Pass whole PSSH box to MediaDrm (except in the WV+L case).

This fixes SmoothStreaming on AndroidTV, and also removes a
warning that gets logged when using Widevine/FMP4.

library/src/main/java/com/google/android/exoplayer/FrameworkSampleSource.java

@@ -19,6 +19,7 @@ import com.google.android.exoplayer.SampleSource.SampleSourceReader;
 import com.google.android.exoplayer.drm.DrmInitData;
 import com.google.android.exoplayer.extractor.ExtractorSampleSource;
 import com.google.android.exoplayer.extractor.mp4.Mp4Extractor;
+import com.google.android.exoplayer.extractor.mp4.PsshAtomUtil;
 import com.google.android.exoplayer.util.Assertions;
 import com.google.android.exoplayer.util.MimeTypes;
 import com.google.android.exoplayer.util.Util;
@@ -266,7 +267,10 @@ public final class FrameworkSampleSource implements SampleSource, SampleSourceRe
       return null;
     }
     DrmInitData.Mapped drmInitData = new DrmInitData.Mapped(MimeTypes.VIDEO_MP4);
-    drmInitData.putAll(psshInfo);
+    for (UUID uuid : psshInfo.keySet()) {
+      byte[] psshAtom = PsshAtomUtil.buildPsshAtom(uuid, psshInfo.get(uuid));
+      drmInitData.put(uuid, psshAtom);
+    }
     return drmInitData;
   }
 

library/src/main/java/com/google/android/exoplayer/dash/mpd/MediaPresentationDescriptionParser.java

@@ -21,10 +21,10 @@ import com.google.android.exoplayer.dash.mpd.SegmentBase.SegmentList;
 import com.google.android.exoplayer.dash.mpd.SegmentBase.SegmentTemplate;
 import com.google.android.exoplayer.dash.mpd.SegmentBase.SegmentTimelineElement;
 import com.google.android.exoplayer.dash.mpd.SegmentBase.SingleSegmentBase;
+import com.google.android.exoplayer.extractor.mp4.PsshAtomUtil;
 import com.google.android.exoplayer.upstream.UriLoadable;
 import com.google.android.exoplayer.util.Assertions;
 import com.google.android.exoplayer.util.MimeTypes;
-import com.google.android.exoplayer.util.ParsableByteArray;
 import com.google.android.exoplayer.util.UriUtil;
 import com.google.android.exoplayer.util.Util;
 
@@ -258,22 +258,20 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
       throws XmlPullParserException, IOException {
     String schemeIdUri = xpp.getAttributeValue(null, "schemeIdUri");
     UUID uuid = null;
-    byte[] data = null;
+    byte[] psshAtom = null;
     do {
       xpp.next();
       // The cenc:pssh element is defined in 23001-7:2015
       if (isStartTag(xpp, "cenc:pssh") && xpp.next() == XmlPullParser.TEXT) {
-        byte[] decodedData = Base64.decode(xpp.getText(), Base64.DEFAULT);
-        ParsableByteArray psshAtom = new ParsableByteArray(decodedData);
-        psshAtom.skipBytes(12);
-        uuid = new UUID(psshAtom.readLong(), psshAtom.readLong());
-        int dataSize = psshAtom.readInt();
-        data = new byte[dataSize];
-        psshAtom.readBytes(data, 0, dataSize);
+        psshAtom = Base64.decode(xpp.getText(), Base64.DEFAULT);
+        uuid = PsshAtomUtil.parseUuid(psshAtom);
+        if (uuid == null) {
+          throw new ParserException("Invalid pssh atom in cenc:pssh element");
+        }
       }
     } while (!isEndTag(xpp, "ContentProtection"));
 
-    return buildContentProtection(schemeIdUri, uuid, data);
+    return buildContentProtection(schemeIdUri, uuid, psshAtom);
   }
 
   protected ContentProtection buildContentProtection(String schemeIdUri, UUID uuid, byte[] data) {

library/src/main/java/com/google/android/exoplayer/drm/DrmInitData.java

@@ -70,15 +70,6 @@ public abstract class DrmInitData {
       schemeData.put(schemeUuid, data);
     }
 
-    /**
-     * Inserts scheme specific initialization data.
-     *
-     * @param data A mapping from scheme UUID to initialization data.
-     */
-    public void putAll(Map<UUID, byte[]> data) {
-      schemeData.putAll(data);
-    }
-
   }
 
   /**

library/src/main/java/com/google/android/exoplayer/drm/StreamingDrmSessionManager.java

@@ -15,6 +15,9 @@
  */
 package com.google.android.exoplayer.drm;
 
+import com.google.android.exoplayer.extractor.mp4.PsshAtomUtil;
+import com.google.android.exoplayer.util.Util;
+
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.media.DeniedByServerException;
@@ -96,7 +99,7 @@ public class StreamingDrmSessionManager implements DrmSessionManager {
   private MediaCrypto mediaCrypto;
   private Exception lastException;
   private String mimeType;
-  private byte[] schemePsshData;
+  private byte[] schemeData;
   private byte[] sessionId;
 
   /**
@@ -265,13 +268,22 @@ public class StreamingDrmSessionManager implements DrmSessionManager {
       requestHandlerThread.start();
       postRequestHandler = new PostRequestHandler(requestHandlerThread.getLooper());
     }
-    if (this.schemePsshData == null) {
+    if (schemeData == null) {
       mimeType = drmInitData.mimeType;
-      schemePsshData = drmInitData.get(uuid);
-      if (schemePsshData == null) {
+      schemeData = drmInitData.get(uuid);
+      if (schemeData == null) {
         onError(new IllegalStateException("Media does not support uuid: " + uuid));
         return;
       }
+      if (Util.SDK_INT < 21) {
+        // Prior to L the Widevine CDM required data to be extracted from the PSSH atom.
+        byte[] psshData = PsshAtomUtil.parseSchemeSpecificData(schemeData, WIDEVINE_UUID);
+        if (psshData == null) {
+          // Extraction failed. schemeData isn't a Widevine PSSH atom, so leave it unchanged.
+        } else {
+          schemeData = psshData;
+        }
+      }
     }
     state = STATE_OPENING;
     openInternal(true);
@@ -290,7 +302,7 @@ public class StreamingDrmSessionManager implements DrmSessionManager {
     postRequestHandler = null;
     requestHandlerThread.quit();
     requestHandlerThread = null;
-    schemePsshData = null;
+    schemeData = null;
     mediaCrypto = null;
     lastException = null;
     if (sessionId != null) {
@@ -352,7 +364,7 @@ public class StreamingDrmSessionManager implements DrmSessionManager {
   private void postKeyRequest() {
     KeyRequest keyRequest;
     try {
-      keyRequest = mediaDrm.getKeyRequest(sessionId, schemePsshData, mimeType,
+      keyRequest = mediaDrm.getKeyRequest(sessionId, schemeData, mimeType,
           MediaDrm.KEY_TYPE_STREAMING, optionalKeyRequestParameters);
       postRequestHandler.obtainMessage(MSG_KEYS, keyRequest).sendToTarget();
     } catch (NotProvisionedException e) {

library/src/main/java/com/google/android/exoplayer/extractor/mp4/FragmentedMp4Extractor.java

@@ -35,7 +35,6 @@ import java.io.IOException;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Stack;
-import java.util.UUID;
 
 /**
  * Facilitates the extraction of data from the fragmented mp4 container format.
@@ -250,16 +249,11 @@ public final class FragmentedMp4Extractor implements Extractor {
     for (int i = 0; i < moovChildrenSize; i++) {
       LeafAtom child = moovChildren.get(i);
       if (child.type == Atom.TYPE_pssh) {
-        ParsableByteArray psshAtom = child.data;
-        psshAtom.setPosition(Atom.FULL_HEADER_SIZE);
-        UUID uuid = new UUID(psshAtom.readLong(), psshAtom.readLong());
-        int dataSize = psshAtom.readInt();
-        byte[] data = new byte[dataSize];
-        psshAtom.readBytes(data, 0, dataSize);
         if (drmInitData == null) {
           drmInitData = new DrmInitData.Mapped(MimeTypes.VIDEO_MP4);
         }
-        drmInitData.put(uuid, data);
+        byte[] psshData = child.data.data;
+        drmInitData.put(PsshAtomUtil.parseUuid(psshData), psshData);
       }
     }
     if (drmInitData != null) {

library/src/main/java/com/google/android/exoplayer/extractor/mp4/PsshAtomUtil.java

@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.android.exoplayer.extractor.mp4;
+
+import com.google.android.exoplayer.util.ParsableByteArray;
+
+import java.nio.ByteBuffer;
+import java.util.UUID;
+
+/**
+ * Utility methods for handling PSSH atoms.
+ */
+public final class PsshAtomUtil {
+
+  private PsshAtomUtil() {}
+
+  /**
+   * Builds a PSSH atom for a given {@link UUID} containing the given scheme specific data.
+   *
+   * @param uuid The UUID of the scheme.
+   * @param data The scheme specific data.
+   * @return The PSSH atom.
+   */
+  public static byte[] buildPsshAtom(UUID uuid, byte[] data) {
+    int psshBoxLength = Atom.FULL_HEADER_SIZE + 16 /* UUID */ + 4 /* DataSize */ + data.length;
+    ByteBuffer psshBox = ByteBuffer.allocate(psshBoxLength);
+    psshBox.putInt(psshBoxLength);
+    psshBox.putInt(Atom.TYPE_pssh);
+    psshBox.putInt(0 /* version=0, flags=0 */);
+    psshBox.putLong(uuid.getMostSignificantBits());
+    psshBox.putLong(uuid.getLeastSignificantBits());
+    psshBox.putInt(data.length);
+    psshBox.put(data);
+    return psshBox.array();
+  }
+
+  /**
+   * Parses the UUID from a PSSH atom.
+   * <p>
+   * The UUID is only parsed if the data is a valid PSSH atom.
+   *
+   * @param atom The atom to parse.
+   * @return The parsed UUID. Null if the data is not a valid PSSH atom.
+   */
+  public static UUID parseUuid(byte[] atom) {
+    ParsableByteArray atomData = new ParsableByteArray(atom);
+    if (!isPsshAtom(atomData, null)) {
+      return null;
+    }
+    atomData.setPosition(Atom.FULL_HEADER_SIZE);
+    return new UUID(atomData.readLong(), atomData.readLong());
+  }
+
+  /**
+   * Parses the scheme specific data from a PSSH atom.
+   * <p>
+   * The scheme specific data is only parsed if the data is a valid PSSH atom matching the given
+   * UUID, or if the data is a valid PSSH atom of any type in the case that the passed UUID is null.
+   *
+   * @param atom The atom to parse.
+   * @param uuid The required UUID of the PSSH atom, or null to accept any UUID.
+   * @return The parsed scheme specific data. Null if the data is not a valid PSSH atom or if its
+   *     UUID does not match the one provided.
+   */
+  public static byte[] parseSchemeSpecificData(byte[] atom, UUID uuid) {
+    ParsableByteArray atomData = new ParsableByteArray(atom);
+    if (!isPsshAtom(atomData, uuid)) {
+      return null;
+    }
+    atomData.setPosition(Atom.FULL_HEADER_SIZE + 16 /* UUID */);
+    int dataSize = atomData.readInt();
+    byte[] data = new byte[dataSize];
+    atomData.readBytes(data, 0, dataSize);
+    return data;
+  }
+
+  private static boolean isPsshAtom(ParsableByteArray atomData, UUID uuid) {
+    if (atomData.limit() < Atom.FULL_HEADER_SIZE + 16 /* UUID */ + 4 /* DataSize */) {
+      // Data too short.
+      return false;
+    }
+    atomData.setPosition(0);
+    int atomSize = atomData.readInt();
+    if (atomSize != atomData.bytesLeft() + 4) {
+      // Not an atom, or incorrect atom size.
+      return false;
+    }
+    int atomType = atomData.readInt();
+    if (atomType != Atom.TYPE_pssh) {
+      // Not an atom, or incorrect atom type.
+      return false;
+    }
+    atomData.setPosition(Atom.FULL_HEADER_SIZE);
+    if (uuid == null) {
+      atomData.skipBytes(16);
+    } else if (atomData.readLong() != uuid.getMostSignificantBits()
+        || atomData.readLong() != uuid.getLeastSignificantBits()) {
+      // UUID doesn't match.
+      return false;
+    }
+    int dataSize = atomData.readInt();
+    if (dataSize != atomData.bytesLeft()) {
+      // Incorrect dataSize.
+      return false;
+    }
+    return true;
+  }
+
+}

library/src/main/java/com/google/android/exoplayer/smoothstreaming/SmoothStreamingManifestParser.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer.smoothstreaming;
 
 import com.google.android.exoplayer.ParserException;
+import com.google.android.exoplayer.extractor.mp4.PsshAtomUtil;
 import com.google.android.exoplayer.smoothstreaming.SmoothStreamingManifest.ProtectionElement;
 import com.google.android.exoplayer.smoothstreaming.SmoothStreamingManifest.StreamElement;
 import com.google.android.exoplayer.smoothstreaming.SmoothStreamingManifest.TrackElement;
@@ -423,7 +424,7 @@ public class SmoothStreamingManifestParser implements UriLoadable.Parser<SmoothS
 
     @Override
     public Object build() {
-      return new ProtectionElement(uuid, initData);
+      return new ProtectionElement(uuid, PsshAtomUtil.buildPsshAtom(uuid, initData));
     }
 
   }