sink, source: Add a latency offset which is inherited from the port

[pulseaudio] / src / pulsecore / sink.h

diff --git a/src/pulsecore/sink.h b/src/pulsecore/sink.h
index 0b5048a9f57ad8ea8a7bda2d433ea153a8a15dba..b138a1dcd003a180f05d6afbbbb9b8e5c045802d 100644 (file)
--- a/src/pulsecore/sink.h
+++ b/src/pulsecore/sink.h
@@ -113,6 +113,9 @@ struct pa_sink {
     pa_device_port *active_port;
     pa_atomic_t mixer_dirty;
 
+    /* The latency offset is inherited from the currently active port */
+    pa_usec_t latency_offset;
+
     unsigned priority;
 
     /* Called when the main loop requests a state change. Called from
@@ -268,6 +271,9 @@ struct pa_sink {
          * in changing it */
         pa_usec_t fixed_latency; /* for sinks with PA_SINK_DYNAMIC_LATENCY this is 0 */
 
+        /* This latency offset is a direct copy from s->latency_offset */
+        pa_usec_t latency_offset;
+
         /* Delayed volume change events are queued here. The events
          * are stored in expiration order. The one expiring next is in
          * the head of the list. */
@@ -317,6 +323,7 @@ typedef enum pa_sink_message {
     PA_SINK_MESSAGE_SET_MAX_REQUEST,
     PA_SINK_MESSAGE_SET_PORT,
     PA_SINK_MESSAGE_UPDATE_VOLUME_AND_MUTE,
+    PA_SINK_MESSAGE_SET_LATENCY_OFFSET,
     PA_SINK_MESSAGE_MAX
 } pa_sink_message_t;
 
@@ -403,6 +410,7 @@ unsigned pa_device_init_priority(pa_proplist *p);
 /**** May be called by everyone, from main context */
 
 pa_bool_t pa_sink_update_rate(pa_sink *s, uint32_t rate, pa_bool_t passthrough);
+void pa_sink_set_latency_offset(pa_sink *s, pa_usec_t offset);
 
 /* The returned value is supposed to be in the time domain of the sound card! */
 pa_usec_t pa_sink_get_latency(pa_sink *s);