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#!/usr/bin/env python
#
# Copyright 2009 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
import sys
# dispatch codeword bits
HAS_STREAM_ID = 1 << 0;
HAS_CLASS_ID = 1 << 1;
HAS_INTEGER_SECS = 1 << 2;
HAS_FRACTIONAL_SECS = 1 << 3;
HAS_TRAILER = 1 << 4;
def do_case(f, cw):
def do32(name, mask, index):
f.write(" ")
if cw & mask:
f.write("h->%s = ntohl(p[%d]);\n" % (name, index))
return 1
else:
f.write("h->%s = 0;\n" % (name,))
return 0
def do64(name, mask, index):
f.write(" ")
if cw & mask:
f.write("h->%s = ((uint64_t)(ntohl(p[%d])) << 32) | ntohl(p[%d]);\n" % (name, index, index+1))
return 2
else:
f.write("h->%s = 0;\n" % (name,))
return 0
def dolength(index):
f.write(" n32_bit_words_header = %d;\n"%index)
def dotrailer(name, mask):
if cw & mask:
f.write(" h->%s = ntohl(p[len-1]);\n" % (name,))
f.write(" n32_bit_words_trailer = 1;\n")
return 1
else:
f.write(" h->%s = 0;\n" % (name,))
f.write(" n32_bit_words_trailer = 0;\n")
return 0
f.write(" case %d:\n" % (cw,))
index = 1
index += do32("stream_id", HAS_STREAM_ID, index)
index += do64("class_id", HAS_CLASS_ID, index)
index += do32("integer_secs", HAS_INTEGER_SECS, index)
index += do64("fractional_secs", HAS_FRACTIONAL_SECS, index)
dolength(index)
dotrailer("trailer", HAS_TRAILER)
f.write(" break;\n\n")
def main():
f = sys.stdout
for cw in range(32):
do_case(f, cw)
if __name__ == '__main__':
main()
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