offline-speaker-diarization.h
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// sherpa-onnx/csrc/offline-speaker-diarization.h
//
// Copyright (c) 2024 Xiaomi Corporation
#ifndef SHERPA_ONNX_CSRC_OFFLINE_SPEAKER_DIARIZATION_H_
#define SHERPA_ONNX_CSRC_OFFLINE_SPEAKER_DIARIZATION_H_
#include <functional>
#include <memory>
#include <string>
#if __ANDROID_API__ >= 9
#include "android/asset_manager.h"
#include "android/asset_manager_jni.h"
#endif
#include "sherpa-onnx/csrc/fast-clustering-config.h"
#include "sherpa-onnx/csrc/offline-speaker-diarization-result.h"
#include "sherpa-onnx/csrc/offline-speaker-segmentation-model-config.h"
#include "sherpa-onnx/csrc/speaker-embedding-extractor.h"
namespace sherpa_onnx {
struct OfflineSpeakerDiarizationConfig {
OfflineSpeakerSegmentationModelConfig segmentation;
SpeakerEmbeddingExtractorConfig embedding;
FastClusteringConfig clustering;
// if a segment is less than this value, then it is discarded
float min_duration_on = 0.3; // in seconds
// if the gap between to segments of the same speaker is less than this value,
// then these two segments are merged into a single segment.
// We do this recursively.
float min_duration_off = 0.5; // in seconds
OfflineSpeakerDiarizationConfig() = default;
OfflineSpeakerDiarizationConfig(
const OfflineSpeakerSegmentationModelConfig &segmentation,
const SpeakerEmbeddingExtractorConfig &embedding,
const FastClusteringConfig &clustering, float min_duration_on,
float min_duration_off)
: segmentation(segmentation),
embedding(embedding),
clustering(clustering),
min_duration_on(min_duration_on),
min_duration_off(min_duration_off) {}
void Register(ParseOptions *po);
bool Validate() const;
std::string ToString() const;
};
class OfflineSpeakerDiarizationImpl;
using OfflineSpeakerDiarizationProgressCallback = std::function<int32_t(
int32_t processed_chunks, int32_t num_chunks, void *arg)>;
class OfflineSpeakerDiarization {
public:
explicit OfflineSpeakerDiarization(
const OfflineSpeakerDiarizationConfig &config);
#if __ANDROID_API__ >= 9
OfflineSpeakerDiarization(AAssetManager *mgr,
const OfflineSpeakerDiarizationConfig &config);
#endif
~OfflineSpeakerDiarization();
// Expected sample rate of the input audio samples
int32_t SampleRate() const;
// Note: Only config.clustering is used. All other fields in config are
// ignored
void SetConfig(const OfflineSpeakerDiarizationConfig &config);
OfflineSpeakerDiarizationResult Process(
const float *audio, int32_t n,
OfflineSpeakerDiarizationProgressCallback callback = nullptr,
void *callback_arg = nullptr) const;
private:
std::unique_ptr<OfflineSpeakerDiarizationImpl> impl_;
};
} // namespace sherpa_onnx
#endif // SHERPA_ONNX_CSRC_OFFLINE_SPEAKER_DIARIZATION_H_