Web MIDI API (work in progress)

Source/core/platform/midi/MIDIAccessorChromium.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef DeviceMotionDispatcher_h
-#define DeviceMotionDispatcher_h
+#ifndef MIDIAccessorChromium_h
+#define MIDIAccessorChromium_h
 
-#include "DeviceMotionData.h"
-#include "wtf/RefPtr.h"
-#include "wtf/Vector.h"
-#include "public/platform/WebDeviceMotionListener.h"
+#include "core/platform/midi/MIDIAccessor.h"
+#include "wtf/OwnPtr.h"
+#include "public/platform/WebMIDIAccessor.h"
+#include "public/platform/WebString.h"
 
-namespace WebKit {
-class WebDeviceMotionData;
-}
+namespace WebCore { 
 
-namespace WebCore {
+class MIDIAccessorChromium : public MIDIAccessor, public WebKit::WebMIDIAccessor::Client {
+public:
+    MIDIAccessorChromium(MIDIAccessorClient*);
+    virtual ~MIDIAccessorChromium() { }
 
-class DeviceMotionController;
-class DeviceMotionData;
+    // MIDIAccessor
+    virtual void requestAccess(int access) OVERRIDE;
+    virtual void sendMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) OVERRIDE;
 
-// This class listens to device motion data and dispatches it to all
-// listening controllers.
-class DeviceMotionDispatcher : public WebKit::WebDeviceMotionListener {
-public:
-    static DeviceMotionDispatcher& instance();
-
-    void addController(DeviceMotionController*);
-    void removeController(DeviceMotionController*);
-
-    // Note that the returned object is owned by this class.
-    // FIXME: make the return value const, see crbug.com/233174.
-    DeviceMotionData* latestDeviceMotionData();
-
-    // This method is called every time new device motion data is available.
-    virtual void didChangeDeviceMotion(const WebKit::WebDeviceMotionData&) OVERRIDE;
+    // WebKit::WebMIDIAccessor::Client
+    virtual void addInputPort(const WebKit::WebString& id, const WebKit::WebString& manufacturer, const WebKit::WebString& name, const WebKit::WebString& version) OVERRIDE;
+    virtual void addOutputPort(const WebKit::WebString& id, const WebKit::WebString& manufacturer, const WebKit::WebString& name, const WebKit::WebString& version) OVERRIDE;
+    virtual void accessApproved(bool approved) OVERRIDE;
+    virtual void receiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) OVERRIDE;
 
 private:
-    DeviceMotionDispatcher();
-    ~DeviceMotionDispatcher();
+    MIDIAccessorClient* m_client;
 
-    void startListening();
-    void stopListening();
-
-    void purgeControllers();
-
-    RefPtr<DeviceMotionData> m_lastDeviceMotionData;
-    Vector<DeviceMotionController*> m_controllers;
+    OwnPtr<WebKit::WebMIDIAccessor> m_accessor;
 };
 
 } // namespace WebCore
 
-#endif // DeviceMotionDispatcher_h
+#endif // MIDIAccessorChromium_h