| // Copyright 2016 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_MANAGER_WINRT_H_ |
| #define MEDIA_MIDI_MIDI_MANAGER_WINRT_H_ |
| |
| #include <memory> |
| |
| #include "base/strings/string16.h" |
| #include "base/thread_annotations.h" |
| #include "media/midi/midi_manager.h" |
| |
| namespace midi { |
| |
| class MidiService; |
| |
| class MIDI_EXPORT MidiManagerWinrt final : public MidiManager { |
| public: |
| class MidiInPortManager; |
| class MidiOutPortManager; |
| |
| explicit MidiManagerWinrt(MidiService* service); |
| ~MidiManagerWinrt() override; |
| |
| // MidiManager overrides: |
| void StartInitialization() final; |
| void DispatchSendMidiData(MidiManagerClient* client, |
| uint32_t port_index, |
| const std::vector<uint8_t>& data, |
| base::TimeTicks timestamp) final; |
| |
| private: |
| // Subclasses that access private/protected members of MidiManager. |
| template <typename InterfaceType, |
| typename RuntimeType, |
| typename StaticsInterfaceType, |
| base::char16 const* runtime_class_id> |
| class MidiPortManager; |
| |
| // Callbacks on kComTaskRunner. |
| void InitializeOnComRunner(); |
| void SendOnComRunner(uint32_t port_index, const std::vector<uint8_t>& data); |
| |
| // Callback from MidiPortManager::OnEnumerationComplete on kComTaskRunner. |
| // Calls CompleteInitialization() when both MidiPortManagers are ready. |
| void OnPortManagerReady(); |
| |
| // Lock to ensure all smart pointers initialized in InitializeOnComRunner() |
| // and destroyed in FinalizeOnComRunner() will not be accidentally destructed |
| // twice in the destructor. |
| base::Lock lazy_init_member_lock_; |
| |
| // All operations to Midi{In|Out}PortManager should be done on kComTaskRunner. |
| std::unique_ptr<MidiInPortManager> port_manager_in_ |
| GUARDED_BY(lazy_init_member_lock_); |
| std::unique_ptr<MidiOutPortManager> port_manager_out_ |
| GUARDED_BY(lazy_init_member_lock_); |
| |
| // Incremented when a MidiPortManager is ready. |
| uint8_t port_manager_ready_count_ = 0; |
| |
| DISALLOW_COPY_AND_ASSIGN(MidiManagerWinrt); |
| }; |
| |
| } // namespace midi |
| |
| #endif // MEDIA_MIDI_MIDI_MANAGER_WINRT_H_ |