g729ev_main_prm.c

最新的ITU-T的宽带语音编解码标准G.729.1,是对原先的G.729的最好的调整.码流输出速率可以进行自适应调整.满足未来通信要求.希望对大家有所帮助.

#if(WMOPS)
  move16();
  move16();
#endif

  /* Get 8k bistream */
  /* --> first subframe (80 bits) */
  IF(sub(decstat->decStG729.g729b_bst, 1) != 0)
  {
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
    bit_ptr += 8;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 10);
    bit_ptr += 10;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
    bit_ptr += 8;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 1);
    bit_ptr += 1;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
    bit_ptr += 7;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
    bit_ptr += 5;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
    bit_ptr += 7;
#if(WMOPS)
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
#endif
  } ELSE
  {                             /* G.729 mode */
    IF(sub(decstat->decStG729.ftyp[0], 1) == 0)
    {                           /* speech frame (80 bits) */
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
      bit_ptr += 8;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 10);
      bit_ptr += 10;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
      bit_ptr += 8;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 1);
      bit_ptr += 1;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
      bit_ptr += 13;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
      bit_ptr += 4;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
      bit_ptr += 7;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
      bit_ptr += 5;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
      bit_ptr += 13;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
      bit_ptr += 4;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
      bit_ptr += 7;
#if(WMOPS)
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
#endif
    } ELSE if (sub(decstat->decStG729.ftyp[0], 2) == 0)
    {                           /* SID frame (15 bits) */
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 1);
      bit_ptr += 1;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
      bit_ptr += 5;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
      bit_ptr += 4;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
      bit_ptr += 5;
      prm_ptr += 7;
#if(WMOPS)
      move16();
      move16();
      move16();
      move16();
      move16();
#endif
    }
    ELSE if   (sub(decstat->decStG729.ftyp[0], 0) == 0)
    {                           /* not transmited frame (0 bit) */
      prm_ptr += 11;
#if(WMOPS)
      move16();
#endif
    }
  }

  if (sub(decstat->g729b_bst, 1) == 0)
  {
    bit_ptr += 2;               /* Bypass syncword and number of bits in g729 second frame */
#if(WMOPS)
    move16();
#endif
  }

  /* --> second subframe (80 bits) */
  prm_ptr += 6;                 /* jump to beginning of 2nd 8k subframe coder parameters */
#if(WMOPS)
  move16();
#endif
  IF(sub(decstat->decStG729.g729b_bst, 1) != 0)
  {
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
    bit_ptr += 8;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 10);
    bit_ptr += 10;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
    bit_ptr += 8;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 1);
    bit_ptr += 1;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
    bit_ptr += 7;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
    bit_ptr += 5;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
    bit_ptr += 7;
#if(WMOPS)
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
#endif
  }
  ELSE
  {                             /* G.729B mode */
    IF(sub(decstat->decStG729.ftyp[1], 1) == 0)
    {                           /* speech frame (80 bits) */
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
      bit_ptr += 8;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 10);
      bit_ptr += 10;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 8);
      bit_ptr += 8;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 1);
      bit_ptr += 1;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
      bit_ptr += 13;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
      bit_ptr += 4;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
      bit_ptr += 7;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
      bit_ptr += 5;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
      bit_ptr += 13;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
      bit_ptr += 4;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
      bit_ptr += 7;
#if(WMOPS)
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
      move16();
#endif
    }
    ELSE if   (sub(decstat->decStG729.ftyp[1], 2) == 0)
    {                           /* SID frame (15 bits) */
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 1);
      bit_ptr += 1;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
      bit_ptr += 5;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
      bit_ptr += 4;
      *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
      bit_ptr += 5;
      prm_ptr += 7;
#if(WMOPS)
      move16();
      move16();
      move16();
      move16();
#endif
    }
    ELSE if   (sub(decstat->decStG729.ftyp[1], 0) == 0)
    {                           /* not transmited frame (0 bit) */
      prm_ptr += 11;
#if(WMOPS)
      move16();
#endif
    }
  }

  IF(rate >= 12000)
  {
    /* Get 12k bitstream */
    /* --> first subframe (40 bits) */
    prm_ptr -= 17;              /* jump to the beginning of the 1st 12k subframe coder parameters */
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 3);
    bit_ptr += 3;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 3);
    bit_ptr += 3;
    /* --> second subframe (40 bits) */
    prm_ptr += 11;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 3);
    bit_ptr += 3;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 13);
    bit_ptr += 13;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 3);
    bit_ptr += 3;
    /* --> get FEC information */
    bit_FEC[0] = itu_192_bitstream[197];
    bit_FEC[1] = itu_192_bitstream[237];
    ind_FER[0] = G729EV_MAIN_bin2int(bit_FEC, 2);
#if(WMOPS)
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
#endif
  }

  IF(rate >= 14000)
  {
    /* Get 14k bitstream (33 bits) */
    /* prm_ptr -= 8;    jump to TDBWE coder parameters */
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
    bit_ptr += 5;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
    bit_ptr += 7;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 7);
    bit_ptr += 7;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
    bit_ptr += 5;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 5);
    bit_ptr += 5;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
    ind_FER[2] = G729EV_MAIN_bin2int(bit_ptr, 7);
    bit_ptr += 7;
#if(WMOPS)
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
    move16();
#endif
  }

  IF(rate >= 16000)
  {
    ind_FER[1] = G729EV_MAIN_bin2int(bit_ptr, 5);
    bit_ptr += 5;
    *prm_ptr++ = G729EV_MAIN_bin2int(bit_ptr, 4);
    bit_ptr += 4;
#if(WMOPS)
    move16();
    move16();
#endif

    /* TDAC bitstream is read in TDAC decoder */
  }
}