コード例 #1
0
static void sbr_process_channel(sbr_info *sbr, real_t *channel_buf, qmf_t X[MAX_NTSR][64],
                                uint8_t ch, uint8_t dont_process,
                                const uint8_t downSampledSBR)
{
    int16_t k, l;

    (void)downSampledSBR;
#ifdef DRM
    if (sbr->Is_DRM_SBR)
    {
        sbr->bsco = max((int32_t)sbr->maxAACLine*32/(int32_t)sbr->frame_len - (int32_t)sbr->kx, 0);
    } else {
#endif
        sbr->bsco = 0;
#ifdef DRM
    }
#endif


//#define PRE_QMF_PRINT
#ifdef PRE_QMF_PRINT
    {
        int i;
        for (i = 0; i < 1024; i++)
        {
            printf("%d\n", channel_buf[i]);
        }
    }
#endif


    /* subband analysis */
    if (dont_process)
        sbr_qmf_analysis_32(sbr, &sbr->qmfa[ch], channel_buf, sbr->Xsbr[ch], sbr->tHFGen, 32);
    else
        sbr_qmf_analysis_32(sbr, &sbr->qmfa[ch], channel_buf, sbr->Xsbr[ch], sbr->tHFGen, sbr->kx);

    if (!dont_process)
    {
#if 1
        /* insert high frequencies here */
        /* hf generation using patching */
        hf_generation(sbr, sbr->Xsbr[ch], sbr->Xsbr[ch]
#ifdef SBR_LOW_POWER
            ,deg
#endif
            ,ch);
#endif

#ifdef SBR_LOW_POWER
        for (l = sbr->t_E[ch][0]; l < sbr->t_E[ch][sbr->L_E[ch]]; l++)
        {
            for (k = 0; k < sbr->kx; k++)
            {
                QMF_RE(sbr->Xsbr[ch][sbr->tHFAdj + l][k]) = 0;
            }
        }
#endif

#if 1
        /* hf adjustment */
        hf_adjustment(sbr, sbr->Xsbr[ch]
#ifdef SBR_LOW_POWER
            ,deg
#endif
            ,ch);
#endif
    }

    if ((sbr->just_seeked != 0) || dont_process)
    {
        for (l = 0; l < sbr->numTimeSlotsRate; l++)
        {
            for (k = 0; k < 32; k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
#ifndef SBR_LOW_POWER
                QMF_IM(X[l][k]) = QMF_IM(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
#endif
            }
            for (k = 32; k < 64; k++)
            {
                QMF_RE(X[l][k]) = 0;
#ifndef SBR_LOW_POWER
                QMF_IM(X[l][k]) = 0;
#endif
            }
        }
    } else {
        for (l = 0; l < sbr->numTimeSlotsRate; l++)
        {
            uint8_t kx_band, M_band, bsco_band;

            if (l < sbr->t_E[ch][0])
            {
                kx_band = sbr->kx_prev;
                M_band = sbr->M_prev;
                bsco_band = sbr->bsco_prev;
            } else {
                kx_band = sbr->kx;
                M_band = sbr->M;
                bsco_band = sbr->bsco;
            }

#ifndef SBR_LOW_POWER
            for (k = 0; k < kx_band + bsco_band; k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
                QMF_IM(X[l][k]) = QMF_IM(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
            }
            for (k = kx_band + bsco_band; k < kx_band + M_band; k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
                QMF_IM(X[l][k]) = QMF_IM(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
            }
            for (k = max(kx_band + bsco_band, kx_band + M_band); k < 64; k++)
            {
                QMF_RE(X[l][k]) = 0;
                QMF_IM(X[l][k]) = 0;
            }
#else
            for (k = 0; k < kx_band + bsco_band; k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
            }
            for (k = kx_band + bsco_band; k < min(kx_band + M_band, 63); k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
            }
            for (k = max(kx_band + bsco_band, kx_band + M_band); k < 64; k++)
            {
                QMF_RE(X[l][k]) = 0;
            }
            QMF_RE(X[l][kx_band - 1 + bsco_band]) +=
                QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][kx_band - 1 + bsco_band]);
#endif
        }
    }
}
コード例 #2
0
static void sbr_process_channel(sbr_info *sbr, real_t *channel_buf, qmf_t X[MAX_NTSR][64],
                                uint8_t ch, uint8_t dont_process)
{
    int16_t i, k, l;

#ifdef SBR_LOW_POWER
    ALIGN real_t deg[64];
#endif

    if (sbr->frame == 0)
    {
        uint8_t j;
        sbr->qmfa[ch] = qmfa_init(32);
        sbr->qmfs[ch] = qmfs_init(64);

        for (j = 0; j < 5; j++)
        {
            sbr->G_temp_prev[ch][j] = faad_malloc(64*sizeof(real_t));
            sbr->Q_temp_prev[ch][j] = faad_malloc(64*sizeof(real_t));
        }

        memset(sbr->Xsbr[ch], 0, (sbr->numTimeSlotsRate+sbr->tHFGen)*64 * sizeof(qmf_t));
        memset(sbr->Xcodec[ch], 0, (sbr->numTimeSlotsRate+sbr->tHFGen)*32 * sizeof(qmf_t));
    }

    /* subband analysis */
    if (dont_process)
        sbr_qmf_analysis_32(sbr, sbr->qmfa[ch], channel_buf, sbr->Xcodec[ch], sbr->tHFGen, 32);
    else
        sbr_qmf_analysis_32(sbr, sbr->qmfa[ch], channel_buf, sbr->Xcodec[ch], sbr->tHFGen, sbr->kx);

    if (!dont_process)
    {
#if 1
        /* insert high frequencies here */
        /* hf generation using patching */
        hf_generation(sbr, sbr->Xcodec[ch], sbr->Xsbr[ch]
#ifdef SBR_LOW_POWER
            ,deg
#endif
            ,ch);
#endif

#ifdef SBR_LOW_POWER
        for (l = sbr->t_E[ch][0]; l < sbr->t_E[ch][sbr->L_E[ch]]; l++)
        {
            for (k = 0; k < sbr->kx; k++)
            {
                QMF_RE(sbr->Xsbr[ch][sbr->tHFAdj + l][k]) = 0;
            }
        }
#endif

#if 1
        /* hf adjustment */
        hf_adjustment(sbr, sbr->Xsbr[ch]
#ifdef SBR_LOW_POWER
            ,deg
#endif
            ,ch);
#endif
    }

    if ((sbr->just_seeked != 0) || dont_process)
    {
        for (l = 0; l < sbr->numTimeSlotsRate; l++)
        {
            for (k = 0; k < 32; k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xcodec[ch][l + sbr->tHFAdj][k]);
#ifndef SBR_LOW_POWER
                QMF_IM(X[l][k]) = QMF_IM(sbr->Xcodec[ch][l + sbr->tHFAdj][k]);
#endif
            }
            for (k = 32; k < 64; k++)
            {
                QMF_RE(X[l][k]) = 0;
#ifndef SBR_LOW_POWER
                QMF_IM(X[l][k]) = 0;
#endif
            }
        }
    } else {
        for (l = 0; l < sbr->numTimeSlotsRate; l++)
        {
            uint8_t xover_band;

            if (l < sbr->t_E[ch][0])
                xover_band = sbr->kx_prev;
            else
                xover_band = sbr->kx;

            for (k = 0; k < xover_band; k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xcodec[ch][l + sbr->tHFAdj][k]);
#ifndef SBR_LOW_POWER
                QMF_IM(X[l][k]) = QMF_IM(sbr->Xcodec[ch][l + sbr->tHFAdj][k]);
#endif
            }
            for (k = xover_band; k < 64; k++)
            {
                QMF_RE(X[l][k]) = QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
#ifndef SBR_LOW_POWER
                QMF_IM(X[l][k]) = QMF_IM(sbr->Xsbr[ch][l + sbr->tHFAdj][k]);
#endif
            }
#ifdef SBR_LOW_POWER
            QMF_RE(X[l][xover_band - 1]) += QMF_RE(sbr->Xsbr[ch][l + sbr->tHFAdj][xover_band - 1]);
#endif
        }
    }

    for (i = 0; i < sbr->tHFGen; i++)
    {
        memmove(sbr->Xcodec[ch][i], sbr->Xcodec[ch][i+sbr->numTimeSlotsRate], 32 * sizeof(qmf_t));
        memmove(sbr->Xsbr[ch][i], sbr->Xsbr[ch][i+sbr->numTimeSlotsRate], 64 * sizeof(qmf_t));
    }
}
コード例 #3
0
ファイル: SBR_DEC.C プロジェクト: en-vorobiov/mpxplay
void sbrDecodeFrame(sbr_info *sbr, real_t *left_channel,
                    real_t *right_channel, uint8_t id_aac,
                    uint8_t just_seeked)
{
 int16_t i, k, l;

 uint8_t dont_process = 0;
 uint8_t ch, channels, ret;
 real_t *ch_buf;

 sbr->id_aac = id_aac;
 channels = (id_aac == ID_SCE) ? 1 : 2;

 ret = sbr_extension_data(&sbr->ld, sbr, id_aac);

 ret = (sbr->ld.error)? sbr->ld.error : ret;

 if(ret || (sbr->header_count == 0))
  dont_process = 1;

 if(just_seeked)
  sbr->just_seeked = 1;
 else
  sbr->just_seeked = 0;

 for (ch = 0; ch < channels; ch++){
  if (ch == 0)
   ch_buf = left_channel;
  else
   ch_buf = right_channel;

  for (i = 0; i < tHFAdj; i++){
   int8_t j;
   for (j = sbr->kx_prev; j < sbr->kx; j++){
    QMF_RE(sbr->Xcodec[ch][i*32 + j]) = 0;
    QMF_IM(sbr->Xcodec[ch][i*32 + j]) = 0;
   }
  }

  sbr_qmf_analysis_32(sbr->qmfa[ch], ch_buf, sbr->Xcodec[ch], tHFGen);

  if(!dont_process){
   hf_generation(sbr, sbr->Xcodec[ch], sbr->Xsbr[ch],ch);
   hf_adjustment(sbr, sbr->Xsbr[ch],ch);
  }

  if((sbr->just_seeked != 0) || dont_process){
   for (l = 0; l < 32; l++){
    for (k = 0; k < 32; k++){
     QMF_RE(sbr->temp_X[l * 64 + k]) = QMF_RE(sbr->Xcodec[ch][(l + tHFAdj)*32 + k]);
     QMF_IM(sbr->temp_X[l * 64 + k]) = QMF_IM(sbr->Xcodec[ch][(l + tHFAdj)*32 + k]);
    }
    for (k = 32; k < 64; k++){
     QMF_RE(sbr->temp_X[l * 64 + k]) = 0;
     QMF_IM(sbr->temp_X[l * 64 + k]) = 0;
    }
   }
  }else{
   for (l = 0; l < 32; l++){
    uint8_t xover_band;

    if (l < sbr->t_E[ch][0])
     xover_band = sbr->kx_prev;
    else
     xover_band = sbr->kx;

    for (k = 0; k < xover_band; k++){
     QMF_RE(sbr->temp_X[l * 64 + k]) = QMF_RE(sbr->Xcodec[ch][(l + tHFAdj)*32 + k]);
     QMF_IM(sbr->temp_X[l * 64 + k]) = QMF_IM(sbr->Xcodec[ch][(l + tHFAdj)*32 + k]);
    }
    for (k = xover_band; k < 64; k++){
     QMF_RE(sbr->temp_X[l * 64 + k]) = QMF_RE(sbr->Xsbr[ch][(l + tHFAdj)*64 + k]);
     QMF_IM(sbr->temp_X[l * 64 + k]) = QMF_IM(sbr->Xsbr[ch][(l + tHFAdj)*64 + k]);
    }
   }
  }

  sbr_qmf_synthesis_64(sbr->qmfs[ch], (const complex_t*)sbr->temp_X, ch_buf);

  for (i = 0; i < 32; i++){
   int8_t j;
   for (j = 0; j < tHFGen; j++){
    QMF_RE(sbr->Xcodec[ch][j*32 + i]) = QMF_RE(sbr->Xcodec[ch][(j+32)*32 + i]);
    QMF_IM(sbr->Xcodec[ch][j*32 + i]) = QMF_IM(sbr->Xcodec[ch][(j+32)*32 + i]);
   }
  }
  for (i = 0; i < 64; i++){
   int8_t j;
   for (j = 0; j < tHFGen; j++){
    QMF_RE(sbr->Xsbr[ch][j*64 + i]) = QMF_RE(sbr->Xsbr[ch][(j+32)*64 + i]);
    QMF_IM(sbr->Xsbr[ch][j*64 + i]) = QMF_IM(sbr->Xsbr[ch][(j+32)*64 + i]);
   }
  }
 }

 if (sbr->bs_header_flag)
  sbr->just_seeked = 0;

 if (sbr->header_count != 0){
  for (ch = 0; ch < channels; ch++)
   sbr_save_prev_data(sbr, ch);
 }

 sbr->frame++;
}