Index: content/renderer/media/midi_message_filter.h |
diff --git a/content/renderer/media/midi_message_filter.h b/content/renderer/media/midi_message_filter.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..10673a1ab60329a519c5bd322715580a89667c70 |
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+++ b/content/renderer/media/midi_message_filter.h |
@@ -0,0 +1,87 @@ |
+// Copyright (c) 2013 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 CONTENT_RENDERER_MEDIA_MIDI_MESSAGE_FILTER_H_ |
+#define CONTENT_RENDERER_MEDIA_MIDI_MESSAGE_FILTER_H_ |
+ |
+#include "base/memory/scoped_ptr.h" |
+#include "content/common/content_export.h" |
+#include "ipc/ipc_channel_proxy.h" |
+#include <vector> |
+ |
+#include "third_party/WebKit/Source/Platform/chromium/public/WebMIDIAccessor.h" |
+ |
+namespace base { |
+class MessageLoopProxy; |
+} |
+ |
+namespace content { |
+ |
+// MessageFilter that handles MIDI messages. |
+class CONTENT_EXPORT MIDIMessageFilter |
+ : public IPC::ChannelProxy::MessageFilter { |
+ public: |
+ explicit MIDIMessageFilter( |
+ const scoped_refptr<base::MessageLoopProxy>& io_message_loop); |
+ |
+ // Getter for the one MIDIMessageFilter object. |
+ static MIDIMessageFilter* Get(); |
+ |
+ // IO message loop associated with this message filter. |
+ scoped_refptr<base::MessageLoopProxy> io_message_loop() const { |
+ return io_message_loop_; |
+ } |
+ |
+ void AddClient(WebKit::WebMIDIAccessor::Client* client); |
+ void RemoveClient(WebKit::WebMIDIAccessor::Client* client); |
+ |
+ protected: |
+ virtual ~MIDIMessageFilter(); |
+ |
+ private: |
+ // Sends an IPC message using |channel_|. |
+ void Send(IPC::Message* message); |
+ |
+ // IPC::ChannelProxy::MessageFilter override. Called on |io_message_loop|. |
+ virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; |
+ virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE; |
+ virtual void OnFilterRemoved() OVERRIDE; |
+ virtual void OnChannelClosing() OVERRIDE; |
+ |
+ // Called when browser process has approved (or denied) |
+ // access to MIDI hardware. |
+ void OnAccessApproved(int access, bool success); |
+ |
+ // Called when the browser process has sent MIDI data containing one or |
+ // more messages. |
+ void OnDataReceived(int port, |
+ const std::vector<uint8>& data, |
+ double timestamp); |
+ |
+ |
+ |
+ void HandleDataReceived(int port, |
+ const std::vector<uint8>& data, |
+ double timestamp); |
+ |
+ |
+ // IPC channel for Send(); must only be accesed on |io_message_loop_|. |
+ IPC::Channel* channel_; |
+ |
+ // Message loop on which IPC calls are driven. |
+ const scoped_refptr<base::MessageLoopProxy> io_message_loop_; |
+ |
+ // The singleton instance for this filter. |
+ static MIDIMessageFilter* g_filter; |
+ |
+ WebKit::WebMIDIAccessor::Client* client_; |
+ // For main thread!!!!!!!!!! |
+ base::MessageLoop* message_loop_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(MIDIMessageFilter); |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_RENDERER_MEDIA_MIDI_MESSAGE_FILTER_H_ |