2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/pulseaudio/audio_driver_pulseaudio.cpp b/drivers/pulseaudio/audio_driver_pulseaudio.cpp
index dfe9ddc55f..4cda141f92 100644
--- a/drivers/pulseaudio/audio_driver_pulseaudio.cpp
+++ b/drivers/pulseaudio/audio_driver_pulseaudio.cpp
@@ -82,6 +82,17 @@ Error AudioDriverPulseAudio::init() {
 	return OK;
 }
 
+float AudioDriverPulseAudio::get_latency() {
+
+	if (latency==0)	{ //only do this once since it's approximate anyway
+		int error_code;
+		pa_usec_t palat = pa_simple_get_latency( pulse,&error_code);
+		latency=double(palat)/1000000.0;
+	}
+
+	return latency;
+}
+
 void AudioDriverPulseAudio::thread_func(void* p_udata) {
 
     AudioDriverPulseAudio* ad = (AudioDriverPulseAudio*)p_udata;
@@ -121,6 +132,7 @@ void AudioDriverPulseAudio::thread_func(void* p_udata) {
             ad->exit_thread = true;
             break;
         }
+
     }
 
     ad->thread_exited = true;
@@ -185,6 +197,7 @@ AudioDriverPulseAudio::AudioDriverPulseAudio() {
 	mutex = NULL;
     thread = NULL;
     pulse = NULL;
+    latency=0;
 }
 
 AudioDriverPulseAudio::~AudioDriverPulseAudio() {
diff --git a/drivers/pulseaudio/audio_driver_pulseaudio.h b/drivers/pulseaudio/audio_driver_pulseaudio.h
index e82e0c24be..e7c8bcce36 100644
--- a/drivers/pulseaudio/audio_driver_pulseaudio.h
+++ b/drivers/pulseaudio/audio_driver_pulseaudio.h
@@ -58,6 +58,8 @@ class AudioDriverPulseAudio : public AudioDriverSW {
 	mutable bool exit_thread;
 	bool pcm_open;
 
+	float latency;
+
 public:
 
 	const char* get_name() const {
@@ -72,6 +74,9 @@ public:
 	virtual void unlock();
 	virtual void finish();
 
+	virtual float get_latency();
+
+
     AudioDriverPulseAudio();
     ~AudioDriverPulseAudio();
 };