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
  18 class MidiServiceWinDelegate {
  19  public:
  20   virtual ~MidiServiceWinDelegate() {}
  21   virtual void OnCompleteInitialization(MidiResult result) = 0;
  22   virtual void OnAddInputPort(MidiPortInfo info) = 0;
  23   virtual void OnAddOutputPort(MidiPortInfo info) = 0;
  24   virtual void OnSetInputPortState(uint32 port_index, MidiPortState state) = 0;
  25   virtual void OnSetOutputPortState(uint32 port_index, MidiPortState state) = 0;
  26   virtual void OnReceiveMidiData(uint32 port_index,
  27                                  const std::vector<uint8>& data,
  28                                  base::TimeTicks time) = 0;
  29 };
  30
  31 class MidiServiceWin {
  32  public:
  33   virtual ~MidiServiceWin() {}
  34   // This method may return before the initialization is completed.
  35   virtual void InitializeAsync(MidiServiceWinDelegate* delegate) = 0;
  36   // This method may return before the specified data is actually sent.
  37   virtual void SendMidiDataAsync(uint32 port_number,
  38                                  const std::vector<uint8>& data,
  39                                  base::TimeTicks time) = 0;
  40 };
  41
  42 class MidiManagerWin final : public MidiManager, public MidiServiceWinDelegate {
  43  public:
  44   MidiManagerWin() {}
  45   ~MidiManagerWin() override { midi_service_.reset(); }
  46
  47   // MidiManager overrides:
  48   void StartInitialization() final;
  49   void DispatchSendMidiData(MidiManagerClient* client,
  50                             uint32 port_index,
  51                             const std::vector<uint8>& data,
  52                             double timestamp) final;
  53
  54   // MidiServiceWinDelegate overrides:
  55   void OnCompleteInitialization(MidiResult result) final {
  56     CompleteInitialization(result);
  57   }
  58   void OnAddInputPort(MidiPortInfo info) final { AddInputPort(info); }
  59   void OnAddOutputPort(MidiPortInfo info) final { AddOutputPort(info); }
  60   void OnSetInputPortState(uint32 port_index, MidiPortState state) final {
  61     SetInputPortState(port_index, state);
  62   }
  63   void OnSetOutputPortState(uint32 port_index, MidiPortState state) final {
  64     SetOutputPortState(port_index, state);
  65   }
  66   void OnReceiveMidiData(uint32 port_index,
  67                          const std::vector<uint8>& data,
  68                          base::TimeTicks time) final {
  69     ReceiveMidiData(port_index, &data[0], data.size(), time);
  70   }
  71
  72  private:
  73   scoped_ptr<MidiServiceWin> midi_service_;
  74   DISALLOW_COPY_AND_ASSIGN(MidiManagerWin);
  75 };
  76
  77 }  // namespace media
  78
  79 #endif  // MEDIA_MIDI_MIDI_MANAGER_WIN_H_