gstreamer/sys/oss/gstossmixer.h

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/* GStreamer OSS Mixer implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstossmixer.h: mixer interface implementation for OSS
*
* 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_OSS_MIXER_H__
#define __GST_OSS_MIXER_H__
#include <gst/gst.h>
#include <gst/interfaces/mixer.h>
#include "gstosshelper.h"
G_BEGIN_DECLS
#define GST_OSS_MIXER(obj) ((GstOssMixer*)(obj))
typedef enum {
GST_OSS_MIXER_CAPTURE = 1<<0,
GST_OSS_MIXER_PLAYBACK = 1<<1,
GST_OSS_MIXER_ALL = GST_OSS_MIXER_CAPTURE | GST_OSS_MIXER_PLAYBACK
} GstOssMixerDirection;
typedef struct _GstOssMixer GstOssMixer;
struct _GstOssMixer {
GList * tracklist; /* list of available tracks */
gint mixer_fd;
gchar * device;
gchar * cardname;
gint recmask;
gint recdevs;
gint stereomask;
gint devmask;
gint mixcaps;
GstOssMixerDirection dir;
};
GstOssMixer* gst_ossmixer_new (const gchar *device,
GstOssMixerDirection dir);
void gst_ossmixer_free (GstOssMixer *mixer);
const GList* gst_ossmixer_list_tracks (GstOssMixer * mixer);
void gst_ossmixer_set_volume (GstOssMixer * mixer,
GstMixerTrack * track,
gint * volumes);
void gst_ossmixer_get_volume (GstOssMixer * mixer,
GstMixerTrack * track,
gint * volumes);
void gst_ossmixer_set_record (GstOssMixer * mixer,
GstMixerTrack * track,
gboolean record);
void gst_ossmixer_set_mute (GstOssMixer * mixer,
GstMixerTrack * track,
gboolean mute);
#define GST_IMPLEMENT_OSS_MIXER_METHODS(Type, interface_as_function) \
static gboolean \
interface_as_function ## _supported (Type *this, GType iface_type) \
{ \
g_assert (iface_type == GST_TYPE_MIXER); \
\
return (this->mixer != NULL); \
} \
\
static const GList* \
interface_as_function ## _list_tracks (GstMixer * mixer) \
{ \
Type *this = (Type*) mixer; \
\
g_return_val_if_fail (this != NULL, NULL); \
g_return_val_if_fail (this->mixer != NULL, NULL); \
\
return gst_ossmixer_list_tracks (this->mixer); \
} \
\
static void \
interface_as_function ## _set_volume (GstMixer * mixer, GstMixerTrack * track, \
gint * volumes) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_ossmixer_set_volume (this->mixer, track, volumes); \
} \
\
static void \
interface_as_function ## _get_volume (GstMixer * mixer, GstMixerTrack * track, \
gint * volumes) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_ossmixer_get_volume (this->mixer, track, volumes); \
} \
\
static void \
interface_as_function ## _set_record (GstMixer * mixer, GstMixerTrack * track, \
gboolean record) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_ossmixer_set_record (this->mixer, track, record); \
} \
\
static void \
interface_as_function ## _set_mute (GstMixer * mixer, GstMixerTrack * track, \
gboolean mute) \
{ \
Type *this = (Type*) mixer; \
\
g_return_if_fail (this != NULL); \
g_return_if_fail (this->mixer != NULL); \
\
gst_ossmixer_set_mute (this->mixer, track, mute); \
} \
\
static void \
interface_as_function ## _interface_init (GstMixerInterface * iface) \
{ \
GST_MIXER_TYPE (iface) = GST_MIXER_HARDWARE; \
\
/* set up the interface hooks */ \
iface->list_tracks = interface_as_function ## _list_tracks; \
iface->set_volume = interface_as_function ## _set_volume; \
iface->get_volume = interface_as_function ## _get_volume; \
iface->set_mute = interface_as_function ## _set_mute; \
iface->set_record = interface_as_function ## _set_record; \
}
G_END_DECLS
#endif /* __GST_OSS_MIXER_H__ */