diff options
Diffstat (limited to 'tmk_core/protocol/lufa/midi/sysex_tools.c')
-rwxr-xr-x | tmk_core/protocol/lufa/midi/sysex_tools.c | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/tmk_core/protocol/lufa/midi/sysex_tools.c b/tmk_core/protocol/lufa/midi/sysex_tools.c deleted file mode 100755 index 7563a3e2a..000000000 --- a/tmk_core/protocol/lufa/midi/sysex_tools.c +++ /dev/null @@ -1,99 +0,0 @@ -//midi for embedded chips, -//Copyright 2010 Alex Norman -// -//This file is part of avr-midi. -// -//avr-midi is free software: you can redistribute it and/or modify -//it under the terms of the GNU General Public License as published by -//the Free Software Foundation, either version 3 of the License, or -//(at your option) any later version. -// -//avr-midi is distributed in the hope that it will be useful, -//but WITHOUT ANY WARRANTY; without even the implied warranty of -//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -//GNU General Public License for more details. -// -//You should have received a copy of the GNU General Public License -//along with avr-midi. If not, see <http://www.gnu.org/licenses/>. - -#include "sysex_tools.h" - -uint16_t sysex_encoded_length(uint16_t decoded_length){ - uint8_t remainder = decoded_length % 7; - if (remainder) - return (decoded_length / 7) * 8 + remainder + 1; - else - return (decoded_length / 7) * 8; -} - -uint16_t sysex_decoded_length(uint16_t encoded_length){ - uint8_t remainder = encoded_length % 8; - if (remainder) - return (encoded_length / 8) * 7 + remainder - 1; - else - return (encoded_length / 8) * 7; -} - -uint16_t sysex_encode(uint8_t *encoded, const uint8_t *source, const uint16_t length){ - uint16_t encoded_full = length / 7; //number of full 8 byte sections from 7 bytes of input - uint16_t i,j; - - //fill out the fully encoded sections - for(i = 0; i < encoded_full; i++) { - uint16_t encoded_msb_idx = i * 8; - uint16_t input_start_idx = i * 7; - encoded[encoded_msb_idx] = 0; - for(j = 0; j < 7; j++){ - uint8_t current = source[input_start_idx + j]; - encoded[encoded_msb_idx] |= (0x80 & current) >> (1 + j); - encoded[encoded_msb_idx + 1 + j] = 0x7F & current; - } - } - - //fill out the rest if there is any more - uint8_t remainder = length % 7; - if (remainder) { - uint16_t encoded_msb_idx = encoded_full * 8; - uint16_t input_start_idx = encoded_full * 7; - encoded[encoded_msb_idx] = 0; - for(j = 0; j < remainder; j++){ - uint8_t current = source[input_start_idx + j]; - encoded[encoded_msb_idx] |= (0x80 & current) >> (1 + j); - encoded[encoded_msb_idx + 1 + j] = 0x7F & current; - } - return encoded_msb_idx + remainder + 1; - } else { - return encoded_full * 8; - } -} - -uint16_t sysex_decode(uint8_t *decoded, const uint8_t *source, const uint16_t length){ - uint16_t decoded_full = length / 8; - uint16_t i,j; - - if (length < 2) - return 0; - - //fill out the fully encoded sections - for(i = 0; i < decoded_full; i++) { - uint16_t encoded_msb_idx = i * 8; - uint16_t output_start_index = i * 7; - for(j = 0; j < 7; j++){ - decoded[output_start_index + j] = 0x7F & source[encoded_msb_idx + j + 1]; - decoded[output_start_index + j] |= (0x80 & (source[encoded_msb_idx] << (1 + j))); - } - } - uint8_t remainder = length % 8; - if (remainder) { - uint16_t encoded_msb_idx = decoded_full * 8; - uint16_t output_start_index = decoded_full * 7; - for(j = 0; j < (remainder - 1); j++) { - decoded[output_start_index + j] = 0x7F & source[encoded_msb_idx + j + 1]; - decoded[output_start_index + j] |= (0x80 & (source[encoded_msb_idx] << (1 + j))); - } - return decoded_full * 7 + remainder - 1; - } else { - return decoded_full * 7; - } -} - |