Move library tree where it belongs

lib-src/twolame/libtwolame/psycho_n1.c

@@ -0,0 +1,74 @@
+/*
+ *	TwoLAME: an optimized MPEG Audio Layer Two encoder
+ *
+ *	Copyright (C) 2001-2004 Michael Cheng
+ *	Copyright (C) 2004-2006 The TwoLAME Project
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation; either
+ *	version 2.1 of the License, or (at your option) any later version.
+ *
+ *	This library 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
+ *	Lesser General Public License for more details.
+ *
+ *	You should have received a copy of the GNU Lesser General Public
+ *	License along with this library; if not, write to the Free Software
+ *	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  $Id: psycho_n1.c,v 1.3 2008-02-01 19:44:35 richardash1981 Exp $
+ *
+ */
+
+#include <stdio.h>
+
+#include "twolame.h"
+#include "common.h"
+#include "psycho_n1.h"
+
+/* this is the null psychoacoustic model 
+   All it does it copy some predefined values.
+   No actual modelling takes place */
+
+/* a bunch of SNR values I sort of made up	MFC 1 oct 99 
+   Found by averaging the SNR values over a sound file 
+   FIXME: Do a more rigourous investigation MFC Feb 2003 */
+
+// From Castanets.wav
+static const FLOAT snrdef[32] = {
+  30, 17, 16, 10, 3, 12, 8, 2.5, 5, 5, 6, 6, 5, 6, 10, 6, -4, 
+  -10, -21, -30, -42, -55, -68, -75, -75, -75, -75, -75, -91, -107, -110, -108
+};
+
+#ifdef TESTSNR
+// Using TMBG song "I am not your broom" about 1min. Psy Model 2
+static const FLOAT snrdefa[32] = { 
+  31, 17, 11,  9,  9,  7,  5,  3,  3,  3,  3,  3,  3,  1, -0, -2, 
+  -5, -9,-15,-22,-32,-42,-54,-62,-63,-64,-66,-67,-83,-96,-98,-102
+};
+
+// Using Babylon5 "messages from earth: track 6" 15mins. Psy Model 2.
+static const FLOAT snrdefb[32] = {
+  30, 17, 11,  9,  8,  9,  6,  5,  5,  4,  4,  3,  2, -0, -2, -5, 
+  -8,-13,-19,-27,-35,-46,-55,-64,-65,-66,-68,-69,-84,-97,-99,-104
+};
+
+// Using Babylon5 "messages from earth: track 6" 15mins. Psy Model 1
+static const FLOAT snrdefc[32] = {
+  32,  26, 22, 18, 16, 14, 12, 11, 10,	9,	9,	8,	6,	6,	4,	2,
+  0, -2, -7,-12,-18,-27,-35,-47,-53,-54,-56,-57,-57,-70,  0,  0 
+};
+#endif
+
+void psycho_n1(twolame_options *glopts, FLOAT ltmin[2][SBLIMIT], int stereo)
+{
+	int i, k;
+	
+	for (k = 0; k < stereo; k++)
+		for (i = 0; i < SBLIMIT; i++)
+			ltmin[k][i] = snrdef[i];
+}
+
+// vim:ts=4:sw=4:nowrap: