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116 lines
3.6 KiB
Java
116 lines
3.6 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.exoplayer;
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import com.google.android.exoplayer.util.Util;
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import android.annotation.TargetApi;
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import android.media.MediaExtractor;
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/**
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* Compatibility wrapper around {@link android.media.MediaCodec.CryptoInfo}.
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*/
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public final class CryptoInfo {
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/**
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* @see android.media.MediaCodec.CryptoInfo#iv
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*/
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public byte[] iv;
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/**
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* @see android.media.MediaCodec.CryptoInfo#key
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*/
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public byte[] key;
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/**
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* @see android.media.MediaCodec.CryptoInfo#mode
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*/
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public int mode;
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/**
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* @see android.media.MediaCodec.CryptoInfo#numBytesOfClearData
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*/
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public int[] numBytesOfClearData;
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/**
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* @see android.media.MediaCodec.CryptoInfo#numBytesOfEncryptedData
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*/
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public int[] numBytesOfEncryptedData;
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/**
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* @see android.media.MediaCodec.CryptoInfo#numSubSamples
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*/
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public int numSubSamples;
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private final android.media.MediaCodec.CryptoInfo frameworkCryptoInfo;
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public CryptoInfo() {
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frameworkCryptoInfo = Util.SDK_INT >= 16 ? newFrameworkCryptoInfoV16() : null;
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}
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/**
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* @see android.media.MediaCodec.CryptoInfo#set(int, int[], int[], byte[], byte[], int)
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*/
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public void set(int numSubSamples, int[] numBytesOfClearData, int[] numBytesOfEncryptedData,
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byte[] key, byte[] iv, int mode) {
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this.numSubSamples = numSubSamples;
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this.numBytesOfClearData = numBytesOfClearData;
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this.numBytesOfEncryptedData = numBytesOfEncryptedData;
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this.key = key;
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this.iv = iv;
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this.mode = mode;
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if (Util.SDK_INT >= 16) {
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updateFrameworkCryptoInfoV16();
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}
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}
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/**
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* Equivalent to {@link MediaExtractor#getSampleCryptoInfo(android.media.MediaCodec.CryptoInfo)}.
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*
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* @param extractor The extractor from which to retrieve the crypto information.
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*/
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@TargetApi(16)
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public void setFromExtractorV16(MediaExtractor extractor) {
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extractor.getSampleCryptoInfo(frameworkCryptoInfo);
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numSubSamples = frameworkCryptoInfo.numSubSamples;
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numBytesOfClearData = frameworkCryptoInfo.numBytesOfClearData;
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numBytesOfEncryptedData = frameworkCryptoInfo.numBytesOfEncryptedData;
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key = frameworkCryptoInfo.key;
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iv = frameworkCryptoInfo.iv;
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mode = frameworkCryptoInfo.mode;
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}
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/**
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* Returns an equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
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* <p>
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* Successive calls to this method on a single {@link CryptoInfo} will return the same instance.
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* Changes to the {@link CryptoInfo} will be reflected in the returned object. The return object
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* should not be modified directly.
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*
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* @return The equivalent {@link android.media.MediaCodec.CryptoInfo} instance.
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*/
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@TargetApi(16)
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public android.media.MediaCodec.CryptoInfo getFrameworkCryptoInfoV16() {
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return frameworkCryptoInfo;
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}
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@TargetApi(16)
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private android.media.MediaCodec.CryptoInfo newFrameworkCryptoInfoV16() {
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return new android.media.MediaCodec.CryptoInfo();
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}
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@TargetApi(16)
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private void updateFrameworkCryptoInfoV16() {
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frameworkCryptoInfo.set(numSubSamples, numBytesOfClearData, numBytesOfEncryptedData, key, iv,
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mode);
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}
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}
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