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65 lines
2.0 KiB
65 lines
2.0 KiB
/* |
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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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