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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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_SCHEDULER_H_ | 5 #ifndef MEDIA_MIDI_MIDI_SCHEDULER_H_ |
6 #define MEDIA_MIDI_MIDI_SCHEDULER_H_ | 6 #define MEDIA_MIDI_MIDI_SCHEDULER_H_ |
7 | 7 |
8 #include "base/callback.h" | 8 #include "base/callback.h" |
9 #include "base/memory/weak_ptr.h" | 9 #include "base/memory/weak_ptr.h" |
10 #include "media/base/media_export.h" | 10 #include "media/midi/midi_export.h" |
11 | 11 |
12 namespace media { | 12 namespace media { |
13 | 13 |
14 class MidiManager; | 14 class MidiManager; |
15 class MidiManagerClient; | 15 class MidiManagerClient; |
16 | 16 |
17 // TODO(crbug.com/467442): Make tasks cancelable per client. | 17 // TODO(crbug.com/467442): Make tasks cancelable per client. |
18 class MEDIA_EXPORT MidiScheduler final { | 18 class MIDI_EXPORT MidiScheduler final { |
19 public: | 19 public: |
20 explicit MidiScheduler(MidiManager* manager); | 20 explicit MidiScheduler(MidiManager* manager); |
21 ~MidiScheduler(); | 21 ~MidiScheduler(); |
22 | 22 |
23 // Post |closure| to the current message loop safely. The |closure| will not | 23 // Post |closure| to the current message loop safely. The |closure| will not |
24 // be invoked after MidiScheduler is deleted. AccumulateMidiBytesSent() of | 24 // be invoked after MidiScheduler is deleted. AccumulateMidiBytesSent() of |
25 // |client| is called internally. | 25 // |client| is called internally. |
26 void PostSendDataTask(MidiManagerClient* client, | 26 void PostSendDataTask(MidiManagerClient* client, |
27 size_t length, | 27 size_t length, |
28 double timestamp, | 28 double timestamp, |
29 const base::Closure& closure); | 29 const base::Closure& closure); |
30 | 30 |
31 private: | 31 private: |
32 void InvokeClosure(MidiManagerClient* client, | 32 void InvokeClosure(MidiManagerClient* client, |
33 size_t length, | 33 size_t length, |
34 const base::Closure& closure); | 34 const base::Closure& closure); |
35 | 35 |
36 // MidiManager should own the MidiScheduler and be alive longer. | 36 // MidiManager should own the MidiScheduler and be alive longer. |
37 MidiManager* manager_; | 37 MidiManager* manager_; |
38 base::WeakPtrFactory<MidiScheduler> weak_factory_; | 38 base::WeakPtrFactory<MidiScheduler> weak_factory_; |
39 | 39 |
40 DISALLOW_COPY_AND_ASSIGN(MidiScheduler); | 40 DISALLOW_COPY_AND_ASSIGN(MidiScheduler); |
41 }; | 41 }; |
42 | 42 |
43 } // namespace media | 43 } // namespace media |
44 | 44 |
45 #endif // MEDIA_MIDI_MIDI_SCHEDULER_H_ | 45 #endif // MEDIA_MIDI_MIDI_SCHEDULER_H_ |
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