GetSpeechToText.cs
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using System.Management.Automation;
using NAudio.Wave; using Whisper.net; using Whisper.net.Ggml; using System.Management; using System.Collections.Concurrent; namespace GenXdev.Helpers { [Cmdlet(VerbsCommon.Get, "SpeechToText")] public class GetSpeechToText : PSCmdlet { #region Cmdlet Parameters [Parameter(Mandatory = false, HelpMessage = "Path to the model file")] public string ModelFileDirectoryPath { get; set; } [Alias("WaveFile")] [Parameter(Mandatory = true, Position = 0, ValueFromPipeline = true, HelpMessage = "Audio file path, FileInfo object, or any audio format supported by Whisper.")] public object Input { get; set; } [Parameter(Mandatory = false, HelpMessage = "Returns objects instead of strings")] public SwitchParameter Passthru { get; set; } [Parameter(Mandatory = false, HelpMessage = "Whether to include token timestamps")] public SwitchParameter WithTokenTimestamps { get; set; } [Parameter(Mandatory = false, HelpMessage = "Sum threshold for token timestamps, defaults to 0.5")] public float TokenTimestampsSumThreshold { get; set; } = 0.5f; [Parameter(Mandatory = false, HelpMessage = "Whether to split on word boundaries")] public SwitchParameter SplitOnWord { get; set; } [Parameter(Mandatory = false, HelpMessage = "Maximum number of tokens per segment")] public int? MaxTokensPerSegment { get; set; } [Parameter(Mandatory = false, HelpMessage = "Sets the input language to detect, defaults to 'en'")] public string LanguageIn { get; set; } = "en"; [Parameter(Mandatory = false, HelpMessage = "Sets the output language")] public int CpuThreads { get; set; } = 0; [Parameter(Mandatory = false, HelpMessage = "Temperature for speech detection")] [ValidateRange(0, 1)] public float? Temperature { get; set; } [Parameter(Mandatory = false, HelpMessage = "Temperature increment")] [ValidateRange(0, 1)] public float? TemperatureInc { get; set; } [Parameter(Mandatory = false, HelpMessage = "Whether to translate the output")] public SwitchParameter WithTranslate { get; set; } [Parameter(Mandatory = false, HelpMessage = "Prompt to use for the model")] public string Prompt { get; set; } [Parameter(Mandatory = false, HelpMessage = "Regex to suppress tokens from the output")] public string SuppressRegex { get; set; } = null; [Parameter(Mandatory = false, HelpMessage = "Whether to show progress")] public SwitchParameter WithProgress { get; set; } [Parameter(Mandatory = false, HelpMessage = "Size of the audio context")] public int? AudioContextSize { get; set; } [Parameter(Mandatory = false, HelpMessage = "Whether to NOT suppress blank lines")] public SwitchParameter DontSuppressBlank { get; set; } [Parameter(Mandatory = false, HelpMessage = "Maximum duration of the audio")] public TimeSpan? MaxDuration { get; set; } [Parameter(Mandatory = false, HelpMessage = "Offset for the audio")] public TimeSpan? Offset { get; set; } [Parameter(Mandatory = false, HelpMessage = "Maximum number of last text tokens")] public int? MaxLastTextTokens { get; set; } [Parameter(Mandatory = false, HelpMessage = "Whether to use single segment only")] public SwitchParameter SingleSegmentOnly { get; set; } [Parameter(Mandatory = false, HelpMessage = "Whether to print special tokens")] public SwitchParameter PrintSpecialTokens { get; set; } [Parameter(Mandatory = false, HelpMessage = "Maximum segment length")] public int? MaxSegmentLength { get; set; } [Parameter(Mandatory = false, HelpMessage = "Start timestamps at this moment")] public TimeSpan? MaxInitialTimestamp { get; set; } [Parameter(Mandatory = false, HelpMessage = "Length penalty")] [ValidateRange(0, 1)] public float? LengthPenalty { get; set; } [Parameter(Mandatory = false, HelpMessage = "Entropy threshold")] [ValidateRange(0, 1)] public float? EntropyThreshold { get; set; } [Parameter(Mandatory = false, HelpMessage = "Log probability threshold")] [ValidateRange(0, 1)] public float? LogProbThreshold { get; set; } [Parameter(Mandatory = false, HelpMessage = "No speech threshold")] [ValidateRange(0, 1)] public float? NoSpeechThreshold { get; set; } [Parameter(Mandatory = false, HelpMessage = "Don't use context")] public SwitchParameter NoContext { get; set; } [Parameter(Mandatory = false, HelpMessage = "Use beam search sampling strategy")] public SwitchParameter WithBeamSearchSamplingStrategy { get; set; } [Parameter(Mandatory = false, HelpMessage = "Whisper model type to use, defaults to LargeV3Turbo")] public GgmlType ModelType { get; set; } = GgmlType.LargeV3Turbo; #endregion private readonly ConcurrentQueue<SegmentData> _results = new(); private readonly ConcurrentQueue<ErrorRecord> _errorQueue = new(); private readonly ConcurrentQueue<string> _verboseQueue = new(); private CancellationTokenSource _cts; private WhisperProcessor _processor; private WhisperFactory _whisperFactory; // Keep reference for proper disposal private bool _isDisposed = false; private readonly object _disposeLock = new object(); protected override void BeginProcessing() { base.BeginProcessing(); if (string.IsNullOrEmpty(ModelFileDirectoryPath) || !Directory.Exists(ModelFileDirectoryPath)) { // With this: var localAppData = System.Environment.GetEnvironmentVariable("LOCALAPPDATA"); if (!string.IsNullOrEmpty(localAppData)) { ModelFileDirectoryPath = Path.Combine(localAppData, "GenXdev.PowerShell"); } if (!Directory.Exists(ModelFileDirectoryPath)) { try { Directory.CreateDirectory(ModelFileDirectoryPath); } catch (Exception ex) { ThrowTerminatingError(new ErrorRecord(ex, "ModelPathCreationFailed", ErrorCategory.ResourceUnavailable, ModelFileDirectoryPath)); } } } if (!MyInvocation.BoundParameters.ContainsKey("LanguageIn")) { LanguageIn = "auto"; } // Only log parameters that were actually set by the user WriteVerbose($"ModelFileDirectoryPath: {ModelFileDirectoryPath}"); if (MyInvocation.BoundParameters.ContainsKey("Input")) WriteVerbose($"Input: {Input}"); if (MyInvocation.BoundParameters.ContainsKey("Passthru")) WriteVerbose($"Passthru: {Passthru}"); if (MyInvocation.BoundParameters.ContainsKey("WithTokenTimestamps")) WriteVerbose($"WithTokenTimestamps: {WithTokenTimestamps}"); if (MyInvocation.BoundParameters.ContainsKey("TokenTimestampsSumThreshold")) WriteVerbose($"TokenTimestampsSumThreshold: {TokenTimestampsSumThreshold}"); if (MyInvocation.BoundParameters.ContainsKey("SplitOnWord")) WriteVerbose($"SplitOnWord: {SplitOnWord}"); if (MyInvocation.BoundParameters.ContainsKey("MaxTokensPerSegment")) WriteVerbose($"MaxTokensPerSegment: {MaxTokensPerSegment}"); if (MyInvocation.BoundParameters.ContainsKey("LanguageIn")) WriteVerbose($"LanguageIn: {LanguageIn}"); if (MyInvocation.BoundParameters.ContainsKey("CpuThreads")) WriteVerbose($"CpuThreads: {CpuThreads}"); if (MyInvocation.BoundParameters.ContainsKey("Temperature")) WriteVerbose($"Temperature: {Temperature}"); if (MyInvocation.BoundParameters.ContainsKey("TemperatureInc")) WriteVerbose($"TemperatureInc: {TemperatureInc}"); if (MyInvocation.BoundParameters.ContainsKey("WithTranslate")) WriteVerbose($"WithTranslate: {WithTranslate}"); if (MyInvocation.BoundParameters.ContainsKey("Prompt")) WriteVerbose($"Prompt: {Prompt}"); if (MyInvocation.BoundParameters.ContainsKey("SuppressRegex")) WriteVerbose($"SuppressRegex: {SuppressRegex}"); if (MyInvocation.BoundParameters.ContainsKey("WithProgress")) WriteVerbose($"WithProgress: {WithProgress}"); if (MyInvocation.BoundParameters.ContainsKey("AudioContextSize")) WriteVerbose($"AudioContextSize: {AudioContextSize}"); if (MyInvocation.BoundParameters.ContainsKey("DontSuppressBlank")) WriteVerbose($"DontSuppressBlank: {DontSuppressBlank}"); if (MyInvocation.BoundParameters.ContainsKey("MaxDuration")) WriteVerbose($"MaxDuration: {MaxDuration}"); if (MyInvocation.BoundParameters.ContainsKey("Offset")) WriteVerbose($"Offset: {Offset}"); if (MyInvocation.BoundParameters.ContainsKey("MaxLastTextTokens")) WriteVerbose($"MaxLastTextTokens: {MaxLastTextTokens}"); if (MyInvocation.BoundParameters.ContainsKey("SingleSegmentOnly")) WriteVerbose($"SingleSegmentOnly: {SingleSegmentOnly}"); if (MyInvocation.BoundParameters.ContainsKey("PrintSpecialTokens")) WriteVerbose($"PrintSpecialTokens: {PrintSpecialTokens}"); if (MyInvocation.BoundParameters.ContainsKey("MaxSegmentLength")) WriteVerbose($"MaxSegmentLength: {MaxSegmentLength}"); if (MyInvocation.BoundParameters.ContainsKey("MaxInitialTimestamp")) WriteVerbose($"MaxInitialTimestamp: {MaxInitialTimestamp}"); if (MyInvocation.BoundParameters.ContainsKey("LengthPenalty")) WriteVerbose($"LengthPenalty: {LengthPenalty}"); if (MyInvocation.BoundParameters.ContainsKey("EntropyThreshold")) WriteVerbose($"EntropyThreshold: {EntropyThreshold}"); if (MyInvocation.BoundParameters.ContainsKey("LogProbThreshold")) WriteVerbose($"LogProbThreshold: {LogProbThreshold}"); if (MyInvocation.BoundParameters.ContainsKey("NoSpeechThreshold")) WriteVerbose($"NoSpeechThreshold: {NoSpeechThreshold}"); if (MyInvocation.BoundParameters.ContainsKey("NoContext")) WriteVerbose($"NoContext: {NoContext}"); if (MyInvocation.BoundParameters.ContainsKey("WithBeamSearchSamplingStrategy")) WriteVerbose($"WithBeamSearchSamplingStrategy: {WithBeamSearchSamplingStrategy}"); if (MyInvocation.BoundParameters.ContainsKey("ModelType")) WriteVerbose($"ModelType: {ModelType}"); _cts = new CancellationTokenSource(); // Initialize Whisper processor once var ggmlType = ModelType; var modelFileName = Path.GetFullPath(Path.Combine(ModelFileDirectoryPath, GetModelFileName(ModelType))); if (!File.Exists(modelFileName)) { DownloadModel(modelFileName, ggmlType).GetAwaiter().GetResult(); } _whisperFactory = WhisperFactory.FromPath(modelFileName); var builder = ConfigureWhisperBuilder(_whisperFactory.CreateBuilder()); _processor = builder.Build(); } protected override void ProcessRecord() { base.ProcessRecord(); // Get file path from input string filePath = GetFilePathFromInput(Input); if (string.IsNullOrEmpty(filePath)) { WriteError(new ErrorRecord( new ArgumentException("Input parameter is required and must be a valid file path or FileInfo object."), "MissingInput", ErrorCategory.InvalidArgument, Input)); return; } // Validate input file exists if (!File.Exists(filePath)) { WriteError(new ErrorRecord( new FileNotFoundException($"Audio file not found: {filePath}"), "FileNotFound", ErrorCategory.ObjectNotFound, filePath)); return; } WriteVerbose($"Processing audio file: {filePath}"); // Process the audio file using the already-initialized processor ProcessAudioFile(filePath); } private string GetFilePathFromInput(object input) { if (input == null) return null; // Handle FileInfo objects if (input is FileInfo fileInfo) { return fileInfo.FullName; } // Handle string paths if (input is string stringPath) { return stringPath; } // Handle PSObject wrapper around FileInfo if (input is PSObject psObject) { var baseObject = psObject.BaseObject; if (baseObject is FileInfo fi) { return fi.FullName; } if (baseObject is string str) { return str; } } // Try to convert to string as fallback try { return input.ToString(); } catch { return null; } } private void ProcessAudioFile(string filePath) { using var audioStream = File.OpenRead(filePath); var processingTask = Task.Run(async () => { try { await foreach (var segment in _processor.ProcessAsync(audioStream, _cts.Token)) { if (_cts.IsCancellationRequested || _isDisposed) break; if (!string.IsNullOrWhiteSpace(segment.Text)) { if (!(segment.Text.Trim("\r\n\t ".ToCharArray()) == "[BLANK_AUDIO]")) { _results.Enqueue(segment); } } } } catch (OperationCanceledException) { // Expected when cancellation is requested } catch (Exception ex) { _errorQueue.Enqueue(new ErrorRecord(ex, "ProcessingError", ErrorCategory.OperationStopped, null)); } }); Console.WriteLine("Processing audio file. Press Q to abort..."); // Main processing loop with improved error handling while (!processingTask.IsCompleted) { try { // Output results as they come in while (_results.TryDequeue(out var segment)) { WriteObject(Passthru ? segment : segment.Text.Trim()); } // Check for Q key to abort if (Console.KeyAvailable && Console.ReadKey(true).Key == ConsoleKey.Q) { _cts.Cancel(); _errorQueue.Enqueue(new ErrorRecord(new Exception("Processing aborted"), "ProcessingAborted", ErrorCategory.OperationStopped, null)); break; } Thread.Sleep(100); } catch (Exception ex) { WriteError(new ErrorRecord(ex, "ProcessingLoopError", ErrorCategory.OperationStopped, null)); break; } } // Wait for processing to complete with proper timeout and error handling bool taskCompleted = false; try { // First try to wait gracefully taskCompleted = processingTask.Wait(TimeSpan.FromSeconds(10)); if (!taskCompleted) { // If task doesn't complete, cancel and wait a bit more _cts.Cancel(); taskCompleted = processingTask.Wait(TimeSpan.FromSeconds(5)); } } catch (AggregateException ex) { // Handle task exceptions foreach (var innerEx in ex.InnerExceptions) { if (!(innerEx is OperationCanceledException)) { WriteVerbose($"Processing task error: {innerEx.Message}"); } } } catch (Exception ex) { WriteVerbose($"Error waiting for processing task: {ex.Message}"); } // Process any remaining results regardless of task completion int timeout = 0; while (timeout < 50) // Max 5 seconds { bool hasResults = false; // Process all queued messages in the main thread during cleanup while (_errorQueue.TryDequeue(out var errorRecord)) { WriteError(errorRecord); hasResults = true; } while (_verboseQueue.TryDequeue(out var verboseMessage)) { WriteVerbose(verboseMessage); hasResults = true; } while (_results.TryDequeue(out var segment)) { WriteObject(Passthru ? segment : segment.Text.Trim()); hasResults = true; } if (!hasResults && taskCompleted) { break; // No more results and task is done } Thread.Sleep(100); timeout++; } } private WhisperProcessorBuilder ConfigureWhisperBuilder(WhisperProcessorBuilder builder) { int physicalCoreCount = 0; var searcher = new ManagementObjectSearcher("select NumberOfCores from Win32_Processor"); foreach (var item in searcher.Get()) { physicalCoreCount += Convert.ToInt32(item["NumberOfCores"]); } builder.WithLanguage(LanguageIn) .WithThreads(CpuThreads > 0 ? CpuThreads : physicalCoreCount); // Check for LanguageIn to enable WithTranslate if (MyInvocation.BoundParameters.ContainsKey("LanguageIn")) { builder.WithTranslate(); } // Improved speech detection settings if (Temperature.HasValue) { builder.WithTemperature(Temperature.Value); } else { builder.WithTemperature(0.0f); // Lower temperature for more consistent results } if (TemperatureInc.HasValue) builder.WithTemperatureInc(TemperatureInc.Value); if (WithTokenTimestamps.IsPresent) builder.WithTokenTimestamps().WithTokenTimestampsSumThreshold(TokenTimestampsSumThreshold); if (WithTranslate.IsPresent) builder.WithTranslate(); if (!string.IsNullOrWhiteSpace(Prompt)) builder.WithPrompt(Prompt); if (!string.IsNullOrWhiteSpace(SuppressRegex)) builder.WithSuppressRegex(SuppressRegex); if (WithProgress.IsPresent) { builder.WithProgressHandler(progress => WriteProgress(new ProgressRecord(1, "Processing", $"Progress: {progress}%") { PercentComplete = progress })); } if (SplitOnWord.IsPresent) builder.SplitOnWord(); if (MaxTokensPerSegment.HasValue) builder.WithMaxTokensPerSegment(MaxTokensPerSegment.Value); // Improved silence/speech detection if (NoSpeechThreshold.HasValue) { builder.WithNoSpeechThreshold(NoSpeechThreshold.Value); } else { builder.WithNoSpeechThreshold(0.6f); // Default Whisper threshold } if (AudioContextSize.HasValue) builder.WithAudioContextSize(AudioContextSize.Value); if (DontSuppressBlank.IsPresent) builder.WithoutSuppressBlank(); if (MaxDuration.HasValue) builder.WithDuration(MaxDuration.Value); if (Offset.HasValue) builder.WithOffset(Offset.Value); if (MaxLastTextTokens.HasValue) builder.WithMaxLastTextTokens(MaxLastTextTokens.Value); if (SingleSegmentOnly.IsPresent) builder.WithSingleSegment(); if (PrintSpecialTokens.IsPresent) builder.WithPrintSpecialTokens(); if (MaxSegmentLength.HasValue) builder.WithMaxSegmentLength(MaxSegmentLength.Value); if (MaxInitialTimestamp.HasValue) builder.WithMaxInitialTs((int)MaxInitialTimestamp.Value.TotalSeconds); if (LengthPenalty.HasValue) builder.WithLengthPenalty(LengthPenalty.Value); if (EntropyThreshold.HasValue) builder.WithEntropyThreshold(EntropyThreshold.Value); if (LogProbThreshold.HasValue) builder.WithLogProbThreshold(LogProbThreshold.Value); if (NoContext.IsPresent) builder.WithNoContext(); if (WithBeamSearchSamplingStrategy.IsPresent) builder.WithBeamSearchSamplingStrategy(); return builder; } protected override void EndProcessing() { lock (_disposeLock) { if (_isDisposed) return; _isDisposed = true; } try { // Cancel any ongoing operations first if (_cts != null && !_cts.IsCancellationRequested) { _cts.Cancel(); } // Dispose Whisper processor first (it uses the factory) if (_processor != null) { try { // Properly dispose async resources if (_processor is IAsyncDisposable asyncDisposable) { // Wait for async disposal to complete asyncDisposable.DisposeAsync().AsTask().Wait(TimeSpan.FromSeconds(50)); } else if (_processor is IDisposable disposable) { disposable.Dispose(); } } catch (Exception ex) { WriteVerbose($"Error disposing Whisper processor: {ex.Message}"); } finally { _processor = null; } } // Then dispose Whisper factory if (_whisperFactory != null) { try { _whisperFactory.Dispose(); } catch (Exception ex) { WriteVerbose($"Error disposing Whisper factory: {ex.Message}"); } finally { _whisperFactory = null; } } // Finally dispose cancellation token source if (_cts != null) { try { _cts.Dispose(); } catch (Exception ex) { WriteVerbose($"Error disposing cancellation token source: {ex.Message}"); } finally { _cts = null; } } } catch (Exception ex) { WriteVerbose($"Error in EndProcessing: {ex.Message}"); } base.EndProcessing(); } private static async Task DownloadModel(string fileName, GgmlType ggmlType) { Console.WriteLine($"Downloading Model {fileName}"); using var modelStream = await WhisperGgmlDownloader.GetGgmlModelAsync(ggmlType); using var fileWriter = File.OpenWrite(fileName); await modelStream.CopyToAsync(fileWriter); } private static string GetModelFileName(GgmlType modelType) { return $"ggml-{modelType}.bin"; } } } |