media/midi/midi_manager_win.h

   1 // Copyright 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_WIN_H_
   6 #define MEDIA_MIDI_MIDI_MANAGER_WIN_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/threading/thread.h"
  13 #include "base/time/time.h"
  14 #include "media/midi/midi_manager.h"
  15
  16 namespace media {
  17 namespace midi {
  18
  19 class MidiServiceWinDelegate {
  20  public:
  21   virtual ~MidiServiceWinDelegate() {}
  22   virtual void OnCompleteInitialization(Result result) = 0;
  23   virtual void OnAddInputPort(MidiPortInfo info) = 0;
  24   virtual void OnAddOutputPort(MidiPortInfo info) = 0;
  25   virtual void OnSetInputPortState(uint32 port_index, MidiPortState state) = 0;
  26   virtual void OnSetOutputPortState(uint32 port_index, MidiPortState state) = 0;
  27   virtual void OnReceiveMidiData(uint32 port_index,
  28                                  const std::vector<uint8>& data,
  29                                  base::TimeTicks time) = 0;
  30 };
  31
  32 class MidiServiceWin {
  33  public:
  34   virtual ~MidiServiceWin() {}
  35   // This method may return before the initialization is completed.
  36   virtual void InitializeAsync(MidiServiceWinDelegate* delegate) = 0;
  37   // This method may return before the specified data is actually sent.
  38   virtual void SendMidiDataAsync(uint32 port_number,
  39                                  const std::vector<uint8>& data,
  40                                  base::TimeTicks time) = 0;
  41 };
  42
  43 class MidiManagerWin final : public MidiManager, public MidiServiceWinDelegate {
  44  public:
  45   MidiManagerWin();
  46   ~MidiManagerWin() override;
  47
  48   // MidiManager overrides:
  49   void StartInitialization() final;
  50   void DispatchSendMidiData(MidiManagerClient* client,
  51                             uint32 port_index,
  52                             const std::vector<uint8>& data,
  53                             double timestamp) final;
  54
  55   // MidiServiceWinDelegate overrides:
  56   void OnCompleteInitialization(Result result) final;
  57   void OnAddInputPort(MidiPortInfo info) final;
  58   void OnAddOutputPort(MidiPortInfo info) final;
  59   void OnSetInputPortState(uint32 port_index, MidiPortState state) final;
  60   void OnSetOutputPortState(uint32 port_index, MidiPortState state) final;
  61   void OnReceiveMidiData(uint32 port_index,
  62                          const std::vector<uint8>& data,
  63                          base::TimeTicks time) final;
  64
  65  private:
  66   scoped_ptr<MidiServiceWin> midi_service_;
  67   DISALLOW_COPY_AND_ASSIGN(MidiManagerWin);
  68 };
  69
  70 }  // namespace midi
  71 }  // namespace media
  72
  73 #endif  // MEDIA_MIDI_MIDI_MANAGER_WIN_H_