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Unified Diff: content/browser/renderer_host/media/midi_host.h

Issue 16025005: Web MIDI API back-end (work-in-progress) (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: add stub for non-OSX MIDIManagers Created 7 years, 6 months ago
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Index: content/browser/renderer_host/media/midi_host.h
diff --git a/content/browser/renderer_host/media/midi_host.h b/content/browser/renderer_host/media/midi_host.h
new file mode 100644
index 0000000000000000000000000000000000000000..e46ed539f3804c41c751c1728ea9a25140c80b4e
--- /dev/null
+++ b/content/browser/renderer_host/media/midi_host.h
@@ -0,0 +1,62 @@
+// 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_BROWSER_RENDERER_HOST_MEDIA_MIDI_HOST_H_
+#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_HOST_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
+#include "content/public/browser/browser_message_filter.h"
+#include "content/public/browser/browser_thread.h"
+#include "media/midi/midi_manager.h"
+
+namespace media {
+class MIDIManager;
+}
+
+namespace content {
+
+class CONTENT_EXPORT MIDIHost
+ : public BrowserMessageFilter,
+ public media::MIDIManagerClient {
+ public:
+ // Called from UI thread from the owner of this object.
+ MIDIHost(media::MIDIManager* midi_manager);
+
+ // BrowserMessageFilter implementation.
+ virtual void OnChannelClosing() OVERRIDE;
+ virtual void OnDestruct() const OVERRIDE;
+ virtual bool OnMessageReceived(const IPC::Message& message,
+ bool* message_was_ok) OVERRIDE;
+
+ // MIDIManagerClient implementation.
+ virtual void ReceiveMIDIData(
+ int port_index,
+ const uint8* data,
+ size_t length,
palmer 2013/06/19 21:39:15 Does it make sense to subsume |data| and |length|
Chris Rogers 2013/06/20 17:41:33 For this layer, I've chosen data and length to avo
+ double timestamp) OVERRIDE;
+
+ // Request access to MIDI hardware.
+ void OnRequestAccess(int client_id, int access);
+
+ // Data to be sent to a MIDI output port.
+ void OnSendData(int port,
+ const std::vector<uint8>& data,
+ double timestamp);
+
+ private:
+ friend class base::DeleteHelper<MIDIHost>;
+ friend class BrowserThread;
+
+ virtual ~MIDIHost();
+
+ media::MIDIManager* const midi_manager_;
+
+ DISALLOW_COPY_AND_ASSIGN(MIDIHost);
+};
+
+} // namespace content
+
+#endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_HOST_H_

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