[asterisk-commits] russell: branch group/timing r122363 - in /team/group/timing: include/asteris...

[SVN commits to the Asterisk project]

Author: russell
Date: Thu Jun 12 15:12:10 2008
New Revision: 122363

URL: http://svn.digium.com/view/asterisk?view=rev&rev=122363
Log:
Implement timer_open and timer_close, and document these API calls

Modified:
    team/group/timing/include/asterisk/timing.h
    team/group/timing/res/res_timing_dahdi.c

Modified: team/group/timing/include/asterisk/timing.h
URL: http://svn.digium.com/view/asterisk/team/group/timing/include/asterisk/timing.h?view=diff&rev=122363&r1=122362&r2=122363
==============================================================================
--- team/group/timing/include/asterisk/timing.h (original)
+++ team/group/timing/include/asterisk/timing.h Thu Jun 12 15:12:10 2008
@@ -57,12 +57,35 @@
 	AST_TIMING_EVENT_CONTINUOUS = 2,
 };
 
+/*!
+ * \brief Timing module interface
+ */
 struct ast_timing_functions {
+	/*!
+	 * \brief Open a timing fd
+	 *
+	 * \arg rate number of timer ticks per second
+	 *
+	 * \retval -1 error, with errno set
+	 * \retval >=0 success
+	 */
 	int (*timer_open)(unsigned int rate);
+
+	/*!
+	 * \brief Close an opened timing handle
+	 *
+	 * \arg handle timing handle returned from timer_open()
+	 *
+	 * \return nothing
+	 */
 	void (*timer_close)(int handle);
+
 	void (*timer_ack)(int handle, unsigned int quantity);
+
 	int (*timer_enable_continuous)(int handle);
+
 	int (*timer_disable_continuous)(int handle);
+
 	enum ast_timing_event (*timer_get_event)(int handle);
 };
 

Modified: team/group/timing/res/res_timing_dahdi.c
URL: http://svn.digium.com/view/asterisk/team/group/timing/res/res_timing_dahdi.c?view=diff&rev=122363&r1=122362&r2=122363
==============================================================================
--- team/group/timing/res/res_timing_dahdi.c (original)
+++ team/group/timing/res/res_timing_dahdi.c Thu Jun 12 15:12:10 2008
@@ -34,6 +34,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <math.h>
 
 #include "asterisk/module.h"
 #include "asterisk/timing.h"
@@ -60,11 +61,32 @@
 
 static int dahdi_timer_open(unsigned int rate)
 {
-	return 0;
+	int fd;
+	int samples;
+
+	fd = open("/dev/dahdi/timer", O_RDWR);
+
+	if (fd < 0) {
+		return -1;
+	}
+
+	/* DAHDI timers are configured using a number of samples,
+	 * based on an 8 kHz sample rate. */
+	samples = (unsigned int) roundf((8000.0 / ((float) rate)));
+
+	if (ioctl(fd, DAHDI_TIMERCONFIG, &samples)) {
+		ast_log(LOG_ERROR, "Failed to configure DAHDI timing fd for %u sample timer ticks\n",
+			samples);
+		close(fd);
+		return -1;
+	}
+
+	return fd;
 }
 
 static void dahdi_timer_close(int handle)
 {
+	close(handle);
 }
 
 static void dahdi_timer_ack(int handle, unsigned int quantity)