1 files changed, 146 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/CryptoInfo.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/CryptoInfo.java
new file mode 100644
index 0000000000..1bfb0fb06e
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/decoder/CryptoInfo.java
@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 2016 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 org.mozilla.thirdparty.com.google.android.exoplayer2.decoder;
+
+import android.annotation.TargetApi;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
+
+/**
+ * Compatibility wrapper for {@link android.media.MediaCodec.CryptoInfo}.
+ */
+public final class CryptoInfo {
+
+  /**
+   * The 16 byte initialization vector. If the initialization vector of the content is shorter than
+   * 16 bytes, 0 byte padding is appended to extend the vector to the required 16 byte length.
+   *
+   * @see android.media.MediaCodec.CryptoInfo#iv
+   */
+  public byte[] iv;
+  /**
+   * The 16 byte key id.
+   *
+   * @see android.media.MediaCodec.CryptoInfo#key
+   */
+  public byte[] key;
+  /**
+   * The type of encryption that has been applied. Must be one of the {@link C.CryptoMode} values.
+   *
+   * @see android.media.MediaCodec.CryptoInfo#mode
+   */
+  @C.CryptoMode public int mode;
+  /**
+   * The number of leading unencrypted bytes in each sub-sample. If null, all bytes are treated as
+   * encrypted and {@link #numBytesOfEncryptedData} must be specified.
+   *
+   * @see android.media.MediaCodec.CryptoInfo#numBytesOfClearData
+   */
+  public int[] numBytesOfClearData;
+  /**
+   * The number of trailing encrypted bytes in each sub-sample. If null, all bytes are treated as
+   * clear and {@link #numBytesOfClearData} must be specified.
+   *
+   * @see android.media.MediaCodec.CryptoInfo#numBytesOfEncryptedData
+   */
+  public int[] numBytesOfEncryptedData;
+  /**
+   * The number of subSamples that make up the buffer's contents.
+   *
+   * @see android.media.MediaCodec.CryptoInfo#numSubSamples
+   */
+  public int numSubSamples;
+  /**
+   * @see android.media.MediaCodec.CryptoInfo.Pattern
+   */
+  public int encryptedBlocks;
+  /**
+   * @see android.media.MediaCodec.CryptoInfo.Pattern
+   */
+  public int clearBlocks;
+
+  private final android.media.MediaCodec.CryptoInfo frameworkCryptoInfo;
+  private final PatternHolderV24 patternHolder;
+
+  public CryptoInfo() {
+    frameworkCryptoInfo = new android.media.MediaCodec.CryptoInfo();
+    patternHolder = Util.SDK_INT >= 24 ? new PatternHolderV24(frameworkCryptoInfo) : null;
+  }
+
+  /**
+   * @see android.media.MediaCodec.CryptoInfo#set(int, int[], int[], byte[], byte[], int)
+   */
+  public void set(int numSubSamples, int[] numBytesOfClearData, int[] numBytesOfEncryptedData,
+      byte[] key, byte[] iv, @C.CryptoMode int mode, int encryptedBlocks, int clearBlocks) {
+    this.numSubSamples = numSubSamples;
+    this.numBytesOfClearData = numBytesOfClearData;
+    this.numBytesOfEncryptedData = numBytesOfEncryptedData;
+    this.key = key;
+    this.iv = iv;
+    this.mode = mode;
+    this.encryptedBlocks = encryptedBlocks;
+    this.clearBlocks = clearBlocks;
+    // Update frameworkCryptoInfo fields directly because CryptoInfo.set performs an unnecessary
+    // object allocation on Android N.
+    frameworkCryptoInfo.numSubSamples = numSubSamples;
+    frameworkCryptoInfo.numBytesOfClearData = numBytesOfClearData;
+    frameworkCryptoInfo.numBytesOfEncryptedData = numBytesOfEncryptedData;
+    frameworkCryptoInfo.key = key;
+    frameworkCryptoInfo.iv = iv;
+    frameworkCryptoInfo.mode = mode;
+    if (Util.SDK_INT >= 24) {
+      patternHolder.set(encryptedBlocks, clearBlocks);
+    }
+  }
+
+  /**
+   * Returns an equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
+   *
+   * <p>Successive calls to this method on a single {@link CryptoInfo} will return the same
+   * instance. Changes to the {@link CryptoInfo} will be reflected in the returned object. The
+   * return object should not be modified directly.
+   *
+   * @return The equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
+   */
+  public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfo() {
+    return frameworkCryptoInfo;
+  }
+
+  /** @deprecated Use {@link #getFrameworkCryptoInfo()}. */
+  @Deprecated
+  public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfoV16() {
+    return getFrameworkCryptoInfo();
+  }
+
+  @TargetApi(24)
+  private static final class PatternHolderV24 {
+
+    private final android.media.MediaCodec.CryptoInfo frameworkCryptoInfo;
+    private final android.media.MediaCodec.CryptoInfo.Pattern pattern;
+
+    private PatternHolderV24(android.media.MediaCodec.CryptoInfo frameworkCryptoInfo) {
+      this.frameworkCryptoInfo = frameworkCryptoInfo;
+      pattern = new android.media.MediaCodec.CryptoInfo.Pattern(0, 0);
+    }
+
+    private void set(int encryptedBlocks, int clearBlocks) {
+      pattern.set(encryptedBlocks, clearBlocks);
+      frameworkCryptoInfo.setPattern(pattern);
+    }
+
+  }
+
+}