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 #include "base/debug/trace_event.h"
  10
  11 namespace media {
  12
  13 #if !defined(OS_MACOSX) && !defined(OS_WIN) && !defined(USE_ALSA) && \
  14     !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
  15 MidiManager* MidiManager::Create() {
  16   return new MidiManager;
  17 }
  18 #endif
  19
  20 MidiManager::MidiManager()
  21     : initialized_(false) {
  22 }
  23
  24 MidiManager::~MidiManager() {
  25 }
  26
  27 bool MidiManager::StartSession(MidiManagerClient* client) {
  28   // Lazily initialize the MIDI back-end.
  29   if (!initialized_)
  30     initialized_ = Initialize();
  31
  32   if (initialized_) {
  33     base::AutoLock auto_lock(clients_lock_);
  34     clients_.insert(client);
  35   }
  36
  37   return initialized_;
  38 }
  39
  40 void MidiManager::EndSession(MidiManagerClient* client) {
  41   base::AutoLock auto_lock(clients_lock_);
  42   ClientList::iterator i = clients_.find(client);
  43   if (i != clients_.end())
  44     clients_.erase(i);
  45 }
  46
  47 void MidiManager::DispatchSendMidiData(MidiManagerClient* client,
  48                                        uint32 port_index,
  49                                        const std::vector<uint8>& data,
  50                                        double timestamp) {
  51   NOTREACHED();
  52 }
  53
  54 bool MidiManager::Initialize() {
  55   TRACE_EVENT0("midi", "MidiManager::Initialize");
  56   return false;
  57 }
  58
  59 void MidiManager::AddInputPort(const MidiPortInfo& info) {
  60   input_ports_.push_back(info);
  61 }
  62
  63 void MidiManager::AddOutputPort(const MidiPortInfo& info) {
  64   output_ports_.push_back(info);
  65 }
  66
  67 void MidiManager::ReceiveMidiData(
  68     uint32 port_index,
  69     const uint8* data,
  70     size_t length,
  71     double timestamp) {
  72   base::AutoLock auto_lock(clients_lock_);
  73
  74   for (ClientList::iterator i = clients_.begin(); i != clients_.end(); ++i)
  75     (*i)->ReceiveMidiData(port_index, data, length, timestamp);
  76 }
  77
  78 }  // namespace media