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avformat/avio: add a crc callback function for CRC-32 IEEE-LE

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Reviewed-by: Nicolas George <george@nsup.org>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2016-08-04 16:17:09 -03:00
parent f297d1e9e5
commit 155f4e9630
2 changed files with 8 additions and 0 deletions
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2
libavformat/avio_internal.h
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@ -111,6 +111,8 @@ void ffio_init_checksum(AVIOContext *s,
unsigned long ffio_get_checksum(AVIOContext *s);
unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
unsigned int len);
unsigned long ff_crcEDB88320_update(unsigned long checksum, const uint8_t *buf,
unsigned int len);
unsigned long ff_crcA001_update(unsigned long checksum, const uint8_t *buf,
unsigned int len);

6
libavformat/aviobuf.c
View File

@ -560,6 +560,12 @@ unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
return av_crc(av_crc_get_table(AV_CRC_32_IEEE), checksum, buf, len);
}
unsigned long ff_crcEDB88320_update(unsigned long checksum, const uint8_t *buf,
unsigned int len)
{
return av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), checksum, buf, len);
}
unsigned long ff_crcA001_update(unsigned long checksum, const uint8_t *buf,
unsigned int len)
{