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66 lines
2.0 KiB
66 lines
2.0 KiB
3 years ago
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/*
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* Apple HTTP Live Streaming Sample Encryption/Decryption
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*
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* Copyright (c) 2021 Nachiket Tarate
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Apple HTTP Live Streaming Sample Encryption
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* https://developer.apple.com/library/ios/documentation/AudioVideo/Conceptual/HLS_Sample_Encryption
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*/
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#ifndef AVFORMAT_HLS_SAMPLE_ENCRYPTION_H
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#define AVFORMAT_HLS_SAMPLE_ENCRYPTION_H
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#include <stdint.h>
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#include "avformat.h"
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#include "libavcodec/avcodec.h"
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#include "libavutil/aes.h"
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#define HLS_MAX_ID3_TAGS_DATA_LEN 138
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#define HLS_MAX_AUDIO_SETUP_DATA_LEN 10
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typedef struct HLSCryptoContext {
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struct AVAES *aes_ctx;
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uint8_t key[16];
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uint8_t iv[16];
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} HLSCryptoContext;
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typedef struct HLSAudioSetupInfo {
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enum AVCodecID codec_id;
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uint32_t codec_tag;
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uint16_t priming;
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uint8_t version;
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uint8_t setup_data_length;
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uint8_t setup_data[HLS_MAX_AUDIO_SETUP_DATA_LEN];
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} HLSAudioSetupInfo;
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void ff_hls_senc_read_audio_setup_info(HLSAudioSetupInfo *info, const uint8_t *buf, size_t size);
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int ff_hls_senc_parse_audio_setup_info(AVStream *st, HLSAudioSetupInfo *info);
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int ff_hls_senc_decrypt_frame(enum AVCodecID codec_id, HLSCryptoContext *crypto_ctx, AVPacket *pkt);
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#endif /* AVFORMAT_HLS_SAMPLE_ENCRYPTION_H */
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