fix(DASH): Revert Dolby Atmos detection when there is not SupplementalProperty (#8132)

Reverts
cf581cd
Reverts
56c5f52

Author: avelad

lib/dash/dash_parser.js

@@ -2133,12 +2133,8 @@ shaka.dash.DashParser = class {
       return element.attributes['schemeIdUri'] == expectedUri &&
           element.attributes['value'] == expectedValue;
     });
-    const codecs = context.representation.codecs;
-    // Detect the presence of Dolby Atmos audio content based on the codec and
-    // bandwidth. Bandwidth above 384 kbps is a good indicator of Atmos content.
-    const isAtmos = codecs.includes('ec-3') && context.bandwidth > 384000;
     let spatialAudio = false;
-    if (hasJoc || isAtmos) {
+    if (hasJoc) {
       spatialAudio = true;
     }
 
@@ -2172,6 +2168,7 @@ shaka.dash.DashParser = class {
 
     let hdr;
     const profiles = context.profiles;
+    const codecs = context.representation.codecs;
 
     const hevcHDR = 'http://dashif.org/guidelines/dash-if-uhd#hevc-hdr-pq10';
     if (profiles.includes(hevcHDR) && (codecs.includes('hvc1.2.4.L153.B0') ||

test/dash/dash_parser_manifest_unit.js

@@ -538,28 +538,6 @@ describe('DashParser Manifest', () => {
     expect(stream.spatialAudio).toBe(true);
   });
 
-  it('Detects spatial audio by codec and bandwidth', async () => {
-    const source = [
-      '<MPD>',
-      '  <Period duration="PT30M">',
-      '    <AdaptationSet mimeType="audio/mp4" lang="\u2603">',
-      '      <Representation bandwidth="768000" codecs="ec-3">',
-      '        <BaseURL>http://example.com</BaseURL>',
-      '        <SegmentTemplate media="2.mp4" duration="1" />',
-      '      </Representation>',
-      '    </AdaptationSet>',
-      '  </Period>',
-      '</MPD>',
-    ].join('\n');
-
-    fakeNetEngine.setResponseText('dummy://foo', source);
-
-    /** @type {shaka.extern.Manifest} */
-    const manifest = await parser.start('dummy://foo', playerInterface);
-    const stream = manifest.variants[0].audio;
-    expect(stream.spatialAudio).toBe(true);
-  });
-
   it('correctly parses CEA-608 closed caption tags without channel numbers',
       async () => {
         const source = [