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jack: implement midi mixing

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This commit is contained in:
Wim Taymans 2019-09-26 11:56:25 +02:00
parent 8d8ef587f5
commit 274d616fa6
1 changed files with 46 additions and 14 deletions
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60
src/pipewire-jack.c
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@ -48,7 +48,7 @@
#define JACK_PORT_NAME_SIZE 256
#define JACK_PORT_MAX 4096
#define JACK_PORT_TYPE_SIZE 32
#define CONNECTION_NUM_FOR_PORT 2048
#define CONNECTION_NUM_FOR_PORT 1024
#define BUFFER_SIZE_MAX 8192
@ -654,22 +654,45 @@ static void convert_from_midi(void *midi, void *buffer, size_t size)
spa_pod_builder_pop(&b, &f);
}
static void convert_to_midi(struct spa_pod_sequence *seq, void *midi)
static void convert_to_midi(struct spa_pod_sequence **seq, uint32_t n_seq, void *midi)
{
struct spa_pod_control *c;
struct spa_pod_control *c[n_seq];
uint32_t i;
SPA_POD_SEQUENCE_FOREACH(seq, c) {
switch(c->type) {
for (i = 0; i < n_seq; i++) {
c[i] = spa_pod_control_first(&seq[i]->body);
}
while (true) {
struct spa_pod_control *next = NULL;
uint32_t next_index = 0;
for (i = 0; i < n_seq; i++) {
if (!spa_pod_control_is_inside(&seq[i]->body,
SPA_POD_BODY_SIZE(seq[i]), c[i]))
continue;
if (next == NULL || c[i]->offset < next->offset) {
next = c[i];
next_index = i;
}
}
if (next == NULL)
break;
switch(next->type) {
case SPA_CONTROL_Midi:
jack_midi_event_write(midi,
c->offset,
SPA_POD_BODY(&c->value),
SPA_POD_BODY_SIZE(&c->value));
next->offset,
SPA_POD_BODY(&next->value),
SPA_POD_BODY_SIZE(&next->value));
break;
}
c[next_index] = spa_pod_control_next(c[next_index]);
}
}
static void *get_buffer_output(struct client *c, struct port *p, uint32_t frames, uint32_t stride)
{
struct mix *mix;
@ -2749,13 +2772,17 @@ static void *mix_audio(struct client *c, struct port *p, jack_nframes_t frames)
static void *mix_midi(struct client *c, struct port *p, jack_nframes_t frames)
{
struct mix *mix;
struct buffer *b;
struct spa_io_buffers *io;
void *ptr = p->emptyptr;
struct spa_pod_sequence *seq[CONNECTION_NUM_FOR_PORT];
uint32_t n_seq = 0;
jack_midi_reset_buffer(ptr);
spa_list_for_each(mix, &p->mix, port_link) {
struct spa_data *d;
void *pod;
pw_log_trace(NAME" %p: port %p mix %d.%d get buffer %d",
c, p, p->id, mix->id, frames);
@ -2764,12 +2791,17 @@ static void *mix_midi(struct client *c, struct port *p, jack_nframes_t frames)
continue;
io->status = SPA_STATUS_NEED_DATA;
b = &mix->buffers[io->buffer_id];
/* FIXME, actually mix the midi */
convert_to_midi(b->datas[0].data, ptr);
p->zeroed = false;
break;
d = &mix->buffers[io->buffer_id].datas[0];
if ((pod = spa_pod_from_data(d->data, d->maxsize, d->chunk->offset, d->chunk->size)) == NULL)
continue;
if (!spa_pod_is_sequence(pod))
continue;
seq[n_seq++] = pod;
}
convert_to_midi(seq, n_seq, ptr);
return ptr;
}