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66 lines
2.0 KiB
66 lines
2.0 KiB
/*
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* Copyright (C) 2017 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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#ifndef HLS_SAMPLE_AES_PROCESSOR_H_
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#define HLS_SAMPLE_AES_PROCESSOR_H_
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#include <media/stagefright/foundation/AMessage.h>
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#include <media/stagefright/foundation/AString.h>
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#include <openssl/aes.h>
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#include <utils/Errors.h>
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#include <utils/List.h>
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#include <utils/RefBase.h>
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#include <utils/Vector.h>
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#include "SampleDecryptor.h"
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namespace android {
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struct HlsSampleDecryptor : SampleDecryptor {
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HlsSampleDecryptor();
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explicit HlsSampleDecryptor(const sp<AMessage> &sampleAesKeyItem);
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virtual void signalNewSampleAesKey(const sp<AMessage> &sampleAesKeyItem);
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virtual size_t processNal(uint8_t *nalData, size_t nalSize);
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virtual void processAAC(size_t adtsHdrSize, uint8_t *data, size_t size);
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virtual void processAC3(uint8_t *data, size_t size);
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static AString aesBlockToStr(uint8_t block[AES_BLOCK_SIZE]);
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private:
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size_t unescapeStream(uint8_t *data, size_t limit) const;
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size_t findNextUnescapeIndex(uint8_t *data, size_t offset, size_t limit) const;
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status_t decryptBlock(uint8_t *buffer, size_t size, uint8_t AESInitVec[AES_BLOCK_SIZE]);
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static const int VIDEO_CLEAR_LEAD = 32;
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static const int AUDIO_CLEAR_LEAD = 16;
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AES_KEY mAesKey;
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uint8_t mAESInitVec[AES_BLOCK_SIZE];
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bool mValidKeyInfo;
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DISALLOW_EVIL_CONSTRUCTORS(HlsSampleDecryptor);
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};
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} // namespace android
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#endif // HLS_SAMPLE_AES_PROCESSOR_H_
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