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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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760a841261
Original commit message from CVS: Make GstMixerTrack a GObject. I also want to make it emit several signals, starting work is in here but it's not fully implemented yet. for OSS, this will cause issues, but for ALSA, this is all automated.
133 lines
3 KiB
C
133 lines
3 KiB
C
/* GStreamer Mixer
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* mixer.c: mixer design virtual class function wrappers
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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 this 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "mixer.h"
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static void gst_mixer_class_init (GstMixerClass *klass);
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GType
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gst_mixer_get_type (void)
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{
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static GType gst_mixer_type = 0;
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if (!gst_mixer_type) {
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static const GTypeInfo gst_mixer_info = {
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sizeof (GstMixerClass),
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(GBaseInitFunc) gst_mixer_class_init,
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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0,
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NULL,
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};
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gst_mixer_type = g_type_register_static (G_TYPE_INTERFACE,
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"GstMixer",
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&gst_mixer_info, 0);
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g_type_interface_add_prerequisite (gst_mixer_type,
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GST_TYPE_INTERFACE);
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}
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return gst_mixer_type;
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}
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static void
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gst_mixer_class_init (GstMixerClass *klass)
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{
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/* default virtual functions */
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klass->list_tracks = NULL;
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klass->set_volume = NULL;
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klass->get_volume = NULL;
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klass->set_mute = NULL;
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klass->set_record = NULL;
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}
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const GList *
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gst_mixer_list_tracks (GstMixer *mixer)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->list_tracks) {
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return klass->list_tracks (mixer);
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}
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return NULL;
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}
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void
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gst_mixer_set_volume (GstMixer *mixer,
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GstMixerTrack *track,
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gint *volumes)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->set_volume) {
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klass->set_volume (mixer, track, volumes);
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}
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}
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void
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gst_mixer_get_volume (GstMixer *mixer,
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GstMixerTrack *track,
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gint *volumes)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->get_volume) {
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klass->get_volume (mixer, track, volumes);
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} else {
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gint i;
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for (i = 0; i < track->num_channels; i++) {
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volumes[i] = 0;
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}
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}
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}
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void
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gst_mixer_set_mute (GstMixer *mixer,
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GstMixerTrack *track,
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gboolean mute)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->set_mute) {
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klass->set_mute (mixer, track, mute);
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}
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}
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void
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gst_mixer_set_record (GstMixer *mixer,
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GstMixerTrack *track,
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gboolean record)
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{
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GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
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if (klass->set_record) {
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klass->set_record (mixer, track, record);
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}
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}
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