gstreamer/sys/oss4/oss4-mixer-enum.c
Julien Moutte b33c37c256 sys/oss4/: Fix arguments format in debug statements.
Original commit message from CVS:
2008-04-11  Julien Moutte  <julien@fluendo.com>

* sys/oss4/oss4-mixer-enum.c:
(gst_oss4_mixer_enum_get_values_locked):
* sys/oss4/oss4-source.c: (gst_oss4_source_delay): Fix arguments
format in debug statements.
2010-05-11 19:02:53 +01:00

269 lines
7.4 KiB
C

/* GStreamer OSS4 mixer enumeration control
* Copyright (C) 2007-2008 Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* An 'enum' in gnome-volume-control / GstMixer is represented by a
* GstMixerOptions object
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst-i18n-plugin.h>
#define NO_LEGACY_MIXER
#include "oss4-mixer.h"
#include "oss4-mixer-enum.h"
#include "oss4-soundcard.h"
GST_DEBUG_CATEGORY_EXTERN (oss4mixer_debug);
#define GST_CAT_DEFAULT oss4mixer_debug
static GList *gst_oss4_mixer_enum_get_values (GstMixerOptions * options);
/* GstMixerTrack is a plain GObject, so let's just use the GLib macro here */
G_DEFINE_TYPE (GstOss4MixerEnum, gst_oss4_mixer_enum, GST_TYPE_MIXER_OPTIONS);
static void
gst_oss4_mixer_enum_init (GstOss4MixerEnum * e)
{
e->need_update = TRUE;
}
static void
gst_oss4_mixer_enum_dispose (GObject * obj)
{
GstMixerOptions *options = GST_MIXER_OPTIONS (obj);
/* our list is a flat list with constant strings, but the GstMixerOptions
* dispose will try to g_free the contained strings, so clean up the list
* before chaining up to GstMixerOptions */
g_list_free (options->values);
options->values = NULL;
G_OBJECT_CLASS (gst_oss4_mixer_enum_parent_class)->dispose (obj);
}
static void
gst_oss4_mixer_enum_class_init (GstOss4MixerEnumClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstMixerOptionsClass *mixeroptions_class = (GstMixerOptionsClass *) klass;
gobject_class->dispose = gst_oss4_mixer_enum_dispose;
mixeroptions_class->get_values = gst_oss4_mixer_enum_get_values;
}
static GList *
gst_oss4_mixer_enum_get_values_locked (GstMixerOptions * options)
{
GstOss4MixerEnum *e = GST_OSS4_MIXER_ENUM_CAST (options);
GList *oldlist, *list = NULL;
int i;
/* if current list of values is empty, update/re-check in any case */
if (!e->need_update && options->values != NULL)
return options->values;
GST_LOG_OBJECT (e, "updating available values for %s", e->mc->mixext.extname);
for (i = 0; i < e->mc->mixext.maxvalue; ++i) {
const gchar *s;
s = g_quark_to_string (e->mc->enum_vals[i]);
if (MIXEXT_ENUM_IS_AVAILABLE (e->mc->mixext, i)) {
GST_LOG_OBJECT (e, "option '%s' is available", s);
list = g_list_prepend (list, (gpointer) s);
} else {
GST_LOG_OBJECT (e, "option '%s' is currently not available", s);
}
}
list = g_list_reverse (list);
/* this is not thread-safe, but then the entire GstMixer API isn't really,
* since we return foo->list and not a copy and don't take any locks, so
* not much we can do here but pray; we're usually either called from _new()
* or from within _get_values() though, so it should be okay. We could use
* atomic ops here, but I'm not sure how much more that really buys us.*/
oldlist = options->values; /* keep window small */
options->values = list;
g_list_free (oldlist);
e->need_update = FALSE;
return options->values;
}
static GList *
gst_oss4_mixer_enum_get_values (GstMixerOptions * options)
{
GstOss4MixerEnum *e = GST_OSS4_MIXER_ENUM (options);
GList *list;
/* we take the lock here mostly to serialise ioctls with the watch thread */
GST_OBJECT_LOCK (e->mixer);
list = gst_oss4_mixer_enum_get_values_locked (options);
GST_OBJECT_UNLOCK (e->mixer);
return list;
}
static const gchar *
gst_oss4_mixer_enum_get_current_value (GstOss4MixerEnum * e)
{
const gchar *cur_val = NULL;
if (e->mc->enum_vals != NULL && e->mc->last_val < e->mc->mixext.maxvalue) {
cur_val = g_quark_to_string (e->mc->enum_vals[e->mc->last_val]);
}
return cur_val;
}
static gboolean
gst_oss4_mixer_enum_update_current (GstOss4MixerEnum * e)
{
int cur = -1;
if (!gst_oss4_mixer_get_control_val (e->mixer, e->mc, &cur))
return FALSE;
if (cur < 0 || cur >= e->mc->mixext.maxvalue) {
GST_WARNING_OBJECT (e, "read value %d out of bounds [0-%d]", cur,
e->mc->mixext.maxvalue - 1);
e->mc->last_val = 0;
return FALSE;
}
return TRUE;
}
gboolean
gst_oss4_mixer_enum_set_option (GstOss4MixerEnum * e, const gchar * value)
{
GQuark q;
int i;
q = g_quark_try_string (value);
if (q == 0) {
GST_WARNING_OBJECT (e, "unknown option '%s'", value);
return FALSE;
}
for (i = 0; i < e->mc->mixext.maxvalue; ++i) {
if (q == e->mc->enum_vals[i])
break;
}
if (i >= e->mc->mixext.maxvalue) {
GST_WARNING_OBJECT (e, "option '%s' is not valid for this control", value);
return FALSE;
}
GST_LOG_OBJECT (e, "option '%s' = %d", value, i);
if (!MIXEXT_ENUM_IS_AVAILABLE (e->mc->mixext, i)) {
GST_WARNING_OBJECT (e, "option '%s' is not selectable currently", value);
return FALSE;
}
if (!gst_oss4_mixer_set_control_val (e->mixer, e->mc, i)) {
GST_WARNING_OBJECT (e, "could not set option '%s' (%d)", value, i);
return FALSE;
}
/* and re-read current value with sanity checks (or could just assign here) */
gst_oss4_mixer_enum_update_current (e);
return TRUE;
}
const gchar *
gst_oss4_mixer_enum_get_option (GstOss4MixerEnum * e)
{
const gchar *cur_str = NULL;
if (!gst_oss4_mixer_enum_update_current (e)) {
GST_WARNING_OBJECT (e, "failed to read current value");
return NULL;
}
cur_str = gst_oss4_mixer_enum_get_current_value (e);
GST_LOG_OBJECT (e, "%s (%d)", GST_STR_NULL (cur_str), e->mc->last_val);
return cur_str;
}
GstMixerTrack *
gst_oss4_mixer_enum_new (GstOss4Mixer * mixer, GstOss4MixerControl * mc)
{
GstOss4MixerEnum *e;
GstMixerTrack *track;
e = g_object_new (GST_TYPE_OSS4_MIXER_ENUM, "untranslated-label",
mc->mixext.extname, NULL);
e->mixer = mixer;
e->mc = mc;
track = GST_MIXER_TRACK (e);
/* caller will set track->label and track->flags */
track->num_channels = 0;
track->min_volume = 0;
track->max_volume = 0;
(void) gst_oss4_mixer_enum_get_values_locked (GST_MIXER_OPTIONS (track));
if (!gst_oss4_mixer_enum_update_current (e)) {
GST_WARNING_OBJECT (track, "failed to read current value, returning NULL");
g_object_unref (track);
track = NULL;
}
GST_LOG_OBJECT (e, "current value: %d (%s)", e->mc->last_val,
gst_oss4_mixer_enum_get_current_value (e));
return track;
}
/* This is called from the watch thread */
void
gst_oss4_mixer_enum_process_change_unlocked (GstMixerTrack * track)
{
GstOss4MixerEnum *e = GST_OSS4_MIXER_ENUM_CAST (track);
gchar *cur;
if (!e->mc->changed && !e->mc->list_changed)
return;
if (e->mc->list_changed) {
gst_mixer_options_list_changed (GST_MIXER (e->mixer),
GST_MIXER_OPTIONS (e));
}
GST_OBJECT_LOCK (e->mixer);
cur = (gchar *) gst_oss4_mixer_enum_get_current_value (e);
GST_OBJECT_UNLOCK (e->mixer);
gst_mixer_option_changed (GST_MIXER (e->mixer), GST_MIXER_OPTIONS (e), cur);
}