tables.c

音频编码

 4,  5,  6,  8, 10, 10,  9, 10, 
 6,  7,  8,  9, 10, 11, 10, 10, 
 8,  8,  9, 11, 10, 12, 10, 11, 
 9, 10, 10, 11, 11, 12, 11, 12, 
 9, 10, 11, 12, 12, 13, 12, 13, 
 9,  9,  9, 10, 11, 12, 12, 12, 
 9,  9, 10, 11, 12, 12, 12, 12};

const  char t12l[] = {
 4,  4,  6,  8,  9, 10, 10, 10, 
 4,  5,  6,  7,  9,  9, 10, 10, 
 6,  6,  7,  8,  9, 10,  9, 10, 
 7,  7,  8,  8,  9, 10, 10, 10, 
 8,  8,  9,  9, 10, 10, 10, 11, 
 9,  9, 10, 10, 10, 11, 10, 11, 
 9,  9,  9, 10, 10, 11, 11, 12, 
10, 10, 10, 11, 11, 11, 11, 12};

const  char t13l[] = {
 1,  5,  7,  8,  9, 10, 10, 11, 10, 11, 12, 12, 13, 13, 14, 14, 
 4,  6,  8,  9, 10, 10, 11, 11, 11, 11, 12, 12, 13, 14, 14, 14, 
 7,  8,  9, 10, 11, 11, 12, 12, 11, 12, 12, 13, 13, 14, 15, 15, 
 8,  9, 10, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 15, 15, 
 9,  9, 11, 11, 12, 12, 13, 13, 12, 13, 13, 14, 14, 15, 15, 16, 
10, 10, 11, 12, 12, 12, 13, 13, 13, 13, 14, 13, 15, 15, 16, 16, 
10, 11, 12, 12, 13, 13, 13, 13, 13, 14, 14, 14, 15, 15, 16, 16, 
11, 11, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 18, 18, 
10, 10, 11, 12, 12, 13, 13, 14, 14, 14, 14, 15, 15, 16, 17, 17, 
11, 11, 12, 12, 13, 13, 13, 15, 14, 15, 15, 16, 16, 16, 18, 17, 
11, 12, 12, 13, 13, 14, 14, 15, 14, 15, 16, 15, 16, 17, 18, 19, 
12, 12, 12, 13, 14, 14, 14, 14, 15, 15, 15, 16, 17, 17, 17, 18, 
12, 13, 13, 14, 14, 15, 14, 15, 16, 16, 17, 17, 17, 18, 18, 18, 
13, 13, 14, 15, 15, 15, 16, 16, 16, 16, 16, 17, 18, 17, 18, 18, 
14, 14, 14, 15, 15, 15, 17, 16, 16, 19, 17, 17, 17, 19, 18, 18, 
13, 14, 15, 16, 16, 16, 17, 16, 17, 17, 18, 18, 21, 20, 21, 18};

const  char t15l[] = {
 3,  5,  6,  8,  8,  9, 10, 10, 10, 11, 11, 12, 12, 12, 13, 14, 
 5,  5,  7,  8,  9,  9, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 
 6,  7,  7,  8,  9,  9, 10, 10, 10, 11, 11, 12, 12, 13, 13, 13, 
 7,  8,  8,  9,  9, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 
 8,  8,  9,  9, 10, 10, 11, 11, 11, 11, 12, 12, 12, 13, 13, 13, 
 9,  9,  9, 10, 10, 10, 11, 11, 11, 11, 12, 12, 13, 13, 13, 14, 
10,  9, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 13, 13, 14, 14, 
10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 14, 
10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 14, 14, 14, 
10, 10, 11, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 
11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 15, 14, 
11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 
12, 12, 11, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 15, 15, 
12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 
13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 14, 15, 
13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15};

const  char t16_5l[] = {
 1,  5,  7,  9, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 14, 11, 
 4,  6,  8,  9, 10, 11, 11, 11, 12, 12, 12, 13, 14, 13, 14, 11, 
 7,  8,  9, 10, 11, 11, 12, 12, 13, 12, 13, 13, 13, 14, 14, 12, 
 9,  9, 10, 11, 11, 12, 12, 12, 13, 13, 14, 14, 14, 15, 15, 13, 
10, 10, 11, 11, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15, 15, 12, 
10, 10, 11, 11, 12, 13, 13, 14, 13, 14, 14, 15, 15, 15, 16, 13, 
11, 11, 11, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 16, 13, 
11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 15, 15, 17, 17, 13, 
11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 13, 
12, 12, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 15, 16, 15, 14, 
12, 13, 12, 13, 14, 14, 14, 14, 15, 16, 16, 16, 17, 17, 16, 13, 
13, 13, 13, 13, 14, 14, 15, 16, 16, 16, 16, 16, 16, 15, 16, 14, 
13, 14, 14, 14, 14, 15, 15, 15, 15, 17, 16, 16, 16, 16, 18, 14, 
15, 14, 14, 14, 15, 15, 16, 16, 16, 18, 17, 17, 17, 19, 17, 14, 
14, 15, 13, 14, 16, 16, 15, 16, 16, 17, 18, 17, 19, 17, 16, 14, 
11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 12};

const  char t16l[] = {
 1,  5,  7,  9, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 14, 10, 
 4,  6,  8,  9, 10, 11, 11, 11, 12, 12, 12, 13, 14, 13, 14, 10, 
 7,  8,  9, 10, 11, 11, 12, 12, 13, 12, 13, 13, 13, 14, 14, 11, 
 9,  9, 10, 11, 11, 12, 12, 12, 13, 13, 14, 14, 14, 15, 15, 12, 
10, 10, 11, 11, 12, 12, 13, 13, 13, 14, 14, 14, 15, 15, 15, 11, 
10, 10, 11, 11, 12, 13, 13, 14, 13, 14, 14, 15, 15, 15, 16, 12, 
11, 11, 11, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 16, 12, 
11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 15, 15, 17, 17, 12, 
11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 12, 
12, 12, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 15, 16, 15, 13, 
12, 13, 12, 13, 14, 14, 14, 14, 15, 16, 16, 16, 17, 17, 16, 12, 
13, 13, 13, 13, 14, 14, 15, 16, 16, 16, 16, 16, 16, 15, 16, 13, 
13, 14, 14, 14, 14, 15, 15, 15, 15, 17, 16, 16, 16, 16, 18, 13, 
15, 14, 14, 14, 15, 15, 16, 16, 16, 18, 17, 17, 17, 19, 17, 13, 
14, 15, 13, 14, 16, 16, 15, 16, 16, 17, 18, 17, 19, 17, 16, 13, 
10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 10};

const  char t24l[] = {
 4,  5,  7,  8,  9, 10, 10, 11, 11, 12, 12, 12, 12, 12, 13, 10, 
 5,  6,  7,  8,  9, 10, 10, 11, 11, 11, 12, 12, 12, 12, 12, 10, 
 7,  7,  8,  9,  9, 10, 10, 11, 11, 11, 11, 12, 12, 12, 13,  9, 
 8,  8,  9,  9, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12,  9, 
 9,  9,  9, 10, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13,  9, 
10,  9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12,  9, 
10, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13,  9, 
11, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 10, 
11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 10, 
11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 10, 
12, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 10, 
12, 12, 11, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 10, 
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 10, 
12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 10, 
13, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 10, 
 9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10,  6};

const  char t32l[]  = {
  1+0,  4+1,  4+1,  5+2,  4+1,  6+2,  5+2,  6+3,
  4+1,  5+2,  5+2,  6+3,  5+2,  6+3,  6+3,  6+4};

const  char t33l[]  = {
  4+0,  4+1,  4+1,  4+2,  4+1,  4+2,  4+2,  4+3,
  4+1,  4+2,  4+2,  4+3,  4+2,  4+3,  4+3,  4+4};


const struct huffcodetab ht[HTN] =
{
  /* xlen, linmax, table, hlen */
  { 0,   0,NULL,NULL},
  { 2,   0,t1HB, t1l},
  { 3,   0,t2HB, t2l},
  { 3,   0,t3HB, t3l},
  { 0,   0,NULL,NULL},/* Apparently not used */
  { 4,   0,t5HB, t5l},
  { 4,   0,t6HB, t6l},
  { 6,   0,t7HB, t7l},
  { 6,   0,t8HB, t8l},
  { 6,   0,t9HB, t9l},
  { 8,   0,t10HB, t10l},
  { 8,   0,t11HB, t11l},
  { 8,   0,t12HB, t12l},
  {16,   0,t13HB, t13l},
  { 0,   0,NULL,  t16_5l},/* Apparently not used */
  {16,   0,t15HB, t15l},

  { 1,   1,t16HB, t16l},
  { 2,   3,t16HB, t16l},
  { 3,   7,t16HB, t16l},
  { 4,  15,t16HB, t16l},
  { 6,  63,t16HB, t16l},
  { 8, 255,t16HB, t16l},
  {10,1023,t16HB, t16l},
  {13,8191,t16HB, t16l},

  { 4,  15,t24HB, t24l},
  { 5,  31,t24HB, t24l},
  { 6,  63,t24HB, t24l},
  { 7, 127,t24HB, t24l},
  { 8, 255,t24HB, t24l},
  { 9, 511,t24HB, t24l},
  {11,2047,t24HB, t24l},
  {13,8191,t24HB, t24l},

  { 0,   0,t32HB, t32l},
  { 0,   0,t33HB, t33l},
};





/*  for (i = 0; i < 16*16; i++) {
 *      largetbl[i] = ((ht[16].hlen[i]) << 16) + ht[24].hlen[i];
 *  }
 */
const unsigned int largetbl[16*16] = {
0x010004, 0x050005, 0x070007, 0x090008, 0x0a0009, 0x0a000a, 0x0b000a, 0x0b000b,
0x0c000b, 0x0c000c, 0x0c000c, 0x0d000c, 0x0d000c, 0x0d000c, 0x0e000d, 0x0a000a,
0x040005, 0x060006, 0x080007, 0x090008, 0x0a0009, 0x0b000a, 0x0b000a, 0x0b000b,
0x0c000b, 0x0c000b, 0x0c000c, 0x0d000c, 0x0e000c, 0x0d000c, 0x0e000c, 0x0a000a,
0x070007, 0x080007, 0x090008, 0x0a0009, 0x0b0009, 0x0b000a, 0x0c000a, 0x0c000b,
0x0d000b, 0x0c000b, 0x0d000b, 0x0d000c, 0x0d000c, 0x0e000c, 0x0e000d, 0x0b0009,
0x090008, 0x090008, 0x0a0009, 0x0b0009, 0x0b000a, 0x0c000a, 0x0c000a, 0x0c000b,
0x0d000b, 0x0d000b, 0x0e000b, 0x0e000c, 0x0e000c, 0x0f000c, 0x0f000c, 0x0c0009,
0x0a0009, 0x0a0009, 0x0b0009, 0x0b000a, 0x0c000a, 0x0c000a, 0x0d000a, 0x0d000b,
0x0d000b, 0x0e000b, 0x0e000c, 0x0e000c, 0x0f000c, 0x0f000c, 0x0f000d, 0x0b0009,
0x0a000a, 0x0a0009, 0x0b000a, 0x0b000a, 0x0c000a, 0x0d000a, 0x0d000b, 0x0e000b,
0x0d000b, 0x0e000b, 0x0e000c, 0x0f000c, 0x0f000c, 0x0f000c, 0x10000c, 0x0c0009,
0x0b000a, 0x0b000a, 0x0b000a, 0x0c000a, 0x0d000a, 0x0d000b, 0x0d000b, 0x0d000b,
0x0e000b, 0x0e000c, 0x0e000c, 0x0e000c, 0x0f000c, 0x0f000c, 0x10000d, 0x0c0009,
0x0b000b, 0x0b000a, 0x0c000a, 0x0c000a, 0x0d000b, 0x0d000b, 0x0d000b, 0x0e000b,
0x0e000c, 0x0f000c, 0x0f000c, 0x0f000c, 0x0f000c, 0x11000d, 0x11000d, 0x0c000a,
0x0b000b, 0x0c000b, 0x0c000b, 0x0d000b, 0x0d000b, 0x0d000b, 0x0e000b, 0x0e000b,
0x0f000b, 0x0f000c, 0x0f000c, 0x0f000c, 0x10000c, 0x10000d, 0x10000d, 0x0c000a,
0x0c000b, 0x0c000b, 0x0c000b, 0x0d000b, 0x0d000b, 0x0e000b, 0x0e000b, 0x0f000c,
0x0f000c, 0x0f000c, 0x0f000c, 0x10000c, 0x0f000d, 0x10000d, 0x0f000d, 0x0d000a,
0x0c000c, 0x0d000b, 0x0c000b, 0x0d000b, 0x0e000b, 0x0e000c, 0x0e000c, 0x0e000c,
0x0f000c, 0x10000c, 0x10000c, 0x10000d, 0x11000d, 0x11000d, 0x10000d, 0x0c000a,
0x0d000c, 0x0d000c, 0x0d000b, 0x0d000b, 0x0e000b, 0x0e000c, 0x0f000c, 0x10000c,
0x10000c, 0x10000c, 0x10000c, 0x10000d, 0x10000d, 0x0f000d, 0x10000d, 0x0d000a,
0x0d000c, 0x0e000c, 0x0e000c, 0x0e000c, 0x0e000c, 0x0f000c, 0x0f000c, 0x0f000c,
0x0f000c, 0x11000c, 0x10000d, 0x10000d, 0x10000d, 0x10000d, 0x12000d, 0x0d000a,
0x0f000c, 0x0e000c, 0x0e000c, 0x0e000c, 0x0f000c, 0x0f000c, 0x10000c, 0x10000c,
0x10000d, 0x12000d, 0x11000d, 0x11000d, 0x11000d, 0x13000d, 0x11000d, 0x0d000a,
0x0e000d, 0x0f000c, 0x0d000c, 0x0e000c, 0x10000c, 0x10000c, 0x0f000c, 0x10000d,
0x10000d, 0x11000d, 0x12000d, 0x11000d, 0x13000d, 0x11000d, 0x10000d, 0x0d000a,
0x0a0009, 0x0a0009, 0x0a0009, 0x0b0009, 0x0b0009, 0x0c0009, 0x0c0009, 0x0c0009,
0x0d0009, 0x0d0009, 0x0d0009, 0x0d000a, 0x0d000a, 0x0d000a, 0x0d000a, 0x0a0006
};

/*  for (i = 0; i < 3*3; i++) {
 *      table23[i] = ((ht[2].hlen[i]) << 16) + ht[3].hlen[i];
 *  }
 */
const unsigned int table23[3*3] = {
0x010002, 0x040003, 0x070007,
0x040004, 0x050004, 0x070007, 
0x060006, 0x070007, 0x080008
};

/*   for (i = 0; i < 4*4; i++) {
 *       table56[i] = ((ht[5].hlen[i]) << 16) + ht[6].hlen[i];
 *   }
 */
const unsigned int table56[4*4] = {
0x010003, 0x040004, 0x070006, 0x080008, 0x040004, 0x050004, 0x080006, 0x090007,
0x070005, 0x080006, 0x090007, 0x0a0008, 0x080007, 0x080007, 0x090008, 0x0a0009
};



/* 
 * 0: MPEG-2 LSF
 * 1: MPEG-1
 * 2: MPEG-2.5 LSF FhG extention                  (1995-07-11 shn)
 */

typedef enum {
    MPEG_2  = 0,
    MPEG_1  = 1,
    MPEG_25 = 2
} MPEG_t;
 
const int  bitrate_table    [3] [16] = {
    { 0,  8, 16, 24, 32, 40, 48, 56,  64,  80,  96, 112, 128, 144, 160, -1 },
    { 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, -1 },
    { 0,  8, 16, 24, 32, 40, 48, 56,  64,  80,  96, 112, 128, 144, 160, -1 },
};

const int  samplerate_table [3]  [4] = { 
    { 22050, 24000, 16000, -1 },      /* MPEG 2 */
    { 44100, 48000, 32000, -1 },      /* MPEG 1 */  
    { 11025, 12000,  8000, -1 },      /* MPEG 2.5 */
};

const char* version_string  [3] = { "2", "1", "2.5" };

const unsigned  header_word [3] = { 0xFFF00000, 0xFFF80000, 0xFFE00000 };

/* This is the scfsi_band table from 2.4.2.7 of the IS */
const int scfsi_band[5] = { 0, 6, 11, 16, 21 };

/* end of tables.c */