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Rename ffmpeg-4.2-fit to ffmpeg-4-fit
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720 changed files with 14 additions and 14 deletions
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trunk/3rdparty/ffmpeg-4-fit/libavutil/hmac.h
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trunk/3rdparty/ffmpeg-4-fit/libavutil/hmac.h
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/*
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* Copyright (C) 2012 Martin Storsjo
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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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#ifndef AVUTIL_HMAC_H
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#define AVUTIL_HMAC_H
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#include <stdint.h>
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#include "version.h"
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/**
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* @defgroup lavu_hmac HMAC
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* @ingroup lavu_crypto
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* @{
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*/
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enum AVHMACType {
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AV_HMAC_MD5,
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AV_HMAC_SHA1,
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AV_HMAC_SHA224,
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AV_HMAC_SHA256,
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AV_HMAC_SHA384,
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AV_HMAC_SHA512,
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};
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typedef struct AVHMAC AVHMAC;
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/**
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* Allocate an AVHMAC context.
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* @param type The hash function used for the HMAC.
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*/
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AVHMAC *av_hmac_alloc(enum AVHMACType type);
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/**
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* Free an AVHMAC context.
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* @param ctx The context to free, may be NULL
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*/
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void av_hmac_free(AVHMAC *ctx);
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/**
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* Initialize an AVHMAC context with an authentication key.
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* @param ctx The HMAC context
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* @param key The authentication key
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* @param keylen The length of the key, in bytes
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*/
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void av_hmac_init(AVHMAC *ctx, const uint8_t *key, unsigned int keylen);
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/**
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* Hash data with the HMAC.
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* @param ctx The HMAC context
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* @param data The data to hash
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* @param len The length of the data, in bytes
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*/
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void av_hmac_update(AVHMAC *ctx, const uint8_t *data, unsigned int len);
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/**
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* Finish hashing and output the HMAC digest.
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* @param ctx The HMAC context
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* @param out The output buffer to write the digest into
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* @param outlen The length of the out buffer, in bytes
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* @return The number of bytes written to out, or a negative error code.
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*/
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int av_hmac_final(AVHMAC *ctx, uint8_t *out, unsigned int outlen);
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/**
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* Hash an array of data with a key.
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* @param ctx The HMAC context
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* @param data The data to hash
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* @param len The length of the data, in bytes
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* @param key The authentication key
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* @param keylen The length of the key, in bytes
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* @param out The output buffer to write the digest into
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* @param outlen The length of the out buffer, in bytes
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* @return The number of bytes written to out, or a negative error code.
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*/
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int av_hmac_calc(AVHMAC *ctx, const uint8_t *data, unsigned int len,
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const uint8_t *key, unsigned int keylen,
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uint8_t *out, unsigned int outlen);
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/**
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* @}
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*/
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#endif /* AVUTIL_HMAC_H */
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