Adding input and output audio backend to Android.

media/audio/android/opensles_util.h

Index: media/audio/android/opensles_util.h
diff --git a/media/audio/android/opensles_util.h b/media/audio/android/opensles_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..53b544f99ded1d547390fa20c2260b787cea7854
--- /dev/null
+++ b/media/audio/android/opensles_util.h
@@ -0,0 +1,44 @@
+// 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 MEDIA_AUDIO_OPENSLES_UTIL_H_

[qinmin, 2012/04/02 13:28:54]

missing ANDROID

[no longer working on chromium, 2012/04/02 15:17:38]

Sorry, I missed this in the previous set.

Done now.

+#define MEDIA_AUDIO_OPENSLES_UTIL_H_

[qinmin, 2012/04/02 13:28:54]

this too

[no longer working on chromium, 2012/04/02 15:17:38]

Done.

+
+#include "base/logging.h"
+#include <SLES/OpenSLES.h>
+
+namespace media {
+
+template <typename SLType, typename SLDerefType>
+class ScopedSLObject {
+ public:
+  ScopedSLObject() : obj_(NULL) {}
+
+  ~ScopedSLObject() { Reset(); }
+
+  SLType* Receive() {
+    DCHECK(!obj_);
+    return &obj_;
+  }
+
+  SLDerefType operator->() { return *obj_; }
+
+  SLType Get() const { return obj_; }
+
+  void Reset() {
+    if (obj_) {
+      (*obj_)->Destroy(obj_);
+      obj_ = NULL;
+    }
+  }
+
+ private:
+  SLType obj_;
+};
+
+typedef ScopedSLObject<SLObjectItf, const SLObjectItf_*> ScopedSLObjectItf;
+
+}  // namespace media
+
+#endif  // MEDIA_AUDIO_OPENSLES_UTIL_H_

[qinmin, 2012/04/02 13:28:54]

same here

[no longer working on chromium, 2012/04/02 15:17:38]

Done.