Revert "Add support for more qualities, merging video+audio using MSE"

This reverts commit d56df02e7b1eba86baf511289208295b1f6c5a50.

1 files changed, 0 insertions, 445 deletions

diff --git a/youtube/static/js/av-merge.js b/youtube/static/js/av-merge.js
deleted file mode 100644
index 389884a..0000000
--- a/youtube/static/js/av-merge.js
+++ /dev/null
@@ -1,445 +0,0 @@
-// Heavily modified from
-// https://github.com/nickdesaulniers/netfix/issues/4#issuecomment-578856471
-// which was in turn modified from
-// https://github.com/nickdesaulniers/netfix/blob/gh-pages/demo/bufferWhenNeeded.html
-
-// Useful reading:
-// https://stackoverflow.com/questions/35177797/what-exactly-is-fragmented-mp4fmp4-how-is-it-different-from-normal-mp4
-// https://axel.isouard.fr/blog/2016/05/24/streaming-webm-video-over-html5-with-media-source
-
-// We start by parsing the sidx (segment index) table in order to get the
-// byte ranges of the segments. The byte range of the sidx table is provided
-// by the indexRange variable by YouTube
-
-// Useful info, as well as segments vs sequence mode (we use segments mode)
-// https://joshuatz.com/posts/2020/appending-videos-in-javascript-with-mediasource-buffers/
-
-// SourceBuffer data limits:
-// https://developers.google.com/web/updates/2017/10/quotaexceedederror
-
-// TODO: Better buffering algorithm
-// TODO: Call abort to cancel in-progress appends?
-
-
-var video_source = data['pair_sources'][data['pair_idx']][0];
-var audio_source = data['pair_sources'][data['pair_idx']][1];
-
-var audioStream = null;
-var videoStream = null;
-var seeking = false;
-
-var video = document.querySelector('video');
-var mediaSource = null;
-
-setup();
-
-
-function setup() {
-    if ('MediaSource' in window
-            && MediaSource.isTypeSupported(audio_source['mime_codec'])
-            && MediaSource.isTypeSupported(video_source['mime_codec'])) {
-        mediaSource = new MediaSource();
-        video.src = URL.createObjectURL(mediaSource);
-        mediaSource.addEventListener('sourceopen', sourceOpen);
-    } else {
-        reportError('Unsupported MIME type or codec: ',
-                    audio_source['mime_codec'],
-                    video_source['mime_codec']);
-    }
-}
-
-
-function sourceOpen(_) {
-    videoStream = new Stream(mediaSource, video_source);
-    audioStream = new Stream(mediaSource, audio_source);
-
-    videoStream.setup();
-    audioStream.setup();
-
-    video.addEventListener('timeupdate', checkBothBuffers);
-    video.addEventListener('seeking', debounce(seek, 500));
-    //video.addEventListener('seeked', function() {console.log('seeked')});
-}
-
-
-function Stream(mediaSource, source) {
-    this.url = source['url'];
-    this.mimeCodec = source['mime_codec']
-    this.streamType = source['acodec'] ? 'audio' : 'video';
-
-    this.initRange = source['init_range'];
-    this.indexRange = source['index_range'];
-
-    this.mediaSource = mediaSource;
-    this.sidx = null;
-    this.appendRetries = 0;
-    this.appendQueue = []; // list of [segmentIdx, data]
-    this.sourceBuffer = mediaSource.addSourceBuffer(this.mimeCodec);
-    this.sourceBuffer.mode = 'segments';
-    this.sourceBuffer.addEventListener('error', (e) => {
-        this.reportError('sourceBuffer error', e);
-    });
-    this.sourceBuffer.addEventListener('updateend', (e) => {
-        this.reportDebug('updateend', e);
-        if (this.appendQueue.length != 0) {
-            this.appendSegment(...this.appendQueue.pop());
-        }
-    });
-}
-Stream.prototype.setup = async function(){
-    // Group requests together
-    if (this.initRange.end+1 == this.indexRange.start){
-        fetchRange(
-            this.url,
-            this.initRange.start,
-            this.indexRange.end,
-            (buffer) => {
-                var init_end = this.initRange.end - this.initRange.start + 1;
-                var index_start = this.indexRange.start - this.initRange.start;
-                var index_end = this.indexRange.end - this.initRange.start + 1;
-                this.appendSegment(null, buffer.slice(0, init_end));
-                this.setupSegments(buffer.slice(index_start, index_end));
-            }
-        )
-    } else {
-        // initialization data
-        await fetchRange(
-            this.url,
-            this.initRange.start,
-            this.initRange.end,
-            this.appendSegment.bind(this, null),
-        );
-        // sidx (segment index) table
-        fetchRange(
-            this.url,
-            this.indexRange.start,
-            this.indexRange.end,
-            this.setupSegments.bind(this)
-        );
-    }
-}
-Stream.prototype.setupSegments = async function(sidxBox){
-    var box = unbox(sidxBox);
-    this.sidx = sidx_parse(box.data, this.indexRange.end+1);
-    this.reportDebug('sidx', this.sidx);
-
-    this.reportDebug('appending first segment');
-    this.fetchSegmentIfNeeded(0);
-}
-Stream.prototype.appendSegment = function(segmentIdx, chunk) {
-    // cannot append right now, schedule for updateend
-    if (this.sourceBuffer.updating) {
-        this.reportDebug('sourceBuffer updating, queueing for later');
-        this.appendQueue.push([segmentIdx, chunk]);
-        if (this.appendQueue.length > 2){
-            this.reportWarning('appendQueue length:', this.appendQueue.length);
-        }
-        return;
-    }
-    try {
-        this.sourceBuffer.appendBuffer(chunk);
-        if (segmentIdx !== null)
-            this.sidx.entries[segmentIdx].have = true;
-        this.appendRetries = 0;
-    } catch (e) {
-        if (e.name !== 'QuotaExceededError') {
-            throw e;
-        }
-        // Delete 3 segments (arbitrary) from beginning of buffer, making sure
-        // not to delete current one
-        var currentSegment = this.getSegmentIdx(video.currentTime);
-        this.reportDebug('QuotaExceededError. Deleting segments.');
-        var numDeleted = 0;
-        var i = 0;
-        while (numDeleted < 3 && i < currentSegment) {
-            let entry = this.sidx.entries[i];
-            let start = entry.tickStart/this.sidx.timeScale;
-            let end = entry.tickEnd/this.sidx.timeScale;
-            if (entry.have) {
-                this.reportDebug('Deleting segment', i);
-                this.sourceBuffer.remove(start, end);
-            }
-        }
-    }
-}
-Stream.prototype.getSegmentIdx = function(videoTime) {
-    // get an estimate
-    var currentTick = videoTime * this.sidx.timeScale;
-    var firstSegmentDuration = this.sidx.entries[0].subSegmentDuration;
-    var index = 1 + Math.floor(currentTick / firstSegmentDuration);
-    var index = clamp(index, 0, this.sidx.entries.length - 1);
-
-    var increment = 1;
-    if (currentTick < this.sidx.entries[index].tickStart){
-        increment = -1;
-    }
-
-    // go up or down to find correct index
-    while (index >= 0 && index < this.sidx.entries.length) {
-        var entry = this.sidx.entries[index];
-        if (entry.tickStart <= currentTick && entry.tickEnd >= currentTick){
-            return index;
-        }
-        index = index + increment;
-    }
-    this.reportError('Could not find segment index for time', videoTime);
-    return 0;
-}
-Stream.prototype.shouldFetchNextSegment = function(nextSegment) {
-    // > 15% done with current segment
-    if (nextSegment >= this.sidx.entries.length){
-        return false;
-    }
-    var entry = this.sidx.entries[nextSegment - 1];
-    var currentTick = video.currentTime * this.sidx.timeScale;
-    return currentTick > (entry.tickStart + entry.subSegmentDuration*0.15);
-}
-Stream.prototype.checkBuffer = async function() {
-    this.reportDebug('check Buffer');
-    if (seeking) {
-        return;
-    }
-    var nextSegment = this.getSegmentIdx(video.currentTime) + 1;
-
-    if (this.shouldFetchNextSegment(nextSegment)) {
-        this.fetchSegmentIfNeeded(nextSegment);
-    }
-}
-Stream.prototype.segmentInBuffer = function(segmentIdx) {
-    var entry = this.sidx.entries[segmentIdx];
-    // allow for 0.01 second error
-    var timeStart = entry.tickStart/this.sidx.timeScale + 0.01;
-    var timeEnd = entry.tickEnd/this.sidx.timeScale - 0.01;
-    var timeRanges = this.sourceBuffer.buffered;
-    for (var i=0; i < timeRanges.length; i++) {
-        if (timeRanges.start(i) <= timeStart && timeEnd <= timeRanges.end(i)) {
-            return true;
-        }
-    }
-    return false;
-}
-Stream.prototype.fetchSegmentIfNeeded = function(segmentIdx) {
-    entry = this.sidx.entries[segmentIdx];
-    // check if we had it before, but it was deleted by the browser
-    if (entry.have && !this.segmentInBuffer(segmentIdx)) {
-        this.reportDebug('segment', segmentIdx, 'deleted by browser');
-        entry.have = false;
-        entry.requested = false;
-    }
-    if (entry.requested) {
-        return;
-    }
-    if (segmentIdx < 0 || segmentIdx >= this.sidx.entries.length){
-        return;
-    }
-    entry.requested = true;
-
-    fetchRange(
-        this.url,
-        entry.start,
-        entry.end,
-        this.appendSegment.bind(this, segmentIdx),
-    );
-}
-Stream.prototype.handleSeek = async function() {
-    var segmentIdx = this.getSegmentIdx(video.currentTime);
-    this.fetchSegmentIfNeeded(segmentIdx);
-}
-Stream.prototype.reportDebug = function(...args) {
-    reportDebug(String(this.streamType) + ':', ...args);
-}
-Stream.prototype.reportWarning = function(...args) {
-    reportWarning(String(this.streamType) + ':', ...args);
-}
-Stream.prototype.reportError = function(...args) {
-    reportError(String(this.streamType) + ':', ...args);
-}
-
-function checkBothBuffers() {
-    audioStream.checkBuffer();
-    videoStream.checkBuffer();
-}
-
-function seek(e) {
-    if (mediaSource.readyState === 'open') {
-        seeking = true;
-        audioStream.handleSeek();
-        videoStream.handleSeek();
-        seeking = false;
-    } else {
-        this.reportWarning('seek but not open? readyState:',
-                           mediaSource.readyState);
-    }
-}
-
-
-// Utility functions
-function fetchRange(url, start, end, cb) {
-    reportDebug('fetchRange', start, end);
-    return new Promise((resolve, reject) => {
-        var xhr = new XMLHttpRequest();
-        xhr.open('get', url);
-        xhr.responseType = 'arraybuffer';
-        xhr.setRequestHeader('Range', 'bytes=' + start + '-' + end);
-        xhr.onload = function() {
-            reportDebug('fetched bytes: ', start, end);
-            //bytesFetched += end - start + 1;
-            resolve(cb(xhr.response));
-        };
-        xhr.send();
-    });
-}
-
-function debounce(func, wait, immediate) {
-    var timeout;
-    return function() {
-        var context = this;
-        var args = arguments;
-        var later = function() {
-            timeout = null;
-            if (!immediate) func.apply(context, args);
-        };
-        var callNow = immediate && !timeout;
-        clearTimeout(timeout);
-        timeout = setTimeout(later, wait);
-        if (callNow) func.apply(context, args);
-    };
-}
-
-function clamp(number, min, max) {
-  return Math.max(min, Math.min(number, max));
-}
-
-function reportWarning(...args){
-    console.log(...args);
-}
-function reportError(...args){
-    console.log(...args);
-}
-function reportDebug(...args){
-    console.log(...args);
-}
-
-function byteArrayToIntegerLittleEndian(unsignedByteArray){
-    var result = 0;
-    for (byte of unsignedByteArray){
-        result = result*256;
-        result += byte
-    }
-    return result;
-}
-function ByteParser(data){
-    this.curIndex = 0;
-    this.data = new Uint8Array(data);
-}
-ByteParser.prototype.readInteger = function(nBytes){
-    var result = byteArrayToIntegerLittleEndian(
-        this.data.slice(this.curIndex, this.curIndex + nBytes)
-    );
-    this.curIndex += nBytes;
-    return result;
-}
-ByteParser.prototype.readBufferBytes = function(nBytes){
-    var result = this.data.slice(this.curIndex, this.curIndex + nBytes);
-    this.curIndex += nBytes;
-    return result;
-}
-
-// BEGIN iso-bmff-parser-stream/lib/box/sidx.js (modified)
-// https://github.com/necccc/iso-bmff-parser-stream/blob/master/lib/box/sidx.js
-/* The MIT License (MIT)
-
-Copyright (c) 2014 Szabolcs Szabolcsi-Toth
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.*/
-function sidx_parse (data, offset) {
-	var bp = new ByteParser(data),
-		version = bp.readInteger(1),
-		flags = bp.readInteger(3),
-		referenceId = bp.readInteger(4),
-		timeScale = bp.readInteger(4),
-		earliestPresentationTime = bp.readInteger(version === 0 ? 4 : 8),
-		firstOffset = bp.readInteger(4),
-		__reserved = bp.readInteger(2),
-		entryCount = bp.readInteger(2),
-		entries = [];
-
-    var totalBytesOffset = firstOffset + offset;
-    var totalTicks = 0;
-	for (var i = entryCount; i > 0; i=i-1 ) {
-        let referencedSize = bp.readInteger(4),
-			subSegmentDuration = bp.readInteger(4),
-			unused = bp.readBufferBytes(4)
-		entries.push({
-			referencedSize: referencedSize,
-			subSegmentDuration: subSegmentDuration,
-			unused: unused,
-            start: totalBytesOffset,
-            end: totalBytesOffset + referencedSize - 1, // inclusive
-            tickStart: totalTicks,
-            tickEnd: totalTicks + subSegmentDuration - 1,
-            requested: false,
-            have: false,
-		});
-        totalBytesOffset = totalBytesOffset + referencedSize;
-        totalTicks = totalTicks + subSegmentDuration;
-	}
-
-	return {
-		version: version,
-		flags: flags,
-		referenceId: referenceId,
-		timeScale: timeScale,
-		earliestPresentationTime: earliestPresentationTime,
-		firstOffset: firstOffset,
-		entries: entries
-	};
-}
-// END sidx.js
-
-// BEGIN iso-bmff-parser-stream/lib/unbox.js (same license), modified
-function unbox(buf) {
-	var bp = new ByteParser(buf),
-		bufferLength = buf.length,
-		length,
-		typeData,
-		boxData
-
-    length = bp.readInteger(4); // length of entire box,
-    typeData = bp.readInteger(4);
-
-    if (bufferLength - length < 0) {
-        reportWarning('Warning: sidx table is cut off');
-        return {
-            currentLength: bufferLength,
-            length: length,
-            type: typeData,
-            data: bp.readBufferBytes(bufferLength)
-        };
-    }
-
-    boxData = bp.readBufferBytes(length - 8);
-
-    return {
-        length: length,
-        type: typeData,
-        data: boxData
-    };
-}
-// END unbox.js