/****************************************************************************** * * * Copyright (C) 2018 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ***************************************************************************** * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore */ #include #include #include "ixheaac_type_def.h" #include "ixheaacd_interface.h" #include "ixheaac_constants.h" #include "ixheaac_basic_ops32.h" #include "ixheaac_basic_ops40.h" #include "ixheaacd_function_selector.h" extern const WORD32 ixheaacd_twiddle_table_fft_32x32[514]; extern const FLOAT32 ixheaacd_twiddle_table_fft[514]; extern const FLOAT32 ixheaacd_twiddle_table_fft_flt[16]; extern const WORD32 ixheaacd_twiddle_table_3pr[1155]; extern const WORD32 ixheaacd_twiddle_table_3pi[1155]; extern const WORD8 ixheaacd_mps_dig_rev[8]; #define PLATFORM_INLINE __inline #define DIG_REV(i, m, j) \ do { \ unsigned _ = (i); \ _ = ((_ & 0x33333333) << 2) | ((_ & ~0x33333333) >> 2); \ _ = ((_ & 0x0F0F0F0F) << 4) | ((_ & ~0x0F0F0F0F) >> 4); \ _ = ((_ & 0x00FF00FF) << 8) | ((_ & ~0x00FF00FF) >> 8); \ (j) = _ >> (m); \ } while (0) static PLATFORM_INLINE WORD32 ixheaacd_mult32_sat(WORD32 a, WORD32 b) { WORD32 result; WORD64 temp_result; temp_result = (WORD64)a * (WORD64)b; result = ixheaac_sat64_32(temp_result >> 31); return (result); } static PLATFORM_INLINE WORD32 ixheaacd_mac32_sat(WORD32 a, WORD32 b, WORD32 c) { WORD32 result; result = ixheaac_add32_sat(a, ixheaacd_mult32_sat(b, c)); return (result); } static PLATFORM_INLINE FLOAT32 ixheaacd_mult32X32float(FLOAT32 a, FLOAT32 b) { FLOAT32 result; result = a * b; return result; } static PLATFORM_INLINE FLOAT32 ixheaacd_mac32X32float(FLOAT32 a, FLOAT32 b, FLOAT32 c) { FLOAT32 result; result = a + b * c; return result; } VOID ixheaacd_mps_synth_calc_fft(FLOAT32 *ptr_xr, FLOAT32 *ptr_xi, WORD32 npoints) { WORD32 i, j, k; FLOAT32 y[64], z[64]; FLOAT32 *ptr_y = y, *ptr_z = z; const FLOAT32 *ptr_w = ixheaacd_twiddle_table_fft_flt; for (i = 0; i < npoints; i += 4) { FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; FLOAT32 *inp = ptr_xr; FLOAT32 tmk; WORD32 h2 = ixheaacd_mps_dig_rev[i >> 2]; inp += (h2); x0r = *inp; x0i = *(inp + 1); inp += 16; x1r = *inp; x1i = *(inp + 1); inp += 16; x2r = *inp; x2i = *(inp + 1); inp += 16; x3r = *inp; x3i = *(inp + 1); x0r = x0r + x2r; x0i = x0i + x2i; tmk = x0r - x2r; x2r = tmk - x2r; tmk = x0i - x2i; x2i = tmk - x2i; x1r = x1r + x3r; x1i = x1i + x3i; tmk = x1r - x3r; x3r = tmk - x3r; tmk = x1i - x3i; x3i = tmk - x3i; x0r = x0r + x1r; x0i = x0i + x1i; tmk = x0r - x1r; x1r = tmk - x1r; tmk = x0i - x1i; x1i = tmk - x1i; x2r = x2r + x3i; x2i = x2i - x3r; tmk = x2r - x3i; x3i = tmk - x3i; tmk = x2i + x3r; x3r = tmk + x3r; *ptr_y++ = x0r; *ptr_y++ = x0i; *ptr_y++ = x2r; *ptr_y++ = x2i; *ptr_y++ = x1r; *ptr_y++ = x1i; *ptr_y++ = x3i; *ptr_y++ = x3r; inp = ptr_xi; inp += (h2); x0r = *inp; x0i = *(inp + 1); inp += 16; x1r = *inp; x1i = *(inp + 1); inp += 16; x2r = *inp; x2i = *(inp + 1); inp += 16; x3r = *inp; x3i = *(inp + 1); x0r = x0r + x2r; x0i = x0i + x2i; tmk = x0r - x2r; x2r = tmk - x2r; tmk = x0i - x2i; x2i = tmk - x2i; x1r = x1r + x3r; x1i = x1i + x3i; tmk = x1r - x3r; x3r = tmk - x3r; tmk = x1i - x3i; x3i = tmk - x3i; x0r = x0r + x1r; x0i = x0i + x1i; tmk = x0r - x1r; x1r = tmk - x1r; tmk = x0i - x1i; x1i = tmk - x1i; x2r = x2r + x3i; x2i = x2i - x3r; tmk = x2r - x3i; x3i = tmk - x3i; tmk = x2i + x3r; x3r = tmk + x3r; *ptr_z++ = x0r; *ptr_z++ = x0i; *ptr_z++ = x2r; *ptr_z++ = x2i; *ptr_z++ = x1r; *ptr_z++ = x1i; *ptr_z++ = x3i; *ptr_z++ = x3r; } ptr_y -= 64; ptr_z -= 64; { FLOAT32 *data_r = ptr_y; FLOAT32 *data_i = ptr_z; for (k = 2; k != 0; k--) { FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; x0r = (*data_r); x0i = (*(data_r + 1)); data_r += 8; x1r = (*data_r); x1i = (*(data_r + 1)); data_r += 8; x2r = (*data_r); x2i = (*(data_r + 1)); data_r += 8; x3r = (*data_r); x3i = (*(data_r + 1)); data_r -= 24; x0r = x0r + x2r; x0i = x0i + x2i; x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + x1r; x0i = x0i + x1i; x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + x3i; x2i = x2i - x3r; x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_r = x0r; *(data_r + 1) = x0i; data_r += 8; *data_r = x2r; *(data_r + 1) = x2i; data_r += 8; *data_r = x1r; *(data_r + 1) = x1i; data_r += 8; *data_r = x3i; *(data_r + 1) = x3r; data_r += 8; x0r = (*data_i); x0i = (*(data_i + 1)); data_i += 8; x1r = (*data_i); x1i = (*(data_i + 1)); data_i += 8; x2r = (*data_i); x2i = (*(data_i + 1)); data_i += 8; x3r = (*data_i); x3i = (*(data_i + 1)); data_i -= 24; x0r = x0r + x2r; x0i = x0i + x2i; x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + x1r; x0i = x0i + x1i; x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + x3i; x2i = x2i - x3r; x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_i = x0r; *(data_i + 1) = x0i; data_i += 8; *data_i = x2r; *(data_i + 1) = x2i; data_i += 8; *data_i = x1r; *(data_i + 1) = x1i; data_i += 8; *data_i = x3i; *(data_i + 1) = x3r; data_i += 8; } data_r = ptr_y + 2; data_i = ptr_z + 2; for (k = 2; k != 0; k--) { FLOAT32 tmp; FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data_r += 8; x1r = *data_r; x1i = *(data_r + 1); data_r += 8; x2r = *data_r; x2i = *(data_r + 1); data_r += 8; x3r = *data_r; x3i = *(data_r + 1); data_r -= 24; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, 0.923880f) - ixheaacd_mult32X32float((FLOAT32)x1i, -0.382683f)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, -0.382683f), (FLOAT32)x1i, 0.923880f); x1r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x2r, 0.707107f) - ixheaacd_mult32X32float((FLOAT32)x2i, -0.707107f)); x2i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x2r, -0.707107f), (FLOAT32)x2i, 0.707107f); x2r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x3r, 0.382683f) - ixheaacd_mult32X32float((FLOAT32)x3i, -0.923880f)); x3i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x3r, -0.923880f), (FLOAT32)x3i, 0.382683f); x3r = tmp; x0r = (*data_r); x0i = (*(data_r + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_r = x0r; *(data_r + 1) = x0i; data_r += 8; *data_r = x2r; *(data_r + 1) = x2i; data_r += 8; *data_r = x1r; *(data_r + 1) = x1i; data_r += 8; *data_r = x3i; *(data_r + 1) = x3r; data_r += 8; data_i += 8; x1r = *data_i; x1i = *(data_i + 1); data_i += 8; x2r = *data_i; x2i = *(data_i + 1); data_i += 8; x3r = *data_i; x3i = *(data_i + 1); data_i -= 24; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, 0.923880f) - ixheaacd_mult32X32float((FLOAT32)x1i, -0.382683f)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, -0.382683f), (FLOAT32)x1i, 0.923880f); x1r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x2r, 0.707107f) - ixheaacd_mult32X32float((FLOAT32)x2i, -0.707107f)); x2i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x2r, -0.707107f), (FLOAT32)x2i, 0.707107f); x2r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x3r, 0.382683f) - ixheaacd_mult32X32float((FLOAT32)x3i, -0.923880f)); x3i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x3r, -0.923880f), (FLOAT32)x3i, 0.382683f); x3r = tmp; x0r = (*data_i); x0i = (*(data_i + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_i = x0r; *(data_i + 1) = x0i; data_i += 8; *data_i = x2r; *(data_i + 1) = x2i; data_i += 8; *data_i = x1r; *(data_i + 1) = x1i; data_i += 8; *data_i = x3i; *(data_i + 1) = x3r; data_i += 8; } data_r -= 62; data_i -= 62; for (k = 2; k != 0; k--) { FLOAT32 tmp; FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data_r += 8; x1r = *data_r; x1i = *(data_r + 1); data_r += 8; x2r = *data_r; x2i = *(data_r + 1); data_r += 8; x3r = *data_r; x3i = *(data_r + 1); data_r -= 24; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, 0.707107f) - ixheaacd_mult32X32float((FLOAT32)x1i, -0.707107f)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, -0.707107f), (FLOAT32)x1i, 0.707107f); x1r = tmp; tmp = x2i; x2i = -x2r; x2r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x3r, -0.707107f) + ixheaacd_mult32X32float((FLOAT32)x3i, 0.707107f)); x3i = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x3r, 0.707107f) + ixheaacd_mult32X32float((FLOAT32)x3i, -0.707107f)); x3r = tmp; x0r = (*data_r); x0i = (*(data_r + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_r = x0r; *(data_r + 1) = x0i; data_r += 8; *data_r = x2r; *(data_r + 1) = x2i; data_r += 8; *data_r = x1r; *(data_r + 1) = x1i; data_r += 8; *data_r = x3i; *(data_r + 1) = x3r; data_r += 8; data_i += 8; x1r = *data_i; x1i = *(data_i + 1); data_i += 8; x2r = *data_i; x2i = *(data_i + 1); data_i += 8; x3r = *data_i; x3i = *(data_i + 1); data_i -= 24; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, 0.707107f) - ixheaacd_mult32X32float((FLOAT32)x1i, -0.707107f)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, -0.707107f), (FLOAT32)x1i, 0.707107f); x1r = tmp; tmp = x2i; x2i = -x2r; x2r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x3r, -0.707107f) + ixheaacd_mult32X32float((FLOAT32)x3i, 0.707107f)); x3i = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x3r, 0.707107f) + ixheaacd_mult32X32float((FLOAT32)x3i, -0.707107f)); x3r = tmp; x0r = (*data_i); x0i = (*(data_i + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_i = x0r; *(data_i + 1) = x0i; data_i += 8; *data_i = x2r; *(data_i + 1) = x2i; data_i += 8; *data_i = x1r; *(data_i + 1) = x1i; data_i += 8; *data_i = x3i; *(data_i + 1) = x3r; data_i += 8; } data_r -= 62; data_i -= 62; for (k = 2; k != 0; k--) { FLOAT32 tmp; FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data_r += 8; x1r = *data_r; x1i = *(data_r + 1); data_r += 8; x2r = *data_r; x2i = *(data_r + 1); data_r += 8; x3r = *data_r; x3i = *(data_r + 1); data_r -= 24; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, 0.382683f) - ixheaacd_mult32X32float((FLOAT32)x1i, -0.923880f)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, -0.923880f), (FLOAT32)x1i, 0.382683f); x1r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x2r, -0.707107f) + ixheaacd_mult32X32float((FLOAT32)x2i, 0.707107f)); x2i = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x2r, 0.707107f) + ixheaacd_mult32X32float((FLOAT32)x2i, -0.707107f)); x2r = tmp; tmp = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x3r, 0.923880f) + ixheaacd_mult32X32float((FLOAT32)x3i, -0.382683f)); x3i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x3r, -0.382683f), (FLOAT32)x3i, 0.923880f); x3r = tmp; x0r = (*data_r); x0i = (*(data_r + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i - x3i; x3r = x1r - (x3r * 2); x3i = x1i + (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_r = x0r; *(data_r + 1) = x0i; data_r += 8; *data_r = x2r; *(data_r + 1) = x2i; data_r += 8; *data_r = x1r; *(data_r + 1) = x1i; data_r += 8; *data_r = x3i; *(data_r + 1) = x3r; data_r += 8; data_i += 8; x1r = *data_i; x1i = *(data_i + 1); data_i += 8; x2r = *data_i; x2i = *(data_i + 1); data_i += 8; x3r = *data_i; x3i = *(data_i + 1); data_i -= 24; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, 0.382683f) - ixheaacd_mult32X32float((FLOAT32)x1i, -0.923880f)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, -0.923880f), (FLOAT32)x1i, 0.382683f); x1r = tmp; tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x2r, -0.707107f) + ixheaacd_mult32X32float((FLOAT32)x2i, 0.707107f)); x2i = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x2r, 0.707107f) + ixheaacd_mult32X32float((FLOAT32)x2i, -0.707107f)); x2r = tmp; tmp = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x3r, 0.923880f) + ixheaacd_mult32X32float((FLOAT32)x3i, -0.382683f)); x3i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x3r, -0.382683f), (FLOAT32)x3i, 0.923880f); x3r = tmp; x0r = (*data_i); x0i = (*(data_i + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i - x3i; x3r = x1r - (x3r * 2); x3i = x1i + (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data_i = x0r; *(data_i + 1) = x0i; data_i += 8; *data_i = x2r; *(data_i + 1) = x2i; data_i += 8; *data_i = x1r; *(data_i + 1) = x1i; data_i += 8; *data_i = x3i; *(data_i + 1) = x3r; data_i += 8; } data_r -= 62; data_i -= 62; } { const FLOAT32 *twiddles = ptr_w; FLOAT32 x0r, x0i, x1r, x1i; for (j = 8; j != 0; j--) { FLOAT32 W1 = *twiddles; twiddles++; FLOAT32 W4 = *twiddles; twiddles++; FLOAT32 tmp; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += 32; ptr_xr += 32; x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, W1) - ixheaacd_mult32X32float((FLOAT32)x1i, W4)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, W4), (FLOAT32)x1i, W1); x1r = tmp; *ptr_xr = (x0r) - (x1r); *(ptr_xr + 1) = (x0i) - (x1i); ptr_y -= 32; ptr_xr -= 32; *ptr_xr = (x0r) + (x1r); *(ptr_xr + 1) = (x0i) + (x1i); ptr_y += 2; ptr_xr += 2; x0r = *ptr_z; x0i = *(ptr_z + 1); ptr_z += 32; ptr_xi += 32; x1r = *ptr_z; x1i = *(ptr_z + 1); tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, W1) - ixheaacd_mult32X32float((FLOAT32)x1i, W4)); x1i = (FLOAT32)ixheaacd_mac32X32float(ixheaacd_mult32X32float((FLOAT32)x1r, W4), (FLOAT32)x1i, W1); x1r = tmp; *ptr_xi = (x0r) - (x1r); *(ptr_xi + 1) = (x0i) - (x1i); ptr_z -= 32; ptr_xi -= 32; *ptr_xi = (x0r) + (x1r); *(ptr_xi + 1) = (x0i) + (x1i); ptr_z += 2; ptr_xi += 2; } twiddles = ptr_w; for (j = 8; j != 0; j--) { FLOAT32 W1 = *twiddles; twiddles++; FLOAT32 W4 = *twiddles; twiddles++; FLOAT32 tmp; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += 32; ptr_xr += 32; x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, W4) + ixheaacd_mult32X32float((FLOAT32)x1i, W1)); x1i = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x1r, W1) + ixheaacd_mult32X32float((FLOAT32)x1i, W4)); x1r = tmp; *ptr_xr = (x0r) - (x1r); *(ptr_xr + 1) = (x0i) - (x1i); ptr_y -= 32; ptr_xr -= 32; *ptr_xr = (x0r) + (x1r); *(ptr_xr + 1) = (x0i) + (x1i); ptr_y += 2; ptr_xr += 2; x0r = *ptr_z; x0i = *(ptr_z + 1); ptr_z += 32; ptr_xi += 32; x1r = *ptr_z; x1i = *(ptr_z + 1); tmp = (FLOAT32)(ixheaacd_mult32X32float((FLOAT32)x1r, W4) + ixheaacd_mult32X32float((FLOAT32)x1i, W1)); x1i = (FLOAT32)(-ixheaacd_mult32X32float((FLOAT32)x1r, W1) + ixheaacd_mult32X32float((FLOAT32)x1i, W4)); x1r = tmp; *ptr_xi = (x0r) - (x1r); *(ptr_xi + 1) = (x0i) - (x1i); ptr_z -= 32; ptr_xi -= 32; *ptr_xi = (x0r) + (x1r); *(ptr_xi + 1) = (x0i) + (x1i); ptr_z += 2; ptr_xi += 2; } } } VOID ixheaacd_mps_complex_fft(FLOAT32 *xr, FLOAT32 *xi, WORD32 nlength) { WORD32 i, j, k, n_stages, h2; FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; WORD32 del, nodespacing, in_loop_cnt; WORD32 dig_rev_shift; WORD32 not_power_4; FLOAT32 ptr_x[256]; FLOAT32 y[256]; WORD32 npoints = nlength; FLOAT32 *ptr_y = y; const FLOAT32 *ptr_w; dig_rev_shift = ixheaac_norm32(npoints) + 1 - 16; n_stages = 30 - ixheaac_norm32(npoints); not_power_4 = n_stages & 1; n_stages = n_stages >> 1; for (i = 0; i> 1); x1r = *inp; x1i = *(inp + 1); inp += (npoints >> 1); x2r = *inp; x2i = *(inp + 1); inp += (npoints >> 1); x3r = *inp; x3i = *(inp + 1); x0r = x0r + x2r; x0i = x0i + x2i; x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + x1r; x0i = x0i + x1i; x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + x3i; x2i = x2i - x3r; x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *ptr_y++ = x0r; *ptr_y++ = x0i; *ptr_y++ = x2r; *ptr_y++ = x2i; *ptr_y++ = x1r; *ptr_y++ = x1i; *ptr_y++ = x3i; *ptr_y++ = x3r; } ptr_y -= 2 * npoints; del = 4; nodespacing = 64; in_loop_cnt = npoints >> 4; for (i = n_stages - 1; i>0; i--) { const FLOAT32 *twiddles = ptr_w; FLOAT32 *data = ptr_y; FLOAT32 w1h, w2h, w3h, w1l, w2l, w3l; WORD32 sec_loop_cnt; for (k = in_loop_cnt; k != 0; k--) { x0r = (*data); x0i = (*(data + 1)); data += (del << 1); x1r = (*data); x1i = (*(data + 1)); data += (del << 1); x2r = (*data); x2i = (*(data + 1)); data += (del << 1); x3r = (*data); x3i = (*(data + 1)); data -= 3 * (del << 1); x0r = x0r + x2r; x0i = x0i + x2i; x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + x1r; x0i = x0i + x1i; x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + x3i; x2i = x2i - x3r; x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data = ptr_y + 2; sec_loop_cnt = (nodespacing * del); sec_loop_cnt = (sec_loop_cnt / 4) + (sec_loop_cnt / 8) - (sec_loop_cnt / 16) \ + (sec_loop_cnt / 32) - (sec_loop_cnt / 64) + (sec_loop_cnt / 128) \ - (sec_loop_cnt / 256); j = nodespacing; for (j = nodespacing; j <= sec_loop_cnt; j += nodespacing) { w1h = *(twiddles + 2 * j); w1l = *(twiddles + 2 * j + 1); w2h = *(twiddles + 2 * (j << 1)); w2l = *(twiddles + 2 * (j << 1) + 1); w3h = *(twiddles + 2 * j + 2 * (j << 1)); w3l = *(twiddles + 2 * j + 2 * (j << 1) + 1); for (k = in_loop_cnt; k != 0; k--) { FLOAT32 tmp; FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = (ixheaacd_mult32X32float(x1r, w1l) - ixheaacd_mult32X32float(x1i, w1h)); x1i = ixheaacd_mac32X32float(ixheaacd_mult32X32float(x1r, w1h), x1i, w1l); x1r = tmp; tmp = (ixheaacd_mult32X32float(x2r, w2l) - ixheaacd_mult32X32float(x2i, w2h)); x2i = ixheaacd_mac32X32float(ixheaacd_mult32X32float(x2r, w2h), x2i, w2l); x2r = tmp; tmp = (ixheaacd_mult32X32float(x3r, w3l) - ixheaacd_mult32X32float(x3i, w3h)); x3i = ixheaacd_mac32X32float(ixheaacd_mult32X32float(x3r, w3h), x3i, w3l); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j <= (nodespacing * del) >> 1; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1)); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 512); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) + 1); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 511); for (k = in_loop_cnt; k != 0; k--) { FLOAT32 tmp; FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = (ixheaacd_mult32X32float(x1r, w1l) - ixheaacd_mult32X32float(x1i, w1h)); x1i = ixheaacd_mac32X32float(ixheaacd_mult32X32float(x1r, w1h), x1i, w1l); x1r = tmp; tmp = (ixheaacd_mult32X32float(x2r, w2l) - ixheaacd_mult32X32float(x2i, w2h)); x2i = ixheaacd_mac32X32float(ixheaacd_mult32X32float(x2r, w2h), x2i, w2l); x2r = tmp; tmp = (ixheaacd_mult32X32float(x3r, w3h) + ixheaacd_mult32X32float(x3i, w3l)); x3i = -ixheaacd_mult32X32float(x3r, w3l) + ixheaacd_mult32X32float(x3i, w3h); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j <= sec_loop_cnt * 2; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1) - 512); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 512); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) - 511); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 511); for (k = in_loop_cnt; k != 0; k--) { FLOAT32 tmp; FLOAT32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = (ixheaacd_mult32X32float(x1r, w1l) - ixheaacd_mult32X32float(x1i, w1h)); x1i = ixheaacd_mac32X32float(ixheaacd_mult32X32float(x1r, w1h), x1i, w1l); x1r = tmp; tmp = (ixheaacd_mult32X32float(x2r, w2h) + ixheaacd_mult32X32float(x2i, w2l)); x2i = -ixheaacd_mult32X32float(x2r, w2l) + ixheaacd_mult32X32float(x2i, w2h); x2r = tmp; tmp = (ixheaacd_mult32X32float(x3r, w3h) + ixheaacd_mult32X32float(x3i, w3l)); x3i = -ixheaacd_mult32X32float(x3r, w3l) + ixheaacd_mult32X32float(x3i, w3h); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = x0r + (x2r); x0i = x0i + (x2i); x2r = x0r - (x2r * 2); x2i = x0i - (x2i * 2); x1r = x1r + x3r; x1i = x1i + x3i; x3r = x1r - (x3r * 2); x3i = x1i - (x3i * 2); x0r = x0r + (x1r); x0i = x0i + (x1i); x1r = x0r - (x1r * 2); x1i = x0i - (x1i * 2); x2r = x2r + (x3i); x2i = x2i - (x3r); x3i = x2r - (x3i * 2); x3r = x2i + (x3r * 2); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j>= 2; del <<= 2; in_loop_cnt >>= 2; } if (not_power_4) { const FLOAT32 *twiddles = ptr_w; nodespacing <<= 1; for (j = del / 2; j != 0; j--) { FLOAT32 w1h = *twiddles; FLOAT32 w1l = *(twiddles + 1); FLOAT32 tmp; twiddles += nodespacing * 2; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += (del << 1); x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = (ixheaacd_mult32X32float(x1r, w1l) - ixheaacd_mult32X32float(x1i, w1h)); x1i = ixheaacd_mac32X32float(ixheaacd_mult32X32float(x1r, w1h), x1i, w1l); x1r = tmp; *ptr_y = (x0r) - (x1r); *(ptr_y + 1) = (x0i) - (x1i); ptr_y -= (del << 1); *ptr_y = (x0r) + (x1r); *(ptr_y + 1) = (x0i) + (x1i); ptr_y += 2; } twiddles = ptr_w; for (j = del / 2; j != 0; j--) { FLOAT32 w1h = *twiddles; FLOAT32 w1l = *(twiddles + 1); FLOAT32 tmp; twiddles += nodespacing * 2; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += (del << 1); x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = (ixheaacd_mult32X32float(x1r, w1h) + ixheaacd_mult32X32float(x1i, w1l)); x1i = -ixheaacd_mult32X32float(x1r, w1l) + ixheaacd_mult32X32float(x1i, w1h); x1r = tmp; *ptr_y = (x0r) - (x1r); *(ptr_y + 1) = (x0i) - (x1i); ptr_y -= (del << 1); *ptr_y = (x0r) + (x1r); *(ptr_y + 1) = (x0i) + (x1i); ptr_y += 2; } } for (i = 0; i> 1; npts = npoints; while (npts >> 1) { n++; npts = npts >> 1; } if (n % 2 == 0) shift = ((n + 4)) / 2; else shift = ((n + 3) / 2); for (i = 0; i < nlength; i++) { ptr_x[2 * i] = (xr[i] / (1 << (shift))); ptr_x[2 * i + 1] = (xi[i] / (1 << (shift))); } if (fft_mode == -1) { ptr_w = ixheaacd_twiddle_table_fft_32x32; for (i = 0; i < npoints; i += 4) { WORD32 *inp = ptr_x; DIG_REV(i, dig_rev_shift, h2); if (not_power_4) { h2 += 1; h2 &= ~1; } inp += (h2); x0r = *inp; x0i = *(inp + 1); inp += (npoints >> 1); x1r = *inp; x1i = *(inp + 1); inp += (npoints >> 1); x2r = *inp; x2i = *(inp + 1); inp += (npoints >> 1); x3r = *inp; x3i = *(inp + 1); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_add32_sat(x2r, x3i); x2i = ixheaac_sub32_sat(x2i, x3r); x3i = ixheaac_sub32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_add32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *ptr_y++ = x0r; *ptr_y++ = x0i; *ptr_y++ = x2r; *ptr_y++ = x2i; *ptr_y++ = x1r; *ptr_y++ = x1i; *ptr_y++ = x3i; *ptr_y++ = x3r; } ptr_y -= 2 * npoints; del = 4; nodespacing = 64; in_loop_cnt = npoints >> 4; for (i = n_stages - 1; i > 0; i--) { const WORD32 *twiddles = ptr_w; WORD32 *data = ptr_y; WORD32 w1h, w2h, w3h, w1l, w2l, w3l; WORD32 sec_loop_cnt; for (k = in_loop_cnt; k != 0; k--) { x0r = (*data); x0i = (*(data + 1)); data += (del << 1); x1r = (*data); x1i = (*(data + 1)); data += (del << 1); x2r = (*data); x2i = (*(data + 1)); data += (del << 1); x3r = (*data); x3i = (*(data + 1)); data -= 3 * (del << 1); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_add32_sat(x2r, x3i); x2i = ixheaac_sub32_sat(x2i, x3r); x3i = ixheaac_sub32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_add32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data = ptr_y + 2; sec_loop_cnt = (nodespacing * del); sec_loop_cnt = (sec_loop_cnt / 4) + (sec_loop_cnt / 8) - (sec_loop_cnt / 16) + (sec_loop_cnt / 32) - (sec_loop_cnt / 64) + (sec_loop_cnt / 128) - (sec_loop_cnt / 256); j = nodespacing; for (j = nodespacing; j <= sec_loop_cnt; j += nodespacing) { w1h = *(twiddles + 2 * j); w1l = *(twiddles + 2 * j + 1); w2h = *(twiddles + 2 * (j << 1)); w2l = *(twiddles + 2 * (j << 1) + 1); w3h = *(twiddles + 2 * j + 2 * (j << 1)); w3l = *(twiddles + 2 * j + 2 * (j << 1) + 1); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x2r, w2l), ixheaacd_mult32_sat(x2i, w2h)); x2i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x2r, w2h), x2i, w2l); x2r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x3r, w3l), ixheaacd_mult32_sat(x3i, w3h)); x3i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x3r, w3h), x3i, w3l); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_add32_sat(x2r, x3i); x2i = ixheaac_sub32_sat(x2i, x3r); x3i = ixheaac_sub32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_add32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j <= (nodespacing * del) >> 1; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1)); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 512); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) + 1); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 511); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x2r, w2l), ixheaacd_mult32_sat(x2i, w2h)); x2i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x2r, w2h), x2i, w2l); x2r = tmp; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x3r, w3h), ixheaacd_mult32_sat(x3i, w3l)); x3i = ixheaac_sub32_sat(ixheaacd_mult32_sat(x3i, w3h), ixheaacd_mult32_sat(x3r, w3l)); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_add32_sat(x2r, x3i); x2i = ixheaac_sub32_sat(x2i, x3r); x3i = ixheaac_sub32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_add32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j <= sec_loop_cnt * 2; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1) - 512); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 512); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) - 511); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 511); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x2r, w2h), ixheaacd_mult32_sat(x2i, w2l)); x2i = ixheaac_sub32_sat(ixheaacd_mult32_sat(x2i, w2h), ixheaacd_mult32_sat(x2r, w2l)); x2r = tmp; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x3r, w3h), ixheaacd_mult32_sat(x3i, w3l)); x3i = ixheaac_sub32_sat(ixheaacd_mult32_sat(x3i, w3h), ixheaacd_mult32_sat(x3r, w3l)); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_add32_sat(x2r, x3i); x2i = ixheaac_sub32_sat(x2i, x3r); x3i = ixheaac_sub32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_add32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j < nodespacing * del; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1) - 512); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 1024); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) - 511); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 1023); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x2r, w2h), ixheaacd_mult32_sat(x2i, w2l)); x2i = ixheaac_sub32_sat(ixheaacd_mult32_sat(x2i, w2h), ixheaacd_mult32_sat(x2r, w2l)); x2r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x3i, w3h), ixheaacd_mult32_sat(x3r, w3l)); x3i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x3r, w3h), x3i, w3l); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_sub32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_add32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_add32_sat(x2r, x3i); x2i = ixheaac_sub32_sat(x2i, x3r); x3i = ixheaac_sub32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_add32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } nodespacing >>= 2; del <<= 2; in_loop_cnt >>= 2; } if (not_power_4) { const WORD32 *twiddles = ptr_w; nodespacing <<= 1; shift += 1; for (j = del / 2; j != 0; j--) { WORD32 w1h = *twiddles; WORD32 w1l = *(twiddles + 1); WORD32 tmp; twiddles += nodespacing * 2; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += (del << 1); x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; *ptr_y = (x0r) / 2 - (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 - (x1i) / 2; ptr_y -= (del << 1); *ptr_y = (x0r) / 2 + (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 + (x1i) / 2; ptr_y += 2; } twiddles = ptr_w; for (j = del / 2; j != 0; j--) { WORD32 w1h = *twiddles; WORD32 w1l = *(twiddles + 1); WORD32 tmp; twiddles += nodespacing * 2; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += (del << 1); x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x1r, w1h), ixheaacd_mult32_sat(x1i, w1l)); x1i = ixheaac_sub32_sat(ixheaacd_mult32_sat(x1i, w1h), ixheaacd_mult32_sat(x1r, w1l)); x1r = tmp; *ptr_y = (x0r) / 2 - (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 - (x1i) / 2; ptr_y -= (del << 1); *ptr_y = (x0r) / 2 + (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 + (x1i) / 2; ptr_y += 2; } } } else { ptr_w = ixheaacd_twiddle_table_fft_32x32; for (i = 0; i < npoints; i += 4) { WORD32 *inp = ptr_x; DIG_REV(i, dig_rev_shift, h2); if (not_power_4) { h2 += 1; h2 &= ~1; } inp += (h2); x0r = *inp; x0i = *(inp + 1); inp += (npoints >> 1); x1r = *inp; x1i = *(inp + 1); inp += (npoints >> 1); x2r = *inp; x2i = *(inp + 1); inp += (npoints >> 1); x3r = *inp; x3i = *(inp + 1); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_sub32_sat(x2r, x3i); x2i = ixheaac_add32_sat(x2i, x3r); x3i = ixheaac_add32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_sub32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *ptr_y++ = x0r; *ptr_y++ = x0i; *ptr_y++ = x2r; *ptr_y++ = x2i; *ptr_y++ = x1r; *ptr_y++ = x1i; *ptr_y++ = x3i; *ptr_y++ = x3r; } ptr_y -= 2 * npoints; del = 4; nodespacing = 64; in_loop_cnt = npoints >> 4; for (i = n_stages - 1; i > 0; i--) { const WORD32 *twiddles = ptr_w; WORD32 *data = ptr_y; WORD32 w1h, w2h, w3h, w1l, w2l, w3l; WORD32 sec_loop_cnt; for (k = in_loop_cnt; k != 0; k--) { x0r = (*data); x0i = (*(data + 1)); data += (del << 1); x1r = (*data); x1i = (*(data + 1)); data += (del << 1); x2r = (*data); x2i = (*(data + 1)); data += (del << 1); x3r = (*data); x3i = (*(data + 1)); data -= 3 * (del << 1); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_sub32_sat(x2r, x3i); x2i = ixheaac_add32_sat(x2i, x3r); x3i = ixheaac_add32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_sub32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data = ptr_y + 2; sec_loop_cnt = (nodespacing * del); sec_loop_cnt = (sec_loop_cnt / 4) + (sec_loop_cnt / 8) - (sec_loop_cnt / 16) + (sec_loop_cnt / 32) - (sec_loop_cnt / 64) + (sec_loop_cnt / 128) - (sec_loop_cnt / 256); j = nodespacing; for (j = nodespacing; j <= sec_loop_cnt; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1)); w3h = *(twiddles + 2 * j + 2 * (j << 1)); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) + 1); w3l = *(twiddles + 2 * j + 2 * (j << 1) + 1); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x2r, w2l), ixheaacd_mult32_sat(x2i, w2h)); x2i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x2r, w2h), x2i, w2l); x2r = tmp; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x3r, w3l), ixheaacd_mult32_sat(x3i, w3h)); x3i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x3r, w3h), x3i, w3l); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_sub32_sat(x2r, x3i); x2i = ixheaac_add32_sat(x2i, x3r); x3i = ixheaac_add32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_sub32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j <= (nodespacing * del) >> 1; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1)); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 512); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) + 1); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 511); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x2r, w2l), ixheaacd_mult32_sat(x2i, w2h)); x2i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x2r, w2h), x2i, w2l); x2r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x3r, w3h), ixheaacd_mult32_sat(x3i, w3l)); x3i = ixheaac_add32_sat(ixheaacd_mult32_sat(x3r, w3l), ixheaacd_mult32_sat(x3i, w3h)); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_sub32_sat(x2r, x3i); x2i = ixheaac_add32_sat(x2i, x3r); x3i = ixheaac_add32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_sub32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j <= sec_loop_cnt * 2; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1) - 512); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 512); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) - 511); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 511); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x2r, w2h), ixheaacd_mult32_sat(x2i, w2l)); x2i = ixheaac_add32_sat(ixheaacd_mult32_sat(x2r, w2l), ixheaacd_mult32_sat(x2i, w2h)); x2r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x3r, w3h), ixheaacd_mult32_sat(x3i, w3l)); x3i = ixheaac_add32_sat(ixheaacd_mult32_sat(x3r, w3l), ixheaacd_mult32_sat(x3i, w3h)); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_add32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_sub32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_sub32_sat(x2r, x3i); x2i = ixheaac_add32_sat(x2i, x3r); x3i = ixheaac_add32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_sub32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } for (; j < nodespacing * del; j += nodespacing) { w1h = *(twiddles + 2 * j); w2h = *(twiddles + 2 * (j << 1) - 512); w3h = *(twiddles + 2 * j + 2 * (j << 1) - 1024); w1l = *(twiddles + 2 * j + 1); w2l = *(twiddles + 2 * (j << 1) - 511); w3l = *(twiddles + 2 * j + 2 * (j << 1) - 1023); for (k = in_loop_cnt; k != 0; k--) { WORD32 tmp; WORD32 x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; data += (del << 1); x1r = *data; x1i = *(data + 1); data += (del << 1); x2r = *data; x2i = *(data + 1); data += (del << 1); x3r = *data; x3i = *(data + 1); data -= 3 * (del << 1); tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x2r, w2h), ixheaacd_mult32_sat(x2i, w2l)); x2i = ixheaac_add32_sat(ixheaacd_mult32_sat(x2r, w2l), ixheaacd_mult32_sat(x2i, w2h)); x2r = tmp; tmp = -ixheaac_add32_sat(ixheaacd_mult32_sat(x3r, w3l), ixheaacd_mult32_sat(x3i, w3h)); x3i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x3r, w3h), x3i, w3l); x3r = tmp; x0r = (*data); x0i = (*(data + 1)); x0r = ixheaac_add32_sat(x0r, x2r); x0i = ixheaac_add32_sat(x0i, x2i); x2r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x2r, 1)); x2i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x2i, 1)); x1r = ixheaac_add32_sat(x1r, x3r); x1i = ixheaac_sub32_sat(x1i, x3i); x3r = ixheaac_sub32_sat(x1r, ixheaac_shl32_sat(x3r, 1)); x3i = ixheaac_add32_sat(x1i, ixheaac_shl32_sat(x3i, 1)); x0r = ixheaac_add32_sat(x0r, x1r); x0i = ixheaac_add32_sat(x0i, x1i); x1r = ixheaac_sub32_sat(x0r, ixheaac_shl32_sat(x1r, 1)); x1i = ixheaac_sub32_sat(x0i, ixheaac_shl32_sat(x1i, 1)); x2r = ixheaac_sub32_sat(x2r, x3i); x2i = ixheaac_add32_sat(x2i, x3r); x3i = ixheaac_add32_sat(x2r, ixheaac_shl32_sat(x3i, 1)); x3r = ixheaac_sub32_sat(x2i, ixheaac_shl32_sat(x3r, 1)); *data = x0r; *(data + 1) = x0i; data += (del << 1); *data = x2r; *(data + 1) = x2i; data += (del << 1); *data = x1r; *(data + 1) = x1i; data += (del << 1); *data = x3i; *(data + 1) = x3r; data += (del << 1); } data -= 2 * npoints; data += 2; } nodespacing >>= 2; del <<= 2; in_loop_cnt >>= 2; } if (not_power_4) { const WORD32 *twiddles = ptr_w; nodespacing <<= 1; shift += 1; for (j = del / 2; j != 0; j--) { WORD32 w1h = *twiddles; WORD32 w1l = *(twiddles + 1); WORD32 tmp; twiddles += nodespacing * 2; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += (del << 1); x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1i = ixheaacd_mac32_sat(-ixheaacd_mult32_sat(x1r, w1h), x1i, w1l); x1r = tmp; *ptr_y = (x0r) / 2 - (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 - (x1i) / 2; ptr_y -= (del << 1); *ptr_y = (x0r) / 2 + (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 + (x1i) / 2; ptr_y += 2; } twiddles = ptr_w; for (j = del / 2; j != 0; j--) { WORD32 w1h = *twiddles; WORD32 w1l = *(twiddles + 1); WORD32 tmp; twiddles += nodespacing * 2; x0r = *ptr_y; x0i = *(ptr_y + 1); ptr_y += (del << 1); x1r = *ptr_y; x1i = *(ptr_y + 1); tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(x1r, w1h), ixheaacd_mult32_sat(x1i, w1l)); x1i = ixheaac_add32_sat(ixheaacd_mult32_sat(x1r, w1l), ixheaacd_mult32_sat(x1i, w1h)); x1r = tmp; *ptr_y = (x0r) / 2 - (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 - (x1i) / 2; ptr_y -= (del << 1); *ptr_y = (x0r) / 2 + (x1r) / 2; *(ptr_y + 1) = (x0i) / 2 + (x1i) / 2; ptr_y += 2; } } } for (i = 0; i < nlength; i++) { xr[i] = y[2 * i]; xi[i] = y[2 * i + 1]; } *preshift = shift - *preshift; return; } static PLATFORM_INLINE void ixheaacd_complex_3point_fft(WORD32 *inp, WORD32 *op, WORD32 sign_dir) { WORD32 add_r, sub_r; WORD32 add_i, sub_i; WORD32 temp_real, temp_imag, temp; WORD32 p1, p2, p3, p4; WORD32 sinmu; sinmu = -1859775393 * sign_dir; temp_real = ixheaac_add32_sat(inp[0], inp[2]); temp_imag = ixheaac_add32_sat(inp[1], inp[3]); add_r = ixheaac_add32_sat(inp[2], inp[4]); add_i = ixheaac_add32_sat(inp[3], inp[5]); sub_r = ixheaac_sub32_sat(inp[2], inp[4]); sub_i = ixheaac_sub32_sat(inp[3], inp[5]); p1 = add_r >> 1; p4 = add_i >> 1; p2 = ixheaac_mult32_shl(sub_i, sinmu); p3 = ixheaac_mult32_shl(sub_r, sinmu); temp = ixheaac_sub32(inp[0], p1); op[0] = ixheaac_add32_sat(temp_real, inp[4]); op[1] = ixheaac_add32_sat(temp_imag, inp[5]); op[2] = ixheaac_add32_sat(temp, p2); op[3] = ixheaac_sub32_sat(ixheaac_sub32_sat(inp[1], p3), p4); op[4] = ixheaac_sub32_sat(temp, p2); op[5] = ixheaac_sub32_sat(ixheaac_add32_sat(inp[1], p3), p4); return; } VOID ixheaacd_complex_fft_p3(WORD32 *xr, WORD32 *xi, WORD32 nlength, WORD32 fft_mode, WORD32 *preshift) { WORD32 i, j; WORD32 shift = 0; WORD32 xr_3[384]; WORD32 xi_3[384]; WORD32 x[1024]; WORD32 y[1024]; WORD32 cnfac, npts; WORD32 mpass = nlength; WORD32 n = 0; WORD32 *ptr_x = x; WORD32 *ptr_y = y; cnfac = 0; while (mpass % 3 == 0) { mpass /= 3; cnfac++; } npts = mpass; for (i = 0; i < 3 * cnfac; i++) { for (j = 0; j < mpass; j++) { xr_3[j] = xr[3 * j + i]; xi_3[j] = xi[3 * j + i]; } (*ixheaacd_complex_fft_p2)(xr_3, xi_3, mpass, fft_mode, &shift); for (j = 0; j < mpass; j++) { xr[3 * j + i] = xr_3[j]; xi[3 * j + i] = xi_3[j]; } } while (npts >> 1) { n++; npts = npts >> 1; } if (n % 2 == 0) shift = ((n + 4)) / 2; else shift = ((n + 5) / 2); *preshift = shift - *preshift + 1; for (i = 0; i < nlength; i++) { ptr_x[2 * i] = (xr[i] >> 1); ptr_x[2 * i + 1] = (xi[i] >> 1); } { const WORD32 *w1r, *w1i; WORD32 tmp; w1r = ixheaacd_twiddle_table_3pr; w1i = ixheaacd_twiddle_table_3pi; if (fft_mode < 0) { for (i = 0; i < nlength; i += 3) { w1r++; w1i++; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 2], (*w1r)), ixheaacd_mult32_sat(ptr_x[2 * i + 3], (*w1i))); ptr_x[2 * i + 3] = ixheaac_add32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 2], (*w1i)), ixheaacd_mult32_sat(ptr_x[2 * i + 3], (*w1r))); ptr_x[2 * i + 2] = tmp; w1r++; w1i++; tmp = ixheaac_sub32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 4], (*w1r)), ixheaacd_mult32_sat(ptr_x[2 * i + 5], (*w1i))); ptr_x[2 * i + 5] = ixheaac_add32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 4], (*w1i)), ixheaacd_mult32_sat(ptr_x[2 * i + 5], (*w1r))); ptr_x[2 * i + 4] = tmp; w1r += 3 * (128 / mpass - 1) + 1; w1i += 3 * (128 / mpass - 1) + 1; } } else { for (i = 0; i < nlength; i += 3) { w1r++; w1i++; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 2], (*w1r)), ixheaacd_mult32_sat(ptr_x[2 * i + 3], (*w1i))); ptr_x[2 * i + 3] = ixheaac_sub32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 3], (*w1r)), ixheaacd_mult32_sat(ptr_x[2 * i + 2], (*w1i))); ptr_x[2 * i + 2] = tmp; w1r++; w1i++; tmp = ixheaac_add32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 4], (*w1r)), ixheaacd_mult32_sat(ptr_x[2 * i + 5], (*w1i))); ptr_x[2 * i + 5] = ixheaac_sub32_sat(ixheaacd_mult32_sat(ptr_x[2 * i + 5], (*w1r)), ixheaacd_mult32_sat(ptr_x[2 * i + 4], (*w1i))); ptr_x[2 * i + 4] = tmp; w1r += 3 * (128 / mpass - 1) + 1; w1i += 3 * (128 / mpass - 1) + 1; } } } for (i = 0; i < mpass; i++) { ixheaacd_complex_3point_fft(ptr_x, ptr_y, fft_mode); ptr_x = ptr_x + 6; ptr_y = ptr_y + 6; } ptr_y = y; for (i = 0; i < mpass; i++) { xr[i] = *ptr_y++; xi[i] = *ptr_y++; xr[mpass + i] = *ptr_y++; xi[mpass + i] = *ptr_y++; xr[2 * mpass + i] = *ptr_y++; xi[2 * mpass + i] = *ptr_y++; } return; } VOID ixheaacd_complex_fft(WORD32 *data_r, WORD32 *data_i, WORD32 nlength, WORD32 fft_mode, WORD32 *preshift) { if (nlength & (nlength - 1)) { ixheaacd_complex_fft_p3(data_r, data_i, nlength, fft_mode, preshift); } else (*ixheaacd_complex_fft_p2)(data_r, data_i, nlength, fft_mode, preshift); return; }