| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MEDIA_MIDI_MIDI_SCHEDULER_H_ |
| #define MEDIA_MIDI_MIDI_SCHEDULER_H_ |
| |
| #include "base/callback.h" |
| #include "base/memory/weak_ptr.h" |
| #include "media/midi/midi_export.h" |
| |
| namespace media { |
| namespace midi { |
| |
| class MidiManager; |
| class MidiManagerClient; |
| |
| // TODO(crbug.com/467442): Make tasks cancelable per client. |
| class MIDI_EXPORT MidiScheduler final { |
| public: |
| explicit MidiScheduler(MidiManager* manager); |
| ~MidiScheduler(); |
| |
| // Post |closure| to the current message loop safely. The |closure| will not |
| // be invoked after MidiScheduler is deleted. AccumulateMidiBytesSent() of |
| // |client| is called internally. |
| void PostSendDataTask(MidiManagerClient* client, |
| size_t length, |
| double timestamp, |
| const base::Closure& closure); |
| |
| private: |
| void InvokeClosure(MidiManagerClient* client, |
| size_t length, |
| const base::Closure& closure); |
| |
| // MidiManager should own the MidiScheduler and be alive longer. |
| MidiManager* manager_; |
| base::WeakPtrFactory<MidiScheduler> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MidiScheduler); |
| }; |
| |
| } // namespace midi |
| } // namespace media |
| |
| #endif // MEDIA_MIDI_MIDI_SCHEDULER_H_ |