I'm developing WPF application that stores some sound files as array of bytes in database. I want play these files via MediaElement control. MediaElement has Source property but its type is Uri. Does anyone know if it is possible to convert array of bytes to Uri?
Thanks
Here is a workaround using a self hosted media server
let's start
MainWindow.xaml
<MediaElement x:Name="media" />
MainWindow.cs
public MainWindow()
{
InitializeComponent();
//host a media server on some port
MediaServer ws = new MediaServer(RenderVideo, "http://localhost:8080/");
ws.Run();
//set the media server's url as the source of media element
media.Source = new Uri("http://localhost:8080/");
}
private byte[] RenderVideo(HttpListenerRequest r)
{
//get the video bytes from the server etc. and return the same
return File.ReadAllBytes("e:\\vids\\Wildlife.wmv");
}
MediaServer class
class MediaServer
{
private readonly HttpListener _listener = new HttpListener();
private readonly Func<HttpListenerRequest, byte[]> _responderMethod;
public MediaServer(Func<HttpListenerRequest, byte[]> method, string prefix)
{
if (!HttpListener.IsSupported)
throw new NotSupportedException(
"Needs Windows XP SP2, Server 2003 or later.");
if (prefix == null)
throw new ArgumentException("prefix");
if (method == null)
throw new ArgumentException("method");
_listener.Prefixes.Add(prefix);
_responderMethod = method;
_listener.Start();
}
public void Run()
{
ThreadPool.QueueUserWorkItem((o) =>
{
try
{
while (_listener.IsListening)
{
ThreadPool.QueueUserWorkItem((c) =>
{
var ctx = c as HttpListenerContext;
try
{
byte[] buf = _responderMethod(ctx.Request);
ctx.Response.ContentLength64 = buf.Length;
ctx.Response.ContentType = "application/octet-stream";
ctx.Response.OutputStream.Write(buf, 0, buf.Length);
}
catch { }
finally
{
ctx.Response.OutputStream.Close();
}
}, _listener.GetContext());
}
}
catch { }
});
}
public void Stop()
{
_listener.Stop();
_listener.Close();
}
}
give it a try, I am successful able to play the video, I hope same for you too
For the MediaServer I have used Simple C# Web Server with some modifications.
above could be made shorter using Reactive Extensions. I'll give a try on the same if this works for you.
Also we can make the media server generic to pass the id of the video in url and in return it will stream back the desired video from the DB
Related
I am developing a project using c#.in my project i should get the camera stream .So i use onvif to get the stream but i faced a problem .some of my camera can't support onvif and they support RTSP,and i have to use rtsp in my project to :
Here is my onvif code to get the camera stream :
async void StartCameraAfterLogin()
{
//Dooooorbin
await ProcessConnect("http://172.16.0.52/onvif/device_service"
, Properties.Settings.Default.CameraUserName, Properties.Settings.Default.CameraPassword);
}
async Task ProcessConnect(string addr, string name, string pass)
{
//Release();
//ctrlInfo.Content = new ProgressControl();
var account = new System.Net.NetworkCredential(name, pass);
NvtSessionFactory factory = new NvtSessionFactory(account);
////This is syncronouse ui blokking call
//var session = factory.CreateSession(new Uri(addr);
try
{
var session = factory.CreateSession(new Uri(addr));
ss = session;
await FillInfoArea(session);
}
catch (Exception err)
{
Algoa.Utilities.Logger.ToDebug(err);
//ctrlInfo.Content = new ErrorControl(err);
}
}
string profie;
private async Task FillInfoArea(INvtSession session)
{
var profInfo = new ProfieInfoControl();
try
{
var streamData = await profInfo.Init(session);
//sp.Children.Add(profInfo);
profie = profInfo.valueToken.Text;
InitVideoControl(streamData.Item1, streamData.Item4, session.credentials);
//InitPtzControl(session, streamData.Item2, streamData.Item3);
}
catch (Exception err)
{
Algoa.Utilities.Logger.ToDebug(err);
}
//ctrlInfo.Content = sp;
}
private void InitVideoControl(string suri, System.Windows.Size size, System.Net.NetworkCredential networkCredential)
{
InitPlayer(suri, networkCredential, size);
}
public void InitPlayer(string videoUri, NetworkCredential account, System.Windows.Size sz = default(System.Windows.Size))
{
player = new HostedPlayer();
playerDisposable.Add(player);
if (sz != default(System.Windows.Size))
videoBuff = new VideoBuffer((int)sz.Width, (int)sz.Height);
else
{
videoBuff = new VideoBuffer(720, 576);
}
player.SetVideoBuffer(videoBuff);
MediaStreamInfo.Transport transp = MediaStreamInfo.Transport.Udp;
MediaStreamInfo mstrInfo = null;
if (account != null)
{
mstrInfo = new MediaStreamInfo(videoUri, transp, new UserNameToken(account.UserName, account.Password));//, transp, null);
}
else
{
mstrInfo = new MediaStreamInfo(videoUri, transp);
}
playerDisposable.Add(
player.Play(mstrInfo, this)
);
InitPlayback(videoBuff, true);
//{ // playing controls
// btnPause.Click += play;
// btnResume.Click += play;
//}
}
How can i convert my onvif url to rtsp url ?Is there any solution or i should change all part of my code?
I am new in camera stream coding .
I downloaded the OZEKI-SDK
private IIPCamera _camera;
private DrawingImageProvider _imageProvider = new DrawingImageProvider();
private MediaConnector _connector = new MediaConnector();
private VideoViewerWF _videoViewerWF1;
public Form1()
{
InitializeComponent();
// Create video viewer UI control
_videoViewerWF1 = new VideoViewerWF();
_videoViewerWF1.Name = "videoViewerWF1";
_videoViewerWF1.Size = panel1.Size;
panel1.Controls.Add(_videoViewerWF1);
// Bind the camera image to the UI control
_videoViewerWF1.SetImageProvider(_imageProvider);
}
// Connect camera video channel to image provider and start
private void connectBtn_Click(object sender, EventArgs e)
{
_camera = IPCameraFactory.GetCamera("rtsp://192.168.113.150:554/ufirststream", "root", "pass");
_connector.Connect(_camera.VideoChannel, _imageProvider);
_camera.Start();
_videoViewerWF1.Start();
}
As a another solution i finally used Accord.net library to capture rtsp stream.
I would like to keep on reading characteristic/set value changed event handlers for characteristics from my BLE 4.0 device, by using the ValueChanged callback in Universal Windows Platform C# in Visual Studio 2017.
I followed some tutorial from these sites: Damian Blog's Windows Universal with BLE, Bluetooth Gatt's Git Hub, Bluetooth Generic Attribute Profile - Heart Rate Service and Dr. Jukka's mobile Blog on BLE. All of them are using ValueChanged and I have tried to follow what they did.
Unfortunately, instead of ValueChanged being triggered, I receive the following error when using the ValueChanged callback.
System.ArgumentException: 'Value does not fall within the expected range.'
This line of code is producing the error:
characteristic.ValueChanged += Oncharacteristic_ValueChanged;
Here is more details of my source code:
NOTE: I am using COM 7 for my dongler and my program could discover the BLE's device name, and could discover the Uuid of the services and characteristics.
public List<string> serviceList = new List<string>();
public List<string> characteristicList = new List<string>();
public BluetoothLEDevice myDevice { get; set; }
public MainPage()
{
this.InitializeComponent();
}
private async void Page_Loaded(object sender, RoutedEventArgs e)
{
// Find the com port
string selector = SerialDevice.GetDeviceSelector("COM7");
DeviceInformationCollection devices = await DeviceInformation.FindAllAsync(selector);
if (devices.Count > 0)
{
var dialog = new MessageDialog("Com Device found");
await dialog.ShowAsync();
DeviceInformation deviceInfo = devices[0];
SerialDevice serialDevice = await SerialDevice.FromIdAsync(deviceInfo.Id);
serialDevice.BaudRate = 9600;
serialDevice.DataBits = 8;
serialDevice.StopBits = SerialStopBitCount.One;
serialDevice.Parity = SerialParity.None;
}
else
{
MessageDialog popup = new MessageDialog("Sorry, no device found.");
await popup.ShowAsync();
}
// After com port is found, search for device
foreach (DeviceInformation di in await DeviceInformation.FindAllAsync(BluetoothLEDevice.GetDeviceSelector()))
{
BluetoothLEDevice bleDevice = await BluetoothLEDevice.FromIdAsync(di.Id);
// Display BLE device name
var dialogBleDeviceName = new MessageDialog("BLE Device Name " + bleDevice.Name);
await dialogBleDeviceName.ShowAsync();
myDevice = bleDevice;
}
// Check device connection
myDevice.ConnectionStatusChanged += OnConnectionStatusChanged;
foreach (var service in myDevice.GattServices)
{
serviceList.Add(service.Uuid.ToString());
// Verify if service is discovered by displaying a popup
MessageDialog serviceUuidPopUp = new MessageDialog("Adding Service Uuid to list " + service.Uuid.ToString() );
await serviceUuidPopUp.ShowAsync();
foreach (var characteristic in service.GetAllCharacteristics())
{
var characteristicUuid = characteristic.Uuid.ToString().ToLowerInvariant();
characteristicList.Add(characteristicUuid);
// Verify if characteristic is discovered by displaying a popup
MessageDialog charUuidPopUp = new MessageDialog("Adding characteristic Uuid to list " + characteristicUuid);
await charUuidPopUp.ShowAsync();
// set value changed event handlers for characteristics
characteristic.ValueChanged += Oncharacteristic_ValueChanged;
}
}
}
private void OnConnectionStatusChanged(BluetoothLEDevice sender, object args)
{
if (sender.ConnectionStatus == BluetoothConnectionStatus.Connected)
{
System.Diagnostics.Debug.WriteLine("Connected");
}
else
{
System.Diagnostics.Debug.WriteLine("Disconnected");
}
}
private void Oncharacteristic_ValueChanged(GattCharacteristic sender, GattValueChangedEventArgs args)
{
byte[] data = new byte[args.CharacteristicValue.Length];
DataReader.FromBuffer(
args.CharacteristicValue).ReadBytes(data);
string text = Encoding.UTF8.GetString(data, 0, data.Length);
}
UPDATE 1
I tried to check Characteristic Properties before set value changed event handlers for my characteristics by following the answer given by rudi belt on SO.
if (characteristic.CharacteristicProperties == (GattCharacteristicProperties.Read | GattCharacteristicProperties.Notify))
{
characteristic.ValueChanged += Oncharacteristic_ValueChanged;
}
Unfortunately, this IF statement is not executed.
UPDATE 2
I have tried to remove ALL the codes inside Oncharacteristic_ValueChanged method. But it still gives me the same error
System.ArgumentException: 'Value does not fall within the expected range.'
I have been spending a lot of time trying to solve this problem. I will be very happy if anyone can help me on this. Thank you!
Reading your efforts in the former question I can provide a working example, but first some explanation.
myDevice.ConnectionStatusChanged is not needed, it is only used to notice a connection is lost or connected. You have to connect to your device first and handle things in the connection method.
After you have succeeded in connecting you have to get the service that contains the characteristic you want to use for read, write, notify or indicate.
When you have selected the service You can get the characteristics of that service.
Select the characteristic by Uuid, or in my example with CharacteristicProperties.HasFlag.
This flag in my example is Notify.
In the code comments you find extra info.
using System;
using System.Diagnostics;
using System.Threading.Tasks;
using Windows.Devices.Bluetooth;
using Windows.Devices.Bluetooth.GenericAttributeProfile;
using Windows.Devices.Enumeration;
using Windows.UI.Popups;
using Windows.UI.Xaml.Controls;
namespace App1
{
public sealed partial class MainPage : Page
{
GattDeviceServicesResult serviceResult = null;
private BluetoothLEDevice myDevice;
private GattCharacteristic selectedCharacteristic;
public MainPage()
{
this.InitializeComponent();
ConnectDevice();
}
private async void ConnectDevice()
{
//This works only if your device is already paired!
foreach (DeviceInformation di in await DeviceInformation.FindAllAsync(BluetoothLEDevice.GetDeviceSelector()))
{
BluetoothLEDevice bleDevice = await BluetoothLEDevice.FromIdAsync(di.Id);
// Display BLE device name
var dialogBleDeviceName = new MessageDialog("BLE Device Name " + bleDevice.Name);
await dialogBleDeviceName.ShowAsync();
myDevice = bleDevice;
}
if (myDevice != null)
{
int servicesCount = 3;//Fill in the amount of services from your device!!!!!
int tryCount = 0;
bool connected = false;
while (!connected)//This is to make sure all services are found.
{
tryCount++;
serviceResult = await myDevice.GetGattServicesAsync();
if (serviceResult.Status == GattCommunicationStatus.Success && serviceResult.Services.Count >= servicesCount)
{
connected = true;
Debug.WriteLine("Connected in " + tryCount + " tries");
}
if (tryCount > 5)//make this larger if faild
{
Debug.WriteLine("Failed to connect to device ");
return;
}
}
if (connected)
{
for (int i = 0; i < serviceResult.Services.Count; i++)
{
var service = serviceResult.Services[i];
//This must be the service that contains the Gatt-Characteristic you want to read from or write to !!!!!!!.
string myServiceUuid = "0000ffe0-0000-1000-8000-00805f9b34fb";
if (service.Uuid.ToString() == myServiceUuid)
{
Get_Characteriisics(service);
break;
}
}
}
}
}
private async void Get_Characteriisics(GattDeviceService myService)
{
var CharResult = await myService.GetCharacteristicsAsync();
if (CharResult.Status == GattCommunicationStatus.Success)
{
foreach (GattCharacteristic c in CharResult.Characteristics)
{
if (c.CharacteristicProperties.HasFlag(GattCharacteristicProperties.Notify))
{
selectedCharacteristic = c;
break;
}
}
try
{
// Write the ClientCharacteristicConfigurationDescriptor in order for server to send notifications.
var result = await selectedCharacteristic.WriteClientCharacteristicConfigurationDescriptorAsync(
GattClientCharacteristicConfigurationDescriptorValue.Notify);
if (result == GattCommunicationStatus.Success)
{
var dialogNotifications = new MessageDialog("Successfully registered for notifications");
await dialogNotifications.ShowAsync();
selectedCharacteristic.ValueChanged += SelectedCharacteristic_ValueChanged;
}
else
{
var dialogNotifications = new MessageDialog($"Error registering for notifications: {result}");
await dialogNotifications.ShowAsync();
}
}
catch (Exception ex)
{
// This usually happens when not all characteristics are found
// or selected characteristic has no Notify.
var dialogNotifications = new MessageDialog(ex.Message);
await dialogNotifications.ShowAsync();
await Task.Delay(100);
Get_Characteriisics(myService); //try again
//!!! Add a max try counter to prevent infinite loop!!!!!!!
}
}
else
{
var dialogNotifications = new MessageDialog("Restricted service. Can't read characteristics");
await dialogNotifications.ShowAsync();
}
}
private void SelectedCharacteristic_ValueChanged(GattCharacteristic sender, GattValueChangedEventArgs args)
{
}
}
}
If you have problems with this code feel free to ask in comments.
I'm developing an universal application Win8.1 / WP8.1
I'm able to discover and connect to the paired bluetooth devices (Stick readers - Rfid)
This is how I'm connecting
Variables
private IAsyncOperation<RfcommDeviceService> connectService;
private IAsyncAction connectAction;
private RfcommDeviceService rfcommService;
private RfcommServiceProvider rfcommProvider;
private StreamSocketListener listener;
private DataReader reader;
private DataWriter writer;
//Connection
public async Task ConnectToServiceAsync(string name)
{
DeviceInformation serviceInfo = null;
foreach (var device in devices)
{
if(device.Name == name)
{
serviceInfo = device;
break;
}
}
if (serviceInfo != null)
{
this.State = BluetoothConnectionState.Connecting;
try
{
// Initialize the target Bluetooth RFCOMM device service
connectService = RfcommDeviceService.FromIdAsync(serviceInfo.Id);
rfcommService = await connectService;
if (rfcommService != null)
{
rfcommProvider = await RfcommServiceProvider.CreateAsync(rfcommService.ServiceId);
// Create a socket and connect to the target
listener = new StreamSocketListener();
listener.ConnectionReceived += Listener_ConnectionReceived;
connectAction = listener.BindServiceNameAsync(rfcommService.ServiceId.AsString(), SocketProtectionLevel.BluetoothEncryptionAllowNullAuthentication);
await connectAction;//to make it cancellable
writer = new DataWriter(socket.OutputStream);
reader = new DataReader(socket.InputStream);
this.State = BluetoothConnectionState.Connected;
}
else
OnExceptionOccuredEvent(this, new Exception("Unable to create service.\nMake sure that the 'bluetooth.rfcomm' capability is declared with a function of type 'name:serialPort' in Package.appxmanifest."));
}
catch (TaskCanceledException)
{
this.State = BluetoothConnectionState.Disconnected;
}
catch (Exception ex)
{
this.State = BluetoothConnectionState.Disconnected;
OnExceptionOccuredEvent(this, ex);
}
}
}
//Then wait for a connection over the listener
private async void Listener_ConnectionReceived(StreamSocketListener sender, StreamSocketListenerConnectionReceivedEventArgs args)
{
DataReader inputreader = new DataReader(args.Socket.InputStream);
while (true)
{
try
{
inputreader.InputStreamOptions = InputStreamOptions.Partial;
// Read first byte (length of the subsequent message, 255 or less).
uint sizeFieldCount = await inputreader.LoadAsync(1);
if (sizeFieldCount != 1)
{
// The underlying socket was closed before we were able to read the whole data.
return;
}
// Read the message.
uint messageLength = inputreader.ReadByte();
uint actualMessageLength = await inputreader.LoadAsync(messageLength);
if (messageLength != actualMessageLength)
{
// The underlying socket was closed before we were able to read the whole data.
return;
}
// Read the message and process it.
string message = inputreader.ReadString(actualMessageLength);
OnMessageReceivedEvent(this, message);
}
catch (Exception ex)
{
if (inputreader != null)
OnExceptionOccuredEvent(this, ex);
}
}
}
The problem is that the Bluetooth Stick Reader never send a connection request, it just read the rfid device ID and sends it over the serial port.
So, I'm able to connect to the device but I don't know how to actively listen or read the incoming data.
Any help will be appreciated.
RFCOMM communication is Client/Server model. You need to define a server to broadcast the service and a client connected to the service.
As I saw from the code you post, it only includes the server side code which provides the service but there was no client connecting to service. Only when the client connected to the service, the ConnectionReceived event will be fired.
I have written a sample which host the RFCOMM service in a console application and consume the service in Windows Runtime App before (Code Sample).
The client code is as following:
rfcommServiceInfoCollection = await DeviceInformation.FindAllAsync(
RfcommDeviceService.GetDeviceSelector(RfcommServiceId.ObexObjectPush));
var count = rfcommServiceInfoCollection.Count;
Debug.WriteLine("Count of RFCOMM Service: " + count);
if(count > 0)
{
lock (this)
{
streamSocket = new StreamSocket();
}
var defaultSvcInfo = rfcommServiceInfoCollection.FirstOrDefault();
rfcommDeviceService = await RfcommDeviceService.FromIdAsync(defaultSvcInfo.Id);
if(rfcommDeviceService == null)
{
Debug.WriteLine("Rfcomm Device Service is NULL, ID = {0}", defaultSvcInfo.Id);
return;
}
Debug.WriteLine("ConnectionHostName: {0}, ConnectionServiceName: {1}", rfcommDeviceService.ConnectionHostName, rfcommDeviceService.ConnectionServiceName);
await streamSocket.ConnectAsync(rfcommDeviceService.ConnectionHostName, rfcommDeviceService.ConnectionServiceName);
By the way, do not forget to add the RFCOMM capabilities in your appxmanifest.
For example:
<m2:DeviceCapability Name="bluetooth.rfcomm">
<m2:Device Id="any">
<m2:Function Type="name:obexObjectPush" />
</m2:Device>
</m2:DeviceCapability
As Jeffrey said, this is a client/Server model, but in my case the client doesn't have any logic, and is not capable to request any connection.
Thank you for your samples, It helped a lot.
After trying several things I got some code working, and a "server" running and listening in the rfcomm service:
public async Task ConnectToServiceAsync(string name)
{
lock(this.interlock)
{
readBuffer = String.Empty;
}
DeviceInformation serviceInfo = null;
foreach (var device in devices)
{
if(device.Name == name)
{
serviceInfo = device;
break;
}
}
if (serviceInfo != null)
{
DeviceName = serviceInfo.Name;
this.State = BluetoothConnectionState.Connecting;
try
{
// Initialize the target Bluetooth RFCOMM device service
connectService = RfcommDeviceService.FromIdAsync(serviceInfo.Id);
rfcommService = await connectService;
if (rfcommService != null)
{
// Create a socket and connect to the target
socket = new StreamSocket();
connectAction = socket.ConnectAsync(rfcommService.ConnectionHostName, rfcommService.ConnectionServiceName, SocketProtectionLevel.BluetoothEncryptionAllowNullAuthentication);
await connectAction;//to make it cancellable
writer = new DataWriter(socket.OutputStream);
reader = new DataReader(socket.InputStream);
State = BluetoothConnectionState.Connected;
Task taskReceive = Task.Run(async () => { ListenForMessagesAsync(socket); });
taskReceive.ConfigureAwait(false);
}
else
OnExceptionOccuredEvent(this, new Exception("Unable to create service.\nMake sure that the 'bluetooth.rfcomm' capability is declared with a function of type 'name:serialPort' in Package.appxmanifest."));
}
catch (TaskCanceledException)
{
this.State = BluetoothConnectionState.Disconnected;
}
catch (Exception ex)
{
this.State = BluetoothConnectionState.Disconnected;
OnExceptionOccuredEvent(this, ex);
}
}
}
And the listener in
private async Task ListenForMessagesAsync(StreamSocket localsocket)
{
while (socket != null)
{
try
{
string message = String.Empty;
DataReader dataReader = new DataReader(localsocket.InputStream);
dataReader.InputStreamOptions = InputStreamOptions.Partial;
// Read the message and process it.
lock (this.interlock)
{
if (!message.Contains("\r\n"))
readBuffer = readBuffer + message;
else
{
var data = message.Split('\r');
readBuffer = readBuffer + data[0];
}
if (readBuffer.Length == 15)
{
readBuffer = readBuffer.Replace("\r\n", "");
OnMessageReceivedEvent(this, readBuffer);
readBuffer = String.Empty;
}
if (readBuffer.Length > 15 || (readBuffer.Length < 15 && readBuffer.Contains("\r\n")))
readBuffer = String.Empty;
}
}
catch (Exception ex)
{
if (socket != null)
OnExceptionOccuredEvent(this, ex);
}
}
}
I'm currently working on an audiobackend for my application, which runs on Mono/.NET. Therefore I found, that SFML is plattformindependent, so it suits. But there is no mp3 support because of licensing.
So I wanted to add up the mp3 capability for myself in C#. I use SFML.Net 2.1 with Mp3Sharp (http://www.robburke.net/mle/mp3sharp/). At first I tried this:
Mp3Stream stream = new Mp3Stream("D:\\tmp\\test.mp3");
Music music = new Music(stream);
music.play();
But that didn't work. Exception:
AudioCuesheetEditor.AudioBackend.AudioManagerSFML: FATAL | SFML.LoadingFailedException: Failed to load music from memory
at SFML.Audio.Music..ctor(Stream stream)
at AudioCuesheetEditor.AudioBackend.AudioManagerSFML.setMusic() in d:\tmp\AudioCuesheetEditor\src\AudioCuesheetEditor\AudioBackend\AudioManagerSFML.cs
So I thought about doing as it is done in the examples (https://github.com/LaurentGomila/SFML/wiki/Source:-MP3-Player):
I made a class SFMLMp3Stream which extends SoundStream:
public class SFMLMp3Stream : SoundStream
{
private Mp3Stream stream;
public SFMLMp3Stream()
{
stream = null;
}
public Boolean openFromFile(String _filename)
{
//TODO:Check file existence
stream = new Mp3Stream(_filename);
Initialize((uint)stream.ChannelCount,(uint) stream.Frequency);
return true;
}
#region implemented abstract members of SoundStream
protected override bool OnGetData(out short[] samples)
{
if (stream != null)
{
byte[] buffer = new byte[512];
short[] retVal = new short[512];
stream.Read(buffer,0,buffer.Length);
Buffer.BlockCopy(buffer,0,retVal,0,buffer.Length);
samples = retVal;
return true;
}
else
{
samples = null;
return false;
}
}
protected override void OnSeek(TimeSpan timeOffset)
{
if (stream != null)
{
stream.Seek((long)timeOffset.TotalMilliseconds, SeekOrigin.Current);
}
}
#endregion
}
When I try now this:
musicStream = new SFMLMp3Stream();
musicStream.openFromFile(this.objProgram.getObjCuesheet().getAudiofilePath(true));
music = new Music(musicStream);
I get the compiler error, that Music can not be initiatet from SFMLMp3Stream (because it is no string and no System.IO.Stream. How can I extend SFML for Mp3 usage? Has anybody done this so far?
Thanks for your help
Sven
I'm searching for a Streamclass which contains:
- a method for sending/receiving a byte-array
- a method for sending/receiving a string
The only Class I've found was NetworkStream. But the disadvantage with the NetworkStream-Class is, that if i want sending a string, i must befor convert this string into a byte-array and send this byte-array, because there is no method for sending strings directly.
And on the other side classes like Streamwriter have methods for sending/receiving strings, but there have no methods for sending/receiving a byte-array.
And if i try to combine these two Streamclasses like this:
TcpClient clientConnection = new TcpClient();
NetworkStream nws = clientConnection.GetStream();
StreamWriter sw = new StreamWriter(nws);
sw.writeLine("ABC");
sw.Flush();
nws.Write(byteArray, 0, lengthToSend);
i get a lot of strange errors (like byteArray will not receive on the other side completly), because i'm using here the same one stream in two different ways.
So, must i used NetworkStream-Class for my plan or exists there a better way?
I had the same problem,and the point is that the other side doesnt know what you are sending byte array or string so what i did is putting a header for each msg specially when dealing with serious server/client application coz you will have multiple data (user info, requesting info,replying info .. etc)
i am using streamwriter to send and streamreader to receive but i am also using threads
the connection remains open as long as the client is connected so i declare them once
here is a full example of my codes
public class Client
{
private StreamWriter swSender;
private StreamReader srReceiver;
private TcpClient tcpServer;
private Thread thrMessaging;
private string UserName = "UK";
private byte Tries = 0;
private bool Connected = false;
public void Connect()
{
if (!Connected)
{
IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
string User = localIPs[0].ToString();
string ServIP = "127.0.0.1";//change this to your server ip
InitializeConnection(ServIP, User);
}
else
{
CloseConnection("Disconnected at user's request.");
}
}
private void InitializeConnection(string ServIp, string User)
{
IPAddress ipAddr = IPAddress.Parse(ServIp);
tcpServer = new TcpClient();
try
{
tcpServer.Connect(ipAddr, 1986);//change that 1986 to your server port
}
catch
{
if (Connected) CloseConnection("");
MessageBox.Show("Connecteing to " + ServIp + "\r\nServer is Down ... Try nomber " + Tries); return;
}
Connected = true;
UserName = User;
swSender = new StreamWriter(tcpServer.GetStream());
swSender.WriteLine(User);
swSender.Flush();
thrMessaging = new Thread(new ThreadStart(ReceiveMessages));
thrMessaging.Start();
}
private void ReceiveMessages()
{
srReceiver = new StreamReader(tcpServer.GetStream());
string ConResponse = srReceiver.ReadLine();
if (ConResponse[0] == '1')
{
}
else
{
string Reason = "Not Connected: ";
Reason += ConResponse.Substring(2, ConResponse.Length - 2);
return;
}
while (Connected)
{
try
{
string NewMsg = srReceiver.ReadLine();
if (NewMsg != null && NewMsg != "")
PacketHandler.HandlePacket(NewMsg, this);
}
catch { }
}
}
public void CloseConnection(string Reason)
{
try
{
Connected = false;
swSender.Close();
srReceiver.Close();
tcpServer.Close();
}
catch { }
}
public void SendMessage(string Msg)
{
if (Msg.Length >= 1)
{
try
{
Tries++;
swSender.WriteLine(Msg);
swSender.Flush();
Tries = 0;
}
catch
{
if (Tries < 5)
{
try
{
CloseConnection("No connection made");
Connect();
}
catch { }
SendMessage(Msg);
}
else { MessageBox.Show("Connecting to server faild for 5 tries"); Tries = 0; }
}
}
}
then at the packet handler i do my handling to check what kind of data the client received
something like this
public static void HandlePacket(string MsgRec, Client Client)
{
string[] Info = MsgRec.Split('|');
string Type = Info[0];
if (Type == "")
{
return;
}
string subtype = Info[1];
int TLen = Type.Length + subtype.Length + 2;
string Data = MsgRec.Remove(0, TLen);//this is the main data the server sent
ushort PacketType = ushort.Parse(Type);
ushort SubType = ushort.Parse(subtype);
switch ((Structs.PacketType)PacketType)
{
case Structs.PacketType.Login:
{
//do your stuff here
break
}
case Structs.PacketType.Image:
{
//convert the Data back to byte array then get the image out from it
break
}
case Structs.PacketType.ByteArray:
{
//convert the Data back to byte array
break
}
}
}
i know its kinda messy and not the perfect way to do it , but it works for me
and remember that at the other side when sending something you need to add the packet type and subtype , or just any header with any splitter if u doin something simple
Finally : i think using Sockets and packets would be much easier if u are sending small packets length