1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
//
// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include <iostream>
#include <map>
#include <vector>
#include <algorithm>
#include <cmath>
#include "CmdArgsParser.hpp"
#include "ArmnnNetworkExecutor.hpp"
#include "AudioCapture.hpp"
#include "SpeechRecognitionPipeline.hpp"
#include "Wav2LetterMFCC.hpp"
using InferenceResult = std::vector<int8_t>;
using InferenceResults = std::vector<InferenceResult>;
const std::string AUDIO_FILE_PATH = "--audio-file-path";
const std::string MODEL_FILE_PATH = "--model-file-path";
const std::string LABEL_PATH = "--label-path";
const std::string PREFERRED_BACKENDS = "--preferred-backends";
const std::string HELP = "--help";
std::map<int, std::string> labels =
{
{0, "a"},
{1, "b"},
{2, "c"},
{3, "d"},
{4, "e"},
{5, "f"},
{6, "g"},
{7, "h"},
{8, "i"},
{9, "j"},
{10, "k"},
{11, "l"},
{12, "m"},
{13, "n"},
{14, "o"},
{15, "p"},
{16, "q"},
{17, "r"},
{18, "s"},
{19, "t"},
{20, "u"},
{21, "v"},
{22, "w"},
{23, "x"},
{24, "y"},
{25, "z"},
{26, "\'"},
{27, " "},
{28, "$"}
};
/*
* The accepted options for this Speech Recognition executable
*/
static std::map<std::string, std::string> CMD_OPTIONS =
{
{AUDIO_FILE_PATH, "[REQUIRED] Path to the Audio file to run speech recognition on"},
{MODEL_FILE_PATH, "[REQUIRED] Path to the Speech Recognition model to use"},
{PREFERRED_BACKENDS, "[OPTIONAL] Takes the preferred backends in preference order, separated by comma."
" For example: CpuAcc,GpuAcc,CpuRef. Accepted options: [CpuAcc, CpuRef, GpuAcc]."
" Defaults to CpuAcc,CpuRef"}
};
/*
* Reads the user supplied backend preference, splits it by comma, and returns an ordered vector
*/
std::vector<armnn::BackendId> GetPreferredBackendList(const std::string& preferredBackends)
{
std::vector<armnn::BackendId> backends;
std::stringstream ss(preferredBackends);
while (ss.good())
{
std::string backend;
std::getline(ss, backend, ',');
backends.emplace_back(backend);
}
return backends;
}
int main(int argc, char* argv[])
{
bool isFirstWindow = true;
std::string currentRContext = "";
std::map<std::string, std::string> options;
int result = ParseOptions(options, CMD_OPTIONS, argv, argc);
if (result != 0)
{
return result;
}
// Create the network options
common::PipelineOptions pipelineOptions;
pipelineOptions.m_ModelFilePath = GetSpecifiedOption(options, MODEL_FILE_PATH);
pipelineOptions.m_ModelName = "Wav2Letter";
if (CheckOptionSpecified(options, PREFERRED_BACKENDS))
{
pipelineOptions.m_backends = GetPreferredBackendList((GetSpecifiedOption(options, PREFERRED_BACKENDS)));
}
else
{
pipelineOptions.m_backends = {"CpuAcc", "CpuRef"};
}
asr::IPipelinePtr asrPipeline = asr::CreatePipeline(pipelineOptions, labels);
audio::AudioCapture capture;
std::vector<float> audioData = audio::AudioCapture::LoadAudioFile(GetSpecifiedOption(options, AUDIO_FILE_PATH));
capture.InitSlidingWindow(audioData.data(), audioData.size(), asrPipeline->getInputSamplesSize(),
asrPipeline->getSlidingWindowOffset());
while (capture.HasNext())
{
std::vector<float> audioBlock = capture.Next();
InferenceResults results;
std::vector<int8_t> preprocessedData = asrPipeline->PreProcessing(audioBlock);
asrPipeline->Inference<int8_t>(preprocessedData, results);
asrPipeline->PostProcessing<int8_t>(results, isFirstWindow, !capture.HasNext(), currentRContext);
}
return 0;
}
|
