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gvc-mixer-control.c
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gvc-mixer-control.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2006-2008 Lennart Poettering
* Copyright (C) 2008 Sjoerd Simons <sjoerd@luon.net>
* Copyright (C) 2008 William Jon McCann
* Copyright (C) 2012 Conor Curran
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <glib.h>
#include <glib/gi18n-lib.h>
#include <pulse/pulseaudio.h>
#include <pulse/glib-mainloop.h>
#include <pulse/ext-stream-restore.h>
#ifdef HAVE_ALSA
#include <alsa/asoundlib.h>
#endif /* HAVE_ALSA */
#include "gvc-mixer-control.h"
#include "gvc-mixer-sink.h"
#include "gvc-mixer-source.h"
#include "gvc-mixer-sink-input.h"
#include "gvc-mixer-source-output.h"
#include "gvc-mixer-event-role.h"
#include "gvc-mixer-card.h"
#include "gvc-mixer-card-private.h"
#include "gvc-channel-map-private.h"
#include "gvc-mixer-control-private.h"
#include "gvc-mixer-ui-device.h"
#define RECONNECT_DELAY 5
enum {
PROP_0,
PROP_NAME
};
struct GvcMixerControlPrivate
{
pa_glib_mainloop *pa_mainloop;
pa_mainloop_api *pa_api;
pa_context *pa_context;
guint server_protocol_version;
int n_outstanding;
guint reconnect_id;
char *name;
gboolean default_sink_is_set;
guint default_sink_id;
char *default_sink_name;
gboolean default_source_is_set;
guint default_source_id;
char *default_source_name;
gboolean event_sink_input_is_set;
guint event_sink_input_id;
GHashTable *all_streams;
GHashTable *sinks; /* fixed outputs */
GHashTable *sources; /* fixed inputs */
GHashTable *sink_inputs; /* routable output streams */
GHashTable *source_outputs; /* routable input streams */
GHashTable *clients;
GHashTable *cards;
GvcMixerStream *new_default_sink_stream; /* new default sink stream, used in gvc_mixer_control_set_default_sink () */
GvcMixerStream *new_default_source_stream; /* new default source stream, used in gvc_mixer_control_set_default_source () */
GHashTable *ui_outputs; /* UI visible outputs */
GHashTable *ui_inputs; /* UI visible inputs */
/* When we change profile on a device that is not the server default sink,
* it will jump back to the default sink set by the server to prevent the
* audio setup from being 'outputless'.
*
* All well and good but then when we get the new stream created for the
* new profile how do we know that this is the intended default or selected
* device the user wishes to use. */
guint profile_swapping_device_id;
#ifdef HAVE_ALSA
int headset_card;
gboolean has_headsetmic;
gboolean has_headphonemic;
gboolean headset_plugged_in;
char *headphones_name;
char *headsetmic_name;
char *headphonemic_name;
char *internalspk_name;
char *internalmic_name;
#endif /* HAVE_ALSA */
GvcMixerControlState state;
};
enum {
STATE_CHANGED,
STREAM_ADDED,
STREAM_REMOVED,
STREAM_CHANGED,
CARD_ADDED,
CARD_REMOVED,
DEFAULT_SINK_CHANGED,
DEFAULT_SOURCE_CHANGED,
ACTIVE_OUTPUT_UPDATE,
ACTIVE_INPUT_UPDATE,
OUTPUT_ADDED,
INPUT_ADDED,
OUTPUT_REMOVED,
INPUT_REMOVED,
AUDIO_DEVICE_SELECTION_NEEDED,
LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0, };
static void gvc_mixer_control_finalize (GObject *object);
G_DEFINE_TYPE_WITH_PRIVATE (GvcMixerControl, gvc_mixer_control, G_TYPE_OBJECT)
pa_context *
gvc_mixer_control_get_pa_context (GvcMixerControl *control)
{
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
return control->priv->pa_context;
}
/**
* gvc_mixer_control_get_event_sink_input:
* @control:
*
* Returns: (transfer none):
*/
GvcMixerStream *
gvc_mixer_control_get_event_sink_input (GvcMixerControl *control)
{
GvcMixerStream *stream;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
stream = g_hash_table_lookup (control->priv->all_streams,
GUINT_TO_POINTER (control->priv->event_sink_input_id));
return stream;
}
static void
gvc_mixer_control_stream_restore_cb (pa_context *c,
GvcMixerStream *new_stream,
const pa_ext_stream_restore_info *info,
GvcMixerControl *control)
{
pa_operation *o;
pa_ext_stream_restore_info new_info;
if (new_stream == NULL)
return;
new_info.name = info->name;
new_info.channel_map = info->channel_map;
new_info.volume = info->volume;
new_info.mute = info->mute;
new_info.device = gvc_mixer_stream_get_name (new_stream);
o = pa_ext_stream_restore_write (control->priv->pa_context,
PA_UPDATE_REPLACE,
&new_info, 1,
TRUE, NULL, NULL);
if (o == NULL) {
g_warning ("pa_ext_stream_restore_write() failed: %s",
pa_strerror (pa_context_errno (control->priv->pa_context)));
return;
}
g_debug ("Changed default device for %s to %s", info->name, new_info.device);
pa_operation_unref (o);
}
static void
gvc_mixer_control_stream_restore_sink_cb (pa_context *c,
const pa_ext_stream_restore_info *info,
int eol,
void *userdata)
{
GvcMixerControl *control = (GvcMixerControl *) userdata;
if (eol || info == NULL || !g_str_has_prefix(info->name, "sink-input-by"))
return;
gvc_mixer_control_stream_restore_cb (c, control->priv->new_default_sink_stream, info, control);
}
static void
gvc_mixer_control_stream_restore_source_cb (pa_context *c,
const pa_ext_stream_restore_info *info,
int eol,
void *userdata)
{
GvcMixerControl *control = (GvcMixerControl *) userdata;
if (eol || info == NULL || !g_str_has_prefix(info->name, "source-output-by"))
return;
gvc_mixer_control_stream_restore_cb (c, control->priv->new_default_source_stream, info, control);
}
/**
* gvc_mixer_control_lookup_device_from_stream:
* @control:
* @stream:
*
* Returns: (transfer none): a #GvcUIDevice or %NULL
*/
GvcMixerUIDevice *
gvc_mixer_control_lookup_device_from_stream (GvcMixerControl *control,
GvcMixerStream *stream)
{
GList *devices, *d;
gboolean is_network_stream;
const GList *ports;
GvcMixerUIDevice *ret;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), NULL);
if (GVC_IS_MIXER_SOURCE (stream))
devices = g_hash_table_get_values (control->priv->ui_inputs);
else
devices = g_hash_table_get_values (control->priv->ui_outputs);
ret = NULL;
ports = gvc_mixer_stream_get_ports (stream);
is_network_stream = (ports == NULL);
for (d = devices; d != NULL; d = d->next) {
GvcMixerUIDevice *device = d->data;
guint stream_id = G_MAXUINT;
g_object_get (G_OBJECT (device),
"stream-id", &stream_id,
NULL);
if (is_network_stream &&
stream_id == gvc_mixer_stream_get_id (stream)) {
g_debug ("lookup device from stream - %s - it is a network_stream ",
gvc_mixer_ui_device_get_description (device));
ret = device;
break;
} else if (!is_network_stream) {
const GvcMixerStreamPort *port;
port = gvc_mixer_stream_get_port (stream);
if (stream_id == gvc_mixer_stream_get_id (stream) &&
g_strcmp0 (gvc_mixer_ui_device_get_port (device),
port->port) == 0) {
g_debug ("lookup-device-from-stream found device: device description '%s', device port = '%s', device stream id %i AND stream port = '%s' stream id '%u' and stream description '%s'",
gvc_mixer_ui_device_get_description (device),
gvc_mixer_ui_device_get_port (device),
stream_id,
port->port,
gvc_mixer_stream_get_id (stream),
gvc_mixer_stream_get_description (stream));
ret = device;
break;
}
}
}
g_debug ("gvc_mixer_control_lookup_device_from_stream - Could not find a device for stream '%s'",gvc_mixer_stream_get_description (stream));
g_list_free (devices);
return ret;
}
gboolean
gvc_mixer_control_set_default_sink (GvcMixerControl *control,
GvcMixerStream *stream)
{
pa_operation *o;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), FALSE);
g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
g_debug ("about to set default sink on server");
o = pa_context_set_default_sink (control->priv->pa_context,
gvc_mixer_stream_get_name (stream),
NULL,
NULL);
if (o == NULL) {
g_warning ("pa_context_set_default_sink() failed: %s",
pa_strerror (pa_context_errno (control->priv->pa_context)));
return FALSE;
}
pa_operation_unref (o);
control->priv->new_default_sink_stream = stream;
g_object_add_weak_pointer (G_OBJECT (stream), (gpointer *) &control->priv->new_default_sink_stream);
o = pa_ext_stream_restore_read (control->priv->pa_context,
gvc_mixer_control_stream_restore_sink_cb,
control);
if (o == NULL) {
g_warning ("pa_ext_stream_restore_read() failed: %s",
pa_strerror (pa_context_errno (control->priv->pa_context)));
return FALSE;
}
pa_operation_unref (o);
return TRUE;
}
gboolean
gvc_mixer_control_set_default_source (GvcMixerControl *control,
GvcMixerStream *stream)
{
GvcMixerUIDevice* input;
pa_operation *o;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), FALSE);
g_return_val_if_fail (GVC_IS_MIXER_STREAM (stream), FALSE);
o = pa_context_set_default_source (control->priv->pa_context,
gvc_mixer_stream_get_name (stream),
NULL,
NULL);
if (o == NULL) {
g_warning ("pa_context_set_default_source() failed");
return FALSE;
}
pa_operation_unref (o);
control->priv->new_default_source_stream = stream;
g_object_add_weak_pointer (G_OBJECT (stream), (gpointer *) &control->priv->new_default_source_stream);
o = pa_ext_stream_restore_read (control->priv->pa_context,
gvc_mixer_control_stream_restore_source_cb,
control);
if (o == NULL) {
g_warning ("pa_ext_stream_restore_read() failed: %s",
pa_strerror (pa_context_errno (control->priv->pa_context)));
return FALSE;
}
pa_operation_unref (o);
/* source change successful, update the UI. */
input = gvc_mixer_control_lookup_device_from_stream (control, stream);
g_signal_emit (G_OBJECT (control),
signals[ACTIVE_INPUT_UPDATE],
0,
gvc_mixer_ui_device_get_id (input));
return TRUE;
}
/**
* gvc_mixer_control_get_default_sink:
* @control:
*
* Returns: (transfer none):
*/
GvcMixerStream *
gvc_mixer_control_get_default_sink (GvcMixerControl *control)
{
GvcMixerStream *stream;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
if (control->priv->default_sink_is_set) {
stream = g_hash_table_lookup (control->priv->all_streams,
GUINT_TO_POINTER (control->priv->default_sink_id));
} else {
stream = NULL;
}
return stream;
}
/**
* gvc_mixer_control_get_default_source:
* @control:
*
* Returns: (transfer none):
*/
GvcMixerStream *
gvc_mixer_control_get_default_source (GvcMixerControl *control)
{
GvcMixerStream *stream;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
if (control->priv->default_source_is_set) {
stream = g_hash_table_lookup (control->priv->all_streams,
GUINT_TO_POINTER (control->priv->default_source_id));
} else {
stream = NULL;
}
return stream;
}
static gpointer
gvc_mixer_control_lookup_id (GHashTable *hash_table,
guint id)
{
return g_hash_table_lookup (hash_table,
GUINT_TO_POINTER (id));
}
/**
* gvc_mixer_control_lookup_stream_id:
* @control:
* @id:
*
* Returns: (transfer none):
*/
GvcMixerStream *
gvc_mixer_control_lookup_stream_id (GvcMixerControl *control,
guint id)
{
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
return gvc_mixer_control_lookup_id (control->priv->all_streams, id);
}
/**
* gvc_mixer_control_lookup_card_id:
* @control:
* @id:
*
* Returns: (transfer none):
*/
GvcMixerCard *
gvc_mixer_control_lookup_card_id (GvcMixerControl *control,
guint id)
{
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
return gvc_mixer_control_lookup_id (control->priv->cards, id);
}
/**
* gvc_mixer_control_lookup_output_id:
* @control:
* @id:
*
* Returns: (transfer none):
*/
GvcMixerUIDevice *
gvc_mixer_control_lookup_output_id (GvcMixerControl *control,
guint id)
{
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
return gvc_mixer_control_lookup_id (control->priv->ui_outputs, id);
}
/**
* gvc_mixer_control_lookup_input_id:
* @control:
* @id:
*
* Returns: (transfer none):
*/
GvcMixerUIDevice *
gvc_mixer_control_lookup_input_id (GvcMixerControl *control,
guint id)
{
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
return gvc_mixer_control_lookup_id (control->priv->ui_inputs, id);
}
/**
* gvc_mixer_control_get_stream_from_device:
* @control:
* @device:
*
* Returns: (transfer none):
*/
GvcMixerStream *
gvc_mixer_control_get_stream_from_device (GvcMixerControl *control,
GvcMixerUIDevice *device)
{
gint stream_id;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
g_return_val_if_fail (GVC_IS_MIXER_UI_DEVICE (device), NULL);
stream_id = gvc_mixer_ui_device_get_stream_id (device);
if (stream_id == GVC_MIXER_UI_DEVICE_INVALID) {
g_debug ("gvc_mixer_control_get_stream_from_device - device has a null stream");
return NULL;
}
return gvc_mixer_control_lookup_stream_id (control, stream_id);
}
/**
* gvc_mixer_control_change_profile_on_selected_device:
* @control:
* @device:
* @profile: (allow-none): Can be %NULL if any profile present on this port is okay
*
* Returns: This method will attempt to swap the profile on the card of
* the device with given profile name. If successful it will set the
* preferred profile on that device so as we know the next time the user
* moves to that device it should have this profile active.
*/
gboolean
gvc_mixer_control_change_profile_on_selected_device (GvcMixerControl *control,
GvcMixerUIDevice *device,
const gchar *profile)
{
const gchar *best_profile;
GvcMixerCardProfile *current_profile;
GvcMixerCard *card;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), FALSE);
g_return_val_if_fail (GVC_IS_MIXER_UI_DEVICE (device), FALSE);
g_object_get (G_OBJECT (device), "card", &card, NULL);
current_profile = gvc_mixer_card_get_profile (card);
if (current_profile)
best_profile = gvc_mixer_ui_device_get_best_profile (device, profile, current_profile->profile);
else
best_profile = profile;
g_assert (best_profile);
g_debug ("Selected '%s', moving to profile '%s' on card '%s' on stream id %i",
profile ? profile : "(any)", best_profile,
gvc_mixer_card_get_name (card),
gvc_mixer_ui_device_get_stream_id (device));
g_debug ("default sink name = %s and default sink id %u",
control->priv->default_sink_name,
control->priv->default_sink_id);
control->priv->profile_swapping_device_id = gvc_mixer_ui_device_get_id (device);
if (gvc_mixer_card_change_profile (card, best_profile)) {
gvc_mixer_ui_device_set_user_preferred_profile (device, best_profile);
return TRUE;
}
return FALSE;
}
/**
* gvc_mixer_control_change_output:
* @control:
* @output:
* This method is called from the UI when the user selects a previously unselected device.
* - Firstly it queries the stream from the device.
* - It assumes that if the stream is null that it cannot be a bluetooth or network stream (they never show unless they have valid sinks and sources)
* In the scenario of a NULL stream on the device
* - It fetches the device's preferred profile or if NUll the profile with the highest priority on that device.
* - It then caches this device in control->priv->cached_desired_output_id so that when the update_sink triggered
* from when we attempt to change profile we will know exactly what device to highlight on that stream.
* - It attempts to swap the profile on the card from that device and returns.
* - Next, it handles network or bluetooth streams that only require their stream to be made the default.
* - Next it deals with port changes so if the stream's active port is not the same as the port on the device
* it will attempt to change the port on that stream to be same as the device. If this fails it will return.
* - Finally it will set this new stream to be the default stream and emit a signal for the UI confirming the active output device.
*/
void
gvc_mixer_control_change_output (GvcMixerControl *control,
GvcMixerUIDevice* output)
{
GvcMixerStream *stream;
GvcMixerStream *default_stream;
const GvcMixerStreamPort *active_port;
const gchar *output_port;
g_return_if_fail (GVC_IS_MIXER_CONTROL (control));
g_return_if_fail (GVC_IS_MIXER_UI_DEVICE (output));
g_debug ("control change output");
stream = gvc_mixer_control_get_stream_from_device (control, output);
if (stream == NULL) {
gvc_mixer_control_change_profile_on_selected_device (control,
output, NULL);
return;
}
/* Handle a network sink as a portless or cardless device */
if (!gvc_mixer_ui_device_has_ports (output)) {
g_debug ("Did we try to move to a software/bluetooth sink ?");
if (gvc_mixer_control_set_default_sink (control, stream)) {
/* sink change was successful, update the UI.*/
g_signal_emit (G_OBJECT (control),
signals[ACTIVE_OUTPUT_UPDATE],
0,
gvc_mixer_ui_device_get_id (output));
}
else {
g_warning ("Failed to set default sink with stream from output %s",
gvc_mixer_ui_device_get_description (output));
}
return;
}
active_port = gvc_mixer_stream_get_port (stream);
output_port = gvc_mixer_ui_device_get_port (output);
/* First ensure the correct port is active on the sink */
if (g_strcmp0 (active_port->port, output_port) != 0) {
g_debug ("Port change, switch to = %s", output_port);
if (gvc_mixer_stream_change_port (stream, output_port) == FALSE) {
g_warning ("Could not change port !");
return;
}
}
default_stream = gvc_mixer_control_get_default_sink (control);
/* Finally if we are not on the correct stream, swap over. */
if (stream != default_stream) {
GvcMixerUIDevice* device;
g_debug ("Attempting to swap over to stream %s ",
gvc_mixer_stream_get_description (stream));
if (gvc_mixer_control_set_default_sink (control, stream)) {
device = gvc_mixer_control_lookup_device_from_stream (control, stream);
g_signal_emit (G_OBJECT (control),
signals[ACTIVE_OUTPUT_UPDATE],
0,
gvc_mixer_ui_device_get_id (device));
} else {
/* If the move failed for some reason reset the UI. */
device = gvc_mixer_control_lookup_device_from_stream (control, default_stream);
g_signal_emit (G_OBJECT (control),
signals[ACTIVE_OUTPUT_UPDATE],
0,
gvc_mixer_ui_device_get_id (device));
}
}
}
/**
* gvc_mixer_control_change_input:
* @control:
* @input:
* This method is called from the UI when the user selects a previously unselected device.
* - Firstly it queries the stream from the device.
* - It assumes that if the stream is null that it cannot be a bluetooth or network stream (they never show unless they have valid sinks and sources)
* In the scenario of a NULL stream on the device
* - It fetches the device's preferred profile or if NUll the profile with the highest priority on that device.
* - It then caches this device in control->priv->cached_desired_input_id so that when the update_source triggered
* from when we attempt to change profile we will know exactly what device to highlight on that stream.
* - It attempts to swap the profile on the card from that device and returns.
* - Next, it handles network or bluetooth streams that only require their stream to be made the default.
* - Next it deals with port changes so if the stream's active port is not the same as the port on the device
* it will attempt to change the port on that stream to be same as the device. If this fails it will return.
* - Finally it will set this new stream to be the default stream and emit a signal for the UI confirming the active input device.
*/
void
gvc_mixer_control_change_input (GvcMixerControl *control,
GvcMixerUIDevice* input)
{
GvcMixerStream *stream;
GvcMixerStream *default_stream;
const GvcMixerStreamPort *active_port;
const gchar *input_port;
g_return_if_fail (GVC_IS_MIXER_CONTROL (control));
g_return_if_fail (GVC_IS_MIXER_UI_DEVICE (input));
stream = gvc_mixer_control_get_stream_from_device (control, input);
if (stream == NULL) {
gvc_mixer_control_change_profile_on_selected_device (control,
input, NULL);
return;
}
/* Handle a network sink as a portless/cardless device */
if (!gvc_mixer_ui_device_has_ports (input)) {
g_debug ("Did we try to move to a software/bluetooth source ?");
if (! gvc_mixer_control_set_default_source (control, stream)) {
g_warning ("Failed to set default source with stream from input %s",
gvc_mixer_ui_device_get_description (input));
}
return;
}
active_port = gvc_mixer_stream_get_port (stream);
input_port = gvc_mixer_ui_device_get_port (input);
/* First ensure the correct port is active on the sink */
if (g_strcmp0 (active_port->port, input_port) != 0) {
g_debug ("Port change, switch to = %s", input_port);
if (gvc_mixer_stream_change_port (stream, input_port) == FALSE) {
g_warning ("Could not change port!");
return;
}
}
default_stream = gvc_mixer_control_get_default_source (control);
/* Finally if we are not on the correct stream, swap over. */
if (stream != default_stream) {
g_debug ("change-input - attempting to swap over to stream %s",
gvc_mixer_stream_get_description (stream));
gvc_mixer_control_set_default_source (control, stream);
}
}
static void
listify_hash_values_hfunc (gpointer key,
gpointer value,
gpointer user_data)
{
GSList **list = user_data;
*list = g_slist_prepend (*list, value);
}
static int
gvc_name_collate (const char *namea,
const char *nameb)
{
if (nameb == NULL && namea == NULL)
return 0;
if (nameb == NULL)
return 1;
if (namea == NULL)
return -1;
return g_utf8_collate (namea, nameb);
}
static int
gvc_card_collate (GvcMixerCard *a,
GvcMixerCard *b)
{
const char *namea;
const char *nameb;
g_return_val_if_fail (a == NULL || GVC_IS_MIXER_CARD (a), 0);
g_return_val_if_fail (b == NULL || GVC_IS_MIXER_CARD (b), 0);
namea = gvc_mixer_card_get_name (a);
nameb = gvc_mixer_card_get_name (b);
return gvc_name_collate (namea, nameb);
}
/**
* gvc_mixer_control_get_cards:
* @control:
*
* Returns: (transfer container) (element-type GvcMixerCard):
*/
GSList *
gvc_mixer_control_get_cards (GvcMixerControl *control)
{
GSList *retval;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
retval = NULL;
g_hash_table_foreach (control->priv->cards,
listify_hash_values_hfunc,
&retval);
return g_slist_sort (retval, (GCompareFunc) gvc_card_collate);
}
static int
gvc_stream_collate (GvcMixerStream *a,
GvcMixerStream *b)
{
const char *namea;
const char *nameb;
g_return_val_if_fail (a == NULL || GVC_IS_MIXER_STREAM (a), 0);
g_return_val_if_fail (b == NULL || GVC_IS_MIXER_STREAM (b), 0);
namea = gvc_mixer_stream_get_name (a);
nameb = gvc_mixer_stream_get_name (b);
return gvc_name_collate (namea, nameb);
}
/**
* gvc_mixer_control_get_streams:
* @control:
*
* Returns: (transfer container) (element-type GvcMixerStream):
*/
GSList *
gvc_mixer_control_get_streams (GvcMixerControl *control)
{
GSList *retval;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
retval = NULL;
g_hash_table_foreach (control->priv->all_streams,
listify_hash_values_hfunc,
&retval);
return g_slist_sort (retval, (GCompareFunc) gvc_stream_collate);
}
/**
* gvc_mixer_control_get_sinks:
* @control:
*
* Returns: (transfer container) (element-type GvcMixerSink):
*/
GSList *
gvc_mixer_control_get_sinks (GvcMixerControl *control)
{
GSList *retval;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
retval = NULL;
g_hash_table_foreach (control->priv->sinks,
listify_hash_values_hfunc,
&retval);
return g_slist_sort (retval, (GCompareFunc) gvc_stream_collate);
}
/**
* gvc_mixer_control_get_sources:
* @control:
*
* Returns: (transfer container) (element-type GvcMixerSource):
*/
GSList *
gvc_mixer_control_get_sources (GvcMixerControl *control)
{
GSList *retval;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
retval = NULL;
g_hash_table_foreach (control->priv->sources,
listify_hash_values_hfunc,
&retval);
return g_slist_sort (retval, (GCompareFunc) gvc_stream_collate);
}
/**
* gvc_mixer_control_get_sink_inputs:
* @control:
*
* Returns: (transfer container) (element-type GvcMixerSinkInput):
*/
GSList *
gvc_mixer_control_get_sink_inputs (GvcMixerControl *control)
{
GSList *retval;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
retval = NULL;
g_hash_table_foreach (control->priv->sink_inputs,
listify_hash_values_hfunc,
&retval);
return g_slist_sort (retval, (GCompareFunc) gvc_stream_collate);
}
/**
* gvc_mixer_control_get_source_outputs:
* @control:
*
* Returns: (transfer container) (element-type GvcMixerSourceOutput):
*/
GSList *
gvc_mixer_control_get_source_outputs (GvcMixerControl *control)
{
GSList *retval;
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), NULL);
retval = NULL;
g_hash_table_foreach (control->priv->source_outputs,
listify_hash_values_hfunc,
&retval);
return g_slist_sort (retval, (GCompareFunc) gvc_stream_collate);
}
static void
dec_outstanding (GvcMixerControl *control)
{
if (control->priv->n_outstanding <= 0) {
return;
}
if (--control->priv->n_outstanding <= 0) {
control->priv->state = GVC_STATE_READY;
g_signal_emit (G_OBJECT (control), signals[STATE_CHANGED], 0, GVC_STATE_READY);
}
}
GvcMixerControlState
gvc_mixer_control_get_state (GvcMixerControl *control)
{
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), GVC_STATE_CLOSED);
return control->priv->state;
}
static void
on_default_source_port_notify (GObject *object,
GParamSpec *pspec,
GvcMixerControl *control)
{
char *port;
GvcMixerUIDevice *input;
g_object_get (object, "port", &port, NULL);
input = gvc_mixer_control_lookup_device_from_stream (control,
GVC_MIXER_STREAM (object));
g_debug ("on_default_source_port_notify - moved to port '%s' which SHOULD ?? correspond to output '%s'",
port,
gvc_mixer_ui_device_get_description (input));
g_signal_emit (G_OBJECT (control),
signals[ACTIVE_INPUT_UPDATE],
0,
gvc_mixer_ui_device_get_id (input));
g_free (port);
}
static void
_set_default_source (GvcMixerControl *control,
GvcMixerStream *stream)
{
guint new_id;
if (stream == NULL) {
control->priv->default_source_id = 0;
control->priv->default_source_is_set = FALSE;
g_signal_emit (control,
signals[DEFAULT_SOURCE_CHANGED],
0,
PA_INVALID_INDEX);
return;
}
new_id = gvc_mixer_stream_get_id (stream);
if (control->priv->default_source_id != new_id) {
GvcMixerUIDevice *input;
control->priv->default_source_id = new_id;
control->priv->default_source_is_set = TRUE;
g_signal_emit (control,
signals[DEFAULT_SOURCE_CHANGED],
0,
new_id);
if (control->priv->default_source_is_set) {
g_signal_handlers_disconnect_by_func (gvc_mixer_control_get_default_source (control),
on_default_source_port_notify,
control);
}
g_signal_connect (stream,
"notify::port",
G_CALLBACK (on_default_source_port_notify),
control);
input = gvc_mixer_control_lookup_device_from_stream (control, stream);
g_signal_emit (G_OBJECT (control),
signals[ACTIVE_INPUT_UPDATE],