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# group `sysex_tools` {#group__sysex__tools}
## Summary
Members | Descriptions
--------------------------------|---------------------------------------------
`public uint16_t `[`sysex_encoded_length`](#group__sysex__tools_1ga061e5607030412d6e62e2390d8013f0a)`(uint16_t decoded_length)` | Compute the length of a message after it is encoded.
`public uint16_t `[`sysex_decoded_length`](#group__sysex__tools_1ga121fc227d3acc1c0ea08c9a5c26fa3b0)`(uint16_t encoded_length)` | Compute the length of a message after it is decoded.
`public uint16_t `[`sysex_encode`](#group__sysex__tools_1ga54d77f8d32f92a6f329daefa2b314742)`(uint8_t * encoded,const uint8_t * source,uint16_t length)` | Encode data so that it can be transmitted safely in a sysex message.
`public uint16_t `[`sysex_decode`](#group__sysex__tools_1gaaad1d9ba2d5eca709a0ab4ba40662229)`(uint8_t * decoded,const uint8_t * source,uint16_t length)` | Decode encoded data.
## Members
#### `public uint16_t `[`sysex_encoded_length`](#group__sysex__tools_1ga061e5607030412d6e62e2390d8013f0a)`(uint16_t decoded_length)` {#group__sysex__tools_1ga061e5607030412d6e62e2390d8013f0a}
Compute the length of a message after it is encoded.
#### Parameters
* `decoded_length` The length, in bytes, of the message to encode.
#### Returns
The length, in bytes, of the message after encodeing.
#### `public uint16_t `[`sysex_decoded_length`](#group__sysex__tools_1ga121fc227d3acc1c0ea08c9a5c26fa3b0)`(uint16_t encoded_length)` {#group__sysex__tools_1ga121fc227d3acc1c0ea08c9a5c26fa3b0}
Compute the length of a message after it is decoded.
#### Parameters
* `encoded_length` The length, in bytes, of the encoded message.
#### Returns
The length, in bytes, of the message after it is decoded.
#### `public uint16_t `[`sysex_encode`](#group__sysex__tools_1ga54d77f8d32f92a6f329daefa2b314742)`(uint8_t * encoded,const uint8_t * source,uint16_t length)` {#group__sysex__tools_1ga54d77f8d32f92a6f329daefa2b314742}
Encode data so that it can be transmitted safely in a sysex message.
#### Parameters
* `encoded` The output data buffer, must be at least sysex_encoded_length(length) bytes long.
* `source` The input buffer of data to be encoded.
* `length` The number of bytes from the input buffer to encode.
#### Returns
number of bytes encoded.
#### `public uint16_t `[`sysex_decode`](#group__sysex__tools_1gaaad1d9ba2d5eca709a0ab4ba40662229)`(uint8_t * decoded,const uint8_t * source,uint16_t length)` {#group__sysex__tools_1gaaad1d9ba2d5eca709a0ab4ba40662229}
Decode encoded data.
#### Parameters
* `decoded` The output data buffer, must be at least sysex_decoded_length(length) bytes long.
* `source` The input buffer of data to be decoded.
* `length` The number of bytes from the input buffer to decode.
#### Returns
number of bytes decoded.
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