ALSA backend : suspend/resume handling (jack1 r4075).

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@4088 0c269be4-1314-0410-8aa9-9f06e86f4224

ChangeLog

@@ -33,10 +33,14 @@ David Garcia Garzon
   Jackdmp changes log
 ---------------------------
 
+2010-11-17 Stephane Letz  <letz@grame.fr>
+
+	* ALSA backend : suspend/resume handling (jack1 r4075).
+
 2010-11-05 Stephane Letz  <letz@grame.fr>
 
 	* In jackdmp.cpp, jackctl_setup_signals moved before jackctl_server_start. 
-	* Correct symbols export in backends.
+	* Correct symbols export in backends on OSX.
 
 2010-11-03 Stephane Letz  <letz@grame.fr>
 

linux/alsa/JackAlsaDriver.cpp

@@ -1188,6 +1188,19 @@ JackAlsaDriver::alsa_driver_xrun_recovery (alsa_driver_t *driver, float *delayed
             jack_error("status error: %s", snd_strerror(res));
         }
     }
+    
+    if (snd_pcm_status_get_state(status) == SND_PCM_STATE_SUSPENDED) { 
+        jack_error("**** alsa_pcm: pcm in suspended state, resuming it" ); 
+        if (driver->capture_handle) { 
+            if ((res = snd_pcm_prepare(driver->capture_handle)) < 0) { 
+                    jack_error("error preparing after suspend: %s", snd_strerror(res)); 
+            } 
+        } else { 
+            if ((res = snd_pcm_prepare(driver->playback_handle)) < 0) { 
+                    jack_error("error preparing after suspend: %s", snd_strerror(res)); 
+            } 
+        } 
+    } 
 
     if (snd_pcm_status_get_state(status) == SND_PCM_STATE_XRUN
             && driver->process_count > XRUN_REPORT_DELAY) {