ext/pulse/pulseprobe.h

   1 /*-*- Mode: C; c-basic-offset: 2 -*-*/
   2
   3 /*
   4  *  GStreamer pulseaudio plugin
   5  *
   6  *  Copyright (c) 2004-2008 Lennart Poettering
   7  *
   8  *  gst-pulse is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU Lesser General Public License as
  10  *  published by the Free Software Foundation; either version 2.1 of the
  11  *  License, or (at your option) any later version.
  12  *
  13  *  gst-pulse is distributed in the hope that it will be useful, but
  14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16  *  Lesser General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU Lesser General Public
  19  *  License along with gst-pulse; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21  *  USA.
  22  */
  23
  24 #ifndef __GST_PULSEPROBE_H__
  25 #define __GST_PULSEPROBE_H__
  26
  27 #include <gst/gst.h>
  28
  29 G_BEGIN_DECLS
  30
  31 #include <gst/interfaces/propertyprobe.h>
  32 #include <pulse/pulseaudio.h>
  33 #include <pulse/thread-mainloop.h>
  34
  35 typedef struct _GstPulseProbe GstPulseProbe;
  36
  37 struct _GstPulseProbe
  38 {
  39   GObject *object;
  40   gchar *server;
  41
  42   GList *devices;
  43   gboolean devices_valid:1;
  44
  45   gboolean operation_success:1;
  46
  47   gboolean enumerate_sinks:1;
  48   gboolean enumerate_sources:1;
  49
  50   pa_threaded_mainloop *mainloop;
  51   pa_context *context;
  52
  53   GList *properties;
  54   guint prop_id;
  55 };
  56
  57 GstPulseProbe *gst_pulseprobe_new (GObject *object, GObjectClass * klass,
  58     guint prop_id, const gchar * server, gboolean sinks, gboolean sources);
  59 void gst_pulseprobe_free (GstPulseProbe * probe);
  60
  61 const GList *gst_pulseprobe_get_properties (GstPulseProbe * probe);
  62
  63 gboolean gst_pulseprobe_needs_probe (GstPulseProbe * probe, guint prop_id,
  64     const GParamSpec * pspec);
  65 void gst_pulseprobe_probe_property (GstPulseProbe * probe, guint prop_id,
  66     const GParamSpec * pspec);
  67 GValueArray *gst_pulseprobe_get_values (GstPulseProbe * probe, guint prop_id,
  68     const GParamSpec * pspec);
  69
  70 void gst_pulseprobe_set_server (GstPulseProbe * c, const gchar * server);
  71
  72 #define GST_IMPLEMENT_PULSEPROBE_METHODS(Type, interface_as_function)           \
  73 static const GList*                                                             \
  74 interface_as_function ## _get_properties(GstPropertyProbe * probe)              \
  75 {                                                                               \
  76   Type *this = (Type*) probe;                                                   \
  77                                                                                 \
  78   g_return_val_if_fail(this != NULL, NULL);                                     \
  79   g_return_val_if_fail(this->probe != NULL, NULL);                              \
  80                                                                                 \
  81   return gst_pulseprobe_get_properties(this->probe);                            \
  82 }                                                                               \
  83 static gboolean                                                                 \
  84 interface_as_function ## _needs_probe(GstPropertyProbe *probe, guint prop_id,   \
  85     const GParamSpec *pspec)                                                    \
  86 {                                                                               \
  87   Type *this = (Type*) probe;                                                   \
  88                                                                                 \
  89   g_return_val_if_fail(this != NULL, FALSE);                                    \
  90   g_return_val_if_fail(this->probe != NULL, FALSE);                             \
  91                                                                                 \
  92   return gst_pulseprobe_needs_probe(this->probe, prop_id, pspec);               \
  93 }                                                                               \
  94 static void                                                                     \
  95 interface_as_function ## _probe_property(GstPropertyProbe *probe,               \
  96     guint prop_id, const GParamSpec *pspec)                                     \
  97 {                                                                               \
  98   Type *this = (Type*) probe;                                                   \
  99                                                                                 \
 100   g_return_if_fail(this != NULL);                                               \
 101   g_return_if_fail(this->probe != NULL);                                        \
 102                                                                                 \
 103   gst_pulseprobe_probe_property(this->probe, prop_id, pspec);                   \
 104 }                                                                               \
 105 static GValueArray*                                                             \
 106 interface_as_function ## _get_values(GstPropertyProbe *probe, guint prop_id,    \
 107     const GParamSpec *pspec)                                                    \
 108 {                                                                               \
 109   Type *this = (Type*) probe;                                                   \
 110                                                                                 \
 111   g_return_val_if_fail(this != NULL, NULL);                                     \
 112   g_return_val_if_fail(this->probe != NULL, NULL);                              \
 113                                                                                 \
 114   return gst_pulseprobe_get_values(this->probe, prop_id, pspec);                \
 115 }                                                                               \
 116 static void                                                                     \
 117 interface_as_function ## _property_probe_interface_init(GstPropertyProbeInterface *iface)\
 118 {                                                                               \
 119   iface->get_properties = interface_as_function ## _get_properties;             \
 120   iface->needs_probe = interface_as_function ## _needs_probe;                   \
 121   iface->probe_property = interface_as_function ## _probe_property;             \
 122   iface->get_values = interface_as_function ## _get_values;                     \
 123 }
 124
 125 G_END_DECLS
 126
 127 #endif