From cb4831c273878189628a5e79e250cb5504e3dda7 Mon Sep 17 00:00:00 2001
From: Roman Zeyde <roman.zeyde@gmail.com>
Date: Mon, 21 Jul 2014 13:34:39 +0300
Subject: [PATCH] add stdin option for receiver

---
 recv.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/recv.py b/recv.py
index 0f30d47..faae96c 100755
--- a/recv.py
+++ b/recv.py
@@ -227,7 +227,8 @@ def main(fname):
 
     log.info('Running MODEM @ {:.1f} kbps'.format(sigproc.modem_bps / 1e3))
 
-    samples = stream.iread(open(fname, 'rb'))
+    fd = sys.stdin if (fname == '-') else open(fname, 'rb')
+    samples = stream.iread(fd)
     result = detect(samples, Fc)
     if result is None:
         log.warning('No carrier detected')
@@ -262,7 +263,7 @@ if __name__ == '__main__':
 
     import argparse
     p = argparse.ArgumentParser()
-    p.add_argument('fname')
+    p.add_argument('fname', default='-', nargs='?')
     args = p.parse_args()
     try:
         main(fname=args.fname)