diff options
Diffstat (limited to 'backends/oss/oss-switch.c')
| -rw-r--r-- | backends/oss/oss-switch.c | 113 |
1 files changed, 86 insertions, 27 deletions
diff --git a/backends/oss/oss-switch.c b/backends/oss/oss-switch.c index b138051..8e32281 100644 --- a/backends/oss/oss-switch.c +++ b/backends/oss/oss-switch.c @@ -38,10 +38,12 @@ 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 gboolean oss_switch_set_active_option (MateMixerSwitch *mms, + MateMixerSwitchOption *mmso); -static const GList *oss_switch_list_options (MateMixerSwitch *mms); +static const GList * oss_switch_list_options (MateMixerSwitch *mms); + +static OssSwitchOption *choose_default_option (OssSwitch *swtch); static void oss_switch_class_init (OssSwitchClass *klass) @@ -104,10 +106,14 @@ oss_switch_new (const gchar *name, { OssSwitch *swtch; + g_return_val_if_fail (name != NULL, NULL); + g_return_val_if_fail (label != NULL, NULL); + g_return_val_if_fail (fd != -1, NULL); + g_return_val_if_fail (options != NULL, NULL); + 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); @@ -121,39 +127,70 @@ oss_switch_new (const gchar *name, void oss_switch_load (OssSwitch *swtch) { - GList *list; - gint recsrc; - gint ret; + OssSwitchOption *option; + gint recsrc; + gint devnum; + gint ret; g_return_if_fail (OSS_IS_SWITCH (swtch)); if G_UNLIKELY (swtch->priv->fd == -1) return; + /* Recsrc contains a bitmask of currently enabled recording sources */ 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; + if (recsrc != 0) { + GList *list = swtch->priv->options; + + /* Find out which option is currently selected */ + while (list != NULL) { + gint devnum; + + option = OSS_SWITCH_OPTION (list->data); + devnum = oss_switch_option_get_devnum (option); + + if (recsrc & (1 << devnum)) { + /* It is possible that some hardware might allow and have more recording + * sources active at the same time, but we only support one active + * source at a time */ + _mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (swtch), + MATE_MIXER_SWITCH_OPTION (option)); + return; + } + list = list->next; } - list = list->next; + + g_debug ("Switch %s has unknown device %d as the active option", + mate_mixer_switch_get_name (MATE_MIXER_SWITCH (swtch)), + devnum); + + /* OSS shouldn't let a non-record device be selected, let's step in and select + * something reasonable instead... */ + } else { + g_debug ("Switch %s has no active device", + mate_mixer_switch_get_name (MATE_MIXER_SWITCH (swtch))); + + /* According to the OSS Programmer's Guide, if the recsrc value is 0, the + * microphone will be selected implicitly. + * Let's not assume that's true everywhere and select something explicitly... */ } - g_warning ("Unknown active option of switch %s", - mate_mixer_switch_get_name (MATE_MIXER_SWITCH (swtch))); + option = choose_default_option (swtch); + + g_debug ("Selecting default device %s as active for switch %s", + mate_mixer_switch_option_get_name (MATE_MIXER_SWITCH_OPTION (option)), + mate_mixer_switch_get_name (MATE_MIXER_SWITCH (swtch))); + + if (mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (swtch), + MATE_MIXER_SWITCH_OPTION (option)) == FALSE) { + g_debug ("Failed to set the default device, assuming it is selected anyway"); + + _mate_mixer_switch_set_active_option (MATE_MIXER_SWITCH (swtch), + MATE_MIXER_SWITCH_OPTION (option)); + } } void @@ -174,7 +211,6 @@ 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); @@ -184,8 +220,7 @@ oss_switch_set_active_option (MateMixerSwitch *mms, MateMixerSwitchOption *mmso) if G_UNLIKELY (swtch->priv->fd == -1) return FALSE; - devnum = oss_switch_option_get_devnum (OSS_SWITCH_OPTION (mmso)); - recsrc = 1 << devnum; + recsrc = 1 << oss_switch_option_get_devnum (OSS_SWITCH_OPTION (mmso)); ret = ioctl (swtch->priv->fd, MIXER_WRITE (SOUND_MIXER_RECSRC), &recsrc); if (ret == -1) @@ -201,3 +236,27 @@ oss_switch_list_options (MateMixerSwitch *mms) return OSS_SWITCH (mms)->priv->options; } + +#define OSS_SWITCH_PREFERRED_DEFAULT_DEVNUM 7 /* Microphone */ + +static OssSwitchOption * +choose_default_option (OssSwitch *swtch) +{ + GList *list = swtch->priv->options; + + /* Search for the preferred device */ + while (list != NULL) { + OssSwitchOption *option; + gint devnum; + + option = OSS_SWITCH_OPTION (list->data); + devnum = oss_switch_option_get_devnum (option); + + if (devnum == OSS_SWITCH_PREFERRED_DEFAULT_DEVNUM) + return option; + + list = list->next; + } + /* If the preferred device is not present, use the first available one */ + return OSS_SWITCH_OPTION (swtch->priv->options->data); +} |