mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-18 06:16:36 +00:00
c161e29307
Original commit message from CVS: * docs/libs/gst-plugins-base-libs-sections.txt: * ext/alsa/gstalsamixer.c: * ext/alsa/gstalsamixer.h: * ext/alsa/gstalsamixerelement.c: * ext/alsa/gstalsamixertrack.c: * gst-libs/gst/interfaces/mixer.c: * gst-libs/gst/interfaces/mixer.h: * gst-libs/gst/interfaces/mixeroptions.c: * gst-libs/gst/interfaces/mixeroptions.h: * gst-libs/gst/interfaces/mixertrack.c: * gst-libs/gst/interfaces/mixertrack.h: * tests/check/Makefile.am: * tests/check/libs/mixer.c: Patch By: Marc-Andre Lureau <marcandre.lureau@gmail.com> Fixes: #152864 Add support for notifying mixer changes on the message bus, and implement it in alsamixer. API: gst_mixer_get_mixer_flags API: gst_mixer_message_parse_mute_toggled API: gst_mixer_message_parse_record_toggled API: gst_mixer_message_parse_volume_changed API: gst_mixer_message_parse_option_changed API: GstMixerMessageType API: GstMixerFlags
217 lines
13 KiB
C
217 lines
13 KiB
C
/* ALSA mixer interface implementation.
|
|
* Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net>
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
|
|
#ifndef __GST_ALSA_MIXER_H__
|
|
#define __GST_ALSA_MIXER_H__
|
|
|
|
|
|
#include "gstalsa.h"
|
|
|
|
#include <gst/interfaces/mixer.h>
|
|
#include "gstalsamixeroptions.h"
|
|
#include "gstalsamixertrack.h"
|
|
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/* This does not get you what you think it does, use obj->mixer */
|
|
/* #define GST_ALSA_MIXER(obj) ((GstAlsaMixer*)(obj)) */
|
|
|
|
typedef struct _GstAlsaMixer GstAlsaMixer;
|
|
|
|
typedef enum {
|
|
GST_ALSA_MIXER_CAPTURE = 1<<0,
|
|
GST_ALSA_MIXER_PLAYBACK = 1<<1,
|
|
GST_ALSA_MIXER_ALL = GST_ALSA_MIXER_CAPTURE | GST_ALSA_MIXER_PLAYBACK
|
|
} GstAlsaMixerDirection;
|
|
|
|
/**
|
|
* GstAlsaMixer:
|
|
*
|
|
* Opaque data structure
|
|
*/
|
|
struct _GstAlsaMixer
|
|
{
|
|
GList * tracklist; /* list of available tracks */
|
|
|
|
snd_mixer_t * handle;
|
|
|
|
GstTask * task;
|
|
GStaticRecMutex * task_mutex;
|
|
GStaticRecMutex * rec_mutex;
|
|
|
|
int pfd[2];
|
|
|
|
GstMixer * interface;
|
|
gchar * device;
|
|
gchar * cardname;
|
|
|
|
GstAlsaMixerDirection dir;
|
|
};
|
|
|
|
|
|
GstAlsaMixer* gst_alsa_mixer_new (const gchar *device,
|
|
GstAlsaMixerDirection dir);
|
|
void gst_alsa_mixer_free (GstAlsaMixer *mixer);
|
|
|
|
const GList* gst_alsa_mixer_list_tracks (GstAlsaMixer * mixer);
|
|
void gst_alsa_mixer_set_volume (GstAlsaMixer * mixer,
|
|
GstMixerTrack * track,
|
|
gint * volumes);
|
|
void gst_alsa_mixer_get_volume (GstAlsaMixer * mixer,
|
|
GstMixerTrack * track,
|
|
gint * volumes);
|
|
void gst_alsa_mixer_set_record (GstAlsaMixer * mixer,
|
|
GstMixerTrack * track,
|
|
gboolean record);
|
|
void gst_alsa_mixer_set_mute (GstAlsaMixer * mixer,
|
|
GstMixerTrack * track,
|
|
gboolean mute);
|
|
void gst_alsa_mixer_set_option (GstAlsaMixer * mixer,
|
|
GstMixerOptions * opts,
|
|
gchar * value);
|
|
const gchar* gst_alsa_mixer_get_option (GstAlsaMixer * mixer,
|
|
GstMixerOptions * opts);
|
|
void _gst_alsa_mixer_set_interface (GstAlsaMixer * mixer,
|
|
GstMixer * interface);
|
|
GstMixerFlags gst_alsa_mixer_get_mixer_flags (GstAlsaMixer *mixer);
|
|
|
|
#define GST_IMPLEMENT_ALSA_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_alsa_mixer_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_alsa_mixer_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_alsa_mixer_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_alsa_mixer_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_alsa_mixer_set_mute (this->mixer, track, mute); \
|
|
} \
|
|
\
|
|
static void \
|
|
interface_as_function ## _set_option (GstMixer * mixer, GstMixerOptions * opts, \
|
|
gchar * value) \
|
|
{ \
|
|
Type *this = (Type*) mixer; \
|
|
\
|
|
g_return_if_fail (this != NULL); \
|
|
g_return_if_fail (this->mixer != NULL); \
|
|
\
|
|
gst_alsa_mixer_set_option (this->mixer, opts, value); \
|
|
} \
|
|
\
|
|
static const gchar* \
|
|
interface_as_function ## _get_option (GstMixer * mixer, GstMixerOptions * opts) \
|
|
{ \
|
|
Type *this = (Type*) mixer; \
|
|
\
|
|
g_return_val_if_fail (this != NULL, NULL); \
|
|
g_return_val_if_fail (this->mixer != NULL, NULL); \
|
|
\
|
|
return gst_alsa_mixer_get_option (this->mixer, opts); \
|
|
} \
|
|
\
|
|
static GstMixerFlags \
|
|
interface_as_function ## _get_mixer_flags (GstMixer * mixer) \
|
|
{ \
|
|
Type *this = (Type*) mixer; \
|
|
\
|
|
g_return_val_if_fail (this != NULL, GST_MIXER_FLAG_NONE); \
|
|
g_return_val_if_fail (this->mixer != NULL, GST_MIXER_FLAG_NONE); \
|
|
\
|
|
return gst_alsa_mixer_get_mixer_flags (this->mixer); \
|
|
} \
|
|
\
|
|
static void \
|
|
interface_as_function ## _interface_init (GstMixerClass * klass) \
|
|
{ \
|
|
GST_MIXER_TYPE (klass) = GST_MIXER_HARDWARE; \
|
|
\
|
|
/* set up the interface hooks */ \
|
|
klass->list_tracks = interface_as_function ## _list_tracks; \
|
|
klass->set_volume = interface_as_function ## _set_volume; \
|
|
klass->get_volume = interface_as_function ## _get_volume; \
|
|
klass->set_mute = interface_as_function ## _set_mute; \
|
|
klass->set_record = interface_as_function ## _set_record; \
|
|
klass->set_option = interface_as_function ## _set_option; \
|
|
klass->get_option = interface_as_function ## _get_option; \
|
|
klass->get_mixer_flags = interface_as_function ## _get_mixer_flags; \
|
|
}
|
|
|
|
|
|
G_END_DECLS
|
|
|
|
|
|
#endif /* __GST_ALSA_MIXER_H__ */
|