Add Go API for speaker identification (#718)

go-api-examples/speaker-identification/go.mod

@@ -0,0 +1,3 @@
+module speaker-identification
+
+go 1.12

go-api-examples/speaker-identification/main.go

@@ -0,0 +1,146 @@
+package main
+
+import (
+	sherpa "github.com/k2-fsa/sherpa-onnx-go/sherpa_onnx"
+	"log"
+)
+
+func createSpeakerEmbeddingExtractor() *sherpa.SpeakerEmbeddingExtractor {
+	config := sherpa.SpeakerEmbeddingExtractorConfig{}
+
+	// Please download the model from
+	// https://github.com/k2-fsa/sherpa-onnx/releases/download/speaker-recongition-models/3dspeaker_speech_campplus_sv_zh-cn_16k-common.onnx
+	//
+	// You can find more models at
+	// https://github.com/k2-fsa/sherpa-onnx/releases/tag/speaker-recongition-models
+
+	config.Model = "./3dspeaker_speech_campplus_sv_zh-cn_16k-common.onnx"
+	config.NumThreads = 1
+	config.Debug = 1
+	config.Provider = "cpu"
+
+	ex := sherpa.NewSpeakerEmbeddingExtractor(&config)
+	return ex
+}
+
+func computeEmbeddings(ex *sherpa.SpeakerEmbeddingExtractor, files []string) [][]float32 {
+	embeddings := make([][]float32, len(files))
+
+	for i, f := range files {
+		wave := sherpa.ReadWave(f)
+
+		stream := ex.CreateStream()
+		defer sherpa.DeleteOnlineStream(stream)
+		stream.AcceptWaveform(wave.SampleRate, wave.Samples)
+		stream.InputFinished()
+		embeddings[i] = ex.Compute(stream)
+	}
+
+	return embeddings
+
+}
+
+func registerSpeakers(ex *sherpa.SpeakerEmbeddingExtractor, manager *sherpa.SpeakerEmbeddingManager) {
+	// Please download the test data from
+	// https://github.com/csukuangfj/sr-data
+	spk1_files := []string{
+		"./sr-data/enroll/fangjun-sr-1.wav",
+		"./sr-data/enroll/fangjun-sr-2.wav",
+		"./sr-data/enroll/fangjun-sr-3.wav",
+	}
+
+	spk2_files := []string{
+		"./sr-data/enroll/leijun-sr-1.wav",
+		"./sr-data/enroll/leijun-sr-2.wav",
+	}
+
+	spk1_embeddings := computeEmbeddings(ex, spk1_files)
+	spk2_embeddings := computeEmbeddings(ex, spk2_files)
+
+	ok := manager.RegisterV("fangjun", spk1_embeddings)
+	if !ok {
+		panic("Failed to register fangjun")
+	}
+
+	ok = manager.RegisterV("leijun", spk2_embeddings)
+	if !ok {
+		panic("Failed to register leijun")
+	}
+
+	if !manager.Contains("fangjun") {
+		panic("Failed to find fangjun")
+	}
+
+	if !manager.Contains("leijun") {
+		panic("Failed to find leijun")
+	}
+
+	if manager.NumSpeakers() != 2 {
+		panic("There should be only 2 speakers")
+	}
+
+	all_speakers := manager.AllSpeakers()
+	log.Printf("All speakers: %v\n", all_speakers)
+}
+
+func main() {
+	log.SetFlags(log.LstdFlags | log.Lmicroseconds)
+
+	ex := createSpeakerEmbeddingExtractor()
+	defer sherpa.DeleteSpeakerEmbeddingExtractor(ex)
+
+	manager := sherpa.NewSpeakerEmbeddingManager(ex.Dim())
+	defer sherpa.DeleteSpeakerEmbeddingManager(manager)
+	registerSpeakers(ex, manager)
+
+	// Please download the test data from
+	// https://github.com/csukuangfj/sr-data
+	test1 := "./sr-data/test/fangjun-test-sr-1.wav"
+	embeddings := computeEmbeddings(ex, []string{test1})[0]
+	threshold := float32(0.6)
+	name := manager.Search(embeddings, threshold)
+	if len(name) > 0 {
+		log.Printf("%v matches %v", test1, name)
+	} else {
+		log.Printf("No matches found for %v", test1)
+	}
+
+	test2 := "./sr-data/test/leijun-test-sr-1.wav"
+	embeddings = computeEmbeddings(ex, []string{test2})[0]
+	name = manager.Search(embeddings, threshold)
+	if len(name) > 0 {
+		log.Printf("%v matches %v", test2, name)
+	} else {
+		log.Printf("No matches found for %v", test2)
+	}
+
+	test3 := "./sr-data/test/liudehua-test-sr-1.wav"
+	embeddings = computeEmbeddings(ex, []string{test3})[0]
+	name = manager.Search(embeddings, threshold)
+	if len(name) > 0 {
+		log.Printf("%v matches %v", test3, name)
+	} else {
+		log.Printf("No matches found for %v", test3)
+	}
+
+	if !manager.Remove("fangjun") {
+		panic("Failed to deregister fangjun")
+	} else {
+		log.Print("fangjun deregistered\n")
+	}
+
+	test1 = "./sr-data/test/fangjun-test-sr-1.wav"
+	embeddings = computeEmbeddings(ex, []string{test1})[0]
+	name = manager.Search(embeddings, threshold)
+	if len(name) > 0 {
+		log.Printf("%v matches %v", test1, name)
+	} else {
+		log.Printf("No matches found for %v", test1)
+	}
+}
+
+func chk(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

go-api-examples/speaker-identification/run.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+if [ ! -f ./3dspeaker_speech_campplus_sv_zh-cn_16k-common.onnx ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/speaker-recongition-models/3dspeaker_speech_campplus_sv_zh-cn_16k-common.onnx
+fi
+
+if [ ! -f ./sr-data/enroll/fangjun-sr-1.wav ]; then
+  git clone https://github.com/csukuangfj/sr-data
+fi
+
+go mod tidy
+go build
+./speaker-identification