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pw-cat: rework midifile a little

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Move the code to read and write midi into the midifile helper
and simplify things a bit.
This commit is contained in:
Wim Taymans 2020-02-27 12:41:14 +01:00
parent edbf1ff500
commit b7dbf4bbc1
3 changed files with 250 additions and 115 deletions
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45
src/tools/midifile.h
View file

@ -25,55 +25,30 @@
#include <stdio.h>
#include <spa/utils/defs.h>
#include <spa/utils/list.h>
struct midi_file;
struct midi_event {
struct spa_list link;
struct midi_track *track;
uint32_t track;
double sec;
uint8_t status;
uint8_t meta;
uint8_t *data;
uint32_t size;
};
struct midi_track {
struct spa_list link;
uint8_t *data;
uint32_t size;
uint8_t *p;
int64_t tick;
uint8_t running_status;
unsigned int eof:1;
};
struct midi_file {
uint8_t *data;
size_t size;
uint32_t length;
struct midi_file_info {
uint16_t format;
uint16_t ntracks;
uint16_t division;
uint32_t tempo;
struct spa_list tracks;
uint8_t *p;
int64_t tick;
double tick_sec;
double tick_start;
};
int midi_file_init(struct midi_file *mf, const char *mode,
void *data, size_t size);
struct midi_file *
midi_file_open(const char *filename, const char *mode, struct midi_file_info *info);
int midi_file_add_track(struct midi_file *mf, struct midi_track *track);
int midi_file_close(struct midi_file *mf);
int midi_file_peek_event(struct midi_file *mf, struct midi_event *event);
int midi_file_consume_event(struct midi_file *mf, struct midi_event *event);
int midi_file_consume_event(struct midi_file *mf, const struct midi_event *event);
int midi_file_add_event(struct midi_file *mf, const struct midi_event *event);