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https://gitee.com/openharmony/third_party_alsa-lib
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66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/**
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* \file include/seq_midi_event.h
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* \brief Application interface library for the ALSA driver
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* \author Jaroslav Kysela <perex@perex.cz>
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* \author Abramo Bagnara <abramo@alsa-project.org>
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* \author Takashi Iwai <tiwai@suse.de>
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* \date 1998-2001
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*
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* Application interface library for the ALSA driver
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*/
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/*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __ALSA_SEQ_MIDI_EVENT_H
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#define __ALSA_SEQ_MIDI_EVENT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \defgroup MIDI_Event Sequencer event <-> MIDI byte stream coder
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* \ingroup Sequencer
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* Sequencer event <-> MIDI byte stream coder
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* \{
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*/
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/** container for sequencer midi event parsers */
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typedef struct snd_midi_event snd_midi_event_t;
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int snd_midi_event_new(size_t bufsize, snd_midi_event_t **rdev);
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int snd_midi_event_resize_buffer(snd_midi_event_t *dev, size_t bufsize);
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void snd_midi_event_free(snd_midi_event_t *dev);
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void snd_midi_event_init(snd_midi_event_t *dev);
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void snd_midi_event_reset_encode(snd_midi_event_t *dev);
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void snd_midi_event_reset_decode(snd_midi_event_t *dev);
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void snd_midi_event_no_status(snd_midi_event_t *dev, int on);
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/* encode from byte stream - return number of written bytes if success */
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long snd_midi_event_encode(snd_midi_event_t *dev, const unsigned char *buf, long count, snd_seq_event_t *ev);
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int snd_midi_event_encode_byte(snd_midi_event_t *dev, int c, snd_seq_event_t *ev);
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/* decode from event to bytes - return number of written bytes if success */
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long snd_midi_event_decode(snd_midi_event_t *dev, unsigned char *buf, long count, const snd_seq_event_t *ev);
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/** \} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ALSA_SEQ_MIDI_EVENT_H */
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