offline-zipformer-audio-tagging-model.cc
3.5 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
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
// sherpa-onnx/csrc/offline-zipformer-audio-tagging-model.cc
//
// Copyright (c) 2024 Xiaomi Corporation
#include "sherpa-onnx/csrc/offline-zipformer-audio-tagging-model.h"
#include <string>
#include <vector>
#include "sherpa-onnx/csrc/onnx-utils.h"
#include "sherpa-onnx/csrc/session.h"
#include "sherpa-onnx/csrc/text-utils.h"
namespace sherpa_onnx {
class OfflineZipformerAudioTaggingModel::Impl {
public:
explicit Impl(const AudioTaggingModelConfig &config)
: config_(config),
env_(ORT_LOGGING_LEVEL_ERROR),
sess_opts_(GetSessionOptions(config)),
allocator_{} {
auto buf = ReadFile(config_.zipformer.model);
Init(buf.data(), buf.size());
}
#if __ANDROID_API__ >= 9
Impl(AAssetManager *mgr, const AudioTaggingModelConfig &config)
: config_(config),
env_(ORT_LOGGING_LEVEL_ERROR),
sess_opts_(GetSessionOptions(config)),
allocator_{} {
auto buf = ReadFile(mgr, config_.zipformer.model);
Init(buf.data(), buf.size());
}
#endif
Ort::Value Forward(Ort::Value features, Ort::Value features_length) {
std::array<Ort::Value, 2> inputs = {std::move(features),
std::move(features_length)};
auto ans =
sess_->Run({}, input_names_ptr_.data(), inputs.data(), inputs.size(),
output_names_ptr_.data(), output_names_ptr_.size());
return std::move(ans[0]);
}
int32_t NumEventClasses() const { return num_event_classes_; }
OrtAllocator *Allocator() const { return allocator_; }
private:
void Init(void *model_data, size_t model_data_length) {
sess_ = std::make_unique<Ort::Session>(env_, model_data, model_data_length,
sess_opts_);
GetInputNames(sess_.get(), &input_names_, &input_names_ptr_);
GetOutputNames(sess_.get(), &output_names_, &output_names_ptr_);
// get meta data
Ort::ModelMetadata meta_data = sess_->GetModelMetadata();
if (config_.debug) {
std::ostringstream os;
PrintModelMetadata(os, meta_data);
SHERPA_ONNX_LOGE("%s\n", os.str().c_str());
}
// get num_event_classes from the output[0].shape,
// which is (N, num_event_classes)
num_event_classes_ =
sess_->GetOutputTypeInfo(0).GetTensorTypeAndShapeInfo().GetShape()[1];
}
private:
AudioTaggingModelConfig config_;
Ort::Env env_;
Ort::SessionOptions sess_opts_;
Ort::AllocatorWithDefaultOptions allocator_;
std::unique_ptr<Ort::Session> sess_;
std::vector<std::string> input_names_;
std::vector<const char *> input_names_ptr_;
std::vector<std::string> output_names_;
std::vector<const char *> output_names_ptr_;
int32_t num_event_classes_ = 0;
};
OfflineZipformerAudioTaggingModel::OfflineZipformerAudioTaggingModel(
const AudioTaggingModelConfig &config)
: impl_(std::make_unique<Impl>(config)) {}
#if __ANDROID_API__ >= 9
OfflineZipformerAudioTaggingModel::OfflineZipformerAudioTaggingModel(
AAssetManager *mgr, const AudioTaggingModelConfig &config)
: impl_(std::make_unique<Impl>(mgr, config)) {}
#endif
OfflineZipformerAudioTaggingModel::~OfflineZipformerAudioTaggingModel() =
default;
Ort::Value OfflineZipformerAudioTaggingModel::Forward(
Ort::Value features, Ort::Value features_length) const {
return impl_->Forward(std::move(features), std::move(features_length));
}
int32_t OfflineZipformerAudioTaggingModel::NumEventClasses() const {
return impl_->NumEventClasses();
}
OrtAllocator *OfflineZipformerAudioTaggingModel::Allocator() const {
return impl_->Allocator();
}
} // namespace sherpa_onnx