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Add LocalMediaDrmCallback. Useful for providing local keys.
Issue: #3178 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=166330215
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library/core/src/main/java/com/google/android/exoplayer2/drm/LocalMediaDrmCallback.java
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/* | ||
* Copyright (C) 2017 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.exoplayer2.drm; | ||
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import com.google.android.exoplayer2.drm.ExoMediaDrm.KeyRequest; | ||
import com.google.android.exoplayer2.drm.ExoMediaDrm.ProvisionRequest; | ||
import com.google.android.exoplayer2.util.Assertions; | ||
import java.io.IOException; | ||
import java.util.UUID; | ||
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/** | ||
* A {@link MediaDrmCallback} that provides a fixed response to key requests. Provisioning is not | ||
* supported. This implementation is primarily useful for providing locally stored keys to decrypt | ||
* ClearKey protected content. It is not suitable for use with Widevine or PlayReady protected | ||
* content. | ||
*/ | ||
public final class LocalMediaDrmCallback implements MediaDrmCallback { | ||
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private final byte[] keyResponse; | ||
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/** | ||
* @param keyResponse The fixed response for all key requests. | ||
*/ | ||
public LocalMediaDrmCallback(byte[] keyResponse) { | ||
this.keyResponse = Assertions.checkNotNull(keyResponse); | ||
} | ||
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@Override | ||
public byte[] executeProvisionRequest(UUID uuid, ProvisionRequest request) throws IOException { | ||
throw new UnsupportedOperationException(); | ||
} | ||
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@Override | ||
public byte[] executeKeyRequest(UUID uuid, KeyRequest request) throws Exception { | ||
return keyResponse; | ||
} | ||
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} |