Adler-32

Adler-32 hash function implementation. More...

Files
file	adler32.c
	Computes the Adler-32 checksum of a data stream.
file	adler32.h
	Public header for Adler-32 hash function implementation.

Functions
unsigned long	av_adler32_update (unsigned long adler, const uint8_t *buf, unsigned int len) av_pure
	Calculate the Adler32 checksum of a buffer. More...

Detailed Description

Adler-32 hash function implementation.

Function Documentation

av_adler32_update()

unsigned long av_adler32_update	(	unsigned long	adler,
		const uint8_t *	buf,
		unsigned int	len
	)

Calculate the Adler32 checksum of a buffer.

Passing the return value to a subsequent av_adler32_update() call allows the checksum of multiple buffers to be calculated as though they were concatenated.

Parameters

adler	initial checksum value
buf	pointer to input buffer
len	size of input buffer

Returns

updated checksum

Definition at line 44 of file adler32.c.

Referenced by av_hash_update(), compute_crc_of_packets(), crc_write_packet(), filter_frame(), framecrc_write_header(), framecrc_write_packet(), main(), video_decode(), video_decode_example(), and video_frame_cksum().