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DuerOS-Light-SDK-v1.1.0/duer-os-light/external/mp3dec/real/coder.h@47:9e361da97763, 2017-07-18 (annotated)

Committer:
TMBOY
Date:
Tue Jul 18 16:54:45 2017 +0800
Revision:
47:9e361da97763
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
TMBOY 47:9e361da97763 1 /* ***** BEGIN LICENSE BLOCK *****
TMBOY 47:9e361da97763 2 * Version: RCSL 1.0/RPSL 1.0
TMBOY 47:9e361da97763 3 *
TMBOY 47:9e361da97763 4 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
TMBOY 47:9e361da97763 5 *
TMBOY 47:9e361da97763 6 * The contents of this file, and the files included with this file, are
TMBOY 47:9e361da97763 7 * subject to the current version of the RealNetworks Public Source License
TMBOY 47:9e361da97763 8 * Version 1.0 (the "RPSL") available at
TMBOY 47:9e361da97763 9 * http://www.helixcommunity.org/content/rpsl unless you have licensed
TMBOY 47:9e361da97763 10 * the file under the RealNetworks Community Source License Version 1.0
TMBOY 47:9e361da97763 11 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
TMBOY 47:9e361da97763 12 * in which case the RCSL will apply. You may also obtain the license terms
TMBOY 47:9e361da97763 13 * directly from RealNetworks. You may not use this file except in
TMBOY 47:9e361da97763 14 * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
TMBOY 47:9e361da97763 15 * applicable to this file, the RCSL. Please see the applicable RPSL or
TMBOY 47:9e361da97763 16 * RCSL for the rights, obligations and limitations governing use of the
TMBOY 47:9e361da97763 17 * contents of the file.
TMBOY 47:9e361da97763 18 *
TMBOY 47:9e361da97763 19 * This file is part of the Helix DNA Technology. RealNetworks is the
TMBOY 47:9e361da97763 20 * developer of the Original Code and owns the copyrights in the portions
TMBOY 47:9e361da97763 21 * it created.
TMBOY 47:9e361da97763 22 *
TMBOY 47:9e361da97763 23 * This file, and the files included with this file, is distributed and made
TMBOY 47:9e361da97763 24 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
TMBOY 47:9e361da97763 25 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
TMBOY 47:9e361da97763 26 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
TMBOY 47:9e361da97763 27 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
TMBOY 47:9e361da97763 28 *
TMBOY 47:9e361da97763 29 * Technology Compatibility Kit Test Suite(s) Location:
TMBOY 47:9e361da97763 30 * http://www.helixcommunity.org/content/tck
TMBOY 47:9e361da97763 31 *
TMBOY 47:9e361da97763 32 * Contributor(s):
TMBOY 47:9e361da97763 33 *
TMBOY 47:9e361da97763 34 * ***** END LICENSE BLOCK ***** */
TMBOY 47:9e361da97763 35
TMBOY 47:9e361da97763 36 /**************************************************************************************
TMBOY 47:9e361da97763 37 * Fixed-point MP3 decoder
TMBOY 47:9e361da97763 38 * Jon Recker (jrecker@real.com), Ken Cooke (kenc@real.com)
TMBOY 47:9e361da97763 39 * June 2003
TMBOY 47:9e361da97763 40 *
TMBOY 47:9e361da97763 41 * coder.h - private, implementation-specific header file
TMBOY 47:9e361da97763 42 **************************************************************************************/
TMBOY 47:9e361da97763 43
TMBOY 47:9e361da97763 44 #ifndef _CODER_H
TMBOY 47:9e361da97763 45 #define _CODER_H
TMBOY 47:9e361da97763 46
TMBOY 47:9e361da97763 47 #include "mp3common.h"
TMBOY 47:9e361da97763 48
TMBOY 47:9e361da97763 49 #if defined(_WIN32) && defined(_M_IX86) && (defined (_DEBUG) || defined (REL_ENABLE_ASSERTS))
TMBOY 47:9e361da97763 50 #define ASSERT(x) if (!(x)) __asm int 3;
TMBOY 47:9e361da97763 51 #else
TMBOY 47:9e361da97763 52 #define ASSERT(x) /* do nothing */
TMBOY 47:9e361da97763 53 #endif
TMBOY 47:9e361da97763 54
TMBOY 47:9e361da97763 55 #ifndef MAX
TMBOY 47:9e361da97763 56 #define MAX(a,b) ((a) > (b) ? (a) : (b))
TMBOY 47:9e361da97763 57 #endif
TMBOY 47:9e361da97763 58
TMBOY 47:9e361da97763 59 #ifndef MIN
TMBOY 47:9e361da97763 60 #define MIN(a,b) ((a) < (b) ? (a) : (b))
TMBOY 47:9e361da97763 61 #endif
TMBOY 47:9e361da97763 62
TMBOY 47:9e361da97763 63 /* clip to range [-2^n, 2^n - 1] */
TMBOY 47:9e361da97763 64 #define CLIP_2N(y, n) { \
TMBOY 47:9e361da97763 65 int sign = (y) >> 31; \
TMBOY 47:9e361da97763 66 if (sign != (y) >> (n)) { \
TMBOY 47:9e361da97763 67 (y) = sign ^ ((1 << (n)) - 1); \
TMBOY 47:9e361da97763 68 } \
TMBOY 47:9e361da97763 69 }
TMBOY 47:9e361da97763 70
TMBOY 47:9e361da97763 71 #define SIBYTES_MPEG1_MONO 17
TMBOY 47:9e361da97763 72 #define SIBYTES_MPEG1_STEREO 32
TMBOY 47:9e361da97763 73 #define SIBYTES_MPEG2_MONO 9
TMBOY 47:9e361da97763 74 #define SIBYTES_MPEG2_STEREO 17
TMBOY 47:9e361da97763 75
TMBOY 47:9e361da97763 76 /* number of fraction bits for pow43Tab (see comments there) */
TMBOY 47:9e361da97763 77 #define POW43_FRACBITS_LOW 22
TMBOY 47:9e361da97763 78 #define POW43_FRACBITS_HIGH 12
TMBOY 47:9e361da97763 79
TMBOY 47:9e361da97763 80 #define DQ_FRACBITS_OUT 25 /* number of fraction bits in output of dequant */
TMBOY 47:9e361da97763 81 #define IMDCT_SCALE 2 /* additional scaling (by sqrt(2)) for fast IMDCT36 */
TMBOY 47:9e361da97763 82
TMBOY 47:9e361da97763 83 #define HUFF_PAIRTABS 32
TMBOY 47:9e361da97763 84 #define BLOCK_SIZE 18
TMBOY 47:9e361da97763 85 #define NBANDS 32
TMBOY 47:9e361da97763 86 #define MAX_REORDER_SAMPS ((192-126)*3) /* largest critical band for short blocks (see sfBandTable) */
TMBOY 47:9e361da97763 87 #define VBUF_LENGTH (17 * 2 * NBANDS) /* for double-sized vbuf FIFO */
TMBOY 47:9e361da97763 88
TMBOY 47:9e361da97763 89 /* additional external symbols to name-mangle for static linking */
TMBOY 47:9e361da97763 90 #define SetBitstreamPointer STATNAME(SetBitstreamPointer)
TMBOY 47:9e361da97763 91 #define GetBits STATNAME(GetBits)
TMBOY 47:9e361da97763 92 #define CalcBitsUsed STATNAME(CalcBitsUsed)
TMBOY 47:9e361da97763 93 #define DequantChannel STATNAME(DequantChannel)
TMBOY 47:9e361da97763 94 #define MidSideProc STATNAME(MidSideProc)
TMBOY 47:9e361da97763 95 #define IntensityProcMPEG1 STATNAME(IntensityProcMPEG1)
TMBOY 47:9e361da97763 96 #define IntensityProcMPEG2 STATNAME(IntensityProcMPEG2)
TMBOY 47:9e361da97763 97 #define PolyphaseMono STATNAME(PolyphaseMono)
TMBOY 47:9e361da97763 98 #define PolyphaseStereo STATNAME(PolyphaseStereo)
TMBOY 47:9e361da97763 99 #define FDCT32 STATNAME(FDCT32)
TMBOY 47:9e361da97763 100
TMBOY 47:9e361da97763 101 #define ISFMpeg1 STATNAME(ISFMpeg1)
TMBOY 47:9e361da97763 102 #define ISFMpeg2 STATNAME(ISFMpeg2)
TMBOY 47:9e361da97763 103 #define ISFIIP STATNAME(ISFIIP)
TMBOY 47:9e361da97763 104 #define uniqueIDTab STATNAME(uniqueIDTab)
TMBOY 47:9e361da97763 105 #define coef32 STATNAME(coef32)
TMBOY 47:9e361da97763 106 #define polyCoef STATNAME(polyCoef)
TMBOY 47:9e361da97763 107 #define csa STATNAME(csa)
TMBOY 47:9e361da97763 108 #define imdctWin STATNAME(imdctWin)
TMBOY 47:9e361da97763 109
TMBOY 47:9e361da97763 110 #define huffTable STATNAME(huffTable)
TMBOY 47:9e361da97763 111 #define huffTabOffset STATNAME(huffTabOffset)
TMBOY 47:9e361da97763 112 #define huffTabLookup STATNAME(huffTabLookup)
TMBOY 47:9e361da97763 113 #define quadTable STATNAME(quadTable)
TMBOY 47:9e361da97763 114 #define quadTabOffset STATNAME(quadTabOffset)
TMBOY 47:9e361da97763 115 #define quadTabMaxBits STATNAME(quadTabMaxBits)
TMBOY 47:9e361da97763 116
TMBOY 47:9e361da97763 117 /* map these to the corresponding 2-bit values in the frame header */
TMBOY 47:9e361da97763 118 typedef enum {
TMBOY 47:9e361da97763 119 Stereo = 0x00, /* two independent channels, but L and R frames might have different # of bits */
TMBOY 47:9e361da97763 120 Joint = 0x01, /* coupled channels - layer III: mix of M-S and intensity, Layers I/II: intensity and direct coding only */
TMBOY 47:9e361da97763 121 Dual = 0x02, /* two independent channels, L and R always have exactly 1/2 the total bitrate */
TMBOY 47:9e361da97763 122 Mono = 0x03 /* one channel */
TMBOY 47:9e361da97763 123 } StereoMode;
TMBOY 47:9e361da97763 124
TMBOY 47:9e361da97763 125 typedef struct _BitStreamInfo {
TMBOY 47:9e361da97763 126 unsigned char *bytePtr;
TMBOY 47:9e361da97763 127 unsigned int iCache;
TMBOY 47:9e361da97763 128 int cachedBits;
TMBOY 47:9e361da97763 129 int nBytes;
TMBOY 47:9e361da97763 130 } BitStreamInfo;
TMBOY 47:9e361da97763 131
TMBOY 47:9e361da97763 132 typedef struct _FrameHeader {
TMBOY 47:9e361da97763 133 MPEGVersion ver; /* version ID */
TMBOY 47:9e361da97763 134 int layer; /* layer index (1, 2, or 3) */
TMBOY 47:9e361da97763 135 int crc; /* CRC flag: 0 = disabled, 1 = enabled */
TMBOY 47:9e361da97763 136 int brIdx; /* bitrate index (0 - 15) */
TMBOY 47:9e361da97763 137 int srIdx; /* sample rate index (0 - 2) */
TMBOY 47:9e361da97763 138 int paddingBit; /* padding flag: 0 = no padding, 1 = single pad byte */
TMBOY 47:9e361da97763 139 int privateBit; /* unused */
TMBOY 47:9e361da97763 140 StereoMode sMode; /* mono/stereo mode */
TMBOY 47:9e361da97763 141 int modeExt; /* used to decipher joint stereo mode */
TMBOY 47:9e361da97763 142 int copyFlag; /* copyright flag: 0 = no, 1 = yes */
TMBOY 47:9e361da97763 143 int origFlag; /* original flag: 0 = copy, 1 = original */
TMBOY 47:9e361da97763 144 int emphasis; /* deemphasis mode */
TMBOY 47:9e361da97763 145 int CRCWord; /* CRC word (16 bits, 0 if crc not enabled) */
TMBOY 47:9e361da97763 146
TMBOY 47:9e361da97763 147 const SFBandTable *sfBand;
TMBOY 47:9e361da97763 148 } FrameHeader;
TMBOY 47:9e361da97763 149
TMBOY 47:9e361da97763 150 typedef struct _SideInfoSub {
TMBOY 47:9e361da97763 151 int part23Length; /* number of bits in main data */
TMBOY 47:9e361da97763 152 int nBigvals; /* 2x this = first set of Huffman cw's (maximum amplitude can be > 1) */
TMBOY 47:9e361da97763 153 int globalGain; /* overall gain for dequantizer */
TMBOY 47:9e361da97763 154 int sfCompress; /* unpacked to figure out number of bits in scale factors */
TMBOY 47:9e361da97763 155 int winSwitchFlag; /* window switching flag */
TMBOY 47:9e361da97763 156 int blockType; /* block type */
TMBOY 47:9e361da97763 157 int mixedBlock; /* 0 = regular block (all short or long), 1 = mixed block */
TMBOY 47:9e361da97763 158 int tableSelect[3]; /* index of Huffman tables for the big values regions */
TMBOY 47:9e361da97763 159 int subBlockGain[3]; /* subblock gain offset, relative to global gain */
TMBOY 47:9e361da97763 160 int region0Count; /* 1+region0Count = num scale factor bands in first region of bigvals */
TMBOY 47:9e361da97763 161 int region1Count; /* 1+region1Count = num scale factor bands in second region of bigvals */
TMBOY 47:9e361da97763 162 int preFlag; /* for optional high frequency boost */
TMBOY 47:9e361da97763 163 int sfactScale; /* scaling of the scalefactors */
TMBOY 47:9e361da97763 164 int count1TableSelect; /* index of Huffman table for quad codewords */
TMBOY 47:9e361da97763 165 } SideInfoSub;
TMBOY 47:9e361da97763 166
TMBOY 47:9e361da97763 167 typedef struct _SideInfo {
TMBOY 47:9e361da97763 168 int mainDataBegin;
TMBOY 47:9e361da97763 169 int privateBits;
TMBOY 47:9e361da97763 170 int scfsi[MAX_NCHAN][MAX_SCFBD]; /* 4 scalefactor bands per channel */
TMBOY 47:9e361da97763 171
TMBOY 47:9e361da97763 172 SideInfoSub sis[MAX_NGRAN][MAX_NCHAN];
TMBOY 47:9e361da97763 173 } SideInfo;
TMBOY 47:9e361da97763 174
TMBOY 47:9e361da97763 175 typedef struct {
TMBOY 47:9e361da97763 176 int cbType; /* pure long = 0, pure short = 1, mixed = 2 */
TMBOY 47:9e361da97763 177 int cbEndS[3]; /* number nonzero short cb's, per subbblock */
TMBOY 47:9e361da97763 178 int cbEndSMax; /* max of cbEndS[] */
TMBOY 47:9e361da97763 179 int cbEndL; /* number nonzero long cb's */
TMBOY 47:9e361da97763 180 } CriticalBandInfo;
TMBOY 47:9e361da97763 181
TMBOY 47:9e361da97763 182 typedef struct _DequantInfo {
TMBOY 47:9e361da97763 183 int workBuf[MAX_REORDER_SAMPS]; /* workbuf for reordering short blocks */
TMBOY 47:9e361da97763 184 CriticalBandInfo cbi[MAX_NCHAN]; /* filled in dequantizer, used in joint stereo reconstruction */
TMBOY 47:9e361da97763 185 } DequantInfo;
TMBOY 47:9e361da97763 186
TMBOY 47:9e361da97763 187 typedef struct _HuffmanInfo {
TMBOY 47:9e361da97763 188 int huffDecBuf[MAX_NCHAN][MAX_NSAMP]; /* used both for decoded Huffman values and dequantized coefficients */
TMBOY 47:9e361da97763 189 int nonZeroBound[MAX_NCHAN]; /* number of coeffs in huffDecBuf[ch] which can be > 0 */
TMBOY 47:9e361da97763 190 int gb[MAX_NCHAN]; /* minimum number of guard bits in huffDecBuf[ch] */
TMBOY 47:9e361da97763 191 } HuffmanInfo;
TMBOY 47:9e361da97763 192
TMBOY 47:9e361da97763 193 typedef enum _HuffTabType {
TMBOY 47:9e361da97763 194 noBits,
TMBOY 47:9e361da97763 195 oneShot,
TMBOY 47:9e361da97763 196 loopNoLinbits,
TMBOY 47:9e361da97763 197 loopLinbits,
TMBOY 47:9e361da97763 198 quadA,
TMBOY 47:9e361da97763 199 quadB,
TMBOY 47:9e361da97763 200 invalidTab
TMBOY 47:9e361da97763 201 } HuffTabType;
TMBOY 47:9e361da97763 202
TMBOY 47:9e361da97763 203 typedef struct _HuffTabLookup {
TMBOY 47:9e361da97763 204 int linBits;
TMBOY 47:9e361da97763 205 HuffTabType tabType;
TMBOY 47:9e361da97763 206 } HuffTabLookup;
TMBOY 47:9e361da97763 207
TMBOY 47:9e361da97763 208 typedef struct _IMDCTInfo {
TMBOY 47:9e361da97763 209 int outBuf[MAX_NCHAN][BLOCK_SIZE][NBANDS]; /* output of IMDCT */
TMBOY 47:9e361da97763 210 int overBuf[MAX_NCHAN][MAX_NSAMP / 2]; /* overlap-add buffer (by symmetry, only need 1/2 size) */
TMBOY 47:9e361da97763 211 int numPrevIMDCT[MAX_NCHAN]; /* how many IMDCT's calculated in this channel on prev. granule */
TMBOY 47:9e361da97763 212 int prevType[MAX_NCHAN];
TMBOY 47:9e361da97763 213 int prevWinSwitch[MAX_NCHAN];
TMBOY 47:9e361da97763 214 int gb[MAX_NCHAN];
TMBOY 47:9e361da97763 215 } IMDCTInfo;
TMBOY 47:9e361da97763 216
TMBOY 47:9e361da97763 217 typedef struct _BlockCount {
TMBOY 47:9e361da97763 218 int nBlocksLong;
TMBOY 47:9e361da97763 219 int nBlocksTotal;
TMBOY 47:9e361da97763 220 int nBlocksPrev;
TMBOY 47:9e361da97763 221 int prevType;
TMBOY 47:9e361da97763 222 int prevWinSwitch;
TMBOY 47:9e361da97763 223 int currWinSwitch;
TMBOY 47:9e361da97763 224 int gbIn;
TMBOY 47:9e361da97763 225 int gbOut;
TMBOY 47:9e361da97763 226 } BlockCount;
TMBOY 47:9e361da97763 227
TMBOY 47:9e361da97763 228 /* max bits in scalefactors = 5, so use char's to save space */
TMBOY 47:9e361da97763 229 typedef struct _ScaleFactorInfoSub {
TMBOY 47:9e361da97763 230 char l[23]; /* [band] */
TMBOY 47:9e361da97763 231 char s[13][3]; /* [band][window] */
TMBOY 47:9e361da97763 232 } ScaleFactorInfoSub;
TMBOY 47:9e361da97763 233
TMBOY 47:9e361da97763 234 /* used in MPEG 2, 2.5 intensity (joint) stereo only */
TMBOY 47:9e361da97763 235 typedef struct _ScaleFactorJS {
TMBOY 47:9e361da97763 236 int intensityScale;
TMBOY 47:9e361da97763 237 int slen[4];
TMBOY 47:9e361da97763 238 int nr[4];
TMBOY 47:9e361da97763 239 } ScaleFactorJS;
TMBOY 47:9e361da97763 240
TMBOY 47:9e361da97763 241 typedef struct _ScaleFactorInfo {
TMBOY 47:9e361da97763 242 ScaleFactorInfoSub sfis[MAX_NGRAN][MAX_NCHAN];
TMBOY 47:9e361da97763 243 ScaleFactorJS sfjs;
TMBOY 47:9e361da97763 244 } ScaleFactorInfo;
TMBOY 47:9e361da97763 245
TMBOY 47:9e361da97763 246 /* NOTE - could get by with smaller vbuf if memory is more important than speed
TMBOY 47:9e361da97763 247 * (in Subband, instead of replicating each block in FDCT32 you would do a memmove on the
TMBOY 47:9e361da97763 248 * last 15 blocks to shift them down one, a hardware style FIFO)
TMBOY 47:9e361da97763 249 */
TMBOY 47:9e361da97763 250 typedef struct _SubbandInfo {
TMBOY 47:9e361da97763 251 int vbuf[MAX_NCHAN * VBUF_LENGTH]; /* vbuf for fast DCT-based synthesis PQMF - double size for speed (no modulo indexing) */
TMBOY 47:9e361da97763 252 int vindex; /* internal index for tracking position in vbuf */
TMBOY 47:9e361da97763 253 } SubbandInfo;
TMBOY 47:9e361da97763 254
TMBOY 47:9e361da97763 255 /* bitstream.c */
TMBOY 47:9e361da97763 256 void SetBitstreamPointer(BitStreamInfo *bsi, int nBytes, unsigned char *buf);
TMBOY 47:9e361da97763 257 unsigned int GetBits(BitStreamInfo *bsi, int nBits);
TMBOY 47:9e361da97763 258 int CalcBitsUsed(BitStreamInfo *bsi, unsigned char *startBuf, int startOffset);
TMBOY 47:9e361da97763 259
TMBOY 47:9e361da97763 260 /* dequant.c, dqchan.c, stproc.c */
TMBOY 47:9e361da97763 261 int DequantChannel(int *sampleBuf, int *workBuf, int *nonZeroBound, FrameHeader *fh, SideInfoSub *sis,
TMBOY 47:9e361da97763 262 ScaleFactorInfoSub *sfis, CriticalBandInfo *cbi);
TMBOY 47:9e361da97763 263 void MidSideProc(int x[MAX_NCHAN][MAX_NSAMP], int nSamps, int mOut[2]);
TMBOY 47:9e361da97763 264 void IntensityProcMPEG1(int x[MAX_NCHAN][MAX_NSAMP], int nSamps, FrameHeader *fh, ScaleFactorInfoSub *sfis,
TMBOY 47:9e361da97763 265 CriticalBandInfo *cbi, int midSideFlag, int mixFlag, int mOut[2]);
TMBOY 47:9e361da97763 266 void IntensityProcMPEG2(int x[MAX_NCHAN][MAX_NSAMP], int nSamps, FrameHeader *fh, ScaleFactorInfoSub *sfis,
TMBOY 47:9e361da97763 267 CriticalBandInfo *cbi, ScaleFactorJS *sfjs, int midSideFlag, int mixFlag, int mOut[2]);
TMBOY 47:9e361da97763 268
TMBOY 47:9e361da97763 269 /* dct32.c */
TMBOY 47:9e361da97763 270 void FDCT32(int *x, int *d, int offset, int oddBlock, int gb);
TMBOY 47:9e361da97763 271
TMBOY 47:9e361da97763 272 /* hufftabs.c */
TMBOY 47:9e361da97763 273 extern const HuffTabLookup huffTabLookup[HUFF_PAIRTABS];
TMBOY 47:9e361da97763 274 extern const int huffTabOffset[HUFF_PAIRTABS];
TMBOY 47:9e361da97763 275 extern const unsigned short huffTable[];
TMBOY 47:9e361da97763 276 extern const unsigned char quadTable[64+16];
TMBOY 47:9e361da97763 277 extern const int quadTabOffset[2];
TMBOY 47:9e361da97763 278 extern const int quadTabMaxBits[2];
TMBOY 47:9e361da97763 279
TMBOY 47:9e361da97763 280 /* polyphase.c (or asmpoly.s)
TMBOY 47:9e361da97763 281 * some platforms require a C++ compile of all source files,
TMBOY 47:9e361da97763 282 * so if we're compiling C as C++ and using native assembly
TMBOY 47:9e361da97763 283 * for these functions we need to prevent C++ name mangling.
TMBOY 47:9e361da97763 284 */
TMBOY 47:9e361da97763 285 #ifdef __cplusplus
TMBOY 47:9e361da97763 286 extern "C" {
TMBOY 47:9e361da97763 287 #endif
TMBOY 47:9e361da97763 288 void PolyphaseMono(short *pcm, int *vbuf, const int *coefBase);
TMBOY 47:9e361da97763 289 void PolyphaseStereo(short *pcm, int *vbuf, const int *coefBase);
TMBOY 47:9e361da97763 290 #ifdef __cplusplus
TMBOY 47:9e361da97763 291 }
TMBOY 47:9e361da97763 292 #endif
TMBOY 47:9e361da97763 293
TMBOY 47:9e361da97763 294 /* trigtabs.c */
TMBOY 47:9e361da97763 295 extern const int imdctWin[4][36];
TMBOY 47:9e361da97763 296 extern const int ISFMpeg1[2][7];
TMBOY 47:9e361da97763 297 extern const int ISFMpeg2[2][2][16];
TMBOY 47:9e361da97763 298 extern const int ISFIIP[2][2];
TMBOY 47:9e361da97763 299 extern const int csa[8][2];
TMBOY 47:9e361da97763 300 extern const int coef32[31];
TMBOY 47:9e361da97763 301 extern const int polyCoef[264];
TMBOY 47:9e361da97763 302
TMBOY 47:9e361da97763 303 #endif /* _CODER_H */