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.

Typedefs
typedef uint32_t	AVAdler

Functions
AVAdler	av_adler32_update (AVAdler adler, const uint8_t *buf, size_t len) av_pure
	Calculate the Adler32 checksum of a buffer.

Detailed Description

Adler-32 hash function implementation.

Typedef Documentation

AVAdler

typedef uint32_t AVAdler

Definition at line 42 of file adler32.h.

Function Documentation

av_adler32_update()

AVAdler av_adler32_update	(	AVAdler	adler,
		const uint8_t *	buf,
		size_t	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(), filter_frame(), frame_hash(), framecrc_write_header(), framecrc_write_packet(), main(), showinfo_filter(), video_decode(), video_decode_example(), and video_frame_cksum().