109 void mdct_init(H_MDCT hMdct, FIXP_DBL *overlap, INT overlapBufferSize) {  in mdct_init()  argument
110   hMdct->overlap.freq = overlap;  in mdct_init()
112   hMdct->prev_fr = 0;  in mdct_init()
113   hMdct->prev_nr = 0;  in mdct_init()
114   hMdct->prev_tl = 0;  in mdct_init()
115   hMdct->ov_size = overlapBufferSize;  in mdct_init()
116   hMdct->prevAliasSymmetry = 0;  in mdct_init()
117   hMdct->prevPrevAliasSymmetry = 0;  in mdct_init()
118   hMdct->pFacZir = NULL;  in mdct_init()
119   hMdct->pAsymOvlp = NULL;  in mdct_init()
135 INT mdct_block(H_MDCT hMdct, const INT_PCM *RESTRICT timeData,  in mdct_block()  argument
152   if (hMdct->prev_fr ==  in mdct_block()
154     hMdct->prev_fr = fr;  in mdct_block()
155     hMdct->prev_wrs = wrs;  in mdct_block()
156     hMdct->prev_tl = tl;  in mdct_block()
175     wls = hMdct->prev_wrs;  in mdct_block()
176     fl = hMdct->prev_fr;  in mdct_block()
264     hMdct->prev_wrs = wrs;  in mdct_block()
265     hMdct->prev_fr = fr;  in mdct_block()
266     hMdct->prev_tl = tl;  in mdct_block()
327 INT imdct_drain(H_MDCT hMdct, FIXP_DBL *output, INT nrSamplesRoom) {  in imdct_drain()  argument
331     buffered_samples = hMdct->ov_offset;  in imdct_drain()
336       FDKmemcpy(output, hMdct->overlap.time,  in imdct_drain()
338       hMdct->ov_offset = 0;  in imdct_drain()
344 INT imdct_copy_ov_and_nr(H_MDCT hMdct, FIXP_DBL *pTimeData, INT nrSamples) {  in imdct_copy_ov_and_nr()  argument
348   nt = fMin(hMdct->ov_offset, nrSamples);  in imdct_copy_ov_and_nr()
350   nf = fMin(hMdct->prev_nr, nrSamples);  in imdct_copy_ov_and_nr()
351   FDKmemcpy(pTimeData, hMdct->overlap.time, nt * sizeof(FIXP_DBL));  in imdct_copy_ov_and_nr()
354   pOvl = hMdct->overlap.freq + hMdct->ov_size - 1;  in imdct_copy_ov_and_nr()
355   if (hMdct->prevPrevAliasSymmetry == 0) {  in imdct_copy_ov_and_nr()
372 void imdct_adapt_parameters(H_MDCT hMdct, int *pfl, int *pnl, int tl,  in imdct_adapt_parameters()  argument
376   if (hMdct->prev_tl == 0) {  in imdct_adapt_parameters()
377     hMdct->prev_wrs = wls;  in imdct_adapt_parameters()
378     hMdct->prev_fr = fl;  in imdct_adapt_parameters()
379     hMdct->prev_nr = (noOutSamples - fl) >> 1;  in imdct_adapt_parameters()
380     hMdct->prev_tl = noOutSamples;  in imdct_adapt_parameters()
381     hMdct->ov_offset = 0;  in imdct_adapt_parameters()
385   window_diff = (hMdct->prev_fr - fl) >> 1;  in imdct_adapt_parameters()
389   if (hMdct->prev_nr + window_diff > 0) {  in imdct_adapt_parameters()
400     if (fl < hMdct->prev_fr) {  in imdct_adapt_parameters()
409     hMdct->prev_nr += window_diff;  in imdct_adapt_parameters()
410     hMdct->prev_fr = fl;  in imdct_adapt_parameters()
411     hMdct->prev_wrs = wls;  in imdct_adapt_parameters()
414     fl = hMdct->prev_fr;  in imdct_adapt_parameters()
465 INT imlt_block(H_MDCT hMdct, FIXP_DBL *output, FIXP_DBL *spectrum,  in imlt_block()  argument
484   if (hMdct->prev_fr != fl) {  in imlt_block()
485     imdct_adapt_parameters(hMdct, &fl, &nl, tl, wls, noOutSamples);  in imlt_block()
488   pOvl = hMdct->overlap.freq + hMdct->ov_size - 1;  in imlt_block()
492     for (i = 0; i < hMdct->ov_offset; i++) {  in imlt_block()
493       *pOut0 = hMdct->overlap.time[i];  in imlt_block()
496     nrSamples = hMdct->ov_offset;  in imlt_block()
497     hMdct->ov_offset = 0;  in imlt_block()
505     if (hMdct->prev_fr != fl) {  in imlt_block()
506       imdct_adapt_parameters(hMdct, &fl, &nl, tl, wls, noOutSamples);  in imlt_block()
512     pWindow = hMdct->prev_wrs;  in imlt_block()
519       if (hMdct->prevAliasSymmetry == 0) {  in imlt_block()
529       if (hMdct->prevAliasSymmetry == 0) {  in imlt_block()
559       pOut0 = hMdct->overlap.time + hMdct->ov_offset;  in imlt_block()
560       hMdct->ov_offset += hMdct->prev_nr + fl / 2;  in imlt_block()
563       nrSamples += hMdct->prev_nr + fl / 2;  in imlt_block()
567     if ((hMdct->pFacZir != 0) && (hMdct->prev_nr == fl / 2)) {  in imlt_block()
570       for (i = 0; i < hMdct->prev_nr; i++) {  in imlt_block()
572         *pOut0 = IMDCT_SCALE_DBL(x + hMdct->pFacZir[i]);  in imlt_block()
575       hMdct->pFacZir = NULL;  in imlt_block()
582       if (hMdct->prevPrevAliasSymmetry == 0) {  in imlt_block()
583         for (i = 0; i < hMdct->prev_nr; i++) {  in imlt_block()
589         for (i = 0; i < hMdct->prev_nr; i++) {  in imlt_block()
600       pOut1 = hMdct->overlap.time + hMdct->ov_offset + fl / 2 - 1;  in imlt_block()
601       hMdct->ov_offset += fl / 2 + nl;  in imlt_block()
617     if (hMdct->prevPrevAliasSymmetry == 0) {  in imlt_block()
618       if (hMdct->prevAliasSymmetry == 0) {  in imlt_block()
619         if (!hMdct->pAsymOvlp) {  in imlt_block()
629           FIXP_DBL *pAsymOvl = hMdct->pAsymOvlp + fl / 2 - 1;  in imlt_block()
642           hMdct->pAsymOvlp = NULL;  in imlt_block()
655       if (hMdct->prevAliasSymmetry == 0) {  in imlt_block()
676     if (hMdct->pFacZir != 0) {  in imlt_block()
681         pOut[i] += IMDCT_SCALE_DBL(hMdct->pFacZir[i]);  in imlt_block()
683       hMdct->pFacZir = NULL;  in imlt_block()
695     if (hMdct->prevAliasSymmetry == 0) {  in imlt_block()
711     hMdct->prev_nr = nr;  in imlt_block()
712     hMdct->prev_fr = fr;  in imlt_block()
713     hMdct->prev_tl = tl;  in imlt_block()
714     hMdct->prev_wrs = wrs;  in imlt_block()
717     hMdct->prevPrevAliasSymmetry = hMdct->prevAliasSymmetry;  in imlt_block()
718     hMdct->prevAliasSymmetry = currAliasSymmetry;  in imlt_block()
723   pOvl = hMdct->overlap.freq + hMdct->ov_size - tl / 2;  in imlt_block()