mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
9a92aea27b
The current API where the plain size is exposed is not of much use - in most cases it is allocated dynamically anyway. If allocated e.g. on the stack via an uint8_t array, there's no guarantee that the struct's members are aligned properly (unless the array is overallocated and the opaque pointer within it manually aligned to some unspecified alignment). Signed-off-by: Martin Storsjö <martin@martin.st>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_SHA_H
|
|
#define AVUTIL_SHA_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "attributes.h"
|
|
#include "version.h"
|
|
|
|
/**
|
|
* @defgroup lavu_sha SHA
|
|
* @ingroup lavu_crypto
|
|
* @{
|
|
*/
|
|
|
|
#if FF_API_CONTEXT_SIZE
|
|
extern attribute_deprecated const int av_sha_size;
|
|
#endif
|
|
|
|
struct AVSHA;
|
|
|
|
/**
|
|
* Allocate an AVSHA context.
|
|
*/
|
|
struct AVSHA *av_sha_alloc(void);
|
|
|
|
/**
|
|
* Initialize SHA-1 or SHA-2 hashing.
|
|
*
|
|
* @param context pointer to the function context (of size av_sha_size)
|
|
* @param bits number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits)
|
|
* @return zero if initialization succeeded, -1 otherwise
|
|
*/
|
|
int av_sha_init(struct AVSHA* context, int bits);
|
|
|
|
/**
|
|
* Update hash value.
|
|
*
|
|
* @param context hash function context
|
|
* @param data input data to update hash with
|
|
* @param len input data length
|
|
*/
|
|
void av_sha_update(struct AVSHA* context, const uint8_t* data, unsigned int len);
|
|
|
|
/**
|
|
* Finish hashing and output digest value.
|
|
*
|
|
* @param context hash function context
|
|
* @param digest buffer where output digest value is stored
|
|
*/
|
|
void av_sha_final(struct AVSHA* context, uint8_t *digest);
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* AVUTIL_SHA_H */
|