Handle invalid hardware output parameters in AudioRendererHost.

content/renderer/media/audio_renderer_mixer_manager.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 "content/renderer/media/audio_renderer_mixer_manager.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 70 matching lines @@
   }
 
   media::AudioParameters hardware_params =
       sink->GetOutputDevice()->GetOutputParameters();
 
 // On ChromeOS we can rely on the playback device to handle resampling, so
 // don't waste cycles on it here.
 #if defined(OS_CHROMEOS)
   int sample_rate = params.sample_rate();
 #else
-  int sample_rate = hardware_params.sample_rate();
+  int sample_rate =
+      hardware_params.format() != media::AudioParameters::AUDIO_FAKE
+          ? hardware_params.sample_rate()
+          : params.sample_rate();
 #endif
 
+  int buffer_size =
+      hardware_params.format() != media::AudioParameters::AUDIO_FAKE
+          ? media::AudioHardwareConfig::GetHighLatencyBufferSize(
+                hardware_params)
+          : params.frames_per_buffer();
+
   // Create output parameters based on the audio hardware configuration for
   // passing on to the output sink.  Force to 16-bit output for now since we
   // know that works everywhere; ChromeOS does not support other bit depths.
   media::AudioParameters output_params(
       media::AudioParameters::AUDIO_PCM_LOW_LATENCY, params.channel_layout(),
-      sample_rate, 16,
-      media::AudioHardwareConfig::GetHighLatencyBufferSize(hardware_params));
+      sample_rate, 16, buffer_size);
 
   // If we've created invalid output parameters, simply pass on the input
   // params and let the browser side handle automatic fallback.
   if (!output_params.IsValid())
     output_params = params;
 
   media::AudioRendererMixer* mixer =
       new media::AudioRendererMixer(params, output_params, sink);
   AudioRendererMixerReference mixer_reference = { mixer, 1 };
   mixers_[key] = mixer_reference;
@@ skipping 24 matching lines @@
     int source_render_frame_id,
     const media::AudioParameters& params,
     const std::string& device_id,
     const url::Origin& security_origin)
     : source_render_frame_id(source_render_frame_id),
       params(params),
       device_id(device_id),
       security_origin(security_origin) {}
 
 }  // namespace content