1 /* 2 * copyright (c) 2015 rcombs 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #ifndef AVUTIL_AES_INTERNAL_H 22 #define AVUTIL_AES_INTERNAL_H 23 24 #include "mem_internal.h" 25 #include <stdint.h> 26 27 typedef union { 28 uint64_t u64[2]; 29 uint32_t u32[4]; 30 uint8_t u8x4[4][4]; 31 uint8_t u8[16]; 32 } av_aes_block; 33 34 typedef struct AVAES { 35 // Note: round_key[16] is accessed in the init code, but this only 36 // overwrites state, which does not matter (see also commit ba554c0). 37 DECLARE_ALIGNED(16, av_aes_block, round_key)[15]; 38 DECLARE_ALIGNED(16, av_aes_block, state)[2]; 39 int rounds; 40 void (*crypt)(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int rounds); 41 } AVAES; 42 43 #endif /* AVUTIL_AES_INTERNAL_H */ 44