Add a device method to retrieve the active latency

This is effectively the time until the next update will be heard by the user,
or the closest approximation thereof, in nanoseconds.

1 files changed, 9 insertions, 1 deletions

diff --git a/Alc/backends/sndio.c b/Alc/backends/sndio.c
index 1d1c512c..c1dbc1a6 100644
--- a/Alc/backends/sndio.c
+++ b/Alc/backends/sndio.c
@@ -252,6 +252,13 @@ static void sndio_stop_playback(ALCdevice *device)
 }
 
 
+static ALint64 sndio_get_latency(ALCdevice *device)
+{
+    (void)device;
+    return 0;
+}
+
+
 static const BackendFuncs sndio_funcs = {
     sndio_open_playback,
     sndio_close_playback,
@@ -263,7 +270,8 @@ static const BackendFuncs sndio_funcs = {
     NULL,
     NULL,
     NULL,
-    NULL
+    NULL,
+    sndio_get_latency
 };
 
 ALCboolean alc_sndio_init(BackendFuncs *func_list)