static
int alsa_rawmidi_start(alsa_midi_t *m)
{
alsa_rawmidi_t *midi = (alsa_rawmidi_t*)m;
int err;
char c = 'q';
if (midi->keep_walking == 1)
return -EALREADY;
midi->keep_walking = 1;
if ((err = jack_client_create_thread(midi->client, &midi->in.thread, MIDI_THREAD_PRIO, jack_is_realtime(midi->client), midi_thread, &midi->in))) {
midi->keep_walking = 0;
return err;
}
if ((err = jack_client_create_thread(midi->client, &midi->out.thread, MIDI_THREAD_PRIO, jack_is_realtime(midi->client), midi_thread, &midi->out))) {
midi->keep_walking = 0;
write(midi->in.wake_pipe[1], &c, 1);
pthread_join(midi->in.thread, NULL);
return err;
}
if ((err = jack_client_create_thread(midi->client, &midi->scan.thread, 0, 0, scan_thread, midi))) {
midi->keep_walking = 0;
write(midi->in.wake_pipe[1], &c, 1);
write(midi->out.wake_pipe[1], &c, 1);
pthread_join(midi->in.thread, NULL);
pthread_join(midi->out.thread, NULL);
return err;
}
return 0;
}
static int oss_driver_start (oss_driver_t *driver)
{
int flags = 0;
int format;
int channels;
int samplerate;
int infd = driver->infd;
int outfd = driver->outfd;
unsigned int period_size;
size_t samplesize;
size_t fragsize;
const char *indev = driver->indev;
const char *outdev = driver->outdev;
switch (driver->bits)
{
case 24:
case 32:
samplesize = sizeof(int);
break;
case 64:
samplesize = sizeof(double);
break;
case 16:
default:
samplesize = sizeof(short);
break;
}
driver->trigger = 0;
if (strcmp(indev, outdev) != 0)
{
if (driver->capture_channels > 0)
{
infd = open(indev, O_RDONLY|O_EXCL);
if (infd < 0)
{
jack_error(
"OSS: failed to open input device %s: %s@%i, errno=%d",
indev, __FILE__, __LINE__, errno);
}
#ifndef OSS_NO_COOKED_MODE
ioctl(infd, SNDCTL_DSP_COOKEDMODE, &flags);
#endif
fragsize = driver->period_size *
driver->capture_channels * samplesize;
set_fragment(infd, fragsize, driver->nperiods);
}
else infd = -1;
if (driver->playback_channels > 0)
{
outfd = open(outdev, O_WRONLY|O_EXCL);
if (outfd < 0)
{
jack_error(
"OSS: failed to open output device %s: %s@%i, errno=%d",
outdev, __FILE__, __LINE__, errno);
}
#ifndef OSS_NO_COOKED_MODE
ioctl(outfd, SNDCTL_DSP_COOKEDMODE, &flags);
#endif
fragsize = driver->period_size *
driver->playback_channels * samplesize;
set_fragment(outfd, fragsize, driver->nperiods);
}
else outfd = -1;
}
else
{
if (driver->capture_channels != 0 &&
driver->playback_channels == 0)
{
infd = open(indev, O_RDWR|O_EXCL);
outfd = -1;
if (infd < 0)
{
jack_error(
"OSS: failed to open device %s: %s@%i, errno=%d",
indev, __FILE__, __LINE__, errno);
return -1;
}
#ifndef OSS_NO_COOKED_MODE
ioctl(infd, SNDCTL_DSP_COOKEDMODE, &flags);
#endif
}
else if (driver->capture_channels == 0 &&
driver->playback_channels != 0)
{
infd = -1;
outfd = open(outdev, O_RDWR|O_EXCL);
if (outfd < 0)
{
jack_error(
"OSS: failed to open device %s: %s@%i, errno=%d",
outdev, __FILE__, __LINE__, errno);
return -1;
}
#ifndef OSS_NO_COOKED_MODE
ioctl(outfd, SNDCTL_DSP_COOKEDMODE, &flags);
#endif
}
else
{
infd = outfd = open(indev, O_RDWR|O_EXCL);
if (infd < 0)
{
jack_error(
"OSS: failed to open device %s: %s@%i, errno=%d",
indev, __FILE__, __LINE__, errno);
return -1;
}
#ifndef OSS_NO_COOKED_MODE
ioctl(infd, SNDCTL_DSP_COOKEDMODE, &flags);
#endif
}
if (infd >= 0 && outfd >= 0)
{
ioctl(outfd, SNDCTL_DSP_SETTRIGGER, &driver->trigger);
driver->trigger = (PCM_ENABLE_INPUT|PCM_ENABLE_OUTPUT);
if (ioctl(infd, SNDCTL_DSP_SETDUPLEX, 0) < 0)
{
if (errno != EINVAL) /* Dont care */
jack_error(
"OSS: failed to enable full duplex for %s: %s@%i, errno=%d",
indev, __FILE__, __LINE__,
errno);
}
}
if (infd >= 0)
{
fragsize = driver->period_size *
driver->capture_channels * samplesize;
set_fragment(infd, fragsize, driver->nperiods);
}
if (outfd >= 0 && infd < 0)
{
fragsize = driver->period_size *
driver->playback_channels * samplesize;
set_fragment(outfd, fragsize, driver->nperiods);
}
}
driver->infd = infd;
driver->outfd = outfd;
if (infd >= 0)
{
format = driver->format;
if (ioctl(infd, SNDCTL_DSP_SETFMT, &format) < 0)
jack_error(
"OSS: failed to set format for %s: %s@%i, errno=%d",
indev, __FILE__, __LINE__, errno);
channels = driver->capture_channels;
if (ioctl(infd, SNDCTL_DSP_CHANNELS, &channels) < 0)
jack_error(
"OSS: failed to set channels for %s: %s@%i, errno=%d",
indev, __FILE__, __LINE__, errno);
samplerate = driver->sample_rate;
if (ioctl(infd, SNDCTL_DSP_SPEED, &samplerate) < 0)
jack_error(
"OSS: failed to set samplerate for %s: %s@%i, errno=%d",
indev, __FILE__, __LINE__, errno);
jack_info("oss_driver: %s : 0x%x/%i/%i (%i)", indev,
format, channels, samplerate, get_fragment(infd));
period_size = get_fragment(infd) / samplesize / channels;
if (period_size != driver->period_size &&
!driver->ignorehwbuf)
{
jack_info("oss_driver: period size update: %u",
period_size);
driver->period_size = period_size;
driver->period_usecs =
((double) driver->period_size /
(double) driver->sample_rate) * 1e6;
if (driver->engine->set_buffer_size(driver->engine,
driver->period_size)) {
jack_error ("OSS: cannot set engine buffer size to %d (check MIDI)", driver->period_size);
return -1;
}
}
}
if (outfd >= 0 && infd != outfd)
{
format = driver->format;
if (ioctl(outfd, SNDCTL_DSP_SETFMT, &format) < 0)
jack_error(
"OSS: failed to set format for %s: %s@%i, errno=%d",
outdev, __FILE__, __LINE__, errno);
channels = driver->playback_channels;
if (ioctl(outfd, SNDCTL_DSP_CHANNELS, &channels) < 0)
jack_error(
"OSS: failed to set channels for %s: %s@%i, errno=%d",
outdev, __FILE__, __LINE__, errno);
samplerate = driver->sample_rate;
if (ioctl(outfd, SNDCTL_DSP_SPEED, &samplerate) < 0)
jack_error(
"OSS: failed to set samplerate for %s: %s@%i, errno=%d",
outdev, __FILE__, __LINE__, errno);
jack_info("oss_driver: %s : 0x%x/%i/%i (%i)", outdev,
format, channels, samplerate,
get_fragment(outfd));
period_size = get_fragment(outfd) / samplesize / channels;
if (period_size != driver->period_size &&
!driver->ignorehwbuf)
{
jack_info("oss_driver: period size update: %u",
period_size);
driver->period_size = period_size;
driver->period_usecs =
((double) driver->period_size /
(double) driver->sample_rate) * 1e6;
if (driver->engine->set_buffer_size(driver->engine,
driver->period_size)) {
jack_error ("OSS: cannot set engine buffer size to %d (check MIDI)", driver->period_size);
return -1;
}
}
}
if (driver->capture_channels > 0)
{
driver->indevbufsize = driver->period_size *
driver->capture_channels * samplesize;
driver->indevbuf = malloc(driver->indevbufsize);
if (driver->indevbuf == NULL)
{
jack_error( "OSS: malloc() failed: %s@%i",
__FILE__, __LINE__);
return -1;
}
memset(driver->indevbuf, 0x00, driver->indevbufsize);
}
else
{
driver->indevbufsize = 0;
driver->indevbuf = NULL;
}
if (driver->playback_channels > 0)
{
driver->outdevbufsize = driver->period_size *
driver->playback_channels * samplesize;
driver->outdevbuf = malloc(driver->outdevbufsize);
if (driver->outdevbuf == NULL)
{
jack_error("OSS: malloc() failed: %s@%i",
__FILE__, __LINE__);
return -1;
}
memset(driver->outdevbuf, 0x00, driver->outdevbufsize);
}
else
{
driver->outdevbufsize = 0;
driver->outdevbuf = NULL;
}
jack_info("oss_driver: indevbuf %zd B, outdevbuf %zd B",
driver->indevbufsize, driver->outdevbufsize);
pthread_mutex_init(&driver->mutex_in, NULL);
pthread_mutex_init(&driver->mutex_out, NULL);
# ifdef USE_BARRIER
puts("oss_driver: using barrier mode, (dual thread)");
pthread_barrier_init(&driver->barrier, NULL, 2);
# else
puts("oss_driver: not using barrier mode, (single thread)");
# endif
sem_init(&driver->sem_start, 0, 0);
driver->run = 1;
driver->threads = 0;
if (infd >= 0)
{
if (jack_client_create_thread(NULL, &driver->thread_in,
driver->engine->rtpriority,
driver->engine->control->real_time,
io_thread, driver) < 0)
{
jack_error("OSS: jack_client_create_thread() failed: %s@%i",
__FILE__, __LINE__);
return -1;
}
driver->threads |= 1;
}
# ifdef USE_BARRIER
if (outfd >= 0)
{
if (jack_client_create_thread(NULL, &driver->thread_out,
driver->engine->rtpriority,
driver->engine->control->real_time,
io_thread, driver) < 0)
{
jack_error("OSS: jack_client_create_thread() failed: %s@%i",
__FILE__, __LINE__);
return -1;
}
driver->threads |= 2;
}
# endif
if (driver->threads & 1) sem_post(&driver->sem_start);
if (driver->threads & 2) sem_post(&driver->sem_start);
driver->last_periodtime = driver->engine->get_microseconds();
driver->next_periodtime = 0;
driver->iodelay = 0.0F;
return 0;
}
