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/common_audio/channel_buffer.h" 12 13 namespace webrtc { 14 15 IFChannelBuffer::IFChannelBuffer(size_t num_frames, 16 size_t num_channels, 17 size_t num_bands) 18 : ivalid_(true), 19 ibuf_(num_frames, num_channels, num_bands), 20 fvalid_(true), 21 fbuf_(num_frames, num_channels, num_bands) {} 22 23 ChannelBuffer<int16_t>* IFChannelBuffer::ibuf() { 24 RefreshI(); 25 fvalid_ = false; 26 return &ibuf_; 27 } 28 29 ChannelBuffer<float>* IFChannelBuffer::fbuf() { 30 RefreshF(); 31 ivalid_ = false; 32 return &fbuf_; 33 } 34 35 const ChannelBuffer<int16_t>* IFChannelBuffer::ibuf_const() const { 36 RefreshI(); 37 return &ibuf_; 38 } 39 40 const ChannelBuffer<float>* IFChannelBuffer::fbuf_const() const { 41 RefreshF(); 42 return &fbuf_; 43 } 44 45 void IFChannelBuffer::RefreshF() const { 46 if (!fvalid_) { 47 assert(ivalid_); 48 const int16_t* const* int_channels = ibuf_.channels(); 49 float* const* float_channels = fbuf_.channels(); 50 for (size_t i = 0; i < ibuf_.num_channels(); ++i) { 51 for (size_t j = 0; j < ibuf_.num_frames(); ++j) { 52 float_channels[i][j] = int_channels[i][j]; 53 } 54 } 55 fvalid_ = true; 56 } 57 } 58 59 void IFChannelBuffer::RefreshI() const { 60 if (!ivalid_) { 61 assert(fvalid_); 62 int16_t* const* int_channels = ibuf_.channels(); 63 const float* const* float_channels = fbuf_.channels(); 64 for (size_t i = 0; i < ibuf_.num_channels(); ++i) { 65 FloatS16ToS16(float_channels[i], 66 ibuf_.num_frames(), 67 int_channels[i]); 68 } 69 ivalid_ = true; 70 } 71 } 72 73 } // namespace webrtc 74
