Add ALSA, improve OSS and remove OSS4

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;
+}