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972631ae6d
"Low" etc. are quality settings here (e.g. for the internal resampler). Some day when we use GLib's i18n functions we might want to use NC_() and g_dpgettext2() here instead of the comments. Fixes #555967.
1856 lines
54 KiB
C
1856 lines
54 KiB
C
/* GStreamer OSS4 mixer implementation
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* Copyright (C) 2007-2008 Tim-Philipp Müller <tim centricular net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with mixer library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-oss4mixer
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*
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* This element lets you adjust sound input and output levels with the
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* Open Sound System (OSS) version 4. It supports the GstMixer interface, which
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* can be used to obtain a list of available mixer tracks. Set the mixer
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* element to READY state before using the GstMixer interface on it.
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*
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* <refsect2>
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* <title>Example pipelines</title>
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* <para>
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* oss4mixer can't be used in a sensible way in gst-launch.
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* </para>
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* </refsect2>
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*
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* Since: 0.10.7
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*/
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/* Note: ioctl calls on the same open mixer device are serialised via
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* the object lock to make sure we don't do concurrent ioctls from two
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* different threads (e.g. app thread and mixer watch thread), since that
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* will probably confuse OSS. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <gst/interfaces/mixer.h>
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#include <gst/gst-i18n-plugin.h>
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#include <glib/gprintf.h>
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#define NO_LEGACY_MIXER
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#include "oss4-audio.h"
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#include "oss4-mixer.h"
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#include "oss4-mixer-enum.h"
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#include "oss4-mixer-slider.h"
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#include "oss4-mixer-switch.h"
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#include "oss4-property-probe.h"
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#include "oss4-soundcard.h"
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#define GST_OSS4_MIXER_WATCH_INTERVAL 500 /* in millisecs, ie. 0.5s */
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GST_DEBUG_CATEGORY_EXTERN (oss4mixer_debug);
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#define GST_CAT_DEFAULT oss4mixer_debug
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#define DEFAULT_DEVICE NULL
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#define DEFAULT_DEVICE_NAME NULL
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enum
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{
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PROP_0,
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PROP_DEVICE,
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PROP_DEVICE_NAME
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};
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static void gst_oss4_mixer_init_interfaces (GType type);
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GST_BOILERPLATE_FULL (GstOss4Mixer, gst_oss4_mixer, GstElement,
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GST_TYPE_ELEMENT, gst_oss4_mixer_init_interfaces);
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static GstStateChangeReturn gst_oss4_mixer_change_state (GstElement *
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element, GstStateChange transition);
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static void gst_oss4_mixer_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_oss4_mixer_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_oss4_mixer_finalize (GObject * object);
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static gboolean gst_oss4_mixer_open (GstOss4Mixer * mixer,
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gboolean silent_errors);
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static void gst_oss4_mixer_close (GstOss4Mixer * mixer);
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static gboolean gst_oss4_mixer_enum_control_update_enum_list (GstOss4Mixer * m,
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GstOss4MixerControl * mc);
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#ifndef GST_DISABLE_GST_DEBUG
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static const gchar *mixer_ext_type_get_name (gint type);
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static const gchar *mixer_ext_flags_get_string (gint flags);
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#endif
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static void
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gst_oss4_mixer_base_init (gpointer klass)
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{
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gst_element_class_set_details_simple (GST_ELEMENT_CLASS (klass),
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"OSS v4 Audio Mixer", "Generic/Audio",
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"Control sound input and output levels with OSS4",
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"Tim-Philipp Müller <tim centricular net>");
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}
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static void
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gst_oss4_mixer_class_init (GstOss4MixerClass * klass)
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{
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GstElementClass *element_class;
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GObjectClass *gobject_class;
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element_class = (GstElementClass *) klass;
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gobject_class = (GObjectClass *) klass;
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gobject_class->finalize = gst_oss4_mixer_finalize;
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gobject_class->set_property = gst_oss4_mixer_set_property;
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gobject_class->get_property = gst_oss4_mixer_get_property;
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/**
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* GstOss4Mixer:device
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*
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* OSS4 mixer device (e.g. /dev/oss/hdaudio0/mix0 or /dev/mixerN)
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*
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**/
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g_object_class_install_property (gobject_class, PROP_DEVICE,
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g_param_spec_string ("device", "Device",
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"OSS mixer device (e.g. /dev/oss/hdaudio0/mix0 or /dev/mixerN) "
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"(NULL = use first mixer device found)", DEFAULT_DEVICE,
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G_PARAM_READWRITE));
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/**
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* GstOss4Mixer:device-name
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*
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* Human-readable name of the sound device. May be NULL if the device is
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* not open (ie. when the mixer is in NULL state)
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*
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**/
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g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
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g_param_spec_string ("device-name", "Device name",
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"Human-readable name of the sound device", DEFAULT_DEVICE_NAME,
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G_PARAM_READABLE));
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element_class->change_state = GST_DEBUG_FUNCPTR (gst_oss4_mixer_change_state);
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}
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static void
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gst_oss4_mixer_finalize (GObject * obj)
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{
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GstOss4Mixer *mixer = GST_OSS4_MIXER (obj);
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g_free (mixer->device);
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G_OBJECT_CLASS (parent_class)->finalize (obj);
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}
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static void
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gst_oss4_mixer_reset (GstOss4Mixer * mixer)
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{
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mixer->fd = -1;
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mixer->need_update = TRUE;
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memset (&mixer->last_mixext, 0, sizeof (oss_mixext));
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}
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static void
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gst_oss4_mixer_init (GstOss4Mixer * mixer, GstOss4MixerClass * g_class)
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{
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mixer->device = g_strdup (DEFAULT_DEVICE);
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mixer->device_name = NULL;
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gst_oss4_mixer_reset (mixer);
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}
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static void
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gst_oss4_mixer_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstOss4Mixer *mixer = GST_OSS4_MIXER (object);
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switch (prop_id) {
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case PROP_DEVICE:
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GST_OBJECT_LOCK (mixer);
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if (!GST_OSS4_MIXER_IS_OPEN (mixer)) {
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g_free (mixer->device);
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mixer->device = g_value_dup_string (value);
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/* unset any cached device-name */
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g_free (mixer->device_name);
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mixer->device_name = NULL;
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} else {
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g_warning ("%s: can't change \"device\" property while mixer is open",
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GST_OBJECT_NAME (mixer));
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}
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GST_OBJECT_UNLOCK (mixer);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_oss4_mixer_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstOss4Mixer *mixer = GST_OSS4_MIXER (object);
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switch (prop_id) {
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case PROP_DEVICE:
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GST_OBJECT_LOCK (mixer);
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g_value_set_string (value, mixer->device);
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GST_OBJECT_UNLOCK (mixer);
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break;
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case PROP_DEVICE_NAME:
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GST_OBJECT_LOCK (mixer);
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/* If device is set, try to retrieve the name even if we're not open */
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if (mixer->fd == -1 && mixer->device != NULL) {
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if (gst_oss4_mixer_open (mixer, TRUE)) {
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g_value_set_string (value, mixer->device_name);
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gst_oss4_mixer_close (mixer);
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} else {
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g_value_set_string (value, mixer->device_name);
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}
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} else {
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g_value_set_string (value, mixer->device_name);
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}
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GST_OBJECT_UNLOCK (mixer);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static gboolean
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gst_oss4_mixer_open (GstOss4Mixer * mixer, gboolean silent_errors)
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{
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struct oss_mixerinfo mi = { 0, };
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gchar *device;
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g_return_val_if_fail (!GST_OSS4_MIXER_IS_OPEN (mixer), FALSE);
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if (mixer->device)
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device = g_strdup (mixer->device);
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else
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device = gst_oss4_audio_find_device (GST_OBJECT_CAST (mixer));
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/* desperate times, desperate measures */
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if (device == NULL)
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device = g_strdup ("/dev/mixer");
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GST_INFO_OBJECT (mixer, "Trying to open OSS4 mixer device '%s'", device);
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mixer->fd = open (device, O_RDWR, 0);
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if (mixer->fd < 0)
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goto open_failed;
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/* Make sure it's OSS4. If it's old OSS, let the old ossmixer handle it */
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if (!gst_oss4_audio_check_version (GST_OBJECT (mixer), mixer->fd))
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goto legacy_oss;
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GST_INFO_OBJECT (mixer, "Opened mixer device '%s', which is mixer %d",
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device, mi.dev);
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/* Get device name for currently open fd */
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mi.dev = -1;
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if (ioctl (mixer->fd, SNDCTL_MIXERINFO, &mi) == 0) {
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mixer->modify_counter = mi.modify_counter;
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if (mi.name[0] != '\0') {
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mixer->device_name = g_strdup (mi.name);
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}
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} else {
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mixer->modify_counter = 0;
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}
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if (mixer->device_name == NULL) {
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mixer->device_name = g_strdup ("Unknown");
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}
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GST_INFO_OBJECT (mixer, "device name = '%s'", mixer->device_name);
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mixer->open_device = device;
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return TRUE;
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/* ERRORS */
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open_failed:
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{
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if (!silent_errors) {
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GST_ELEMENT_ERROR (mixer, RESOURCE, OPEN_READ_WRITE,
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(_("Could not open audio device for mixer control handling.")),
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GST_ERROR_SYSTEM);
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} else {
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GST_DEBUG_OBJECT (mixer, "open failed: %s (ignoring errors)",
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g_strerror (errno));
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}
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g_free (device);
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return FALSE;
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}
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legacy_oss:
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{
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gst_oss4_mixer_close (mixer);
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if (!silent_errors) {
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GST_ELEMENT_ERROR (mixer, RESOURCE, OPEN_READ_WRITE,
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(_("Could not open audio device for mixer control handling. "
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"This version of the Open Sound System is not supported by this "
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"element.")), ("Try the 'ossmixer' element instead"));
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} else {
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GST_DEBUG_OBJECT (mixer, "open failed: legacy oss (ignoring errors)");
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}
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g_free (device);
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return FALSE;
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}
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}
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static void
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gst_oss4_mixer_control_free (GstOss4MixerControl * mc)
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{
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g_list_free (mc->children);
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g_list_free (mc->mute_group);
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g_free (mc->enum_vals);
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memset (mc, 0, sizeof (GstOss4MixerControl));
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g_free (mc);
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}
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static void
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gst_oss4_mixer_free_tracks (GstOss4Mixer * mixer)
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{
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g_list_foreach (mixer->tracks, (GFunc) g_object_unref, NULL);
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g_list_free (mixer->tracks);
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mixer->tracks = NULL;
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g_list_foreach (mixer->controls, (GFunc) gst_oss4_mixer_control_free, NULL);
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g_list_free (mixer->controls);
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mixer->controls = NULL;
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}
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static void
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gst_oss4_mixer_close (GstOss4Mixer * mixer)
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{
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g_free (mixer->device_name);
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mixer->device_name = NULL;
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g_free (mixer->open_device);
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mixer->open_device = NULL;
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gst_oss4_mixer_free_tracks (mixer);
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if (mixer->fd != -1) {
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close (mixer->fd);
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mixer->fd = -1;
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}
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gst_oss4_mixer_reset (mixer);
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}
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static void
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gst_oss4_mixer_watch_process_changes (GstOss4Mixer * mixer)
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{
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GList *c, *t, *tracks = NULL;
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GST_INFO_OBJECT (mixer, "mixer interface or control changed");
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/* this is all with the mixer object lock held */
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/* we go through the list backwards so we can bail out faster when the entire
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* interface needs to be rebuilt */
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for (c = g_list_last (mixer->controls); c != NULL; c = c->prev) {
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GstOss4MixerControl *mc = c->data;
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oss_mixer_value ossval = { 0, };
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mc->changed = FALSE;
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mc->list_changed = FALSE;
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/* not interested in controls we don't expose in the mixer interface */
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if (!mc->used)
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continue;
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/* don't try to read a value from controls that don't have one */
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if (mc->mixext.type == MIXT_DEVROOT || mc->mixext.type == MIXT_GROUP)
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continue;
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/* is this an enum control whose list may change? */
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if (mc->mixext.type == MIXT_ENUM && mc->enum_version != 0) {
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if (gst_oss4_mixer_enum_control_update_enum_list (mixer, mc))
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mc->list_changed = TRUE;
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}
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ossval.dev = mc->mixext.dev;
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ossval.ctrl = mc->mixext.ctrl;
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ossval.timestamp = mc->mixext.timestamp;
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if (ioctl (mixer->fd, SNDCTL_MIX_READ, &ossval) == -1) {
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if (errno == EIDRM || errno == EFAULT) {
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GST_DEBUG ("%s has disappeared", mc->mixext.extname);
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goto mixer_changed;
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}
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GST_WARNING_OBJECT (mixer, "MIX_READ failed: %s", g_strerror (errno));
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/* just ignore, move on to next one */
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continue;
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}
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if (ossval.value == mc->last_val) { /* no change */
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/* GST_LOG_OBJECT (mixer, "%s hasn't changed", mc->mixext.extname); */
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continue;
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}
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mc->last_val = ossval.value;
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GST_LOG_OBJECT (mixer, "%s changed value to %u 0x%08x",
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mc->mixext.extname, ossval.value, ossval.value);
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mc->changed = TRUE;
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}
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/* copy list and take track refs, so we can safely drop the object lock,
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* which we need to do to be able to post messages on the bus */
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tracks = g_list_copy (mixer->tracks);
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g_list_foreach (tracks, (GFunc) g_object_ref, NULL);
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GST_OBJECT_UNLOCK (mixer);
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/* since we don't know (or want to know exactly) which controls belong to
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* which track, we just go through the tracks one-by-one now and make them
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* check themselves if any of their controls have changed and which messages
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* to post on the bus as a result */
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for (t = tracks; t != NULL; t = t->next) {
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GstMixerTrack *track = t->data;
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if (GST_IS_OSS4_MIXER_SLIDER (track)) {
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gst_oss4_mixer_slider_process_change_unlocked (track);
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} else if (GST_IS_OSS4_MIXER_SWITCH (track)) {
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gst_oss4_mixer_switch_process_change_unlocked (track);
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} else if (GST_IS_OSS4_MIXER_ENUM (track)) {
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gst_oss4_mixer_enum_process_change_unlocked (track);
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}
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g_object_unref (track);
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}
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g_list_free (tracks);
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GST_OBJECT_LOCK (mixer);
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return;
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|
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mixer_changed:
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{
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GST_OBJECT_UNLOCK (mixer);
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gst_mixer_mixer_changed (GST_MIXER (mixer));
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GST_OBJECT_LOCK (mixer);
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return;
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}
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}
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|
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/* This thread watches the mixer for changes in a somewhat inefficient way
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* (running an ioctl every half second or so). This is still better and
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* cheaper than apps polling all tracks for changes a few times a second
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* though. Needs more thought. There's probably (hopefully) a way to get
|
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* notifications via the fd directly somehow. */
|
|
static gpointer
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|
gst_oss4_mixer_watch_thread (gpointer thread_data)
|
|
{
|
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GstOss4Mixer *mixer = GST_OSS4_MIXER_CAST (thread_data);
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|
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GST_DEBUG_OBJECT (mixer, "watch thread running");
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|
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GST_OBJECT_LOCK (mixer);
|
|
while (!mixer->watch_shutdown) {
|
|
oss_mixerinfo mi = { 0, };
|
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GTimeVal tv;
|
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|
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mi.dev = -1;
|
|
if (ioctl (mixer->fd, SNDCTL_MIXERINFO, &mi) == 0) {
|
|
if (mixer->modify_counter != mi.modify_counter) {
|
|
/* GST_LOG ("processing changes"); */
|
|
gst_oss4_mixer_watch_process_changes (mixer);
|
|
mixer->modify_counter = mi.modify_counter;
|
|
} else {
|
|
/* GST_LOG ("no changes"); */
|
|
}
|
|
} else {
|
|
GST_WARNING_OBJECT (mixer, "MIXERINFO failed: %s", g_strerror (errno));
|
|
}
|
|
|
|
/* we could move the _get_current_time out of the loop and just do the
|
|
* add in ever iteration, which would be less exact, but who cares */
|
|
g_get_current_time (&tv);
|
|
g_time_val_add (&tv, GST_OSS4_MIXER_WATCH_INTERVAL * 1000);
|
|
(void) g_cond_timed_wait (mixer->watch_cond, GST_OBJECT_GET_LOCK (mixer),
|
|
&tv);
|
|
}
|
|
GST_OBJECT_UNLOCK (mixer);
|
|
|
|
GST_DEBUG_OBJECT (mixer, "watch thread done");
|
|
gst_object_unref (mixer);
|
|
return NULL;
|
|
}
|
|
|
|
/* call with object lock held */
|
|
static void
|
|
gst_oss4_mixer_wake_up_watch_task (GstOss4Mixer * mixer)
|
|
{
|
|
GST_LOG_OBJECT (mixer, "signalling watch thread to wake up");
|
|
g_cond_signal (mixer->watch_cond);
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_stop_watch_task (GstOss4Mixer * mixer)
|
|
{
|
|
if (mixer->watch_thread) {
|
|
GST_OBJECT_LOCK (mixer);
|
|
mixer->watch_shutdown = TRUE;
|
|
GST_LOG_OBJECT (mixer, "signalling watch thread to stop");
|
|
g_cond_signal (mixer->watch_cond);
|
|
GST_OBJECT_UNLOCK (mixer);
|
|
GST_LOG_OBJECT (mixer, "waiting for watch thread to join");
|
|
g_thread_join (mixer->watch_thread);
|
|
GST_DEBUG_OBJECT (mixer, "watch thread stopped");
|
|
mixer->watch_thread = NULL;
|
|
}
|
|
|
|
if (mixer->watch_cond) {
|
|
g_cond_free (mixer->watch_cond);
|
|
mixer->watch_cond = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_start_watch_task (GstOss4Mixer * mixer)
|
|
{
|
|
GError *err = NULL;
|
|
|
|
mixer->watch_cond = g_cond_new ();
|
|
mixer->watch_shutdown = FALSE;
|
|
|
|
mixer->watch_thread = g_thread_create (gst_oss4_mixer_watch_thread,
|
|
gst_object_ref (mixer), TRUE, &err);
|
|
|
|
if (mixer->watch_thread == NULL) {
|
|
GST_ERROR_OBJECT (mixer, "Could not create watch thread: %s", err->message);
|
|
g_cond_free (mixer->watch_cond);
|
|
mixer->watch_cond = NULL;
|
|
g_error_free (err);
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_oss4_mixer_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
GstOss4Mixer *mixer = GST_OSS4_MIXER (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (!gst_oss4_mixer_open (mixer, FALSE))
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
gst_oss4_mixer_start_watch_task (mixer);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
gst_oss4_mixer_stop_watch_task (mixer);
|
|
gst_oss4_mixer_close (mixer);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* === GstMixer interface === */
|
|
|
|
static inline gboolean
|
|
gst_oss4_mixer_contains_track (GstMixer * mixer, GstMixerTrack * track)
|
|
{
|
|
return (g_list_find (GST_OSS4_MIXER (mixer)->tracks, track) != NULL);
|
|
}
|
|
|
|
static inline gboolean
|
|
gst_oss4_mixer_contains_options (GstMixer * mixer, GstMixerOptions * options)
|
|
{
|
|
return (g_list_find (GST_OSS4_MIXER (mixer)->tracks, options) != NULL);
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_post_mixer_changed_msg (GstOss4Mixer * mixer)
|
|
{
|
|
/* only post mixer-changed message once */
|
|
if (!mixer->need_update) {
|
|
gst_mixer_mixer_changed (GST_MIXER (mixer));
|
|
mixer->need_update = TRUE;
|
|
}
|
|
}
|
|
|
|
/* call with mixer object lock held to serialise ioctl */
|
|
gboolean
|
|
gst_oss4_mixer_get_control_val (GstOss4Mixer * mixer, GstOss4MixerControl * mc,
|
|
int *val)
|
|
{
|
|
oss_mixer_value ossval = { 0, };
|
|
|
|
if (GST_OBJECT_TRYLOCK (mixer)) {
|
|
GST_ERROR ("must be called with mixer lock held");
|
|
GST_OBJECT_UNLOCK (mixer);
|
|
}
|
|
|
|
ossval.dev = mc->mixext.dev;
|
|
ossval.ctrl = mc->mixext.ctrl;
|
|
ossval.timestamp = mc->mixext.timestamp;
|
|
|
|
if (ioctl (mixer->fd, SNDCTL_MIX_READ, &ossval) == -1) {
|
|
if (errno == EIDRM) {
|
|
GST_DEBUG_OBJECT (mixer, "MIX_READ failed: mixer interface has changed");
|
|
gst_oss4_mixer_post_mixer_changed_msg (mixer);
|
|
} else {
|
|
GST_WARNING_OBJECT (mixer, "MIX_READ failed: %s", g_strerror (errno));
|
|
}
|
|
*val = 0;
|
|
mc->last_val = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
*val = ossval.value;
|
|
mc->last_val = ossval.value;
|
|
GST_LOG_OBJECT (mixer, "got value 0x%08x from %s)", *val, mc->mixext.extname);
|
|
return TRUE;
|
|
}
|
|
|
|
/* call with mixer object lock held to serialise ioctl */
|
|
gboolean
|
|
gst_oss4_mixer_set_control_val (GstOss4Mixer * mixer, GstOss4MixerControl * mc,
|
|
int val)
|
|
{
|
|
oss_mixer_value ossval = { 0, };
|
|
|
|
ossval.dev = mc->mixext.dev;
|
|
ossval.ctrl = mc->mixext.ctrl;
|
|
ossval.timestamp = mc->mixext.timestamp;
|
|
ossval.value = val;
|
|
|
|
if (GST_OBJECT_TRYLOCK (mixer)) {
|
|
GST_ERROR ("must be called with mixer lock held");
|
|
GST_OBJECT_UNLOCK (mixer);
|
|
}
|
|
|
|
if (ioctl (mixer->fd, SNDCTL_MIX_WRITE, &ossval) == -1) {
|
|
if (errno == EIDRM) {
|
|
GST_LOG_OBJECT (mixer, "MIX_WRITE failed: mixer interface has changed");
|
|
gst_oss4_mixer_post_mixer_changed_msg (mixer);
|
|
} else {
|
|
GST_WARNING_OBJECT (mixer, "MIX_WRITE failed: %s", g_strerror (errno));
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
mc->last_val = val;
|
|
GST_LOG_OBJECT (mixer, "set value 0x%08x on %s", val, mc->mixext.extname);
|
|
return TRUE;
|
|
}
|
|
|
|
#if 0
|
|
static gchar *
|
|
gst_oss4_mixer_control_get_pretty_name (GstOss4MixerControl * mc)
|
|
{
|
|
gchar *name;
|
|
|
|
const gchar *name, *u;
|
|
|
|
/* "The id field is the original name given by the driver when it called
|
|
* mixer_ext_create_control. This name can be used by fully featured GUI
|
|
* mixers. However this name should be downshifted and cut before the last
|
|
* underscore ("_") to get the proper name. For example mixer control name
|
|
* created as "MYDRV_MAINVOL" will become just "mainvol" after this
|
|
* transformation." */
|
|
name = mc->mixext.extname;
|
|
u = MAX (strrchr (name, '_'), strrchr (name, '.'));
|
|
if (u != NULL)
|
|
name = u + 1;
|
|
|
|
/* maybe capitalize the first letter? */
|
|
return g_ascii_strdown (name, -1);
|
|
/* the .id thing doesn't really seem to work right, ie. for some sliders
|
|
* it's just '-' so you have to use the name of the parent control etc.
|
|
* let's not use it for now, much too painful. */
|
|
if (g_str_has_prefix (mc->mixext.extname, "misc."))
|
|
name = g_strdup (mc->mixext.extname + 5);
|
|
else
|
|
name = g_strdup (mc->mixext.extname);
|
|
/* chop off trailing digit (only one for now) */
|
|
if (strlen (name) > 0 && g_ascii_isdigit (name[strlen (name) - 1]))
|
|
name[strlen (name) - 1] = '\0';
|
|
g_strdelimit (name, ".", ' ');
|
|
return name;
|
|
}
|
|
#endif
|
|
|
|
/* these translations are a bit ad-hoc and horribly incomplete; it is not
|
|
* really going to work this way with all the different chipsets and drivers.
|
|
* We also use these for translating option values. */
|
|
static struct
|
|
{
|
|
const gchar oss_name[32];
|
|
const gchar *label;
|
|
} labels[] = {
|
|
{
|
|
"volume", N_("Volume")}, {
|
|
"master", N_("Master")}, {
|
|
"front", N_("Front")}, {
|
|
"rear", N_("Rear")}, {
|
|
"headphones", N_("Headphones")}, {
|
|
"center", N_("Center")}, {
|
|
"lfe", N_("LFE")}, {
|
|
"surround", N_("Surround")}, {
|
|
"side", N_("Side")}, {
|
|
"speaker", N_("Built-in Speaker")}, {
|
|
"aux1-out", N_("AUX 1 Out")}, {
|
|
"aux2-out", N_("AUX 2 Out")}, {
|
|
"aux-out", N_("AUX Out")}, {
|
|
"bass", N_("Bass")}, {
|
|
"treble", N_("Treble")}, {
|
|
"3d-depth", N_("3D Depth")}, {
|
|
"3d-center", N_("3D Center")}, {
|
|
"3d-enhance", N_("3D Enhance")}, {
|
|
"phone", N_("Telephone")}, {
|
|
"mic", N_("Microphone")}, {
|
|
"line-out", N_("Line Out")}, {
|
|
"line-in", N_("Line In")}, {
|
|
"linein", N_("Line In")}, {
|
|
"cd", N_("Internal CD")}, {
|
|
"video", N_("Video In")}, {
|
|
"aux1-in", N_("AUX 1 In")}, {
|
|
"aux2-in", N_("AUX 2 In")}, {
|
|
"aux-in", N_("AUX In")}, {
|
|
"pcm", N_("PCM")}, {
|
|
"record-gain", N_("Record Gain")}, {
|
|
"igain", N_("Record Gain")}, {
|
|
"ogain", N_("Output Gain")}, {
|
|
"micboost", N_("Microphone Boost")}, {
|
|
"loopback", N_("Loopback")}, {
|
|
"diag", N_("Diagnostic")}, {
|
|
"loudness", N_("Bass Boost")}, {
|
|
"outputs", N_("Playback Ports")}, {
|
|
"input", N_("Input")}, {
|
|
"inputs", N_("Record Source")}, {
|
|
"record-source", N_("Record Source")}, {
|
|
"monitor-source", N_("Monitor Source")}, {
|
|
"beep", N_("Keyboard Beep")}, {
|
|
"monitor-gain", N_("Monitor")}, {
|
|
"stereo-simulate", N_("Simulate Stereo")}, {
|
|
"stereo", N_("Stereo")}, {
|
|
"multich", N_("Surround Sound")}, {
|
|
"mic-gain", N_("Microphone Gain")}, {
|
|
"speaker-source", N_("Speaker Source")}, {
|
|
"mic-source", N_("Microphone Source")}, {
|
|
"jack", N_("Jack")}, {
|
|
"center/lfe", N_("Center / LFE")}, {
|
|
"stereo-mix", N_("Stereo Mix")}, {
|
|
"mono-mix", N_("Mono Mix")}, {
|
|
"input-mix", N_("Input Mix")}, {
|
|
"spdif-in", N_("SPDIF In")}, {
|
|
"spdif-out", N_("SPDIF Out")}, {
|
|
"mic1", N_("Microphone 1")}, {
|
|
"mic2", N_("Microphone 2")}, {
|
|
"digital-out", N_("Digital Out")}, {
|
|
"digital-in", N_("Digital In")}, {
|
|
"hdmi", N_("HDMI")}, {
|
|
"modem", N_("Modem")}, {
|
|
"handset", N_("Handset")}, {
|
|
"other", N_("Other")}, {
|
|
"stereo", N_("Stereo")}, {
|
|
"none", N_("None")}, {
|
|
"on", N_("On")}, {
|
|
"off", N_("Off")}, {
|
|
"mute", N_("Mute")}, {
|
|
"fast", N_("Fast")}, {
|
|
/* TRANSLATORS: "Very Low" is a quality setting here */
|
|
"very-low", N_("Very Low")}, {
|
|
/* TRANSLATORS: "Low" is a quality setting here */
|
|
"low", N_("Low")}, {
|
|
/* TRANSLATORS: "Medium" is a quality setting here */
|
|
"medium", N_("Medium")}, {
|
|
/* TRANSLATORS: "High" is a quality setting here */
|
|
"high", N_("High")}, {
|
|
/* TRANSLATORS: "Very High" is a quality setting here */
|
|
"very-high", N_("Very High")}, {
|
|
"high+", N_("Very High")}, {
|
|
/* TRANSLATORS: "Production" is a quality setting here */
|
|
"production", N_("Production")}, {
|
|
"fp-mic", N_("Front Panel Microphone")}, {
|
|
"fp-linein", N_("Front Panel Line In")}, {
|
|
"fp-headphones", N_("Front Panel Headphones")}, {
|
|
"fp-lineout", N_("Front Panel Line Out")}, {
|
|
"green", N_("Green Connector")}, {
|
|
"pink", N_("Pink Connector")}, {
|
|
"blue", N_("Blue Connector")}, {
|
|
"white", N_("White Connector")}, {
|
|
"black", N_("Black Connector")}, {
|
|
"gray", N_("Gray Connector")}, {
|
|
"orange", N_("Orange Connector")}, {
|
|
"red", N_("Red Connector")}, {
|
|
"yellow", N_("Yellow Connector")}, {
|
|
"fp-green", N_("Green Front Panel Connector")}, {
|
|
"fp-pink", N_("Pink Front Panel Connector")}, {
|
|
"fp-blue", N_("Blue Front Panel Connector")}, {
|
|
"fp-white", N_("White Front Panel Connector")}, {
|
|
"fp-black", N_("Black Front Panel Connector")}, {
|
|
"fp-gray", N_("Gray Front Panel Connector")}, {
|
|
"fp-orange", N_("Orange Front Panel Connector")}, {
|
|
"fp-red", N_("Red Front Panel Connector")}, {
|
|
"fp-yellow", N_("Yellow Front Panel Connector")}, {
|
|
"spread", N_("Spread Output")}, {
|
|
"downmix", N_("Downmix")},
|
|
/* FIXME translate Audigy NX USB labels) */
|
|
/*
|
|
{ "rec.src", N_("Record Source") },
|
|
{ "output.mute", N_("Mute output") }
|
|
headph (Controller group)
|
|
headph.src (Enumeration control)
|
|
headph.mute (On/Off switch)
|
|
digital2 (Controller group)
|
|
digital2.src (Enumeration control)
|
|
digital2.mute (On/Off switch)
|
|
digital (Controller group)
|
|
digital.mute1 (On/Off switch)
|
|
digital.vol (Controller group)
|
|
digital.vol.front (Stereo slider (0-255))
|
|
digital.vol.surr (Stereo slider (0-255))
|
|
digital.vol.c/l (Stereo slider (0-255))
|
|
digital.vol.center (Stereo slider (0-255))
|
|
digital.mute2 (On/Off switch)
|
|
digital.vol (Stereo slider (0-255))
|
|
line (Controller group)
|
|
line.mute (On/Off switch)
|
|
line.vol (Stereo slider (0-255))
|
|
play-altset (Enumeration control)
|
|
rec-altset (Enumeration control)
|
|
*/
|
|
};
|
|
|
|
/* Decent i18n is pretty much impossible with OSS's way of providing us with
|
|
* mixer labels (and the fact that they are pretty much random), but that
|
|
* doesn't mean we shouldn't at least try. */
|
|
static gchar *
|
|
gst_oss4_mixer_control_get_translated_name (GstOss4MixerControl * mc)
|
|
{
|
|
gchar name[128] = { 0, };
|
|
gchar vmix_str[32] = { '\0', };
|
|
gchar *ptr;
|
|
int dummy, i;
|
|
int num = -1;
|
|
gboolean function_suffix = FALSE;
|
|
|
|
/* main virtual mixer controls (we hide the stream volumes) */
|
|
if (sscanf (mc->mixext.extname, "vmix%d-%32c", &dummy, vmix_str) == 2) {
|
|
if (strcmp (vmix_str, "src") == 0)
|
|
return g_strdup (_("Virtual Mixer Input"));
|
|
else if (strcmp (vmix_str, "vol") == 0)
|
|
return g_strdup (_("Virtual Mixer Output"));
|
|
else if (strcmp (vmix_str, "channels") == 0)
|
|
return g_strdup (_("Virtual Mixer Channels"));
|
|
}
|
|
|
|
g_strlcpy (name, mc->mixext.extname, sizeof (name));
|
|
|
|
/* we deal with either "connector." or "jack." */
|
|
if ((g_str_has_prefix (name, "connector.")) ||
|
|
(g_str_has_prefix (name, "jack."))) {
|
|
ptr = strchr (mc->mixext.extname, '.');
|
|
ptr++;
|
|
g_strlcpy (name, ptr, sizeof (name));
|
|
}
|
|
|
|
/* special handling for jack retasking suffixes */
|
|
if (g_str_has_suffix (name, ".function") || g_str_has_suffix (name, ".mode")) {
|
|
function_suffix = TRUE;
|
|
ptr = strrchr (name, '.');
|
|
*ptr = 0;
|
|
}
|
|
|
|
/* parse off trailing numbers */
|
|
i = strlen (name);
|
|
while ((i > 0) && (g_ascii_isdigit (name[i - 1]))) {
|
|
i--;
|
|
}
|
|
/* the check catches the case where the control name is just a number */
|
|
if ((i > 0) && (name[i] != '\0')) {
|
|
num = atoi (name + i);
|
|
name[i] = '\0';
|
|
}
|
|
|
|
/* look for a match, progressively skipping '.' delimited prefixes as we go */
|
|
ptr = name;
|
|
do {
|
|
if (*ptr == '.')
|
|
ptr++;
|
|
for (i = 0; i < G_N_ELEMENTS (labels); ++i) {
|
|
if (g_strcasecmp (ptr, labels[i].oss_name) == 0) {
|
|
g_strlcpy (name, _(labels[i].label), sizeof (name));
|
|
goto append_suffixes;
|
|
}
|
|
}
|
|
} while ((ptr = strchr (ptr, '.')) != NULL);
|
|
|
|
/* failing that, just replace periods with spaces */
|
|
g_strdelimit (name, ".", ' ');
|
|
|
|
append_suffixes:
|
|
if (num > -1) {
|
|
if (function_suffix) {
|
|
/* TRANSLATORS: name + number of a volume mixer control */
|
|
return g_strdup_printf (_("%s %d Function"), name, num);
|
|
} else {
|
|
return g_strdup_printf ("%s %d", name, num);
|
|
}
|
|
} else {
|
|
if (function_suffix) {
|
|
/* TRANSLATORS: name of a volume mixer control */
|
|
return g_strdup_printf (_("%s Function"), name);
|
|
} else {
|
|
return g_strdup (name);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const gchar *
|
|
gst_oss4_mixer_control_get_translated_option (const gchar * name)
|
|
{
|
|
int i;
|
|
for (i = 0; i < G_N_ELEMENTS (labels); ++i) {
|
|
if (g_strcasecmp (name, labels[i].oss_name) == 0) {
|
|
return _(labels[i].label);
|
|
}
|
|
}
|
|
return (name);
|
|
}
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
static const gchar *
|
|
mixer_ext_type_get_name (gint type)
|
|
{
|
|
switch (type) {
|
|
case MIXT_DEVROOT:
|
|
return "Device root entry";
|
|
case MIXT_GROUP:
|
|
return "Controller group";
|
|
case MIXT_ONOFF:
|
|
return "On/Off switch";
|
|
case MIXT_ENUM:
|
|
return "Enumeration control";
|
|
case MIXT_MONOSLIDER:
|
|
return "Mono slider (0-255)";
|
|
case MIXT_STEREOSLIDER:
|
|
return "Stereo slider (0-255)";
|
|
case MIXT_MESSAGE:
|
|
return "Textual message"; /* whatever this is */
|
|
case MIXT_MONOVU:
|
|
return "Mono VU meter value";
|
|
case MIXT_STEREOVU:
|
|
return "Stereo VU meter value";
|
|
case MIXT_MONOPEAK:
|
|
return "Mono VU meter peak value";
|
|
case MIXT_STEREOPEAK:
|
|
return "Stereo VU meter peak value";
|
|
case MIXT_RADIOGROUP:
|
|
return "Radio button group";
|
|
case MIXT_MARKER: /* Separator between normal and extension entries */
|
|
return "Separator";
|
|
case MIXT_VALUE:
|
|
return "Decimal value entry";
|
|
case MIXT_HEXVALUE:
|
|
return "Hex value entry";
|
|
case MIXT_SLIDER:
|
|
return "Mono slider (31-bit value range)";
|
|
case MIXT_3D:
|
|
return "3D"; /* what's this? */
|
|
case MIXT_MONOSLIDER16:
|
|
return "Mono slider (0-32767)";
|
|
case MIXT_STEREOSLIDER16:
|
|
return "Stereo slider (0-32767)";
|
|
case MIXT_MUTE:
|
|
return "Mute switch";
|
|
default:
|
|
break;
|
|
}
|
|
return "unknown";
|
|
}
|
|
#endif /* GST_DISABLE_GST_DEBUG */
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
static const gchar *
|
|
mixer_ext_flags_get_string (gint flags)
|
|
{
|
|
struct
|
|
{
|
|
gint flag;
|
|
gchar nick[16];
|
|
} all_flags[] = {
|
|
/* first the important ones */
|
|
{
|
|
MIXF_MAINVOL, "MAINVOL"}, {
|
|
MIXF_PCMVOL, "PCMVOL"}, {
|
|
MIXF_RECVOL, "RECVOL"}, {
|
|
MIXF_MONVOL, "MONVOL"}, {
|
|
MIXF_DESCR, "DESCR"},
|
|
/* now the rest in the right order */
|
|
{
|
|
MIXF_READABLE, "READABLE"}, {
|
|
MIXF_WRITEABLE, "WRITABLE"}, {
|
|
MIXF_POLL, "POLL"}, {
|
|
MIXF_HZ, "HZ"}, {
|
|
MIXF_STRING, "STRING"}, {
|
|
MIXF_DYNAMIC, "DYNAMIC"}, {
|
|
MIXF_OKFAIL, "OKFAIL"}, {
|
|
MIXF_FLAT, "FLAT"}, {
|
|
MIXF_LEGACY, "LEGACY"}, {
|
|
MIXF_CENTIBEL, "CENTIBEL"}, {
|
|
MIXF_DECIBEL, "DECIBEL"}, {
|
|
MIXF_WIDE, "WIDE"}
|
|
};
|
|
GString *s;
|
|
GQuark q;
|
|
gint i;
|
|
|
|
if (flags == 0)
|
|
return "None";
|
|
|
|
s = g_string_new ("");
|
|
for (i = 0; i < G_N_ELEMENTS (all_flags); ++i) {
|
|
if ((flags & all_flags[i].flag)) {
|
|
if (s->len > 0)
|
|
g_string_append (s, " | ");
|
|
g_string_append (s, all_flags[i].nick);
|
|
flags &= ~all_flags[i].flag; /* unset */
|
|
}
|
|
}
|
|
|
|
/* unknown flags? */
|
|
if (flags != 0) {
|
|
if (s->len > 0)
|
|
g_string_append (s, " | ");
|
|
g_string_append (s, "???");
|
|
}
|
|
|
|
/* we'll just put it into the global quark table (cheeky, eh?) */
|
|
q = g_quark_from_string (s->str);
|
|
g_string_free (s, TRUE);
|
|
|
|
return g_quark_to_string (q);
|
|
}
|
|
#endif /* GST_DISABLE_GST_DEBUG */
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
static void
|
|
gst_oss4_mixer_control_dump_tree (GstOss4MixerControl * mc, gint depth)
|
|
{
|
|
GList *c;
|
|
gchar spaces[64];
|
|
gint i;
|
|
|
|
depth = MIN (sizeof (spaces) - 1, depth);
|
|
for (i = 0; i < depth; ++i)
|
|
spaces[i] = ' ';
|
|
spaces[i] = '\0';
|
|
|
|
GST_LOG ("%s%s (%s)", spaces, mc->mixext.extname,
|
|
mixer_ext_type_get_name (mc->mixext.type));
|
|
for (c = mc->children; c != NULL; c = c->next) {
|
|
GstOss4MixerControl *child_mc = (GstOss4MixerControl *) c->data;
|
|
|
|
gst_oss4_mixer_control_dump_tree (child_mc, depth + 2);
|
|
}
|
|
}
|
|
#endif /* GST_DISABLE_GST_DEBUG */
|
|
|
|
static GList *
|
|
gst_oss4_mixer_get_controls (GstOss4Mixer * mixer)
|
|
{
|
|
GstOss4MixerControl *root_mc = NULL;
|
|
oss_mixerinfo mi = { 0, };
|
|
GList *controls = NULL;
|
|
GList *l;
|
|
guint i;
|
|
|
|
/* Get info for currently open fd */
|
|
mi.dev = -1;
|
|
if (ioctl (mixer->fd, SNDCTL_MIXERINFO, &mi) == -1)
|
|
goto no_mixerinfo;
|
|
|
|
if (mi.nrext <= 0) {
|
|
GST_DEBUG ("mixer %s has no controls", mi.id);
|
|
return NULL;
|
|
}
|
|
|
|
GST_INFO ("Reading controls for mixer %s", mi.id);
|
|
|
|
for (i = 0; i < mi.nrext; ++i) {
|
|
GstOss4MixerControl *mc;
|
|
oss_mixext mix_ext = { 0, };
|
|
|
|
mix_ext.dev = mi.dev;
|
|
mix_ext.ctrl = i;
|
|
|
|
if (ioctl (mixer->fd, SNDCTL_MIX_EXTINFO, &mix_ext) == -1) {
|
|
GST_DEBUG ("SNDCTL_MIX_EXTINFO failed on mixer %s, control %d: %s",
|
|
mi.id, i, g_strerror (errno));
|
|
continue;
|
|
}
|
|
|
|
/* if this is the last one, save it for is-interface-up-to-date checking */
|
|
if (i == mi.nrext)
|
|
mixer->last_mixext = mix_ext;
|
|
|
|
mc = g_new0 (GstOss4MixerControl, 1);
|
|
mc->mixext = mix_ext;
|
|
|
|
/* both control_no and desc fields are pretty useless, ie. not always set,
|
|
* if ever, so not listed here */
|
|
GST_INFO ("Control %d", mix_ext.ctrl);
|
|
GST_INFO (" name : %s", mix_ext.extname);
|
|
GST_INFO (" type : %s (%d)", mixer_ext_type_get_name (mix_ext.type),
|
|
mix_ext.type);
|
|
GST_INFO (" flags : %s (0x%04x)",
|
|
mixer_ext_flags_get_string (mix_ext.flags), mix_ext.flags);
|
|
GST_INFO (" parent : %d", mix_ext.parent);
|
|
|
|
if (!MIXEXT_IS_ROOT (mix_ext)) {
|
|
/* find parent (we assume it comes in the list before the child) */
|
|
for (l = controls; l != NULL; l = l->next) {
|
|
GstOss4MixerControl *parent_mc = (GstOss4MixerControl *) l->data;
|
|
|
|
if (parent_mc->mixext.ctrl == mix_ext.parent) {
|
|
mc->parent = parent_mc;
|
|
parent_mc->children = g_list_append (parent_mc->children, mc);
|
|
break;
|
|
}
|
|
}
|
|
if (mc->parent == NULL) {
|
|
GST_ERROR_OBJECT (mixer, "couldn't find parent for control %d", i);
|
|
g_free (mc);
|
|
continue;
|
|
}
|
|
} else if (root_mc == NULL) {
|
|
root_mc = mc;
|
|
} else {
|
|
GST_WARNING_OBJECT (mixer, "two root controls?!");
|
|
}
|
|
|
|
controls = g_list_prepend (controls, mc);
|
|
}
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
gst_oss4_mixer_control_dump_tree (root_mc, 0);
|
|
#endif
|
|
|
|
return g_list_reverse (controls);
|
|
|
|
/* ERRORS */
|
|
no_mixerinfo:
|
|
{
|
|
GST_WARNING ("SNDCTL_MIXERINFO failed on mixer device %s: %s", mi.id,
|
|
g_strerror (errno));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_controls_guess_master (GstOss4Mixer * mixer,
|
|
const GList * controls)
|
|
{
|
|
GstOss4MixerControl *master_mc = NULL;
|
|
const GList *l;
|
|
|
|
for (l = controls; l != NULL; l = l->next) {
|
|
GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data;
|
|
|
|
/* do we need to check if it's a slider type here? */
|
|
if ((mc->mixext.flags & MIXF_PCMVOL)) {
|
|
GST_INFO_OBJECT (mixer, "First PCM control: %s", mc->mixext.extname);
|
|
master_mc = mc;
|
|
break;
|
|
}
|
|
|
|
if (((mc->mixext.flags & MIXF_MAINVOL)) && master_mc == NULL) {
|
|
GST_INFO_OBJECT (mixer, "First main volume control: %s",
|
|
mc->mixext.extname);
|
|
master_mc = mc;
|
|
}
|
|
}
|
|
|
|
if (master_mc != NULL)
|
|
master_mc->is_master = TRUE;
|
|
}
|
|
|
|
/* type: -1 for all types, otherwise just return siblings with requested type */
|
|
static GList *
|
|
gst_oss4_mixer_control_get_siblings (GstOss4MixerControl * mc, gint type)
|
|
{
|
|
GList *s, *siblings = NULL;
|
|
|
|
if (mc->parent == NULL)
|
|
return NULL;
|
|
|
|
for (s = mc->parent->children; s != NULL; s = s->next) {
|
|
GstOss4MixerControl *sibling = (GstOss4MixerControl *) s->data;
|
|
|
|
if (mc != sibling && (type < 0 || sibling->mixext.type == type))
|
|
siblings = g_list_append (siblings, sibling);
|
|
}
|
|
|
|
return siblings;
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_controls_find_sliders (GstOss4Mixer * mixer,
|
|
const GList * controls)
|
|
{
|
|
const GList *l;
|
|
|
|
for (l = controls; l != NULL; l = l->next) {
|
|
GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data;
|
|
GList *s, *siblings;
|
|
|
|
if (!MIXEXT_IS_SLIDER (mc->mixext) || mc->parent == NULL || mc->used)
|
|
continue;
|
|
|
|
mc->is_slider = TRUE;
|
|
mc->used = TRUE;
|
|
|
|
siblings = gst_oss4_mixer_control_get_siblings (mc, -1);
|
|
|
|
/* Note: the names can be misleading and may not reflect the actual
|
|
* hierarchy of the controls, e.g. it's possible that a slider is called
|
|
* connector.green and the mute control then connector.green.mute, but
|
|
* both controls are in fact siblings and both children of the group
|
|
* 'green' instead of mute being a child of connector.green as the naming
|
|
* would seem to suggest */
|
|
GST_LOG ("Slider: %s, parent=%s, %d siblings", mc->mixext.extname,
|
|
mc->parent->mixext.extname, g_list_length (siblings));
|
|
|
|
for (s = siblings; s != NULL; s = s->next) {
|
|
GstOss4MixerControl *sibling = (GstOss4MixerControl *) s->data;
|
|
|
|
GST_LOG (" %s (%s)", sibling->mixext.extname,
|
|
mixer_ext_type_get_name (sibling->mixext.type));
|
|
|
|
if (sibling->mixext.type == MIXT_MUTE ||
|
|
g_str_has_suffix (sibling->mixext.extname, ".mute")) {
|
|
/* simple case: slider with single mute sibling. We assume the .mute
|
|
* suffix in the name won't change - can't really do much else anyway */
|
|
if (sibling->mixext.type == MIXT_ONOFF ||
|
|
sibling->mixext.type == MIXT_MUTE) {
|
|
GST_LOG (" mute control for %s is %s", mc->mixext.extname,
|
|
sibling->mixext.extname);
|
|
mc->mute = sibling;
|
|
sibling->used = TRUE;
|
|
}
|
|
/* a group of .mute controls. We assume they are all switches here */
|
|
if (sibling->mixext.type == MIXT_GROUP) {
|
|
GList *m;
|
|
|
|
for (m = sibling->children; m != NULL; m = m->next) {
|
|
GstOss4MixerControl *grouped_sibling = m->data;
|
|
|
|
if (grouped_sibling->mixext.type == MIXT_ONOFF ||
|
|
grouped_sibling->mixext.type == MIXT_MUTE) {
|
|
GST_LOG (" %s is grouped mute control for %s",
|
|
grouped_sibling->mixext.extname, mc->mixext.extname);
|
|
mc->mute_group = g_list_append (mc->mute_group, grouped_sibling);
|
|
}
|
|
}
|
|
|
|
GST_LOG (" %s has a group of %d mute controls",
|
|
mc->mixext.extname, g_list_length (mc->mute_group));
|
|
|
|
/* we don't mark the individual mute controls as used, only the
|
|
* group control, as we still want individual switches for the
|
|
* individual controls */
|
|
sibling->used = TRUE;
|
|
}
|
|
}
|
|
}
|
|
g_list_free (siblings);
|
|
}
|
|
}
|
|
|
|
/* should be called with the mixer object lock held because of the ioctl;
|
|
* returns TRUE if the list was read the first time or modified */
|
|
static gboolean
|
|
gst_oss4_mixer_enum_control_update_enum_list (GstOss4Mixer * mixer,
|
|
GstOss4MixerControl * mc)
|
|
{
|
|
oss_mixer_enuminfo ei = { 0, };
|
|
guint num_existing = 0;
|
|
int i;
|
|
|
|
/* count and existing values */
|
|
while (mc->enum_vals != NULL && mc->enum_vals[num_existing] != 0)
|
|
++num_existing;
|
|
|
|
ei.dev = mc->mixext.dev;
|
|
ei.ctrl = mc->mixext.ctrl;
|
|
|
|
/* if we have create a generic list with numeric IDs already and the
|
|
* number of values hasn't changed, then there's not much to do here */
|
|
if (mc->no_list && mc->enum_vals != NULL &&
|
|
num_existing == mc->mixext.maxvalue) {
|
|
return FALSE;
|
|
}
|
|
|
|
/* if we have a list and it doesn't change, there's nothing to do either */
|
|
if (mc->enum_vals != NULL && mc->enum_version == 0)
|
|
return FALSE;
|
|
|
|
if (ioctl (mixer->fd, SNDCTL_MIX_ENUMINFO, &ei) == -1) {
|
|
g_free (mc->enum_vals);
|
|
mc->enum_vals = g_new0 (GQuark, mc->mixext.maxvalue + 1);
|
|
|
|
GST_DEBUG ("no enum info available, creating numeric values from 0-%d",
|
|
mc->mixext.maxvalue - 1);
|
|
|
|
/* "It is possible that some enum controls don't have any name list
|
|
* available. In this case the application should automatically generate
|
|
* list of numbers (0 to N-1)" */
|
|
for (i = 0; i < mc->mixext.maxvalue; ++i) {
|
|
gchar num_str[8];
|
|
|
|
g_snprintf (num_str, sizeof (num_str), "%d", i);
|
|
mc->enum_vals[i] = g_quark_from_string (num_str);
|
|
}
|
|
mc->enum_version = 0; /* the only way to change is via maxvalue */
|
|
} else {
|
|
/* old list same as current list? */
|
|
if (mc->enum_vals != NULL && mc->enum_version == ei.version)
|
|
return FALSE;
|
|
|
|
/* no list yet, or the list has changed */
|
|
GST_LOG ("%s", (mc->enum_vals) ? "enum list has changed" : "reading list");
|
|
if (ei.nvalues != mc->mixext.maxvalue) {
|
|
GST_WARNING_OBJECT (mixer, "Enum: %s, nvalues %d != maxvalue %d",
|
|
mc->mixext.extname, ei.nvalues, mc->mixext.maxvalue);
|
|
mc->mixext.maxvalue = MIN (ei.nvalues, mc->mixext.maxvalue);
|
|
}
|
|
|
|
mc->mixext.maxvalue = MIN (mc->mixext.maxvalue, OSS_ENUM_MAXVALUE);
|
|
|
|
g_free (mc->enum_vals);
|
|
mc->enum_vals = g_new0 (GQuark, mc->mixext.maxvalue + 1);
|
|
for (i = 0; i < mc->mixext.maxvalue; ++i) {
|
|
GST_LOG (" %s", ei.strings + ei.strindex[i]);
|
|
mc->enum_vals[i] =
|
|
g_quark_from_string (gst_oss4_mixer_control_get_translated_option
|
|
(ei.strings + ei.strindex[i]));
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_controls_find_enums (GstOss4Mixer * mixer,
|
|
const GList * controls)
|
|
{
|
|
const GList *l;
|
|
|
|
for (l = controls; l != NULL; l = l->next) {
|
|
GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data;
|
|
|
|
if (mc->mixext.type != MIXT_ENUM || mc->used)
|
|
continue;
|
|
|
|
mc->is_enum = TRUE;
|
|
mc->used = TRUE;
|
|
|
|
/* Note: enums are special: for most controls, the maxvalue is inclusive,
|
|
* but for enum controls it's actually exclusive (boggle), so that
|
|
* mixext.maxvalue = num_values */
|
|
|
|
GST_LOG ("Enum: %s, parent=%s, num_enums=%d", mc->mixext.extname,
|
|
mc->parent->mixext.extname, mc->mixext.maxvalue);
|
|
|
|
gst_oss4_mixer_enum_control_update_enum_list (mixer, mc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_controls_find_switches (GstOss4Mixer * mixer,
|
|
const GList * controls)
|
|
{
|
|
const GList *l;
|
|
|
|
for (l = controls; l != NULL; l = l->next) {
|
|
GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data;
|
|
|
|
if (mc->used)
|
|
continue;
|
|
|
|
if (mc->mixext.type != MIXT_ONOFF && mc->mixext.type != MIXT_MUTE)
|
|
continue;
|
|
|
|
mc->is_switch = TRUE;
|
|
mc->used = TRUE;
|
|
|
|
GST_LOG ("Switch: %s, parent=%s", mc->mixext.extname,
|
|
mc->parent->mixext.extname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_controls_find_virtual (GstOss4Mixer * mixer,
|
|
const GList * controls)
|
|
{
|
|
const GList *l;
|
|
|
|
for (l = controls; l != NULL; l = l->next) {
|
|
GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data;
|
|
|
|
/* or sscanf (mc->mixext.extname, "vmix%d-out.", &n) == 1 ? */
|
|
/* for now we just flag all virtual controls with managed labels, those
|
|
* are really more appropriate for a pavucontrol-type control thing than
|
|
* the (more hardware-oriented) mixer interface */
|
|
if (mc->mixext.id[0] == '@') {
|
|
mc->is_virtual = TRUE;
|
|
GST_LOG ("%s is virtual control with managed label", mc->mixext.extname);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_controls_dump_unused (GstOss4Mixer * mixer,
|
|
const GList * controls)
|
|
{
|
|
const GList *l;
|
|
|
|
for (l = controls; l != NULL; l = l->next) {
|
|
GstOss4MixerControl *mc = (GstOss4MixerControl *) l->data;
|
|
|
|
if (mc->used)
|
|
continue;
|
|
|
|
switch (mc->mixext.type) {
|
|
case MIXT_DEVROOT:
|
|
case MIXT_GROUP:
|
|
case MIXT_MESSAGE:
|
|
case MIXT_MONOVU:
|
|
case MIXT_STEREOVU:
|
|
case MIXT_MONOPEAK:
|
|
case MIXT_STEREOPEAK:
|
|
case MIXT_MARKER:
|
|
continue; /* not interested in these types of controls */
|
|
case MIXT_MONODB:
|
|
case MIXT_STEREODB:
|
|
GST_DEBUG ("obsolete control type %d", mc->mixext.type);
|
|
continue;
|
|
case MIXT_MONOSLIDER:
|
|
case MIXT_STEREOSLIDER:
|
|
case MIXT_SLIDER:
|
|
case MIXT_MONOSLIDER16:
|
|
case MIXT_STEREOSLIDER16:
|
|
/* this shouldn't happen */
|
|
GST_ERROR ("unused slider control?!");
|
|
continue;
|
|
case MIXT_VALUE:
|
|
case MIXT_HEXVALUE:
|
|
/* value entry, not sure what to do with that, skip for now */
|
|
continue;
|
|
case MIXT_ONOFF:
|
|
case MIXT_MUTE:
|
|
case MIXT_ENUM:
|
|
case MIXT_3D:
|
|
case MIXT_RADIOGROUP:
|
|
GST_DEBUG ("FIXME: handle %s %s",
|
|
mixer_ext_type_get_name (mc->mixext.type), mc->mixext.extname);
|
|
break;
|
|
default:
|
|
GST_WARNING ("unknown control type %d", mc->mixext.type);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
static GList *
|
|
gst_oss4_mixer_create_tracks (GstOss4Mixer * mixer, const GList * controls)
|
|
{
|
|
const GList *c;
|
|
GList *tracks = NULL;
|
|
|
|
for (c = controls; c != NULL; c = c->next) {
|
|
GstOss4MixerControl *mc = (GstOss4MixerControl *) c->data;
|
|
GstMixerTrack *track = NULL;
|
|
|
|
if (mc->is_virtual)
|
|
continue;
|
|
|
|
if (mc->is_slider) {
|
|
track = gst_oss4_mixer_slider_new (mixer, mc);
|
|
} else if (mc->is_enum) {
|
|
track = gst_oss4_mixer_enum_new (mixer, mc);
|
|
} else if (mc->is_switch) {
|
|
track = gst_oss4_mixer_switch_new (mixer, mc);
|
|
}
|
|
|
|
if (track == NULL)
|
|
continue;
|
|
|
|
track->label = gst_oss4_mixer_control_get_translated_name (mc);
|
|
track->flags = 0;
|
|
|
|
GST_LOG ("translated label: %s [%s] = %s", track->label, mc->mixext.id,
|
|
track->label);
|
|
|
|
/* This whole 'a track is either INPUT or OUTPUT' model is just flawed,
|
|
* esp. if a slider's role can be changed on the fly, like when you change
|
|
* function of a connector. What should we do in that case? Change the flag
|
|
* and make the app rebuild the interface? Ignore it? */
|
|
if (mc->mixext.flags & (MIXF_MAINVOL | MIXF_PCMVOL)) {
|
|
track->flags = GST_MIXER_TRACK_OUTPUT | GST_MIXER_TRACK_WHITELIST;
|
|
|
|
} else if (mc->mixext.flags & MIXF_RECVOL) {
|
|
/* record gain whitelisted by default */
|
|
track->flags = GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD |
|
|
GST_MIXER_TRACK_WHITELIST;
|
|
|
|
} else if (mc->mixext.flags & MIXF_MONVOL) {
|
|
/* monitor sources not whitelisted by default */
|
|
track->flags = GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD;
|
|
}
|
|
|
|
/*
|
|
* The kernel may give us better clues about the scope of a control.
|
|
* If so, try to honor it.
|
|
*/
|
|
switch (mc->mixext.desc & MIXEXT_SCOPE_MASK) {
|
|
case MIXEXT_SCOPE_INPUT:
|
|
case MIXEXT_SCOPE_RECSWITCH:
|
|
track->flags |= GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD |
|
|
GST_MIXER_TRACK_WHITELIST;
|
|
break;
|
|
case MIXEXT_SCOPE_MONITOR:
|
|
/* don't whitelist monitor tracks by default */
|
|
track->flags |= GST_MIXER_TRACK_INPUT | GST_MIXER_TRACK_NO_RECORD;
|
|
break;
|
|
case MIXEXT_SCOPE_OUTPUT:
|
|
track->flags = GST_MIXER_TRACK_OUTPUT | GST_MIXER_TRACK_WHITELIST;
|
|
break;
|
|
}
|
|
|
|
if (mc->is_master) {
|
|
track->flags |= GST_MIXER_TRACK_OUTPUT;
|
|
}
|
|
|
|
if (mc->is_master)
|
|
track->flags |= GST_MIXER_TRACK_MASTER;
|
|
|
|
tracks = g_list_append (tracks, track);
|
|
}
|
|
|
|
return tracks;
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_update_tracks (GstOss4Mixer * mixer)
|
|
{
|
|
GList *controls, *tracks;
|
|
|
|
/* read and process controls */
|
|
controls = gst_oss4_mixer_get_controls (mixer);
|
|
|
|
gst_oss4_mixer_controls_guess_master (mixer, controls);
|
|
|
|
gst_oss4_mixer_controls_find_sliders (mixer, controls);
|
|
|
|
gst_oss4_mixer_controls_find_enums (mixer, controls);
|
|
|
|
gst_oss4_mixer_controls_find_switches (mixer, controls);
|
|
|
|
gst_oss4_mixer_controls_find_virtual (mixer, controls);
|
|
|
|
gst_oss4_mixer_controls_dump_unused (mixer, controls);
|
|
|
|
tracks = gst_oss4_mixer_create_tracks (mixer, controls);
|
|
|
|
/* free old tracks and controls */
|
|
gst_oss4_mixer_free_tracks (mixer);
|
|
|
|
/* replace old with new */
|
|
mixer->tracks = tracks;
|
|
mixer->controls = controls;
|
|
}
|
|
|
|
static const GList *
|
|
gst_oss4_mixer_list_tracks (GstMixer * mixer_iface)
|
|
{
|
|
GstOss4Mixer *mixer = GST_OSS4_MIXER (mixer_iface);
|
|
|
|
g_return_val_if_fail (mixer != NULL, NULL);
|
|
g_return_val_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer), NULL);
|
|
|
|
GST_OBJECT_LOCK (mixer);
|
|
|
|
/* Do a read on the last control to check if the interface has changed */
|
|
if (!mixer->need_update && mixer->last_mixext.ctrl > 0) {
|
|
GstOss4MixerControl mc = { {0,}
|
|
,
|
|
};
|
|
int val;
|
|
|
|
mc.mixext = mixer->last_mixext;
|
|
gst_oss4_mixer_get_control_val (mixer, &mc, &val);
|
|
}
|
|
|
|
if (mixer->need_update || mixer->tracks == NULL) {
|
|
gst_oss4_mixer_update_tracks (mixer);
|
|
mixer->need_update = FALSE;
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (mixer);
|
|
|
|
return (const GList *) mixer->tracks;
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_set_volume (GstMixer * mixer, GstMixerTrack * track,
|
|
gint * volumes)
|
|
{
|
|
GstOss4Mixer *oss;
|
|
|
|
g_return_if_fail (mixer != NULL);
|
|
g_return_if_fail (GST_IS_OSS4_MIXER (mixer));
|
|
g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer));
|
|
g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track));
|
|
g_return_if_fail (volumes != NULL);
|
|
|
|
oss = GST_OSS4_MIXER (mixer);
|
|
|
|
GST_OBJECT_LOCK (oss);
|
|
|
|
if (GST_IS_OSS4_MIXER_SLIDER (track)) {
|
|
gst_oss4_mixer_slider_set_volume (GST_OSS4_MIXER_SLIDER (track), volumes);
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (oss);
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_get_volume (GstMixer * mixer, GstMixerTrack * track,
|
|
gint * volumes)
|
|
{
|
|
GstOss4Mixer *oss;
|
|
|
|
g_return_if_fail (mixer != NULL);
|
|
g_return_if_fail (GST_IS_OSS4_MIXER (mixer));
|
|
g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer));
|
|
g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track));
|
|
g_return_if_fail (volumes != NULL);
|
|
|
|
oss = GST_OSS4_MIXER (mixer);
|
|
|
|
GST_OBJECT_LOCK (oss);
|
|
|
|
memset (volumes, 0, track->num_channels * sizeof (gint));
|
|
|
|
if (GST_IS_OSS4_MIXER_SWITCH (track)) {
|
|
gboolean enabled = FALSE;
|
|
gst_oss4_mixer_switch_get (GST_OSS4_MIXER_SWITCH (track), &enabled);
|
|
}
|
|
if (GST_IS_OSS4_MIXER_SLIDER (track)) {
|
|
gst_oss4_mixer_slider_get_volume (GST_OSS4_MIXER_SLIDER (track), volumes);
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (oss);
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_set_record (GstMixer * mixer, GstMixerTrack * track,
|
|
gboolean record)
|
|
{
|
|
GstOss4Mixer *oss;
|
|
|
|
g_return_if_fail (mixer != NULL);
|
|
g_return_if_fail (GST_IS_OSS4_MIXER (mixer));
|
|
g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer));
|
|
g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track));
|
|
|
|
oss = GST_OSS4_MIXER (mixer);
|
|
|
|
GST_OBJECT_LOCK (oss);
|
|
|
|
if (GST_IS_OSS4_MIXER_SLIDER (track)) {
|
|
gst_oss4_mixer_slider_set_record (GST_OSS4_MIXER_SLIDER (track), record);
|
|
} else if (GST_IS_OSS4_MIXER_SWITCH (track)) {
|
|
if ((track->flags & GST_MIXER_TRACK_INPUT)) {
|
|
gst_oss4_mixer_switch_set (GST_OSS4_MIXER_SWITCH (track), record);
|
|
} else {
|
|
GST_WARNING_OBJECT (track, "set_record called on non-INPUT track");
|
|
}
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (oss);
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_set_mute (GstMixer * mixer, GstMixerTrack * track, gboolean mute)
|
|
{
|
|
GstOss4Mixer *oss;
|
|
|
|
g_return_if_fail (mixer != NULL);
|
|
g_return_if_fail (GST_IS_OSS4_MIXER (mixer));
|
|
g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer));
|
|
g_return_if_fail (gst_oss4_mixer_contains_track (mixer, track));
|
|
|
|
oss = GST_OSS4_MIXER (mixer);
|
|
|
|
GST_OBJECT_LOCK (oss);
|
|
|
|
if (GST_IS_OSS4_MIXER_SLIDER (track)) {
|
|
gst_oss4_mixer_slider_set_mute (GST_OSS4_MIXER_SLIDER (track), mute);
|
|
} else if (GST_IS_OSS4_MIXER_SWITCH (track)) {
|
|
gst_oss4_mixer_switch_set (GST_OSS4_MIXER_SWITCH (track), mute);
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (oss);
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_set_option (GstMixer * mixer, GstMixerOptions * options,
|
|
gchar * value)
|
|
{
|
|
GstOss4Mixer *oss;
|
|
|
|
g_return_if_fail (mixer != NULL);
|
|
g_return_if_fail (value != NULL);
|
|
g_return_if_fail (GST_IS_OSS4_MIXER (mixer));
|
|
g_return_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer));
|
|
g_return_if_fail (GST_IS_OSS4_MIXER_ENUM (options));
|
|
g_return_if_fail (gst_oss4_mixer_contains_options (mixer, options));
|
|
|
|
oss = GST_OSS4_MIXER (mixer);
|
|
|
|
GST_OBJECT_LOCK (oss);
|
|
|
|
if (!gst_oss4_mixer_enum_set_option (GST_OSS4_MIXER_ENUM (options), value)) {
|
|
/* not much we can do here but wake up the watch thread early, so it
|
|
* can do its thing and post messages if anything has changed */
|
|
gst_oss4_mixer_wake_up_watch_task (oss);
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (oss);
|
|
}
|
|
|
|
static const gchar *
|
|
gst_oss4_mixer_get_option (GstMixer * mixer, GstMixerOptions * options)
|
|
{
|
|
GstOss4Mixer *oss;
|
|
const gchar *current_val;
|
|
|
|
g_return_val_if_fail (mixer != NULL, NULL);
|
|
g_return_val_if_fail (GST_IS_OSS4_MIXER (mixer), NULL);
|
|
g_return_val_if_fail (GST_OSS4_MIXER_IS_OPEN (mixer), NULL);
|
|
g_return_val_if_fail (GST_IS_OSS4_MIXER_ENUM (options), NULL);
|
|
g_return_val_if_fail (gst_oss4_mixer_contains_options (mixer, options), NULL);
|
|
|
|
oss = GST_OSS4_MIXER (mixer);
|
|
|
|
GST_OBJECT_LOCK (oss);
|
|
|
|
current_val = gst_oss4_mixer_enum_get_option (GST_OSS4_MIXER_ENUM (options));
|
|
|
|
if (current_val == NULL) {
|
|
/* not much we can do here but wake up the watch thread early, so it
|
|
* can do its thing and post messages if anything has changed */
|
|
gst_oss4_mixer_wake_up_watch_task (oss);
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (oss);
|
|
|
|
return current_val;
|
|
}
|
|
|
|
static GstMixerFlags
|
|
gst_oss4_mixer_get_mixer_flags (GstMixer * mixer)
|
|
{
|
|
return GST_MIXER_FLAG_AUTO_NOTIFICATIONS | GST_MIXER_FLAG_HAS_WHITELIST |
|
|
GST_MIXER_FLAG_GROUPING;
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_interface_init (GstMixerClass * klass)
|
|
{
|
|
GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE;
|
|
|
|
klass->list_tracks = gst_oss4_mixer_list_tracks;
|
|
klass->set_volume = gst_oss4_mixer_set_volume;
|
|
klass->get_volume = gst_oss4_mixer_get_volume;
|
|
klass->set_mute = gst_oss4_mixer_set_mute;
|
|
klass->set_record = gst_oss4_mixer_set_record;
|
|
klass->set_option = gst_oss4_mixer_set_option;
|
|
klass->get_option = gst_oss4_mixer_get_option;
|
|
klass->get_mixer_flags = gst_oss4_mixer_get_mixer_flags;
|
|
}
|
|
|
|
/* Implement the horror that is GstImplementsInterface */
|
|
|
|
static gboolean
|
|
gst_oss4_mixer_supported (GstImplementsInterface * iface, GType iface_type)
|
|
{
|
|
GstOss4Mixer *mixer;
|
|
|
|
g_return_val_if_fail (iface_type == GST_TYPE_MIXER, FALSE);
|
|
|
|
mixer = GST_OSS4_MIXER (iface);
|
|
|
|
return GST_OSS4_MIXER_IS_OPEN (mixer);
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_implements_interface_init (GstImplementsInterfaceClass * klass)
|
|
{
|
|
klass->supported = gst_oss4_mixer_supported;
|
|
}
|
|
|
|
static void
|
|
gst_oss4_mixer_init_interfaces (GType type)
|
|
{
|
|
static const GInterfaceInfo implements_iface_info = {
|
|
(GInterfaceInitFunc) gst_oss4_mixer_implements_interface_init,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
static const GInterfaceInfo mixer_iface_info = {
|
|
(GInterfaceInitFunc) gst_oss4_mixer_interface_init,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
|
|
g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,
|
|
&implements_iface_info);
|
|
g_type_add_interface_static (type, GST_TYPE_MIXER, &mixer_iface_info);
|
|
|
|
gst_oss4_add_property_probe_interface (type);
|
|
}
|