Add Go API for audio tagging (#1840)

go-api-examples/audio-tagging/go.mod

@@ -0,0 +1,4 @@
+module audio-tagging
+
+go 1.12
+

go-api-examples/audio-tagging/main.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+	sherpa "github.com/k2-fsa/sherpa-onnx-go/sherpa_onnx"
+	"log"
+)
+
+func main() {
+	config := sherpa.AudioTaggingConfig{}
+	config.Model.Zipformer.Model = "./sherpa-onnx-zipformer-small-audio-tagging-2024-04-15/model.int8.onnx"
+	config.Model.NumThreads = 1
+	config.Model.Debug = 1
+	config.Model.Provider = "cpu"
+	config.Labels = "./sherpa-onnx-zipformer-small-audio-tagging-2024-04-15/class_labels_indices.csv"
+	config.TopK = 5
+
+	tagging := sherpa.NewAudioTagging(&config)
+	defer sherpa.DeleteAudioTagging(tagging)
+
+	wave_filename := "./sherpa-onnx-zipformer-small-audio-tagging-2024-04-15/test_wavs/3.wav"
+
+	wave := sherpa.ReadWave(wave_filename)
+	if wave == nil {
+		log.Printf("Failed to read %v\n", wave_filename)
+		return
+	}
+
+	stream := sherpa.NewAudioTaggingStream(tagging)
+	defer sherpa.DeleteOfflineStream(stream)
+
+	stream.AcceptWaveform(wave.SampleRate, wave.Samples)
+
+	result := tagging.Compute(stream, 10)
+	fmt.Printf("the tagging result: %v\n", result)
+}

go-api-examples/audio-tagging/run.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+if [ ! -f ./sherpa-onnx-zipformer-small-audio-tagging-2024-04-15/model.int8.onnx ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/audio-tagging-models/sherpa-onnx-zipformer-small-audio-tagging-2024-04-15.tar.bz2
+
+  tar xvf sherpa-onnx-zipformer-small-audio-tagging-2024-04-15.tar.bz2
+  rm sherpa-onnx-zipformer-small-audio-tagging-2024-04-15.tar.bz2
+fi
+
+go mod tidy
+go build
+
+./audio-tagging