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-rw-r--r--backends/alsa/Makefile.am47
-rw-r--r--backends/alsa/alsa-backend.c508
-rw-r--r--backends/alsa/alsa-backend.h62
-rw-r--r--backends/alsa/alsa-constants.c72
-rw-r--r--backends/alsa/alsa-constants.h35
-rw-r--r--backends/alsa/alsa-device.c941
-rw-r--r--backends/alsa/alsa-device.h74
-rw-r--r--backends/alsa/alsa-element.c53
-rw-r--r--backends/alsa/alsa-element.h61
-rw-r--r--backends/alsa/alsa-stream-control.c739
-rw-r--r--backends/alsa/alsa-stream-control.h111
-rw-r--r--backends/alsa/alsa-stream-input-control.c329
-rw-r--r--backends/alsa/alsa-stream-input-control.h64
-rw-r--r--backends/alsa/alsa-stream-output-control.c329
-rw-r--r--backends/alsa/alsa-stream-output-control.h64
-rw-r--r--backends/alsa/alsa-stream.c273
-rw-r--r--backends/alsa/alsa-stream.h88
-rw-r--r--backends/alsa/alsa-switch-option.c74
-rw-r--r--backends/alsa/alsa-switch-option.h68
-rw-r--r--backends/alsa/alsa-switch.c227
-rw-r--r--backends/alsa/alsa-switch.h65
-rw-r--r--backends/alsa/alsa-toggle.c219
-rw-r--r--backends/alsa/alsa-toggle.h74
23 files changed, 4577 insertions, 0 deletions
diff --git a/backends/alsa/Makefile.am b/backends/alsa/Makefile.am
new file mode 100644
index 0000000..220bb3b
--- /dev/null
+++ b/backends/alsa/Makefile.am
@@ -0,0 +1,47 @@
+backenddir = $(libdir)/libmatemixer
+
+backend_LTLIBRARIES = libmatemixer-alsa.la
+
+AM_CPPFLAGS = \
+ -I$(top_srcdir) \
+ -DG_LOG_DOMAIN=\"libmatemixer-alsa\"
+
+libmatemixer_alsa_la_CFLAGS = \
+ $(GLIB_CFLAGS) \
+ $(ALSA_CFLAGS)
+
+libmatemixer_alsa_la_SOURCES = \
+ alsa-backend.c \
+ alsa-backend.h \
+ alsa-constants.c \
+ alsa-constants.h \
+ alsa-device.c \
+ alsa-device.h \
+ alsa-element.c \
+ alsa-element.h \
+ alsa-stream.c \
+ alsa-stream.h \
+ alsa-stream-control.c \
+ alsa-stream-control.h \
+ alsa-stream-input-control.c \
+ alsa-stream-input-control.h \
+ alsa-stream-output-control.c \
+ alsa-stream-output-control.h \
+ alsa-switch.c \
+ alsa-switch.h \
+ alsa-switch-option.c \
+ alsa-switch-option.h \
+ alsa-toggle.c \
+ alsa-toggle.h
+
+libmatemixer_alsa_la_LIBADD = \
+ $(GLIB_LIBS) \
+ $(ALSA_LIBS)
+
+libmatemixer_alsa_la_LDFLAGS = \
+ -avoid-version \
+ -no-undefined \
+ -export-dynamic \
+ -module
+
+-include $(top_srcdir)/git.mk
diff --git a/backends/alsa/alsa-backend.c b/backends/alsa/alsa-backend.c
new file mode 100644
index 0000000..7a17b85
--- /dev/null
+++ b/backends/alsa/alsa-backend.c
@@ -0,0 +1,508 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "alsa-backend.h"
+#include "alsa-device.h"
+#include "alsa-stream.h"
+
+#define BACKEND_NAME "ALSA"
+#define BACKEND_PRIORITY 9
+
+struct _AlsaBackendPrivate
+{
+ GSource *timeout_source;
+ GHashTable *devices;
+ GHashTable *devices_ids;
+};
+
+static void alsa_backend_class_init (AlsaBackendClass *klass);
+static void alsa_backend_class_finalize (AlsaBackendClass *klass);
+static void alsa_backend_init (AlsaBackend *alsa);
+static void alsa_backend_dispose (GObject *object);
+static void alsa_backend_finalize (GObject *object);
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-function"
+G_DEFINE_DYNAMIC_TYPE (AlsaBackend, alsa_backend, MATE_MIXER_TYPE_BACKEND)
+#pragma clang diagnostic pop
+
+static gboolean alsa_backend_open (MateMixerBackend *backend);
+static void alsa_backend_close (MateMixerBackend *backend);
+static GList * alsa_backend_list_devices (MateMixerBackend *backend);
+static GList * alsa_backend_list_streams (MateMixerBackend *backend);
+
+static gboolean read_devices (AlsaBackend *alsa);
+
+static gboolean read_device (AlsaBackend *alsa,
+ const gchar *card);
+
+static void add_device (AlsaBackend *alsa,
+ AlsaDevice *device);
+
+static void remove_device (AlsaBackend *alsa,
+ AlsaDevice *device);
+static void remove_stream (AlsaBackend *alsa,
+ const gchar *name);
+
+static void select_default_input_stream (AlsaBackend *alsa);
+static void select_default_output_stream (AlsaBackend *alsa);
+
+static MateMixerBackendInfo info;
+
+void
+backend_module_init (GTypeModule *module)
+{
+ alsa_backend_register_type (module);
+
+ info.name = BACKEND_NAME;
+ info.priority = BACKEND_PRIORITY;
+ info.g_type = ALSA_TYPE_BACKEND;
+ info.backend_type = MATE_MIXER_BACKEND_ALSA;
+}
+
+const MateMixerBackendInfo *backend_module_get_info (void)
+{
+ return &info;
+}
+
+static void
+alsa_backend_class_init (AlsaBackendClass *klass)
+{
+ GObjectClass *object_class;
+ MateMixerBackendClass *backend_class;
+
+ object_class = G_OBJECT_CLASS (klass);
+ object_class->dispose = alsa_backend_dispose;
+ object_class->finalize = alsa_backend_finalize;
+
+ backend_class = MATE_MIXER_BACKEND_CLASS (klass);
+ backend_class->open = alsa_backend_open;
+ backend_class->close = alsa_backend_close;
+ backend_class->list_devices = alsa_backend_list_devices;
+ backend_class->list_streams = alsa_backend_list_streams;
+
+ g_type_class_add_private (object_class, sizeof (AlsaBackendPrivate));
+}
+
+/* Called in the code generated by G_DEFINE_DYNAMIC_TYPE() */
+static void
+alsa_backend_class_finalize (AlsaBackendClass *klass)
+{
+}
+
+static void
+alsa_backend_init (AlsaBackend *alsa)
+{
+ alsa->priv = G_TYPE_INSTANCE_GET_PRIVATE (alsa,
+ ALSA_TYPE_BACKEND,
+ AlsaBackendPrivate);
+
+ alsa->priv->devices = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ g_object_unref);
+
+ alsa->priv->devices_ids = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ NULL);
+}
+
+static void
+alsa_backend_dispose (GObject *object)
+{
+ MateMixerBackend *backend;
+ MateMixerState state;
+
+ backend = MATE_MIXER_BACKEND (object);
+
+ state = mate_mixer_backend_get_state (backend);
+ if (state != MATE_MIXER_STATE_IDLE)
+ alsa_backend_close (backend);
+
+ G_OBJECT_CLASS (alsa_backend_parent_class)->dispose (object);
+}
+
+static void
+alsa_backend_finalize (GObject *object)
+{
+ AlsaBackend *alsa;
+
+ alsa = ALSA_BACKEND (object);
+
+ g_hash_table_unref (alsa->priv->devices);
+ g_hash_table_unref (alsa->priv->devices_ids);
+
+ G_OBJECT_CLASS (alsa_backend_parent_class)->finalize (object);
+}
+
+static gboolean
+alsa_backend_open (MateMixerBackend *backend)
+{
+ AlsaBackend *alsa;
+
+ g_return_val_if_fail (ALSA_IS_BACKEND (backend), FALSE);
+
+ alsa = ALSA_BACKEND (backend);
+
+ /* Poll ALSA for changes every 500 milliseconds, this actually only
+ * discovers added or changed sound cards, sound card related events
+ * are handled by AlsaDevices */
+ alsa->priv->timeout_source = g_timeout_source_new_seconds (1);
+ g_source_set_callback (alsa->priv->timeout_source,
+ (GSourceFunc) read_devices,
+ alsa,
+ NULL);
+ g_source_attach (alsa->priv->timeout_source,
+ g_main_context_get_thread_default ());
+
+ /* Read the initial list of devices so we have some starting point, there
+ * isn't really a way to detect errors here, failing to add a device may
+ * be a device-related problem so make the backend always open successfully */
+ read_devices (alsa);
+
+ _mate_mixer_backend_set_state (backend, MATE_MIXER_STATE_READY);
+ return TRUE;
+}
+
+void
+alsa_backend_close (MateMixerBackend *backend)
+{
+ AlsaBackend *alsa;
+
+ g_return_if_fail (ALSA_IS_BACKEND (backend));
+
+ alsa = ALSA_BACKEND (backend);
+
+ g_source_destroy (alsa->priv->timeout_source);
+
+ g_hash_table_remove_all (alsa->priv->devices);
+ g_hash_table_remove_all (alsa->priv->devices_ids);
+
+ _mate_mixer_backend_set_state (backend, MATE_MIXER_STATE_IDLE);
+}
+
+static GList *
+alsa_backend_list_devices (MateMixerBackend *backend)
+{
+ GList *list;
+
+ g_return_val_if_fail (ALSA_IS_BACKEND (backend), NULL);
+
+ /* Convert the hash table to a linked list, this list is expected to be
+ * cached in the main library */
+ list = g_hash_table_get_values (ALSA_BACKEND (backend)->priv->devices);
+ if (list != NULL)
+ g_list_foreach (list, (GFunc) g_object_ref, NULL);
+
+ return list;
+}
+
+static GList *
+alsa_backend_list_streams (MateMixerBackend *backend)
+{
+ AlsaBackend *alsa;
+ GHashTableIter iter;
+ gpointer value;
+ GList *list = NULL;
+
+ g_return_val_if_fail (ALSA_IS_BACKEND (backend), NULL);
+
+ alsa = ALSA_BACKEND (backend);
+
+ /* We don't keep a list or hash table of all streams here, instead walk
+ * through the list of devices and create the list manually, each device
+ * has at most one input and one output stream */
+ g_hash_table_iter_init (&iter, alsa->priv->devices);
+
+ while (g_hash_table_iter_next (&iter, NULL, &value)) {
+ AlsaDevice *device = ALSA_DEVICE (value);
+ AlsaStream *stream;
+
+ stream = alsa_device_get_output_stream (device);
+ if (stream != NULL)
+ list = g_list_prepend (list, stream);
+ stream = alsa_device_get_input_stream (device);
+ if (stream != NULL)
+ list = g_list_prepend (list, stream);
+ }
+
+ if (list != NULL)
+ g_list_foreach (list, (GFunc) g_object_ref, NULL);
+
+ return list;
+}
+
+static gboolean
+read_devices (AlsaBackend *alsa)
+{
+ gint num;
+ gint ret;
+ gchar card[16];
+ gboolean changed = FALSE;
+
+ /* Read the default device first, it will be either one of the hardware cards
+ * that will be queried later, or a software mixer */
+ if (read_device (alsa, "default") == TRUE)
+ changed = TRUE;
+
+ for (num = -1;;) {
+ /* Read number of the next sound card */
+ ret = snd_card_next (&num);
+ if (ret < 0 ||
+ num < 0)
+ break;
+
+ g_snprintf (card, sizeof (card), "hw:%d", num);
+
+ if (read_device (alsa, card) == TRUE)
+ changed = TRUE;
+ }
+
+ /* If any card has been added, make sure we have the most suitable default
+ * input and output streams */
+ if (changed == TRUE) {
+ select_default_input_stream (alsa);
+ select_default_output_stream (alsa);
+ }
+ return G_SOURCE_CONTINUE;
+}
+
+static gboolean
+read_device (AlsaBackend *alsa, const gchar *card)
+{
+ AlsaDevice *device;
+ snd_ctl_t *ctl;
+ snd_ctl_card_info_t *info;
+ const gchar *id;
+ gint ret;
+
+ /* The device may be already known, remove it if it's known and fails
+ * to be read, this happens for example when PulseAudio is killed */
+ device = g_hash_table_lookup (alsa->priv->devices, card);
+
+ ret = snd_ctl_open (&ctl, card, 0);
+ if (ret < 0) {
+ g_warning ("Failed to open ALSA control for %s: %s",
+ card,
+ snd_strerror (ret));
+ if (device != NULL)
+ remove_device (alsa, device);
+ return FALSE;
+ }
+
+ snd_ctl_card_info_alloca (&info);
+
+ ret = snd_ctl_card_info (ctl, info);
+ if (ret < 0) {
+ g_warning ("Failed to read card info: %s", snd_strerror (ret));
+ if (device != NULL)
+ remove_device (alsa, device);
+
+ snd_ctl_close (ctl);
+ return FALSE;
+ }
+
+ id = snd_ctl_card_info_get_id (info);
+
+ /* We also keep a list of device identifiers to be sure no card is
+ * added twice, this could commonly happen because some card may
+ * also be assigned to the "default" ALSA device */
+ if (g_hash_table_contains (alsa->priv->devices_ids, id) == TRUE) {
+ snd_ctl_close (ctl);
+ return FALSE;
+ }
+
+ device = alsa_device_new (card, snd_ctl_card_info_get_name (info));
+
+ if (alsa_device_open (device) == FALSE) {
+ g_object_unref (device);
+ snd_ctl_close (ctl);
+ return FALSE;
+ }
+
+ g_object_set_data_full (G_OBJECT (device),
+ "__matemixer_alsa_device_id",
+ g_strdup (id),
+ g_free);
+
+ add_device (alsa, device);
+
+ snd_ctl_close (ctl);
+ return TRUE;
+}
+
+static void
+add_device (AlsaBackend *alsa, AlsaDevice *device)
+{
+ const gchar *name;
+
+ name = mate_mixer_device_get_name (MATE_MIXER_DEVICE (device));
+
+ g_hash_table_insert (alsa->priv->devices,
+ g_strdup (name),
+ g_object_ref (device));
+
+ /* Remember the device identifier, use a single string copy as we only free
+ * the hash table key */
+ g_hash_table_add (alsa->priv->devices_ids,
+ g_strdup (g_object_get_data (G_OBJECT (device),
+ "__matemixer_alsa_device_id")));
+
+ g_signal_connect_swapped (G_OBJECT (device),
+ "closed",
+ G_CALLBACK (remove_device),
+ alsa);
+ g_signal_connect_swapped (G_OBJECT (device),
+ "stream-removed",
+ G_CALLBACK (remove_stream),
+ alsa);
+
+ g_signal_emit_by_name (G_OBJECT (alsa), "device-added", name);
+
+ /* Load the device elements after emitting device-added, because the load
+ * function will most likely emit stream-added on the device and backend */
+ alsa_device_load (device);
+}
+
+static void
+remove_device (AlsaBackend *alsa, AlsaDevice *device)
+{
+ const gchar *name;
+
+ name = mate_mixer_device_get_name (MATE_MIXER_DEVICE (device));
+
+ g_signal_handlers_disconnect_by_func (G_OBJECT (device),
+ G_CALLBACK (remove_device),
+ alsa);
+ g_signal_handlers_disconnect_by_func (G_OBJECT (device),
+ G_CALLBACK (remove_stream),
+ alsa);
+
+ /* Remove the device */
+ g_hash_table_remove (alsa->priv->devices_ids,
+ g_object_get_data (G_OBJECT (device),
+ "__matemixer_alsa_device_id"));
+
+ // XXX close the device and make it remove streams
+ g_hash_table_remove (alsa->priv->devices, name);
+ g_signal_emit_by_name (G_OBJECT (alsa),
+ "device-removed",
+ name);
+}
+
+static void
+remove_stream (AlsaBackend *alsa, const gchar *name)
+{
+ MateMixerStream *stream;
+
+ stream = mate_mixer_backend_get_default_input_stream (MATE_MIXER_BACKEND (alsa));
+
+ // XXX see if the change happens after stream is removed or before
+ if (stream != NULL && strcmp (mate_mixer_stream_get_name (stream), name) == 0)
+ select_default_input_stream (alsa);
+
+ stream = mate_mixer_backend_get_default_output_stream (MATE_MIXER_BACKEND (alsa));
+
+ if (stream != NULL && strcmp (mate_mixer_stream_get_name (stream), name) == 0)
+ select_default_output_stream (alsa);
+}
+
+static void
+select_default_input_stream (AlsaBackend *alsa)
+{
+ AlsaDevice *device;
+ AlsaStream *stream;
+ gchar card[16];
+ gint num;
+
+ /* Always prefer stream in the "default" device */
+ device = g_hash_table_lookup (alsa->priv->devices, "default");
+ if (device != NULL) {
+ stream = alsa_device_get_input_stream (device);
+ if (stream != NULL) {
+ _mate_mixer_backend_set_default_input_stream (MATE_MIXER_BACKEND (alsa),
+ MATE_MIXER_STREAM (stream));
+ return;
+ }
+ }
+
+ /* If there is no input stream in the default device, search the cards in
+ * the correct order */
+ for (num = 0;; num++) {
+ g_snprintf (card, sizeof (card), "hw:%d", num);
+
+ device = g_hash_table_lookup (alsa->priv->devices, card);
+ if (device == NULL)
+ break;
+ stream = alsa_device_get_input_stream (device);
+ if (stream != NULL) {
+ _mate_mixer_backend_set_default_input_stream (MATE_MIXER_BACKEND (alsa),
+ MATE_MIXER_STREAM (stream));
+ return;
+ }
+ }
+
+ /* In the worst case unset the default stream */
+ _mate_mixer_backend_set_default_input_stream (MATE_MIXER_BACKEND (alsa), NULL);
+}
+
+static void
+select_default_output_stream (AlsaBackend *alsa)
+{
+ AlsaDevice *device;
+ AlsaStream *stream;
+ gchar card[16];
+ gint num;
+
+ /* Always prefer stream in the "default" device */
+ device = g_hash_table_lookup (alsa->priv->devices, "default");
+ if (device != NULL) {
+ stream = alsa_device_get_output_stream (device);
+ if (stream != NULL) {
+ _mate_mixer_backend_set_default_output_stream (MATE_MIXER_BACKEND (alsa),
+ MATE_MIXER_STREAM (stream));
+ return;
+ }
+ }
+
+ /* If there is no input stream in the default device, search the cards in
+ * the correct order */
+ for (num = 0;; num++) {
+ g_snprintf (card, sizeof (card), "hw:%d", num);
+
+ device = g_hash_table_lookup (alsa->priv->devices, card);
+ if (device == NULL)
+ break;
+ stream = alsa_device_get_output_stream (device);
+ if (stream != NULL) {
+ _mate_mixer_backend_set_default_output_stream (MATE_MIXER_BACKEND (alsa),
+ MATE_MIXER_STREAM (stream));
+ return;
+ }
+ }
+
+ /* In the worst case unset the default stream */
+ _mate_mixer_backend_set_default_output_stream (MATE_MIXER_BACKEND (alsa), NULL);
+}
diff --git a/backends/alsa/alsa-backend.h b/backends/alsa/alsa-backend.h
new file mode 100644
index 0000000..03fedf0
--- /dev/null
+++ b/backends/alsa/alsa-backend.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_BACKEND_H
+#define ALSA_BACKEND_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#define ALSA_TYPE_BACKEND \
+ (alsa_backend_get_type ())
+#define ALSA_BACKEND(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_BACKEND, AlsaBackend))
+#define ALSA_IS_BACKEND(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_BACKEND))
+#define ALSA_BACKEND_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_BACKEND, AlsaBackendClass))
+#define ALSA_IS_BACKEND_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_BACKEND))
+#define ALSA_BACKEND_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_BACKEND, AlsaBackendClass))
+
+typedef struct _AlsaBackend AlsaBackend;
+typedef struct _AlsaBackendClass AlsaBackendClass;
+typedef struct _AlsaBackendPrivate AlsaBackendPrivate;
+
+struct _AlsaBackend
+{
+ MateMixerBackend parent;
+
+ /*< private >*/
+ AlsaBackendPrivate *priv;
+};
+
+struct _AlsaBackendClass
+{
+ MateMixerBackendClass parent_class;
+};
+
+GType alsa_backend_get_type (void) G_GNUC_CONST;
+
+/* Support function for dynamic loading of the backend module */
+void backend_module_init (GTypeModule *module);
+const MateMixerBackendInfo *backend_module_get_info (void);
+
+#endif /* ALSA_BACKEND_H */
diff --git a/backends/alsa/alsa-constants.c b/backends/alsa/alsa-constants.c
new file mode 100644
index 0000000..2124a2e
--- /dev/null
+++ b/backends/alsa/alsa-constants.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <alsa/asoundlib.h>
+#include <libmatemixer/matemixer.h>
+
+#include "alsa-constants.h"
+
+// XXX add more and probably move them somewhere else
+const AlsaControlInfo alsa_controls[] =
+{
+ { "Master", N_("Master"), MATE_MIXER_STREAM_CONTROL_ROLE_MASTER },
+ { "Speaker", N_("Speaker"), MATE_MIXER_STREAM_CONTROL_ROLE_MASTER },
+ { "Capture", N_("Capture"), MATE_MIXER_STREAM_CONTROL_ROLE_MASTER },
+ { "PCM", N_("PCM"), MATE_MIXER_STREAM_CONTROL_ROLE_PCM },
+ { "Line", N_("Line"), MATE_MIXER_STREAM_CONTROL_ROLE_PORT },
+ { "Mic", N_("Mic"), MATE_MIXER_STREAM_CONTROL_ROLE_PORT },
+ { NULL }
+};
+
+const MateMixerChannelPosition alsa_channel_map_from[SND_MIXER_SCHN_LAST] =
+{
+ [SND_MIXER_SCHN_FRONT_LEFT] = MATE_MIXER_CHANNEL_FRONT_LEFT,
+ [SND_MIXER_SCHN_FRONT_RIGHT] = MATE_MIXER_CHANNEL_FRONT_RIGHT,
+ [SND_MIXER_SCHN_REAR_LEFT] = MATE_MIXER_CHANNEL_BACK_LEFT,
+ [SND_MIXER_SCHN_REAR_RIGHT] = MATE_MIXER_CHANNEL_BACK_RIGHT,
+ [SND_MIXER_SCHN_FRONT_CENTER] = MATE_MIXER_CHANNEL_FRONT_CENTER,
+ [SND_MIXER_SCHN_WOOFER] = MATE_MIXER_CHANNEL_LFE,
+ [SND_MIXER_SCHN_SIDE_LEFT] = MATE_MIXER_CHANNEL_SIDE_LEFT,
+ [SND_MIXER_SCHN_SIDE_RIGHT] = MATE_MIXER_CHANNEL_SIDE_RIGHT,
+ [SND_MIXER_SCHN_REAR_CENTER] = MATE_MIXER_CHANNEL_BACK_CENTER
+};
+
+const snd_mixer_selem_channel_id_t alsa_channel_map_to[MATE_MIXER_CHANNEL_MAX] =
+{
+ [MATE_MIXER_CHANNEL_UNKNOWN] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_MONO] = SND_MIXER_SCHN_MONO,
+ [MATE_MIXER_CHANNEL_FRONT_LEFT] = SND_MIXER_SCHN_FRONT_LEFT,
+ [MATE_MIXER_CHANNEL_FRONT_RIGHT] = SND_MIXER_SCHN_FRONT_RIGHT,
+ [MATE_MIXER_CHANNEL_FRONT_CENTER] = SND_MIXER_SCHN_FRONT_CENTER,
+ [MATE_MIXER_CHANNEL_LFE] = SND_MIXER_SCHN_WOOFER,
+ [MATE_MIXER_CHANNEL_BACK_LEFT] = SND_MIXER_SCHN_REAR_LEFT,
+ [MATE_MIXER_CHANNEL_BACK_RIGHT] = SND_MIXER_SCHN_REAR_RIGHT,
+ [MATE_MIXER_CHANNEL_BACK_CENTER] = SND_MIXER_SCHN_REAR_CENTER,
+ [MATE_MIXER_CHANNEL_FRONT_LEFT_CENTER] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_FRONT_RIGHT_CENTER] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_SIDE_LEFT] = SND_MIXER_SCHN_SIDE_LEFT,
+ [MATE_MIXER_CHANNEL_SIDE_RIGHT] = SND_MIXER_SCHN_SIDE_RIGHT,
+ [MATE_MIXER_CHANNEL_TOP_FRONT_LEFT] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_TOP_FRONT_RIGHT] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_TOP_FRONT_CENTER] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_TOP_CENTER] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_TOP_BACK_LEFT] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_TOP_BACK_RIGHT] = SND_MIXER_SCHN_UNKNOWN,
+ [MATE_MIXER_CHANNEL_TOP_BACK_CENTER] = SND_MIXER_SCHN_UNKNOWN
+};
diff --git a/backends/alsa/alsa-constants.h b/backends/alsa/alsa-constants.h
new file mode 100644
index 0000000..81257c7
--- /dev/null
+++ b/backends/alsa/alsa-constants.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_CONSTANTS_H
+#define ALSA_CONSTANTS_H
+
+#include <glib.h>
+#include <alsa/asoundlib.h>
+#include <libmatemixer/matemixer.h>
+
+typedef struct {
+ gchar *name;
+ gchar *label;
+ MateMixerStreamControlRole role;
+} AlsaControlInfo;
+
+extern const AlsaControlInfo alsa_controls[];
+extern const MateMixerChannelPosition alsa_channel_map_from[];
+extern const snd_mixer_selem_channel_id_t alsa_channel_map_to[];
+
+#endif /* ALSA_CONSTANTS_H */
diff --git a/backends/alsa/alsa-device.c b/backends/alsa/alsa-device.c
new file mode 100644
index 0000000..5acc6f5
--- /dev/null
+++ b/backends/alsa/alsa-device.c
@@ -0,0 +1,941 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <strings.h>
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+#include <libmatemixer/matemixer.h>
+
+#include "alsa-constants.h"
+#include "alsa-device.h"
+#include "alsa-element.h"
+#include "alsa-stream.h"
+#include "alsa-stream-control.h"
+#include "alsa-stream-input-control.h"
+#include "alsa-stream-output-control.h"
+#include "alsa-switch.h"
+#include "alsa-switch-option.h"
+#include "alsa-toggle.h"
+
+#define ALSA_DEVICE_ICON "audio-card"
+
+struct _AlsaDevicePrivate
+{
+ snd_mixer_t *handle;
+ GMainContext *context;
+ GMutex mutex;
+ GCond cond;
+ AlsaStream *input;
+ AlsaStream *output;
+ GHashTable *switches;
+ gboolean events_pending;
+};
+
+enum {
+ CLOSED,
+ N_SIGNALS
+};
+
+static guint signals[N_SIGNALS] = { 0, };
+
+static void alsa_device_class_init (AlsaDeviceClass *klass);
+static void alsa_device_init (AlsaDevice *device);
+static void alsa_device_dispose (GObject *object);
+static void alsa_device_finalize (GObject *object);
+
+G_DEFINE_TYPE (AlsaDevice, alsa_device, MATE_MIXER_TYPE_DEVICE)
+
+static MateMixerSwitch *alsa_device_get_switch (MateMixerDevice *mmd,
+ const gchar *name);
+
+static GList * alsa_device_list_streams (MateMixerDevice *mmd);
+static GList * alsa_device_list_switches (MateMixerDevice *mmd);
+
+static gboolean add_stream_input_control (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+static gboolean add_stream_output_control (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+
+static gboolean add_switch (AlsaDevice *device,
+ AlsaStream *stream,
+ snd_mixer_elem_t *el);
+
+static gboolean add_device_switch (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+
+static gboolean add_stream_input_switch (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+static gboolean add_stream_output_switch (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+
+static gboolean add_stream_input_toggle (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+static gboolean add_stream_output_toggle (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+
+static void load_element (AlsaDevice *device,
+ snd_mixer_elem_t *el);
+
+static void load_elements_by_name (AlsaDevice *device,
+ const gchar *name);
+
+static void remove_elements_by_name (AlsaDevice *device,
+ const gchar *name);
+
+static void handle_poll (AlsaDevice *device);
+
+static gboolean handle_process_events (AlsaDevice *device);
+
+static int handle_callback (snd_mixer_t *handle,
+ guint mask,
+ snd_mixer_elem_t *el);
+static int handle_element_callback (snd_mixer_elem_t *el,
+ guint mask);
+
+static void close_device (AlsaDevice *device);
+
+static gchar * get_element_name (snd_mixer_elem_t *el);
+static void get_control_info (snd_mixer_elem_t *el,
+ gchar **name,
+ gchar **label,
+ MateMixerStreamControlRole *role);
+
+static void get_switch_info (snd_mixer_elem_t *el,
+ gchar **name,
+ gchar **label);
+
+static void
+alsa_device_class_init (AlsaDeviceClass *klass)
+{
+ GObjectClass *object_class;
+ MateMixerDeviceClass *device_class;
+
+ object_class = G_OBJECT_CLASS (klass);
+ object_class->dispose = alsa_device_dispose;
+ object_class->finalize = alsa_device_finalize;
+
+ device_class = MATE_MIXER_DEVICE_CLASS (klass);
+ device_class->get_switch = alsa_device_get_switch;
+ device_class->list_streams = alsa_device_list_streams;
+ device_class->list_switches = alsa_device_list_switches;
+
+ signals[CLOSED] =
+ g_signal_new ("closed",
+ G_TYPE_FROM_CLASS (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (AlsaDeviceClass, closed),
+ NULL,
+ NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0,
+ G_TYPE_NONE);
+
+ g_type_class_add_private (object_class, sizeof (AlsaDevicePrivate));
+}
+
+static void
+alsa_device_init (AlsaDevice *device)
+{
+ device->priv = G_TYPE_INSTANCE_GET_PRIVATE (device,
+ ALSA_TYPE_DEVICE,
+ AlsaDevicePrivate);
+
+ device->priv->switches = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ g_object_unref);
+
+ device->priv->context = g_main_context_ref_thread_default ();
+
+ g_mutex_init (&device->priv->mutex);
+ g_cond_init (&device->priv->cond);
+}
+
+static void
+alsa_device_dispose (GObject *object)
+{
+ AlsaDevice *device;
+
+ device = ALSA_DEVICE (object);
+
+ g_clear_object (&device->priv->input);
+ g_clear_object (&device->priv->output);
+
+ g_hash_table_remove_all (device->priv->switches);
+
+ G_OBJECT_CLASS (alsa_device_parent_class)->dispose (object);
+}
+
+static void
+alsa_device_finalize (GObject *object)
+{
+ AlsaDevice *device;
+
+ device = ALSA_DEVICE (object);
+
+ g_mutex_clear (&device->priv->mutex);
+ g_cond_clear (&device->priv->cond);
+
+ g_hash_table_unref (device->priv->switches);
+ g_main_context_unref (device->priv->context);
+
+ if (device->priv->handle != NULL)
+ snd_mixer_close (device->priv->handle);
+
+ G_OBJECT_CLASS (alsa_device_parent_class)->dispose (object);
+}
+
+AlsaDevice *
+alsa_device_new (const gchar *name, const gchar *label)
+{
+ AlsaDevice *device;
+ gchar *stream_name;
+
+ g_return_val_if_fail (name != NULL, NULL);
+ g_return_val_if_fail (label != NULL, NULL);
+
+ device = g_object_new (ALSA_TYPE_DEVICE,
+ "name", name,
+ "label", label,
+ "icon", ALSA_DEVICE_ICON,
+ NULL);
+
+ /* Create input and output streams, they will exist the whole time, but
+ * the added and removed signals will be emitted when the first control or
+ * switch is added or the last one removed */
+ stream_name = g_strdup_printf ("alsa-input-%s", name);
+ device->priv->input = alsa_stream_new (stream_name,
+ MATE_MIXER_DEVICE (device),
+ MATE_MIXER_STREAM_INPUT);
+ g_free (stream_name);
+
+ stream_name = g_strdup_printf ("alsa-output-%s", name);
+ device->priv->output = alsa_stream_new (stream_name,
+ MATE_MIXER_DEVICE (device),
+ MATE_MIXER_STREAM_OUTPUT);
+ g_free (stream_name);
+
+ return device;
+}
+
+gboolean
+alsa_device_open (AlsaDevice *device)
+{
+ snd_mixer_t *handle;
+ const gchar *name;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_DEVICE (device), FALSE);
+ g_return_val_if_fail (device->priv->handle == NULL, FALSE);
+
+ name = mate_mixer_device_get_name (MATE_MIXER_DEVICE (device));
+
+ g_debug ("Opening device %s (%s)",
+ name,
+ mate_mixer_device_get_label (MATE_MIXER_DEVICE (device)));
+
+ /* Open the mixer for the current device */
+ ret = snd_mixer_open (&handle, 0);
+ if (ret < 0) {
+ g_warning ("Failed to open mixer: %s", snd_strerror (ret));
+ return FALSE;
+ }
+ ret = snd_mixer_attach (handle, name);
+ if (ret < 0) {
+ g_warning ("Failed to attach mixer to %s: %s",
+ name,
+ snd_strerror (ret));
+
+ snd_mixer_close (handle);
+ return FALSE;
+ }
+ ret = snd_mixer_selem_register (handle, NULL, NULL);
+ if (ret < 0) {
+ g_warning ("Failed to register simple element for %s: %s",
+ name,
+ snd_strerror (ret));
+
+ snd_mixer_close (handle);
+ return FALSE;
+ }
+ ret = snd_mixer_load (handle);
+ if (ret < 0) {
+ g_warning ("Failed to load mixer elements for %s: %s",
+ name,
+ snd_strerror (ret));
+
+ snd_mixer_close (handle);
+ return FALSE;
+ }
+
+ device->priv->handle = handle;
+ return TRUE;
+}
+
+void
+alsa_device_load (AlsaDevice *device)
+{
+ GThread *thread;
+ GError *error = NULL;
+ snd_mixer_elem_t *el;
+
+ g_return_if_fail (ALSA_IS_DEVICE (device));
+ g_return_if_fail (device->priv->handle != NULL);
+
+ /* Process the mixer elements */
+ el = snd_mixer_first_elem (device->priv->handle);
+ while (el != NULL) {
+ load_element (device, el);
+
+ el = snd_mixer_elem_next (el);
+ }
+
+ /* Set callback for ALSA events */
+ snd_mixer_set_callback (device->priv->handle, handle_callback);
+ snd_mixer_set_callback_private (device->priv->handle, device);
+
+ /* Start the polling thread */
+ thread = g_thread_try_new ("matemixer-alsa-poll",
+ (GThreadFunc) handle_poll,
+ device,
+ &error);
+ if (thread == NULL) {
+ /* The error is not treated as fatal, because without the polling
+ * thread we still have most of the functionality */
+ g_warning ("Failed to create poll thread: %s", error->message);
+ g_error_free (error);
+ } else
+ g_thread_unref (thread);
+}
+
+AlsaStream *
+alsa_device_get_input_stream (AlsaDevice *device)
+{
+ g_return_val_if_fail (ALSA_IS_DEVICE (device), NULL);
+
+ /* Normally controlless streams should not exist, here we simulate the
+ * behaviour for the owning instance */
+ if (alsa_stream_is_empty (device->priv->input) == FALSE)
+ return device->priv->input;
+
+ return NULL;
+}
+
+AlsaStream *
+alsa_device_get_output_stream (AlsaDevice *device)
+{
+ g_return_val_if_fail (ALSA_IS_DEVICE (device), NULL);
+
+ /* Normally controlless streams should not exist, here we simulate the
+ * behaviour for the owning instance */
+ if (alsa_stream_is_empty (device->priv->output) == FALSE)
+ return device->priv->output;
+
+ return NULL;
+}
+
+static gboolean
+add_element (AlsaDevice *device, AlsaStream *stream, AlsaElement *element)
+{
+ gboolean added = FALSE;
+
+ if (alsa_element_load (element) == FALSE)
+ return FALSE;
+
+ if (stream != NULL) {
+ gboolean empty = FALSE;
+
+ if (alsa_stream_is_empty (stream) == TRUE) {
+ const gchar *name =
+ mate_mixer_stream_get_name (MATE_MIXER_STREAM (stream));
+
+ /* Pretend the stream has just been created now that we are adding
+ * the first control */
+ g_signal_emit_by_name (G_OBJECT (device),
+ "stream-added",
+ name);
+ empty = TRUE;
+ }
+
+ if (ALSA_IS_STREAM_CONTROL (element)) {
+ alsa_stream_add_control (stream, ALSA_STREAM_CONTROL (element));
+
+ /* If this is the first control, set it as the default one.
+ * The controls often seem to come in the order of importance, but this is
+ * driver specific, so we may later see if there is another control which
+ * better matches the default. */
+ if (empty == TRUE)
+ alsa_stream_set_default_control (stream, ALSA_STREAM_CONTROL (element));
+
+ added = TRUE;
+ } else if (ALSA_IS_SWITCH (element)) {
+ /* Switch belonging to a stream */
+ alsa_stream_add_switch (stream, ALSA_SWITCH (element));
+ added = TRUE;
+ }
+ } else if (ALSA_IS_SWITCH (element)) {
+ /* Switch belonging to the device */
+ const gchar *name =
+ mate_mixer_switch_get_name (MATE_MIXER_SWITCH (element));
+
+ g_hash_table_insert (device->priv->switches,
+ g_strdup (name),
+ g_object_ref (element));
+
+ g_signal_emit_by_name (G_OBJECT (device),
+ "switch-added",
+ name);
+ added = TRUE;
+ }
+
+ if G_LIKELY (added == TRUE) {
+ snd_mixer_elem_t *el = alsa_element_get_snd_element (element);
+
+ snd_mixer_elem_set_callback (el, handle_element_callback);
+ snd_mixer_elem_set_callback_private (el, device);
+ }
+ return added;
+}
+
+static MateMixerSwitch *
+alsa_device_get_switch (MateMixerDevice *mmd, const gchar *name)
+{
+ g_return_val_if_fail (ALSA_IS_DEVICE (mmd), NULL);
+ g_return_val_if_fail (name != NULL, NULL);
+
+ return g_hash_table_lookup (ALSA_DEVICE (mmd)->priv->switches, name);
+}
+
+static GList *
+alsa_device_list_streams (MateMixerDevice *mmd)
+{
+ AlsaDevice *device;
+ GList *list = NULL;
+
+ g_return_val_if_fail (ALSA_IS_DEVICE (mmd), NULL);
+
+ device = ALSA_DEVICE (mmd);
+
+ if (device->priv->output != NULL)
+ list = g_list_prepend (list, g_object_ref (device->priv->output));
+ if (device->priv->input != NULL)
+ list = g_list_prepend (list, g_object_ref (device->priv->input));
+
+ return list;
+}
+
+static GList *
+alsa_device_list_switches (MateMixerDevice *mmd)
+{
+ GList *list;
+
+ g_return_val_if_fail (ALSA_IS_DEVICE (mmd), NULL);
+
+ /* Convert the hash table to a linked list, this list is expected to be
+ * cached in the main library */
+ list = g_hash_table_get_values (ALSA_DEVICE (mmd)->priv->switches);
+ if (list != NULL)
+ g_list_foreach (list, (GFunc) g_object_ref, NULL);
+
+ return list;
+}
+
+static gboolean
+add_stream_input_control (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ AlsaStreamControl *control;
+ gchar *name;
+ gchar *label;
+ MateMixerStreamControlRole role;
+
+ get_control_info (el, &name, &label, &role);
+
+ g_debug ("Found device %s input control %s",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)),
+ label);
+
+ control = alsa_stream_input_control_new (name, label, role);
+ g_free (name);
+ g_free (label);
+
+ alsa_element_set_snd_element (ALSA_ELEMENT (control), el);
+
+ if (add_element (device, device->priv->input, ALSA_ELEMENT (control)) == FALSE) {
+ g_object_unref (control);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+add_stream_output_control (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ AlsaStreamControl *control;
+ gchar *label;
+ gchar *name;
+ MateMixerStreamControlRole role;
+
+ get_control_info (el, &name, &label, &role);
+
+ g_debug ("Found device %s output control %s",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)),
+ label);
+
+ control = alsa_stream_output_control_new (name, label, role);
+ g_free (name);
+ g_free (label);
+
+ alsa_element_set_snd_element (ALSA_ELEMENT (control), el);
+
+ if (add_element (device, device->priv->output, ALSA_ELEMENT (control)) == FALSE) {
+ g_object_unref (control);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static AlsaToggle *
+create_toggle (AlsaDevice *device, snd_mixer_elem_t *el, AlsaToggleType type)
+{
+ AlsaToggle *toggle;
+ AlsaSwitchOption *on;
+ AlsaSwitchOption *off;
+ gchar *name;
+ gchar *label;
+
+ on = alsa_switch_option_new ("On", _("On"), NULL, 1);
+ off = alsa_switch_option_new ("Off", _("Off"), NULL, 0);
+
+ get_switch_info (el, &name, &label);
+ toggle = alsa_toggle_new (name,
+ label,
+ type,
+ on, off);
+ g_free (name);
+ g_free (label);
+
+ alsa_element_set_snd_element (ALSA_ELEMENT (toggle), el);
+
+ g_object_unref (on);
+ g_object_unref (off);
+
+ return toggle;
+}
+
+static gboolean
+add_switch (AlsaDevice *device, AlsaStream *stream, snd_mixer_elem_t *el)
+{
+ AlsaElement *element = NULL;
+ GList *options = NULL;
+ gchar *name;
+ gchar *label;
+ gchar item[128];
+ guint i;
+ gint count;
+ gint ret;
+
+ count = snd_mixer_selem_get_enum_items (el);
+ if G_UNLIKELY (count <= 0) {
+ g_debug ("Skipping mixer switch %s with %d items",
+ snd_mixer_selem_get_name (el),
+ count);
+ return FALSE;
+ }
+
+ for (i = 0; i < count; i++) {
+ ret = snd_mixer_selem_get_enum_item_name (el, i,
+ sizeof (item),
+ item);
+ if G_LIKELY (ret == 0)
+ options = g_list_prepend (options,
+ alsa_switch_option_new (item, item, NULL, i));
+ else
+ g_warning ("Failed to read switch item name: %s", snd_strerror (ret));
+ }
+
+ get_switch_info (el, &name, &label);
+
+ /* Takes ownership of options */
+ element = ALSA_ELEMENT (alsa_switch_new (name, label, g_list_reverse (options)));
+ g_free (name);
+ g_free (label);
+
+ alsa_element_set_snd_element (element, el);
+
+ if (add_element (device, stream, element) == FALSE) {
+ g_object_unref (element);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+add_device_switch (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ g_debug ("Reading device %s switch %s (%d items)",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)),
+ snd_mixer_selem_get_name (el),
+ snd_mixer_selem_get_enum_items (el));
+
+ return add_switch (device, NULL, el);
+}
+
+static gboolean
+add_stream_input_switch (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ g_debug ("Reading device %s input switch %s (%d items)",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)),
+ snd_mixer_selem_get_name (el),
+ snd_mixer_selem_get_enum_items (el));
+
+ return add_switch (device, device->priv->input, el);
+}
+
+static gboolean
+add_stream_output_switch (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ g_debug ("Reading device %s output switch %s (%d items)",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)),
+ snd_mixer_selem_get_name (el),
+ snd_mixer_selem_get_enum_items (el));
+
+ return add_switch (device, device->priv->output, el);
+}
+
+static gboolean
+add_stream_input_toggle (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ AlsaToggle *toggle;
+
+ g_debug ("Reading device %s input toggle %s",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)),
+ snd_mixer_selem_get_name (el));
+
+ toggle = create_toggle (device, el, ALSA_TOGGLE_CAPTURE);
+
+ if (add_element (device, device->priv->input, ALSA_ELEMENT (toggle)) == FALSE) {
+ g_object_unref (toggle);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+add_stream_output_toggle (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ AlsaToggle *toggle;
+
+ g_debug ("Reading device %s output toggle %s",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)),
+ snd_mixer_selem_get_name (el));
+
+ toggle = create_toggle (device, el, ALSA_TOGGLE_PLAYBACK);
+
+ if (add_element (device, device->priv->output, ALSA_ELEMENT (toggle)) == FALSE) {
+ g_object_unref (toggle);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static void
+load_element (AlsaDevice *device, snd_mixer_elem_t *el)
+{
+ gboolean cvolume = FALSE;
+ gboolean pvolume = FALSE;
+
+ if (snd_mixer_selem_is_enumerated (el) == 1) {
+ gboolean cenum = FALSE;
+ gboolean penum = FALSE;
+
+ if (snd_mixer_selem_is_enum_capture (el) == 1)
+ cenum = TRUE;
+ if (snd_mixer_selem_is_enum_playback (el) == 1)
+ penum = TRUE;
+
+ /* Enumerated controls which are not marked as capture or playback
+ * are considered to be a part of the whole device, although sometimes
+ * this is incorrectly reported by the driver */
+ if (cenum == FALSE && penum == FALSE) {
+ add_device_switch (device, el);
+ }
+ else if (cenum == TRUE)
+ add_stream_input_switch (device, el);
+ else if (penum == TRUE)
+ add_stream_output_switch (device, el);
+ }
+
+ if (snd_mixer_selem_has_capture_volume (el) == 1 ||
+ snd_mixer_selem_has_common_volume (el) == 1)
+ cvolume = TRUE;
+ if (snd_mixer_selem_has_playback_volume (el) == 1 ||
+ snd_mixer_selem_has_common_volume (el) == 1)
+ pvolume = TRUE;
+
+ if (cvolume == FALSE && pvolume == FALSE) {
+ /* Control without volume and with a switch are modelled as toggles */
+ if (snd_mixer_selem_has_capture_switch (el) == 1)
+ add_stream_input_toggle (device, el);
+
+ if (snd_mixer_selem_has_playback_switch (el) == 1)
+ add_stream_output_toggle (device, el);
+ } else {
+ if (cvolume == TRUE)
+ add_stream_input_control (device, el);
+ if (pvolume == TRUE)
+ add_stream_output_control (device, el);
+ }
+}
+
+static void
+load_elements_by_name (AlsaDevice *device, const gchar *name)
+{
+ AlsaElement *element;
+
+ alsa_stream_load_elements (device->priv->input, name);
+ alsa_stream_load_elements (device->priv->output, name);
+
+ element = g_hash_table_lookup (device->priv->switches, name);
+ if (element != NULL)
+ alsa_element_load (element);
+}
+
+static void
+remove_elements_by_name (AlsaDevice *device, const gchar *name)
+{
+ if (alsa_stream_remove_elements (device->priv->input, name) == TRUE) {
+ /* Removing last stream element "removes" the stream */
+ if (alsa_stream_is_empty (device->priv->input) == TRUE) {
+ const gchar *stream_name =
+ mate_mixer_stream_get_name (MATE_MIXER_STREAM (device->priv->input));
+
+ g_signal_emit_by_name (G_OBJECT (device),
+ "stream-removed",
+ stream_name);
+ }
+ }
+
+ if (alsa_stream_remove_elements (device->priv->output, name) == TRUE) {
+ /* Removing last stream element "removes" the stream */
+ if (alsa_stream_is_empty (device->priv->output) == TRUE) {
+ const gchar *stream_name =
+ mate_mixer_stream_get_name (MATE_MIXER_STREAM (device->priv->output));
+
+ g_signal_emit_by_name (G_OBJECT (device),
+ "stream-removed",
+ stream_name);
+ }
+ }
+
+ if (g_hash_table_remove (device->priv->switches, name) == TRUE)
+ g_signal_emit_by_name (G_OBJECT (device),
+ "switch-removed",
+ name);
+}
+
+static void
+handle_poll (AlsaDevice *device)
+{
+ /* This function is called in a worker thread. It is supposed to wait for
+ * ALSA events and call handle_process_events(). Processing the events might
+ * result in emitting the CLOSED signal and unreffing the instance in the
+ * owner, so keep an extra reference during the lifetime of the thread. */
+ g_object_ref (device);
+
+ while (TRUE) {
+ gint ret = snd_mixer_wait (device->priv->handle, -1);
+ if (ret < 0) {
+ if (ret == EINTR)
+ continue;
+ break;
+ }
+
+ device->priv->events_pending = TRUE;
+
+ /* Process the events in the main thread because most events end up
+ * emitting signals */
+ g_main_context_invoke (device->priv->context,
+ (GSourceFunc) handle_process_events,
+ device);
+
+ g_mutex_lock (&device->priv->mutex);
+
+ /* Use a GCond to wait until the events are processed. The processing
+ * function may be called any time later in the main loop and snd_mixer_wait()
+ * returns instantly while there are pending events. Without the wait,
+ * g_main_context_invoke() could be called repeatedly to create idle sources
+ * until the first idle source function is called. */
+ while (device->priv->events_pending == TRUE)
+ g_cond_wait (&device->priv->cond, &device->priv->mutex);
+
+ g_mutex_unlock (&device->priv->mutex);
+
+ /* Exit the thread if the processing function closed the device */
+ if (device->priv->handle == NULL)
+ break;
+ }
+
+ g_debug ("Terminating poll thread for device %s",
+ mate_mixer_device_get_name (MATE_MIXER_DEVICE (device)));
+
+ g_object_unref (device);
+}
+
+static gboolean
+handle_process_events (AlsaDevice *device)
+{
+ g_mutex_lock (&device->priv->mutex);
+
+ if (device->priv->handle != NULL) {
+ gint ret = snd_mixer_handle_events (device->priv->handle);
+ if (ret < 0)
+ close_device (device);
+ }
+
+ device->priv->events_pending = FALSE;
+
+ g_cond_signal (&device->priv->cond);
+ g_mutex_unlock (&device->priv->mutex);
+
+ return G_SOURCE_REMOVE;
+}
+
+/* ALSA has a per-mixer callback and per-element callback, per-mixer callback
+ * is only used for added elements and per-element callback for all the
+ * other messages (no, the documentation doesn't say anything about that). */
+static int
+handle_callback (snd_mixer_t *handle, guint mask, snd_mixer_elem_t *el)
+{
+ if (mask & SND_CTL_EVENT_MASK_ADD) {
+ AlsaDevice *device = snd_mixer_get_callback_private (handle);
+
+ load_element (device, el);
+ }
+ return 0;
+}
+
+static int
+handle_element_callback (snd_mixer_elem_t *el, guint mask)
+{
+ AlsaDevice *device;
+ gchar *name;
+
+ device = snd_mixer_elem_get_callback_private (el);
+ name = get_element_name (el);
+
+ if (mask == SND_CTL_EVENT_MASK_REMOVE) {
+ /* Make sure this function is not called again with the element */
+ snd_mixer_elem_set_callback_private (el, NULL);
+ snd_mixer_elem_set_callback (el, NULL);
+
+ remove_elements_by_name (device, name);
+ } else {
+ if (mask & SND_CTL_EVENT_MASK_INFO) {
+ remove_elements_by_name (device, name);
+ load_element (device, el);
+ }
+ if (mask & SND_CTL_EVENT_MASK_VALUE)
+ load_elements_by_name (device, name);
+ }
+ g_free (name);
+
+ return 0;
+}
+
+static void
+close_device (AlsaDevice *device)
+{
+ if (device->priv->handle != NULL) {
+ snd_mixer_close (device->priv->handle);
+ device->priv->handle = NULL;
+ }
+
+ /* This signal tells the owner that the device has been closed voluntarily
+ * from within the instance */
+ g_signal_emit (G_OBJECT (device), signals[CLOSED], 0);
+}
+
+static gchar *
+get_element_name (snd_mixer_elem_t *el)
+{
+ return g_strdup_printf ("%s-%d",
+ snd_mixer_selem_get_name (el),
+ snd_mixer_selem_get_index (el));
+}
+
+static void
+get_control_info (snd_mixer_elem_t *el,
+ gchar **name,
+ gchar **label,
+ MateMixerStreamControlRole *role)
+{
+ MateMixerStreamControlRole r = MATE_MIXER_STREAM_CONTROL_ROLE_UNKNOWN;
+ const gchar *n;
+ const gchar *l = NULL;
+ gint i;
+
+ n = snd_mixer_selem_get_name (el);
+
+ for (i = 0; alsa_controls[i].name != NULL; i++)
+ if (strcmp (n, alsa_controls[i].name) == 0) {
+ l = alsa_controls[i].label;
+ r = alsa_controls[i].role;
+ break;
+ }
+
+ *name = get_element_name (el);
+ if (l != NULL)
+ *label = g_strdup (l);
+ else
+ *label = g_strdup (n);
+
+ *role = r;
+}
+
+static void
+get_switch_info (snd_mixer_elem_t *el,
+ gchar **name,
+ gchar **label)
+{
+ // MateMixerStreamControlRole r = MATE_MIXER_STREAM_CONTROL_ROLE_UNKNOWN;
+ const gchar *n;
+ const gchar *l = NULL;
+ // gint i;
+
+ n = snd_mixer_selem_get_name (el);
+
+ // TODO provide translated label and flags
+
+/*
+ for (i = 0; alsa_controls[i].name != NULL; i++)
+ if (strcmp (n, alsa_controls[i].name) == 0) {
+ l = alsa_controls[i].label;
+ r = alsa_controls[i].role;
+ break;
+ }
+*/
+ *name = get_element_name (el);
+ if (l != NULL)
+ *label = g_strdup (l);
+ else
+ *label = g_strdup (n);
+
+ // *role = r;
+}
diff --git a/backends/alsa/alsa-device.h b/backends/alsa/alsa-device.h
new file mode 100644
index 0000000..3b3c970
--- /dev/null
+++ b/backends/alsa/alsa-device.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_DEVICE_H
+#define ALSA_DEVICE_H
+
+#include <glib.h>
+#include <glib-object.h>
+
+#include "alsa-stream.h"
+
+G_BEGIN_DECLS
+
+#define ALSA_TYPE_DEVICE \
+ (alsa_device_get_type ())
+#define ALSA_DEVICE(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_DEVICE, AlsaDevice))
+#define ALSA_IS_DEVICE(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_DEVICE))
+#define ALSA_DEVICE_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_DEVICE, AlsaDeviceClass))
+#define ALSA_IS_DEVICE_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_DEVICE))
+#define ALSA_DEVICE_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_DEVICE, AlsaDeviceClass))
+
+typedef struct _AlsaDevice AlsaDevice;
+typedef struct _AlsaDeviceClass AlsaDeviceClass;
+typedef struct _AlsaDevicePrivate AlsaDevicePrivate;
+
+struct _AlsaDevice
+{
+ MateMixerDevice parent;
+
+ /*< private >*/
+ AlsaDevicePrivate *priv;
+};
+
+struct _AlsaDeviceClass
+{
+ MateMixerDeviceClass parent_class;
+
+ /*< private >*/
+ void (*closed) (AlsaDevice *device);
+};
+
+GType alsa_device_get_type (void) G_GNUC_CONST;
+
+AlsaDevice *alsa_device_new (const gchar *name,
+ const gchar *label);
+
+gboolean alsa_device_open (AlsaDevice *device);
+void alsa_device_load (AlsaDevice *device);
+
+AlsaStream *alsa_device_get_input_stream (AlsaDevice *device);
+AlsaStream *alsa_device_get_output_stream (AlsaDevice *device);
+
+G_END_DECLS
+
+#endif /* ALSA_DEVICE_H */
diff --git a/backends/alsa/alsa-element.c b/backends/alsa/alsa-element.c
new file mode 100644
index 0000000..f925064
--- /dev/null
+++ b/backends/alsa/alsa-element.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+#include "alsa-element.h"
+
+G_DEFINE_INTERFACE (AlsaElement, alsa_element, G_TYPE_OBJECT)
+
+static void
+alsa_element_default_init (AlsaElementInterface *iface)
+{
+}
+
+snd_mixer_elem_t *
+alsa_element_get_snd_element (AlsaElement *element)
+{
+ g_return_val_if_fail (ALSA_IS_ELEMENT (element), NULL);
+
+ return ALSA_ELEMENT_GET_INTERFACE (element)->get_snd_element (element);
+}
+
+void
+alsa_element_set_snd_element (AlsaElement *element, snd_mixer_elem_t *el)
+{
+ g_return_if_fail (ALSA_IS_ELEMENT (element));
+
+ ALSA_ELEMENT_GET_INTERFACE (element)->set_snd_element (element, el);
+}
+
+gboolean
+alsa_element_load (AlsaElement *element)
+{
+ g_return_val_if_fail (ALSA_IS_ELEMENT (element), FALSE);
+
+ return ALSA_ELEMENT_GET_INTERFACE (element)->load (element);
+}
diff --git a/backends/alsa/alsa-element.h b/backends/alsa/alsa-element.h
new file mode 100644
index 0000000..01d30f1
--- /dev/null
+++ b/backends/alsa/alsa-element.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_ELEMENT_H
+#define ALSA_ELEMENT_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+G_BEGIN_DECLS
+
+#define ALSA_TYPE_ELEMENT \
+ (alsa_element_get_type ())
+#define ALSA_ELEMENT(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_ELEMENT, AlsaElement))
+#define ALSA_IS_ELEMENT(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_ELEMENT))
+#define ALSA_ELEMENT_GET_INTERFACE(o) \
+ (G_TYPE_INSTANCE_GET_INTERFACE ((o), ALSA_TYPE_ELEMENT, AlsaElementInterface))
+
+typedef struct _AlsaElement AlsaElement; /* dummy object */
+typedef struct _AlsaElementInterface AlsaElementInterface;
+
+struct _AlsaElementInterface
+{
+ GTypeInterface parent_iface;
+
+ /*< private >*/
+ snd_mixer_elem_t *(*get_snd_element) (AlsaElement *element);
+ void (*set_snd_element) (AlsaElement *element,
+ snd_mixer_elem_t *el);
+
+ gboolean (*load) (AlsaElement *element);
+};
+
+GType alsa_element_get_type (void) G_GNUC_CONST;
+
+snd_mixer_elem_t *alsa_element_get_snd_element (AlsaElement *element);
+void alsa_element_set_snd_element (AlsaElement *element,
+ snd_mixer_elem_t *el);
+
+gboolean alsa_element_load (AlsaElement *element);
+
+G_END_DECLS
+
+#endif /* ALSA_ELEMENT_H */
diff --git a/backends/alsa/alsa-stream-control.c b/backends/alsa/alsa-stream-control.c
new file mode 100644
index 0000000..bc7a937
--- /dev/null
+++ b/backends/alsa/alsa-stream-control.c
@@ -0,0 +1,739 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "alsa-constants.h"
+#include "alsa-element.h"
+#include "alsa-stream-control.h"
+
+struct _AlsaStreamControlPrivate
+{
+ AlsaControlData data;
+ guint32 channel_mask;
+ snd_mixer_elem_t *element;
+};
+
+static void alsa_element_interface_init (AlsaElementInterface *iface);
+
+static void alsa_stream_control_class_init (AlsaStreamControlClass *klass);
+static void alsa_stream_control_init (AlsaStreamControl *control);
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (AlsaStreamControl, alsa_stream_control,
+ MATE_MIXER_TYPE_STREAM_CONTROL,
+ G_IMPLEMENT_INTERFACE (ALSA_TYPE_ELEMENT,
+ alsa_element_interface_init))
+
+static snd_mixer_elem_t * alsa_stream_control_get_snd_element (AlsaElement *element);
+static void alsa_stream_control_set_snd_element (AlsaElement *element,
+ snd_mixer_elem_t *el);
+
+static gboolean alsa_stream_control_load (AlsaElement *element);
+
+static gboolean alsa_stream_control_set_mute (MateMixerStreamControl *mmsc,
+ gboolean mute);
+
+static guint alsa_stream_control_get_num_channels (MateMixerStreamControl *mmsc);
+
+static guint alsa_stream_control_get_volume (MateMixerStreamControl *mmsc);
+
+static gboolean alsa_stream_control_set_volume (MateMixerStreamControl *mmsc,
+ guint volume);
+
+static gdouble alsa_stream_control_get_decibel (MateMixerStreamControl *mmsc);
+
+static gboolean alsa_stream_control_set_decibel (MateMixerStreamControl *mmsc,
+ gdouble decibel);
+
+static gboolean alsa_stream_control_has_channel_position (MateMixerStreamControl *mmsc,
+ MateMixerChannelPosition position);
+static MateMixerChannelPosition alsa_stream_control_get_channel_position (MateMixerStreamControl *mmsc,
+ guint channel);
+
+static guint alsa_stream_control_get_channel_volume (MateMixerStreamControl *mmsc,
+ guint channel);
+static gboolean alsa_stream_control_set_channel_volume (MateMixerStreamControl *mmsc,
+ guint channel,
+ guint volume);
+
+static gdouble alsa_stream_control_get_channel_decibel (MateMixerStreamControl *mmsc,
+ guint channel);
+static gboolean alsa_stream_control_set_channel_decibel (MateMixerStreamControl *mmsc,
+ guint channel,
+ gdouble decibel);
+
+static gboolean alsa_stream_control_set_balance (MateMixerStreamControl *mmsc,
+ gfloat balance);
+
+static gboolean alsa_stream_control_set_fade (MateMixerStreamControl *mmsc,
+ gfloat fade);
+
+static guint alsa_stream_control_get_min_volume (MateMixerStreamControl *mmsc);
+static guint alsa_stream_control_get_max_volume (MateMixerStreamControl *mmsc);
+static guint alsa_stream_control_get_normal_volume (MateMixerStreamControl *mmsc);
+static guint alsa_stream_control_get_base_volume (MateMixerStreamControl *mmsc);
+
+static void control_data_get_average_left_right (AlsaControlData *data,
+ guint *left,
+ guint *right);
+static void control_data_get_average_front_back (AlsaControlData *data,
+ guint *front,
+ guint *back);
+
+static gfloat control_data_get_balance (AlsaControlData *data);
+static gfloat control_data_get_fade (AlsaControlData *data);
+
+static void
+alsa_element_interface_init (AlsaElementInterface *iface)
+{
+ iface->get_snd_element = alsa_stream_control_get_snd_element;
+ iface->set_snd_element = alsa_stream_control_set_snd_element;
+ iface->load = alsa_stream_control_load;
+}
+
+static void
+alsa_stream_control_class_init (AlsaStreamControlClass *klass)
+{
+ MateMixerStreamControlClass *control_class;
+
+ control_class = MATE_MIXER_STREAM_CONTROL_CLASS (klass);
+
+ control_class->set_mute = alsa_stream_control_set_mute;
+ control_class->get_num_channels = alsa_stream_control_get_num_channels;
+ control_class->get_volume = alsa_stream_control_get_volume;
+ control_class->set_volume = alsa_stream_control_set_volume;
+ control_class->get_decibel = alsa_stream_control_get_decibel;
+ control_class->set_decibel = alsa_stream_control_set_decibel;
+ control_class->has_channel_position = alsa_stream_control_has_channel_position;
+ control_class->get_channel_position = alsa_stream_control_get_channel_position;
+ control_class->get_channel_volume = alsa_stream_control_get_channel_volume;
+ control_class->set_channel_volume = alsa_stream_control_set_channel_volume;
+ control_class->get_channel_decibel = alsa_stream_control_get_channel_decibel;
+ control_class->set_channel_decibel = alsa_stream_control_set_channel_decibel;
+ control_class->set_balance = alsa_stream_control_set_balance;
+ control_class->set_fade = alsa_stream_control_set_fade;
+ control_class->get_min_volume = alsa_stream_control_get_min_volume;
+ control_class->get_max_volume = alsa_stream_control_get_max_volume;
+ control_class->get_normal_volume = alsa_stream_control_get_normal_volume;
+ control_class->get_base_volume = alsa_stream_control_get_base_volume;
+
+ g_type_class_add_private (G_OBJECT_CLASS (klass), sizeof (AlsaStreamControlPrivate));
+}
+
+static void
+alsa_stream_control_init (AlsaStreamControl *control)
+{
+ control->priv = G_TYPE_INSTANCE_GET_PRIVATE (control,
+ ALSA_TYPE_STREAM_CONTROL,
+ AlsaStreamControlPrivate);
+}
+
+AlsaControlData *
+alsa_stream_control_get_data (AlsaStreamControl *control)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), NULL);
+
+ return &control->priv->data;
+}
+
+void
+alsa_stream_control_set_data (AlsaStreamControl *control, AlsaControlData *data)
+{
+ MateMixerStreamControlFlags flags = MATE_MIXER_STREAM_CONTROL_NO_FLAGS;
+ MateMixerStreamControl *mmsc;
+
+ g_return_if_fail (ALSA_IS_STREAM_CONTROL (control));
+ g_return_if_fail (data != NULL);
+
+ mmsc = MATE_MIXER_STREAM_CONTROL (control);
+
+ g_object_freeze_notify (G_OBJECT (control));
+
+ if (data->channels > 0) {
+ if (data->switch_usable == TRUE) {
+ flags |= MATE_MIXER_STREAM_CONTROL_HAS_MUTE;
+ if (data->active == TRUE)
+ flags |= MATE_MIXER_STREAM_CONTROL_CAN_SET_MUTE;
+ }
+ flags |= MATE_MIXER_STREAM_CONTROL_HAS_VOLUME;
+ if (data->active == TRUE)
+ flags |= MATE_MIXER_STREAM_CONTROL_CAN_SET_VOLUME;
+ }
+ if (data->max_decibel > -MATE_MIXER_INFINITY)
+ flags |= MATE_MIXER_STREAM_CONTROL_HAS_DECIBEL;
+
+ control->priv->data = *data;
+ control->priv->channel_mask = _mate_mixer_create_channel_mask (data->c, data->channels);
+
+ if (data->volume_joined == FALSE) {
+ if (MATE_MIXER_CHANNEL_MASK_HAS_LEFT (control->priv->channel_mask) &&
+ MATE_MIXER_CHANNEL_MASK_HAS_RIGHT (control->priv->channel_mask))
+ flags |= MATE_MIXER_STREAM_CONTROL_CAN_BALANCE;
+
+ if (MATE_MIXER_CHANNEL_MASK_HAS_FRONT (control->priv->channel_mask) &&
+ MATE_MIXER_CHANNEL_MASK_HAS_BACK (control->priv->channel_mask))
+ flags |= MATE_MIXER_STREAM_CONTROL_CAN_FADE;
+ }
+
+ _mate_mixer_stream_control_set_flags (mmsc, flags);
+
+ if (data->switch_usable == TRUE) {
+ gboolean mute;
+
+ /* If the mute switch is joined, all the channels get the same value,
+ * otherwise the element has per-channel mute, which we don't support.
+ * In that case, treat the control as unmuted if any channel is
+ * unmuted. */
+ if (data->channels == 1 || data->switch_joined == TRUE) {
+ mute = data->m[0];
+ } else {
+ gint i;
+ mute = TRUE;
+ for (i = 0; i < data->channels; i++)
+ if (data->m[i] == FALSE) {
+ mute = FALSE;
+ break;
+ }
+ }
+ _mate_mixer_stream_control_set_mute (mmsc, mute);
+ } else
+ _mate_mixer_stream_control_set_mute (mmsc, FALSE);
+
+ if (flags & MATE_MIXER_STREAM_CONTROL_CAN_BALANCE)
+ _mate_mixer_stream_control_set_balance (mmsc, control_data_get_balance (data));
+ if (flags & MATE_MIXER_STREAM_CONTROL_CAN_FADE)
+ _mate_mixer_stream_control_set_fade (mmsc, control_data_get_fade (data));
+
+ g_object_thaw_notify (G_OBJECT (control));
+}
+
+static snd_mixer_elem_t *
+alsa_stream_control_get_snd_element (AlsaElement *element)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (element), NULL);
+
+ return ALSA_STREAM_CONTROL (element)->priv->element;
+}
+
+static void
+alsa_stream_control_set_snd_element (AlsaElement *element, snd_mixer_elem_t *el)
+{
+ g_return_if_fail (ALSA_IS_STREAM_CONTROL (element));
+ g_return_if_fail (el != NULL);
+
+ ALSA_STREAM_CONTROL (element)->priv->element = el;
+}
+
+static gboolean
+alsa_stream_control_load (AlsaElement *element)
+{
+ AlsaStreamControl *control;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (element), FALSE);
+
+ control = ALSA_STREAM_CONTROL (element);
+
+ return ALSA_STREAM_CONTROL_GET_CLASS (control)->load (control);
+}
+
+static gboolean
+alsa_stream_control_set_mute (MateMixerStreamControl *mmsc, gboolean mute)
+{
+ AlsaStreamControl *control;
+ gboolean change = FALSE;
+ gint i;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+
+ /* If the switch is joined, only verify the first channel */
+ if (control->priv->data.switch_joined == TRUE) {
+ if (control->priv->data.m[0] != mute)
+ change = TRUE;
+ } else {
+ /* Avoid trying to set the mute if all channels are already at the
+ * selected mute value */
+ for (i = 0; i < control->priv->data.channels; i++)
+ if (control->priv->data.m[i] != mute) {
+ change = TRUE;
+ break;
+ }
+ }
+
+ if (change == TRUE) {
+ AlsaStreamControlClass *klass;
+
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+ if (klass->set_mute (control, mute) == FALSE)
+ return FALSE;
+
+ for (i = 0; i < control->priv->data.channels; i++)
+ control->priv->data.m[i] = mute;
+ }
+ return TRUE;
+}
+
+static guint
+alsa_stream_control_get_num_channels (MateMixerStreamControl *mmsc)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), 0);
+
+ return ALSA_STREAM_CONTROL (mmsc)->priv->data.channels;
+}
+
+static guint
+alsa_stream_control_get_volume (MateMixerStreamControl *mmsc)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), 0);
+
+ return ALSA_STREAM_CONTROL (mmsc)->priv->data.volume;
+}
+
+static gboolean
+alsa_stream_control_set_volume (MateMixerStreamControl *mmsc, guint volume)
+{
+ AlsaStreamControl *control;
+ gboolean change = FALSE;
+ gint i;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+ volume = CLAMP (volume, control->priv->data.min, control->priv->data.max);
+
+ /* If the volume is joined, only verify the first channel */
+ if (control->priv->data.volume_joined == TRUE) {
+ if (control->priv->data.v[0] != volume)
+ change = TRUE;
+ } else {
+ /* Avoid trying to set the volume if all channels are already at the
+ * selected volume */
+ for (i = 0; i < control->priv->data.channels; i++)
+ if (control->priv->data.v[i] != volume) {
+ change = TRUE;
+ break;
+ }
+ }
+
+ if (change == TRUE) {
+ AlsaStreamControlClass *klass;
+
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+ if (klass->set_volume (control, volume) == FALSE)
+ return FALSE;
+
+ for (i = 0; i < control->priv->data.channels; i++)
+ control->priv->data.v[i] = volume;
+
+ g_object_notify (G_OBJECT (control), "volume");
+ }
+ return TRUE;
+}
+
+static gdouble
+alsa_stream_control_get_decibel (MateMixerStreamControl *mmsc)
+{
+ AlsaStreamControl *control;
+ AlsaStreamControlClass *klass;
+ guint volume;
+ gdouble decibel;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), -MATE_MIXER_INFINITY);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+ volume = alsa_stream_control_get_volume (mmsc);
+
+ if (klass->get_decibel_from_volume (control, volume, &decibel) == FALSE)
+ return FALSE;
+
+ return decibel;
+}
+
+static gboolean
+alsa_stream_control_set_decibel (MateMixerStreamControl *mmsc, gdouble decibel)
+{
+ AlsaStreamControl *control;
+ AlsaStreamControlClass *klass;
+ guint volume;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+
+ if (klass->get_volume_from_decibel (control, decibel, &volume) == FALSE)
+ return FALSE;
+
+ return alsa_stream_control_set_volume (mmsc, volume);
+}
+
+static gboolean
+alsa_stream_control_has_channel_position (MateMixerStreamControl *mmsc,
+ MateMixerChannelPosition position)
+{
+ AlsaStreamControl *control;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+
+ if MATE_MIXER_CHANNEL_MASK_HAS_CHANNEL (control->priv->channel_mask, position)
+ return TRUE;
+ else
+ return FALSE;
+}
+
+static MateMixerChannelPosition
+alsa_stream_control_get_channel_position (MateMixerStreamControl *mmsc, guint channel)
+{
+ AlsaStreamControl *control;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), MATE_MIXER_CHANNEL_UNKNOWN);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+
+ if (channel >= control->priv->data.channels)
+ return MATE_MIXER_CHANNEL_UNKNOWN;
+
+ return control->priv->data.c[channel];
+}
+
+static guint
+alsa_stream_control_get_channel_volume (MateMixerStreamControl *mmsc, guint channel)
+{
+ AlsaStreamControl *control;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), 0);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+
+ if (channel >= control->priv->data.channels)
+ return FALSE;
+
+ return control->priv->data.v[channel];
+}
+
+static gboolean
+alsa_stream_control_set_channel_volume (MateMixerStreamControl *mmsc, guint channel, guint volume)
+{
+ AlsaStreamControl *control;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+
+ if (channel >= control->priv->data.channels)
+ return FALSE;
+
+ /* Set volume for all channels at once when channels are joined */
+ if (control->priv->data.volume_joined == TRUE)
+ return alsa_stream_control_set_volume (mmsc, volume);
+
+ if (volume != control->priv->data.v[channel]) {
+ AlsaStreamControlClass *klass;
+
+ /* Convert channel index to ALSA channel position and make sure it is valid */
+ snd_mixer_selem_channel_id_t c = alsa_channel_map_to[control->priv->data.c[channel]];
+ if G_UNLIKELY (c == SND_MIXER_SCHN_UNKNOWN) {
+ g_warn_if_reached ();
+ return FALSE;
+ }
+
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+ if (klass->set_channel_volume (control, c, volume) == FALSE)
+ return FALSE;
+
+ control->priv->data.v[channel] = volume;
+
+ g_object_notify (G_OBJECT (control), "volume");
+ }
+ return TRUE;
+}
+
+static gdouble
+alsa_stream_control_get_channel_decibel (MateMixerStreamControl *mmsc, guint channel)
+{
+ AlsaStreamControl *control;
+ AlsaStreamControlClass *klass;
+ guint volume;
+ gdouble decibel;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), -MATE_MIXER_INFINITY);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+
+ if (channel >= control->priv->data.channels)
+ return FALSE;
+
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+ volume = control->priv->data.v[channel];
+
+ if (klass->get_decibel_from_volume (control, volume, &decibel) == FALSE)
+ return FALSE;
+
+ return decibel;
+}
+
+static gboolean
+alsa_stream_control_set_channel_decibel (MateMixerStreamControl *mmsc,
+ guint channel,
+ gdouble decibel)
+{
+ AlsaStreamControl *control;
+ AlsaStreamControlClass *klass;
+ guint volume;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+
+ if (klass->get_volume_from_decibel (control, decibel, &volume) == FALSE)
+ return FALSE;
+
+ return alsa_stream_control_set_channel_volume (mmsc, channel, volume);
+}
+
+static gboolean
+alsa_stream_control_set_balance (MateMixerStreamControl *mmsc, gfloat balance)
+{
+ AlsaStreamControlClass *klass;
+ AlsaStreamControl *control;
+ AlsaControlData *data;
+ guint left,
+ right;
+ guint nleft,
+ nright;
+ guint max;
+ guint channel;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+
+ data = &control->priv->data;
+ control_data_get_average_left_right (data, &left, &right);
+
+ max = MAX (left, right);
+ if (balance <= 0) {
+ nright = (balance + 1.0f) * max;
+ nleft = max;
+ } else {
+ nleft = (1.0f - balance) * max;
+ nright = max;
+ }
+
+ for (channel = 0; channel < data->channels; channel++) {
+ gboolean lc = MATE_MIXER_IS_LEFT_CHANNEL (data->c[channel]);
+ gboolean rc = MATE_MIXER_IS_RIGHT_CHANNEL (data->c[channel]);
+
+ if (lc == TRUE || rc == TRUE) {
+ guint volume;
+ if (lc == TRUE) {
+ if (left == 0)
+ volume = nleft;
+ else
+ volume = CLAMP (((guint64) data->v[channel] * (guint64) nleft) / (guint64) left,
+ data->min,
+ data->max);
+ } else {
+ if (right == 0)
+ volume = nright;
+ else
+ volume = CLAMP (((guint64) data->v[channel] * (guint64) nright) / (guint64) right,
+ data->min,
+ data->max);
+ }
+
+ if (klass->set_channel_volume (control,
+ alsa_channel_map_to[data->c[channel]],
+ volume) == TRUE)
+ data->v[channel] = volume;
+ }
+ }
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_control_set_fade (MateMixerStreamControl *mmsc, gfloat fade)
+{
+ AlsaStreamControlClass *klass;
+ AlsaStreamControl *control;
+ AlsaControlData *data;
+ guint front,
+ back;
+ guint nfront,
+ nback;
+ guint max;
+ guint channel;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (mmsc), FALSE);
+
+ control = ALSA_STREAM_CONTROL (mmsc);
+ klass = ALSA_STREAM_CONTROL_GET_CLASS (control);
+
+ data = &control->priv->data;
+ control_data_get_average_front_back (data, &front, &back);
+
+ max = MAX (front, back);
+ if (fade <= 0) {
+ nback = (fade + 1.0f) * max;
+ nfront = max;
+ } else {
+ nfront = (1.0f - fade) * max;
+ nback = max;
+ }
+
+ for (channel = 0; channel < data->channels; channel++) {
+ gboolean fc = MATE_MIXER_IS_FRONT_CHANNEL (data->c[channel]);
+ gboolean bc = MATE_MIXER_IS_BACK_CHANNEL (data->c[channel]);
+
+ if (fc == TRUE || bc == TRUE) {
+ guint volume;
+ if (fc == TRUE) {
+ if (front == 0)
+ volume = nfront;
+ else
+ volume = CLAMP (((guint64) data->v[channel] * (guint64) nfront) / (guint64) front,
+ data->min,
+ data->max);
+ } else {
+ if (back == 0)
+ volume = nback;
+ else
+ volume = CLAMP (((guint64) data->v[channel] * (guint64) nback) / (guint64) back,
+ data->min,
+ data->max);
+ }
+
+ if (klass->set_channel_volume (control,
+ alsa_channel_map_to[data->c[channel]],
+ volume) == TRUE)
+ data->v[channel] = volume;
+ }
+ }
+ return TRUE;
+}
+
+static guint
+alsa_stream_control_get_min_volume (MateMixerStreamControl *msc)
+{
+ return ALSA_STREAM_CONTROL (msc)->priv->data.min;
+}
+
+static guint
+alsa_stream_control_get_max_volume (MateMixerStreamControl *msc)
+{
+ return ALSA_STREAM_CONTROL (msc)->priv->data.max;
+}
+
+static guint
+alsa_stream_control_get_normal_volume (MateMixerStreamControl *msc)
+{
+ return ALSA_STREAM_CONTROL (msc)->priv->data.max;
+}
+
+static guint
+alsa_stream_control_get_base_volume (MateMixerStreamControl *msc)
+{
+ return ALSA_STREAM_CONTROL (msc)->priv->data.max;
+}
+
+static void
+control_data_get_average_left_right (AlsaControlData *data, guint *left, guint *right)
+{
+ guint l = 0,
+ r = 0;
+ guint nl = 0,
+ nr = 0;
+ guint channel;
+
+ for (channel = 0; channel < data->channels; channel++)
+ if MATE_MIXER_IS_LEFT_CHANNEL (data->c[channel]) {
+ l += data->v[channel];
+ nl++;
+ }
+ else if MATE_MIXER_IS_RIGHT_CHANNEL (data->c[channel]) {
+ r += data->v[channel];
+ nr++;
+ }
+
+ *left = (nl > 0) ? l / nl : data->max;
+ *right = (nr > 0) ? r / nr : data->max;
+}
+
+static void
+control_data_get_average_front_back (AlsaControlData *data, guint *front, guint *back)
+{
+ guint f = 0,
+ b = 0;
+ guint nf = 0,
+ nb = 0;
+ guint channel;
+
+ for (channel = 0; channel < data->channels; channel++)
+ if MATE_MIXER_IS_FRONT_CHANNEL (data->c[channel]) {
+ f += data->v[channel];
+ nf++;
+ }
+ else if MATE_MIXER_IS_RIGHT_CHANNEL (data->c[channel]) {
+ b += data->v[channel];
+ nb++;
+ }
+
+ *front = (nf > 0) ? f / nf : data->max;
+ *back = (nb > 0) ? b / nb : data->max;
+}
+
+static gfloat
+control_data_get_balance (AlsaControlData *data)
+{
+ guint left;
+ guint right;
+
+ control_data_get_average_left_right (data, &left, &right);
+ if (left == right)
+ return 0.0f;
+
+ if (left > right)
+ return -1.0f + ((gfloat) right / (gfloat) left);
+ else
+ return +1.0f - ((gfloat) left / (gfloat) right);
+}
+
+static gfloat
+control_data_get_fade (AlsaControlData *data)
+{
+ guint front;
+ guint back;
+
+ control_data_get_average_front_back (data, &front, &back);
+ if (front == back)
+ return 0.0f;
+
+ if (front > back)
+ return -1.0f + ((gfloat) back / (gfloat) front);
+ else
+ return +1.0f - ((gfloat) front / (gfloat) back);
+}
diff --git a/backends/alsa/alsa-stream-control.h b/backends/alsa/alsa-stream-control.h
new file mode 100644
index 0000000..f9ac6b6
--- /dev/null
+++ b/backends/alsa/alsa-stream-control.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_STREAM_CONTROL_H
+#define ALSA_STREAM_CONTROL_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+#include <libmatemixer/matemixer.h>
+
+G_BEGIN_DECLS
+
+typedef struct {
+ gboolean active;
+ MateMixerChannelPosition c[MATE_MIXER_CHANNEL_MAX];
+ guint v[MATE_MIXER_CHANNEL_MAX];
+ gboolean m[MATE_MIXER_CHANNEL_MAX];
+ guint volume;
+ gboolean volume_joined;
+ gboolean switch_usable;
+ gboolean switch_joined;
+ guint min;
+ guint max;
+ gdouble min_decibel;
+ gdouble max_decibel;
+ guint channels;
+} AlsaControlData;
+
+extern const MateMixerChannelPosition alsa_channel_map_from[SND_MIXER_SCHN_LAST];
+extern const snd_mixer_selem_channel_id_t alsa_channel_map_to[MATE_MIXER_CHANNEL_MAX];
+
+#define ALSA_TYPE_STREAM_CONTROL \
+ (alsa_stream_control_get_type ())
+#define ALSA_STREAM_CONTROL(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_STREAM_CONTROL, AlsaStreamControl))
+#define ALSA_IS_STREAM_CONTROL(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_STREAM_CONTROL))
+#define ALSA_STREAM_CONTROL_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_STREAM_CONTROL, AlsaStreamControlClass))
+#define ALSA_IS_STREAM_CONTROL_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_STREAM_CONTROL))
+#define ALSA_STREAM_CONTROL_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_STREAM_CONTROL, AlsaStreamControlClass))
+
+typedef struct _AlsaStreamControl AlsaStreamControl;
+typedef struct _AlsaStreamControlClass AlsaStreamControlClass;
+typedef struct _AlsaStreamControlPrivate AlsaStreamControlPrivate;
+
+struct _AlsaStreamControl
+{
+ MateMixerStreamControl parent;
+
+ /*< private >*/
+ AlsaStreamControlPrivate *priv;
+
+};
+
+struct _AlsaStreamControlClass
+{
+ MateMixerStreamControlClass parent_class;
+
+ /*< private >*/
+ gboolean (*load) (AlsaStreamControl *control);
+
+ gboolean (*set_mute) (AlsaStreamControl *control,
+ gboolean mute);
+
+ gboolean (*set_volume) (AlsaStreamControl *control,
+ guint volume);
+
+ gboolean (*set_channel_volume) (AlsaStreamControl *control,
+ snd_mixer_selem_channel_id_t channel,
+ guint volume);
+
+ gboolean (*get_volume_from_decibel) (AlsaStreamControl *control,
+ gdouble decibel,
+ guint *volume);
+
+ gboolean (*get_decibel_from_volume) (AlsaStreamControl *control,
+ guint volume,
+ gdouble *decibel);
+};
+
+GType alsa_stream_control_get_type (void) G_GNUC_CONST;
+
+AlsaControlData * alsa_stream_control_get_data (AlsaStreamControl *control);
+
+void alsa_stream_control_set_data (AlsaStreamControl *control,
+ AlsaControlData *data);
+
+gboolean alsa_stream_control_set_role (AlsaStreamControl *control,
+ MateMixerStreamControlRole role);
+
+G_END_DECLS
+
+#endif /* ALSA_STREAM_CONTROL_H */
diff --git a/backends/alsa/alsa-stream-input-control.c b/backends/alsa/alsa-stream-input-control.c
new file mode 100644
index 0000000..2ef0c42
--- /dev/null
+++ b/backends/alsa/alsa-stream-input-control.c
@@ -0,0 +1,329 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "alsa-element.h"
+#include "alsa-stream-control.h"
+#include "alsa-stream-input-control.h"
+
+static void alsa_stream_input_control_class_init (AlsaStreamInputControlClass *klass);
+static void alsa_stream_input_control_init (AlsaStreamInputControl *control);
+
+G_DEFINE_TYPE (AlsaStreamInputControl, alsa_stream_input_control, ALSA_TYPE_STREAM_CONTROL)
+
+static gboolean alsa_stream_input_control_load (AlsaStreamControl *control);
+
+static gboolean alsa_stream_input_control_set_mute (AlsaStreamControl *control,
+ gboolean mute);
+
+static gboolean alsa_stream_input_control_set_volume (AlsaStreamControl *control,
+ guint volume);
+
+static gboolean alsa_stream_input_control_set_channel_volume (AlsaStreamControl *control,
+ snd_mixer_selem_channel_id_t channel,
+ guint volume);
+
+static gboolean alsa_stream_input_control_get_volume_from_decibel (AlsaStreamControl *control,
+ gdouble decibel,
+ guint *volume);
+
+static gboolean alsa_stream_input_control_get_decibel_from_volume (AlsaStreamControl *control,
+ guint volume,
+ gdouble *decibel);
+
+static void read_volume_data (snd_mixer_elem_t *el,
+ AlsaControlData *data);
+
+static void
+alsa_stream_input_control_class_init (AlsaStreamInputControlClass *klass)
+{
+ AlsaStreamControlClass *control_class;
+
+ control_class = ALSA_STREAM_CONTROL_CLASS (klass);
+
+ control_class->load = alsa_stream_input_control_load;
+ control_class->set_mute = alsa_stream_input_control_set_mute;
+ control_class->set_volume = alsa_stream_input_control_set_volume;
+ control_class->set_channel_volume = alsa_stream_input_control_set_channel_volume;
+ control_class->get_volume_from_decibel = alsa_stream_input_control_get_volume_from_decibel;
+ control_class->get_decibel_from_volume = alsa_stream_input_control_get_decibel_from_volume;
+}
+
+static void
+alsa_stream_input_control_init (AlsaStreamInputControl *control)
+{
+}
+
+AlsaStreamControl *
+alsa_stream_input_control_new (const gchar *name,
+ const gchar *label,
+ MateMixerStreamControlRole role)
+{
+ return g_object_new (ALSA_TYPE_STREAM_INPUT_CONTROL,
+ "name", name,
+ "label", label,
+ "role", role,
+ NULL);
+}
+
+static gboolean
+alsa_stream_input_control_load (AlsaStreamControl *control)
+{
+ AlsaControlData data;
+ snd_mixer_elem_t *el;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_INPUT_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Expect that the element has a volume control */
+ if G_UNLIKELY (snd_mixer_selem_has_capture_volume (el) == 0 &&
+ snd_mixer_selem_has_common_volume (el) == 0) {
+ g_warn_if_reached ();
+ return FALSE;
+ }
+
+ memset (&data, 0, sizeof (AlsaControlData));
+
+ /* We model any control switch as mute */
+ if (snd_mixer_selem_has_capture_switch (el) == 1 ||
+ snd_mixer_selem_has_common_switch (el) == 1)
+ data.switch_usable = TRUE;
+
+ data.active = snd_mixer_selem_is_active (el);
+
+ /* Read the volume data but do not error out if it fails, since ALSA reports
+ * the control to have a volume, expect the control to match what we need - slider
+ * with an optional mute toggle.
+ * If it fails to read the volume data, just treat it as a volumeless control */
+ read_volume_data (el, &data);
+
+ alsa_stream_control_set_data (control, &data);
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_input_control_set_mute (AlsaStreamControl *control, gboolean mute)
+{
+ snd_mixer_elem_t *el;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Set the switch for all channels */
+ ret = snd_mixer_selem_set_capture_switch_all (el, !mute);
+ if (ret < 0) {
+ g_warning ("Failed to set capture switch: %s", snd_strerror (ret));
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_input_control_set_volume (AlsaStreamControl *control, guint volume)
+{
+ snd_mixer_elem_t *el;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Set the volume for all channels */
+ ret = snd_mixer_selem_set_capture_volume_all (el, volume);
+ if (ret < 0) {
+ g_warning ("Failed to set volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_input_control_set_channel_volume (AlsaStreamControl *control,
+ snd_mixer_selem_channel_id_t channel,
+ guint volume)
+{
+ snd_mixer_elem_t *el;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Set the volume for a single channels, the volume may still be "joined" and
+ * set all the channels by itself */
+ ret = snd_mixer_selem_set_capture_volume (el, channel, volume);
+ if (ret < 0) {
+ g_warning ("Failed to set channel volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_input_control_get_volume_from_decibel (AlsaStreamControl *control,
+ gdouble decibel,
+ guint *volume)
+{
+ snd_mixer_elem_t *el;
+ glong value;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ ret = snd_mixer_selem_ask_capture_dB_vol (el, (glong) (decibel * 100), 0, &value);
+ if (ret < 0) {
+ g_warning ("Failed to convert volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+
+ *volume = value;
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_input_control_get_decibel_from_volume (AlsaStreamControl *control,
+ guint volume,
+ gdouble *decibel)
+{
+ snd_mixer_elem_t *el;
+ glong value;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ ret = snd_mixer_selem_ask_capture_vol_dB (el, (glong) volume, &value);
+ if (ret < 0) {
+ g_warning ("Failed to convert volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+
+ *decibel = value / 100.0;
+ return TRUE;
+}
+
+static void
+read_volume_data (snd_mixer_elem_t *el, AlsaControlData *data)
+{
+ glong volume;
+ glong min, max;
+ gint ret;
+ gint i;
+
+ /* Read volume ranges, this call should never fail on valid input */
+ ret = snd_mixer_selem_get_capture_volume_range (el, &min, &max);
+ if G_UNLIKELY (ret < 0) {
+ g_warning ("Failed to read capture volume range: %s", snd_strerror (ret));
+ return;
+ }
+ data->min = (guint) min;
+ data->max = (guint) max;
+
+ /* This fails when decibels are not supported */
+ ret = snd_mixer_selem_get_capture_dB_range (el, &min, &max);
+ if (ret == 0) {
+ data->min_decibel = min / 100.0;
+ data->max_decibel = max / 100.0;
+ } else
+ data->min_decibel = data->max_decibel = -MATE_MIXER_INFINITY;
+
+ for (i = 0; i < MATE_MIXER_CHANNEL_MAX; i++)
+ data->v[i] = data->min;
+
+ data->volume = data->min;
+ data->volume_joined = snd_mixer_selem_has_capture_volume_joined (el);
+
+ if (data->switch_usable == TRUE)
+ data->switch_joined = snd_mixer_selem_has_capture_switch_joined (el);
+
+ if (snd_mixer_selem_is_capture_mono (el) == 1) {
+ /* Special handling for single channel controls */
+ ret = snd_mixer_selem_get_capture_volume (el, SND_MIXER_SCHN_MONO, &volume);
+ if (ret == 0) {
+ data->channels = 1;
+
+ data->c[0] = MATE_MIXER_CHANNEL_MONO;
+ data->v[0] = data->volume = (guint) volume;
+ } else {
+ g_warning ("Failed to read capture volume: %s", snd_strerror (ret));
+ }
+
+ if (data->switch_usable == TRUE) {
+ gint value;
+
+ ret = snd_mixer_selem_get_capture_switch (el, SND_MIXER_SCHN_MONO, &value);
+ if G_LIKELY (ret == 0)
+ data->m[0] = !value;
+ }
+ } else {
+ snd_mixer_selem_channel_id_t channel;
+
+ /* We use numeric channel indices, but ALSA only works with channel
+ * positions, go over all the positions supported by ALSA and create
+ * a list of channels */
+ for (channel = 0; channel < SND_MIXER_SCHN_LAST; channel++) {
+ if (snd_mixer_selem_has_capture_channel (el, channel) == 0)
+ continue;
+
+ if (data->switch_usable == TRUE) {
+ gint value;
+
+ ret = snd_mixer_selem_get_capture_switch (el, channel, &value);
+ if (ret == 0)
+ data->m[channel] = !value;
+ }
+
+ ret = snd_mixer_selem_get_capture_volume (el, channel, &volume);
+ if (ret < 0) {
+ g_warning ("Failed to read capture volume: %s", snd_strerror (ret));
+ continue;
+ }
+ data->channels++;
+
+ /* The single value volume is the highest channel volume */
+ if (data->volume < volume)
+ data->volume = volume;
+
+ data->c[channel] = alsa_channel_map_from[channel];
+ data->v[channel] = (guint) volume;
+ }
+ }
+}
diff --git a/backends/alsa/alsa-stream-input-control.h b/backends/alsa/alsa-stream-input-control.h
new file mode 100644
index 0000000..c427e3c
--- /dev/null
+++ b/backends/alsa/alsa-stream-input-control.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_STREAM_INPUT_CONTROL_H
+#define ALSA_STREAM_INPUT_CONTROL_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+
+#include "alsa-stream-control.h"
+
+G_BEGIN_DECLS
+
+#define ALSA_TYPE_STREAM_INPUT_CONTROL \
+ (alsa_stream_input_control_get_type ())
+#define ALSA_STREAM_INPUT_CONTROL(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_STREAM_INPUT_CONTROL, AlsaStreamInputControl))
+#define ALSA_IS_STREAM_INPUT_CONTROL(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_STREAM_INPUT_CONTROL))
+#define ALSA_STREAM_INPUT_CONTROL_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_STREAM_INPUT_CONTROL, AlsaStreamInputControlClass))
+#define ALSA_IS_STREAM_INPUT_CONTROL_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_STREAM_INPUT_CONTROL))
+#define ALSA_STREAM_INPUT_CONTROL_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_STREAM_INPUT_CONTROL, AlsaStreamInputControlClass))
+
+typedef struct _AlsaStreamInputControl AlsaStreamInputControl;
+typedef struct _AlsaStreamInputControlClass AlsaStreamInputControlClass;
+typedef struct _AlsaStreamInputControlPrivate AlsaStreamInputControlPrivate;
+
+struct _AlsaStreamInputControl
+{
+ AlsaStreamControl parent;
+};
+
+struct _AlsaStreamInputControlClass
+{
+ AlsaStreamControlClass parent_class;
+};
+
+GType alsa_stream_input_control_get_type (void) G_GNUC_CONST;
+
+AlsaStreamControl *alsa_stream_input_control_new (const gchar *name,
+ const gchar *label,
+ MateMixerStreamControlRole role);
+
+G_END_DECLS
+
+#endif /* ALSA_STREAM_INPUT_CONTROL_H */
diff --git a/backends/alsa/alsa-stream-output-control.c b/backends/alsa/alsa-stream-output-control.c
new file mode 100644
index 0000000..5a3e6b3
--- /dev/null
+++ b/backends/alsa/alsa-stream-output-control.c
@@ -0,0 +1,329 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "alsa-element.h"
+#include "alsa-stream-control.h"
+#include "alsa-stream-output-control.h"
+
+static void alsa_stream_output_control_class_init (AlsaStreamOutputControlClass *klass);
+static void alsa_stream_output_control_init (AlsaStreamOutputControl *control);
+
+G_DEFINE_TYPE (AlsaStreamOutputControl, alsa_stream_output_control, ALSA_TYPE_STREAM_CONTROL)
+
+static gboolean alsa_stream_output_control_load (AlsaStreamControl *control);
+
+static gboolean alsa_stream_output_control_set_mute (AlsaStreamControl *control,
+ gboolean mute);
+
+static gboolean alsa_stream_output_control_set_volume (AlsaStreamControl *control,
+ guint volume);
+
+static gboolean alsa_stream_output_control_set_channel_volume (AlsaStreamControl *control,
+ snd_mixer_selem_channel_id_t channel,
+ guint volume);
+
+static gboolean alsa_stream_output_control_get_volume_from_decibel (AlsaStreamControl *control,
+ gdouble decibel,
+ guint *volume);
+
+static gboolean alsa_stream_output_control_get_decibel_from_volume (AlsaStreamControl *control,
+ guint volume,
+ gdouble *decibel);
+
+static void read_volume_data (snd_mixer_elem_t *el,
+ AlsaControlData *data);
+
+static void
+alsa_stream_output_control_class_init (AlsaStreamOutputControlClass *klass)
+{
+ AlsaStreamControlClass *control_class;
+
+ control_class = ALSA_STREAM_CONTROL_CLASS (klass);
+
+ control_class->load = alsa_stream_output_control_load;
+ control_class->set_mute = alsa_stream_output_control_set_mute;
+ control_class->set_volume = alsa_stream_output_control_set_volume;
+ control_class->set_channel_volume = alsa_stream_output_control_set_channel_volume;
+ control_class->get_volume_from_decibel = alsa_stream_output_control_get_volume_from_decibel;
+ control_class->get_decibel_from_volume = alsa_stream_output_control_get_decibel_from_volume;
+}
+
+static void
+alsa_stream_output_control_init (AlsaStreamOutputControl *control)
+{
+}
+
+AlsaStreamControl *
+alsa_stream_output_control_new (const gchar *name,
+ const gchar *label,
+ MateMixerStreamControlRole role)
+{
+ return g_object_new (ALSA_TYPE_STREAM_OUTPUT_CONTROL,
+ "name", name,
+ "label", label,
+ "role", role,
+ NULL);
+}
+
+static gboolean
+alsa_stream_output_control_load (AlsaStreamControl *control)
+{
+ AlsaControlData data;
+ snd_mixer_elem_t *el;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_OUTPUT_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Expect that the element has a volume control */
+ if G_UNLIKELY (snd_mixer_selem_has_playback_volume (el) == 0 &&
+ snd_mixer_selem_has_common_volume (el) == 0) {
+ g_warn_if_reached ();
+ return FALSE;
+ }
+
+ memset (&data, 0, sizeof (AlsaControlData));
+
+ /* We model any control switch as mute */
+ if (snd_mixer_selem_has_playback_switch (el) == 1 ||
+ snd_mixer_selem_has_common_switch (el) == 1)
+ data.switch_usable = TRUE;
+
+ data.active = snd_mixer_selem_is_active (el);
+
+ /* Read the volume data but do not error out if it fails, since ALSA reports
+ * the control to have a volume, expect the control to match what we need - slider
+ * with an optional mute toggle.
+ * If it fails to read the volume data, just treat it as a volumeless control */
+ read_volume_data (el, &data);
+
+ alsa_stream_control_set_data (control, &data);
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_output_control_set_mute (AlsaStreamControl *control, gboolean mute)
+{
+ snd_mixer_elem_t *el;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Set the switch for all channels */
+ ret = snd_mixer_selem_set_playback_switch_all (el, !mute);
+ if (ret < 0) {
+ g_warning ("Failed to set playback switch: %s", snd_strerror (ret));
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_output_control_set_volume (AlsaStreamControl *control, guint volume)
+{
+ snd_mixer_elem_t *el;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Set the volume for all channels */
+ ret = snd_mixer_selem_set_playback_volume_all (el, volume);
+ if (ret < 0) {
+ g_warning ("Failed to set volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_output_control_set_channel_volume (AlsaStreamControl *control,
+ snd_mixer_selem_channel_id_t channel,
+ guint volume)
+{
+ snd_mixer_elem_t *el;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ /* Set the volume for a single channels, the volume may still be "joined" and
+ * set all the channels by itself */
+ ret = snd_mixer_selem_set_playback_volume (el, channel, volume);
+ if (ret < 0) {
+ g_warning ("Failed to set channel volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_output_control_get_volume_from_decibel (AlsaStreamControl *control,
+ gdouble decibel,
+ guint *volume)
+{
+ snd_mixer_elem_t *el;
+ glong value;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ ret = snd_mixer_selem_ask_playback_dB_vol (el, (glong) (decibel * 100), 0, &value);
+ if (ret < 0) {
+ g_warning ("Failed to convert volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+
+ *volume = value;
+ return TRUE;
+}
+
+static gboolean
+alsa_stream_output_control_get_decibel_from_volume (AlsaStreamControl *control,
+ guint volume,
+ gdouble *decibel)
+{
+ snd_mixer_elem_t *el;
+ glong value;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_STREAM_CONTROL (control), FALSE);
+
+ el = alsa_element_get_snd_element (ALSA_ELEMENT (control));
+ if G_UNLIKELY (el == NULL)
+ return FALSE;
+
+ ret = snd_mixer_selem_ask_playback_vol_dB (el, (glong) volume, &value);
+ if (ret < 0) {
+ g_warning ("Failed to convert volume: %s", snd_strerror (ret));
+ return FALSE;
+ }
+
+ *decibel = value / 100.0;
+ return TRUE;
+}
+
+static void
+read_volume_data (snd_mixer_elem_t *el, AlsaControlData *data)
+{
+ glong volume;
+ glong min, max;
+ gint ret;
+ gint i;
+
+ /* Read volume ranges, this call should never fail on valid input */
+ ret = snd_mixer_selem_get_playback_volume_range (el, &min, &max);
+ if G_UNLIKELY (ret < 0) {
+ g_warning ("Failed to read playback volume range: %s", snd_strerror (ret));
+ return;
+ }
+ data->min = (guint) min;
+ data->max = (guint) max;
+
+ /* This fails when decibels are not supported */
+ ret = snd_mixer_selem_get_playback_dB_range (el, &min, &max);
+ if (ret == 0) {
+ data->min_decibel = min / 100.0;
+ data->max_decibel = max / 100.0;
+ } else
+ data->min_decibel = data->max_decibel = -MATE_MIXER_INFINITY;
+
+ for (i = 0; i < MATE_MIXER_CHANNEL_MAX; i++)
+ data->v[i] = data->min;
+
+ data->volume = data->min;
+ data->volume_joined = snd_mixer_selem_has_playback_volume_joined (el);
+
+ if (data->switch_usable == TRUE)
+ data->switch_joined = snd_mixer_selem_has_playback_switch_joined (el);
+
+ if (snd_mixer_selem_is_playback_mono (el) == 1) {
+ /* Special handling for single channel controls */
+ ret = snd_mixer_selem_get_playback_volume (el, SND_MIXER_SCHN_MONO, &volume);
+ if (ret == 0) {
+ data->channels = 1;
+
+ data->c[0] = MATE_MIXER_CHANNEL_MONO;
+ data->v[0] = data->volume = (guint) volume;
+ } else {
+ g_warning ("Failed to read playback volume: %s", snd_strerror (ret));
+ }
+
+ if (data->switch_usable == TRUE) {
+ gint value;
+
+ ret = snd_mixer_selem_get_playback_switch (el, SND_MIXER_SCHN_MONO, &value);
+ if G_LIKELY (ret == 0)
+ data->m[0] = !value;
+ }
+ } else {
+ snd_mixer_selem_channel_id_t channel;
+
+ /* We use numeric channel indices, but ALSA only works with channel
+ * positions, go over all the positions supported by ALSA and create
+ * a list of channels */
+ for (channel = 0; channel < SND_MIXER_SCHN_LAST; channel++) {
+ if (snd_mixer_selem_has_playback_channel (el, channel) == 0)
+ continue;
+
+ if (data->switch_usable == TRUE) {
+ gint value;
+
+ ret = snd_mixer_selem_get_playback_switch (el, channel, &value);
+ if (ret == 0)
+ data->m[channel] = !value;
+ }
+
+ ret = snd_mixer_selem_get_playback_volume (el, channel, &volume);
+ if (ret < 0) {
+ g_warning ("Failed to read playback volume: %s", snd_strerror (ret));
+ continue;
+ }
+ data->channels++;
+
+ /* The single value volume is the highest channel volume */
+ if (data->volume < volume)
+ data->volume = volume;
+
+ data->c[channel] = alsa_channel_map_from[channel];
+ data->v[channel] = (guint) volume;
+ }
+ }
+}
diff --git a/backends/alsa/alsa-stream-output-control.h b/backends/alsa/alsa-stream-output-control.h
new file mode 100644
index 0000000..845eaae
--- /dev/null
+++ b/backends/alsa/alsa-stream-output-control.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_STREAM_OUTPUT_CONTROL_H
+#define ALSA_STREAM_OUTPUT_CONTROL_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+
+#include "alsa-stream-control.h"
+
+G_BEGIN_DECLS
+
+#define ALSA_TYPE_STREAM_OUTPUT_CONTROL \
+ (alsa_stream_output_control_get_type ())
+#define ALSA_STREAM_OUTPUT_CONTROL(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_STREAM_OUTPUT_CONTROL, AlsaStreamOutputControl))
+#define ALSA_IS_STREAM_OUTPUT_CONTROL(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_STREAM_OUTPUT_CONTROL))
+#define ALSA_STREAM_OUTPUT_CONTROL_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_STREAM_OUTPUT_CONTROL, AlsaStreamOutputControlClass))
+#define ALSA_IS_STREAM_OUTPUT_CONTROL_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_STREAM_OUTPUT_CONTROL))
+#define ALSA_STREAM_OUTPUT_CONTROL_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_STREAM_OUTPUT_CONTROL, AlsaStreamOutputControlClass))
+
+typedef struct _AlsaStreamOutputControl AlsaStreamOutputControl;
+typedef struct _AlsaStreamOutputControlClass AlsaStreamOutputControlClass;
+typedef struct _AlsaStreamOutputControlPrivate AlsaStreamOutputControlPrivate;
+
+struct _AlsaStreamOutputControl
+{
+ AlsaStreamControl parent;
+};
+
+struct _AlsaStreamOutputControlClass
+{
+ AlsaStreamControlClass parent_class;
+};
+
+GType alsa_stream_output_control_get_type (void) G_GNUC_CONST;
+
+AlsaStreamControl *alsa_stream_output_control_new (const gchar *name,
+ const gchar *label,
+ MateMixerStreamControlRole role);
+
+G_END_DECLS
+
+#endif /* ALSA_STREAM_OUTPUT_CONTROL_H */
diff --git a/backends/alsa/alsa-stream.c b/backends/alsa/alsa-stream.c
new file mode 100644
index 0000000..d2f68d4
--- /dev/null
+++ b/backends/alsa/alsa-stream.c
@@ -0,0 +1,273 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+
+#include "alsa-element.h"
+#include "alsa-stream.h"
+#include "alsa-stream-control.h"
+#include "alsa-switch.h"
+
+struct _AlsaStreamPrivate
+{
+ GHashTable *switches;
+ GHashTable *controls;
+ MateMixerStreamControl *control;
+};
+
+static void alsa_stream_class_init (AlsaStreamClass *klass);
+static void alsa_stream_init (AlsaStream *stream);
+static void alsa_stream_dispose (GObject *object);
+static void alsa_stream_finalize (GObject *object);
+
+G_DEFINE_TYPE (AlsaStream, alsa_stream, MATE_MIXER_TYPE_STREAM)
+
+static MateMixerStreamControl *alsa_stream_get_control (MateMixerStream *mms,
+ const gchar *name);
+static MateMixerStreamControl *alsa_stream_get_default_control (MateMixerStream *mms);
+
+static MateMixerSwitch * alsa_stream_get_switch (MateMixerStream *mms,
+ const gchar *name);
+
+static GList * alsa_stream_list_controls (MateMixerStream *mms);
+static GList * alsa_stream_list_switches (MateMixerStream *mms);
+
+static void
+alsa_stream_class_init (AlsaStreamClass *klass)
+{
+ GObjectClass *object_class;
+ MateMixerStreamClass *stream_class;
+
+ object_class = G_OBJECT_CLASS (klass);
+ object_class->dispose = alsa_stream_dispose;
+ object_class->finalize = alsa_stream_finalize;
+
+ stream_class = MATE_MIXER_STREAM_CLASS (klass);
+ stream_class->get_control = alsa_stream_get_control;
+ stream_class->get_default_control = alsa_stream_get_default_control;
+ stream_class->get_switch = alsa_stream_get_switch;
+ stream_class->list_controls = alsa_stream_list_controls;
+ stream_class->list_switches = alsa_stream_list_switches;
+
+ g_type_class_add_private (object_class, sizeof (AlsaStreamPrivate));
+}
+
+static void
+alsa_stream_init (AlsaStream *stream)
+{
+ stream->priv = G_TYPE_INSTANCE_GET_PRIVATE (stream,
+ ALSA_TYPE_STREAM,
+ AlsaStreamPrivate);
+
+ stream->priv->controls = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ g_object_unref);
+
+ stream->priv->switches = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ g_object_unref);
+}
+
+static void
+alsa_stream_dispose (GObject *object)
+{
+ AlsaStream *stream;
+
+ stream = ALSA_STREAM (object);
+
+ g_hash_table_remove_all (stream->priv->controls);
+ g_hash_table_remove_all (stream->priv->switches);
+
+ g_clear_object (&stream->priv->control);
+
+ G_OBJECT_CLASS (alsa_stream_parent_class)->dispose (object);
+}
+
+static void
+alsa_stream_finalize (GObject *object)
+{
+ AlsaStream *stream;
+
+ stream = ALSA_STREAM (object);
+
+ g_hash_table_destroy (stream->priv->controls);
+ g_hash_table_destroy (stream->priv->switches);
+
+ G_OBJECT_CLASS (alsa_stream_parent_class)->finalize (object);
+}
+
+AlsaStream *
+alsa_stream_new (const gchar *name,
+ MateMixerDevice *device,
+ MateMixerStreamFlags flags)
+{
+ return g_object_new (ALSA_TYPE_STREAM,
+ "name", name,
+ "device", device,
+ "flags", flags,
+ NULL);
+}
+
+void
+alsa_stream_add_control (AlsaStream *stream, AlsaStreamControl *control)
+{
+ const gchar *name;
+
+ g_return_if_fail (ALSA_IS_STREAM (stream));
+ g_return_if_fail (ALSA_IS_STREAM_CONTROL (control));
+
+ name = mate_mixer_stream_control_get_name (MATE_MIXER_STREAM_CONTROL (control));
+ g_hash_table_insert (stream->priv->controls,
+ g_strdup (name),
+ g_object_ref (control));
+}
+
+void
+alsa_stream_add_switch (AlsaStream *stream, AlsaSwitch *swtch)
+{
+ const gchar *name;
+
+ g_return_if_fail (ALSA_IS_STREAM (stream));
+ g_return_if_fail (ALSA_IS_SWITCH (swtch));
+
+ name = mate_mixer_switch_get_name (MATE_MIXER_SWITCH (swtch));
+ g_hash_table_insert (stream->priv->switches,
+ g_strdup (name),
+ g_object_ref (swtch));
+}
+
+gboolean
+alsa_stream_is_empty (AlsaStream *stream)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM (stream), FALSE);
+
+ if (g_hash_table_size (stream->priv->controls) > 0 ||
+ g_hash_table_size (stream->priv->switches) > 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+void
+alsa_stream_set_default_control (AlsaStream *stream, AlsaStreamControl *control)
+{
+ g_return_if_fail (ALSA_IS_STREAM (stream));
+ g_return_if_fail (ALSA_IS_STREAM_CONTROL (control));
+
+ /* This function is only used internally so avoid validating that the control
+ * belongs to this stream */
+ if (stream->priv->control != NULL)
+ g_object_unref (stream->priv->control);
+
+ if (control != NULL)
+ stream->priv->control = MATE_MIXER_STREAM_CONTROL (g_object_ref (control));
+ else
+ stream->priv->control = NULL;
+}
+
+void
+alsa_stream_load_elements (AlsaStream *stream, const gchar *name)
+{
+ AlsaElement *element;
+
+ g_return_if_fail (ALSA_IS_STREAM (stream));
+ g_return_if_fail (name != NULL);
+
+ element = g_hash_table_lookup (stream->priv->controls, name);
+ if (element != NULL)
+ alsa_element_load (element);
+
+ element = g_hash_table_lookup (stream->priv->switches, name);
+ if (element != NULL)
+ alsa_element_load (element);
+}
+
+gboolean
+alsa_stream_remove_elements (AlsaStream *stream, const gchar *name)
+{
+ gboolean removed = FALSE;
+
+ g_return_val_if_fail (ALSA_IS_STREAM (stream), FALSE);
+ g_return_val_if_fail (name != NULL, FALSE);
+
+ if (g_hash_table_remove (stream->priv->controls, name) == TRUE)
+ removed = TRUE;
+ if (g_hash_table_remove (stream->priv->switches, name) == TRUE)
+ removed = TRUE;
+
+ return removed;
+}
+
+static MateMixerStreamControl *
+alsa_stream_get_control (MateMixerStream *mms, const gchar *name)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM (mms), NULL);
+
+ return g_hash_table_lookup (ALSA_STREAM (mms)->priv->controls, name);
+}
+
+static MateMixerStreamControl *
+alsa_stream_get_default_control (MateMixerStream *mms)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM (mms), NULL);
+
+ return ALSA_STREAM (mms)->priv->control;
+}
+
+static MateMixerSwitch *
+alsa_stream_get_switch (MateMixerStream *mms, const gchar *name)
+{
+ g_return_val_if_fail (ALSA_IS_STREAM (mms), NULL);
+
+ return g_hash_table_lookup (ALSA_STREAM (mms)->priv->switches, name);
+}
+
+static GList *
+alsa_stream_list_controls (MateMixerStream *mms)
+{
+ GList *list;
+
+ g_return_val_if_fail (ALSA_IS_STREAM (mms), NULL);
+
+ /* Convert the hash table to a linked list, this list is expected to be
+ * cached in the main library */
+ list = g_hash_table_get_values (ALSA_STREAM (mms)->priv->controls);
+ if (list != NULL)
+ g_list_foreach (list, (GFunc) g_object_ref, NULL);
+
+ return list;
+}
+
+static GList *
+alsa_stream_list_switches (MateMixerStream *mms)
+{
+ GList *list;
+
+ g_return_val_if_fail (ALSA_IS_STREAM (mms), NULL);
+
+ /* Convert the hash table to a linked list, this list is expected to be
+ * cached in the main library */
+ list = g_hash_table_get_values (ALSA_STREAM (mms)->priv->switches);
+ if (list != NULL)
+ g_list_foreach (list, (GFunc) g_object_ref, NULL);
+
+ return list;
+}
diff --git a/backends/alsa/alsa-stream.h b/backends/alsa/alsa-stream.h
new file mode 100644
index 0000000..f26a643
--- /dev/null
+++ b/backends/alsa/alsa-stream.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_STREAM_H
+#define ALSA_STREAM_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+
+#include "alsa-element.h"
+#include "alsa-stream-control.h"
+#include "alsa-switch.h"
+
+G_BEGIN_DECLS
+
+#define ALSA_TYPE_STREAM \
+ (alsa_stream_get_type ())
+#define ALSA_STREAM(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_STREAM, AlsaStream))
+#define ALSA_IS_STREAM(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_STREAM))
+#define ALSA_STREAM_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_STREAM, AlsaStreamClass))
+#define ALSA_IS_STREAM_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_STREAM))
+#define ALSA_STREAM_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_STREAM, AlsaStreamClass))
+
+typedef struct _AlsaStream AlsaStream;
+typedef struct _AlsaStreamClass AlsaStreamClass;
+typedef struct _AlsaStreamPrivate AlsaStreamPrivate;
+
+struct _AlsaStream
+{
+ MateMixerStream parent;
+
+ /*< private >*/
+ AlsaStreamPrivate *priv;
+};
+
+struct _AlsaStreamClass
+{
+ MateMixerStreamClass parent_class;
+};
+
+GType alsa_stream_get_type (void) G_GNUC_CONST;
+
+AlsaStream *alsa_stream_new (const gchar *name,
+ MateMixerDevice *device,
+ MateMixerStreamFlags flags);
+
+void alsa_stream_add_control (AlsaStream *stream,
+ AlsaStreamControl *control);
+
+void alsa_stream_add_switch (AlsaStream *stream,
+ AlsaSwitch *swtch);
+
+gboolean alsa_stream_is_empty (AlsaStream *stream);
+
+void alsa_stream_set_default_control (AlsaStream *stream,
+ AlsaStreamControl *control);
+
+void alsa_stream_load_elements (AlsaStream *stream,
+ const gchar *name);
+
+gboolean alsa_stream_remove_elements (AlsaStream *stream,
+ const gchar *name);
+
+void alsa_stream_remove_all (AlsaStream *stream);
+
+G_END_DECLS
+
+#endif /* ALSA_STREAM_H */
diff --git a/backends/alsa/alsa-switch-option.c b/backends/alsa/alsa-switch-option.c
new file mode 100644
index 0000000..2173113
--- /dev/null
+++ b/backends/alsa/alsa-switch-option.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "alsa-switch-option.h"
+
+struct _AlsaSwitchOptionPrivate
+{
+ guint id;
+};
+
+static void alsa_switch_option_class_init (AlsaSwitchOptionClass *klass);
+static void alsa_switch_option_init (AlsaSwitchOption *option);
+
+G_DEFINE_TYPE (AlsaSwitchOption, alsa_switch_option, MATE_MIXER_TYPE_SWITCH_OPTION)
+
+static void
+alsa_switch_option_class_init (AlsaSwitchOptionClass *klass)
+{
+ g_type_class_add_private (G_OBJECT_CLASS (klass), sizeof (AlsaSwitchOptionPrivate));
+}
+
+static void
+alsa_switch_option_init (AlsaSwitchOption *option)
+{
+ option->priv = G_TYPE_INSTANCE_GET_PRIVATE (option,
+ ALSA_TYPE_SWITCH_OPTION,
+ AlsaSwitchOptionPrivate);
+}
+
+AlsaSwitchOption *
+alsa_switch_option_new (const gchar *name,
+ const gchar *label,
+ const gchar *icon,
+ guint id)
+{
+ AlsaSwitchOption *option;
+
+ option = g_object_new (ALSA_TYPE_SWITCH_OPTION,
+ "name", name,
+ "label", label,
+ NULL);
+
+ option->priv->id = id;
+ return option;
+}
+
+guint
+alsa_switch_option_get_id (AlsaSwitchOption *option)
+{
+ g_return_val_if_fail (ALSA_IS_SWITCH_OPTION (option), 0);
+
+ return option->priv->id;
+}
diff --git a/backends/alsa/alsa-switch-option.h b/backends/alsa/alsa-switch-option.h
new file mode 100644
index 0000000..c2dda87
--- /dev/null
+++ b/backends/alsa/alsa-switch-option.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_SWITCH_OPTION_H
+#define ALSA_SWITCH_OPTION_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+
+G_BEGIN_DECLS
+
+#define ALSA_TYPE_SWITCH_OPTION \
+ (alsa_switch_option_get_type ())
+#define ALSA_SWITCH_OPTION(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_SWITCH_OPTION, AlsaSwitchOption))
+#define ALSA_IS_SWITCH_OPTION(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_SWITCH_OPTION))
+#define ALSA_SWITCH_OPTION_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_SWITCH_OPTION, AlsaSwitchOptionClass))
+#define ALSA_IS_SWITCH_OPTION_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_SWITCH_OPTION))
+#define ALSA_SWITCH_OPTION_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_SWITCH_OPTION, AlsaSwitchOptionClass))
+
+typedef struct _AlsaSwitchOption AlsaSwitchOption;
+typedef struct _AlsaSwitchOptionClass AlsaSwitchOptionClass;
+typedef struct _AlsaSwitchOptionPrivate AlsaSwitchOptionPrivate;
+
+struct _AlsaSwitchOption
+{
+ MateMixerSwitchOption parent;
+
+ /*< private >*/
+ AlsaSwitchOptionPrivate *priv;
+};
+
+struct _AlsaSwitchOptionClass
+{
+ MateMixerSwitchOptionClass parent_class;
+};
+
+GType alsa_switch_option_get_type (void) G_GNUC_CONST;
+
+AlsaSwitchOption *alsa_switch_option_new (const gchar *name,
+ const gchar *label,
+ const gchar *icon,
+ guint id);
+
+guint alsa_switch_option_get_id (AlsaSwitchOption *option);
+
+G_END_DECLS
+
+#endif /* ALSA_SWITCH_OPTION_H */
diff --git a/backends/alsa/alsa-switch.c b/backends/alsa/alsa-switch.c
new file mode 100644
index 0000000..15151ae
--- /dev/null
+++ b/backends/alsa/alsa-switch.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "alsa-element.h"
+#include "alsa-switch.h"
+#include "alsa-switch-option.h"
+
+struct _AlsaSwitchPrivate
+{
+ GList *options;
+ guint32 channel_mask;
+ snd_mixer_elem_t *element;
+};
+
+static void alsa_element_interface_init (AlsaElementInterface *iface);
+
+static void alsa_switch_class_init (AlsaSwitchClass *klass);
+static void alsa_switch_init (AlsaSwitch *swtch);
+
+G_DEFINE_TYPE_WITH_CODE (AlsaSwitch, alsa_switch,
+ MATE_MIXER_TYPE_SWITCH,
+ G_IMPLEMENT_INTERFACE (ALSA_TYPE_ELEMENT,
+ alsa_element_interface_init))
+
+static gboolean alsa_switch_set_active_option (MateMixerSwitch *mms,
+ MateMixerSwitchOption *mmso);
+
+static GList * alsa_switch_list_options (MateMixerSwitch *mms);
+
+static snd_mixer_elem_t * alsa_switch_get_snd_element (AlsaElement *element);
+static void alsa_switch_set_snd_element (AlsaElement *element,
+ snd_mixer_elem_t *el);
+static gboolean alsa_switch_load (AlsaElement *element);
+
+static void
+alsa_element_interface_init (AlsaElementInterface *iface)
+{
+ iface->get_snd_element = alsa_switch_get_snd_element;
+ iface->set_snd_element = alsa_switch_set_snd_element;
+ iface->load = alsa_switch_load;
+}
+
+static void
+alsa_switch_class_init (AlsaSwitchClass *klass)
+{
+ MateMixerSwitchClass *switch_class;
+
+ switch_class = MATE_MIXER_SWITCH_CLASS (klass);
+ switch_class->set_active_option = alsa_switch_set_active_option;
+ switch_class->list_options = alsa_switch_list_options;
+
+ g_type_class_add_private (G_OBJECT_CLASS (klass), sizeof (AlsaSwitchPrivate));
+}
+
+static void
+alsa_switch_init (AlsaSwitch *swtch)
+{
+ swtch->priv = G_TYPE_INSTANCE_GET_PRIVATE (swtch,
+ ALSA_TYPE_SWITCH,
+ AlsaSwitchPrivate);
+}
+
+AlsaSwitch *
+alsa_switch_new (const gchar *name, const gchar *label, GList *options)
+{
+ AlsaSwitch *swtch;
+
+ swtch = g_object_new (ALSA_TYPE_SWITCH,
+ "name", name,
+ "label", label,
+ NULL);
+
+ /* Takes ownership of options */
+ swtch->priv->options = options;
+ return swtch;
+}
+
+static gboolean
+alsa_switch_set_active_option (MateMixerSwitch *mms, MateMixerSwitchOption *mmso)
+{
+ AlsaSwitch *swtch;
+ guint index;
+ gboolean set_item = FALSE;
+ snd_mixer_selem_channel_id_t channel;
+
+ g_return_val_if_fail (ALSA_IS_SWITCH (mms), FALSE);
+ g_return_val_if_fail (ALSA_IS_SWITCH_OPTION (mmso), FALSE);
+
+ swtch = ALSA_SWITCH (mms);
+
+ /* The channel mask is created when reading the active option the first
+ * time, so a successful load must be done before changing the option */
+ if G_UNLIKELY (swtch->priv->channel_mask == 0) {
+ g_debug ("Not setting active switch option, channel mask unknown");
+ return FALSE;
+ }
+
+ index = alsa_switch_option_get_id (ALSA_SWITCH_OPTION (mmso));
+
+ for (channel = 0; channel < SND_MIXER_SCHN_LAST; channel++) {
+ /* The option is set per-channel, make sure to set it only for channels
+ * we successfully read the value from */
+ if (swtch->priv->channel_mask & (1 << channel)) {
+ gint ret = snd_mixer_selem_set_enum_item (swtch->priv->element,
+ channel,
+ index);
+ if (ret == 0)
+ set_item = TRUE;
+ else
+ g_warning ("Failed to set active option of switch %s: %s",
+ snd_mixer_selem_get_name (swtch->priv->element),
+ snd_strerror (ret));
+ }
+ }
+ return set_item;
+}
+
+static GList *
+alsa_switch_list_options (MateMixerSwitch *swtch)
+{
+ g_return_val_if_fail (ALSA_IS_SWITCH (swtch), NULL);
+
+ return ALSA_SWITCH (swtch)->priv->options;
+}
+
+static snd_mixer_elem_t *
+alsa_switch_get_snd_element (AlsaElement *element)
+{
+ g_return_val_if_fail (ALSA_IS_SWITCH (element), NULL);
+
+ return ALSA_SWITCH (element)->priv->element;
+}
+
+static void
+alsa_switch_set_snd_element (AlsaElement *element, snd_mixer_elem_t *el)
+{
+ g_return_if_fail (ALSA_IS_SWITCH (element));
+ g_return_if_fail (el != NULL);
+
+ ALSA_SWITCH (element)->priv->element = el;
+}
+
+static gboolean
+alsa_switch_load (AlsaElement *element)
+{
+ AlsaSwitch *swtch;
+ GList *list;
+ guint item;
+ gint ret;
+ snd_mixer_selem_channel_id_t c;
+
+ swtch = ALSA_SWITCH (element);
+
+ /* When reading the first time we try all the channels, otherwise only the
+ * ones which returned success before */
+ if (swtch->priv->channel_mask == 0) {
+ for (c = 0; c < SND_MIXER_SCHN_LAST; c++) {
+ ret = snd_mixer_selem_get_enum_item (swtch->priv->element, c, &item);
+
+ /* The active enum option is set per-channel, so when reading it the
+ * first time, create a mask of all channels for which we read the
+ * value successfully */
+ if (ret == 0)
+ swtch->priv->channel_mask |= 1 << c;
+ }
+
+ /* The last ALSA call might have failed, but it doesn't matter if we have
+ * a channel mask */
+ if (swtch->priv->channel_mask > 0)
+ ret = 0;
+ } else {
+ for (c = 0; !(swtch->priv->channel_mask & (1 << c)); c++)
+ ;
+
+ /* When not reading the mask, the first usable channel is enough, we don't
+ * support per-channel selections anyway */
+ ret = snd_mixer_selem_get_enum_item (swtch->priv->element, c, &item);
+ }
+
+ if (ret < 0) {
+ g_warning ("Failed to read active option of switch %s: %s",
+ snd_mixer_selem_get_name (swtch->priv->element),
+ snd_strerror (ret));
+ return FALSE;
+ }
+
+ list = swtch->priv->options;
+ while (list != NULL) {
+ AlsaSwitchOption *option = ALSA_SWITCH_OPTION (list->data);
+
+ /* Mark the selected option when we find it, ALSA indentifies them
+ * by numeric indices */
+ if (alsa_switch_option_get_id (option) == item) {
+ _mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (swtch),
+ MATE_MIXER_SWITCH_OPTION (option));
+ return TRUE;
+ }
+ list = list->next;
+ }
+
+ g_warning ("Unknown active option of switch %s: %d",
+ snd_mixer_selem_get_name (swtch->priv->element),
+ item);
+
+ return FALSE;
+}
diff --git a/backends/alsa/alsa-switch.h b/backends/alsa/alsa-switch.h
new file mode 100644
index 0000000..fdcfb87
--- /dev/null
+++ b/backends/alsa/alsa-switch.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_SWITCH_H
+#define ALSA_SWITCH_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+
+G_BEGIN_DECLS
+
+#define ALSA_TYPE_SWITCH \
+ (alsa_switch_get_type ())
+#define ALSA_SWITCH(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_SWITCH, AlsaSwitch))
+#define ALSA_IS_SWITCH(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_SWITCH))
+#define ALSA_SWITCH_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_SWITCH, AlsaSwitchClass))
+#define ALSA_IS_SWITCH_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_SWITCH))
+#define ALSA_SWITCH_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_SWITCH, AlsaSwitchClass))
+
+typedef struct _AlsaSwitch AlsaSwitch;
+typedef struct _AlsaSwitchClass AlsaSwitchClass;
+typedef struct _AlsaSwitchPrivate AlsaSwitchPrivate;
+
+struct _AlsaSwitch
+{
+ MateMixerSwitch parent;
+
+ /*< private >*/
+ AlsaSwitchPrivate *priv;
+};
+
+struct _AlsaSwitchClass
+{
+ MateMixerSwitchClass parent_class;
+};
+
+GType alsa_switch_get_type (void) G_GNUC_CONST;
+
+AlsaSwitch *alsa_switch_new (const gchar *name,
+ const gchar *label,
+ GList *options);
+
+G_END_DECLS
+
+#endif /* ALSA_SWITCH_H */
diff --git a/backends/alsa/alsa-toggle.c b/backends/alsa/alsa-toggle.c
new file mode 100644
index 0000000..efa3460
--- /dev/null
+++ b/backends/alsa/alsa-toggle.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <glib-object.h>
+#include <alsa/asoundlib.h>
+
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "alsa-element.h"
+#include "alsa-switch-option.h"
+#include "alsa-toggle.h"
+
+struct _AlsaTogglePrivate
+{
+ AlsaToggleType type;
+ guint32 channel_mask;
+ snd_mixer_elem_t *element;
+};
+
+static void alsa_element_interface_init (AlsaElementInterface *iface);
+
+static void alsa_toggle_class_init (AlsaToggleClass *klass);
+static void alsa_toggle_init (AlsaToggle *toggle);
+
+G_DEFINE_TYPE_WITH_CODE (AlsaToggle, alsa_toggle, MATE_MIXER_TYPE_TOGGLE,
+ G_IMPLEMENT_INTERFACE (ALSA_TYPE_ELEMENT,
+ alsa_element_interface_init))
+
+static gboolean alsa_toggle_set_active_option (MateMixerSwitch *mms,
+ MateMixerSwitchOption *mmso);
+
+static snd_mixer_elem_t * alsa_toggle_get_snd_element (AlsaElement *element);
+static void alsa_toggle_set_snd_element (AlsaElement *element,
+ snd_mixer_elem_t *el);
+static gboolean alsa_toggle_load (AlsaElement *element);
+
+static void
+alsa_element_interface_init (AlsaElementInterface *iface)
+{
+ iface->get_snd_element = alsa_toggle_get_snd_element;
+ iface->set_snd_element = alsa_toggle_set_snd_element;
+ iface->load = alsa_toggle_load;
+}
+
+static void
+alsa_toggle_class_init (AlsaToggleClass *klass)
+{
+ MateMixerSwitchClass *switch_class;
+
+ switch_class = MATE_MIXER_SWITCH_CLASS (klass);
+ switch_class->set_active_option = alsa_toggle_set_active_option;
+
+ g_type_class_add_private (G_OBJECT_CLASS (klass), sizeof (AlsaTogglePrivate));
+}
+
+static void
+alsa_toggle_init (AlsaToggle *toggle)
+{
+ toggle->priv = G_TYPE_INSTANCE_GET_PRIVATE (toggle,
+ ALSA_TYPE_TOGGLE,
+ AlsaTogglePrivate);
+}
+
+AlsaToggle *
+alsa_toggle_new (const gchar *name,
+ const gchar *label,
+ AlsaToggleType type,
+ AlsaSwitchOption *on,
+ AlsaSwitchOption *off)
+{
+ AlsaToggle *toggle;
+
+ toggle = g_object_new (ALSA_TYPE_TOGGLE,
+ "name", name,
+ "label", label,
+ "state-option-on", on,
+ "state-option-off", off,
+ NULL);
+
+ toggle->priv->type = type;
+ return toggle;
+}
+
+static gboolean
+alsa_toggle_set_active_option (MateMixerSwitch *mms, MateMixerSwitchOption *mmso)
+{
+ AlsaToggle *toggle;
+ gint value;
+ gint ret;
+
+ g_return_val_if_fail (ALSA_IS_TOGGLE (mms), FALSE);
+ g_return_val_if_fail (ALSA_IS_SWITCH_OPTION (mmso), FALSE);
+
+ toggle = ALSA_TOGGLE (mms);
+
+ /* For toggles the 0/1 value is stored as the switch option id */
+ value = alsa_switch_option_get_id (ALSA_SWITCH_OPTION (mmso));
+ if G_UNLIKELY (value != 0 && value != 1) {
+ g_warn_if_reached ();
+ return FALSE;
+ }
+
+ if (toggle->priv->type == ALSA_TOGGLE_CAPTURE)
+ ret = snd_mixer_selem_set_capture_switch_all (toggle->priv->element, value);
+ else
+ ret = snd_mixer_selem_set_playback_switch_all (toggle->priv->element, value);
+
+ if (ret < 0) {
+ g_warning ("Failed to set value of toggle %s: %s",
+ snd_mixer_selem_get_name (toggle->priv->element),
+ snd_strerror (ret));
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static snd_mixer_elem_t *
+alsa_toggle_get_snd_element (AlsaElement *element)
+{
+ g_return_val_if_fail (ALSA_IS_TOGGLE (element), NULL);
+
+ return ALSA_TOGGLE (element)->priv->element;
+}
+
+static void
+alsa_toggle_set_snd_element (AlsaElement *element, snd_mixer_elem_t *el)
+{
+ g_return_if_fail (ALSA_IS_TOGGLE (element));
+ g_return_if_fail (el != NULL);
+
+ ALSA_TOGGLE (element)->priv->element = el;
+}
+
+static gboolean
+alsa_toggle_load (AlsaElement *element)
+{
+ AlsaToggle *toggle;
+ gint value;
+ gint ret;
+ snd_mixer_selem_channel_id_t c;
+
+ toggle = ALSA_TOGGLE (element);
+
+ /* When reading the first time we try all the channels, otherwise only the
+ * ones which returned success before */
+ if (toggle->priv->channel_mask == 0) {
+ for (c = 0; c < SND_MIXER_SCHN_LAST; c++) {
+ if (toggle->priv->type == ALSA_TOGGLE_CAPTURE)
+ ret = snd_mixer_selem_get_capture_switch (toggle->priv->element,
+ c,
+ &value);
+ else
+ ret = snd_mixer_selem_get_playback_switch (toggle->priv->element,
+ c,
+ &value);
+
+ /* The active enum option is set per-channel, so when reading it the
+ * first time, create a mask of all channels for which we read the
+ * value successfully */
+ if (ret == 0)
+ toggle->priv->channel_mask |= 1 << c;
+ }
+
+ /* The last ALSA call might have failed, but it doesn't matter if we have
+ * a channel mask */
+ if (toggle->priv->channel_mask > 0)
+ ret = 0;
+ } else {
+ for (c = 0; !(toggle->priv->channel_mask & (1 << c)); c++)
+ ;
+
+ /* When not reading the mask, the first usable channel is enough, we don't
+ * support per-channel selections anyway */
+ if (toggle->priv->type == ALSA_TOGGLE_CAPTURE)
+ ret = snd_mixer_selem_get_capture_switch (toggle->priv->element,
+ c,
+ &value);
+ else
+ ret = snd_mixer_selem_get_playback_switch (toggle->priv->element,
+ c,
+ &value);
+ }
+
+ if (ret == 0) {
+ MateMixerSwitchOption *active;
+
+ if (value > 0)
+ active = mate_mixer_toggle_get_state_option (MATE_MIXER_TOGGLE (toggle), TRUE);
+ else
+ active = mate_mixer_toggle_get_state_option (MATE_MIXER_TOGGLE (toggle), FALSE);
+
+ _mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (toggle), active);
+
+ return TRUE;
+ }
+
+ g_warning ("Failed to read state of toggle %s: %s",
+ snd_mixer_selem_get_name (toggle->priv->element),
+ snd_strerror (ret));
+
+ return FALSE;
+}
diff --git a/backends/alsa/alsa-toggle.h b/backends/alsa/alsa-toggle.h
new file mode 100644
index 0000000..d9c083b
--- /dev/null
+++ b/backends/alsa/alsa-toggle.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2014 Michal Ratajsky <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ALSA_TOGGLE_H
+#define ALSA_TOGGLE_H
+
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+
+#include "alsa-switch-option.h"
+
+G_BEGIN_DECLS
+
+typedef enum {
+ ALSA_TOGGLE_CAPTURE,
+ ALSA_TOGGLE_PLAYBACK
+} AlsaToggleType;
+
+#define ALSA_TYPE_TOGGLE \
+ (alsa_toggle_get_type ())
+#define ALSA_TOGGLE(o) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((o), ALSA_TYPE_TOGGLE, AlsaToggle))
+#define ALSA_IS_TOGGLE(o) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((o), ALSA_TYPE_TOGGLE))
+#define ALSA_TOGGLE_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_CAST ((k), ALSA_TYPE_TOGGLE, AlsaToggleClass))
+#define ALSA_IS_TOGGLE_CLASS(k) \
+ (G_TYPE_CHECK_CLASS_TYPE ((k), ALSA_TYPE_TOGGLE))
+#define ALSA_TOGGLE_GET_CLASS(o) \
+ (G_TYPE_INSTANCE_GET_CLASS ((o), ALSA_TYPE_TOGGLE, AlsaToggleClass))
+
+typedef struct _AlsaToggle AlsaToggle;
+typedef struct _AlsaToggleClass AlsaToggleClass;
+typedef struct _AlsaTogglePrivate AlsaTogglePrivate;
+
+struct _AlsaToggle
+{
+ MateMixerToggle parent;
+
+ /*< private >*/
+ AlsaTogglePrivate *priv;
+};
+
+struct _AlsaToggleClass
+{
+ MateMixerToggleClass parent_class;
+};
+
+GType alsa_toggle_get_type (void) G_GNUC_CONST;
+
+AlsaToggle *alsa_toggle_new (const gchar *name,
+ const gchar *label,
+ AlsaToggleType type,
+ AlsaSwitchOption *on,
+ AlsaSwitchOption *off);
+
+G_END_DECLS
+
+#endif /* ALSA_TOGGLE_H */