device/bluetooth/bluetooth_audio_sink.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "device/bluetooth/bluetooth_audio_sink.h"
   6
   7 namespace {
   8
   9 // SBC codec(0x00) is the mandatory codec for A2DP audio sink.
  10 // |capabilities| includes the mandatory support for A2DP audio sink.
  11 // [Octet0]: 0x3f
  12 //   Sampling frequency [0 0 1 1]: supports 44100 Hz and 48000 Hz.
  13 //   Channel mode [1 1 1 1]: supports Mono, Dual Channel, Stereo, and Joint
  14 //                           Stereo.
  15 // [Octet1]: 0xff
  16 //    Block length [1, 1, 1, 1]: supports block length of 4, 8, 12 and 16.
  17 //    Subbands [1, 1]: supports 4 and 8 subbands.
  18 //    Allocation Method [1, 1]: supports SNR and Loudness.
  19 // [Octet2]: 0x12
  20 //    Minimum bitpool value: 18 is the bitpool value for Mono.
  21 // [Octet3]: 0x35
  22 //    Maximum bitpool value: 53 is the bitpool value for Joint Stereo.
  23   const uint8_t kDefaultCodec = 0x00;
  24   const uint8_t kDefaultCapabilities[] = {0x3f, 0xff, 0x12, 0x35};
  25
  26 }  // namespace
  27
  28 namespace device {
  29
  30 // static
  31 const uint16_t BluetoothAudioSink::kInvalidVolume = 128;
  32
  33 BluetoothAudioSink::Options::Options() : codec(kDefaultCodec) {
  34   capabilities.assign(kDefaultCapabilities,
  35                       kDefaultCapabilities + sizeof(kDefaultCapabilities));
  36 }
  37
  38 BluetoothAudioSink::Options::~Options() {
  39 }
  40
  41 BluetoothAudioSink::BluetoothAudioSink() {
  42 }
  43
  44 BluetoothAudioSink::~BluetoothAudioSink() {
  45 }
  46
  47 }  // namespace device