fix(HLS): Disable audio/video correctly when loading a TS media playlist (#7815)

Author: avelad

lib/hls/hls_parser.js

@@ -1164,8 +1164,8 @@ shaka.hls.HlsParser = class {
 
     if (shaka.util.TsParser.probe(
         shaka.util.BufferUtils.toUint8(data))) {
-      const basicInfo =
-          shaka.media.SegmentUtils.getBasicInfoFromTs(data);
+      const basicInfo = shaka.media.SegmentUtils.getBasicInfoFromTs(
+          data, this.config_.disableAudio, this.config_.disableVideo);
       if (basicInfo) {
         return basicInfo;
       }

lib/media/segment_utils.js

@@ -48,60 +48,66 @@ shaka.media.SegmentUtils = class {
 
   /**
    * @param {!BufferSource} data
+   * @param {boolean=} disableAudio
+   * @param {boolean=} disableVideo
    * @return {?shaka.media.SegmentUtils.BasicInfo}
    */
-  static getBasicInfoFromTs(data) {
+  static getBasicInfoFromTs(data, disableAudio = false, disableVideo = false) {
     const uint8ArrayData = shaka.util.BufferUtils.toUint8(data);
     const tsParser = new shaka.util.TsParser().parse(uint8ArrayData);
     const tsCodecs = tsParser.getCodecs();
     const videoInfo = tsParser.getVideoInfo();
     const codecs = [];
     let hasAudio = false;
     let hasVideo = false;
-    switch (tsCodecs.audio) {
-      case 'aac':
-      case 'aac-loas':
-        codecs.push('mp4a.40.2');
-        hasAudio = true;
-        break;
-      case 'mp3':
-        codecs.push('mp4a.40.34');
-        hasAudio = true;
-        break;
-      case 'ac3':
-        codecs.push('ac-3');
-        hasAudio = true;
-        break;
-      case 'ec3':
-        codecs.push('ec-3');
-        hasAudio = true;
-        break;
-      case 'opus':
-        codecs.push('opus');
-        hasAudio = true;
-        break;
+    if (!disableAudio) {
+      switch (tsCodecs.audio) {
+        case 'aac':
+        case 'aac-loas':
+          codecs.push('mp4a.40.2');
+          hasAudio = true;
+          break;
+        case 'mp3':
+          codecs.push('mp4a.40.34');
+          hasAudio = true;
+          break;
+        case 'ac3':
+          codecs.push('ac-3');
+          hasAudio = true;
+          break;
+        case 'ec3':
+          codecs.push('ec-3');
+          hasAudio = true;
+          break;
+        case 'opus':
+          codecs.push('opus');
+          hasAudio = true;
+          break;
+      }
     }
-    switch (tsCodecs.video) {
-      case 'avc':
-        if (videoInfo.codec) {
-          codecs.push(videoInfo.codec);
-        } else {
-          codecs.push('avc1.42E01E');
-        }
-        hasVideo = true;
-        break;
-      case 'hvc':
-        if (videoInfo.codec) {
-          codecs.push(videoInfo.codec);
-        } else {
-          codecs.push('hvc1.1.6.L93.90');
-        }
-        hasVideo = true;
-        break;
-      case 'av1':
-        codecs.push('av01.0.01M.08');
-        hasVideo = true;
-        break;
+    if (!disableVideo) {
+      switch (tsCodecs.video) {
+        case 'avc':
+          if (videoInfo.codec) {
+            codecs.push(videoInfo.codec);
+          } else {
+            codecs.push('avc1.42E01E');
+          }
+          hasVideo = true;
+          break;
+        case 'hvc':
+          if (videoInfo.codec) {
+            codecs.push(videoInfo.codec);
+          } else {
+            codecs.push('hvc1.1.6.L93.90');
+          }
+          hasVideo = true;
+          break;
+        case 'av1':
+          codecs.push('av01.0.01M.08');
+          hasVideo = true;
+          break;
+      }
     }
     if (!codecs.length) {
       return null;