
     base::ResetAndReturn(&init_cb_).Run(PIPELINE_ERROR_INITIALIZATION_FAILED);
     return;
   }
 
   if (expecting_config_changes_)
     buffer_converter_.reset(new AudioBufferConverter(audio_parameters_));
 
   // We're all good! Continue initializing the rest of the audio renderer
   // based on the decoder format.
   algorithm_.reset(new AudioRendererAlgorithm());
-  algorithm_->Initialize(audio_parameters_);
+  algorithm_->Initialize(audio_parameters_, is_encrypted_);
   ConfigureChannelMask();
 
   ChangeState_Locked(kFlushed);
 
   {
     base::AutoUnlock auto_unlock(lock_);
     sink_->Initialize(audio_parameters_, this);
     sink_->Start();
 
     // Some sinks play on start...
@@ skipping 503 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