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Implement video playback in layer.

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This commit is contained in:
Michael Jumper
2012-10-25 14:29:57 -07:00
parent ec0ea40b58
commit c6d12ebac0
1 changed files with 53 additions and 2 deletions
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55
guacamole-common-js/src/main/resources/layer.js
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@@ -256,8 +256,10 @@ Guacamole.Layer = function(width, height) {
* Unblocks this Task, allowing it to run.
*/
this.unblock = function() {
task.blocked = false;
handlePendingTasks();
if (task.blocked) {
task.blocked = false;
handlePendingTasks();
}
}
}
@@ -470,6 +472,55 @@ Guacamole.Layer = function(width, height) {
};
/**
* Plays the video at the specified URL within this layer. The video
* will be loaded automatically, and this and any future operations will
* wait for the video to finish loading. Future operations will not be
* executed until the video finishes playing.
*
* @param {String} mimetype The mimetype of the video to play.
* @param {Number} duration The duration of the video in milliseconds.
* @param {String} url The URL of the video to play.
*/
this.play = function(mimetype, duration, url) {
// Start loading the video
var video = document.createElement("video");
video.type = mimetype;
video.src = url;
// Main task - playing the video
var task = scheduleTask(function() {
video.play();
}, true);
// Lock which will be cleared after video ends
var lock = scheduleTask(null, true);
// Start copying frames when playing
video.addEventListener("play", function() {
function render_callback() {
displayContext.drawImage(video, 0, 0, width, height);
if (!video.ended)
window.setTimeout(render_callback, 20);
else
lock.unblock();
}
render_callback();
});
// Unblock future operations after an error
video.addEventListener("error", lock.unblock);
// Play video as soon as current tasks are complete, now that the
// lock has been set up.
task.unblock();
};
/**
* Run an arbitrary function as soon as currently pending operations
* are complete.