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This patch enables the automatic conversion of UMP events from/to the legacy ALSA sequencer MIDI events. Also, as UMP itself has two different modes (MIDI 1.0 and MIDI 2.0), yet another converters between them are needed, too. Namely, we have conversions between the legacy and UMP like: - seq legacy event -> seq UMP MIDI 1.0 event - seq legacy event -> seq UMP MIDI 2.0 event - seq UMP MIDI 1.0 event -> seq legacy event - seq UMP MIDI 2.0 event -> seq legacy event and the conversions between UMP MIDI 1.0 and 2.0 clients like: - seq UMP MIDI 1.0 event -> seq UMP MIDI 2.0 event - seq UMP MIDI 2.0 event -> seq UMP MIDI 1.0 event The translation is per best-effort; some MIDI 2.0 specific events are ignored when translated to MIDI 1.0. Reviewed-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20230523075358.9672-31-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
22 lines
672 B
C
22 lines
672 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* ALSA sequencer event conversion between UMP and legacy clients
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*/
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#ifndef __SEQ_UMP_CONVERT_H
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#define __SEQ_UMP_CONVERT_H
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#include "seq_clientmgr.h"
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#include "seq_ports.h"
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int snd_seq_deliver_from_ump(struct snd_seq_client *source,
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struct snd_seq_client *dest,
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struct snd_seq_client_port *dest_port,
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struct snd_seq_event *event,
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int atomic, int hop);
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int snd_seq_deliver_to_ump(struct snd_seq_client *source,
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struct snd_seq_client *dest,
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struct snd_seq_client_port *dest_port,
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struct snd_seq_event *event,
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int atomic, int hop);
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#endif /* __SEQ_UMP_CONVERT_H */
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