1 files changed, 80 insertions, 0 deletions
diff --git a/vrt/lib/gen_parse_switch_body.py b/vrt/lib/gen_parse_switch_body.py
new file mode 100755
index 000000000..105fa76a7
--- /dev/null
+++ b/vrt/lib/gen_parse_switch_body.py
@@ -0,0 +1,80 @@
+#!/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 dotrailer(name, mask):
+        f.write("    ")
+        if cw & mask:
+            f.write("h->%s = ntohl(p[len-1]);\n" % (name,))
+            return 1
+        else:
+            f.write("h->%s = 0;\n" % (name,))
+            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)
+    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()