Version 0.94.1 of the bladeenc mp3 encoder

[swftools.git] / lib / bladeenc / mdct.h

diff --git a/lib/bladeenc/mdct.h b/lib/bladeenc/mdct.h
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+/*
+                       (c) Copyright 1998-2000 - Tord Jansson
+                       ======================================
+
+               This file is part of the BladeEnc MP3 Encoder, based on
+               ISO's reference code for MPEG Layer 3 compression, and might
+               contain smaller or larger sections that are directly taken
+               from ISO's reference code.
+
+               All changes to the ISO reference code herein are either
+               copyrighted by Tord Jansson (tord.jansson@swipnet.se)
+               or sublicensed to Tord Jansson by a third party.
+
+       BladeEnc is free software; you can redistribute this file
+       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.
+
+
+
+       ------------    Changes    ------------
+
+       2000-12-10  Andre Piotrowski
+
+       -       reformatted, redesigned
+       -       MDCT_CHANGE_LEVEL 5
+*/
+
+/**********************************************************************
+ * ISO MPEG Audio Subgroup Software Simulation Group (1996)
+ * ISO 13818-3 MPEG-2 Audio Encoder - Lower Sampling Frequency Extension
+ *
+ * $Id: mdct.h,v 1.1 2002/01/10 17:30:01 kramm Exp $
+ *
+ * $Log: mdct.h,v $
+ * Revision 1.1  2002/01/10 17:30:01  kramm
+ * Version 0.94.1 of the bladeenc mp3 encoder
+ *
+ * Revision 1.1  1996/02/14 04:04:23  rowlands
+ * Initial revision
+ *
+ * Received from Mike Coleman
+ **********************************************************************/
+
+#ifndef                __MDCT__
+#define                __MDCT__
+
+
+
+
+
+#define MDCT_CHANGE_LEVEL 5
+
+
+
+
+
+typedef                double                                  L3SBS[2][3][18][SBLIMIT];   /* [gr][ch] */
+
+
+
+
+
+extern int                             fInit_mdct_sub;
+extern int                             fInit_mdct;
+
+
+extern int                             gr_idx[3];
+
+
+
+
+
+void                                   mdct_sub
+(
+       L3SBS                                   *sb_sample,
+       double                                  (*mdct_freq)[2][576],
+       int                                             stereo,
+       III_side_info_t                 *l3_side,
+       int                                             mode_gr
+);
+
+
+
+#if MDCT_CHANGE_LEVEL < 5
+
+void                                   mdct
+(
+       double                                  *in,
+       double                                  *out,
+       int                                             block_type
+);
+
+#else
+
+void                                   mdct
+(
+       double                                  inA[18][32],
+       double                                  inB[18][32],
+       int                                             band,
+       double                                  *out,
+       int                                             block_type
+);
+
+#endif
+
+
+
+
+
+#endif         /* __MDCT__ */