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 "common_audio/channel_buffer.h"
12
13 #include <cstdint>
14
15 #include "common_audio/include/audio_util.h"
16 #include "rtc_base/checks.h"
17
18 namespace webrtc {
19
IFChannelBuffer(size_t num_frames,size_t num_channels,size_t num_bands)20 IFChannelBuffer::IFChannelBuffer(size_t num_frames,
21 size_t num_channels,
22 size_t num_bands)
23 : ivalid_(true),
24 ibuf_(num_frames, num_channels, num_bands),
25 fvalid_(true),
26 fbuf_(num_frames, num_channels, num_bands) {}
27
28 IFChannelBuffer::~IFChannelBuffer() = default;
29
ibuf()30 ChannelBuffer<int16_t>* IFChannelBuffer::ibuf() {
31 RefreshI();
32 fvalid_ = false;
33 return &ibuf_;
34 }
35
fbuf()36 ChannelBuffer<float>* IFChannelBuffer::fbuf() {
37 RefreshF();
38 ivalid_ = false;
39 return &fbuf_;
40 }
41
ibuf_const() const42 const ChannelBuffer<int16_t>* IFChannelBuffer::ibuf_const() const {
43 RefreshI();
44 return &ibuf_;
45 }
46
fbuf_const() const47 const ChannelBuffer<float>* IFChannelBuffer::fbuf_const() const {
48 RefreshF();
49 return &fbuf_;
50 }
51
RefreshF() const52 void IFChannelBuffer::RefreshF() const {
53 if (!fvalid_) {
54 RTC_DCHECK(ivalid_);
55 fbuf_.set_num_channels(ibuf_.num_channels());
56 const int16_t* const* int_channels = ibuf_.channels();
57 float* const* float_channels = fbuf_.channels();
58 for (size_t i = 0; i < ibuf_.num_channels(); ++i) {
59 for (size_t j = 0; j < ibuf_.num_frames(); ++j) {
60 float_channels[i][j] = int_channels[i][j];
61 }
62 }
63 fvalid_ = true;
64 }
65 }
66
RefreshI() const67 void IFChannelBuffer::RefreshI() const {
68 if (!ivalid_) {
69 RTC_DCHECK(fvalid_);
70 int16_t* const* int_channels = ibuf_.channels();
71 ibuf_.set_num_channels(fbuf_.num_channels());
72 const float* const* float_channels = fbuf_.channels();
73 for (size_t i = 0; i < fbuf_.num_channels(); ++i) {
74 FloatS16ToS16(float_channels[i], ibuf_.num_frames(), int_channels[i]);
75 }
76 ivalid_ = true;
77 }
78 }
79
80 } // namespace webrtc
81