From 88a9e1f9332d54c1743d062adfaf48aa6d3040ff Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Tue, 27 Nov 2012 11:59:26 -0800
Subject: core: adding ability to handle extra data in headers.
---
gr-utils/src/python/gr_read_file_metadata | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
(limited to 'gr-utils/src')
diff --git a/gr-utils/src/python/gr_read_file_metadata b/gr-utils/src/python/gr_read_file_metadata
index 47109aead2..850c29ee7b 100644
--- a/gr-utils/src/python/gr_read_file_metadata
+++ b/gr-utils/src/python/gr_read_file_metadata
@@ -29,6 +29,7 @@ from gnuradio import parse_file_metadata
def main(filename):
handle = open(filename, "rb")
+ nheaders = 0
nread = 0
while(True):
# read out next header bytes
@@ -45,12 +46,27 @@ def main(filename):
sys.exit(1)
#gr.pmt_print(header)
+ print "HEADER {0}".format(nheaders)
info = parse_file_metadata.parse_header(header, hdr_start, True)
- print "\n\n"
- nread += info['nbytes'] + parse_file_metadata.HEADER_LENGTH
+ if(info["extra_len"] > 0):
+ extra_str = handle.read(info["extra_len"])
+ if(len(extra_str) == 0):
+ break
+
+ try:
+ extra = gr.pmt_deserialize_str(extra_str)
+ except RuntimeError:
+ sys.stderr.write("Could not deserialize extras: invalid or corrupt data file.\n")
+ sys.exit(1)
+ print "\nExtra Header:"
+ extra_info = parse_file_metadata.parse_extra_dict(extra, info, True)
+
+ nheaders += 1
+ nread += info['nbytes'] + parse_file_metadata.HEADER_LENGTH + info["extra_len"] + 1
handle.seek(nread, 0)
+ print "\n\n"
if __name__ == "__main__":
usage="%prog: [options] filename"
--
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