media/midi/midi_manager.cc

   1 // Copyright (c) 2013 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 "media/midi/midi_manager.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9
  10 namespace media {
  11
  12 #if !defined(OS_MACOSX) && !defined(OS_WIN) && !defined(USE_ALSA)
  13 // TODO(toyoshim): implement MIDIManager for other platforms.
  14 MIDIManager* MIDIManager::Create() {
  15   return new MIDIManager;
  16 }
  17 #endif
  18
  19 MIDIManager::MIDIManager()
  20     : initialized_(false) {
  21 }
  22
  23 MIDIManager::~MIDIManager() {
  24 }
  25
  26 bool MIDIManager::StartSession(MIDIManagerClient* client) {
  27   // Lazily initialize the MIDI back-end.
  28   if (!initialized_)
  29     initialized_ = Initialize();
  30
  31   if (initialized_) {
  32     base::AutoLock auto_lock(clients_lock_);
  33     clients_.insert(client);
  34   }
  35
  36   return initialized_;
  37 }
  38
  39 void MIDIManager::EndSession(MIDIManagerClient* client) {
  40   base::AutoLock auto_lock(clients_lock_);
  41   ClientList::iterator i = clients_.find(client);
  42   if (i != clients_.end())
  43     clients_.erase(i);
  44 }
  45
  46 void MIDIManager::DispatchSendMIDIData(MIDIManagerClient* client,
  47                                        uint32 port_index,
  48                                        const std::vector<uint8>& data,
  49                                        double timestamp) {
  50   NOTREACHED();
  51 }
  52
  53 bool MIDIManager::Initialize() {
  54   return false;
  55 }
  56
  57 void MIDIManager::AddInputPort(const MIDIPortInfo& info) {
  58   input_ports_.push_back(info);
  59 }
  60
  61 void MIDIManager::AddOutputPort(const MIDIPortInfo& info) {
  62   output_ports_.push_back(info);
  63 }
  64
  65 void MIDIManager::ReceiveMIDIData(
  66     uint32 port_index,
  67     const uint8* data,
  68     size_t length,
  69     double timestamp) {
  70   base::AutoLock auto_lock(clients_lock_);
  71
  72   for (ClientList::iterator i = clients_.begin(); i != clients_.end(); ++i)
  73     (*i)->ReceiveMIDIData(port_index, data, length, timestamp);
  74 }
  75
  76 }  // namespace media