block_delay_buffer.h (1309B)
1 /* 2 * Copyright (c) 2018 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_PROCESSING_AEC3_BLOCK_DELAY_BUFFER_H_ 12 #define MODULES_AUDIO_PROCESSING_AEC3_BLOCK_DELAY_BUFFER_H_ 13 14 #include <stddef.h> 15 16 #include <vector> 17 18 #include "modules/audio_processing/audio_buffer.h" 19 20 namespace webrtc { 21 22 // Class for applying a fixed delay to the samples in a signal partitioned using 23 // the audiobuffer band-splitting scheme. 24 class BlockDelayBuffer { 25 public: 26 BlockDelayBuffer(size_t num_channels, 27 size_t num_bands, 28 size_t frame_length, 29 size_t delay_samples); 30 ~BlockDelayBuffer(); 31 32 // Delays the samples by the specified delay. 33 void DelaySignal(AudioBuffer* frame); 34 35 private: 36 const size_t frame_length_; 37 const size_t delay_; 38 std::vector<std::vector<std::vector<float>>> buf_; 39 size_t last_insert_ = 0; 40 }; 41 } // namespace webrtc 42 43 #endif // MODULES_AUDIO_PROCESSING_AEC3_BLOCK_DELAY_BUFFER_H_