diff options
Diffstat (limited to 'backends/oss/oss-switch.c')
| -rw-r--r-- | backends/oss/oss-switch.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/backends/oss/oss-switch.c b/backends/oss/oss-switch.c new file mode 100644 index 0000000..b138051 --- /dev/null +++ b/backends/oss/oss-switch.c @@ -0,0 +1,203 @@ +/* + * 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; +} |