1/*
2 *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
12#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
13
14#include <stdio.h>
15
16#include <string>
17
18#include "webrtc/base/constructormagic.h"
19#include "webrtc/typedefs.h"
20
21namespace webrtc {
22namespace test {
23
24// Class for handling a looping input audio file.
25class InputAudioFile {
26 public:
27  explicit InputAudioFile(const std::string file_name);
28
29  virtual ~InputAudioFile();
30
31  // Reads |samples| elements from source file to |destination|. Returns true
32  // if the read was successful, otherwise false. If the file end is reached,
33  // the file is rewound and reading continues from the beginning.
34  // The output |destination| must have the capacity to hold |samples| elements.
35  bool Read(size_t samples, int16_t* destination);
36
37  // Creates a multi-channel signal from a mono signal. Each sample is repeated
38  // |channels| times to create an interleaved multi-channel signal where all
39  // channels are identical. The output |destination| must have the capacity to
40  // hold samples * channels elements. Note that |source| and |destination| can
41  // be the same array (i.e., point to the same address).
42  static void DuplicateInterleaved(const int16_t* source, size_t samples,
43                                   size_t channels, int16_t* destination);
44
45 private:
46  FILE* fp_;
47  DISALLOW_COPY_AND_ASSIGN(InputAudioFile);
48};
49
50}  // namespace test
51}  // namespace webrtc
52#endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_INPUT_AUDIO_FILE_H_
53