Implement xas_object_call_table

Changes:

    * Implement xas_object_call_table as a static structure to allow
      creating a static dispatch table on a per-compilation-unit basis

    * Refactor xas_object to provide a single pointer to a
      xas_object_call_table

    * Refactor all object implementations to use xas_object_call_table

1 files changed, 38 insertions, 10 deletions

diff --git a/include/xas/object.h b/include/xas/object.h
index 4d5b754..64d645b 100644
--- a/include/xas/object.h
+++ b/include/xas/object.h
@@ -3,12 +3,18 @@
 
 #include <xas/audio.h>
 
+typedef struct _xas_object_coord {
+    float x, y, z;
+} xas_object_coord;
+
 typedef struct _xas_object xas_object;
 
 typedef int (*xas_object_start_callback)(xas_object *object, size_t index);
 
 typedef int (*xas_object_stop_callback)(xas_object *object, size_t index);
 
+typedef int (*xas_object_set_type_callback)(xas_object *object, int type);
+
 typedef int (*xas_object_set_gain_callback)(xas_object *object, float gain);
 
 typedef int (*xas_object_set_freq_callback)(xas_object *object, size_t freq);
@@ -19,27 +25,43 @@ typedef int (*xas_object_set_entry_callback)(xas_object *object,
 
 typedef int (*xas_object_set_flags_callback)(xas_object *object, int flags);
 
+typedef int (*xas_object_set_point_callback)(xas_object *object,
+                                               xas_object_coord point);
+
+typedef int (*xas_object_set_heading_callback)(xas_object *object,
+                                                 xas_object_coord heading);
+
+typedef int (*xas_object_set_speed_callback)(xas_object *object, float speed);
+
 typedef xas_audio_stream *(*xas_object_stream_new_callback)(xas_object *object);
 
 typedef void (*xas_object_destroy_callback)(xas_object *object);
 
+typedef struct _xas_object_call_table {
+    xas_object_start_callback       start;
+    xas_object_stop_callback        stop;
+    xas_object_set_type_callback    set_type;
+    xas_object_set_gain_callback    set_gain;
+    xas_object_set_entry_callback   set_entry;
+    xas_object_set_freq_callback    set_freq;
+    xas_object_set_flags_callback   set_flags;
+    xas_object_set_point_callback   set_point;
+    xas_object_set_heading_callback set_heading;
+    xas_object_set_speed_callback   set_speed;
+    xas_object_stream_new_callback  stream_new;
+    xas_object_destroy_callback     destroy;
+} xas_object_call_table;
+
 struct _xas_object {
-    xas_object_start_callback      start;
-    xas_object_stop_callback       stop;
-    xas_object_set_gain_callback   set_gain;
-    xas_object_set_entry_callback  set_entry;
-    xas_object_set_freq_callback   set_freq;
-    xas_object_set_flags_callback  set_flags;
-    xas_object_stream_new_callback stream_new;
-    xas_object_destroy_callback    destroy;
+    xas_object_call_table *table;
 };
 
-void xas_object_init(xas_object *object);
-
 int xas_object_start(xas_object *object, size_t index);
 
 int xas_object_stop(xas_object *object, size_t index);
 
+int xas_object_set_type(xas_object *object, int type);
+
 int xas_object_set_gain(xas_object *object, float gain);
 
 int xas_object_set_entry(xas_object *object, size_t index, size_t entry);
@@ -48,6 +70,12 @@ int xas_object_set_freq(xas_object *object, size_t freq);
 
 int xas_object_set_flags(xas_object *object, int flags);
 
+int xas_object_set_point(xas_object *object, xas_object_coord point);
+
+int xas_object_set_heading(xas_object *object, xas_object_coord heading);
+
+int xas_object_set_speed(xas_object *object, float speed);
+
 xas_audio_stream *xas_object_stream_new(xas_object *object);
 
 void xas_object_destroy(xas_object *object);