mp3dec_own_int.h

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) 2006 Intel Corporation. All Rights Reserved.
//
*/

#ifndef __MP3DEC_OWN_INT_H__
#define __MP3DEC_OWN_INT_H__

#include "math.h"
#include "mp3dec_own.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef Ipp32s sampleint[2][576];
typedef Ipp32s sampleintrw[2][18][32];

struct _MP3Dec {
    MP3Dec_com com;
    VM_ALIGN16_DECL(Ipp32u) global[2880];
    VM_ALIGN16_DECL(Ipp32s) prevblk[2][576];
    Ipp32f tmp_bfr[32];
    Ipp32s filter_bfr[2][16][64];

    sampleint *smpl_xr;       // out of dequantizer
    sampleint *smpl_ro;       // out of reordering
    sampleint *smpl_re;       // out of antialiasing
    sampleintrw *smpl_rw;     // out of imdct
    sampleshort *smpl_sb;     // out of subband synth

//    IppsMDCTInvSpec_32f *pMDCTSpecShort;
//    IppsMDCTInvSpec_32f *pMDCTSpecLong;
//    IppsDCTFwdSpec_32f  *pDCTSpecFB;

//    Ipp8u *mdct_buffer;

    VM_ALIGN16_DECL(Ipp32s) synth_buf[IPP_MP3_V_BUF_LEN*2];
    Ipp32s synth_ind[2];

    Ipp32s dctnum_prev[2];

    Ipp16s m_ptr[2][2];
    Ipp16s m_even[2];
};

Ipp32s mp3idec_decode_data_LayerI(MP3Dec *state);
Ipp32s mp3idec_decode_data_LayerII(MP3Dec *state);
MP3Status mp3idec_decode_data_LayerIII(MP3Dec *state);

extern Ipp32s mp3dec_Dcoef[64][15];

#define MUL32_MP3_32S(x, y) \
  (Ipp32s)(((Ipp64s)((Ipp64s)(x) * (Ipp64s)(y)))>>32)

// #define FMUL32_MP3_32S(x, y) MUL32_MP3_32S((x) << 1, y)

#define MUL32_MP3_64S(x, y) \
  (Ipp64s)(((Ipp64s)((Ipp64s)(x) * (Ipp64s)(y))))
#define MUL32_MP3_32S64S(x, y) \
  (((Ipp64s)((Ipp64s)(x) * (Ipp64s)(y))) >> 32)

#ifdef __cplusplus
}
#endif

#endif