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https://gitlab.freedesktop.org/pipewire/pipewire.git
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d057c95b2b
Add a type to the events, which can be MIDI1 or UMP. Add debug functions for UMP messages. midifile only supports saving MIDI1 format files for now. It will convert to MIDI1 when asked to write an UMP message. In pw-cat, convert the MIDI1 messages to UMP before sending into the graph.
47 lines
1,023 B
C
47 lines
1,023 B
C
/* PipeWire */
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/* SPDX-FileCopyrightText: Copyright © 2020 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#include <stdio.h>
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#include <spa/utils/defs.h>
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struct midi_file;
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struct midi_event {
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#define MIDI_EVENT_TYPE_MIDI1 0
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#define MIDI_EVENT_TYPE_UMP 1
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uint32_t type;
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uint32_t track;
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double sec;
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uint8_t *data;
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uint32_t size;
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struct {
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uint32_t offset;
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uint32_t size;
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union {
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struct {
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uint32_t uspqn; /* microseconds per quarter note */
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} tempo;
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} parsed;
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} meta;
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};
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struct midi_file_info {
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uint16_t format;
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uint16_t ntracks;
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uint16_t division;
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};
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struct midi_file *
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midi_file_open(const char *filename, const char *mode, struct midi_file_info *info);
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int midi_file_close(struct midi_file *mf);
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int midi_file_next_time(struct midi_file *mf, double *sec);
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int midi_file_read_event(struct midi_file *mf, struct midi_event *event);
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int midi_file_write_event(struct midi_file *mf, const struct midi_event *event);
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int midi_file_dump_event(FILE *out, const struct midi_event *event);
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