/// <summary>
/// Initialize the media element for playback
/// </summary>
/// <param name="streamConfig">Object containing stream configuration details</param>
void InitializeMediaPlayer(MoonlightStreamConfiguration streamConfig, AvStreamSource streamSource)
{
this._streamSource = streamSource;
// This code is based upon the MS FFmpegInterop project on GitHub
VideoEncodingProperties videoProps = VideoEncodingProperties.CreateH264();
videoProps.ProfileId = H264ProfileIds.High;
videoProps.Width = (uint)streamConfig.GetWidth();
videoProps.Height = (uint)streamConfig.GetHeight();
videoProps.Bitrate = (uint)streamConfig.GetBitrate();
_videoMss = new MediaStreamSource(new VideoStreamDescriptor(videoProps));
_videoMss.BufferTime = TimeSpan.Zero;
_videoMss.CanSeek = false;
_videoMss.Duration = TimeSpan.Zero;
_videoMss.SampleRequested += _videoMss_SampleRequested;
XAudio2 xaudio = new XAudio2();
MasteringVoice masteringVoice = new MasteringVoice(xaudio, 2, 48000);
WaveFormat format = new WaveFormat(48000, 16, 2);
// Set for low latency playback
StreamDisplay.RealTimePlayback = true;
// Render on the full window to avoid extra compositing
StreamDisplay.IsFullWindow = true;
// Disable built-in transport controls
StreamDisplay.AreTransportControlsEnabled = false;
StreamDisplay.SetMediaStreamSource(_videoMss);
AvStream.SetSourceVoice(new SourceVoice(xaudio, format));
}
/// <summary>
/// When the user presses "Start Streaming Steam", first check that they are paired
/// </summary>
public static async Task<StreamContext> StartStreaming(CoreDispatcher uiDispatcher, Computer computer, MoonlightStreamConfiguration streamConfig)
{
PairingManager p = new PairingManager(computer);
// If we can't get the pair state, return
bool? pairState = await p.QueryPairState();
if (!pairState.HasValue)
{
DialogUtils.DisplayDialog(uiDispatcher, "Pair state query failed", "Failed to start streaming");
return null;
}
// If we're not paired, return
if (pairState == false)
{
DialogUtils.DisplayDialog(uiDispatcher, "Device not paired", "Failed to start streaming");
return null;
}
// Lookup the desired app in the app list
// NOTE: This will go away when we have a proper app list
int appId = await LookupAppIdForApp(uiDispatcher, new NvHttp(computer.IpAddress), "Steam");
if (appId == 0)
{
// LookupAppIdForApp() handles displaying a failure dialog
return null;
}
return new StreamContext(computer, appId, streamConfig);
}
/// <summary>
/// Initialize the media element for playback
/// </summary>
/// <param name="streamConfig">Object containing stream configuration details</param>
void InitializeMediaPlayer(MoonlightStreamConfiguration streamConfig, AvStreamSource streamSource)
{
this._streamSource = streamSource;
_videoMss = new MediaStreamSource(new VideoStreamDescriptor(VideoEncodingProperties.CreateH264()));
_videoMss.BufferTime = TimeSpan.Zero;
_videoMss.CanSeek = false;
_videoMss.Duration = TimeSpan.Zero;
_videoMss.SampleRequested += _videoMss_SampleRequested;
XAudio2 xaudio = new XAudio2();
MasteringVoice masteringVoice = new MasteringVoice(xaudio, 2, 48000);
WaveFormat format = new WaveFormat(48000, 16, 2);
// Set for low latency playback
StreamDisplay.RealTimePlayback = true;
// Render on the full window to avoid extra compositing
StreamDisplay.IsFullWindow = true;
// Disable built-in transport controls
StreamDisplay.AreTransportControlsEnabled = false;
// Start playing right away
StreamDisplay.AutoPlay = true;
StreamDisplay.SetMediaStreamSource(_videoMss);
AvStream.SetSourceVoice(new SourceVoice(xaudio, format));
}
/// <summary>
/// Starts the connection by calling into Moonlight Common
/// </summary>
private async Task StartConnection(MoonlightStreamConfiguration streamConfig)
{
NvHttp nv = null;
await SetStateText("Resolving hostname...");
try
{
nv = new NvHttp(context.computer.IpAddress);
}
catch (ArgumentNullException)
{
stageFailureText = "Error resolving hostname";
ConnectionFailed();
return;
}
String serverIp = null;
try
{
serverIp = await nv.ResolveServerIPAddress();
}
catch (Exception)
{
stageFailureText = "Error resolving hostname";
ConnectionFailed();
return;
}
// Set up callbacks
MoonlightDecoderRenderer drCallbacks = new MoonlightDecoderRenderer(DrSetup, DrCleanup, DrSubmitDecodeUnit);
MoonlightAudioRenderer arCallbacks = new MoonlightAudioRenderer(ArInit, ArCleanup, ArPlaySample);
MoonlightConnectionListener clCallbacks = new MoonlightConnectionListener(ClStageStarting, ClStageComplete, ClStageFailed,
ClConnectionStarted, ClConnectionTerminated, ClDisplayMessage, ClDisplayTransientMessage);
// Launch Steam
await SetStateText("Launching Steam");
if (await StartOrResumeApp(nv, streamConfig) == false)
{
Debug.WriteLine("Can't find app");
stageFailureText = "Error launching App";
ConnectionFailed();
return;
}
// Call into Common to start the connection
Debug.WriteLine("Starting connection");
MoonlightCommonRuntimeComponent.StartConnection(serverIp, streamConfig, clCallbacks, drCallbacks, arCallbacks, serverMajorVersion);
if (stageFailureText != null)
{
Debug.WriteLine("Stage failed");
ConnectionFailed();
return;
}
else
{
ConnectionSuccess();
}
}
/// <summary>
/// Create start HTTP request
/// </summary>
private async Task<bool> StartOrResumeApp(NvHttp nv, MoonlightStreamConfiguration streamConfig)
{
XmlQuery serverInfo = new XmlQuery(nv.BaseUrl + "/serverinfo?uniqueid=" + nv.GetUniqueId());
string currentGameString = await serverInfo.ReadXmlElement("currentgame");
if (currentGameString == null)
{
return false;
}
string versionString = await serverInfo.ReadXmlElement("appversion");
if (versionString == null)
{
return false;
}
serverMajorVersion = Convert.ToInt32(versionString.Substring(0, 1));
byte[] aesIv = streamConfig.GetRiAesIv();
int riKeyId =
(int)(((aesIv[0] << 24) & 0xFF000000U) |
((aesIv[1] << 16) & 0xFF0000U) |
((aesIv[2] << 8) & 0xFF00U) |
(aesIv[3] & 0xFFU));
string riConfigString =
"&rikey=" + PairingCryptoHelpers.BytesToHex(streamConfig.GetRiAesKey()) +
"&rikeyid=" + riKeyId;
// Launch a new game if nothing is running
if (currentGameString == null || currentGameString.Equals("0"))
{
XmlQuery x = new XmlQuery(nv.BaseUrl + "/launch?uniqueid=" + nv.GetUniqueId() + "&appid=" + context.appId +
"&mode=" + streamConfig.GetWidth() + "x" + streamConfig.GetHeight() + "x" + streamConfig.GetFps() +
"&additionalStates=1&sops=1" + // FIXME: make sops configurable
riConfigString);
string sessionStr = await x.ReadXmlElement("gamesession");
if (sessionStr == null || sessionStr.Equals("0"))
{
return false;
}
return true;
}
else
{
// A game was already running, so resume it
// FIXME: Quit and relaunch if it's not the game we came to start
XmlQuery x = new XmlQuery(nv.BaseUrl + "/resume?uniqueid=" + nv.GetUniqueId() + riConfigString);
string resumeStr = await x.ReadXmlElement("resume");
if (resumeStr == null || resumeStr.Equals("0"))
{
return false;
}
return true;
}
}
/// <summary>
/// Executed when the user presses "Start Streaming Steam!"
/// </summary>
private async Task StreamButton_Click_Common()
{
Debug.WriteLine("Start Streaming button pressed");
selected = (Computer)computerPicker.SelectedItem;
// User hasn't selected a machine or selected a placeholder
if (selected == null || String.IsNullOrWhiteSpace(selected.IpAddress))
{
DialogUtils.DisplayDialog(this.Dispatcher, "No machine selected", "Streaming Failed");
}
else
{
// Stop enumerating machines while we're trying to check pair state
mDnsTimer.Stop();
byte[] aesKey = PairingCryptoHelpers.GenerateRandomBytes(16);
// GameStream only uses 4 bytes of a 16 byte IV. Go figure.
byte[] aesRiIndex = PairingCryptoHelpers.GenerateRandomBytes(4);
byte[] aesIv = new byte[16];
Array.ConstrainedCopy(aesRiIndex, 0, aesIv, 0, aesRiIndex.Length);
SettingsPage s = new SettingsPage();
MoonlightStreamConfiguration config = new MoonlightStreamConfiguration(
s.GetStreamWidth(),
s.GetStreamHeight(),
s.GetStreamFps(),
10000, // FIXME: Scale by resolution
1024,
aesKey, aesIv);
StreamContext context = await ConnectionManager.StartStreaming(this.Dispatcher, selected, config);
if (context != null)
{
this.Frame.Navigate(typeof(StreamFrame), context);
}
}
}
/// <summary>
/// When the user presses "Start Streaming Steam", first check that they are paired
/// </summary>
public static async Task <StreamContext> StartStreaming(CoreDispatcher uiDispatcher, Computer computer, MoonlightStreamConfiguration streamConfig)
{
PairingManager p = new PairingManager(computer);
// If we can't get the pair state, return
bool?pairState = await p.QueryPairState();
if (!pairState.HasValue)
{
DialogUtils.DisplayDialog(uiDispatcher, "Pair state query failed", "Failed to start streaming");
return(null);
}
// If we're not paired, return
if (pairState == false)
{
DialogUtils.DisplayDialog(uiDispatcher, "Device not paired", "Failed to start streaming");
return(null);
}
// Lookup the desired app in the app list
// NOTE: This will go away when we have a proper app list
int appId = await LookupAppIdForApp(uiDispatcher, new NvHttp(computer.IpAddress), "Steam");
if (appId == 0)
{
// LookupAppIdForApp() handles displaying a failure dialog
return(null);
}
return(new StreamContext(computer, appId, streamConfig));
}
public StreamContext(Computer computer, int appId, MoonlightStreamConfiguration streamConfig)
{
this.computer = computer;
this.appId = appId;
this.streamConfig = streamConfig;
}
public StreamContext(Computer computer, int appId, MoonlightStreamConfiguration streamConfig)
{
this.computer = computer;
this.appId = appId;
this.streamConfig = streamConfig;
}
/// <summary>
/// Executed when the user presses "Start Streaming Steam!"
/// </summary>
private async Task StreamButton_Click_Common()
{
Debug.WriteLine("Start Streaming button pressed");
selected = (Computer)computerPicker.SelectedItem;
// User hasn't selected a machine or selected a placeholder
if (selected == null || String.IsNullOrWhiteSpace(selected.IpAddress))
{
DialogUtils.DisplayDialog(this.Dispatcher, "No machine selected", "Streaming Failed");
}
else
{
// Stop enumerating machines while we're trying to check pair state
mDnsTimer.Stop();
byte[] aesKey = PairingCryptoHelpers.GenerateRandomBytes(16);
// GameStream only uses 4 bytes of a 16 byte IV. Go figure.
byte[] aesRiIndex = PairingCryptoHelpers.GenerateRandomBytes(4);
byte[] aesIv = new byte[16];
Array.ConstrainedCopy(aesRiIndex, 0, aesIv, 0, aesRiIndex.Length);
SettingsPage s = new SettingsPage();
MoonlightStreamConfiguration config = new MoonlightStreamConfiguration(
s.GetStreamWidth(),
s.GetStreamHeight(),
s.GetStreamFps(),
10000, // FIXME: Scale by resolution
1024,
aesKey, aesIv);
StreamContext context = await ConnectionManager.StartStreaming(this.Dispatcher, selected, config);
if (context != null)
{
this.Frame.Navigate(typeof(StreamFrame), context);
}
}
}
/// <summary>
/// Starts the connection by calling into Moonlight Common
/// </summary>
private async Task StartConnection(MoonlightStreamConfiguration streamConfig)
{
NvHttp nv = null;
await SetStateText("Resolving hostname...");
try
{
nv = new NvHttp(context.computer.IpAddress);
}
catch (ArgumentNullException)
{
stageFailureText = "Error resolving hostname";
ConnectionFailed();
return;
}
String serverIp = null;
try
{
serverIp = await nv.ResolveServerIPAddress();
}
catch (Exception)
{
stageFailureText = "Error resolving hostname";
ConnectionFailed();
return;
}
// Set up callbacks
MoonlightDecoderRenderer drCallbacks = new MoonlightDecoderRenderer(DrSetup, DrCleanup, DrSubmitDecodeUnit);
MoonlightAudioRenderer arCallbacks = new MoonlightAudioRenderer(ArInit, ArCleanup, ArPlaySample);
MoonlightConnectionListener clCallbacks = new MoonlightConnectionListener(ClStageStarting, ClStageComplete, ClStageFailed,
ClConnectionStarted, ClConnectionTerminated, ClDisplayMessage, ClDisplayTransientMessage);
// Launch Steam
await SetStateText("Launching Steam");
if (await StartOrResumeApp(nv, streamConfig) == false)
{
Debug.WriteLine("Can't find app");
stageFailureText = "Error launching App";
ConnectionFailed();
return;
}
// Call into Common to start the connection
Debug.WriteLine("Starting connection");
MoonlightCommonRuntimeComponent.StartConnection(serverIp, streamConfig, clCallbacks, drCallbacks, arCallbacks, serverMajorVersion);
if (stageFailureText != null)
{
Debug.WriteLine("Stage failed");
ConnectionFailed();
return;
}
else
{
ConnectionSuccess();
}
}
/// <summary>
/// Create start HTTP request
/// </summary>
private async Task <bool> StartOrResumeApp(NvHttp nv, MoonlightStreamConfiguration streamConfig)
{
XmlQuery serverInfo = new XmlQuery(nv.BaseUrl + "/serverinfo?uniqueid=" + nv.GetUniqueId());
string currentGameString = await serverInfo.ReadXmlElement("currentgame");
if (currentGameString == null)
{
return(false);
}
string versionString = await serverInfo.ReadXmlElement("appversion");
if (versionString == null)
{
return(false);
}
serverMajorVersion = Convert.ToInt32(versionString.Substring(0, 1));
byte[] aesIv = streamConfig.GetRiAesIv();
int riKeyId =
(int)(((aesIv[0] << 24) & 0xFF000000U) |
((aesIv[1] << 16) & 0xFF0000U) |
((aesIv[2] << 8) & 0xFF00U) |
(aesIv[3] & 0xFFU));
string riConfigString =
"&rikey=" + PairingCryptoHelpers.BytesToHex(streamConfig.GetRiAesKey()) +
"&rikeyid=" + riKeyId;
// Launch a new game if nothing is running
if (currentGameString == null || currentGameString.Equals("0"))
{
XmlQuery x = new XmlQuery(nv.BaseUrl + "/launch?uniqueid=" + nv.GetUniqueId() + "&appid=" + context.appId +
"&mode=" + streamConfig.GetWidth() + "x" + streamConfig.GetHeight() + "x" + streamConfig.GetFps() +
"&additionalStates=1&sops=1" + // FIXME: make sops configurable
riConfigString);
string sessionStr = await x.ReadXmlElement("gamesession");
if (sessionStr == null || sessionStr.Equals("0"))
{
return(false);
}
return(true);
}
else
{
// A game was already running, so resume it
// FIXME: Quit and relaunch if it's not the game we came to start
XmlQuery x = new XmlQuery(nv.BaseUrl + "/resume?uniqueid=" + nv.GetUniqueId() + riConfigString);
string resumeStr = await x.ReadXmlElement("resume");
if (resumeStr == null || resumeStr.Equals("0"))
{
return(false);
}
return(true);
}
}
/// <summary>
/// Initialize the media element for playback
/// </summary>
/// <param name="streamConfig">Object containing stream configuration details</param>
void InitializeMediaPlayer(MoonlightStreamConfiguration streamConfig, AvStreamSource streamSource)
{
this._streamSource = streamSource;
// This code is based upon the MS FFmpegInterop project on GitHub
VideoEncodingProperties videoProps = VideoEncodingProperties.CreateH264();
videoProps.ProfileId = H264ProfileIds.High;
videoProps.Width = (uint)streamConfig.GetWidth();
videoProps.Height = (uint)streamConfig.GetHeight();
videoProps.Bitrate = (uint)streamConfig.GetBitrate();
_videoMss = new MediaStreamSource(new VideoStreamDescriptor(videoProps));
_videoMss.BufferTime = TimeSpan.Zero;
_videoMss.CanSeek = false;
_videoMss.Duration = TimeSpan.Zero;
_videoMss.SampleRequested += _videoMss_SampleRequested;
XAudio2 xaudio = new XAudio2();
MasteringVoice masteringVoice = new MasteringVoice(xaudio, 2, 48000);
WaveFormat format = new WaveFormat(48000, 16, 2);
// Set for low latency playback
StreamDisplay.RealTimePlayback = true;
// Render on the full window to avoid extra compositing
StreamDisplay.IsFullWindow = true;
// Disable built-in transport controls
StreamDisplay.AreTransportControlsEnabled = false;
StreamDisplay.SetMediaStreamSource(_videoMss);
AvStream.SetSourceVoice(new SourceVoice(xaudio, format));
}
