226 lines
9.6 KiB
C#
226 lines
9.6 KiB
C#
using Microsoft.Extensions.Options;
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using SherpaOnnx;
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using SqlSugar.IOC;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Text.Json;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using VideoAnalysisCore.Common;
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using VideoAnalysisCore.Model;
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using VideoAnalysisCore.Model.Enum;
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using static System.Runtime.InteropServices.JavaScript.JSType;
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namespace VideoAnalysisCore.AICore.SherpaOnnx
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{
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public static class SenseVoice
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{
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const string TransducerStr = "sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20";
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static OfflineRecognizer OR = default!;
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//static VoiceActivityDetector VAD = default!;
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static VadModelConfig VADModelConfig = default!;
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/// <summary>
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/// 初始化 SenseVoice
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/// </summary>
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/// <param name="numThreads">默认6线程</param>
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/// <param name="useGPU">是否使用gpu 报错请看安装CUDA环境<see cref="https://k2-fsa.github.io/sherpa/onnx/pretrained_models/whisper/large-v3.html#run-with-gpu-float32"/></param>
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public static void Init(int numThreads = 6, bool useGPU = false, bool useHotwords = false)
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{
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Console.WriteLine("初始化 SenseVoice");
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OfflineRecognizerConfig config = new OfflineRecognizerConfig();
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//采样率
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config.FeatConfig.SampleRate = 16000;
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//用于训练模型的特征维度
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config.FeatConfig.FeatureDim = 80;
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//Path to tokens.txt
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config.ModelConfig.Tokens = Path.Combine(AppCommon.AIModelFile, "sherpa-onnx-sense-voice-24-07-17", "tokens.txt");
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//SenseVoice 模型
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config.ModelConfig.SenseVoice.Model = Path.Combine(AppCommon.AIModelFile, "sherpa-onnx-sense-voice-24-07-17", "model.onnx");
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//1 使用逆文本规范化处理感官语音。
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config.ModelConfig.SenseVoice.UseInverseTextNormalization = 1;
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config.ModelConfig.SenseVoice.Language = "zh";
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//模型类型
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config.ModelConfig.ModelType = string.Empty;
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config.ModelConfig.NumThreads = numThreads;
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config.ModelConfig.Provider = "cpu";
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//需要使用GPU
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if (!useGPU)
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config.ModelConfig.Provider = "cuda";
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#region 有效的解码方法
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//贪婪搜索[greedy_search] 改进的波束搜索 [modified_beam_search]
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//贪婪搜索
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config.DecodingMethod = "greedy_search";
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////改进的波束搜索
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//config.DecodingMethod = "modified_beam_search";
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////仅在 --decoding--method 为 [波束搜索]modified_beam_search 时使用。
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////它指定搜索过程中要保留的活动路径数
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//config.MaxActivePaths =4;
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#endregion
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#region 热词功能[无效]
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//if (false)
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//{
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// //热词目录
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// config.HotwordsFile = Path.Combine(AppCommon.AIModelFile, "Hotwords.txt");
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// config.DecodingMethod = "modified_beam_search";
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// //热词得分
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// config.HotwordsScore = 1.5f;
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// config.ModelConfig.ModelingUnit = "cjkchar+bpe";
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// config.ModelConfig.BpeVocab = Path.Combine(AppCommon.AIModelFile, "sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20", "bpe.model");
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// config.ModelConfig.Transducer = new OfflineTransducerModelConfig()
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// {
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// Decoder = Path.Combine(AppCommon.AIModelFile, "sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20", "decoder-epoch-99-avg-1.onnx"),
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// Encoder = Path.Combine(AppCommon.AIModelFile, "sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20", "encoder-epoch-99-avg-1.onnx"),
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// Joiner = Path.Combine(AppCommon.AIModelFile, "sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20", "joiner-epoch-99-avg-1.onnx"),
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// };
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//}
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#endregion
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//反转文本规范化规则 fst 的路径
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config.RuleFsts = Path.Combine(AppCommon.AIModelFile, "itn_subject_sx.fst");
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#if DEBUG
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config.ModelConfig.Debug = 1;
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#endif
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OR = new OfflineRecognizer(config);
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VADModelConfig = new VadModelConfig();
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VADModelConfig.SileroVad.Model = Path.Combine(AppCommon.AIModelFile, "sherpa-onnx-sense-voice-24-07-17", "silero_vad.onnx");
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VADModelConfig.Debug = 0;
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}
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/// <summary>
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/// 获取语音字幕
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static async Task<List<SenseVoiceRes>> RunTask(Stream s)
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{
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if (s is null)
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throw new Exception("音频路径 is null");
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return await TaskHandle(new WaveReader(s));
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}
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/// <summary>
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/// 获取语音字幕
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/// </summary>
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/// <param name="task"></param>
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/// <returns></returns>
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public static async Task RunTask(string task)
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{
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var filePath = Path.Combine(task.LocalPath(), "task.wav");
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if (string.IsNullOrEmpty(filePath) || !File.Exists(filePath))
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throw new Exception("task 音频路径未找到");
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await TaskHandle(new WaveReader(filePath), task);
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}
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/// <summary>
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/// 任务处理
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/// </summary>
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/// <param name="reader">Wave</param>
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/// <param name="task">任务id [默认Null]</param>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public static async Task<List<SenseVoiceRes>> TaskHandle(WaveReader reader, string? task = null)
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{
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if (OR is null)
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Init();
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int numSamples = reader.Samples.Length;
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int windowSize = VADModelConfig.SileroVad.WindowSize;
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int sampleRate = VADModelConfig.SampleRate;
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int numIter = numSamples / windowSize;
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var totalSecond = numSamples / (float)sampleRate;
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var res = new List<SenseVoiceRes>(500);
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using var VAD = new VoiceActivityDetector(VADModelConfig, 30);
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for (int i = 0; i != numIter; ++i)
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{
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int start = i * windowSize;
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float[] samples = new float[windowSize];
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Array.Copy(reader.Samples, start, samples, 0, windowSize);
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VAD.AcceptWaveform(samples);
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//Memory<float> samples = new float[windowSize];
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//Memory<float> sourceSpan = reader.Samples.AsMemory(start, windowSize);
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//sourceSpan.CopyTo(samples);
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//VAD.AcceptWaveform(samples.ToArray());
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//是否检测到语音
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if (VAD.IsSpeechDetected())
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{
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//获取最新的发言片段
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while (!VAD.IsEmpty())
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await VAD.ReadNext(res, totalSecond, task);
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}
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}
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VAD.Flush();
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while (!VAD.IsEmpty())
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await VAD.ReadNext(res, totalSecond, task);
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//如果携带任务ID
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if (!string.IsNullOrEmpty(task))
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{
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Console.WriteLine(DateTime.Now + "=> SenseVoice 字幕数量" + res.Count);
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var captionsStr = res.ToJson();
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await DbScoped.Sugar
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.Updateable<VideoTask>()
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.SetColumns(it => it.Captions == captionsStr)
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.Where(it => it.Id == long.Parse(task))
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.ExecuteCommandAsync();
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await RedisExpand.Redis.HMSetAsync(RedisExpandKey.Task(task), "Captions", res);
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//分析完成视频字幕后继续接收任务
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RedisExpand.NewTaskAsync();
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}
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return res;
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}
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/// <summary>
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/// 处理vad 下一个切片
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/// </summary>
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/// <param name="VAD"></param>
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/// <param name="res">字幕处理后写入数组</param>
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/// <param name="totalSecond">总时长</param>
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/// <param name="task">所属任务id</param>
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/// <returns></returns>
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public static async Task ReadNext(this VoiceActivityDetector VAD, List<SenseVoiceRes> res, float totalSecond, string? task = null)
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{
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var segment = VAD.Front();
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var sampleRate = VADModelConfig.SampleRate;
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var sampleRateF = (float)VADModelConfig.SampleRate;
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float startTime = segment.Start / sampleRateF;
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float duration = segment.Samples.Length / sampleRateF;
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using var stream = OR.CreateStream();
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stream.AcceptWaveform(sampleRate, segment.Samples);
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OR.Decode(stream);
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if (!string.IsNullOrEmpty(stream.Result.Text))
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{
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var text = stream.Result.Text.Trim();
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if (text.Length == 1 && text == "。")// 检查字符是否只有一个句号
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{
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VAD.Pop();
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return;
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}
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res.Add(new()
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{
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Text = stream.Result.Text,
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Start = (float)Math.Round(startTime, 2, MidpointRounding.AwayFromZero),
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End = (float)Math.Round(startTime + duration, 2, MidpointRounding.AwayFromZero),
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});
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if (!string.IsNullOrEmpty(task))
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RedisExpand.SetTaskProgress(task, Math.Round((double)(startTime + duration) / (totalSecond) * 100,2)+"%");
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}
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VAD.Pop();
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}
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}
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}
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