fix: features de audio

.claude/settings.local.json

@@ -20,7 +20,9 @@
       "Bash(dotnet build:*)",
       "Bash(rm:*)",
       "Bash(dotnet add package:*)",
-      "Bash(dir:*)"
+      "Bash(dir:*)",
+      "Bash(where:*)",
+      "Bash(winget install:*)"
     ],
     "deny": [],
     "ask": []

Areas/AudioTools/Views/SpeechToText/Index.cshtml

@@ -1,6 +1,7 @@
 @{
     ViewData["Title"] = "Áudio para Texto (Transcrição)";
     var culture = ViewContext.RouteData.Values["culture"] as string ?? "pt-BR";
+    Layout = "_Layout";
 }
 
 <div class="text-center mb-5">

Areas/AudioTools/Views/TextToSpeech/Index.cshtml

@@ -1,5 +1,6 @@
 @{
     ViewData["Title"] = "Texto para Áudio (Voz)";
+    Layout = "_Layout";
 }
 
 <div class="text-center mb-5">
@@ -31,12 +32,22 @@
             </div>
 
             <div class="d-grid gap-2 d-md-flex justify-content-md-center">
-                <button type="button" class="btn btn-primary btn-lg px-5" onclick="speak()">
+                <button type="button" class="btn btn-primary btn-lg px-5" id="btnSpeak" onclick="speak()">
                     <i class="bi bi-play-fill me-2"></i>Ouvir
                 </button>
-                <button type="button" class="btn btn-outline-danger btn-lg" onclick="stop()">
+                <button type="button" class="btn btn-outline-danger btn-lg" id="btnStop" onclick="stop()" style="display: none;">
                     <i class="bi bi-stop-fill me-2"></i>Parar
                 </button>
+                <button type="button" class="btn btn-success btn-lg" id="btnDownload" onclick="downloadAudio()">
+                    <i class="bi bi-download me-2" id="iconDownload"></i><span id="btnDownloadText">Baixar OGG</span>
+                </button>
+            </div>
+
+            <div id="downloadProgress" class="mt-3" style="display: none;">
+                <div class="progress">
+                    <div class="progress-bar progress-bar-striped progress-bar-animated" role="progressbar" style="width: 100%"></div>
+                </div>
+                <small class="text-muted">Gerando áudio...</small>
             </div>
         </div>
 
@@ -49,15 +60,15 @@
 
 @section Scripts {
     <script>
+        // Variáveis globais
         const synth = window.speechSynthesis;
-        const voiceSelect = document.querySelector('#voiceSelect');
-        const textInput = document.querySelector('#textInput');
-        const rate = document.querySelector('#rate');
-        const pitch = document.querySelector('#pitch');
-
         let voices = [];
 
+        // Função para popular lista de vozes
         function populateVoiceList() {
+            const voiceSelect = document.getElementById('voiceSelect');
+            if (!voiceSelect) return;
+
             voices = synth.getVoices().sort(function (a, b) {
                 const aname = a.name.toUpperCase();
                 const bname = b.name.toUpperCase();
@@ -66,8 +77,9 @@
                 else return 0;
             });
 
-            const selectedIndex = voiceSelect.selectedIndex < 0 ? 0 : voiceSelect.selectedIndex;
             voiceSelect.innerHTML = '';
+            let ptBrIndex = -1;
+            let ptIndex = -1;
 
             for (let i = 0; i < voices.length; i++) {
                 const option = document.createElement('option');
@@ -80,43 +92,205 @@
                 option.setAttribute('data-lang', voices[i].lang);
                 option.setAttribute('data-name', voices[i].name);
                 voiceSelect.appendChild(option);
+
+                // Procurar voz pt-BR (prioridade) ou pt (fallback)
+                if (ptBrIndex === -1 && voices[i].lang.toLowerCase() === 'pt-br') {
+                    ptBrIndex = i;
+                } else if (ptIndex === -1 && voices[i].lang.toLowerCase().startsWith('pt')) {
+                    ptIndex = i;
                 }
-            voiceSelect.selectedIndex = selectedIndex;
             }
 
+            // Selecionar voz pt-BR por padrão, ou pt, ou primeira disponível
+            if (ptBrIndex !== -1) {
+                voiceSelect.selectedIndex = ptBrIndex;
+                console.log('Voz pt-BR selecionada por padrão:', voices[ptBrIndex].name);
+            } else if (ptIndex !== -1) {
+                voiceSelect.selectedIndex = ptIndex;
+                console.log('Voz pt selecionada por padrão:', voices[ptIndex].name);
+            } else {
+                voiceSelect.selectedIndex = 0;
+            }
+
+            console.log('Vozes carregadas:', voices.length);
+        }
+
+        // Inicializar vozes
         populateVoiceList();
         if (speechSynthesis.onvoiceschanged !== undefined) {
             speechSynthesis.onvoiceschanged = populateVoiceList;
         }
 
-        function speak() {
-            if (synth.speaking) {
-                console.error('speechSynthesis.speaking');
+        // Função global para falar - acessível pelo onclick
+        window.speak = function() {
+            console.log('Função speak() chamada');
+
+            const textInput = document.getElementById('textInput');
+            const voiceSelect = document.getElementById('voiceSelect');
+            const rate = document.getElementById('rate');
+            const pitch = document.getElementById('pitch');
+
+            if (!textInput || !voiceSelect) {
+                console.error('Elementos não encontrados');
                 return;
             }
-            if (textInput.value !== '') {
-                const utterThis = new SpeechSynthesisUtterance(textInput.value);
+
+            if (synth.speaking) {
+                console.log('Já está falando, cancelando...');
+                synth.cancel();
+            }
+
+            const text = textInput.value.trim();
+            if (text === '') {
+                alert('Por favor, digite algum texto para ser lido.');
+                return;
+            }
+
+            console.log('Texto a falar:', text);
+
+            const utterThis = new SpeechSynthesisUtterance(text);
+
+            utterThis.onstart = function(event) {
+                console.log('Iniciou a fala');
+                document.getElementById('btnStop').style.display = 'inline-block';
+                document.getElementById('btnSpeak').disabled = true;
+            };
+
             utterThis.onend = function(event) {
-                    console.log('SpeechSynthesisUtterance.onend');
-                }
+                console.log('Terminou a fala');
+                document.getElementById('btnStop').style.display = 'none';
+                document.getElementById('btnSpeak').disabled = false;
+            };
+
             utterThis.onerror = function(event) {
-                    console.error('SpeechSynthesisUtterance.onerror');
-                }
-                const selectedOption = voiceSelect.selectedOptions[0].getAttribute('data-name');
+                console.error('Erro na fala:', event.error);
+                document.getElementById('btnStop').style.display = 'none';
+                document.getElementById('btnSpeak').disabled = false;
+            };
+
+            // Selecionar voz
+            if (voiceSelect.selectedOptions.length > 0) {
+                const selectedVoiceName = voiceSelect.selectedOptions[0].getAttribute('data-name');
                 for (let i = 0; i < voices.length; i++) {
-                    if (voices[i].name === selectedOption) {
+                    if (voices[i].name === selectedVoiceName) {
                         utterThis.voice = voices[i];
+                        console.log('Voz selecionada:', voices[i].name);
                         break;
                     }
                 }
-                utterThis.pitch = pitch.value;
-                utterThis.rate = rate.value;
+            }
+
+            utterThis.pitch = parseFloat(pitch.value);
+            utterThis.rate = parseFloat(rate.value);
+
+            console.log('Pitch:', utterThis.pitch, 'Rate:', utterThis.rate);
+
+            // Falar
             synth.speak(utterThis);
+        };
+
+        // Função global para parar
+        window.stop = function() {
+            console.log('Função stop() chamada');
+            synth.cancel();
+            document.getElementById('btnStop').style.display = 'none';
+            document.getElementById('btnSpeak').disabled = false;
+        };
+
+        // Detectar se é dispositivo móvel
+        const isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
+
+        // Atualizar texto do botão para dispositivos móveis
+        if (isMobile && navigator.canShare) {
+            document.getElementById('iconDownload').className = 'bi bi-share me-2';
+            document.getElementById('btnDownloadText').textContent = 'Compartilhar';
+        }
+
+        // Função global para baixar/compartilhar áudio OGG
+        window.downloadAudio = async function() {
+            const textInput = document.getElementById('textInput');
+            const voiceSelect = document.getElementById('voiceSelect');
+            const rate = document.getElementById('rate');
+            const pitch = document.getElementById('pitch');
+            const btnDownload = document.getElementById('btnDownload');
+            const downloadProgress = document.getElementById('downloadProgress');
+
+            const text = textInput.value.trim();
+            if (text === '') {
+                alert('Por favor, digite algum texto para gerar o áudio.');
+                return;
+            }
+
+            // Obter idioma da voz selecionada
+            let lang = 'pt-BR';
+            if (voiceSelect.selectedOptions.length > 0) {
+                lang = voiceSelect.selectedOptions[0].getAttribute('data-lang') || 'pt-BR';
+            }
+
+            // Mostrar progresso
+            btnDownload.disabled = true;
+            downloadProgress.style.display = 'block';
+
+            try {
+                const response = await fetch('/api/tts/generate', {
+                    method: 'POST',
+                    headers: {
+                        'Content-Type': 'application/json'
+                    },
+                    body: JSON.stringify({
+                        text: text,
+                        language: lang,
+                        rate: parseFloat(rate.value),
+                        pitch: parseFloat(pitch.value)
+                    })
+                });
+
+                if (!response.ok) {
+                    const error = await response.text();
+                    throw new Error(error || 'Erro ao gerar áudio');
+                }
+
+                const blob = await response.blob();
+
+                // Se for mobile e suportar Web Share API, usar compartilhamento nativo
+                if (isMobile && navigator.canShare) {
+                    const file = new File([blob], 'audio.ogg', { type: 'audio/ogg' });
+
+                    if (navigator.canShare({ files: [file] })) {
+                        try {
+                            await navigator.share({
+                                files: [file],
+                                title: 'Áudio gerado',
+                                text: 'Áudio gerado pelo Convert-It'
+                            });
+                            return; // Compartilhamento bem sucedido
+                        } catch (shareError) {
+                            if (shareError.name !== 'AbortError') {
+                                console.log('Compartilhamento cancelado ou falhou, usando download');
+                            }
+                        }
                     }
                 }
 
-        function stop() {
-            synth.cancel();
+                // Fallback: download tradicional
+                const url = window.URL.createObjectURL(blob);
+                const a = document.createElement('a');
+                a.href = url;
+                a.download = 'audio.ogg';
+                document.body.appendChild(a);
+                a.click();
+                document.body.removeChild(a);
+                window.URL.revokeObjectURL(url);
+
+            } catch (error) {
+                console.error('Erro:', error);
+                alert('Erro ao gerar áudio: ' + error.message);
+            } finally {
+                btnDownload.disabled = false;
+                downloadProgress.style.display = 'none';
             }
+        };
+
+        console.log('Script de Text-to-Speech carregado com sucesso!');
     </script>
 }

Controllers/TtsApiController.cs

@@ -0,0 +1,67 @@
+using Microsoft.AspNetCore.Mvc;
+using Convert_It_Online.Services;
+
+namespace Convert_It_Online.Controllers
+{
+    [ApiController]
+    [Route("api/tts")]
+    public class TtsApiController : ControllerBase
+    {
+        private readonly ITextToSpeechService _ttsService;
+        private readonly ILogger<TtsApiController> _logger;
+
+        public TtsApiController(ITextToSpeechService ttsService, ILogger<TtsApiController> logger)
+        {
+            _ttsService = ttsService;
+            _logger = logger;
+        }
+
+        [HttpPost("generate")]
+        public async Task<IActionResult> Generate([FromBody] TtsRequest request)
+        {
+            if (string.IsNullOrWhiteSpace(request.Text))
+            {
+                return BadRequest("Texto é obrigatório.");
+            }
+
+            // Limitar tamanho do texto para evitar abusos
+            if (request.Text.Length > 5000)
+            {
+                return BadRequest("Texto muito longo. Máximo de 5000 caracteres.");
+            }
+
+            try
+            {
+                _logger.LogInformation("Gerando áudio TTS: {Length} caracteres, idioma: {Lang}",
+                    request.Text.Length, request.Language);
+
+                var audioBytes = await _ttsService.GenerateAudioAsync(
+                    request.Text,
+                    request.Language ?? "pt-BR",
+                    request.Rate ?? 1.0f,
+                    request.Pitch ?? 1.0f
+                );
+
+                return File(audioBytes, "audio/ogg", "audio.ogg");
+            }
+            catch (InvalidOperationException ex)
+            {
+                _logger.LogWarning(ex, "TTS não disponível");
+                return StatusCode(503, "Serviço de síntese de voz não disponível no momento.");
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Erro ao gerar áudio TTS");
+                return StatusCode(500, "Erro ao gerar áudio.");
+            }
+        }
+    }
+
+    public class TtsRequest
+    {
+        public string Text { get; set; } = string.Empty;
+        public string? Language { get; set; }
+        public float? Rate { get; set; }
+        public float? Pitch { get; set; }
+    }
+}

Dockerfile

@@ -44,10 +44,11 @@ FROM base AS final
 WORKDIR /app
 COPY --from=publish /app/publish .
 
-# Instalar ffmpeg e bibliotecas nativas (rodar como root)
+# Instalar ffmpeg, espeak-ng e bibliotecas nativas (rodar como root)
 USER root
 RUN apt-get update && apt-get install -y \
     ffmpeg \
+    espeak-ng \
     libc6-dev \
     && rm -rf /var/lib/apt/lists/*
 USER app

Program.cs

@@ -164,6 +164,7 @@ builder.Services.AddLocalization();
 
 builder.Services.AddSingleton<IUrlTranslationService, UrlTranslationService>();
 builder.Services.AddSingleton<IAudioTranscriptionService, AudioTranscriptionService>();
+builder.Services.AddSingleton<ITextToSpeechService, TextToSpeechService>();
 
 var supportedCultures = new[] { "pt-BR", "es-MX", "es-CL", "es-PY" };
 builder.Services.Configure<RequestLocalizationOptions>(options =>

Services/AudioTranscriptionService.cs

@@ -1,6 +1,8 @@
 using System;
+using System.Diagnostics;
 using System.IO;
 using System.Net.Http;
+using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using Whisper.net;
 using Whisper.net.Ggml;
@@ -14,6 +16,7 @@ namespace Convert_It_Online.Services
         private readonly string _modelPath;
         private readonly ILogger<AudioTranscriptionService> _logger;
         private readonly HttpClient _httpClient;
+        private static bool _ffmpegConfigured = false;
 
         public AudioTranscriptionService(ILogger<AudioTranscriptionService> logger)
         {
@@ -27,6 +30,123 @@ namespace Convert_It_Online.Services
             {
                 Directory.CreateDirectory(modelsDir!);
             }
+
+            // Configurar FFmpeg uma única vez
+            ConfigureFFmpeg();
+        }
+
+        private void ConfigureFFmpeg()
+        {
+            if (_ffmpegConfigured) return;
+
+            try
+            {
+                string? ffmpegPath = null;
+
+                // 1. Primeiro, verificar variável de ambiente (maior prioridade)
+                var envPath = Environment.GetEnvironmentVariable("FFMPEG_PATH");
+                if (!string.IsNullOrEmpty(envPath) && Directory.Exists(envPath))
+                {
+                    ffmpegPath = envPath;
+                    _logger.LogInformation("FFmpeg configurado via FFMPEG_PATH: {Path}", ffmpegPath);
+                }
+
+                // 2. Se não encontrou, procurar em locais comuns
+                if (ffmpegPath == null)
+                {
+                    if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+                    {
+                        // Windows: procurar em locais comuns
+                        var possiblePaths = new[]
+                        {
+                            Path.Combine(AppContext.BaseDirectory, "ffmpeg"),
+                            @"C:\Apps\ffmpeg\bin",
+                            @"C:\Apps\ffmpeg",
+                            Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), "ffmpeg", "bin"),
+                            @"C:\ffmpeg\bin",
+                            @"C:\ffmpeg",
+                            @"C:\Program Files\ffmpeg\bin",
+                            @"C:\tools\ffmpeg\bin",
+                            @"C:\tools\ffmpeg"
+                        };
+
+                        foreach (var path in possiblePaths)
+                        {
+                            var ffmpegExe = Path.Combine(path, "ffmpeg.exe");
+                            if (File.Exists(ffmpegExe))
+                            {
+                                ffmpegPath = path;
+                                _logger.LogInformation("FFmpeg encontrado em: {Path}", ffmpegPath);
+                                break;
+                            }
+                        }
+
+                        // Tentar encontrar via PATH
+                        if (ffmpegPath == null)
+                        {
+                            ffmpegPath = FindFFmpegInPath("ffmpeg.exe");
+                        }
+                    }
+                    else
+                    {
+                        // Linux: verificar locais padrão
+                        var possiblePaths = new[]
+                        {
+                            "/usr/bin",
+                            "/usr/local/bin",
+                            "/opt/ffmpeg/bin"
+                        };
+
+                        foreach (var path in possiblePaths)
+                        {
+                            var ffmpegExe = Path.Combine(path, "ffmpeg");
+                            if (File.Exists(ffmpegExe))
+                            {
+                                ffmpegPath = path;
+                                _logger.LogInformation("FFmpeg encontrado em: {Path}", ffmpegPath);
+                                break;
+                            }
+                        }
+                    }
+                }
+
+                if (!string.IsNullOrEmpty(ffmpegPath))
+                {
+                    FFmpeg.SetExecutablesPath(ffmpegPath);
+                    _logger.LogInformation("FFmpeg.SetExecutablesPath configurado: {Path}", ffmpegPath);
+                }
+                else
+                {
+                    _logger.LogWarning("FFmpeg não encontrado em caminhos conhecidos. A transcrição de áudio pode falhar.");
+                }
+
+                _ffmpegConfigured = true;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Erro ao configurar FFmpeg");
+            }
+        }
+
+        private string? FindFFmpegInPath(string executable)
+        {
+            var pathEnv = Environment.GetEnvironmentVariable("PATH");
+            if (string.IsNullOrEmpty(pathEnv)) return null;
+
+            var separator = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? ';' : ':';
+            var paths = pathEnv.Split(separator);
+
+            foreach (var path in paths)
+            {
+                var fullPath = Path.Combine(path.Trim(), executable);
+                if (File.Exists(fullPath))
+                {
+                    _logger.LogInformation("FFmpeg encontrado no PATH: {Path}", path);
+                    return path;
+                }
+            }
+
+            return null;
         }
 
         private async Task EnsureModelExistsAsync()

Services/ITextToSpeechService.cs

@@ -0,0 +1,9 @@
+using System.Threading.Tasks;
+
+namespace Convert_It_Online.Services
+{
+    public interface ITextToSpeechService
+    {
+        Task<byte[]> GenerateAudioAsync(string text, string language = "pt-BR", float rate = 1.0f, float pitch = 1.0f);
+    }
+}

Services/TextToSpeechService.cs

@@ -0,0 +1,209 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+
+namespace Convert_It_Online.Services
+{
+    public class TextToSpeechService : ITextToSpeechService
+    {
+        private readonly ILogger<TextToSpeechService> _logger;
+        private readonly string? _espeakPath;
+        private readonly string? _ffmpegPath;
+
+        public TextToSpeechService(ILogger<TextToSpeechService> logger)
+        {
+            _logger = logger;
+            _espeakPath = FindExecutable("espeak-ng");
+            _ffmpegPath = FindExecutable("ffmpeg");
+
+            if (_espeakPath != null)
+                _logger.LogInformation("espeak-ng encontrado em: {Path}", _espeakPath);
+            else
+                _logger.LogWarning("espeak-ng não encontrado. TTS pode não funcionar.");
+
+            if (_ffmpegPath != null)
+                _logger.LogInformation("FFmpeg encontrado em: {Path}", _ffmpegPath);
+            else
+                _logger.LogWarning("FFmpeg não encontrado. Conversão para OGG pode não funcionar.");
+        }
+
+        private string? FindExecutable(string name)
+        {
+            var isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+            var executable = isWindows ? $"{name}.exe" : name;
+
+            // Caminhos comuns
+            string[] searchPaths;
+            if (isWindows)
+            {
+                searchPaths = new[]
+                {
+                    Path.Combine(AppContext.BaseDirectory, name),
+                    @"C:\Program Files\eSpeak NG",
+                    @"C:\Program Files (x86)\eSpeak NG",
+                    @"C:\Apps\espeak-ng",
+                    @"C:\Apps\ffmpeg\bin",
+                    @"C:\ffmpeg\bin",
+                    @"C:\Program Files\ffmpeg\bin"
+                };
+            }
+            else
+            {
+                searchPaths = new[]
+                {
+                    "/usr/bin",
+                    "/usr/local/bin",
+                    "/opt/homebrew/bin"
+                };
+            }
+
+            foreach (var path in searchPaths)
+            {
+                var fullPath = Path.Combine(path, executable);
+                if (File.Exists(fullPath))
+                    return fullPath;
+            }
+
+            // Tentar encontrar via PATH
+            var pathEnv = Environment.GetEnvironmentVariable("PATH");
+            if (!string.IsNullOrEmpty(pathEnv))
+            {
+                var separator = isWindows ? ';' : ':';
+                foreach (var path in pathEnv.Split(separator))
+                {
+                    var fullPath = Path.Combine(path.Trim(), executable);
+                    if (File.Exists(fullPath))
+                        return fullPath;
+                }
+            }
+
+            return null;
+        }
+
+        public async Task<byte[]> GenerateAudioAsync(string text, string language = "pt-BR", float rate = 1.0f, float pitch = 1.0f)
+        {
+            if (_espeakPath == null)
+                throw new InvalidOperationException("espeak-ng não está instalado no servidor.");
+
+            if (_ffmpegPath == null)
+                throw new InvalidOperationException("FFmpeg não está instalado no servidor.");
+
+            var tempWavPath = Path.Combine(Path.GetTempPath(), $"{Guid.NewGuid()}.wav");
+            var tempOggPath = Path.Combine(Path.GetTempPath(), $"{Guid.NewGuid()}.ogg");
+
+            try
+            {
+                // Mapear código de idioma para espeak
+                var espeakLang = MapLanguageCode(language);
+
+                // Calcular velocidade (espeak usa words per minute, padrão ~175)
+                var wordsPerMinute = (int)(175 * rate);
+                if (wordsPerMinute < 80) wordsPerMinute = 80;
+                if (wordsPerMinute > 450) wordsPerMinute = 450;
+
+                // Calcular pitch (espeak usa 0-99, padrão 50)
+                var espeakPitch = (int)(50 * pitch);
+                if (espeakPitch < 0) espeakPitch = 0;
+                if (espeakPitch > 99) espeakPitch = 99;
+
+                // Gerar WAV com espeak-ng
+                var espeakArgs = $"-v {espeakLang} -s {wordsPerMinute} -p {espeakPitch} -w \"{tempWavPath}\" \"{EscapeText(text)}\"";
+
+                _logger.LogInformation("Executando espeak-ng: {Args}", espeakArgs);
+
+                var espeakProcess = new Process
+                {
+                    StartInfo = new ProcessStartInfo
+                    {
+                        FileName = _espeakPath,
+                        Arguments = espeakArgs,
+                        RedirectStandardOutput = true,
+                        RedirectStandardError = true,
+                        UseShellExecute = false,
+                        CreateNoWindow = true
+                    }
+                };
+
+                espeakProcess.Start();
+                await espeakProcess.WaitForExitAsync();
+
+                if (espeakProcess.ExitCode != 0)
+                {
+                    var error = await espeakProcess.StandardError.ReadToEndAsync();
+                    throw new Exception($"espeak-ng falhou: {error}");
+                }
+
+                if (!File.Exists(tempWavPath))
+                    throw new Exception("espeak-ng não gerou o arquivo WAV.");
+
+                // Converter WAV para OGG com FFmpeg
+                var ffmpegArgs = $"-i \"{tempWavPath}\" -c:a libvorbis -q:a 4 -y \"{tempOggPath}\"";
+
+                _logger.LogInformation("Executando FFmpeg: {Args}", ffmpegArgs);
+
+                var ffmpegProcess = new Process
+                {
+                    StartInfo = new ProcessStartInfo
+                    {
+                        FileName = _ffmpegPath,
+                        Arguments = ffmpegArgs,
+                        RedirectStandardOutput = true,
+                        RedirectStandardError = true,
+                        UseShellExecute = false,
+                        CreateNoWindow = true
+                    }
+                };
+
+                ffmpegProcess.Start();
+                await ffmpegProcess.WaitForExitAsync();
+
+                if (ffmpegProcess.ExitCode != 0)
+                {
+                    var error = await ffmpegProcess.StandardError.ReadToEndAsync();
+                    throw new Exception($"FFmpeg falhou: {error}");
+                }
+
+                if (!File.Exists(tempOggPath))
+                    throw new Exception("FFmpeg não gerou o arquivo OGG.");
+
+                return await File.ReadAllBytesAsync(tempOggPath);
+            }
+            finally
+            {
+                // Limpar arquivos temporários
+                if (File.Exists(tempWavPath))
+                    File.Delete(tempWavPath);
+                if (File.Exists(tempOggPath))
+                    File.Delete(tempOggPath);
+            }
+        }
+
+        private string MapLanguageCode(string language)
+        {
+            // Mapear códigos de idioma para vozes espeak-ng
+            return language.ToLower() switch
+            {
+                "pt-br" => "pt-br",
+                "pt" => "pt",
+                "pt-pt" => "pt-pt",
+                "es" or "es-mx" or "es-cl" or "es-py" or "es-es" => "es",
+                "en" or "en-us" => "en-us",
+                "en-gb" => "en-gb",
+                _ => "pt-br" // Padrão
+            };
+        }
+
+        private string EscapeText(string text)
+        {
+            // Escapar aspas e caracteres especiais para linha de comando
+            return text
+                .Replace("\\", "\\\\")
+                .Replace("\"", "\\\"")
+                .Replace("\n", " ")
+                .Replace("\r", "");
+        }
+    }
+}