Implement #91

chrome/_locales/en/messages.json

@@ -756,6 +756,9 @@
     "options_general_targetspeed": {
         "message": "Target download speed of predownloader"
     },
+    "options_general_maxsize": {
+        "message": "Maximum size of predownloaded video"
+    },
     "options_general_freeunused": {
         "message": "Free unused channel buffers when switching quality levels"
     },

chrome/_locales/es/messages.json

@@ -755,6 +755,9 @@
     "options_general_targetspeed": {
         "message": "Velocidad de descarga objetivo del predescargador"
     },
+    "options_general_maxsize": {
+        "message": "Tamaño máximo de video predescargado"
+    },
     "options_general_freeunused": {
         "message": "Libera los búferes de canal no utilizados al cambiar los niveles de calidad"
     },

chrome/_locales/ja/messages.json

@@ -756,6 +756,9 @@
     "options_general_targetspeed": {
         "message": "プリダウンローダーのターゲット速度"
     },
+    "options_general_maxsize": {
+        "message": "プリダウンローダーの最大サイズ"
+    },
     "options_general_freeunused": {
         "message": "品質レベル切り替え時に未使用のチャンネルバッファーを解放する"
     },

chrome/_locales/ru/messages.json

@@ -756,6 +756,9 @@
     "options_general_targetspeed": {
         "message": "Целевая скорость предзагрузки"
     },
+    "options_general_maxsize": {
+        "message": "Максимальный размер предзагружаемого видео"
+    },
     "options_general_freeunused": {
         "message": "Выгружать неиспользуемые буферы каналов при изменении качества видео"
     },

chrome/player/FastStreamClient.mjs

@@ -30,6 +30,7 @@ export class FastStreamClient extends EventEmitter {
     this.options = {
       autoPlay: false,
       maxSpeed: -1,
+      maxSize: -1,
       introCutoff: 5 * 60,
       outroCutoff: 5 * 60,
       bufferAhead: 120,
@@ -170,6 +171,7 @@ export class FastStreamClient extends EventEmitter {
     this.options.freeUnusedChannels = options.freeUnusedChannels;
     this.options.autoEnableBestSubtitles = options.autoEnableBestSubtitles;
     this.options.maxSpeed = options.maxSpeed;
+    this.options.maxSize = options.maxSize;
     this.options.seekStepSize = options.seekStepSize;
     this.options.singleClickAction = options.singleClickAction;
     this.options.doubleClickAction = options.doubleClickAction;
@@ -214,6 +216,8 @@ export class FastStreamClient extends EventEmitter {
       this.options.toolSettings = options.toolSettings;
       this.interfaceController.updateToolVisibility();
     }
+
+    this.updateHasDownloadSpace();
   }
 
   updateCSSFilters() {
@@ -351,7 +355,10 @@ export class FastStreamClient extends EventEmitter {
       this.hasDownloadSpace = false;
     } else {
       if (level.bitrate && this.duration) {
-        const storageAvailable = (this.storageAvailable * 8) * 0.6;
+        let storageAvailable = (this.storageAvailable * 8) * 0.6;
+        if (this.options.maxSize > 0) {
+          storageAvailable = Math.min(storageAvailable, this.options.maxSize * 8);
+        }
         this.hasDownloadSpace = (level.bitrate * this.duration) < storageAvailable;
       } else {
         this.hasDownloadSpace = true;

chrome/player/options/defaults/DefaultOptions.mjs

@@ -27,6 +27,7 @@ export const DefaultOptions = {
   videoDaltonizerType: DaltonizerTypes.NONE,
   videoDaltonizerStrength: 1,
   maxSpeed: -1,
+  maxSize: -1,
   seekStepSize: 2,
   playbackRate: 1,
   qualityMultiplier: 1.1,

chrome/player/options/index.html

@@ -109,6 +109,11 @@ <h1 data-i18n="options_general_header"></h1>
         <input class="number" type="text" id="maxspeed" data-i18n-label="options_general_targetspeed"></input>
     </div>
 
+    <div class="option grid2" style="margin-left: 25px; margin-top: 3px">
+        <div class="label" data-i18n="options_general_maxsize"></div>
+        <input class="number" type="text" id="maxsize" data-i18n-label="options_general_maxsize"></input>
+    </div>
+
     <br>
 
     <div class="option grid1">

chrome/player/options/options.mjs

@@ -24,6 +24,7 @@ const keybindsList = document.getElementById('keybindslist');
 const autoEnableURLSInput = document.getElementById('autoEnableURLs');
 const autoSub = document.getElementById('autosub');
 const maxSpeed = document.getElementById('maxspeed');
+const maxSize = document.getElementById('maxsize');
 const seekStepSize = document.getElementById('seekstepsize');
 const playbackRate = document.getElementById('playbackrate');
 const autoplayYoutube = document.getElementById('autoplayyt');
@@ -79,6 +80,7 @@ async function loadOptions(newOptions) {
   autoSub.checked = !!Options.autoEnableBestSubtitles;
   autoplayYoutube.checked = !!Options.autoplayYoutube;
   maxSpeed.value = StringUtils.getSpeedString(Options.maxSpeed, true);
+  maxSize.value = StringUtils.getSizeString(Options.maxSize);
   seekStepSize.value = Math.round(Options.seekStepSize * 100) / 100;
   playbackRate.value = Options.playbackRate;
   qualityMultiplier.value = Options.qualityMultiplier;
@@ -341,6 +343,13 @@ maxSpeed.addEventListener('change', () => {
   optionChanged();
 });
 
+maxSize.addEventListener('change', () => {
+  // parse value, number unit
+  Options.maxSize = StringUtils.getSizeValue(maxSize.value);
+  maxSize.value = StringUtils.getSizeString(Options.maxSize);
+  optionChanged();
+});
+
 seekStepSize.addEventListener('change', () => {
   Options.seekStepSize = parseFloat(seekStepSize.value);
   optionChanged();

chrome/player/utils/StringUtils.mjs

@@ -194,6 +194,63 @@ export class StringUtils {
     return Math.round(value * 100) / 100 + ' ' + unit;
   }
 
+  static getSizeString(size) {
+    if (size=== -1) {
+      return '∞ GB';
+    }
+
+    let unit = 'B';
+    if (size >= 1000) {
+      unit = 'KB';
+      size /= 1000;
+    }
+    if (size >= 1000) {
+      unit = 'MB';
+      size /= 1000;
+    }
+    if (size >= 1000) {
+      unit = 'GB';
+      size /= 1000;
+    }
+    if (size >= 1000) {
+      unit = 'TB';
+      size /= 1000;
+    }
+    return Math.round(size * 100) / 100 + ' ' + unit;
+  }
+
+  static getSizeValue(sizeStr) {
+    const float = parseFloat(sizeStr);
+    const unit = sizeStr.replace(float, '').trim();
+    if (
+      isNaN(float) ||
+      float < 0 ||
+      float === Infinity
+    ) {
+      return -1;
+    }
+
+    // Unit can be MB, Mb, etc...
+    const match = unit.match(/([a-oq-zA-Z]+)/);
+    const unit1 = match?.[1];
+
+    let multiplier = 1;
+
+    // Convert to bytes
+    if (unit1) {
+      const sci = ['b', 'k', 'm', 'g', 't', 'p', 'e', 'z', 'y'];
+      const split = unit1.split('');
+      if (sci.includes(split[0].toLowerCase())) {
+        multiplier *= 1000 ** sci.indexOf(split[0].toLowerCase());
+      } else {
+        // M default
+        multiplier *= 1000 ** 2;
+      }
+    }
+
+    return float * multiplier;
+  }
+
   static parseHTTPRange(range) {
     const match = range.match(/(\d+)-(\d+)?/);
     if (!match) return [undefined, undefined];