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