/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IDefault page)
{
// http://blog.teamtreehouse.com/accessing-the-device-camera-with-getusermedia
// http://stackoverflow.com/questions/11539689/why-localstreams-contains-localmediastream-and-remotestreams-contains-mediastrea
// https://developer.mozilla.org/en-US/docs/Web/API/Navigator.getUserMedia
// http://neave.github.io/face-detection/
var navigator = (NavigatorUserMedia)(object)Native.window.navigator;
var successCallback =
new Action <LocalMediaStream>(
localMediaStream =>
{
Console.WriteLine("got video");
//var src = (string)new IFunction("return window.URL.createObjectURL(this);").apply(localMediaStream);
var v = new IHTMLVideo {
src = localMediaStream.ToObjectURL()
}.AttachToDocument();
v.play();
}
);
var errorCallback =
new Action <NavigatorUserMediaError>(
e =>
{
// restart on error? :P
Native.window.alert("no video: " + new { e.code });
}
);
//var a = 1;
//var c = new MediaStreamConstraints { video = a == 1, audio = a == 0 };
//var o = new IFunction("return {video: true};").apply(null);
navigator.webkitGetUserMedia(
new { video = true, audio = false },
successCallback: IFunction.OfDelegate(
successCallback
),
errorCallback: IFunction.OfDelegate(
errorCallback
)
);
@"Hello world".ToDocumentTitle();
// Send data from JavaScript to the server tier
service.WebMethod2(
@"A string from JavaScript.",
value => value.ToDocumentTitle()
);
}
/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IApp page)
{
// http://www.brucelawson.co.uk/2012/specifying-which-camera-in-getusermedia/
// https://groups.google.com/forum/#!topic/discuss-webrtc/xLBdsLz_Mbw
// http://stackoverflow.com/questions/15322622/using-multiple-usb-cameras-with-web-rtc
// dont we have async available?
Native.window.navigator.getUserMedia(
stream =>
{
// getUserMedia error { code = , message = , name = DevicesNotFoundError }
var v = new IHTMLVideo {
src = stream.ToObjectURL()
};
v.AttachToDocument();
v.play();
new IHTMLButton {
innerText = "record frame"
}.AttachToDocument().onclick +=
delegate
{
// Uncaught IndexSizeError: Index or size was negative, or greater than the allowed value.
var c = new CanvasRenderingContext2D(v.clientWidth, v.clientHeight);
c.drawImage(
v, 0, 0, c.canvas.width, c.canvas.height
);
var bytes = c.bytes;
c.canvas.AttachToDocument();
};
new IHTMLButton {
innerText = "record gif"
}.AttachToDocument().WhenClicked(
async btn =>
{
btn.disabled = true;
var frames = new List <byte[]>();
var x = v.clientWidth;
var y = v.clientHeight;
//new Timer(
// async tt =>
// {
btn.innerText = "rec " + new { frames.Count }.ToString();
//while (frames.Count < 60)
//while (frames.Count < 20)
while (frames.Count < 2)
// works with two frames.
// are we logging too much data?
// cant we hop to another thread in bytes instead yet?
// https://sites.google.com/a/jsc-solutions.net/work/knowledge-base/15-dualvr/20160108
// are we encoding grame bytes as base64?
{
await Task.Delay(1000 / 5);
btn.innerText = new { frames.Count }.ToString();
var bytes = v.bytes;
Console.WriteLine(new { bytes.Length });
// script: error JSC1000: No implementation found for this native method, please implement
// [System.Threading.Tasks.TaskFactory`1.
// StartNew(, System.Object, System.Threading.CancellationToken, System.Threading.Tasks.TaskCreationOptions, System.Threading.Tasks.TaskScheduler)]
frames.Add(bytes);
}
Console.WriteLine("encoding!");
var e = new Stopwatch();
e.Start();
// crashes the browser why???
var src = await new GIFEncoderWorker(
x,
y,
delay: 1000 / 10,
frames: frames,
AtFrame:
async index =>
{
btn.innerText = new { index, frames.Count }.ToString();
if (index == frames.Count - 1)
{
btn.style.color = "blue";
await Task.Delay(800);
btn.style.color = "";
btn.innerText = "record gif";
}
}
);
Console.WriteLine("done! " + new { e.Elapsed });
new IHTMLImage {
src = src
}.AttachToDocument();
btn.disabled = false;
btn.title = new { e.Elapsed, src.Length }.ToString();
}
);
}
);
}
/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IApp page)
{
Native.document.body.Clear();
Native.document.body.style.margin = "0px";
Native.document.body.style.padding = "0px";
// http://stackoverflow.com/questions/11294836/streaming-mp4-with-vlc-to-html-browser
// In XHTML, attribute minimization is forbidden, and the controls attribute must be defined as <video controls="controls">.
// ogg wont show up on gearvr?
//var v = new IHTMLVideo { src = "http://192.168.1.12:8080/x.ogg", controls = true }.AttachToDocument();
// chrome displays 1 still and crashes on webm play. vlc shows black.
// gearvr stays white.
//var v = new IHTMLVideo { src = "http://192.168.1.12:8080/x.webm", controls = true }.AttachToDocument();
// chrome stays black.
var v = new IHTMLVideo {
src = "http://192.168.1.12:8080/x.mp4", controls = true
}.AttachToDocument();
// this works in gearvr!
//var v = new IHTMLVideo { src = "https://broken-links.com/tests/media/BigBuck.webm", controls = true }.AttachToDocument();
//var v = new IHTMLVideo { src = "https://broken-links.com/tests/media/BigBuck.theora.ogv", controls = true }.AttachToDocument();
// run in console session?
// vlc goes crazy!
// "C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" –no-sse2 –no-sse41 -vvv "X:\media\Abraham Hicks - Is There Value In Being Vulnerable Or Open (2014).mp4" --sout '#transcode{vcodec=VP80,vb=800,scale=1,acodec=vorbis,ab=128,channels=2}:standard{access=http,mux="ffmpeg{mux=webm}",dst=192.168.1.12:8080/x.webm}'
// "X:\util\vlc-2.2.1-win32\vlc-2.2.1\vlc.exe" --intf dummy --verbose -vvv "X:\media\Abraham Hicks - Is There Value In Being Vulnerable Or Open (2014).mp4" vlc://quit --sout '#transcode{vcodec=VP80,vb=800,scale=1,acodec=vorbis,ab=128,channels=2}:standard{access=http,mux="ffmpeg{mux=webm}",dst=192.168.1.12:8080/x.webm}'
// "X:\util\vlc-2.2.1-win32\vlc-2.2.1\vlc.exe" --no-loop --intf dummy --verbose -vvv "X:\media\Abraham Hicks - Is There Value In Being Vulnerable Or Open (2014).mp4" --sout '#transcode{vcodec=VP80,vb=800,scale=1,acodec=vorbis,ab=128,channels=2}:standard{access=http,mux="ffmpeg{mux=webm}",dst=192.168.1.12:8080/x.webm}'
// http://stackoverflow.com/questions/5087687/howto-encode-webm-using-command-line-vlc
// [0276ac3c] core input error: cannot start stream output instance, aborting
//[006a75f4] stream_out_standard stream out error: no mux specified or found by extension
// cvlc my_first_video.avi –sout “#transcode{vcodec=VP80,vb=800,scale=1,acodec=vorbis,ab=128,channels=2}:std{access=file,mux=”ffmpeg{mux=webm}”,dst=my_first_video.webm}”
//(note:
//[02130d24] dummy interface: VLC media player - 2.2.1 Terry Pratchett (Weatherwax)
//[02130d24] dummy interface: Copyright © 1996-2015 the VideoLAN team
//[02130d24] dummy interface:
//Warning: if you cannot access the GUI anymore, open a command-line window, go to the directory where you installed VLC and run "vlc -I qt"
//[02130d24] dummy interface: using the dummy interface module...
//[0218d6a4] stream_out_standard stream out error: no mux specified or found by extension
//[0218d60c] core stream output error: stream chain failed for `standard{mux="",access="'#transcode{vcodec=VP80,vb=800,scale=1,acodec=vorbis,ab=128,channels=2}",dst="standard{access=http,mux=ffmpeg{mux=webm},dst=192.168.1.12:8080/x.webm}'"}'
//[0213cc3c] core input error: cannot start stream output instance, aborting
// https://www.maketecheasier.com/mastering-vlc-via-the-command-line-linux/
// http://alien.slackbook.org/blog/vlc-and-creating-webm-video/
//What the VLC graphical interface can not yet do, is allow you to encode WebM video. Lucky for us, VLC has a command-line interface as well, with a humongous amount of options whose learning curve is even steeper than that of vi 😉
//The VLC command-line allows to encode/transcode WebM video! Want to try it out?
// view-source:https://broken-links.com/tests/video/
// <video id="video" autobuffer height="240" poster="../images/bbb_poster-360x240.jpg" width="360">
// <source src="../media/BigBuck.m4v">
// <source src="../media/BigBuck.webm" type="video/webm">
// <source src="../media/BigBuck.theora.ogv" type="video/ogg">
//</video>
// Streaming / Transcoding failed:
//VLC could not open the mp4a audio encoder.
// https://www.broken-links.com/2010/07/30/encoding-video-for-android/
// https://broken-links.com/tests/video/comparison.html
//new IStyle(v)
//{
// position = IStyle.PositionEnum.@fixed,
// left = "0px",
// top = "0px",
// right = "0px",
// bottom = "0px",
//};
new IStyle(v)
{
position = IStyle.PositionEnum.absolute,
left = "0px",
top = "0px",
width = "100%",
height = "100%",
};
// would jsc be able to be the overlay buffer?
}
