Merge branch 'dfsg-orig'

[debian/gnuradio] / gr-atsc / src / lib / atsci_syminfo.h

diff --git a/gr-atsc/src/lib/atsci_syminfo.h b/gr-atsc/src/lib/atsci_syminfo.h
new file mode 100644 (file)
index 0000000..a8999e7
--- /dev/null
+++ b/gr-atsc/src/lib/atsci_syminfo.h
@@ -0,0 +1,58 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2002 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 GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+#ifndef _ATSC_SYMINFO_H_
+#define _ATSC_SYMINFO_H_
+
+namespace atsc {
+
+  static const unsigned int SI_SEGMENT_NUM_MASK       = 0x1ff;
+  static const unsigned int SI_FIELD_SYNC_SEGMENT_NUM = SI_SEGMENT_NUM_MASK;  // conceptually -1
+
+  struct syminfo {
+    unsigned int    symbol_num         : 10;   // 0..831
+    unsigned int    segment_num                :  9;   // 0..311 and SI_FIELD_SYNC_SEGMENT_NUM
+    unsigned int    field_num          :  1;   // 0..1
+    unsigned int    valid              :  1;   // contents are valid
+  };
+
+
+  static inline bool
+  tag_is_start_field_sync (syminfo tag)
+  {
+    return tag.symbol_num == 0 && tag.segment_num == SI_FIELD_SYNC_SEGMENT_NUM && tag.valid;
+  }
+
+  static inline bool
+  tag_is_start_field_sync_1 (syminfo tag)
+  {
+    return tag_is_start_field_sync (tag) && tag.field_num == 0;
+  }
+
+  static inline bool
+  tag_is_start_field_sync_2 (syminfo tag)
+  {
+    return tag_is_start_field_sync (tag) && tag.field_num == 1;
+  }
+
+}
+
+#endif /* _ATSC_SYMINFO_H_ */