Page History

Example with streamer and player on the same page

This example demonstrates how to publish a video stream while playing another one using the same web page.

Code of the example

The path to the source code of the example on WCS server is:

...

Here host is the address of the WCS server.

Work with code of the example

To analyze the code, let's take the version of file two_way_streaming.js with hash f437576d88a6e24add9b5337e66ad03ff18ecc3c, which is available here and can be downloaded with corresponding build 0.5.0.1894.

1. Initialization of the API. line 13API is initialized after loading the page. For Flash support, the path to SWF file is passed to the

Flashphoner.init() method. code

Flashphoner.init({flashMediaProviderSwfLocation: '../../../../media-provider.swf'});

2. Connection to server. line 33Connection to server is established when Connect button is clicked.

Flashphoner.createSession() code

Flashphoner.createSession({urlServer: url}).on(SESSION_STATUS.ESTABLISHED, function(session){
    setStatus("#connectStatus", session.status());
    onConnected(session);
}).on(SESSION_STATUS.DISCONNECTED, function(){
    setStatus("#connectStatus", SESSION_STATUS.DISCONNECTED);
    onDisconnected();
}).on(SESSION_STATUS.FAILED, function(){
    setStatus("#connectStatus", SESSION_STATUS.FAILED);
    onDisconnected();
});

Session is created with method createSession(). Callback function, which will be called in case of successfully established connection (status SESSION_STATUS.ESTABLISHED), is added.

3. Video streaming. line 118

...

3. Receiving the event confirming successful connection

ConnectionStatusEvent ESTABLISHED code

Flashphoner.createSession({urlServer: url}).on(SESSION_STATUS.ESTABLISHED, function(session){
    setStatus("#connectStatus", session.status());
    onConnected(session);
}).on(SESSION_STATUS.DISCONNECTED, function(){
    ...
}).on(SESSION_STATUS.FAILED, function(){
    ...
});

4. Video streaming.

session.createStream(), and function publish() is called to publish the stream. code

When stream is created, the following parameters are passed

...

session.createStream({
    name: streamName,
    display: localVideo,
    cacheLocalResources: true
    ...
}).on(STREAM_STATUS.PUBLISHING, function(stream)publish();

5. Receiving the event confirming successful streaming

StreamStatusEvent PUBLISHING code

session.createStream({
    setStatus("#publishStatus", STREAM_STATUS.PUBLISHING);name: streamName,
    display: localVideo,
    onPublishing(stream);cacheLocalResources: true
}).on(STREAM_STATUS.UNPUBLISHEDPUBLISHING, function(stream){
    setStatus("#publishStatus", STREAM_STATUS.UNPUBLISHEDPUBLISHING);
    onUnpublishedonPublishing(stream);
}).on(STREAM_STATUS.FAILEDUNPUBLISHED, function(){
    setStatus("#publishStatus", STREAM_STATUS.FAILED);
    onUnpublished();...
}).publish();

...

on(STREAM_STATUS.

...

FAILED

...

In the example, when STREAM_STATUS.PUBLISHING status is received, function onPublishing() of the example is called; and when STREAM_STATUS.UNPUBLISHED and STREAM_STATUS.FAILED statuses are received - function onUnpublished().
Those functions make appropriate changes in controls of the interface.

4. Stop of streaming. line 70

The following method is called to stop video streaming

stream.stop();

After calling the method, status STREAM_STATUS.UNPUBLISHED should arrive to confirm stop of streaming from the server side.

5. Playback of video stream. line 137

...

, function(){
    ...
}).publish();

6. Stream playback

session.createStream(), and function play() is called to play the stream code.

When stream is created, the following parameters are passed

• streamName - name of the stream (including the stream published on step above)
• remoteVideo - <div> element, in which the video playback will be displayed

session.createStream({
    name: streamName,
    display: remoteVideo
    ...
}).play();

7. Receiving the event confirming successful stream playback

StreamStatusEvent PLAYING code

session.createStream({
    name: streamName,
    display: remoteVideo
}).on(STREAM_STATUS.PLAYING, function(stream) {
    document.getElementById(stream.id()).addEventListener('resize', function(event){
        resizeVideo(event.target);
    });
    setStatus("#playStatus", stream.status());
    onPlaying(stream);
}).on(STREAM_STATUS.STOPPED, function() {
    setStatus("#playStatus", ...
}).on(STREAM_STATUS.STOPPED);FAILED, function() {
    onStopped();...
}).on(STREAM_STATUS.FAILED, function(play();

8. Stream playback stop

stream.stop() code

function onPlaying(stream) {
    setStatus$("#playBtn").text("#playStatus", STREAM_STATUS.FAILEDStop").off('click').click(function(){
        $(this).prop('disabled', true);
    onStopped    stream.stop();
    }).play(prop('disabled', false);

...

}

9. Receiving the event confirming successful playback stop

StreamStatusEvent STOPPED code

session.createStream({
    name: streamName,
    display: remoteVideo
}).on(STREAM_STATUS.PLAYING,

...

 function(stream) {
    ...
}).on(STREAM_STATUS.

...

STOPPED, function() {
    setStatus("#playStatus", STREAM_STATUS.STOPPED

...

);
    onStopped();
}).on(STREAM_STATUS.FAILED

...

6. Stop of playback. line 94

...

, function() {
    ...
}).play();

10. Streaming stop

stream.stop(). code

function onPublishing(stream) {
    $("#publishBtn").text("Stop").off('click').click(function(){
        $(this).prop('disabled', true);
		stream.stop();

...

    }).prop('disabled', false);
}

11. Receiving the event confirming successful streaming stop

StreamStatusEvent UNPUBLISHED code

session.createStream({
    name: streamName,
    display: localVideo,
    cacheLocalResources: true
}).on(STREAM_STATUS.PUBLISHING, function(stream){
    ...
}).on(STREAM_STATUS.UNPUBLISHED, function(){
    setStatus("#publishStatus", STREAM_STATUS.UNPUBLISHED);
    onUnpublished();
}).on(STREAM_STATUS.FAILED, function(){
    ...
}).publish();