[Redbutton-devel] SF.net SVN: redbutton: [202] redbutton-download/trunk/channels.c

[<ski...@us...>]

Revision: 202
          http://svn.sourceforge.net/redbutton/?rev=202&view=rev
Author:   skilvington
Date:     2007-01-28 01:52:02 -0800 (Sun, 28 Jan 2007)

Log Message:
-----------
if frontend is not locked when we start, tune it

Modified Paths:
--------------
    redbutton-download/trunk/channels.c

Modified: redbutton-download/trunk/channels.c
===================================================================
--- redbutton-download/trunk/channels.c	2007-01-27 18:59:26 UTC (rev 201)
+++ redbutton-download/trunk/channels.c	2007-01-28 09:52:02 UTC (rev 202)
@@ -238,6 +238,7 @@
 	struct dvb_frontend_parameters current_params;
 	struct dvb_frontend_parameters *needed_params;
 	struct dvb_frontend_event event;
+	fe_status_t status;
 	bool lock;
 	/* need to keep the frontend device open to stop it untuning itself */
 	static int fe_fd = -1;
@@ -281,16 +282,20 @@
 		return false;
 	}
 
-/* TODO */
 	/* if no-one was using the frontend when we open it
 	 * FE_GET_FRONTEND may say we are tuned to the frequency we want
 	 * but when we try to read any data, it fails
-	 * => always tune the first time we open the frontend
+	 * so check if we have a lock
 	 */
+	if(ioctl(fe_fd, FE_READ_STATUS, &status) < 0)
+		lock = false;
+	else
+		lock = status & FE_HAS_LOCK;
 
 	/* are we already tuned to the right frequency */
-	vverbose("Current frequency %u; needed %u", current_params.frequency, needed_params->frequency);
-	if(current_params.frequency != needed_params->frequency)
+	vverbose("Current frequency %u; needed %u; lock=%d", current_params.frequency, needed_params->frequency, lock);
+	if(!lock
+	|| current_params.frequency != needed_params->frequency)
 	{
 		verbose("Retuning to frequency %u", needed_params->frequency);
 		/* empty event queue */


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