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Unified Diff: remoting/webapp/crd/js/media_source_renderer.js

Issue 825793002: Remove MediaStream renderer from the webapp. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 6 years ago
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Index: remoting/webapp/crd/js/media_source_renderer.js
diff --git a/remoting/webapp/crd/js/media_source_renderer.js b/remoting/webapp/crd/js/media_source_renderer.js
deleted file mode 100644
index b9cc24c611ebcc4daf311ec46eae1851afa867db..0000000000000000000000000000000000000000
--- a/remoting/webapp/crd/js/media_source_renderer.js
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-'use strict';
-
-/** @suppress {duplicate} */
-var remoting = remoting || {};
-
-/**
- * @param {HTMLMediaElement} videoTag <video> tag to render to.
- * @constructor
- */
-remoting.MediaSourceRenderer = function(videoTag) {
- /** @type {HTMLMediaElement} */
- this.video_ = videoTag;
-
- /** @type {MediaSource} */
- this.mediaSource_ = null;
-
- /** @type {SourceBuffer} */
- this.sourceBuffer_ = null;
-
- /** @type {!Array.<ArrayBuffer>} Queue of pending buffers that haven't been
- * processed. A null element indicates that the SourceBuffer can be reset
- * because the following buffer contains a keyframe. */
- this.buffers_ = [];
-
- this.lastKeyFramePos_ = 0;
-}
-
-/**
- * @param {string} format Format of the stream.
- */
-remoting.MediaSourceRenderer.prototype.reset = function(format) {
- // Reset the queue.
- this.buffers_ = [];
-
- // Create a new MediaSource instance.
- this.sourceBuffer_ = null;
- this.mediaSource_ = new MediaSource();
- this.mediaSource_.addEventListener('sourceopen',
- this.onSourceOpen_.bind(this, format));
- this.mediaSource_.addEventListener('sourceclose', function(e) {
- console.error("MediaSource closed unexpectedly.");
- });
- this.mediaSource_.addEventListener('sourceended', function(e) {
- console.error("MediaSource ended unexpectedly.");
- });
-
- // Start playback from new MediaSource.
- this.video_.src =
- /** @type {string} */(
- window.URL.createObjectURL(/** @type {!Blob} */(this.mediaSource_)));
- this.video_.play();
-}
-
-/**
- * @param {string} format
- * @private
- */
-remoting.MediaSourceRenderer.prototype.onSourceOpen_ = function(format) {
- this.sourceBuffer_ =
- this.mediaSource_.addSourceBuffer(format);
-
- this.sourceBuffer_.addEventListener(
- 'updateend', this.processPendingData_.bind(this));
- this.processPendingData_();
-}
-
-/**
- * @private
- */
-remoting.MediaSourceRenderer.prototype.processPendingData_ = function() {
- if (this.sourceBuffer_) {
- while (this.buffers_.length > 0 && !this.sourceBuffer_.updating) {
- var buffer = /** @type {ArrayBuffer} */ this.buffers_.shift();
- if (buffer == null) {
- // Remove data from the SourceBuffer from the beginning to the previous
- // key frame. By default Chrome buffers up to 150MB of data. We never
- // need to seek the stream, so it doesn't make sense to keep any of that
- // data.
- if (this.sourceBuffer_.buffered.length > 0) {
- // TODO(sergeyu): Check currentTime to make sure that the current
- // playback position is not being removed. crbug.com/398290 .
- if (this.lastKeyFramePos_ > this.sourceBuffer_.buffered.start(0)) {
- this.sourceBuffer_.remove(this.sourceBuffer_.buffered.start(0),
- this.lastKeyFramePos_);
- }
-
- this.lastKeyFramePos_ = this.sourceBuffer_.buffered.end(
- this.sourceBuffer_.buffered.length - 1);
- }
- } else {
- // TODO(sergeyu): Figure out the way to determine when a frame is
- // rendered and use it to report performance statistics.
- this.sourceBuffer_.appendBuffer(buffer);
- }
- }
- }
-}
-
-/**
- * @param {ArrayBuffer} data
- * @param {boolean} keyframe
- */
-remoting.MediaSourceRenderer.prototype.onIncomingData =
- function(data, keyframe) {
- if (keyframe) {
- // Queue SourceBuffer reset request.
- this.buffers_.push(null);
- }
- this.buffers_.push(data);
- this.processPendingData_();
-}
-
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