umc_mpeg2_dec_blk.cpp

audio-video-codecs.rar语音编解码器

/*//////////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2003-2007 Intel Corporation. All Rights Reserved.
//
*/

#include "umc_defs.h"
#if defined (UMC_ENABLE_MPEG2_VIDEO_DECODER)

#include "umc_mpeg2_dec_defs.h"

static QUANT_MATRIX_TYPE Qmatrix[64] =
{
    16,16,16,16,16,16,16,16,
    16,16,16,16,16,16,16,16,
    16,16,16,16,16,16,16,16,
    16,16,16,16,16,16,16,16,
    16,16,16,16,16,16,16,16,
    16,16,16,16,16,16,16,16,
    16,16,16,16,16,16,16,16,
    16,16,16,16,16,16,16,16,
};

#define UHBITS(code, nbits) (((Ipp32u)(code)) >> (32 - (nbits)))
#define SHBITS(code, nbits) (((Ipp32s)(code)) >> (32 - (nbits)))

#define TAB1_OFFSET_10BIT 248
#define TAB1_OFFSET_15BIT 360
#define TAB1_OFFSET_16BIT 408
#define TAB1_OFFSET_8BIT_INTRA 432
#define TAB1_OFFSET_10BIT_INTRA 680

const Ipp16u MPEG2_VLC_TAB1[] =
{
  0xae2, 0xae2,
  0x6e9, 0x6e9,
  0x12e0, 0x12e0,
  0x6e8, 0x6e8,
  0x6c7, 0x6c7, 0x6c7, 0x6c7,
  0x6c6, 0x6c6, 0x6c6, 0x6c6,
  0xac1, 0xac1, 0xac1, 0xac1,
  0x6c5, 0x6c5, 0x6c5, 0x6c5,
  0x70d,
  0x1b00,
  0x70c,
  0x70b,
  0xb03,
  0xf01,
  0x1700,
  0x70a,
  0xea0, 0xea0, 0xea0, 0xea0, 0xea0, 0xea0, 0xea0, 0xea0, // 0010 10xx
  0x6a4, 0x6a4, 0x6a4, 0x6a4, 0x6a4, 0x6a4, 0x6a4, 0x6a4, // 0011 00xx
  0x6a3, 0x6a3, 0x6a3, 0x6a3, 0x6a3, 0x6a3, 0x6a3, 0x6a3, // 0011 10xx
  0xa80, 0xa80, 0xa80, 0xa80, 0xa80, 0xa80, 0xa80, 0xa80,
  0xa80, 0xa80, 0xa80, 0xa80, 0xa80, 0xa80, 0xa80, 0xa80, // 0100 0xxx
  0x682, 0x682, 0x682, 0x682, 0x682, 0x682, 0x682, 0x682,
  0x682, 0x682, 0x682, 0x682, 0x682, 0x682, 0x682, 0x682, // 0101 0xxx
  0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661, 0x661, // 0110 xxxx
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, 0x640, // 264

  /* 13-bit code */
  0xbaa, 0xba9, 0xfa5, 0x13a3,
  0x17a2, 0x1fa1, 0x1ba1, 0x3fa0,
  0x3ba0, 0x37a0, 0x33a0, 0x7ba,
  0x7b9, 0x7b8, 0x7b7, 0x7b6,
  0x2f80, 0x2f80, 0xb88, 0xb88,
  0xf84, 0xf84, 0x2b80, 0x2b80,
  0x1382, 0x1382, 0xb87, 0xb87,
  0x795, 0x795, 0x794, 0x794,
  0x2780, 0x2780, 0x793, 0x793,
  0x792, 0x792, 0x1781, 0x1781,
  0xf83, 0xf83, 0x2380, 0x2380,
  0xb86, 0xb86, 0x791, 0x791, // 312

  /* 10-bit code  */
  0x750, 0x750, 0x750, 0x750, 0x750, 0x750, 0x750, 0x750,
  0xb45, 0xb45, 0xb45, 0xb45, 0xb45, 0xb45, 0xb45, 0xb45,
  0x1f40, 0x1f40, 0x1f40, 0x1f40, 0x1f40, 0x1f40, 0x1f40, 0x1f40,
  0xf42, 0xf42, 0xf42, 0xf42, 0xf42, 0xf42, 0xf42, 0xf42,
  0x1341, 0x1341, 0x1341, 0x1341, 0x1341, 0x1341, 0x1341, 0x1341,
  0x74f, 0x74f, 0x74f, 0x74f, 0x74f, 0x74f, 0x74f, 0x74f,
  0x74e, 0x74e, 0x74e, 0x74e, 0x74e, 0x74e, 0x74e, 0x74e,
  0xb44, 0xb44, 0xb44, 0xb44, 0xb44, 0xb44, 0xb44, 0xb44, // 376

  /* 15-bit code */
  0xa3e0, 0x9fe0, 0x9be0, 0x97e0,
  0x93e0, 0x8fe0, 0x8be0, 0x87e0,
  0x83e0, 0x3be1, 0x37e1, 0x33e1,
  0x2fe1, 0x2be1, 0x27e1, 0x23e1,
  0x7fc0, 0x7fc0, 0x7bc0, 0x7bc0,
  0x77c0, 0x77c0, 0x73c0, 0x73c0,
  0x6fc0, 0x6fc0, 0x6bc0, 0x6bc0,
  0x67c0, 0x67c0, 0x63c0, 0x63c0,
  0x5fc0, 0x5fc0, 0x5bc0, 0x5bc0,
  0x57c0, 0x57c0, 0x53c0, 0x53c0,
  0x4fc0, 0x4fc0, 0x4bc0, 0x4bc0,
  0x47c0, 0x47c0, 0x43c0, 0x43c0, // 424
  /* 16-bit code */
  0x4a01, 0x4601, 0x4201, 0x3e01,
  0xe06, 0xa10, 0xa0f, 0xa0e,
  0xa0d, 0xa0c, 0xa0b, 0x61f,
  0x61e, 0x61d, 0x61c, 0x61b, // 440

  /* 8-bit code for B15 */
  0x6e7, 0x6e7, 0x6e8, 0x6e8,
  0x6e6, 0x6e6, 0xae2, 0xae2,
  0x1ec0, 0x1ec0, 0x1ec0, 0x1ec0,
  0x1ac0, 0x1ac0, 0x1ac0, 0x1ac0,
  0x6c4, 0x6c4, 0x6c4, 0x6c4,
  0x6c5, 0x6c5, 0x6c5, 0x6c5,
  0x1701, 0x70b, 0x2f00, 0x2b00,
  0x70d, 0x70c, 0xb03, 0x1301,
  0x6a2, 0x6a2, 0x6a2, 0x6a2,
  0x6a2, 0x6a2, 0x6a2, 0x6a2,
  0xaa1, 0xaa1, 0xaa1, 0xaa1,
  0xaa1, 0xaa1, 0xaa1, 0xaa1,
  0x6a3, 0x6a3, 0x6a3, 0x6a3,
  0x6a3, 0x6a3, 0x6a3, 0x6a3,
  0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661,
  0x661, 0x661, 0x661, 0x661,
  0xffff, 0xffff, 0xffff, 0xffff,
  0xffff, 0xffff, 0xffff, 0xffff,
  0xffff, 0xffff, 0xffff, 0xffff,
  0xffff, 0xffff, 0xffff, 0xffff,
  0xe80, 0xe80, 0xe80, 0xe80,
  0xe80, 0xe80, 0xe80, 0xe80,
  0xe80, 0xe80, 0xe80, 0xe80,
  0xe80, 0xe80, 0xe80, 0xe80,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0x640, 0x640, 0x640, 0x640,
  0xa60, 0xa60, 0xa60, 0xa60,
  0xa60, 0xa60, 0xa60, 0xa60,
  0xa60, 0xa60, 0xa60, 0xa60,
  0xa60, 0xa60, 0xa60, 0xa60,
  0xa60, 0xa60, 0xa60, 0xa60,
  0xa60, 0xa60, 0xa60, 0xa60,
  0xa60, 0xa60, 0xa60, 0xa60,
  0xa60, 0xa60, 0xa60, 0xa60,
  0x12a0, 0x12a0, 0x12a0, 0x12a0,
  0x12a0, 0x12a0, 0x12a0, 0x12a0,
  0x16a0, 0x16a0, 0x16a0, 0x16a0,
  0x16a0, 0x16a0, 0x16a0, 0x16a0,
  0x6e9, 0x6e9, 0xee1, 0xee1,
  0x6ea, 0x6ea, 0x22e0, 0x22e0,
  0x26e0, 0x26e0, 0x3300, 0x3700,
  0xf02, 0xb04, 0x3b00, 0x3f00, // 688
  /* 10-bit code for B15 */
  0xb25, 0xb25, 0x72e, 0x72e,
  0x1342, 0x750, 0x72f, 0x72f,
};

const Ipp8u MPEG2_DCSIZE_TAB[128] = {
  0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21,
  0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
  0x30, 0x30, 0x30, 0x30, 0x33, 0x33, 0x33, 0x33,
  0x34, 0x34, 0x34, 0x34, 0x45, 0x45, 0x56, 0x00,
  0x67, 0x67, 0x67, 0x67, 0x67, 0x67, 0x67, 0x67,
  0x67, 0x67, 0x67, 0x67, 0x67, 0x67, 0x67, 0x67,
  0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78, 0x78,
  0x89, 0x89, 0x89, 0x89, 0x9a, 0x9a, 0x9b, 0x9b,
  0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
  0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21, 0x21,
  0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
  0x33, 0x33, 0x33, 0x33, 0x44, 0x44, 0x55, 0x00,
  0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
  0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
  0x77, 0x77, 0x77, 0x77, 0x77, 0x77, 0x77, 0x77,
  0x88, 0x88, 0x88, 0x88, 0x99, 0x99, 0xaa, 0xbb
};

DECLALIGN(16)
static SCAN_MATRIX_TYPE scan_tbl[2][64] =
{
  {
     0, 1, 8, 16,9, 2, 3, 10,
     17,24,32,25,18,11,4, 5,
     12,19,26,33,40,48,41,34,
     27,20,13, 6, 7,14,21,28,
     35,42,49,56,57,50,43,36,
     29,22,15,23,30,37,44,51,
     58,59,52,45,38,31,39,46,
     53,60,61,54,47,55,62,63
  },
  {
     0, 8, 16,24,1, 9, 2, 10,
     17,25,32,40,48,56,57,49,
     41,33,26,18, 3,11,4, 12,
     19,27,34,42,50,58,35,43,
     51,59,20,28,5 ,13,6 ,14,
     21,29,36,44,52,60,37,45,
     53,61,22,30,7 ,15,23,31,
     38,46,54,62,39,47,55,63
  }
};


Ipp8u default_intra_quantizer_matrix[64] =
{
   8, 16, 16, 19, 16, 19, 22, 22,
  22, 22, 22, 22, 26, 24, 26, 27,
  27, 27, 26, 26, 26, 26, 27, 27,
  27, 29, 29, 29, 34, 34, 34, 29,
  29, 29, 27, 27, 29, 29, 32, 32,
  34, 34, 37, 38, 37, 35, 35, 34,
  35, 38, 38, 40, 40, 40, 48, 48,
  46, 46, 56, 56, 58, 69, 69, 83
};

/***************************************************************/

#define DEF_VARS()                                                  \
  SCAN_MATRIX_TYPE *scanMatrix = pQuantSpec->scanMatrix;            \
  QUANT_MATRIX_TYPE *pQuantMatrix = pQuantSpec->quantMatrix;        \
  DEF_BLOCK(pDstBlock);                                             \
  DEF_BLOCK(idct);                                                  \
  Ipp8u *BS_curr_ptr;                                               \
  Ipp32s BS_bit_offset;                                             \
  Ipp32s i, j, k;                                                   \
  Ipp32s val, run, len, sign;                                       \
  Ipp32u tbl;                                                       \
  Ipp32u code

/***************************************************************/

/* ///////////////////////////////////////////////////////////////////////////
//  Name:
//    ippiDecodeInter8x8IDCTAdd_MPEG2_1u8u
//
//  Purpose:
//    Performs VLC decoding of DCT coefficients for one inter 8x8 block,
//    dequantization of coefficients, inverse DCT and addition of resulted
//    8x8 block to destination.
//
//  Parameters:
//    ppBitStream      Pointer to the pointer to the current byte in
//                     the bitstream, it is updated after block decoding.
//    pBitOffset       Pointer to the bit position in the byte pointed by
//                     *ppBitStream, it is updated after block decoding.
//                     Must be in the range [0, 7].
//    pQuantSpec       Pointer to the structure IppiDecodeInterSpec_MPEG2
//    QP               Quantization parameter.
//    pSrcDst          Pointer to the 8x8 block in the destination image
//    srcDstStep       Step through the destination image
//
//  Returns:
//    ippStsNoErr        No error.
//    ippStsNullPtrErr   One of the specified pointers is NULL.
//    ippStsVLCErr       An illegal code is detected through the
//                       stream processing.
*/

MP2_FUNC(IppStatus, ippiDecodeInter8x8IDCTAdd_MPEG2_1u8u, (
    Ipp8u**                            BitStream_curr_ptr,
    Ipp32s*                            BitStream_bit_offset,
    IppiDecodeInterSpec_MPEG2*         pQuantSpec,
    Ipp32s                             quant,
    Ipp8u*                             pSrcDst,
    Ipp32s                             srcDstStep))
{
  DEF_VARS();
  Ipp32s mask;
  Ipp32s q;

  COPY_BITSTREAM(BS, *BitStream)
  SHOW_HI9BITS(BS, code);

  if (pQuantMatrix) {
    if (code & 0x80000000) { /* first 2-bit code */
      val = quant*pQuantMatrix[0];
      val = (val + val + val) >> 5;
      sign = SHBITS(code + code, 1);
      APPLY_SIGN(val, sign);
      if ((code & 0x30000000) == 0x20000000) { /* end */
        SKIP_BITS(BS, 4);
        COPY_BITSTREAM(*BitStream, BS)
        IDCT_INTER1(val, idct, pSrcDst, srcDstStep);
        return ippStsOk;
      }
      for (k = 0; k < 64; k++) {
        pDstBlock[k] = 0;
      }
      pDstBlock[0] = val;
      mask = 1 ^ val;
      SKIP_BITS(BS, 2);
      SHOW_HI9BITS(BS, code);
      i = 0;
    } else {
      for (k = 0; k < 64; k++) {
        pDstBlock[k] = 0;
      }
      i = -1;
      mask = 1;
    }