Introduce AudioHardwareConfig for renderer side audio device info.

media/base/audio_hardware_config_unittest.cc

+// Copyright (c) 2013 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/base/audio_hardware_config.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+namespace {

[scherkus (not reviewing), 2013/01/31 02:33:33]

nit: us media folks prefer static as opposed to anon namespaces

alternatively you can also use enums for integer constants

[DaleCurtis, 2013/01/31 19:50:00]

Done.

+
+const int kOutputBufferSize = 2048;
+const int kOutputSampleRate = 48000;
+const int kInputSampleRate = 44100;
+const ChannelLayout kInputChannelLayout = CHANNEL_LAYOUT_STEREO;
+
+}  // namespace
+
+TEST(AudioHardwareConfig, Getters) {
+  AudioHardwareConfig fake_config(
+      kOutputBufferSize, kOutputSampleRate, kInputSampleRate,
+      kInputChannelLayout);
+
+  EXPECT_EQ(kOutputBufferSize, fake_config.GetOutputBufferSize());
+  EXPECT_EQ(kOutputSampleRate, fake_config.GetOutputSampleRate());
+  EXPECT_EQ(kInputSampleRate, fake_config.GetInputSampleRate());
+  EXPECT_EQ(kInputChannelLayout, fake_config.GetInputChannelLayout());
+}
+
+TEST(AudioHardwareConfig, Setters) {
+  AudioHardwareConfig fake_config(
+      kOutputBufferSize, kOutputSampleRate, kInputSampleRate,
+      kInputChannelLayout);
+
+  // Verify output parameters.
+  const int kNewOutputBufferSize = kOutputBufferSize * 2;
+  const int kNewOutputSampleRate = kOutputSampleRate * 2;
+  EXPECT_NE(kNewOutputBufferSize, fake_config.GetOutputBufferSize());
+  EXPECT_NE(kNewOutputSampleRate, fake_config.GetOutputSampleRate());
+  fake_config.UpdateOutputConfig(kNewOutputBufferSize, kNewOutputSampleRate);
+  EXPECT_EQ(kNewOutputBufferSize, fake_config.GetOutputBufferSize());
+  EXPECT_EQ(kNewOutputSampleRate, fake_config.GetOutputSampleRate());
+
+  // Verify input parameters.
+  const int kNewInputSampleRate = kInputSampleRate * 2;
+  const ChannelLayout kNewInputChannelLayout = CHANNEL_LAYOUT_MONO;
+  EXPECT_NE(kNewInputSampleRate, fake_config.GetInputSampleRate());
+  EXPECT_NE(kNewInputChannelLayout, fake_config.GetInputChannelLayout());
+  fake_config.UpdateInputConfig(kNewInputSampleRate, kNewInputChannelLayout);
+  EXPECT_EQ(kNewInputSampleRate, fake_config.GetInputSampleRate());
+  EXPECT_EQ(kNewInputChannelLayout, fake_config.GetInputChannelLayout());
+}
+
+}  // namespace content