OLD | NEW |
| (Empty) |
1 /* | |
2 * Copyright (c) 2012 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/main/acm2/acm_resampler.h" | |
12 | |
13 #include <assert.h> | |
14 #include <string.h> | |
15 | |
16 #include "webrtc/common_audio/resampler/include/resampler.h" | |
17 #include "webrtc/system_wrappers/include/logging.h" | |
18 | |
19 namespace webrtc { | |
20 namespace acm2 { | |
21 | |
22 ACMResampler::ACMResampler() { | |
23 } | |
24 | |
25 ACMResampler::~ACMResampler() { | |
26 } | |
27 | |
28 int ACMResampler::Resample10Msec(const int16_t* in_audio, | |
29 int in_freq_hz, | |
30 int out_freq_hz, | |
31 int num_audio_channels, | |
32 size_t out_capacity_samples, | |
33 int16_t* out_audio) { | |
34 size_t in_length = static_cast<size_t>(in_freq_hz * num_audio_channels / 100); | |
35 int out_length = out_freq_hz * num_audio_channels / 100; | |
36 if (in_freq_hz == out_freq_hz) { | |
37 if (out_capacity_samples < in_length) { | |
38 assert(false); | |
39 return -1; | |
40 } | |
41 memcpy(out_audio, in_audio, in_length * sizeof(int16_t)); | |
42 return static_cast<int>(in_length / num_audio_channels); | |
43 } | |
44 | |
45 if (resampler_.InitializeIfNeeded(in_freq_hz, out_freq_hz, | |
46 num_audio_channels) != 0) { | |
47 LOG_FERR3(LS_ERROR, InitializeIfNeeded, in_freq_hz, out_freq_hz, | |
48 num_audio_channels); | |
49 return -1; | |
50 } | |
51 | |
52 out_length = | |
53 resampler_.Resample(in_audio, in_length, out_audio, out_capacity_samples); | |
54 if (out_length == -1) { | |
55 LOG_FERR4(LS_ERROR, | |
56 Resample, | |
57 in_audio, | |
58 in_length, | |
59 out_audio, | |
60 out_capacity_samples); | |
61 return -1; | |
62 } | |
63 | |
64 return out_length / num_audio_channels; | |
65 } | |
66 | |
67 } // namespace acm2 | |
68 } // namespace webrtc | |
OLD | NEW |