Piping for host-side audio capture

Review URL: https://chromiumcodereview.appspot.com/10692082

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@146623 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 32 insertions, 0 deletions

diff --git a/remoting/host/audio_capturer.h b/remoting/host/audio_capturer.h
new file mode 100644
index 0000000..90aa2e1
--- /dev/null
+++ b/remoting/host/audio_capturer.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2012 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 REMOTING_HOST_AUDIO_CAPTURER_H_
+#define REMOTING_HOST_AUDIO_CAPTURER_H_
+
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "remoting/proto/audio.pb.h"
+
+namespace remoting {
+
+class AudioCapturer {
+ public:
+  typedef base::Callback<void(scoped_ptr<AudioPacket> packet)>
+      PacketCapturedCallback;
+
+  virtual ~AudioCapturer() {}
+
+  static scoped_ptr<AudioCapturer> Create();
+
+  // Capturers should sample at a 44.1 kHz sampling rate, in uncompressed PCM
+  // stereo format. Capturers may choose the number of frames per packet.
+  virtual void Start(const PacketCapturedCallback& callback) = 0;
+  virtual void Stop() = 0;
+  virtual bool IsRunning() = 0;
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_AUDIO_CAPTURER_H_