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| 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 #ifndef MEDIA_MIDI_MIDI_MANAGER_H_ |
| 6 #define MEDIA_MIDI_MIDI_MANAGER_H_ |
| 7 |
| 8 #include "base/basictypes.h" |
| 9 #include "base/synchronization/lock.h" |
| 10 #include "media/base/media_export.h" |
| 11 #include <set> |
| 12 |
| 13 namespace media { |
| 14 |
| 15 // Manages access to all MIDI hardware. |
| 16 class MEDIA_EXPORT MIDIManager { |
| 17 public: |
| 18 static MIDIManager* Create(); |
| 19 |
| 20 MIDIManager(); |
| 21 virtual ~MIDIManager(); |
| 22 |
| 23 class Client { |
| 24 public: |
| 25 virtual ~Client() {} |
| 26 virtual void ReceiveMIDIData( |
| 27 int port_index, |
| 28 const uint8* data, |
| 29 size_t length, |
| 30 double time_stamp) = 0; |
| 31 }; |
| 32 |
| 33 void AddClient(Client* client); |
| 34 void RemoveClient(Client* client); |
| 35 |
| 36 protected: |
| 37 // Dispatches to all clients. |
| 38 void ReceiveMIDIData( |
| 39 int port_index, |
| 40 const uint8* data, |
| 41 size_t length, |
| 42 double time_stamp); |
| 43 |
| 44 // Keeps track of all clients who wish to receive MIDI data. |
| 45 typedef std::set<Client*> ClientList; |
| 46 ClientList clients_; |
| 47 |
| 48 // Protects access to our clients. |
| 49 base::Lock clients_lock_; |
| 50 |
| 51 DISALLOW_COPY_AND_ASSIGN(MIDIManager); |
| 52 }; |
| 53 |
| 54 } // namespace media |
| 55 |
| 56 #endif // MEDIA_MIDI_MIDI_MANAGER_H_ |
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