void AudioDriverPulseAudio::detect_channels(bool capture) {
pa_channel_map_init_stereo(capture ? &pa_rec_map : &pa_map);
String device = capture ? capture_device_name : device_name;
if (device == "Default") {
// Get the default output device name
pa_status = 0;
pa_operation *pa_op = pa_context_get_server_info(pa_ctx, &AudioDriverPulseAudio::pa_server_info_cb, (void *)this);
if (pa_op) {
while (pa_status == 0) {
int ret = pa_mainloop_iterate(pa_ml, 1, NULL);
if (ret < 0) {
ERR_PRINT("pa_mainloop_iterate error");
}
}
pa_operation_unref(pa_op);
} else {
ERR_PRINT("pa_context_get_server_info error");
}
}
char dev[1024];
if (device == "Default") {
strcpy(dev, capture ? capture_default_device.utf8().get_data() : default_device.utf8().get_data());
} else {
strcpy(dev, device.utf8().get_data());
}
// Now using the device name get the amount of channels
pa_status = 0;
pa_operation *pa_op;
if (capture) {
pa_op = pa_context_get_source_info_by_name(pa_ctx, dev, &AudioDriverPulseAudio::pa_source_info_cb, (void *)this);
} else {
pa_op = pa_context_get_sink_info_by_name(pa_ctx, dev, &AudioDriverPulseAudio::pa_sink_info_cb, (void *)this);
}
if (pa_op) {
while (pa_status == 0) {
int ret = pa_mainloop_iterate(pa_ml, 1, NULL);
if (ret < 0) {
ERR_PRINT("pa_mainloop_iterate error");
}
}
pa_operation_unref(pa_op);
} else {
if (capture) {
ERR_PRINT("pa_context_get_source_info_by_name error");
} else {
ERR_PRINT("pa_context_get_sink_info_by_name error");
}
}
}
static void toggle_mic_mute(pa_context *c)
{
pa_operation *o;
o = pa_context_get_source_info_by_name(c, "@DEFAULT_SOURCE@",
source_toggle_mute_callback,
NULL);
if (!o) {
fprintf(stderr, "Operation failed: %s\n",
pa_strerror(pa_context_errno(c)));
return;
}
pa_operation_unref(o);
}
static gchar *
gst_pulsesrc_device_description (GstPulseSrc * pulsesrc)
{
pa_operation *o = NULL;
gchar *t;
if (!pulsesrc->mainloop)
goto no_mainloop;
pa_threaded_mainloop_lock (pulsesrc->mainloop);
if (!(o = pa_context_get_source_info_by_name (pulsesrc->context,
pulsesrc->device, gst_pulsesrc_source_info_cb, pulsesrc))) {
GST_ELEMENT_ERROR (pulsesrc, RESOURCE, FAILED,
("pa_stream_get_source_info() failed: %s",
pa_strerror (pa_context_errno (pulsesrc->context))), (NULL));
goto unlock;
}
while (pa_operation_get_state (o) == PA_OPERATION_RUNNING) {
if (gst_pulsesrc_is_dead (pulsesrc, FALSE))
goto unlock;
pa_threaded_mainloop_wait (pulsesrc->mainloop);
}
unlock:
if (o)
pa_operation_unref (o);
t = g_strdup (pulsesrc->device_description);
pa_threaded_mainloop_unlock (pulsesrc->mainloop);
return t;
no_mainloop:
{
GST_DEBUG_OBJECT (pulsesrc, "have no mainloop");
return NULL;
}
}
int_fast32_t pulse_get_source_info(pa_source_info_cb_t cb, const char *name,
void *userdata)
{
if (pulse_context_ready() < 0)
return -1;
pulse_lock();
pa_operation *op = pa_context_get_source_info_by_name(
pulse_context, name, cb, userdata);
while (pa_operation_get_state(op) == PA_OPERATION_RUNNING)
pulse_wait();
pa_operation_unref(op);
pulse_unlock();
return 0;
}
static int pulse_update_volume(snd_ctl_pulse_t * ctl)
{
int err;
pa_operation *o;
assert(ctl);
if (!ctl->p)
return -EBADFD;
err = pulse_check_connection(ctl->p);
if (err < 0)
return err;
o = pa_context_get_sink_info_by_name(ctl->p->context, ctl->sink,
sink_info_cb, ctl);
if (o) {
err = pulse_wait_operation(ctl->p, o);
pa_operation_unref(o);
} else
err = -EIO;
if (err < 0)
return err;
o = pa_context_get_source_info_by_name(ctl->p->context,
ctl->source, source_info_cb,
ctl);
if (o) {
err = pulse_wait_operation(ctl->p, o);
pa_operation_unref(o);
} else
err = -EIO;
if (err < 0)
return err;
return 0;
}
static void event_cb(pa_context * c, pa_subscription_event_type_t t,
uint32_t index, void *userdata)
{
snd_ctl_pulse_t *ctl = (snd_ctl_pulse_t *) userdata;
pa_operation *o;
assert(ctl);
if (!ctl->p || !ctl->p->mainloop || !ctl->p->context)
return;
o = pa_context_get_sink_info_by_name(ctl->p->context, ctl->sink,
sink_info_cb, ctl);
if (o)
pa_operation_unref(o);
o = pa_context_get_source_info_by_name(ctl->p->context,
ctl->source, source_info_cb,
ctl);
if (o)
pa_operation_unref(o);
}
static void probe_devices(ALboolean capture)
{
pa_threaded_mainloop *loop;
if(capture == AL_FALSE)
allDevNameMap = malloc(sizeof(DevMap) * 1);
else
allCaptureDevNameMap = malloc(sizeof(DevMap) * 1);
if((loop=pa_threaded_mainloop_new()) &&
pa_threaded_mainloop_start(loop) >= 0)
{
pa_context *context;
pa_threaded_mainloop_lock(loop);
context = connect_context(loop, AL_FALSE);
if(context)
{
pa_operation *o;
if(capture == AL_FALSE)
{
pa_stream_flags_t flags;
pa_sample_spec spec;
pa_stream *stream;
flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
spec.format = PA_SAMPLE_S16NE;
spec.rate = 44100;
spec.channels = 2;
stream = connect_playback_stream(NULL, loop, context, flags,
NULL, &spec, NULL);
if(stream)
{
o = pa_context_get_sink_info_by_name(context, pa_stream_get_device_name(stream), sink_device_callback, loop);
WAIT_FOR_OPERATION(o, loop);
pa_stream_disconnect(stream);
pa_stream_unref(stream);
stream = NULL;
}
o = pa_context_get_sink_info_list(context, sink_device_callback, loop);
}
else
{
pa_stream_flags_t flags;
pa_sample_spec spec;
pa_stream *stream;
flags = PA_STREAM_FIX_FORMAT | PA_STREAM_FIX_RATE |
PA_STREAM_FIX_CHANNELS | PA_STREAM_DONT_MOVE;
spec.format = PA_SAMPLE_S16NE;
spec.rate = 44100;
spec.channels = 1;
stream = connect_record_stream(NULL, loop, context, flags,
NULL, &spec, NULL);
if(stream)
{
o = pa_context_get_source_info_by_name(context, pa_stream_get_device_name(stream), source_device_callback, loop);
WAIT_FOR_OPERATION(o, loop);
pa_stream_disconnect(stream);
pa_stream_unref(stream);
stream = NULL;
}
o = pa_context_get_source_info_list(context, source_device_callback, loop);
}
WAIT_FOR_OPERATION(o, loop);
pa_context_disconnect(context);
pa_context_unref(context);
}
pa_threaded_mainloop_unlock(loop);
pa_threaded_mainloop_stop(loop);
}
if(loop)
pa_threaded_mainloop_free(loop);
}
static ALCenum pulse_open_capture(ALCdevice *device, const ALCchar *device_name)
{
const char *pulse_name = NULL;
pa_stream_flags_t flags = 0;
pa_channel_map chanmap;
pulse_data *data;
pa_operation *o;
ALuint samples;
if(device_name)
{
ALuint i;
if(!allCaptureDevNameMap)
probe_devices(AL_TRUE);
for(i = 0;i < numCaptureDevNames;i++)
{
if(strcmp(device_name, allCaptureDevNameMap[i].name) == 0)
{
pulse_name = allCaptureDevNameMap[i].device_name;
break;
}
}
if(i == numCaptureDevNames)
return ALC_INVALID_VALUE;
}
if(pulse_open(device) == ALC_FALSE)
return ALC_INVALID_VALUE;
data = device->ExtraData;
pa_threaded_mainloop_lock(data->loop);
data->spec.rate = device->Frequency;
data->spec.channels = ChannelsFromDevFmt(device->FmtChans);
switch(device->FmtType)
{
case DevFmtUByte:
data->spec.format = PA_SAMPLE_U8;
break;
case DevFmtShort:
data->spec.format = PA_SAMPLE_S16NE;
break;
case DevFmtInt:
data->spec.format = PA_SAMPLE_S32NE;
break;
case DevFmtFloat:
data->spec.format = PA_SAMPLE_FLOAT32NE;
break;
case DevFmtByte:
case DevFmtUShort:
case DevFmtUInt:
ERR("%s capture samples not supported\n", DevFmtTypeString(device->FmtType));
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
if(pa_sample_spec_valid(&data->spec) == 0)
{
ERR("Invalid sample format\n");
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
if(!pa_channel_map_init_auto(&chanmap, data->spec.channels, PA_CHANNEL_MAP_WAVEEX))
{
ERR("Couldn't build map for channel count (%d)!\n", data->spec.channels);
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
samples = device->UpdateSize * device->NumUpdates;
samples = maxu(samples, 100 * device->Frequency / 1000);
data->attr.minreq = -1;
data->attr.prebuf = -1;
data->attr.maxlength = samples * pa_frame_size(&data->spec);
data->attr.tlength = -1;
data->attr.fragsize = minu(samples, 50*device->Frequency/1000) *
pa_frame_size(&data->spec);
flags |= PA_STREAM_DONT_MOVE;
flags |= PA_STREAM_START_CORKED|PA_STREAM_ADJUST_LATENCY;
data->stream = connect_record_stream(pulse_name, data->loop, data->context,
flags, &data->attr, &data->spec,
&chanmap);
if(!data->stream)
{
pa_threaded_mainloop_unlock(data->loop);
goto fail;
}
pa_stream_set_state_callback(data->stream, stream_state_callback2, device);
data->device_name = strdup(pa_stream_get_device_name(data->stream));
o = pa_context_get_source_info_by_name(data->context, data->device_name,
source_name_callback, device);
WAIT_FOR_OPERATION(o, data->loop);
pa_threaded_mainloop_unlock(data->loop);
return ALC_NO_ERROR;
fail:
pulse_close(device);
return ALC_INVALID_VALUE;
}
static gboolean
gst_pulsemixer_ctrl_open (GstPulseMixerCtrl * c)
{
int e;
gchar *name = gst_pulse_client_name ();
pa_operation *o = NULL;
g_assert (c);
c->mainloop = pa_threaded_mainloop_new ();
g_assert (c->mainloop);
e = pa_threaded_mainloop_start (c->mainloop);
g_assert (e == 0);
pa_threaded_mainloop_lock (c->mainloop);
if (!(c->context =
pa_context_new (pa_threaded_mainloop_get_api (c->mainloop), name))) {
GST_WARNING_OBJECT (c->object, "Failed to create context");
goto unlock_and_fail;
}
pa_context_set_state_callback (c->context,
gst_pulsemixer_ctrl_context_state_cb, c);
pa_context_set_subscribe_callback (c->context,
gst_pulsemixer_ctrl_subscribe_cb, c);
if (pa_context_connect (c->context, c->server, 0, NULL) < 0) {
GST_WARNING_OBJECT (c->object, "Failed to connect context: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
/* Wait until the context is ready */
pa_threaded_mainloop_wait (c->mainloop);
if (pa_context_get_state (c->context) != PA_CONTEXT_READY) {
GST_WARNING_OBJECT (c->object, "Failed to connect context: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
/* Subscribe to events */
if (!(o =
pa_context_subscribe (c->context,
PA_SUBSCRIPTION_MASK_SINK | PA_SUBSCRIPTION_MASK_SOURCE,
gst_pulsemixer_ctrl_success_cb, c))) {
GST_WARNING_OBJECT (c->object, "Failed to subscribe to events: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
c->operation_success = 0;
while (pa_operation_get_state (o) != PA_OPERATION_DONE) {
pa_threaded_mainloop_wait (c->mainloop);
CHECK_DEAD_GOTO (c, unlock_and_fail);
}
if (!c->operation_success) {
GST_WARNING_OBJECT (c->object, "Failed to subscribe to events: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
pa_operation_unref (o);
o = NULL;
/* Get sink info */
if (c->type == GST_PULSEMIXER_UNKNOWN || c->type == GST_PULSEMIXER_SINK) {
if (!(o =
pa_context_get_sink_info_by_name (c->context, c->device,
gst_pulsemixer_ctrl_sink_info_cb, c))) {
GST_WARNING_OBJECT (c->object, "Failed to get sink info: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
c->operation_success = 0;
while (pa_operation_get_state (o) != PA_OPERATION_DONE) {
pa_threaded_mainloop_wait (c->mainloop);
CHECK_DEAD_GOTO (c, unlock_and_fail);
}
pa_operation_unref (o);
o = NULL;
if (!c->operation_success && (c->type == GST_PULSEMIXER_SINK
|| pa_context_errno (c->context) != PA_ERR_NOENTITY)) {
GST_WARNING_OBJECT (c->object, "Failed to get sink info: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
}
if (c->type == GST_PULSEMIXER_UNKNOWN || c->type == GST_PULSEMIXER_SOURCE) {
if (!(o =
pa_context_get_source_info_by_name (c->context, c->device,
gst_pulsemixer_ctrl_source_info_cb, c))) {
GST_WARNING_OBJECT (c->object, "Failed to get source info: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
c->operation_success = 0;
while (pa_operation_get_state (o) != PA_OPERATION_DONE) {
pa_threaded_mainloop_wait (c->mainloop);
CHECK_DEAD_GOTO (c, unlock_and_fail);
}
pa_operation_unref (o);
o = NULL;
if (!c->operation_success) {
GST_WARNING_OBJECT (c->object, "Failed to get source info: %s",
pa_strerror (pa_context_errno (c->context)));
goto unlock_and_fail;
}
}
g_assert (c->type != GST_PULSEMIXER_UNKNOWN);
c->track = gst_pulsemixer_track_new (c);
c->tracklist = g_list_append (c->tracklist, c->track);
pa_threaded_mainloop_unlock (c->mainloop);
g_free (name);
return TRUE;
unlock_and_fail:
if (o)
pa_operation_unref (o);
if (c->mainloop)
pa_threaded_mainloop_unlock (c->mainloop);
g_free (name);
return FALSE;
}
int force_volume(char* source_name, pa_volume_t desired_volume) {
// Create a mainloop
pa_mainloop* pa_ml = pa_mainloop_new();
pa_mainloop_api* pa_mlapi = pa_mainloop_get_api(pa_ml);
// Establish PA context
pa_context* pa_ctx = pa_context_new(pa_mlapi, "uneven");
pa_context_connect(pa_ctx, NULL, 0, NULL);
// Set up PA state callback
int pa_state = 0;
pa_context_set_state_callback(pa_ctx, pa_state_cb, &pa_state);
// Set up event subscription
int state = 0;
pa_context_set_subscribe_callback(pa_ctx, source_state_cb, &state);
// Prepare loop variables
pa_operation* pending_op = NULL;
pa_cvolume current_volume = {0, {0}};
int do_update;
int i;
// Iterate PA mainloop until we're done or the context enters an error state
while (done == -1 && pa_state != 2) {
pa_mainloop_iterate(pa_ml, 1, NULL);
// Can't do anything unless PA is ready
if (pa_state == 1) {
// Wait for any pending operation to complete
if (!pending_op || (pending_op && pa_operation_get_state(pending_op) == PA_OPERATION_DONE)) {
if (pending_op) {
pa_operation_unref(pending_op);
pending_op = NULL;
}
switch (state) {
case 0:
// Subscribe to source events
pending_op = pa_context_subscribe(pa_ctx, PA_SUBSCRIPTION_MASK_SOURCE, NULL, NULL);
state = 2;
break;
case 1:
// Idle
break;
case 2:
// Source change detected, retrive volume information
pending_op = pa_context_get_source_info_by_name(pa_ctx, source_name, get_volume_cb, ¤t_volume);
state++;
break;
case 3:
// Check channel volumes and reset if required
do_update = 0;
for (i = 0; i < current_volume.channels; i++) {
if (current_volume.values[i] != desired_volume) {
do_update = 1;
current_volume.values[i] = desired_volume;
}
}
if (do_update) {
pending_op = pa_context_set_source_volume_by_name(pa_ctx, source_name, ¤t_volume, NULL, NULL);
}
state = 1;
break;
default:
fprintf(stderr, "in state %d\n", state);
done = 2;
}
}
}
}
// Clean up
pa_context_disconnect(pa_ctx);
pa_context_unref(pa_ctx);
pa_mainloop_free(pa_ml);
return done;
}
