device/bluetooth: Add Bluetooth Audio Sink base class.

device/bluetooth/bluetooth_audio_sink.cc

+// Copyright 2014 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 "device/bluetooth/bluetooth_audio_sink.h"
+
+namespace {
+
+// SBC codec(0x00) is the mandatory codec for A2DP audio sink.
+// |capabilities| includes the mandatory support for A2DP audio sink.
+// [Octet0]: 0x3f
+//   Sampling frequency [0 0 1 1]: supports 44100 Hz and 48000 Hz.
+//   Channel mode [1 1 1 1]: supports Mono, Dual Channel, Stereo, and Joint
+//                           Stereo.
+// [Octet1]: 0xff
+//    Block length [1, 1, 1, 1]: supports block length of 4, 8, 12 and 16.
+//    Subbands [1, 1]: supports 4 and 8 subbands.
+//    Allocation Method [1, 1]: supports SNR and Loudness.
+// [Octet2]: 0x12
+//    Minimum bitpool value: 18 is the bitpool value for Mono.
+// [Octet3]: 0x35
+//    Maximum bitpool value: 53 is the bitpool value for Joint Stereo.
+  const uint8_t kDefaultCodec = 0x00;
+  const uint8_t kDefaultCapabilities[] = {0x3f, 0xff, 0x12, 0x35};
+
+}  // namespace
+
+namespace device {
+
+BluetoothAudioSink::Options::Options() : codec(kDefaultCodec) {
+  capabilities.assign(kDefaultCapabilities,
+                      kDefaultCapabilities + sizeof(kDefaultCapabilities));
+}
+
+BluetoothAudioSink::Options::~Options() {
+}
+
+BluetoothAudioSink::BluetoothAudioSink() {
+}
+
+BluetoothAudioSink::~BluetoothAudioSink() {
+}
+
+}  // namespace device