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ca203e9985
This patch does 4 things, all of which interact and thus it woudln't be possible to commit them separately without causing either quality regressions or assertion failures. Fate comparison targets don't all reflect improvements in quality, yet listening tests show substantially improved quality and stability. 1. Increase SF range utilization. The spec requires SF delta values to be constrained within the range -60..60. The previous code was applying that range to the whole SF array and not only the deltas of consecutive values, because doing so requires smarter code: zeroing or otherwise skipping a band may invalidate lots of SF choices. This patch implements that logic to allow the coders to utilize the full dynamic range of scalefactors, increasing quality quite considerably, and fixing delta-SF-related assertion failures, since now the limitation is enforced rather than asserted. 2. PNS tweaks The previous modification makes big improvements in twoloop's efficiency, and every time that happens PNS logic needs to be tweaked accordingly to avoid it from stepping all over twoloop's decisions. This patch includes modifications of the sort. 3. Account for lowpass cutoff during PSY analysis The closer PSY's allocation is to final allocation the better the quality is, and given these modifications, twoloop is now very efficient at avoiding holes. Thus, to compute accurate thresholds, PSY needs to account for the lowpass applied implicitly during twoloop (by zeroing high bands). This patch makes twoloop set the cutoff in psymodel's context the first time it runs, and makes PSY account for it during threshold computation, making PE and threshold computations closer to the final allocation and thus achieving better subjective quality. 4. Tweaks to RC lambda tracking loop in relation to PNS Without this tweak some corner cases cause quality regressions. Basically, lambda needs to react faster to overall bitrate efficiency changes since now PNS can be quite successful in enforcing maximum bitrates, when PSY allocates too many bits to the lower bands, suppressing the signals RC logic uses to lower lambda in those cases and causing aggressive PNS. This tweak makes PNS much less aggressive, though it can still use some further tweaks. Also update MIPS specializations and adjust fuzz Also in lavc/mips/aacpsy_mips.h: remove trailing whitespace
237 lines
12 KiB
C
237 lines
12 KiB
C
/*
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* Copyright (c) 2012
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* MIPS Technologies, Inc., California.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Bojan Zivkovic (bojan@mips.com)
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*
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* AAC encoder psychoacoustic model routines optimized
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* for MIPS floating-point architecture
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Reference: libavcodec/aacpsy.c
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*/
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#ifndef AVCODEC_MIPS_AACPSY_MIPS_H
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#define AVCODEC_MIPS_AACPSY_MIPS_H
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#include "libavutil/mips/asmdefs.h"
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#if HAVE_INLINE_ASM && HAVE_MIPSFPU && ( PSY_LAME_FIR_LEN == 21 )
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static void calc_thr_3gpp_mips(const FFPsyWindowInfo *wi, const int num_bands,
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AacPsyChannel *pch, const uint8_t *band_sizes,
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const float *coefs, const int cutoff)
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{
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int i, w, g;
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int start = 0, wstart = 0;
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for (w = 0; w < wi->num_windows*16; w += 16) {
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wstart = 0;
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for (g = 0; g < num_bands; g++) {
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AacPsyBand *band = &pch->band[w+g];
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float form_factor = 0.0f;
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float Temp;
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band->energy = 0.0f;
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if (wstart < cutoff) {
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for (i = 0; i < band_sizes[g]; i+=4) {
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float a, b, c, d;
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float ax, bx, cx, dx;
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float *cf = (float *)&coefs[start+i];
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__asm__ volatile (
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"lwc1 %[a], 0(%[cf]) \n\t"
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"lwc1 %[b], 4(%[cf]) \n\t"
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"lwc1 %[c], 8(%[cf]) \n\t"
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"lwc1 %[d], 12(%[cf]) \n\t"
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"abs.s %[a], %[a] \n\t"
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"abs.s %[b], %[b] \n\t"
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"abs.s %[c], %[c] \n\t"
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"abs.s %[d], %[d] \n\t"
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"sqrt.s %[ax], %[a] \n\t"
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"sqrt.s %[bx], %[b] \n\t"
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"sqrt.s %[cx], %[c] \n\t"
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"sqrt.s %[dx], %[d] \n\t"
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"madd.s %[e], %[e], %[a], %[a] \n\t"
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"madd.s %[e], %[e], %[b], %[b] \n\t"
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"madd.s %[e], %[e], %[c], %[c] \n\t"
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"madd.s %[e], %[e], %[d], %[d] \n\t"
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"add.s %[f], %[f], %[ax] \n\t"
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"add.s %[f], %[f], %[bx] \n\t"
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"add.s %[f], %[f], %[cx] \n\t"
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"add.s %[f], %[f], %[dx] \n\t"
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: [a]"=&f"(a), [b]"=&f"(b),
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[c]"=&f"(c), [d]"=&f"(d),
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[e]"+f"(band->energy), [f]"+f"(form_factor),
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[ax]"=&f"(ax), [bx]"=&f"(bx),
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[cx]"=&f"(cx), [dx]"=&f"(dx)
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: [cf]"r"(cf)
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: "memory"
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);
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}
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}
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Temp = sqrtf((float)band_sizes[g] / band->energy);
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band->thr = band->energy * 0.001258925f;
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band->nz_lines = form_factor * sqrtf(Temp);
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start += band_sizes[g];
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wstart += band_sizes[g];
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}
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}
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}
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static void psy_hp_filter_mips(const float *firbuf, float *hpfsmpl, const float * psy_fir_coeffs)
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{
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float sum1, sum2, sum3, sum4;
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float *fb = (float*)firbuf;
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float *fb_end = fb + AAC_BLOCK_SIZE_LONG;
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float *hp = hpfsmpl;
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float coeff0 = psy_fir_coeffs[1];
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float coeff1 = psy_fir_coeffs[3];
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float coeff2 = psy_fir_coeffs[5];
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float coeff3 = psy_fir_coeffs[7];
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float coeff4 = psy_fir_coeffs[9];
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__asm__ volatile (
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".set push \n\t"
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".set noreorder \n\t"
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"li.s $f12, 32768 \n\t"
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"1: \n\t"
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"lwc1 $f0, 40(%[fb]) \n\t"
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"lwc1 $f1, 4(%[fb]) \n\t"
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"lwc1 $f2, 80(%[fb]) \n\t"
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"lwc1 $f3, 44(%[fb]) \n\t"
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"lwc1 $f4, 8(%[fb]) \n\t"
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"madd.s %[sum1], $f0, $f1, %[coeff0] \n\t"
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"lwc1 $f5, 84(%[fb]) \n\t"
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"lwc1 $f6, 48(%[fb]) \n\t"
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"madd.s %[sum2], $f3, $f4, %[coeff0] \n\t"
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"lwc1 $f7, 12(%[fb]) \n\t"
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"madd.s %[sum1], %[sum1], $f2, %[coeff0] \n\t"
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"lwc1 $f8, 88(%[fb]) \n\t"
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"lwc1 $f9, 52(%[fb]) \n\t"
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"madd.s %[sum2], %[sum2], $f5, %[coeff0] \n\t"
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"madd.s %[sum3], $f6, $f7, %[coeff0] \n\t"
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"lwc1 $f10, 16(%[fb]) \n\t"
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"lwc1 $f11, 92(%[fb]) \n\t"
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"madd.s %[sum1], %[sum1], $f7, %[coeff1] \n\t"
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"lwc1 $f1, 72(%[fb]) \n\t"
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"madd.s %[sum3], %[sum3], $f8, %[coeff0] \n\t"
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"madd.s %[sum4], $f9, $f10, %[coeff0] \n\t"
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"madd.s %[sum2], %[sum2], $f10, %[coeff1] \n\t"
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"madd.s %[sum1], %[sum1], $f1, %[coeff1] \n\t"
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"lwc1 $f4, 76(%[fb]) \n\t"
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"lwc1 $f8, 20(%[fb]) \n\t"
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"madd.s %[sum4], %[sum4], $f11, %[coeff0] \n\t"
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"lwc1 $f11, 24(%[fb]) \n\t"
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"madd.s %[sum2], %[sum2], $f4, %[coeff1] \n\t"
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"madd.s %[sum1], %[sum1], $f8, %[coeff2] \n\t"
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"madd.s %[sum3], %[sum3], $f8, %[coeff1] \n\t"
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"madd.s %[sum4], %[sum4], $f11, %[coeff1] \n\t"
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"lwc1 $f7, 64(%[fb]) \n\t"
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"madd.s %[sum2], %[sum2], $f11, %[coeff2] \n\t"
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"lwc1 $f10, 68(%[fb]) \n\t"
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"madd.s %[sum3], %[sum3], $f2, %[coeff1] \n\t"
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"madd.s %[sum4], %[sum4], $f5, %[coeff1] \n\t"
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"madd.s %[sum1], %[sum1], $f7, %[coeff2] \n\t"
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"madd.s %[sum2], %[sum2], $f10, %[coeff2] \n\t"
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"lwc1 $f2, 28(%[fb]) \n\t"
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"lwc1 $f5, 32(%[fb]) \n\t"
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"lwc1 $f8, 56(%[fb]) \n\t"
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"lwc1 $f11, 60(%[fb]) \n\t"
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"madd.s %[sum3], %[sum3], $f2, %[coeff2] \n\t"
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"madd.s %[sum4], %[sum4], $f5, %[coeff2] \n\t"
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"madd.s %[sum1], %[sum1], $f2, %[coeff3] \n\t"
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"madd.s %[sum2], %[sum2], $f5, %[coeff3] \n\t"
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"madd.s %[sum3], %[sum3], $f1, %[coeff2] \n\t"
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"madd.s %[sum4], %[sum4], $f4, %[coeff2] \n\t"
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"madd.s %[sum1], %[sum1], $f8, %[coeff3] \n\t"
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"madd.s %[sum2], %[sum2], $f11, %[coeff3] \n\t"
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"lwc1 $f1, 36(%[fb]) \n\t"
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PTR_ADDIU "%[fb], %[fb], 16 \n\t"
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"madd.s %[sum4], %[sum4], $f0, %[coeff3] \n\t"
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"madd.s %[sum3], %[sum3], $f1, %[coeff3] \n\t"
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"madd.s %[sum1], %[sum1], $f1, %[coeff4] \n\t"
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"madd.s %[sum2], %[sum2], $f0, %[coeff4] \n\t"
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"madd.s %[sum4], %[sum4], $f10, %[coeff3] \n\t"
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"madd.s %[sum3], %[sum3], $f7, %[coeff3] \n\t"
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"madd.s %[sum1], %[sum1], $f6, %[coeff4] \n\t"
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"madd.s %[sum2], %[sum2], $f9, %[coeff4] \n\t"
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"madd.s %[sum4], %[sum4], $f6, %[coeff4] \n\t"
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"madd.s %[sum3], %[sum3], $f3, %[coeff4] \n\t"
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"mul.s %[sum1], %[sum1], $f12 \n\t"
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"mul.s %[sum2], %[sum2], $f12 \n\t"
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"madd.s %[sum4], %[sum4], $f11, %[coeff4] \n\t"
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"madd.s %[sum3], %[sum3], $f8, %[coeff4] \n\t"
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"swc1 %[sum1], 0(%[hp]) \n\t"
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"swc1 %[sum2], 4(%[hp]) \n\t"
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"mul.s %[sum4], %[sum4], $f12 \n\t"
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"mul.s %[sum3], %[sum3], $f12 \n\t"
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"swc1 %[sum4], 12(%[hp]) \n\t"
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"swc1 %[sum3], 8(%[hp]) \n\t"
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"bne %[fb], %[fb_end], 1b \n\t"
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PTR_ADDIU "%[hp], %[hp], 16 \n\t"
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".set pop \n\t"
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: [sum1]"=&f"(sum1), [sum2]"=&f"(sum2),
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[sum3]"=&f"(sum3), [sum4]"=&f"(sum4),
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[fb]"+r"(fb), [hp]"+r"(hp)
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: [coeff0]"f"(coeff0), [coeff1]"f"(coeff1),
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[coeff2]"f"(coeff2), [coeff3]"f"(coeff3),
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[coeff4]"f"(coeff4), [fb_end]"r"(fb_end)
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: "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6",
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"$f7", "$f8", "$f9", "$f10", "$f11", "$f12",
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"memory"
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);
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}
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#define calc_thr_3gpp calc_thr_3gpp_mips
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#define psy_hp_filter psy_hp_filter_mips
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#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
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#endif /* AVCODEC_MIPS_AACPSY_MIPS_H */
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