1 /*
2  *  Copyright (c) 2014 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 MODULES_AUDIO_CODING_NETEQ_TOOLS_RESAMPLE_INPUT_AUDIO_FILE_H_
12 #define MODULES_AUDIO_CODING_NETEQ_TOOLS_RESAMPLE_INPUT_AUDIO_FILE_H_
13 
14 #include <string>
15 
16 #include "common_audio/resampler/include/resampler.h"
17 #include "modules/audio_coding/neteq/tools/input_audio_file.h"
18 #include "rtc_base/constructor_magic.h"
19 
20 namespace webrtc {
21 namespace test {
22 
23 // Class for handling a looping input audio file with resampling.
24 class ResampleInputAudioFile : public InputAudioFile {
25  public:
26   ResampleInputAudioFile(const std::string file_name,
27                          int file_rate_hz,
28                          bool loop_at_end = true)
InputAudioFile(file_name,loop_at_end)29       : InputAudioFile(file_name, loop_at_end),
30         file_rate_hz_(file_rate_hz),
31         output_rate_hz_(-1) {}
32   ResampleInputAudioFile(const std::string file_name,
33                          int file_rate_hz,
34                          int output_rate_hz,
35                          bool loop_at_end = true)
InputAudioFile(file_name,loop_at_end)36       : InputAudioFile(file_name, loop_at_end),
37         file_rate_hz_(file_rate_hz),
38         output_rate_hz_(output_rate_hz) {}
39 
40   bool Read(size_t samples, int output_rate_hz, int16_t* destination);
41   bool Read(size_t samples, int16_t* destination) override;
42   void set_output_rate_hz(int rate_hz);
43 
44  private:
45   const int file_rate_hz_;
46   int output_rate_hz_;
47   Resampler resampler_;
48   RTC_DISALLOW_COPY_AND_ASSIGN(ResampleInputAudioFile);
49 };
50 
51 }  // namespace test
52 }  // namespace webrtc
53 #endif  // MODULES_AUDIO_CODING_NETEQ_TOOLS_RESAMPLE_INPUT_AUDIO_FILE_H_
54