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Diffstat (limited to 'libs/evoral/evoral/midi_util.h')
| -rw-r--r-- | libs/evoral/evoral/midi_util.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libs/evoral/evoral/midi_util.h b/libs/evoral/evoral/midi_util.h new file mode 100644 index 0000000000..735d884e31 --- /dev/null +++ b/libs/evoral/evoral/midi_util.h @@ -0,0 +1,72 @@ +/* This file is part of Evoral. + * Copyright(C) 2008 Dave Robillard <http://drobilla.net> + * Copyright(C) 2000-2008 Paul Davis + * + * Evoral 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 2 of the License, or(at your option) any later + * version. + * + * Evoral 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 details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef EVORAL_MIDI_UTIL_H +#define EVORAL_MIDI_UTIL_H + +#include <evoral/midi_events.h> + +namespace Evoral { + +/** Return the size of the given event NOT including the status byte, + * or -1 if unknown (eg sysex) + */ +static inline int +midi_event_size(unsigned char status) +{ + // if we have a channel event + if (status >= 0x80 && status < 0xF0) { + status &= 0xF0; // mask off the channel + } + + switch (status) { + case MIDI_CMD_NOTE_OFF: + case MIDI_CMD_NOTE_ON: + case MIDI_CMD_NOTE_PRESSURE: + case MIDI_CMD_CONTROL: + case MIDI_CMD_BENDER: + case MIDI_CMD_COMMON_SONG_POS: + return 2; + + case MIDI_CMD_PGM_CHANGE: + case MIDI_CMD_CHANNEL_PRESSURE: + case MIDI_CMD_COMMON_MTC_QUARTER: + case MIDI_CMD_COMMON_SONG_SELECT: + return 1; + + case MIDI_CMD_COMMON_TUNE_REQUEST: + case MIDI_CMD_COMMON_SYSEX_END: + case MIDI_CMD_COMMON_CLOCK: + case MIDI_CMD_COMMON_START: + case MIDI_CMD_COMMON_CONTINUE: + case MIDI_CMD_COMMON_STOP: + case MIDI_CMD_COMMON_SENSING: + case MIDI_CMD_COMMON_RESET: + return 0; + + case MIDI_CMD_COMMON_SYSEX: + return -1; + } + + return -1; +} + +} // namespace Evoral + +#endif // EVORAL_MIDI_UTIL_H + |