apps/codecs/libtta/ttadec.h

   1 /*
   2  * ttadec.h
   3  *
   4  * Description:  TTAv1 decoder definitions and prototypes
   5  * Developed by: Alexander Djourik <ald@true-audio.com>
   6  *               Pavel Zhilin <pzh@true-audio.com>
   7  *
   8  * Copyright (c) 2004 True Audio Software. All rights reserved.
   9  *
  10  */
  11
  12 /*
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  * 3. Neither the name of the True Audio Software nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  27  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  28  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  29  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  30  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  31  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  32  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  33  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  34  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  35  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  36  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37  */
  38
  39 #ifndef TTADEC_H_
  40 #define TTADEC_H_
  41
  42 #define __ATTRIBUTE_PACKED__    __attribute__((packed))
  43
  44 #define TTA1_SIGN    0x31415454
  45 #define MAX_ORDER    8
  46
  47 #ifndef WAVE_FORMAT_PCM
  48 #define WAVE_FORMAT_PCM    1
  49 #endif
  50
  51 typedef unsigned long long uint64;
  52
  53 static const unsigned int crc32_table[256] ICONST_ATTR = {
  54     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
  55     0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
  56     0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  57     0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
  58     0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
  59     0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  60     0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
  61     0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
  62     0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  63     0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
  64     0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
  65     0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  66     0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
  67     0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
  68     0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  69     0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
  70     0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
  71     0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  72     0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
  73     0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
  74     0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  75     0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
  76     0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
  77     0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  78     0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
  79     0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
  80     0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  81     0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
  82     0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
  83     0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  84     0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
  85     0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
  86     0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  87     0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
  88     0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
  89     0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  90     0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
  91     0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
  92     0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
  93     0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
  94     0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
  95     0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
  96     0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
  97     0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
  98     0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
  99     0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
 100     0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
 101     0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
 102     0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
 103     0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
 104     0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
 105     0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
 106     0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
 107     0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
 108     0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
 109     0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
 110     0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
 111     0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
 112     0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
 113     0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
 114     0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
 115     0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
 116     0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
 117     0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
 118 };
 119
 120 static const unsigned int bit_mask[] ICONST_ATTR = {
 121     0x00000000, 0x00000001, 0x00000003, 0x00000007,
 122     0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
 123     0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
 124     0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
 125     0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
 126     0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
 127     0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
 128     0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
 129     0xffffffff
 130 };
 131
 132 static const unsigned int bit_shift[] ICONST_ATTR = {
 133     0x00000001, 0x00000002, 0x00000004, 0x00000008,
 134     0x00000010, 0x00000020, 0x00000040, 0x00000080,
 135     0x00000100, 0x00000200, 0x00000400, 0x00000800,
 136     0x00001000, 0x00002000, 0x00004000, 0x00008000,
 137     0x00010000, 0x00020000, 0x00040000, 0x00080000,
 138     0x00100000, 0x00200000, 0x00400000, 0x00800000,
 139     0x01000000, 0x02000000, 0x04000000, 0x08000000,
 140     0x10000000, 0x20000000, 0x40000000, 0x80000000,
 141     0x80000000, 0x80000000, 0x80000000, 0x80000000,
 142     0x80000000, 0x80000000, 0x80000000, 0x80000000
 143 };
 144
 145 static const unsigned int *shift_16 = bit_shift + 4;
 146
 147 typedef unsigned char byte;
 148
 149 #ifndef ROCKBOX_LITTLE_ENDIAN
 150 #define    ENDSWAP_INT16(x)    (((((x)>>8)&0xFF)|(((x)&0xFF)<<8)))
 151 #define    ENDSWAP_INT32(x)    (((((x)>>24)&0xFF)|(((x)>>8)&0xFF00)|(((x)&0xFF00)<<8)|(((x)&0xFF)<<24)))
 152 #define WRITE_BUFFER(x, bsize, out) { \
 153     if (bsize > 2) *out++ = (byte)(*x >> 16)); \
 154     if (bsize > 1) *out++ = (byte)(*x >> 8); \
 155     *out++ = (byte) *x; }
 156 #else
 157 #define    ENDSWAP_INT16(x)    (x)
 158 #define    ENDSWAP_INT32(x)    (x)
 159 #define WRITE_BUFFER(x, bsize, out) { \
 160     *out++ = (byte) *x; \
 161     if (bsize > 1) *out++ = (byte)(*x >> 8); \
 162     if (bsize > 2) *out++ = (byte)(*x >> 16); }
 163 #endif
 164
 165 #define PREDICTOR1(x, k)  ((int)((((uint64)x << k) - x) >> k))
 166 #define DEC(x)            (((x)&1)?(((x)+1)>>1):(-(x)>>1))
 167
 168 typedef struct {
 169     unsigned int TTAid;
 170     unsigned short AudioFormat;
 171     unsigned short NumChannels;
 172     unsigned short BitsPerSample;
 173     unsigned int SampleRate;
 174     unsigned int DataLength;
 175     unsigned int CRC32;
 176 } __ATTRIBUTE_PACKED__ tta_hdr;
 177
 178 typedef struct {
 179     unsigned int k0;
 180     unsigned int k1;
 181     unsigned int sum0;
 182     unsigned int sum1;
 183 } adapt;
 184
 185 typedef struct {
 186     int index;  /* Rockbox speciffic */
 187     int error;
 188     int round;
 189     int shift;
 190     int mutex;
 191     int qm[MAX_ORDER];
 192     int dx[MAX_ORDER * 3]; /* original: dx[MAX_ORDER + 1] */
 193     int dl[MAX_ORDER * 3]; /* original: dx[MAX_ORDER + 1] */
 194 } fltst;
 195
 196 typedef struct {
 197     fltst fst;
 198     adapt rice;
 199     int last;
 200 } decoder;
 201
 202 /* Rockbox speciffic: about id3 tags definitions delete. */
 203 #endif /* TTADEC_H_ */