opensles_util.h revision eb525c5499e34cc9c4b825d6d9e75bb07cc06ace 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef MEDIA_AUDIO_ANDROID_OPENSLES_UTIL_H_
6#define MEDIA_AUDIO_ANDROID_OPENSLES_UTIL_H_
7
8#include <SLES/OpenSLES.h>
9
10#include "base/logging.h"
11
12namespace media {
13
14template <typename SLType, typename SLDerefType>
15class ScopedSLObject {
16 public:
17  ScopedSLObject() : obj_(NULL) {}
18
19  ~ScopedSLObject() { Reset(); }
20
21  SLType* Receive() {
22    DCHECK(!obj_);
23    return &obj_;
24  }
25
26  SLDerefType operator->() { return *obj_; }
27
28  SLType Get() const { return obj_; }
29
30  void Reset() {
31    if (obj_) {
32      (*obj_)->Destroy(obj_);
33      obj_ = NULL;
34    }
35  }
36
37 private:
38  SLType obj_;
39};
40
41typedef ScopedSLObject<SLObjectItf, const SLObjectItf_*> ScopedSLObjectItf;
42
43}  // namespace media
44
45#endif  // MEDIA_AUDIO_ANDROID_OPENSLES_UTIL_H_
46