GUAC-1354: Add base Guacamole.VideoPlayer (no codec implementations at present). Allow custom video codec implementations via onvideo callback on Guacamole.Client.

This commit is contained in:
Michael Jumper
2015-10-18 22:07:01 -07:00
parent b9a97646ee
commit 3057db60ff
3 changed files with 165 additions and 32 deletions

View File

@@ -85,6 +85,14 @@ Guacamole.Client = function(tunnel) {
*/
var audioPlayers = {};
/**
* All video players currently in use by the client. Initially, this will
* be empty, but video players may be allocated by the server upon request.
*
* @type Object.<Number, Guacamole.VideoPlayer>
*/
var videoPlayers = {};
// No initial parsers
var parsers = [];
@@ -459,6 +467,30 @@ Guacamole.Client = function(tunnel) {
*/
this.onaudio = null;
/**
* Fired when a video stream is created. The stream provided to this event
* handler will contain its own event handlers for received data.
*
* @event
* @param {Guacamole.InputStream} stream
* The stream that will receive video data from the server.
*
* @param {Guacamole.Display.VisibleLayer} layer
* The destination layer on which the received video data should be
* played. It is the responsibility of the Guacamole.VideoPlayer
* implementation to play the received data within this layer.
*
* @param {String} mimetype
* The mimetype of the video data which will be received.
*
* @return {Guacamole.VideoPlayer}
* An object which implements the Guacamole.VideoPlayer interface and
* has been initialied to play the data in the provided stream, or null
* if the built-in video players of the Guacamole client should be
* used.
*/
this.onvideo = null;
/**
* Fired when the clipboard of the remote client is changing.
*
@@ -1197,39 +1229,29 @@ Guacamole.Client = function(tunnel) {
var stream_index = parseInt(parameters[0]);
var layer = getLayer(parseInt(parameters[1]));
var mimetype = parameters[2];
var duration = parseFloat(parameters[3]);
// Create stream
// Create stream
var stream = streams[stream_index] =
new Guacamole.InputStream(guac_client, stream_index);
// Assemble entire stream as a blob
var blob_reader = new Guacamole.BlobReader(stream, mimetype);
// Get player instance via callback
var videoPlayer = null;
if (guac_client.onvideo)
videoPlayer = guac_client.onvideo(stream, layer, mimetype);
// Play video once finished
blob_reader.onend = function() {
// If unsuccessful, try to use a default implementation
if (!videoPlayer)
videoPlayer = Guacamole.VideoPlayer.getInstance(stream, layer, mimetype);
// Read data from blob from stream
var reader = new FileReader();
reader.onload = function() {
// If we have successfully retrieved an video player, send success response
if (videoPlayer) {
videoPlayers[stream_index] = videoPlayer;
guac_client.sendAck(stream_index, "OK", 0x0000);
}
var binary = "";
var bytes = new Uint8Array(reader.result);
// Produce binary string from bytes in buffer
for (var i=0; i<bytes.byteLength; i++)
binary += String.fromCharCode(bytes[i]);
// Play video
layer.play(mimetype, duration, "data:" + mimetype + ";base64," + window.btoa(binary));
};
reader.readAsArrayBuffer(blob_reader.getBlob());
};
// Send success response
tunnel.sendMessage("ack", stream_index, "OK", 0x0000);
// Otherwise, mimetype must be unsupported
else
guac_client.sendAck(stream_index, "BAD TYPE", 0x030F);
}