snap.c File Reference
Source file of the libSNAP library. Refer to the library documentation for details. More...
Include dependency graph for snap.c:
Functions | |
Functions that require a frame structure (snap_frame_t) | |
| int16_t | snap_init (snap_frame_t *frame, uint8_t *buffer, const uint16_t maxSize) |
| Initialize the frame structure. More... | |
| void | snap_reset (snap_frame_t *frame) |
| Reset the frame size and status. The other variables of the frame remain unchanged. More... | |
| int8_t | snap_decode (snap_frame_t *frame, const uint8_t newByte) |
| Detect, decode, validate and store a frame, one byte at a time. More... | |
| int8_t | snap_encapsulate (snap_frame_t *frame, snap_fields_t *fields) |
| Encapsulate a new frame into the buffer (if there is enough space). Update the frame status and size according to the result. More... | |
| int16_t | snap_getField (const snap_frame_t *frame, void *fieldContent, const uint8_t fieldType) |
| Get the content of a selected frame field. More... | |
| int8_t | snap_calculateHash (const snap_frame_t *frame, uint32_t *hash) |
| Select the error detection method based on the EDM bits and calculate the hash value of a frame. More... | |
Functions that do NOT require a frame structure | |
| uint16_t | snap_removePaddingBytes (uint8_t *data, uint16_t size, const bool paddingAfter) |
| Remove the padding bytes (SNAP_PADDING) of a frame payload (if there are any). More... | |
| uint8_t | snap_getNdbFromDataSize (const uint16_t dataSize) |
| Get the NDB bits of the HDB1 byte based on the number of data bytes (with or without padding bytes). More... | |
| uint16_t | snap_getDataSizeFromNdb (const uint8_t ndb) |
| Get the number of data bytes based on the NDB bits of the HDB1 byte. More... | |
| uint8_t | snap_getHashSizeFromEdm (const uint8_t edm) |
| Get the hash value size of the frame based on the EDM bits of the HDB1 byte. More... | |
| uint8_t | snap_calculateChecksum8 (const uint8_t *data, const uint16_t size) |
| Calculate the 8-bit checksum of a byte array. More... | |
| uint8_t | snap_calculateCrc8 (const uint8_t *data, const uint16_t size) |
| Calculate the 8-bit CRC of a byte array. More... | |
| uint16_t | snap_calculateCrc16 (const uint8_t *data, const uint16_t size) |
| Calculate the 16-bit CRC of a byte array. More... | |
| uint32_t | snap_calculateCrc32 (const uint8_t *data, const uint16_t size) |
| Calculate the 32-bit CRC of a byte array. More... | |
| uint32_t | snap_calculateUserHash (const uint8_t *data, const uint16_t size) |
| Calculate the hash value of a byte array using a user-defined algorithm. More... | |
Detailed Description
Source file of the libSNAP library. Refer to the library documentation for details.
