fix(MSS): Fix parsing of PIFF Sample Encryption Box

demo/common/assets.js

@@ -920,14 +920,6 @@ shakaAssets.testAssets = [
       .addFeature(shakaAssets.Feature.MP4)
       .addFeature(shakaAssets.Feature.LIVE)
       .addFeature(shakaAssets.Feature.THUMBNAILS),
-  new ShakaDemoAssetInfo(
-      /* name= */ 'Microsoft Smooth Streaming',
-      /* iconUri= */ 'https://reference.dashif.org/dash.js/latest/samples/lib/img/mss-1.jpg',
-      /* manifestUri= */ 'https://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720.ism/Manifest',
-      /* source= */ shakaAssets.Source.DASH_IF)
-      .addFeature(shakaAssets.Feature.MSS)
-      .addFeature(shakaAssets.Feature.HIGH_DEFINITION)
-      .addFeature(shakaAssets.Feature.MP4),
   // End DASH-IF Assets }}}
 
   // bitcodin assets {{{
@@ -1319,6 +1311,23 @@ shakaAssets.testAssets = [
       .addFeature(shakaAssets.Feature.MP4)
       .addFeature(shakaAssets.Feature.HIGH_DEFINITION)
       .addLicenseServer('com.microsoft.playready', 'http://test.playready.microsoft.com/service/rightsmanager.asmx?cfg=(persist:false,ck:W31bfVt9W31bfVt9W31bfQ==,ckt:aescbc)'),
+  new ShakaDemoAssetInfo(
+      /* name= */ 'Super Speedway Trailer (MSS - Clear)',
+      /* iconUri= */ 'https://reference.dashif.org/dash.js/latest/samples/lib/img/mss-1.jpg',
+      /* manifestUri= */ 'https://test.playready.microsoft.com/smoothstreaming/SSWSS720H264/SuperSpeedway_720.ism/Manifest',
+      /* source= */ shakaAssets.Source.MICROSOFT)
+      .addFeature(shakaAssets.Feature.MSS)
+      .addFeature(shakaAssets.Feature.HIGH_DEFINITION)
+      .addFeature(shakaAssets.Feature.MP4),
+  new ShakaDemoAssetInfo(
+      /* name= */ 'Super Speedway Trailer (MSS - PlayReady)',
+      /* iconUri= */ 'https://reference.dashif.org/dash.js/latest/samples/lib/img/mss-1.jpg',
+      /* manifestUri= */ 'https://test.playready.microsoft.com/smoothstreaming/SSWSS720H264PR/SuperSpeedway_720.ism/Manifest',
+      /* source= */ shakaAssets.Source.MICROSOFT)
+      .addFeature(shakaAssets.Feature.MSS)
+      .addFeature(shakaAssets.Feature.HIGH_DEFINITION)
+      .addFeature(shakaAssets.Feature.MP4)
+      .addLicenseServer('com.microsoft.playready', 'https://test.playready.microsoft.com/service/rightsmanager.asmx?cfg=(persist:false,sl:150)'),
   // }}}
 
   // MPEG-5 LCEVC assets {{{

externs/isoboxer.js

@@ -45,6 +45,7 @@ var ISOBoxerUtils;
 
 /**
  * @typedef {{
+ *   _parsing: boolean,
  *   type: string,
  *   size: number,
  *   _parent: ISOBox,
@@ -123,6 +124,7 @@ var ISOBoxerUtils;
  *   sample_info_size: Array.<number>,
  *   data_offset: number
  * }}
+ * @property {boolean} _parsing
  * @property {string} type
  * @property {number} size
  * @property {ISOBox} _parent

lib/mss/content_protection.js

@@ -170,12 +170,22 @@ shaka.mss.ContentProtection = class {
    * @private
    */
   static getKID_(xml) {
+    const Uint8ArrayUtils = shaka.util.Uint8ArrayUtils;
     // KID element is optional and no more than one is
     // allowed inside the DATA element.
     for (const elem of xml.getElementsByTagName('DATA')) {
       const kid = shaka.util.XmlUtils.findChild(elem, 'KID');
       if (kid) {
-        return kid.textContent;
+        // GUID: [DWORD, WORD, WORD, 8-BYTE]
+        const guidBytes = Uint8ArrayUtils.fromBase64(kid.textContent);
+        // Reverse byte order from little-endian to big-endian
+        const kidBytes = new Uint8Array([
+          guidBytes[3], guidBytes[2], guidBytes[1], guidBytes[0],
+          guidBytes[5], guidBytes[4],
+          guidBytes[7], guidBytes[6],
+          ...guidBytes.slice(8),
+        ]);
+        return Uint8ArrayUtils.toHex(kidBytes);
       }
     }
 
@@ -274,7 +284,7 @@ shaka.mss.ContentProtection = class {
 
     for (let i = 0; i < elements.length; i++) {
       const element = elements[i];
-      const systemID = element.getAttribute('SystemID');
+      const systemID = element.getAttribute('SystemID').toLowerCase();
       const keySystem = keySystemsBySystemId[systemID];
       if (keySystem) {
         const KID = ContentProtection.getPlayReadyKID_(element);

lib/transmuxer/mss_transmuxer.js

@@ -98,14 +98,16 @@ shaka.transmuxer.MssTransmuxer = class {
       }
     });
     // eslint-disable-next-line no-restricted-syntax
-    this.isoBoxer_.addBoxProcessor('senc', function() {
+    const sencProcessor = function() {
       // eslint-disable-next-line no-invalid-this
       const box = /** @type {!ISOBox} */(this);
       box._procFullBox();
-      box._procField('sample_count', 'uint', 32);
       if (box.flags & 1) {
+        box._procField('AlgorithmID', 'uint', 24);
         box._procField('IV_size', 'uint', 8);
+        box._procFieldArray('KID', 16, 'uint', 8);
       }
+      box._procField('sample_count', 'uint', 32);
       // eslint-disable-next-line no-restricted-syntax
       box._procEntries('entry', box.sample_count, function(entry) {
         // eslint-disable-next-line no-invalid-this
@@ -125,6 +127,28 @@ shaka.transmuxer.MssTransmuxer = class {
               });
         }
       });
+    };
+    this.isoBoxer_.addBoxProcessor('senc', sencProcessor);
+    // eslint-disable-next-line no-restricted-syntax
+    this.isoBoxer_.addBoxProcessor('uuid', function() {
+      const MssTransmuxer = shaka.transmuxer.MssTransmuxer;
+      // eslint-disable-next-line no-invalid-this
+      const box = /** @type {!ISOBox} */(this);
+      let isSENC = true;
+      for (let i = 0; i < 16; i++) {
+        if (box.usertype[i] !== MssTransmuxer.UUID_SENC_[i]) {
+          isSENC = false;
+        }
+        // Add support for other user types here
+      }
+
+      if (isSENC) {
+        if (box._parsing) {
+          box.type = 'sepiff'; // Rename it to be recognized later
+        }
+        // eslint-disable-next-line no-restricted-syntax, no-invalid-this
+        sencProcessor.call(/** @type {!ISOBox} */(this));
+      }
     });
   }
 
@@ -345,6 +369,14 @@ shaka.transmuxer.MssTransmuxer = class {
   }
 };
 
+/**
+ * @private {!Uint8Array}
+ */
+shaka.transmuxer.MssTransmuxer.UUID_SENC_ = new Uint8Array([
+  0xA2, 0x39, 0x4F, 0x52, 0x5A, 0x9B, 0x4F, 0x14,
+  0xA2, 0x44, 0x6C, 0x42, 0x7C, 0x64, 0x8D, 0xF4,
+]);
+
 shaka.transmuxer.TransmuxerEngine.registerTransmuxer(
     'mss/audio/mp4',
     () => new shaka.transmuxer.MssTransmuxer('mss/audio/mp4'),

test/mss/mss_parser_unit.js

@@ -24,6 +24,27 @@ describe('MssParser Manifest', () => {
 
   const aacCodecPrivateData = '1210';
 
+  // From https://test.playready.microsoft.com/smoothstreaming/SSWSS720H264PR/S
+  //      uperSpeedway_720.ism/Manifest
+  const protectionHeader = 'jAMAAAEAAQCCAzwAVwBSAE0ASABFAEEARABFAFIAIAB4AG0A' +
+      'bABuAHMAPQAiAGgAdAB0AHAAOgAvAC8AcwBjAGgAZQBtAGEAcwAuAG0AaQBjAHIAbwBzA' +
+      'G8AZgB0AC4AYwBvAG0ALwBEAFIATQAvADIAMAAwADcALwAwADMALwBQAGwAYQB5AFIAZQ' +
+      'BhAGQAeQBIAGUAYQBkAGUAcgAiACAAdgBlAHIAcwBpAG8AbgA9ACIANAAuADAALgAwAC4' +
+      'AMAAiAD4APABEAEEAVABBAD4APABQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsARQBZ' +
+      'AEwARQBOAD4AMQA2ADwALwBLAEUAWQBMAEUATgA+ADwAQQBMAEcASQBEAD4AQQBFAFMAQ' +
+      'wBUAFIAPAAvAEEATABHAEkARAA+ADwALwBQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AE' +
+      'sASQBEAD4AQQBtAGYAagBDAFQATwBQAGIARQBPAGwAMwBXAEQALwA1AG0AYwBlAGMAQQA' +
+      '9AD0APAAvAEsASQBEAD4APABDAEgARQBDAEsAUwBVAE0APgBCAEcAdwAxAGEAWQBaADEA' +
+      'WQBYAE0APQA8AC8AQwBIAEUAQwBLAFMAVQBNAD4APABDAFUAUwBUAE8ATQBBAFQAVABSA' +
+      'EkAQgBVAFQARQBTAD4APABJAEkAUwBfAEQAUgBNAF8AVgBFAFIAUwBJAE8ATgA+ADcALg' +
+      'AxAC4AMQAwADYANAAuADAAPAAvAEkASQBTAF8ARABSAE0AXwBWAEUAUgBTAEkATwBOAD4' +
+      'APAAvAEMAVQBTAFQATwBNAEEAVABUAFIASQBCAFUAVABFAFMAPgA8AEwAQQBfAFUAUgBM' +
+      'AD4AaAB0AHQAcAA6AC8ALwBwAGwAYQB5AHIAZQBhAGQAeQAuAGQAaQByAGUAYwB0AHQAY' +
+      'QBwAHMALgBuAGUAdAAvAHAAcgAvAHMAdgBjAC8AcgBpAGcAaAB0AHMAbQBhAG4AYQBnAG' +
+      'UAcgAuAGEAcwBtAHgAPAAvAEwAQQBfAFUAUgBMAD4APABEAFMAXwBJAEQAPgBBAEgAKwA' +
+      'wADMAagB1AEsAYgBVAEcAYgBIAGwAMQBWAC8AUQBJAHcAUgBBAD0APQA8AC8ARABTAF8A' +
+      'SQBEAD4APAAvAEQAQQBUAEEAPgA8AC8AVwBSAE0ASABFAEEARABFAFIAPgA=';
+
   /** @param {!shaka.extern.Manifest} manifest */
   async function loadAllStreamsFor(manifest) {
     const promises = [];
@@ -113,7 +134,7 @@ describe('MssParser Manifest', () => {
       await Mss.testFails(source, error);
     });
 
-    it('ive content ', async () => {
+    it('live content ', async () => {
       const source = [
         '<SmoothStreamingMedia Duration="1209510000" IsLive="true">',
         '  <StreamIndex Name="audio" Type="audio" Url="uri">',
@@ -417,4 +438,35 @@ describe('MssParser Manifest', () => {
     expect(variant.audio).toBeTruthy();
     expect(variant.video).toBeTruthy();
   });
+
+  it('recognizes PlayReady System ID with mixed cases', async () => {
+    const manifestText = [
+      '<SmoothStreamingMedia Duration="1209510000">',
+      '  <StreamIndex Type="video" Url="uri">',
+      '    <QualityLevel Bitrate="2962000" CodecPrivateData="',
+      h264CodecPrivateData,
+      '" FourCC="H264" MaxHeight="720" MaxWidth="1280"/>',
+      '    <c d="20020000"/>',
+      '  </StreamIndex>',
+      '  <Protection>',
+      '    <ProtectionHeader SystemID="9a04F079-9840-4286-aB92-e65BE0885f95">',
+      protectionHeader,
+      '    </ProtectionHeader>',
+      '  </Protection>',
+      '</SmoothStreamingMedia>',
+    ].join('\n');
+
+    fakeNetEngine.setResponseText('dummy://foo', manifestText);
+
+    /** @type {shaka.extern.Manifest} */
+    const manifest = await parser.start('dummy://foo', playerInterface);
+    const variant = manifest.variants[0];
+    expect(variant.video.drmInfos.length).toBe(1);
+    expect(variant.video.drmInfos[0].keySystem).toBe('com.microsoft.playready');
+    // Also able to parse KID correctly
+    expect(variant.video.drmInfos[0].keyIds.size).toBe(1);
+    // Expected KID: https://testweb.playready.microsoft.com/Content/Content2X
+    expect([...(variant.video.drmInfos[0].keyIds.values())][0]).toBe(
+        '09E367028F33436CA5DD60FFE6671E70'.toLowerCase());
+  });
 });