Éanna Ó Catháin | c6ab02a | 2021-04-07 14:35:25 +0100 | [diff] [blame] | 1 | // |
| 2 | // Copyright © 2020 Arm Ltd and Contributors. All rights reserved. |
| 3 | // SPDX-License-Identifier: MIT |
| 4 | // |
| 5 | |
| 6 | #pragma once |
| 7 | |
| 8 | #include <string> |
| 9 | #include <iostream> |
| 10 | |
| 11 | #include <math.h> |
| 12 | |
| 13 | #include <vector> |
| 14 | |
| 15 | #include <exception> |
| 16 | |
| 17 | #include "SlidingWindow.hpp" |
| 18 | |
| 19 | namespace asr |
| 20 | { |
| 21 | |
| 22 | /** |
| 23 | * @brief Class used to capture the audio data loaded from file, and to provide a method of |
| 24 | * extracting correctly positioned and appropriately sized audio windows |
| 25 | * |
| 26 | */ |
| 27 | class AudioCapture |
| 28 | { |
| 29 | public: |
| 30 | |
| 31 | SlidingWindow<const float> m_window; |
| 32 | int lastReadIdx= 0; |
| 33 | |
| 34 | /** |
| 35 | * @brief Default constructor |
| 36 | */ |
| 37 | AudioCapture() |
| 38 | {}; |
| 39 | |
| 40 | /** |
| 41 | * @brief Function to load the audio data captured from the |
| 42 | * input file to memory. |
| 43 | */ |
| 44 | std::vector<float> LoadAudioFile(std::string filePath); |
| 45 | |
| 46 | /** |
| 47 | * @brief Function to initialize the sliding window. This will set its position in memory, its |
| 48 | * window size and its stride. |
| 49 | */ |
| 50 | void InitSlidingWindow(float* data, size_t dataSize, int minSamples, size_t stride); |
| 51 | |
| 52 | /** |
| 53 | * Checks whether there is another block of audio in memory to read |
| 54 | */ |
| 55 | bool HasNext(); |
| 56 | |
| 57 | /** |
| 58 | * Retrieves the next block of audio if its available |
| 59 | */ |
| 60 | std::vector<float> Next(); |
| 61 | }; |
| 62 | } // namespace asr |