--- /dev/null
+/* 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__ */
projects / mafwsubrenderer / blobdiff