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#include "webrtc/modules/audio_coding/neteq/tools/resample_input_audio_file.h"
12
13#include "webrtc/base/checks.h"
14#include "webrtc/base/scoped_ptr.h"
15
16namespace webrtc {
17namespace test {
18
19bool ResampleInputAudioFile::Read(size_t samples,
20                                  int output_rate_hz,
21                                  int16_t* destination) {
22  const size_t samples_to_read = samples * file_rate_hz_ / output_rate_hz;
23  RTC_CHECK_EQ(samples_to_read * output_rate_hz, samples * file_rate_hz_)
24      << "Frame size and sample rates don't add up to an integer.";
25  rtc::scoped_ptr<int16_t[]> temp_destination(new int16_t[samples_to_read]);
26  if (!InputAudioFile::Read(samples_to_read, temp_destination.get()))
27    return false;
28  resampler_.ResetIfNeeded(file_rate_hz_, output_rate_hz, 1);
29  size_t output_length = 0;
30  RTC_CHECK_EQ(resampler_.Push(temp_destination.get(), samples_to_read,
31                               destination, samples, output_length),
32               0);
33  RTC_CHECK_EQ(samples, output_length);
34  return true;
35}
36
37bool ResampleInputAudioFile::Read(size_t samples, int16_t* destination) {
38  RTC_CHECK_GT(output_rate_hz_, 0) << "Output rate not set.";
39  return Read(samples, output_rate_hz_, destination);
40}
41
42void ResampleInputAudioFile::set_output_rate_hz(int rate_hz) {
43  output_rate_hz_ = rate_hz;
44}
45
46}  // namespace test
47}  // namespace webrtc
48