Avoids irregular OnMoreData callbacks on Windows using Core Audio

content/renderer/media/webrtc_audio_device_unittest.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 "base/environment.h"
 #include "base/test/test_timeouts.h"
 #include "content/renderer/media/webrtc_audio_capturer.h"
 #include "content/renderer/media/webrtc_audio_device_impl.h"
 #include "content/renderer/media/webrtc_audio_renderer.h"
 #include "content/renderer/render_thread_impl.h"
@@ skipping 23 matching lines @@
 scoped_ptr<media::AudioHardwareConfig> CreateRealHardwareConfig() {
   return make_scoped_ptr(new media::AudioHardwareConfig(
       media::GetAudioHardwareBufferSize(), media::GetAudioHardwareSampleRate(),
       media::GetAudioInputHardwareSampleRate(
           media::AudioManagerBase::kDefaultDeviceId),
       media::GetAudioInputHardwareChannelLayout(
           media::AudioManagerBase::kDefaultDeviceId)));
 }
 
 // Return true if at least one element in the array matches |value|.
-bool FindElementInArray(int* array, int size, int value) {
+bool FindElementInArray(const int* array, int size, int value) {
   return (std::find(&array[0], &array[0] + size, value) != &array[size]);
 }
 
 // This method returns false if a non-supported rate is detected on the
 // input or output side.
 // TODO(henrika): add support for automatic fallback to Windows Wave audio
 // if a non-supported rate is detected. It is probably better to detect
 // invalid audio settings by actually trying to open the audio streams instead
 // of relying on hard coded conditions.
 bool HardwareSampleRatesAreValid() {
   // These are the currently supported hardware sample rates in both directions.
   // The actual WebRTC client can limit these ranges further depending on
   // platform but this is the maximum range we support today.
   int valid_input_rates[] = {16000, 32000, 44100, 48000, 96000};
-  int valid_output_rates[] = {44100, 48000, 96000};
+  int valid_output_rates[] = {16000, 32000, 44100, 48000, 96000};
 
   media::AudioHardwareConfig* hardware_config =
       RenderThreadImpl::current()->GetAudioHardwareConfig();
 
   // Verify the input sample rate.
   int input_sample_rate = hardware_config->GetInputSampleRate();
 
   if (!FindElementInArray(valid_input_rates, arraysize(valid_input_rates),
                           input_sample_rate)) {
     LOG(WARNING) << "Non-supported input sample rate detected.";
@@ skipping 461 matching lines @@
 
   renderer->Stop();
   EXPECT_EQ(0, base->StopSend(ch));
   EXPECT_EQ(0, base->StopPlayout(ch));
 
   EXPECT_EQ(0, base->DeleteChannel(ch));
   EXPECT_EQ(0, base->Terminate());
 }
 
 }  // namespace content