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pw-cat: add midi recording

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This commit is contained in:
Wim Taymans 2020-02-27 15:37:12 +01:00
parent d31d6b59f1
commit a3582f0e0f
3 changed files with 148 additions and 51 deletions
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43
src/tools/pw-cat.c
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@ -953,7 +953,6 @@ static void show_usage(const char *name, bool is_error)
static int midi_play(struct data *d, void *src, unsigned int n_frames)
{
int res;
struct midi_event ev;
struct spa_pod_builder b;
struct spa_pod_frame f;
uint32_t first_frame, last_frame;
@ -971,19 +970,16 @@ static int midi_play(struct data *d, void *src, unsigned int n_frames)
while (1) {
uint32_t frame;
uint8_t *buf;
struct midi_event ev;
res = midi_file_peek_event(d->midi.file, &ev);
res = midi_file_next_time(d->midi.file, &ev.sec);
if (res <= 0) {
if (have_data)
break;
return res;
}
if (ev.status == 0xff)
goto next;
frame = ev.sec * d->position->clock.rate.denom;
if (frame < first_frame)
frame = 0;
else if (frame < last_frame)
@ -991,14 +987,16 @@ static int midi_play(struct data *d, void *src, unsigned int n_frames)
else
break;
midi_file_read_event(d->midi.file, &ev);
if (ev.status == 0xff)
continue;
spa_pod_builder_control(&b, frame, SPA_CONTROL_Midi);
if ((buf = spa_pod_builder_reserve_bytes(&b, ev.size + 1)) != NULL) {
buf[0] = ev.status;
memcpy(&buf[1], ev.data, ev.size);
}
have_data = true;
next:
midi_file_consume_event(d->midi.file, &ev);
}
spa_pod_builder_pop(&b, &f);
@ -1007,6 +1005,33 @@ next:
static int midi_record(struct data *d, void *src, unsigned int n_frames)
{
struct spa_pod *pod;
struct spa_pod_control *c;
uint32_t frame;
frame = d->clock_time;
d->clock_time += d->position->clock.duration;
if ((pod = spa_pod_from_data(src, n_frames, 0, n_frames)) == NULL)
return 0;
if (!spa_pod_is_sequence(pod))
return 0;
SPA_POD_SEQUENCE_FOREACH((struct spa_pod_sequence*)pod, c) {
struct midi_event ev;
if (c->type != SPA_CONTROL_Midi)
continue;
ev.track = 0;
ev.sec = (frame + c->offset) / (float) d->position->clock.rate.denom;
ev.status = 0;
ev.meta = 0;
ev.data = SPA_POD_BODY(&c->value),
ev.size = SPA_POD_BODY_SIZE(&c->value);
midi_file_write_event(d->midi.file, &ev);
}
return 0;
}
@ -1562,6 +1587,8 @@ error_bad_file:
pw_properties_free(data.props);
if (data.file)
sf_close(data.file);
if (data.midi.file)
midi_file_close(data.midi.file);
return exit_code;
error_usage: