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Autoconnect ALSA MIDI inputs.

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This commit is contained in:
Tommaso Cucinotta 2016-05-02 12:20:34 +02:00 committed by derselbst
parent 5235549172
commit 31025133b0
1 changed files with 52 additions and 0 deletions
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52
src/drivers/fluid_alsa.c
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@ -128,6 +128,7 @@ static void fluid_alsa_midi_run(void* d);
typedef struct {
fluid_midi_driver_t driver;
snd_seq_t *seq_handle;
snd_seq_port_info_t *port_info;
struct pollfd *pfd;
int npfd;
fluid_thread_t *thread;
@ -147,9 +148,53 @@ static void fluid_alsa_seq_run(void* d);
*
*/
// Connect ALSA MIDI inputs to dev->port_info
static void autoconnect_inputs(fluid_alsa_seq_driver_t* dev) {
snd_seq_t *seq = dev->seq_handle;
snd_seq_port_subscribe_t *subs;
snd_seq_client_info_t *cinfo;
snd_seq_port_info_t *pinfo;
snd_seq_port_subscribe_alloca(&subs);
snd_seq_client_info_alloca(&cinfo);
snd_seq_port_info_alloca(&pinfo);
snd_seq_client_info_set_client(cinfo, -1);
while (snd_seq_query_next_client(seq, cinfo) >= 0) {
const snd_seq_addr_t *dest = snd_seq_port_info_get_addr(dev->port_info);
snd_seq_port_info_set_client(pinfo, snd_seq_client_info_get_client(cinfo));
snd_seq_port_info_set_port(pinfo, -1);
while (snd_seq_query_next_port(seq, pinfo) >= 0) {
unsigned int needed_type = SND_SEQ_PORT_TYPE_MIDI_GENERIC;
if ((snd_seq_port_info_get_type(pinfo) & needed_type) != needed_type)
continue;
unsigned int needed_cap = SND_SEQ_PORT_CAP_READ|SND_SEQ_PORT_CAP_SUBS_READ;
if ((snd_seq_port_info_get_capability(pinfo) & needed_cap) != needed_cap)
continue;
const snd_seq_addr_t *sender = snd_seq_port_info_get_addr(pinfo);
const char *pname = snd_seq_port_info_get_name(pinfo);
snd_seq_port_subscribe_set_sender(subs, sender);
snd_seq_port_subscribe_set_dest(subs, dest);
if (snd_seq_get_port_subscription(seq, subs) == 0) {
fprintf(stderr, _("Connection %s is already subscribed\n"), pname);
continue;
}
if (snd_seq_subscribe_port(seq, subs) < 0) {
fprintf(stderr, _("Connection of %s failed (%s)\n"), pname, snd_strerror(errno));
continue;
}
fprintf(stderr, _("Connection of %s succeeded\n"), pname);
}
}
}
void fluid_alsa_audio_driver_settings(fluid_settings_t* settings)
{
fluid_settings_register_str(settings, "audio.alsa.device", "default", 0, NULL, NULL);
fluid_settings_register_int(settings, "audio.alsa.autoconnect_inputs", 0, 0, 1, FLUID_HINT_TOGGLED, NULL, NULL);
}
@ -889,6 +934,13 @@ new_fluid_alsa_seq_driver(fluid_settings_t* settings,
}
}
dev->port_info = port_info;
int autoconn_inputs = 0;
fluid_settings_getint(settings, "audio.alsa.autoconnect_inputs", &autoconn_inputs);
if (autoconn_inputs)
autoconnect_inputs(dev);
/* tell the lash server our client id */
#ifdef LASH_ENABLED
{