/// <summary>
/// Start Playback
/// </summary>
/// <param name="res"></param>
public void InitPlayback(VideoBuffer videoBuffer) {
if (videoBuffer == null) {
throw new ArgumentNullException("videoBufferDescription");
}
VerifyAccess();
TimeSpan renderinterval;
try {
int fps = AppDefaults.visualSettings.ui_video_rendering_fps;
fps = (fps <= 0 || fps > 100) ? 100 : fps;
renderinterval = TimeSpan.FromMilliseconds(1000 / fps);
} catch {
renderinterval = TimeSpan.FromMilliseconds(1000 / 30);
}
var cancellationTokenSource = new CancellationTokenSource();
renderSubscription.Disposable = Disposable.Create(() => {
cancellationTokenSource.Cancel();
});
var bitmap = PrepareForRendering(videoBuffer);
var cancellationToken = cancellationTokenSource.Token;
var dispatcher = Application.Current.Dispatcher;
var renderingTask = Task.Factory.StartNew(() => {
var statistics = new CircularBuffer<long>(100);
using (videoBuffer.Lock()) {
try {
//start rendering loop
while (!cancellationToken.IsCancellationRequested) {
using (var processingEvent = new ManualResetEventSlim(false)) {
dispatcher.BeginInvoke(() => {
using (Disposable.Create(() => processingEvent.Set())) {
if (!cancellationToken.IsCancellationRequested) {
//update statisitc info
statistics.Enqueue(Stopwatch.GetTimestamp());
//evaluate averange rendering fps
var ticksEllapsed = statistics.last - statistics.first;
double avgFps = 0;
if (ticksEllapsed > 0) {
avgFps = ((double)statistics.length * (double)Stopwatch.Frequency) / (double)ticksEllapsed;
}
//render farme to screen
DrawFrame(bitmap, videoBuffer, avgFps);
}
}
});
processingEvent.Wait(cancellationToken);
}
cancellationToken.WaitHandle.WaitOne(renderinterval);
}
} catch (OperationCanceledException) {
//swallow exception
} catch (Exception error) {
dbg.Error(error);
}
}
}, cancellationToken);
}
private WriteableBitmap PrepareForRendering(VideoBuffer videoBuffer) {
PixelFormat pixelFormat;
if (videoBuffer.pixelFormat == PixFrmt.rgb24) {
pixelFormat = PixelFormats.Rgb24;
} else if (videoBuffer.pixelFormat == PixFrmt.bgra32) {
pixelFormat = PixelFormats.Bgra32;
} else if (videoBuffer.pixelFormat == PixFrmt.bgr24) {
pixelFormat = PixelFormats.Bgr24;
} else {
throw new Exception("unsupported pixel format");
}
var bitmap = new WriteableBitmap(
videoBuffer.width, videoBuffer.height,
96, 96,
pixelFormat, null
);
_imgVIew.Source = bitmap;
return bitmap;
}
private void DrawFrame(WriteableBitmap bitmap, VideoBuffer videoBuffer, double averangeFps) {
VerifyAccess();
if (isPaused) {
return;
}
bitmap.Lock();
try {
using (var ptr = videoBuffer.Lock()) {
bitmap.WritePixels(
new Int32Rect(0, 0, videoBuffer.width, videoBuffer.height),
ptr.value, videoBuffer.size, videoBuffer.stride,
0, 0
);
}
} finally {
bitmap.Unlock();
}
fpsCaption.Text = averangeFps.ToString("F1");
}
public void SetVideoBuffer(VideoBuffer videoBuffer)
{
playerTask.videoBuffer = videoBuffer;
}
void VideoStartup(StreamInfoArgs args) {//, string profToken) {
vidBuff = new VideoBuffer((int)args.sourceResolution.Width, (int)args.sourceResolution.Height);
//var playerAct = container.Resolve<IVideoPlayerActivity>();
////profileToken: profToken,
//var model = new VideoPlayerActivityModel(
// showStreamUrl: false,
// streamSetup: new StreamSetup() {
// Stream = StreamType.RTPUnicast,
// Transport = new Transport() {
// Protocol = AppDefaults.visualSettings.Transport_Type,
// Tunnel = null
// }
// }
//);
//disposables.Add(
// container.RunChildActivity(player, model, (c, m) => playerAct.Run(c, m))
//);
VideoPlayerView playview = new VideoPlayerView();
disposables.Add(playview);
player.Child = playview;
playview.Init(new VideoPlayerView.Model(
streamSetup: args.streamSetup,
mediaUri: new MediaUri() {
uri = args.streamUri
},
encoderResolution: new VideoResolution() {
height = (int)args.sourceResolution.Height,
width = (int)args.sourceResolution.Width
},
isUriEnabled: false,
metadataReceiver: null
));
}
private void DrawFrame(WriteableBitmap bitmap, VideoBuffer videoBuffer, PlaybackStatistics statistics) {
VerifyAccess();
if (isPaused) {
return;
}
using (var md = videoBuffer.Lock()) {
// internally calls lock\unlock, uses MILUtilities.MILCopyPixelBuffer
bitmap.WritePixels(
new Int32Rect(0, 0, videoBuffer.width, videoBuffer.height),
md.value.scan0Ptr, videoBuffer.size, videoBuffer.stride,
0, 0
);
}
renderingFps.Text = String.Format("rendering fps: {0:F1}", statistics.avgRenderingFps);
decodingFps.Text = String.Format("decoding fps: {0:F1}", statistics.avgDecodingFps);
noSignalPanel.Visibility =
statistics.isNoSignal ? Visibility.Visible : Visibility.Hidden;
}
public void SetVideoBuffer(VideoBuffer videoBuffer) {
playerTask.videoBuffer = videoBuffer;
}
/// <summary>
/// Initiate rendering loop
/// </summary>
/// <param name="videoBuffer"></param>
public void InitPlayback(VideoBuffer videoBuffer) {
if (videoBuffer == null) {
throw new ArgumentNullException("videoBufferDescription");
}
VerifyAccess();
TimeSpan renderinterval;
try {
int fps = AppDefaults.visualSettings.ui_video_rendering_fps;
fps = (fps <= 0 || fps > 100) ? 100 : fps;
renderinterval = TimeSpan.FromMilliseconds(1000 / fps);
} catch {
renderinterval = TimeSpan.FromMilliseconds(1000 / 30);
}
var cancellationTokenSource = new CancellationTokenSource();
renderSubscription.Disposable = Disposable.Create(() => {
cancellationTokenSource.Cancel();
});
var bitmap = PrepareForRendering(videoBuffer);
var cancellationToken = cancellationTokenSource.Token;
var dispatcher = this.Dispatcher; //Application.Current.Dispatcher;
var renderingTask = Task.Factory.StartNew(() => {
var statistics = PlaybackStatistics.Start();
using (videoBuffer.Lock()) {
try {
//start rendering loop
while (!cancellationToken.IsCancellationRequested) {
using (var processingEvent = new ManualResetEventSlim(false)) {
dispatcher.BeginInvoke(() => {
using (Disposable.Create(() => processingEvent.Set())) {
if (!cancellationToken.IsCancellationRequested) {
//update statisitc info
statistics.Update(videoBuffer);
//render farme to screen
DrawFrame(bitmap, videoBuffer, statistics);
}
}
});
processingEvent.Wait(cancellationToken);
}
cancellationToken.WaitHandle.WaitOne(renderinterval);
}
} catch (OperationCanceledException) {
//swallow exception
} catch (Exception error) {
dbg.Error(error);
}
}
}, cancellationToken);
}
public void Update(VideoBuffer videoBuffer) {
//update rendering times history
renderTimes.Enqueue(Stopwatch.GetTimestamp());
//evaluate averange rendering fps
avgRenderingFps = CalculateAvgFpsFromTimes(renderTimes);
//update no signal indicator
using (var md = videoBuffer.Lock()) {
signal = md.value.signal;
md.value.signal = 0;
}
UpdateNoSignal();
//evaluate averange rendering fps
avgDecodingFps = CalculateAvgFpsFromTimes(decodeTimes);
}
void VideoStartup(Model model) {
player = new HostedPlayer();
var res = model.encoderResolution;
videoBuff = new VideoBuffer(res.width, res.height);
player.SetVideoBuffer(videoBuff);
var account = AccountManager.Instance.CurrentAccount;
UserNameToken utoken = null;
if (!account.IsAnonymous) {
utoken = new UserNameToken(account.Name, account.Password);
}
if (model.metadataReceiver != null) {
player.SetMetadataReciever(model.metadataReceiver);
}
MediaStreamInfo.Transport transp;
switch (model.streamSetup.transport.protocol) {
case TransportProtocol.http:
transp = MediaStreamInfo.Transport.Http;
break;
case TransportProtocol.rtsp:
transp = MediaStreamInfo.Transport.Tcp;
break;
default:
transp = MediaStreamInfo.Transport.Udp;
break;
}
MediaStreamInfo mstrInfo = new MediaStreamInfo(model.mediaUri.uri, transp, utoken);
disposables.Add(player.Play(mstrInfo, this));
InitPlayback(videoBuff);
}
void VideoStartup(Model model, VideoResolution resolution) {
//subscribe to metadata
IMetadataReceiver metadataReceiver = null;
if (AppDefaults.visualSettings.EnableGraphicAnnotation) {
string vaConfToken = model.engineConfToken;
var eventMetadataProcessor = new EventMetadataProcessor();
//eventMetadataProcessor.Processors.Add(new ObjectMotionMetadataProcessor(null, vaConfToken, movingObjectsHolder.EntityInitialized, movingObjectsHolder.EntityChanged, movingObjectsHolder.EntityDeleted));
eventMetadataProcessor.Processors.Add(new MotionAlarmMetadataProcessor(null, vaConfToken, alarmsHolder.EntityInitialized, alarmsHolder.EntityChanged, alarmsHolder.EntityDeleted));
eventMetadataProcessor.Processors.Add(new RegionMotionAlarmMetadataProcessor(null, vaConfToken, alarmsHolder.EntityInitialized, alarmsHolder.EntityChanged, alarmsHolder.EntityDeleted));
eventMetadataProcessor.Processors.Add(new LoiteringAlarmMetadataProcessor(null, vaConfToken, alarmsHolder.EntityInitialized, alarmsHolder.EntityChanged, alarmsHolder.EntityDeleted));
eventMetadataProcessor.Processors.Add(new AbandonedItemAlarmMetadataProcessor(null, vaConfToken, alarmsHolder.EntityInitialized, alarmsHolder.EntityChanged, alarmsHolder.EntityDeleted));
eventMetadataProcessor.Processors.Add(new TripwireAlarmMetadataProcessor(null, vaConfToken, alarmsHolder.EntityInitialized, alarmsHolder.EntityChanged, alarmsHolder.EntityDeleted));
eventMetadataProcessor.Processors.Add(new TamperingDetectorAlarmMetadataProcessor(null, vaConfToken, alarmsHolder.EntityInitialized, alarmsHolder.EntityChanged, alarmsHolder.EntityDeleted));
var sceneMetadataProcessor = new SceneMetadataProcessor(movingObjectsHolder.EntityInitialized, movingObjectsHolder.EntityChanged, movingObjectsHolder.EntityDeleted);
var metadataProcessor = new MetadataProcessor(eventMetadataProcessor, sceneMetadataProcessor);
metadataReceiver = new MetadataFramer(metadataProcessor.Process);
}
vidBuff = new VideoBuffer(resolution.width, resolution.height);
var streamSetup = new StreamSetup() {
transport = new Transport() {
protocol = AppDefaults.visualSettings.Transport_Type
}
};
VideoPlayerView playview = new VideoPlayerView();
disposables.Add(playview);
player.Child = playview;
playview.Init(new VideoPlayerView.Model(
streamSetup: streamSetup,
mediaUri: new MediaUri() {
uri = model.uri
},
encoderResolution: new VideoResolution() {
height = resolution.height,
width = resolution.width
},
isUriEnabled: false, //TODO if true then annotation is not positioned correctly
metadataReceiver: metadataReceiver
));
uriString.Visibility = System.Windows.Visibility.Visible;
uriString.Text = model.uri;
}
void VideoStartup(StreamInfoArgs args) {//, string profToken) {
vidBuff = new VideoBuffer((int)args.sourceResolution.Width, (int)args.sourceResolution.Height);
VideoPlayerView playview = new VideoPlayerView();
disposables.Add(playview);
player.Child = playview;
playview.Init(new VideoPlayerView.Model(
streamSetup: args.streamSetup,
mediaUri: new MediaUri() {
uri = args.streamUri
},
encoderResolution: new VideoResolution() {
height = (int)args.sourceResolution.Height,
width = (int)args.sourceResolution.Width
},
isUriEnabled: false,
metadataReceiver: null
));
}
