static void destroy_pa(struct SoundIoPrivate *si) {
struct SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio;
if (sipa->main_loop)
pa_threaded_mainloop_stop(sipa->main_loop);
pa_context_disconnect(sipa->pulse_context);
pa_context_unref(sipa->pulse_context);
soundio_destroy_devices_info(sipa->current_devices_info);
soundio_destroy_devices_info(sipa->ready_devices_info);
if (sipa->main_loop)
pa_threaded_mainloop_free(sipa->main_loop);
if (sipa->props)
pa_proplist_free(sipa->props);
free(sipa->default_sink_name);
free(sipa->default_source_name);
}
// always called even when refresh_devices succeeds
static void cleanup_refresh_devices(struct SoundIoPrivate *si) {
struct SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio;
soundio_destroy_devices_info(sipa->current_devices_info);
sipa->current_devices_info = NULL;
free(sipa->default_sink_name);
sipa->default_sink_name = NULL;
free(sipa->default_source_name);
sipa->default_source_name = NULL;
}
static void my_flush_events(struct SoundIoPrivate *si, bool wait) {
struct SoundIo *soundio = &si->pub;
struct SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio;
bool change = false;
bool cb_shutdown = false;
struct SoundIoDevicesInfo *old_devices_info = NULL;
pa_threaded_mainloop_lock(sipa->main_loop);
if (wait)
pa_threaded_mainloop_wait(sipa->main_loop);
if (sipa->device_scan_queued && !sipa->connection_err) {
sipa->device_scan_queued = false;
sipa->connection_err = refresh_devices(si);
cleanup_refresh_devices(si);
}
if (sipa->connection_err && !sipa->emitted_shutdown_cb) {
sipa->emitted_shutdown_cb = true;
cb_shutdown = true;
} else if (sipa->ready_devices_info) {
old_devices_info = si->safe_devices_info;
si->safe_devices_info = sipa->ready_devices_info;
sipa->ready_devices_info = NULL;
change = true;
}
pa_threaded_mainloop_unlock(sipa->main_loop);
if (cb_shutdown)
soundio->on_backend_disconnect(soundio, sipa->connection_err);
else if (change)
soundio->on_devices_change(soundio);
soundio_destroy_devices_info(old_devices_info);
}
void soundio_disconnect(struct SoundIo *soundio) {
SoundIoPrivate *si = (SoundIoPrivate *)soundio;
if (!si)
return;
if (si->destroy)
si->destroy(si);
memset(&si->backend_data, 0, sizeof(SoundIoBackendData));
soundio->current_backend = SoundIoBackendNone;
soundio_destroy_devices_info(si->safe_devices_info);
si->safe_devices_info = nullptr;
si->destroy = nullptr;
si->flush_events = nullptr;
si->wait_events = nullptr;
si->wakeup = nullptr;
si->force_device_scan = nullptr;
si->outstream_open = nullptr;
si->outstream_destroy = nullptr;
si->outstream_start = nullptr;
si->outstream_begin_write = nullptr;
si->outstream_end_write = nullptr;
si->outstream_clear_buffer = nullptr;
si->outstream_pause = nullptr;
si->outstream_get_latency = nullptr;
si->instream_open = nullptr;
si->instream_destroy = nullptr;
si->instream_start = nullptr;
si->instream_begin_read = nullptr;
si->instream_end_read = nullptr;
si->instream_pause = nullptr;
si->instream_get_latency = nullptr;
}
static int refresh_devices_bare(SoundIoPrivate *si) {
SoundIo *soundio = &si->pub;
SoundIoJack *sij = &si->backend_data.jack;
if (sij->is_shutdown)
return SoundIoErrorBackendDisconnected;
SoundIoDevicesInfo *devices_info = allocate<SoundIoDevicesInfo>(1);
if (!devices_info)
return SoundIoErrorNoMem;
devices_info->default_output_index = -1;
devices_info->default_input_index = -1;
const char **port_names = jack_get_ports(sij->client, nullptr, nullptr, 0);
if (!port_names) {
soundio_destroy_devices_info(devices_info);
return SoundIoErrorNoMem;
}
SoundIoList<SoundIoJackClient> clients = {0};
const char **port_name_ptr = port_names;
for (; *port_name_ptr; port_name_ptr += 1) {
const char *client_and_port_name = *port_name_ptr;
int client_and_port_name_len = strlen(client_and_port_name);
jack_port_t *jport = jack_port_by_name(sij->client, client_and_port_name);
if (!jport) {
// This refresh devices scan is already outdated. Just give up and
// let refresh_devices be called again.
jack_free(port_names);
soundio_destroy_devices_info(devices_info);
return SoundIoErrorInterrupted;
}
int flags = jack_port_flags(jport);
const char *port_type = jack_port_type(jport);
if (strcmp(port_type, JACK_DEFAULT_AUDIO_TYPE) != 0) {
// we don't know how to support such a port
continue;
}
SoundIoDeviceAim aim = (flags & JackPortIsInput) ?
SoundIoDeviceAimOutput : SoundIoDeviceAimInput;
bool is_physical = flags & JackPortIsPhysical;
const char *client_name = nullptr;
const char *port_name = nullptr;
int client_name_len;
int port_name_len;
split_str(client_and_port_name, client_and_port_name_len, ':',
&client_name, &client_name_len, &port_name, &port_name_len);
if (!client_name || !port_name) {
// device does not have colon, skip it
continue;
}
SoundIoJackClient *client = find_or_create_client(&clients, aim, is_physical,
client_name, client_name_len);
if (!client) {
jack_free(port_names);
soundio_destroy_devices_info(devices_info);
return SoundIoErrorNoMem;
}
if (client->port_count >= SOUNDIO_MAX_CHANNELS) {
// we hit the channel limit, skip the leftovers
continue;
}
SoundIoJackPort *port = &client->ports[client->port_count++];
port->full_name = client_and_port_name;
port->full_name_len = client_and_port_name_len;
port->name = port_name;
port->name_len = port_name_len;
port->channel_id = soundio_parse_channel_id(port_name, port_name_len);
jack_latency_callback_mode_t latency_mode = (aim == SoundIoDeviceAimOutput) ?
JackPlaybackLatency : JackCaptureLatency;
jack_port_get_latency_range(jport, latency_mode, &port->latency_range);
}
for (int i = 0; i < clients.length; i += 1) {
SoundIoJackClient *client = &clients.at(i);
if (client->port_count <= 0)
continue;
SoundIoDevicePrivate *dev = allocate<SoundIoDevicePrivate>(1);
if (!dev) {
jack_free(port_names);
soundio_destroy_devices_info(devices_info);
return SoundIoErrorNoMem;
}
SoundIoDevice *device = &dev->pub;
SoundIoDeviceJack *dj = &dev->backend_data.jack;
int description_len = client->name_len + 3 + 2 * client->port_count;
for (int port_index = 0; port_index < client->port_count; port_index += 1) {
SoundIoJackPort *port = &client->ports[port_index];
description_len += port->name_len;
}
dev->destruct = destruct_device;
device->ref_count = 1;
device->soundio = soundio;
device->is_raw = false;
device->aim = client->aim;
device->id = soundio_str_dupe(client->name, client->name_len);
device->name = allocate<char>(description_len);
device->current_format = SoundIoFormatFloat32NE;
device->sample_rate_count = 1;
device->sample_rates = &dev->prealloc_sample_rate_range;
device->sample_rates[0].min = sij->sample_rate;
device->sample_rates[0].max = sij->sample_rate;
device->sample_rate_current = sij->sample_rate;
device->software_latency_current = sij->period_size / (double) sij->sample_rate;
device->software_latency_min = sij->period_size / (double) sij->sample_rate;
device->software_latency_max = sij->period_size / (double) sij->sample_rate;
dj->port_count = client->port_count;
dj->ports = allocate<SoundIoDeviceJackPort>(dj->port_count);
if (!device->id || !device->name || !dj->ports) {
jack_free(port_names);
soundio_device_unref(device);
soundio_destroy_devices_info(devices_info);
return SoundIoErrorNoMem;
}
for (int port_index = 0; port_index < client->port_count; port_index += 1) {
SoundIoJackPort *port = &client->ports[port_index];
SoundIoDeviceJackPort *djp = &dj->ports[port_index];
djp->full_name = soundio_str_dupe(port->full_name, port->full_name_len);
djp->full_name_len = port->full_name_len;
djp->channel_id = port->channel_id;
djp->latency_range = port->latency_range;
if (!djp->full_name) {
jack_free(port_names);
soundio_device_unref(device);
soundio_destroy_devices_info(devices_info);
return SoundIoErrorNoMem;
}
}
memcpy(device->name, client->name, client->name_len);
memcpy(&device->name[client->name_len], ": ", 2);
int index = client->name_len + 2;
for (int port_index = 0; port_index < client->port_count; port_index += 1) {
SoundIoJackPort *port = &client->ports[port_index];
memcpy(&device->name[index], port->name, port->name_len);
index += port->name_len;
if (port_index + 1 < client->port_count) {
memcpy(&device->name[index], ", ", 2);
index += 2;
}
}
device->current_layout.channel_count = client->port_count;
bool any_invalid = false;
for (int port_index = 0; port_index < client->port_count; port_index += 1) {
SoundIoJackPort *port = &client->ports[port_index];
device->current_layout.channels[port_index] = port->channel_id;
any_invalid = any_invalid || (port->channel_id == SoundIoChannelIdInvalid);
}
if (any_invalid) {
const struct SoundIoChannelLayout *layout = soundio_channel_layout_get_default(client->port_count);
if (layout)
device->current_layout = *layout;
} else {
soundio_channel_layout_detect_builtin(&device->current_layout);
}
device->layout_count = 1;
device->layouts = &device->current_layout;
device->format_count = 1;
device->formats = &dev->prealloc_format;
device->formats[0] = device->current_format;
SoundIoList<SoundIoDevice *> *device_list;
if (device->aim == SoundIoDeviceAimOutput) {
device_list = &devices_info->output_devices;
if (devices_info->default_output_index < 0 && client->is_physical)
devices_info->default_output_index = device_list->length;
} else {
assert(device->aim == SoundIoDeviceAimInput);
device_list = &devices_info->input_devices;
if (devices_info->default_input_index < 0 && client->is_physical)
devices_info->default_input_index = device_list->length;
}
if (device_list->append(device)) {
soundio_device_unref(device);
soundio_destroy_devices_info(devices_info);
return SoundIoErrorNoMem;
}
}
jack_free(port_names);
soundio_destroy_devices_info(si->safe_devices_info);
si->safe_devices_info = devices_info;
return 0;
}
// call this while holding the main loop lock
static int refresh_devices(struct SoundIoPrivate *si) {
struct SoundIo *soundio = &si->pub;
struct SoundIoPulseAudio *sipa = &si->backend_data.pulseaudio;
assert(!sipa->current_devices_info);
sipa->current_devices_info = ALLOCATE(struct SoundIoDevicesInfo, 1);
if (!sipa->current_devices_info)
return SoundIoErrorNoMem;
pa_operation *list_sink_op = pa_context_get_sink_info_list(sipa->pulse_context, sink_info_callback, si);
pa_operation *list_source_op = pa_context_get_source_info_list(sipa->pulse_context, source_info_callback, si);
pa_operation *server_info_op = pa_context_get_server_info(sipa->pulse_context, server_info_callback, si);
int err;
if ((err = perform_operation(si, list_sink_op))) {
return err;
}
if ((err = perform_operation(si, list_source_op))) {
return err;
}
if ((err = perform_operation(si, server_info_op))) {
return err;
}
if (sipa->device_query_err) {
return sipa->device_query_err;
}
// based on the default sink name, figure out the default output index
// if the name doesn't match just pick the first one. if there are no
// devices then we need to set it to -1.
sipa->current_devices_info->default_output_index = -1;
sipa->current_devices_info->default_input_index = -1;
if (sipa->current_devices_info->input_devices.length > 0) {
sipa->current_devices_info->default_input_index = 0;
for (int i = 0; i < sipa->current_devices_info->input_devices.length; i += 1) {
struct SoundIoDevice *device = SoundIoListDevicePtr_val_at(
&sipa->current_devices_info->input_devices, i);
assert(device->aim == SoundIoDeviceAimInput);
if (strcmp(device->id, sipa->default_source_name) == 0) {
sipa->current_devices_info->default_input_index = i;
}
}
}
if (sipa->current_devices_info->output_devices.length > 0) {
sipa->current_devices_info->default_output_index = 0;
for (int i = 0; i < sipa->current_devices_info->output_devices.length; i += 1) {
struct SoundIoDevice *device = SoundIoListDevicePtr_val_at(
&sipa->current_devices_info->output_devices, i);
assert(device->aim == SoundIoDeviceAimOutput);
if (strcmp(device->id, sipa->default_sink_name) == 0) {
sipa->current_devices_info->default_output_index = i;
}
}
}
soundio_destroy_devices_info(sipa->ready_devices_info);
sipa->ready_devices_info = sipa->current_devices_info;
sipa->current_devices_info = NULL;
pa_threaded_mainloop_signal(sipa->main_loop, 0);
soundio->on_events_signal(soundio);
return 0;
}