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-rw-r--r--backends/oss/oss-switch.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/backends/oss/oss-switch.c b/backends/oss/oss-switch.c
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+/*
+ * 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 <errno.h>
+#include <glib.h>
+#include <glib-object.h>
+#include <libmatemixer/matemixer.h>
+#include <libmatemixer/matemixer-private.h>
+
+#include "oss-common.h"
+#include "oss-switch.h"
+#include "oss-switch-option.h"
+
+struct _OssSwitchPrivate
+{
+ gint fd;
+ GList *options;
+};
+
+static void oss_switch_class_init (OssSwitchClass *klass);
+static void oss_switch_init (OssSwitch *swtch);
+static void oss_switch_dispose (GObject *object);
+static void oss_switch_finalize (GObject *object);
+
+G_DEFINE_TYPE (OssSwitch, oss_switch, MATE_MIXER_TYPE_SWITCH)
+
+static gboolean oss_switch_set_active_option (MateMixerSwitch *mms,
+ MateMixerSwitchOption *mmso);
+
+static const GList *oss_switch_list_options (MateMixerSwitch *mms);
+
+static void
+oss_switch_class_init (OssSwitchClass *klass)
+{
+ GObjectClass *object_class;
+ MateMixerSwitchClass *switch_class;
+
+ object_class = G_OBJECT_CLASS (klass);
+ object_class->dispose = oss_switch_dispose;
+ object_class->finalize = oss_switch_finalize;
+
+ switch_class = MATE_MIXER_SWITCH_CLASS (klass);
+ switch_class->set_active_option = oss_switch_set_active_option;
+ switch_class->list_options = oss_switch_list_options;
+
+ g_type_class_add_private (G_OBJECT_CLASS (klass), sizeof (OssSwitchPrivate));
+}
+
+static void
+oss_switch_init (OssSwitch *swtch)
+{
+ swtch->priv = G_TYPE_INSTANCE_GET_PRIVATE (swtch,
+ OSS_TYPE_SWITCH,
+ OssSwitchPrivate);
+}
+
+static void
+oss_switch_dispose (GObject *object)
+{
+ OssSwitch *swtch;
+
+ swtch = OSS_SWITCH (object);
+
+ if (swtch->priv->options != NULL) {
+ g_list_free_full (swtch->priv->options, g_object_unref);
+ swtch->priv->options = NULL;
+ }
+
+ G_OBJECT_CLASS (oss_switch_parent_class)->dispose (object);
+}
+
+static void
+oss_switch_finalize (GObject *object)
+{
+ OssSwitch *swtch;
+
+ swtch = OSS_SWITCH (object);
+
+ if (swtch->priv->fd != -1)
+ close (swtch->priv->fd);
+
+ G_OBJECT_CLASS (oss_switch_parent_class)->finalize (object);
+}
+
+OssSwitch *
+oss_switch_new (const gchar *name,
+ const gchar *label,
+ gint fd,
+ GList *options)
+{
+ OssSwitch *swtch;
+
+ swtch = g_object_new (OSS_TYPE_SWITCH,
+ "name", name,
+ "label", label,
+ "flags", MATE_MIXER_SWITCH_ALLOWS_NO_ACTIVE_OPTION,
+ "role", MATE_MIXER_SWITCH_ROLE_PORT,
+ NULL);
+
+ /* Takes ownership of options */
+ swtch->priv->fd = dup (fd);
+ swtch->priv->options = options;
+
+ return swtch;
+}
+
+void
+oss_switch_load (OssSwitch *swtch)
+{
+ GList *list;
+ gint recsrc;
+ gint ret;
+
+ g_return_if_fail (OSS_IS_SWITCH (swtch));
+
+ if G_UNLIKELY (swtch->priv->fd == -1)
+ return;
+
+ ret = ioctl (swtch->priv->fd, MIXER_READ (SOUND_MIXER_RECSRC), &recsrc);
+ if (ret == -1)
+ return;
+ if (recsrc == 0) {
+ _mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (swtch), NULL);
+ return;
+ }
+
+ list = swtch->priv->options;
+ while (list != NULL) {
+ OssSwitchOption *option = OSS_SWITCH_OPTION (list->data);
+ gint devnum = oss_switch_option_get_devnum (option);
+
+ /* Mark the selected option when we find it */
+ if (recsrc & (1 << devnum)) {
+ _mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (swtch),
+ MATE_MIXER_SWITCH_OPTION (option));
+ return;
+ }
+ list = list->next;
+ }
+
+ g_warning ("Unknown active option of switch %s",
+ mate_mixer_switch_get_name (MATE_MIXER_SWITCH (swtch)));
+}
+
+void
+oss_switch_close (OssSwitch *swtch)
+{
+ g_return_if_fail (OSS_IS_SWITCH (swtch));
+
+ if (swtch->priv->fd == -1)
+ return;
+
+ close (swtch->priv->fd);
+ swtch->priv->fd = -1;
+}
+
+static gboolean
+oss_switch_set_active_option (MateMixerSwitch *mms, MateMixerSwitchOption *mmso)
+{
+ OssSwitch *swtch;
+ gint ret;
+ gint recsrc;
+ gint devnum;
+
+ g_return_val_if_fail (OSS_IS_SWITCH (mms), FALSE);
+ g_return_val_if_fail (OSS_IS_SWITCH_OPTION (mmso), FALSE);
+
+ swtch = OSS_SWITCH (mms);
+
+ if G_UNLIKELY (swtch->priv->fd == -1)
+ return FALSE;
+
+ devnum = oss_switch_option_get_devnum (OSS_SWITCH_OPTION (mmso));
+ recsrc = 1 << devnum;
+
+ ret = ioctl (swtch->priv->fd, MIXER_WRITE (SOUND_MIXER_RECSRC), &recsrc);
+ if (ret == -1)
+ return FALSE;
+
+ return TRUE;
+}
+
+static const GList *
+oss_switch_list_options (MateMixerSwitch *mms)
+{
+ g_return_val_if_fail (OSS_IS_SWITCH (mms), NULL);
+
+ return OSS_SWITCH (mms)->priv->options;
+}