media/midi/usb_midi_device_factory_android.h

   1 // Copyright 2014 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_USB_MIDI_DEVICE_FACTORY_ANDROID_H_
   6 #define MEDIA_MIDI_USB_MIDI_DEVICE_FACTORY_ANDROID_H_
   7
   8 #include <jni.h>
   9 #include <vector>
  10
  11 #include "base/android/scoped_java_ref.h"
  12 #include "base/basictypes.h"
  13 #include "base/callback.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "media/midi/usb_midi_device.h"
  16 #include "media/midi/usb_midi_export.h"
  17
  18 namespace media {
  19 namespace midi {
  20
  21 // This class enumerates UsbMidiDevices.
  22 class USB_MIDI_EXPORT UsbMidiDeviceFactoryAndroid
  23       : public UsbMidiDevice::Factory {
  24  public:
  25   UsbMidiDeviceFactoryAndroid();
  26   ~UsbMidiDeviceFactoryAndroid() override;
  27
  28   // UsbMidiDevice::Factory implementation.
  29   void EnumerateDevices(UsbMidiDeviceDelegate* delegate,
  30                         Callback callback) override;
  31
  32   void OnUsbMidiDeviceRequestDone(JNIEnv* env,
  33                                   jobject caller,
  34                                   jobjectArray devices);
  35   void OnUsbMidiDeviceAttached(JNIEnv* env, jobject caller, jobject device);
  36   void OnUsbMidiDeviceDetached(JNIEnv* env, jobject caller, jint index);
  37
  38   static bool RegisterUsbMidiDeviceFactory(JNIEnv* env);
  39
  40  private:
  41   base::android::ScopedJavaGlobalRef<jobject> raw_factory_;
  42   // Not owned.
  43   UsbMidiDeviceDelegate* delegate_;
  44   Callback callback_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(UsbMidiDeviceFactoryAndroid);
  47 };
  48
  49 }  // namespace midi
  50 }  // namespace media
  51
  52 #endif  // MEDIA_MIDI_USB_MIDI_DEVICE_FACTORY_ANDROID_H_