1 files changed, 273 insertions, 0 deletions
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;
+}