static int getics(faacDecHandle hDecoder, Info *info, int common_window, byte *win, byte *wshape,
byte *group, byte *max_sfb, int *lpflag, int *prstflag,
byte *cb_map, Float *coef, int *global_gain,
int *factors,
NOK_LT_PRED_STATUS *nok_ltp_status,
TNS_frame_info *tns)
{
int nsect, i, cb, top, bot, tot_sfb;
byte sect[ 2*(MAXBANDS+1) ];
memset(sect, 0, sizeof(sect));
/*
* global gain
*/
*global_gain = (short)faad_getbits(&hDecoder->ld, LEN_SCL_PCM);
if (!common_window) {
if (!get_ics_info(hDecoder, win, wshape, group, max_sfb, lpflag, prstflag,
nok_ltp_status, NULL, 0))
return 0;
}
CopyMemory(info, hDecoder->winmap[*win], sizeof(Info));
/* calculate total number of sfb for this grouping */
if (*max_sfb == 0) {
tot_sfb = 0;
}
else {
i=0;
tot_sfb = info->sfb_per_sbk[0];
while (group[i++] < info->nsbk) {
tot_sfb += info->sfb_per_sbk[0];
}
}
/*
* section data
*/
nsect = huffcb(hDecoder, sect, info->sectbits, tot_sfb, info->sfb_per_sbk[0], *max_sfb);
if(nsect==0 && *max_sfb>0)
return 0;
/* generate "linear" description from section info
* stored as codebook for each scalefactor band and group
*/
if (nsect) {
bot = 0;
for (i=0; i<nsect; i++) {
cb = sect[2*i];
top = sect[2*i + 1];
for (; bot<top; bot++)
*cb_map++ = cb;
bot = top;
}
} else {
for (i=0; i<MAXBANDS; i++)
cb_map[i] = 0;
}
/* calculate band offsets
* (because of grouping and interleaving this cannot be
* a constant: store it in info.bk_sfb_top)
*/
calc_gsfb_table(info, group);
/*
* scale factor data
*/
if(!hufffac(hDecoder, info, group, nsect, sect, *global_gain, factors))
return 0;
/*
* Pulse coding
*/
if ((hDecoder->pulse_info.pulse_data_present = faad_get1bit(&hDecoder->ld))) { /* pulse data present */
if (info->islong) {
get_pulse_nc(hDecoder, &hDecoder->pulse_info);
} else {
/* CommonExit(1,"Pulse data not allowed for short blocks"); */
return 0;
}
}
/*
* tns data
*/
if (faad_get1bit(&hDecoder->ld)) { /* tns present */
get_tns(hDecoder, info, tns);
}
else {
clr_tns(info, tns);
}
if (faad_get1bit(&hDecoder->ld)) { /* gain control present */
/* CommonExit(1, "Gain control not implemented"); */
return 0;
}
return huffspec(hDecoder, info, nsect, sect, factors, coef);
}
/*----------------------------------------------------------------------------
; FUNCTION CODE
----------------------------------------------------------------------------*/
Int getics(
Int id_syn_ele,
BITS *pInputStream,
Int common_window,
tDec_Int_File *pVars,
tDec_Int_Chan *pChVars,
Int group[],
Int *pMax_sfb,
Int *pCodebookMap,
TNS_frame_info *pTnsFrameInfo,
FrameInfo **pWinMap,
PulseInfo *pPulseInfo,
SectInfo sect[])
{
/*----------------------------------------------------------------------------
; Define all local variables
----------------------------------------------------------------------------*/
Int status = SUCCESS;
Int nsect = 0;
Int i;
Int cb;
Int sectWidth;
Int sectStart;
Int totSfb;
Int *pGroup;
FrameInfo *pFrameInfo;
Int global_gain; /* originally passed in from huffdecode */
Bool present;
/*----------------------------------------------------------------------------
; Function body here
----------------------------------------------------------------------------*/
pGroup = group;
/* read global gain from Input bitstream */
global_gain = get9_n_lessbits(LEN_SCL_PCM, pInputStream);
if (common_window == FALSE)
{
status = get_ics_info(pVars->mc_info.audioObjectType,
pInputStream,
common_window,
&pChVars->wnd,
&pChVars->wnd_shape_this_bk,
group,
pMax_sfb,
pWinMap,
&pChVars->pShareWfxpCoef->lt_status,
NULL);
}
pFrameInfo = pWinMap[pChVars->wnd];
/* at least, number of window should be 1 or 8 */
if ((pFrameInfo->num_win != 1) && (pFrameInfo->num_win != 8))
{
status = 1;
}
/* First, calculate total number of scalefactor bands
* for this grouping. Then, decode section data
*/
if (*pMax_sfb > 0)
{
/* calculate total number of sfb */
i = 0;
totSfb = 0;
do
{
totSfb++;
}
while (*pGroup++ < pFrameInfo->num_win);
totSfb *= pFrameInfo->sfb_per_win[0];
/* decode section data */
nsect = huffcb(sect,
pInputStream,
pFrameInfo->sectbits,
totSfb,
pFrameInfo->sfb_per_win[0],
*pMax_sfb);
if (nsect == 0)
{
status = 1; /* decode section data error */
}/* if (nsect) */
/* generate "linear" description from section info
* stored as codebook for each scalefactor band and group
* when nsect == 0, for-loop does not execute
*/
sectStart = 0;
for (i = 0; i < nsect; i++)
{
cb = sect[i].sect_cb;
sectWidth = sect[i].sect_end - sectStart;
sectStart += sectWidth;
while (sectWidth > 0)
{
*pCodebookMap++ = cb; /* cannot use memset for Int */
sectWidth--;
}
} /* for (i) */
}
else
{
/* set all sections with ZERO_HCB */
pv_memset(pCodebookMap,
ZERO_HCB,
MAXBANDS*sizeof(*pCodebookMap));
/*
for (i=MAXBANDS; i>0; i--)
{
*(pCodebookMap++) = ZERO_HCB;
}
*/
} /* if (*pMax_sfb) */
/* calculate band offsets
* (because of grouping and interleaving this cannot be
* a constant: store it in pFrameInfo->frame_sfb_top)
*/
if (pFrameInfo->islong == FALSE)
{
calc_gsfb_table(pFrameInfo, group);
}
/* decode scale factor data */
if (status == SUCCESS)
{
status = hufffac(pFrameInfo,
pInputStream,
group,
nsect,
sect,
global_gain,
pChVars->pShareWfxpCoef->factors,
pVars->scratch.a.huffbook_used);
} /* if (status) */
/* noiseless coding */
if (status == SUCCESS)
{
present = get1bits(pInputStream);
pPulseInfo->pulse_data_present = present;
if (present != FALSE)
{
if (pFrameInfo->islong == 1)
{
status = get_pulse_data(pPulseInfo,
pInputStream);
}
else
{
/* CommonExit(1,"Pulse data not allowed for short blocks"); */
status = 1;
} /* if (pFrameInfo) */
} /* if (present) */
} /* if (status) */
/* decode tns data */
if (status == SUCCESS)
{
present = get1bits(pInputStream);
pTnsFrameInfo->tns_data_present = present;
if (present != FALSE)
{
get_tns(pChVars->pShareWfxpCoef->max_sfb,
pInputStream,
pChVars->wnd,
pFrameInfo,
&pVars->mc_info,
pTnsFrameInfo,
pVars->scratch.a.tns_decode_coef);
}
else
{
for (i = pFrameInfo->num_win - 1; i >= 0 ; i--)
{
pTnsFrameInfo->n_filt[i] = 0;
}
} /* if(present) */
} /* if (status) */
/* gain control */
if (status == SUCCESS)
{
present =
get1bits(pInputStream);
if (present != FALSE)
{
/* CommonExit(1, "Gain control not implemented"); */
status = 1;
}
} /* if (status) */
if (status == SUCCESS)
{
/* Support Mono, Dual-Mono, or Stereo */
if ((id_syn_ele == ID_SCE) || (id_syn_ele == ID_CPE))
{
status = huffspec_fxp(pFrameInfo,
pInputStream,
nsect,
sect,
pChVars->pShareWfxpCoef->factors,
pChVars->fxpCoef,
pVars->share.a.quantSpec,
pVars->scratch.tmp_spec,
pWinMap[ONLY_LONG_WINDOW],
pPulseInfo,
pChVars->pShareWfxpCoef->qFormat);
}
}
/*----------------------------------------------------------------------------
; Return status
----------------------------------------------------------------------------*/
return status;
} /* getics */