BotSharp/tests/BotSharp.Test.RealtimeVoice/Program.cs
2025-04-06 23:15:27 -05:00

104 lines
2.9 KiB
C#

using BotSharp.Abstraction.Conversations.Enums;
using BotSharp.Abstraction.Conversations.Models;
using BotSharp.Abstraction.Conversations;
using BotSharp.OpenAPI;
using System.Text.Json;
using Google.Ai.Generativelanguage.V1Beta2;
var services = ServiceBuilder.CreateHostBuilder();
var channel = services.GetRequiredService<IStreamChannel>();
Console.WriteLine("PCM-16 Microphone Capture (24kHz Sample Rate)");
Console.WriteLine("-----------------------------------------------");
var convService = services.GetRequiredService<IConversationService>();
var conv = new Conversation
{
AgentId = "01e2fc5c-2c89-4ec7-8470-7688608b496c",
Channel = ConversationChannel.Phone,
Title = $"Test",
Tags = [],
};
conv = await convService.NewConversation(conv);
await channel.ConnectAsync(conv.Id);
var hub = services.GetRequiredService<IRealtimeHub>();
var conn = hub.SetHubConnection(conv.Id);
var completer = hub.SetCompleter("openai");
await hub.ConnectToModel(async data =>
{
var response = JsonSerializer.Deserialize<ModelResponseEvent>(data);
if (response.Event == "media")
{
var message = JsonSerializer.Deserialize<ModelResponseMediaEvent>(data);
await channel.SendAsync(Convert.FromBase64String(message.Media), CancellationToken.None);
}
});
StreamReceiveResult result;
var buffer = new byte[1024 * 8];
conn.OnModelMessageReceived = message =>
JsonSerializer.Serialize(new
{
@event = "media",
media = message
});
conn.OnModelAudioResponseDone = () =>
JsonSerializer.Serialize(new
{
@event = "mark",
mark = new { name = "responsePart" }
});
conn.OnModelUserInterrupted = () =>
JsonSerializer.Serialize(new
{
@event = "clear"
});
do
{
var seg = new ArraySegment<byte>(buffer);
result = await channel.ReceiveAsync(seg, CancellationToken.None);
await completer.AppenAudioBuffer(seg, result.Count);
// Display the audio level
int audioLevel = CalculateAudioLevel(buffer, result.Count);
DisplayAudioLevel(audioLevel);
} while (result.Status == StreamChannelStatus.Open);
int CalculateAudioLevel(byte[] buffer, int bytesRecorded)
{
// Simple audio level calculation (RMS)
int sum = 0;
for (int i = 0; i < bytesRecorded; i += 2)
{
if (i + 1 < bytesRecorded)
{
short sample = (short)((buffer[i + 1] << 8) | buffer[i]);
sum += Math.Abs(sample);
}
}
return bytesRecorded > 0 ? sum / (bytesRecorded / 2) : 0;
}
void DisplayAudioLevel(int level)
{
// Normalize level to 0-50 range for display
int displayLevel = Math.Min(50, level / 100);
// Clear the current line
Console.Write("\r" + new string(' ', 60));
// Display audio level as a bar
Console.Write("\rMicrophone: [");
Console.Write(new string('#', displayLevel));
Console.Write(new string(' ', 50 - displayLevel));
Console.Write("]");
}