wenet-ctc-c-api.c
2.9 KB
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
// c-api-examples/wenet-ctc-c-api.c
//
// Copyright (c) 2025 Xiaomi Corporation
//
// This file demonstrates how to use non-streaming Wenet CTC model with
// sherpa-onnx's C API.
// clang-format off
//
// wget https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-wenetspeech-yue-u2pp-conformer-ctc-zh-en-cantonese-int8-2025-09-10.tar.bz2
// tar xvf sherpa-onnx-wenetspeech-yue-u2pp-conformer-ctc-zh-en-cantonese-int8-2025-09-10.tar.bz2
// rm sherpa-onnx-wenetspeech-yue-u2pp-conformer-ctc-zh-en-cantonese-int8-2025-09-10.tar.bz2
//
// clang-format on
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sherpa-onnx/c-api/c-api.h"
int32_t main() {
// clang-format off
const char *wav_filename = "sherpa-onnx-wenetspeech-yue-u2pp-conformer-ctc-zh-en-cantonese-int8-2025-09-10/test_wavs/yue-0.wav";
const char *model = "sherpa-onnx-wenetspeech-yue-u2pp-conformer-ctc-zh-en-cantonese-int8-2025-09-10/model.int8.onnx";
const char *tokens = "sherpa-onnx-wenetspeech-yue-u2pp-conformer-ctc-zh-en-cantonese-int8-2025-09-10/tokens.txt";
// clang-format on
const char *provider = "cpu";
const SherpaOnnxWave *wave = SherpaOnnxReadWave(wav_filename);
if (wave == NULL) {
fprintf(stderr, "Failed to read %s\n", wav_filename);
return -1;
}
// Zipformer config
SherpaOnnxOfflineWenetCtcModelConfig wenet_ctc_config;
memset(&wenet_ctc_config, 0, sizeof(wenet_ctc_config));
wenet_ctc_config.model = model;
// Offline model config
SherpaOnnxOfflineModelConfig offline_model_config;
memset(&offline_model_config, 0, sizeof(offline_model_config));
offline_model_config.debug = 1;
offline_model_config.num_threads = 1;
offline_model_config.provider = provider;
offline_model_config.tokens = tokens;
offline_model_config.wenet_ctc = wenet_ctc_config;
// Recognizer config
SherpaOnnxOfflineRecognizerConfig recognizer_config;
memset(&recognizer_config, 0, sizeof(recognizer_config));
recognizer_config.decoding_method = "greedy_search";
recognizer_config.model_config = offline_model_config;
const SherpaOnnxOfflineRecognizer *recognizer =
SherpaOnnxCreateOfflineRecognizer(&recognizer_config);
if (recognizer == NULL) {
fprintf(stderr, "Please check your config!\n");
SherpaOnnxFreeWave(wave);
return -1;
}
const SherpaOnnxOfflineStream *stream =
SherpaOnnxCreateOfflineStream(recognizer);
SherpaOnnxAcceptWaveformOffline(stream, wave->sample_rate, wave->samples,
wave->num_samples);
SherpaOnnxDecodeOfflineStream(recognizer, stream);
const SherpaOnnxOfflineRecognizerResult *result =
SherpaOnnxGetOfflineStreamResult(stream);
fprintf(stderr, "Decoded text: %s\n", result->text);
SherpaOnnxDestroyOfflineRecognizerResult(result);
SherpaOnnxDestroyOfflineStream(stream);
SherpaOnnxDestroyOfflineRecognizer(recognizer);
SherpaOnnxFreeWave(wave);
return 0;
}