diff options
Diffstat (limited to 'vrt/lib/gen_unparse_switch_body.py')
-rwxr-xr-x | vrt/lib/gen_unparse_switch_body.py | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/vrt/lib/gen_unparse_switch_body.py b/vrt/lib/gen_unparse_switch_body.py new file mode 100755 index 000000000..6c7cd01b3 --- /dev/null +++ b/vrt/lib/gen_unparse_switch_body.py @@ -0,0 +1,79 @@ +#!/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): + if cw & mask: + f.write(" header[%d] = htonl(h->%s);\n" % (index, name)) + return 1 + return 0 + + def do64(name, mask, index): + if cw & mask: + f.write(" header[%d] = htonl((uint32_t)((h->%s >> 32) & 0xffffffff));\n" % (index, name)) + f.write(" header[%d] = htonl((uint32_t)((h->%s >> 0) & 0xffffffff));\n" % (index+1, name)) + return 2 + return 0 + + def dolength(index): + f.write(" *n32_bit_words_header = %d;\n"%index) + + def dotrailer(name, mask): + if cw & mask: + f.write(" trailer[%d] = htonl(h->%s);\n" % (0, name)) + f.write(" *n32_bit_words_trailer = 1;\n") + return 1 + else: + 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() |