From 9b44f51f9e162f47a951d3e933e0b0e462db576b Mon Sep 17 00:00:00 2001
From: Benny Prijono <bennylp@teluu.com>
Date: Wed, 19 Nov 2008 14:48:48 +0000
Subject: Small modifications to level.c sample to print out the timeline and
 linear level

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@2369 74dad513-b988-da41-8d7b-12977e46ad98
---
 pjsip-apps/src/samples/level.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/pjsip-apps/src/samples/level.c b/pjsip-apps/src/samples/level.c
index 4d4d7ee0..2183675c 100644
--- a/pjsip-apps/src/samples/level.c
+++ b/pjsip-apps/src/samples/level.c
@@ -72,7 +72,7 @@ static int app_perror( const char *sender, const char *title,
  */
 int main(int argc, char *argv[])
 {
-    enum { NSAMPLES = 160, COUNT=100 };
+    enum { NSAMPLES = 640, COUNT=100 };
     pj_caching_pool cp;
     pjmedia_endpt *med_endpt;
     pj_pool_t *pool;
@@ -123,10 +123,19 @@ int main(int argc, char *argv[])
 	return 1;
     }
 
+    if (file_port->info.samples_per_frame > NSAMPLES) {
+	app_perror(THIS_FILE, "WAV clock rate is too big", PJ_EINVAL);
+	return 1;
+    }
+
+    puts("Time\tPCMU\tLinear");
+    puts("------------------------");
+
     for (i=0; i<COUNT; ++i) {
 	pj_int16_t framebuf[NSAMPLES];
 	pjmedia_frame frm;
 	pj_int32_t level32;
+	unsigned ms;
 	int level;
 
 	frm.buf = framebuf;
@@ -134,10 +143,14 @@ int main(int argc, char *argv[])
 	
 	pjmedia_port_get_frame(file_port, &frm);
 
-	level32 = pjmedia_calc_avg_signal( framebuf, NSAMPLES );
+	level32 = pjmedia_calc_avg_signal(framebuf, 
+					  file_port->info.samples_per_frame);
 	level = pjmedia_linear2ulaw(level32) ^ 0xFF;
 
-	printf("%d ", level);
+	ms = i * 1000 * file_port->info.samples_per_frame /
+			file_port->info.clock_rate;
+	printf("%03d.%03d\t%7d\t%7d\n", 
+	        ms/1000, ms%1000, level, level32);
     }
     puts("");
     
-- 
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