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-rw-r--r--gst-libs/gst/Makefile.am5
-rw-r--r--gst-libs/gst/mixer/Makefile.am10
-rw-r--r--gst-libs/gst/mixer/mixer.c134
-rw-r--r--gst-libs/gst/mixer/mixer.h107
4 files changed, 254 insertions, 2 deletions
diff --git a/gst-libs/gst/Makefile.am b/gst-libs/gst/Makefile.am
index 22175dbc..2501244e 100644
--- a/gst-libs/gst/Makefile.am
+++ b/gst-libs/gst/Makefile.am
@@ -5,7 +5,8 @@ GCONF_DIR=
endif
SUBDIRS = audio idct resample riff floatcast \
- $(GCONF_DIR) media-info play video
+ $(GCONF_DIR) media-info mixer \
+ play video
DIST_SUBDIRS = audio idct resample riff floatcast \
- gconf media-info play video
+ gconf media-info mixer play video
diff --git a/gst-libs/gst/mixer/Makefile.am b/gst-libs/gst/mixer/Makefile.am
new file mode 100644
index 00000000..de67658f
--- /dev/null
+++ b/gst-libs/gst/mixer/Makefile.am
@@ -0,0 +1,10 @@
+lib_LTLIBRARIES = libgstmixer.la
+
+libgstmixer_la_SOURCES = mixer.c
+
+libgstmixerincludedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/mixer
+libgstmixerinclude_HEADERS = mixer.h
+
+libgstmixer_la_LIBADD =
+libgstmixer_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)
+libgstmixer_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
diff --git a/gst-libs/gst/mixer/mixer.c b/gst-libs/gst/mixer/mixer.c
new file mode 100644
index 00000000..3e6ce63b
--- /dev/null
+++ b/gst-libs/gst/mixer/mixer.c
@@ -0,0 +1,134 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wim.taymans@chello.be>
+ *
+ * mixer.c: mixer design virtual class function wrappers
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/mixer/mixer.h>
+
+static void gst_mixer_class_init (GstMixerClass *klass);
+
+GType
+gst_mixer_get_type (void)
+{
+ static GType gst_mixer_type = 0;
+
+ if (!gst_mixer_type) {
+ static const GTypeInfo gst_mixer_info = {
+ sizeof (GstMixerClass),
+ (GBaseInitFunc) gst_mixer_class_init,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ 0,
+ 0,
+ NULL,
+ };
+
+ gst_mixer_type = g_type_register_static (G_TYPE_INTERFACE,
+ "GstMixer",
+ &gst_mixer_info, 0);
+ g_type_interface_add_prerequisite (gst_mixer_type,
+ GST_TYPE_INTERFACE);
+ }
+
+ return gst_mixer_type;
+}
+
+static void
+gst_mixer_class_init (GstMixerClass *klass)
+{
+ /* default virtual functions */
+ klass->list_channels = NULL;
+ klass->set_volume = NULL;
+ klass->get_volume = NULL;
+ klass->set_mute = NULL;
+ klass->set_record = NULL;
+}
+
+const GList *
+gst_mixer_list_channels (GstMixer *mixer)
+{
+ GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+ if (klass->list_channels) {
+ return klass->list_channels (mixer);
+ }
+
+ return NULL;
+}
+
+void
+gst_mixer_set_volume (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gint *volumes)
+{
+ GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+ if (klass->set_volume) {
+ klass->set_volume (mixer, channel, volumes);
+ }
+}
+
+void
+gst_mixer_get_volume (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gint *volumes)
+{
+ GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+ if (klass->get_volume) {
+ klass->get_volume (mixer, channel, volumes);
+ } else {
+ gint i;
+
+ for (i = 0; i < channel->num_channels; i++) {
+ volumes[i] = 0;
+ }
+ }
+}
+
+void
+gst_mixer_set_mute (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gboolean mute)
+{
+ GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+ if (klass->set_mute) {
+ klass->set_mute (mixer, channel, mute);
+ }
+}
+
+void
+gst_mixer_set_record (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gboolean record)
+{
+ GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+ if (klass->set_record) {
+ klass->set_record (mixer, channel, record);
+ }
+}
diff --git a/gst-libs/gst/mixer/mixer.h b/gst-libs/gst/mixer/mixer.h
new file mode 100644
index 00000000..dab226e4
--- /dev/null
+++ b/gst-libs/gst/mixer/mixer.h
@@ -0,0 +1,107 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ * 2000 Wim Taymans <wim.taymans@chello.be>
+ *
+ * mixer.h: mixer interface design
+ *
+ * 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.
+ */
+
+#ifndef __GST_MIXER_H__
+#define __GST_MIXER_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_MIXER \
+ (gst_mixer_get_type ())
+#define GST_MIXER(obj) \
+ (GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_MIXER, GstMixer))
+#define GST_MIXER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_MIXER, GstMixerClass))
+#define GST_IS_MIXER(obj) \
+ (GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_MIXER))
+#define GST_IS_MIXER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_MIXER))
+#define GST_MIXER_GET_CLASS(inst) \
+ (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_MIXER, GstMixerClass))
+
+/* I fully realise that this naming being used here is confusing.
+ * A channel is referred to both as the number of simultaneous
+ * sound streams the input can handle as well as the in-/output
+ * itself. We need to fix this some day, I just cannot come up
+ * with something better.
+ */
+
+#define GST_MIXER_CHANNEL_INPUT (1<<0)
+#define GST_MIXER_CHANNEL_OUTPUT (1<<1)
+#define GST_MIXER_CHANNEL_MUTE (1<<2)
+#define GST_MIXER_CHANNEL_RECORD (1<<3)
+
+typedef struct _GstMixerChannel {
+ gchar *label;
+ gint num_channels,
+ flags,
+ min_volume, max_volume;
+} GstMixerChannel;
+
+#define GST_MIXER_CHANNEL_HAS_FLAG(channel, flag) \
+ ((channel)->flags & flag)
+
+typedef struct _GstMixer GstMixer;
+
+typedef struct _GstMixerClass {
+ GTypeInterface klass;
+
+ /* virtual functions */
+ const GList * (* list_channels) (GstMixer *mixer);
+
+ void (* set_volume) (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gint *volumes);
+ void (* get_volume) (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gint *volumes);
+
+ void (* set_mute) (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gboolean mute);
+ void (* set_record) (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gboolean record);
+} GstMixerClass;
+
+GType gst_mixer_get_type (void);
+
+/* virtual class function wrappers */
+const GList * gst_mixer_list_channels (GstMixer *mixer);
+void gst_mixer_set_volume (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gint *volumes);
+void gst_mixer_get_volume (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gint *volumes);
+void gst_mixer_set_mute (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gboolean mute);
+void gst_mixer_set_record (GstMixer *mixer,
+ GstMixerChannel *channel,
+ gboolean record);
+
+G_END_DECLS
+
+#endif /* __GST_MIXER_H__ */
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