1 files changed, 69 insertions, 0 deletions
diff --git a/chromium/media/midi/midi_manager_alsa.h b/chromium/media/midi/midi_manager_alsa.h
new file mode 100644
index 00000000000..c523bb91f54
--- /dev/null
+++ b/chromium/media/midi/midi_manager_alsa.h
@@ -0,0 +1,69 @@
+// Copyright 2014 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 MEDIA_MIDI_MIDI_MANAGER_ALSA_H_
+#define MEDIA_MIDI_MIDI_MANAGER_ALSA_H_
+
+#include <alsa/asoundlib.h>
+#include <map>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/synchronization/lock.h"
+#include "base/threading/thread.h"
+#include "media/midi/midi_manager.h"
+
+namespace media {
+
+class MidiManagerAlsa : public MidiManager {
+ public:
+  MidiManagerAlsa();
+  virtual ~MidiManagerAlsa();
+
+  // MidiManager implementation.
+  virtual void StartInitialization() OVERRIDE;
+  virtual void DispatchSendMidiData(MidiManagerClient* client,
+                                    uint32 port_index,
+                                    const std::vector<uint8>& data,
+                                    double timestamp) OVERRIDE;
+
+ private:
+  // An internal callback that runs on MidiSendThread.
+  void SendMidiData(uint32 port_index,
+                    const std::vector<uint8>& data);
+
+  void EventReset();
+  void EventLoop();
+
+  // Alsa seq handles.
+  snd_seq_t* in_client_;
+  snd_seq_t* out_client_;
+  int out_client_id_;
+
+  // One input port, many output ports.
+  int in_port_;
+  std::vector<int> out_ports_;
+
+  // Mapping from Alsa client:port to our index.
+  typedef std::map<int, uint32> SourceMap;
+  SourceMap source_map_;
+
+  // Alsa event <-> MIDI coders.
+  snd_midi_event_t* decoder_;
+  typedef std::vector<snd_midi_event_t*> EncoderList;
+  EncoderList encoders_;
+
+  base::Thread send_thread_;
+  base::Thread event_thread_;
+
+  bool event_thread_shutdown_; // guarded by shutdown_lock_
+  base::Lock shutdown_lock_; // guards event_thread_shutdown_
+
+  DISALLOW_COPY_AND_ASSIGN(MidiManagerAlsa);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_MIDI_MIDI_MANAGER_ALSA_H_