104         BLOCK_SWITCHING_CONTROL *RESTRICT blockSwitchingControl,
151 void FDKaacEnc_InitBlockSwitching(BLOCK_SWITCHING_CONTROL *blockSwitchingControl, INT isLowDelay)  in FDKaacEnc_InitBlockSwitching()  argument
153   FDKmemclear (blockSwitchingControl, sizeof(BLOCK_SWITCHING_CONTROL));  in FDKaacEnc_InitBlockSwitching()
157     blockSwitchingControl->nBlockSwitchWindows = 4;  in FDKaacEnc_InitBlockSwitching()
158     blockSwitchingControl->allowShortFrames    = 0;  in FDKaacEnc_InitBlockSwitching()
159     blockSwitchingControl->allowLookAhead      = 0;  in FDKaacEnc_InitBlockSwitching()
163     blockSwitchingControl->nBlockSwitchWindows = 8;  in FDKaacEnc_InitBlockSwitching()
164     blockSwitchingControl->allowShortFrames    = 1;  in FDKaacEnc_InitBlockSwitching()
165     blockSwitchingControl->allowLookAhead      = 1;  in FDKaacEnc_InitBlockSwitching()
168   blockSwitchingControl->noOfGroups            = MAX_NO_OF_GROUPS;  in FDKaacEnc_InitBlockSwitching()
171   blockSwitchingControl->lastWindowSequence    = LONG_WINDOW;  in FDKaacEnc_InitBlockSwitching()
172 …blockSwitchingControl->windowShape           = blockType2windowShape[blockSwitchingControl->allowS…  in FDKaacEnc_InitBlockSwitching()
208 int FDKaacEnc_BlockSwitching(BLOCK_SWITCHING_CONTROL *blockSwitchingControl, const INT granuleLengt…  in FDKaacEnc_BlockSwitching()  argument
213     UINT nBlockSwitchWindows = blockSwitchingControl->nBlockSwitchWindows;  in FDKaacEnc_BlockSwitching()
220       blockSwitchingControl->lastWindowSequence = LONG_WINDOW;  in FDKaacEnc_BlockSwitching()
221       blockSwitchingControl->windowShape    = SINE_WINDOW;  in FDKaacEnc_BlockSwitching()
222       blockSwitchingControl->noOfGroups     = 1;  in FDKaacEnc_BlockSwitching()
223       blockSwitchingControl->groupLen[0]    = 1;  in FDKaacEnc_BlockSwitching()
229     blockSwitchingControl->lastattack = blockSwitchingControl->attack;  in FDKaacEnc_BlockSwitching()
230     blockSwitchingControl->lastAttackIndex = blockSwitchingControl->attackIndex;  in FDKaacEnc_BlockSwitching()
233 …FDKmemcpy(blockSwitchingControl->windowNrg[0], blockSwitchingControl->windowNrg[1], sizeof(blockSw…  in FDKaacEnc_BlockSwitching()
234 …FDKmemcpy(blockSwitchingControl->windowNrgF[0], blockSwitchingControl->windowNrgF[1], sizeof(block…  in FDKaacEnc_BlockSwitching()
236     if (blockSwitchingControl->allowShortFrames)  in FDKaacEnc_BlockSwitching()
241       FDKmemclear (blockSwitchingControl->groupLen, sizeof(blockSwitchingControl->groupLen));  in FDKaacEnc_BlockSwitching()
244       blockSwitchingControl->noOfGroups = MAX_NO_OF_GROUPS;  in FDKaacEnc_BlockSwitching()
246 …FDKmemcpy(blockSwitchingControl->groupLen, suggestedGroupingTable[blockSwitchingControl->lastAttac…  in FDKaacEnc_BlockSwitching()
248       if (blockSwitchingControl->attack == TRUE)  in FDKaacEnc_BlockSwitching()
249 …blockSwitchingControl->maxWindowNrg = FDKaacEnc_GetWindowEnergy(blockSwitchingControl->windowNrg[0…  in FDKaacEnc_BlockSwitching()
251           blockSwitchingControl->maxWindowNrg = FL2FXCONST_DBL(0.0);  in FDKaacEnc_BlockSwitching()
257 …FDKaacEnc_CalcWindowEnergy(blockSwitchingControl, granuleLength>>(nBlockSwitchWindows==4? 2:3 ), p…  in FDKaacEnc_BlockSwitching()
262     blockSwitchingControl->attack = FALSE;  in FDKaacEnc_BlockSwitching()
266     enM1 = blockSwitchingControl->windowNrgF[0][nBlockSwitchWindows-1];  in FDKaacEnc_BlockSwitching()
269         FIXP_DBL tmp = fMultDiv2(oneMinusAccWindowNrgFac, blockSwitchingControl->accWindowNrg);  in FDKaacEnc_BlockSwitching()
270         blockSwitchingControl->accWindowNrg = fMultAdd(tmp, accWindowNrgFac, enM1) ;  in FDKaacEnc_BlockSwitching()
272 …if (fMult(blockSwitchingControl->windowNrgF[1][i],invAttackRatio) > blockSwitchingControl->accWind…  in FDKaacEnc_BlockSwitching()
273             blockSwitchingControl->attack = TRUE;  in FDKaacEnc_BlockSwitching()
274             blockSwitchingControl->attackIndex = i;  in FDKaacEnc_BlockSwitching()
276         enM1 = blockSwitchingControl->windowNrgF[1][i];  in FDKaacEnc_BlockSwitching()
281     if (enMax < minAttackNrg) blockSwitchingControl->attack = FALSE;  in FDKaacEnc_BlockSwitching()
284     if((blockSwitchingControl->attack == FALSE) && (blockSwitchingControl->lastattack == TRUE)) {  in FDKaacEnc_BlockSwitching()
286 …if ( ((blockSwitchingControl->windowNrgF[0][nBlockSwitchWindows-1]>>4) > fMult((FIXP_DBL)(10<<(DFR…  in FDKaacEnc_BlockSwitching()
287            && (blockSwitchingControl->lastAttackIndex == (INT)nBlockSwitchWindows-1)  in FDKaacEnc_BlockSwitching()
290             blockSwitchingControl->attack = TRUE;  in FDKaacEnc_BlockSwitching()
291             blockSwitchingControl->attackIndex = 0;  in FDKaacEnc_BlockSwitching()
296     if(blockSwitchingControl->allowLookAhead)  in FDKaacEnc_BlockSwitching()
300       blockSwitchingControl->lastWindowSequence =  in FDKaacEnc_BlockSwitching()
301 …chgWndSqLkAhd[blockSwitchingControl->lastattack][blockSwitchingControl->attack][blockSwitchingCont…  in FDKaacEnc_BlockSwitching()
306       blockSwitchingControl->lastWindowSequence =  in FDKaacEnc_BlockSwitching()
307         chgWndSq[blockSwitchingControl->attack][blockSwitchingControl->lastWindowSequence];  in FDKaacEnc_BlockSwitching()
312 …blockSwitchingControl->windowShape = blockType2windowShape[blockSwitchingControl->allowShortFrames…  in FDKaacEnc_BlockSwitching()
329 static void FDKaacEnc_CalcWindowEnergy(BLOCK_SWITCHING_CONTROL *RESTRICT blockSwitchingControl, INT…  in FDKaacEnc_CalcWindowEnergy()  argument
338     for (w=0; w < blockSwitchingControl->nBlockSwitchWindows; w++) {  in FDKaacEnc_CalcWindowEnergy()
342         FIXP_DBL temp_iirState0  = blockSwitchingControl->iirStates[0];  in FDKaacEnc_CalcWindowEnergy()
343         FIXP_DBL temp_iirState1  = blockSwitchingControl->iirStates[1];  in FDKaacEnc_CalcWindowEnergy()
370         blockSwitchingControl->windowNrg[1][w]  = temp_windowNrg;  in FDKaacEnc_CalcWindowEnergy()
371         blockSwitchingControl->windowNrgF[1][w] = temp_windowNrgF;  in FDKaacEnc_CalcWindowEnergy()
372         blockSwitchingControl->iirStates[0]     = temp_iirState0;  in FDKaacEnc_CalcWindowEnergy()
373         blockSwitchingControl->iirStates[1]     = temp_iirState1;  in FDKaacEnc_CalcWindowEnergy()