1 files changed, 80 insertions, 0 deletions
diff --git a/examples/alsa_timed_audio/net_time_to_monoraw.c b/examples/alsa_timed_audio/net_time_to_monoraw.c
new file mode 100644
index 00000000..07226a38
--- /dev/null
+++ b/examples/alsa_timed_audio/net_time_to_monoraw.c
@@ -0,0 +1,80 @@
+//! \file 	net_time_to_monoraw.c
+//! \author	Christopher Hall
+//! \copyright	(C) 2016 Intel Corporation, All Rights Reserved
+//!		\<\<INTEL CONFIDENTIAL\>\>
+
+//! \page net_to_sys_time Network time to monotonic raw
+//!
+//! This application connects to the timesync daemon and converts network time
+//! (802.1AS) to system time in terms of monotonic raw. The command line is:
+//! <br><br><tt>
+//! net_time_to_monoraw -netwkt=\<network time\> -if=\<shared memory segment\>
+//! </tt><br><br>
+//!
+//! Prints the system time to standard out
+
+#include <args.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <ipcdef.hpp>
+
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+int main( int argc, char **argv )
+{
+	uint64_t net_time;
+	char *input_file;
+	int stop_idx;
+	isaudk_parse_error_t parse_error;
+
+	uint64_t master_update_time, system_time_adj;
+	int64_t system_delta, master_delta;
+
+	struct __attribute__ ((__packed__)) {
+		pthread_mutex_t lock;
+		gPtpTimeData data;
+	} *shm_data;
+
+	int shm_fd;
+
+        struct isaudk_arg args[] =
+        {
+                ISAUDK_DECLARE_REQUIRED_ARG(NETTIME,&net_time),
+                ISAUDK_DECLARE_REQUIRED_ARG(INPUT_FILE,&input_file),
+        };
+
+        stop_idx = isaudk_parse_args( args, sizeof(args)/sizeof(args[0]),
+                                      argc-1, argv+1, &parse_error );
+        if( parse_error != ISAUDK_PARSE_SUCCESS )
+        {
+                printf( "Error parsing arguments\n" );
+                return -1;
+        }
+
+	shm_fd = shm_open( input_file, O_RDWR, 0 );
+	if( shm_fd == -1 )
+	{
+		printf( "Failed to open shared memory segment: %s(%s)\n",
+			input_file, strerror( errno ));
+	}
+
+	shm_data = mmap( NULL, sizeof( *shm_data ), PROT_READ | PROT_WRITE,
+			 MAP_SHARED, shm_fd, 0 );
+
+	pthread_mutex_lock( &shm_data->lock );
+	master_update_time = shm_data->data.local_time -
+		shm_data->data.ml_phoffset;
+	master_delta = net_time - master_update_time;
+	system_delta = master_delta /
+		(shm_data->data.ls_freqoffset * shm_data->data.ml_freqoffset);
+	system_time_adj = system_delta +
+		shm_data->data.local_time + shm_data->data.ls_phoffset;
+	pthread_mutex_unlock( &shm_data->lock );
+
+	printf( "%lu\n", system_time_adj );
+
+	return 0;
+}