Initial community commit

1 files changed, 174 insertions, 0 deletions

diff --git a/Src/replicant/nsmp3dec/mpeg.h b/Src/replicant/nsmp3dec/mpeg.h
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+++ b/Src/replicant/nsmp3dec/mpeg.h
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+/***************************************************************************\
+ *
+*                    MPEG Layer3-Audio Decoder
+*                  © 1997-2006 by Fraunhofer IIS
+ *                        All Rights Reserved
+ *
+ *   filename: mpeg.h
+ *   project : ISO/MPEG-Decoder
+ *   author  : Markus Werner, addings: Martin Sieler
+ *   date    : 1995-07-07
+ *   contents/description: HEADER - iso/mpeg-definitions
+ *
+ *
+\***************************************************************************/
+
+/*
+ * $Date: 2011/01/20 22:14:40 $
+ * $Id: mpeg.h,v 1.3 2011/01/20 22:14:40 audiodsp Exp $
+ */
+
+/*-------------------------------------------------------------------------*/
+
+#ifndef __MPEG_H__
+#define __MPEG_H__
+#include "foundation/align.h"
+
+/* ------------------------ includes --------------------------------------*/
+
+/* ------------------------------------------------------------------------*/
+
+//
+// MPEG ID (fhgVersion)
+//
+#define         MPG_MPEG1               1
+#define         MPG_MPEG2               0
+#define         MPG_MPEG25              2
+
+/* ------------------------------------------------------------------------*/
+
+//
+// sample rate
+//
+#define         MPG_SF_LOW              2
+
+/* ------------------------------------------------------------------------*/
+
+//
+// header-mode field
+//
+#define         MPG_MD_STEREO           0
+#define         MPG_MD_JOINT_STEREO     1
+#define         MPG_MD_DUAL_CHANNEL     2
+#define         MPG_MD_MONO             3
+
+/*-------------------------------------------------------------------------*/
+
+//
+// channels
+//
+#define         MONO                    1
+#define         STEREO                  2
+
+/* ------------------------------------------------------------------------*/
+
+//
+// subbands, samples/subband
+//
+#define         SBLIMIT                 32
+#define         SSLIMIT                 18
+
+/* ------------------------------------------------------------------------*/
+
+//
+// info structure
+//
+typedef struct
+  {
+  int  stereo;
+  int  sample_rate_ndx;
+  int  frame_bits;
+  int  mode;
+  int  mode_ext;
+  int  header_size;
+  int  fhgVersion;
+  int  protection;
+  bool IsMpeg1;
+  } MPEG_INFO;
+
+/* ------------------------------------------------------------------------*/
+
+//
+// MPEG Layer-3 sideinfo (per channel/granule)
+//
+typedef struct
+  {
+  int part2_3_length;
+  int big_values;
+  int global_gain;
+  int scalefac_compress;
+  int window_switching_flag;
+  int block_type;
+  int mixed_block_flag;
+  int table_select[3];
+  int subblock_gain[3];
+  int region0_count;
+  int region1_count;
+  int preflag;
+  int scalefac_scale;
+  int count1table_select;
+
+  // additional calced values
+  int intensity_scale; // MPEG 2, MPEG 2.5 only
+  int zeroStartNdx;
+  int zeroSfbStartNdxIsLong;
+  int zeroSfbStartNdxL;
+  int zeroSfbStartNdxSMax;
+  int zeroSfbStartNdxS[3];
+  int zeroSbStartNdx;
+  } MP3SI_GRCH;
+
+/* ------------------------------------------------------------------------*/
+
+//
+// MPEG Layer-3 sideinfo
+//
+typedef struct
+  {
+  int main_data_begin;
+  int private_bits;
+  struct
+    {
+    int        scfsi[4];
+    MP3SI_GRCH gr[2];
+    } ch[2];
+  } MP3SI;
+
+/* ------------------------------------------------------------------------*/
+
+//
+// MPEG Layer-3 scalefactors
+//
+typedef struct
+  {
+  // scalefactors
+  int l[23];
+  int s[3][13];
+
+  // illegal intensity position
+  int l_iip[23];
+  int s_iip[13];
+  } MP3SCF;
+
+/* ------------------------------------------------------------------------*/
+
+//
+// spectrum (as transmitted)
+//
+typedef NALIGN(16) float SPECTRUM[2][SBLIMIT][SSLIMIT];
+
+//
+// spectrum (after mdct)
+//
+typedef NALIGN(16) float POLYSPECTRUM[2][SSLIMIT][SBLIMIT];
+
+/* Nullsoft added 25 Oct 2007 */
+struct DecoderHooks
+{
+	void (*layer3_vis)(SPECTRUM vistable,int gr, int nch);
+	void (*layer2_eq)(float *xr, int nch, int srate, int nparts);
+	void (*layer3_eq)(float *xr, int nch, int srate);
+};
+
+/* ------------------------------------------------------------------------*/
+#endif