--- /dev/null
+/*
+ (c) Copyright 1998-2001 - 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 ------------
+
+ 2000-12-11 Andre Piotrowski
+
+ - reformatted
+
+ 2000-12-12 ap
+
+ - removed fft() prototype from "encoder.h" to this file
+ - removed the fft configuration switches from "subs.c" to this file
+ - implemented ORG_SHORT_CW_LIMIT
+
+ 2001-01-12 ap
+
+ - bug fix: include encoder.h for definition of ORG_BUFFERS
+ - clear some backward compatability flags for 0.93.10
+*/
+
+/**********************************************************************
+ * ISO MPEG Audio Subgroup Software Simulation Group (1996)
+ * ISO 13818-3 MPEG-2 Audio Encoder - Lower Sampling Frequency Extension
+ *
+ * $Id: l3psy.h,v 1.1 2002/01/10 17:30:00 kramm Exp $
+ *
+
+ * $Log: l3psy.h,v $
+ * Revision 1.1 2002/01/10 17:30:00 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 __L3PSY__
+#define __L3PSY__
+
+
+
+#include "encoder.h"
+
+
+
+
+
+/* ======================================================================================== */
+/* keeping backward compatability */
+/* ======================================================================================== */
+
+#define ORG_NUMLINES_NORM 0 /* 0 = don't overwrite long numline entries with short numline entries */
+#define ORG_BLOCK_SELECT 0 /* 0 = ISO draft paper states slightly different block selection */
+#define ORG_SHORT_CW_LIMIT 0 /* 0 = ISO draft paper says first element starts at 6/4 = 1 (not 2) */
+
+
+
+
+
+/* #define CBANDS 63 */
+#define CBANDS_s 42
+#define BLKSIZE_s 256
+#define HBLKSIZE_s 129
+#define TCBMAX_l 63
+#define TCBMAX_s 42
+#define SBMAX_l 21
+#define SBMAX_s 12
+
+
+
+/* #define switch_pe 1800 */
+#define NORM_TYPE 0
+#define START_TYPE 1
+#define SHORT_TYPE 2
+#define STOP_TYPE 3
+
+
+
+
+
+void psycho_anal
+(
+#if ORG_BUFFERS
+ short int *buffer,
+ short int savebuf[2048],
+#else
+ FLOAT *buffer,
+ int buffer_idx,
+#endif
+ int ch,
+ int lay,
+/* FLOAT snr32[32], */
+ double ratio_d[SBMAX_l],
+ double ratio_ds[SBMAX_s][3],
+ double *pe,
+ gr_info *cod_info
+);
+
+void psycho_anal_init (double sfreq);
+
+void psycho_anal_exit (void);
+
+
+
+
+
+void fft (FLOAT[], FLOAT[], FLOAT[], FLOAT[], int);
+
+
+
+/*
+ Switches for configuring the fft in "subs.c"
+*/
+
+/* Do we want to reorder the data? */
+#define REORDER_DATA 0 /* no need to do that */
+
+/* To get the inverse fft, set NORMAL_FFT to 0 */
+#define NORMAL_FFT 1 /* si */
+
+/* Try this to speed up the fft when using non-complex sequences */
+#define REAL_SEQUENCE 1 /* no complex values needed */
+
+/* We assume, the real data gets prepacked externally */
+#define PREPACKED 1 /* yes */
+
+/* No one needs all the phi values in layer 3 !!! */
+#define USED_VALUES_ONLY 1
+#define LONG_FFT_MIN_IDX 0
+#define LONG_FFT_MAX_IDX 5
+#if ORG_SHORT_CW_LIMIT
+#define SHORT_FFT_MIN_IDX 2 /* ( 6+2)/4 */
+#define SHORT_FFT_MAX_IDX 51 /* (206+2)/4 - 1 */
+#else /* according to ISO */
+#define SHORT_FFT_MIN_IDX 1 /* 6/4 */
+#define SHORT_FFT_MAX_IDX 50 /* 206/4 - 1 */
+#endif
+
+
+
+
+
+#endif /* __L3PSY__ */
git.asbjorn.biz / swftools.git / blobdiff