| spandsp 0.0.6
    | 
#include <inttypes.h>#include <stdio.h>#include <string.h>#include "spandsp/telephony.h"#include "spandsp/crc.h"#include "spandsp/bit_operations.h"| Functions | |
| uint32_t | crc_itu32_calc (const uint8_t *buf, int len, uint32_t crc) | 
| Calculate the ITU/CCITT CRC-32 value in buffer. | |
| int | crc_itu32_append (uint8_t *buf, int len) | 
| Append an ITU/CCITT CRC-32 value to a frame. | |
| int | crc_itu32_check (const uint8_t *buf, int len) | 
| Check the ITU/CCITT CRC-32 value in a frame. | |
| uint16_t | crc_itu16_calc (const uint8_t *buf, int len, uint16_t crc) | 
| Calculate the ITU/CCITT CRC-16 value in buffer by whole bytes. | |
| uint16_t | crc_itu16_bits (uint8_t buf, int len, uint16_t crc) | 
| Calculate the ITU/CCITT CRC-16 value of some bits from a byte. | |
| int | crc_itu16_append (uint8_t *buf, int len) | 
| Append an ITU/CCITT CRC-16 value to a frame. | |
| int | crc_itu16_check (const uint8_t *buf, int len) | 
| Check the ITU/CCITT CRC-16 value in a frame. | |
| int crc_itu16_append | ( | uint8_t * | buf, | 
| int | len | ||
| ) | 
Append an ITU/CCITT CRC-16 value to a frame.
| buf | The buffer containing the frame. This must be at least 2 bytes longer than the frame it contains, to allow room for the CRC value. | 
| len | The length of the frame. | 
| uint16_t crc_itu16_bits | ( | uint8_t | buf, | 
| int | len, | ||
| uint16_t | crc | ||
| ) | 
Calculate the ITU/CCITT CRC-16 value of some bits from a byte.
| buf | The buffer containing the byte of data. | 
| len | The number of bits, starting from the LSB. | 
| crc | The initial CRC value. This is usually 0xFFFF, or 0 for a new block (it depends on the application). It is previous returned CRC value for the continuation of a block. | 
| uint16_t crc_itu16_calc | ( | const uint8_t * | buf, | 
| int | len, | ||
| uint16_t | crc | ||
| ) | 
Calculate the ITU/CCITT CRC-16 value in buffer by whole bytes.
| buf | The buffer containing the data. | 
| len | The length of the frame. | 
| crc | The initial CRC value. This is usually 0xFFFF, or 0 for a new block (it depends on the application). It is previous returned CRC value for the continuation of a block. | 
Referenced by adsi_tx_put_message(), and hdlc_tx_frame().
| int crc_itu16_check | ( | const uint8_t * | buf, | 
| int | len | ||
| ) | 
Check the ITU/CCITT CRC-16 value in a frame.
| buf | The buffer containing the frame. | 
| len | The length of the frame. | 
| int crc_itu32_append | ( | uint8_t * | buf, | 
| int | len | ||
| ) | 
Append an ITU/CCITT CRC-32 value to a frame.
| buf | The buffer containing the frame. This must be at least 2 bytes longer than the frame it contains, to allow room for the CRC value. | 
| len | The length of the frame. | 
| uint32_t crc_itu32_calc | ( | const uint8_t * | buf, | 
| int | len, | ||
| uint32_t | crc | ||
| ) | 
Calculate the ITU/CCITT CRC-32 value in buffer.
| buf | The buffer containing the data. | 
| len | The length of the frame. | 
| crc | The initial CRC value. This is usually 0xFFFFFFFF, or 0 for a new block (it depends on the application). It is previous returned CRC value for the continuation of a block. | 
Referenced by hdlc_tx_frame().
| int crc_itu32_check | ( | const uint8_t * | buf, | 
| int | len | ||
| ) | 
Check the ITU/CCITT CRC-32 value in a frame.
| buf | The buffer containing the frame. | 
| len | The length of the frame. |