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  /frameworks/av/media/libstagefright/codecs/aacenc/src/asm/ARMV5E/
CalcWindowEnergy_v5.s 56 ldrsh r9, [r1, r9] @ tempUnfiltered = timeSignal[tidx];
60 smulwb r3, r14, r9 @ accu1 = L_mpy_ls(Coeff1, tempUnfiltered);
  /frameworks/av/media/libstagefright/codecs/aacenc/src/
block_switch.c 285 Word32 tempUnfiltered;
304 tempUnfiltered = timeSignal[tidx];
307 accu1 = L_mpy_ls(Coeff1, tempUnfiltered);
316 accuUE += (tempUnfiltered * tempUnfiltered) >> ENERGY_SHIFT;
  /external/aac/libAACenc/src/
block_switch.cpp 349 FIXP_DBL tempUnfiltered, tempFiltred, t1, t2;
350 /* tempUnfiltered is scaled with 1 to prevent overflows during calculation of tempFiltred */
352 tempUnfiltered = (FIXP_DBL) *pTimeSignal++ >> 1;
354 tempUnfiltered = (FIXP_DBL) *pTimeSignal++ << (DFRACT_BITS-SAMPLE_BITS-1);
356 t1 = fMultDiv2(hiPassCoeff1, tempUnfiltered-temp_iirState0);
360 temp_iirState0 = tempUnfiltered;
364 * because tempUnfiltered was already scaled with 1 (is 2 after squaring)
367 temp_windowNrg += fPow2Div2(tempUnfiltered) >> (BLOCK_SWITCH_ENERGY_SHIFT - 1 - 2);

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