Move things round a bit.

1 files changed, 36 insertions, 0 deletions

diff --git a/src/lib/delay_line.h b/src/lib/delay_line.h
new file mode 100644
index 000000000..377553de4
--- /dev/null
+++ b/src/lib/delay_line.h
@@ -0,0 +1,36 @@
+/*
+    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+    This program 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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** A class which can be fed a stream of bytes and which can
+ *  delay them by a positive or negative amount.
+ */
+class DelayLine
+{
+public:
+	DelayLine (int);
+	~DelayLine ();
+	
+	int feed (uint8_t *, int);
+	void get_remaining (uint8_t *);
+
+private:
+	int _delay; ///< delay in bytes, +ve to move data later
+	uint8_t* _buffer; ///< buffer for +ve delays, or 0
+	int _negative_delay_remaining; ///< number of bytes of negative delay that remain to emit
+};