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Side by Side Diff: media/midi/midi_manager.h

Issue 1121363002: GN Windows component build fixes (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@component2
Patch Set: . Created 5 years, 7 months ago
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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef MEDIA_MIDI_MIDI_MANAGER_H_ 5 #ifndef MEDIA_MIDI_MIDI_MANAGER_H_
6 #define MEDIA_MIDI_MIDI_MANAGER_H_ 6 #define MEDIA_MIDI_MIDI_MANAGER_H_
7 7
8 #include <set> 8 #include <set>
9 #include <vector> 9 #include <vector>
10 10
11 #include "base/basictypes.h" 11 #include "base/basictypes.h"
12 #include "base/memory/ref_counted.h" 12 #include "base/memory/ref_counted.h"
13 #include "base/synchronization/lock.h" 13 #include "base/synchronization/lock.h"
14 #include "base/time/time.h" 14 #include "base/time/time.h"
15 #include "media/base/media_export.h" 15 #include "media/midi/midi_export.h"
16 #include "media/midi/midi_port_info.h" 16 #include "media/midi/midi_port_info.h"
17 #include "media/midi/midi_result.h" 17 #include "media/midi/midi_result.h"
18 18
19 namespace base { 19 namespace base {
20 class SingleThreadTaskRunner; 20 class SingleThreadTaskRunner;
21 } // namespace base 21 } // namespace base
22 22
23 namespace media { 23 namespace media {
24 24
25 // A MidiManagerClient registers with the MidiManager to receive MIDI data. 25 // A MidiManagerClient registers with the MidiManager to receive MIDI data.
26 // See MidiManager::RequestAccess() and MidiManager::ReleaseAccess() 26 // See MidiManager::RequestAccess() and MidiManager::ReleaseAccess()
27 // for details. 27 // for details.
28 class MEDIA_EXPORT MidiManagerClient { 28 class MIDI_EXPORT MidiManagerClient {
29 public: 29 public:
30 virtual ~MidiManagerClient() {} 30 virtual ~MidiManagerClient() {}
31 31
32 // AddInputPort() and AddOutputPort() are called before CompleteStartSession() 32 // AddInputPort() and AddOutputPort() are called before CompleteStartSession()
33 // is called to notify existing MIDI ports, and also called after that to 33 // is called to notify existing MIDI ports, and also called after that to
34 // notify new MIDI ports are added. 34 // notify new MIDI ports are added.
35 virtual void AddInputPort(const MidiPortInfo& info) = 0; 35 virtual void AddInputPort(const MidiPortInfo& info) = 0;
36 virtual void AddOutputPort(const MidiPortInfo& info) = 0; 36 virtual void AddOutputPort(const MidiPortInfo& info) = 0;
37 37
38 // SetInputPortState() and SetOutputPortState() are called to notify a known 38 // SetInputPortState() and SetOutputPortState() are called to notify a known
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56 double timestamp) = 0; 56 double timestamp) = 0;
57 57
58 // AccumulateMidiBytesSent() is called to acknowledge when bytes have 58 // AccumulateMidiBytesSent() is called to acknowledge when bytes have
59 // successfully been sent to the hardware. 59 // successfully been sent to the hardware.
60 // This happens as a result of the client having previously called 60 // This happens as a result of the client having previously called
61 // MidiManager::DispatchSendMidiData(). 61 // MidiManager::DispatchSendMidiData().
62 virtual void AccumulateMidiBytesSent(size_t n) = 0; 62 virtual void AccumulateMidiBytesSent(size_t n) = 0;
63 }; 63 };
64 64
65 // Manages access to all MIDI hardware. 65 // Manages access to all MIDI hardware.
66 class MEDIA_EXPORT MidiManager { 66 class MIDI_EXPORT MidiManager {
67 public: 67 public:
68 static const size_t kMaxPendingClientCount = 128; 68 static const size_t kMaxPendingClientCount = 128;
69 69
70 MidiManager(); 70 MidiManager();
71 virtual ~MidiManager(); 71 virtual ~MidiManager();
72 72
73 // The constructor and the destructor will be called on the CrBrowserMain 73 // The constructor and the destructor will be called on the CrBrowserMain
74 // thread. 74 // thread.
75 static MidiManager* Create(); 75 static MidiManager* Create();
76 76
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179 // Protects access to |clients_|, |pending_clients_|, |initialized_|, 179 // Protects access to |clients_|, |pending_clients_|, |initialized_|,
180 // |result_|, |input_ports_| and |output_ports_|. 180 // |result_|, |input_ports_| and |output_ports_|.
181 base::Lock lock_; 181 base::Lock lock_;
182 182
183 DISALLOW_COPY_AND_ASSIGN(MidiManager); 183 DISALLOW_COPY_AND_ASSIGN(MidiManager);
184 }; 184 };
185 185
186 } // namespace media 186 } // namespace media
187 187
188 #endif // MEDIA_MIDI_MIDI_MANAGER_H_ 188 #endif // MEDIA_MIDI_MIDI_MANAGER_H_
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