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FFmpeg/libavcodec/mips/aacpsy_mips.h
Shiyou Yin bd4f37f2eb avcodec/mips: Fix segfault in imdct36_mips_float. 
'li.s' is a synthesized instruction, it does not work properly
when compiled with clang on mips, and A segfault occurred.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2020-07-30 00:23:45 +02:00

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/*
* Copyright (c) 2012
* MIPS Technologies, Inc., California.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Author: Bojan Zivkovic (bojan@mips.com)
*
* AAC encoder psychoacoustic model routines optimized
* for MIPS floating-point architecture
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Reference: libavcodec/aacpsy.c
*/
#ifndef AVCODEC_MIPS_AACPSY_MIPS_H
#define AVCODEC_MIPS_AACPSY_MIPS_H
#include "libavutil/mips/asmdefs.h"
#if HAVE_INLINE_ASM && HAVE_MIPSFPU && ( PSY_LAME_FIR_LEN == 21 )
#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
static void calc_thr_3gpp_mips(const FFPsyWindowInfo *wi, const int num_bands,
AacPsyChannel *pch, const uint8_t *band_sizes,
const float *coefs, const int cutoff)
{
int i, w, g;
int start = 0, wstart = 0;
for (w = 0; w < wi->num_windows*16; w += 16) {
wstart = 0;
for (g = 0; g < num_bands; g++) {
AacPsyBand *band = &pch->band[w+g];
float form_factor = 0.0f;
float Temp;
band->energy = 0.0f;
if (wstart < cutoff) {
for (i = 0; i < band_sizes[g]; i+=4) {
float a, b, c, d;
float ax, bx, cx, dx;
float *cf = (float *)&coefs[start+i];
__asm__ volatile (
"lwc1 %[a], 0(%[cf]) \n\t"
"lwc1 %[b], 4(%[cf]) \n\t"
"lwc1 %[c], 8(%[cf]) \n\t"
"lwc1 %[d], 12(%[cf]) \n\t"
"abs.s %[a], %[a] \n\t"
"abs.s %[b], %[b] \n\t"
"abs.s %[c], %[c] \n\t"
"abs.s %[d], %[d] \n\t"
"sqrt.s %[ax], %[a] \n\t"
"sqrt.s %[bx], %[b] \n\t"
"sqrt.s %[cx], %[c] \n\t"
"sqrt.s %[dx], %[d] \n\t"
"madd.s %[e], %[e], %[a], %[a] \n\t"
"madd.s %[e], %[e], %[b], %[b] \n\t"
"madd.s %[e], %[e], %[c], %[c] \n\t"
"madd.s %[e], %[e], %[d], %[d] \n\t"
"add.s %[f], %[f], %[ax] \n\t"
"add.s %[f], %[f], %[bx] \n\t"
"add.s %[f], %[f], %[cx] \n\t"
"add.s %[f], %[f], %[dx] \n\t"
: [a]"=&f"(a), [b]"=&f"(b),
[c]"=&f"(c), [d]"=&f"(d),
[e]"+f"(band->energy), [f]"+f"(form_factor),
[ax]"=&f"(ax), [bx]"=&f"(bx),
[cx]"=&f"(cx), [dx]"=&f"(dx)
: [cf]"r"(cf)
: "memory"
);
}
}
Temp = sqrtf((float)band_sizes[g] / band->energy);
band->thr = band->energy * 0.001258925f;
band->nz_lines = form_factor * sqrtf(Temp);
start += band_sizes[g];
wstart += band_sizes[g];
}
}
}
static void psy_hp_filter_mips(const float *firbuf, float *hpfsmpl, const float * psy_fir_coeffs)
{
float sum1, sum2, sum3, sum4;
float *fb = (float*)firbuf;
float *fb_end = fb + AAC_BLOCK_SIZE_LONG;
float *hp = hpfsmpl;
float coeff0 = psy_fir_coeffs[1];
float coeff1 = psy_fir_coeffs[3];
float coeff2 = psy_fir_coeffs[5];
float coeff3 = psy_fir_coeffs[7];
float coeff4 = psy_fir_coeffs[9];
float f1 = 32768.0;
__asm__ volatile (
".set push \n\t"
".set noreorder \n\t"
"1: \n\t"
"lwc1 $f0, 40(%[fb]) \n\t"
"lwc1 $f1, 4(%[fb]) \n\t"
"lwc1 $f2, 80(%[fb]) \n\t"
"lwc1 $f3, 44(%[fb]) \n\t"
"lwc1 $f4, 8(%[fb]) \n\t"
"madd.s %[sum1], $f0, $f1, %[coeff0] \n\t"
"lwc1 $f5, 84(%[fb]) \n\t"
"lwc1 $f6, 48(%[fb]) \n\t"
"madd.s %[sum2], $f3, $f4, %[coeff0] \n\t"
"lwc1 $f7, 12(%[fb]) \n\t"
"madd.s %[sum1], %[sum1], $f2, %[coeff0] \n\t"
"lwc1 $f8, 88(%[fb]) \n\t"
"lwc1 $f9, 52(%[fb]) \n\t"
"madd.s %[sum2], %[sum2], $f5, %[coeff0] \n\t"
"madd.s %[sum3], $f6, $f7, %[coeff0] \n\t"
"lwc1 $f10, 16(%[fb]) \n\t"
"lwc1 $f11, 92(%[fb]) \n\t"
"madd.s %[sum1], %[sum1], $f7, %[coeff1] \n\t"
"lwc1 $f1, 72(%[fb]) \n\t"
"madd.s %[sum3], %[sum3], $f8, %[coeff0] \n\t"
"madd.s %[sum4], $f9, $f10, %[coeff0] \n\t"
"madd.s %[sum2], %[sum2], $f10, %[coeff1] \n\t"
"madd.s %[sum1], %[sum1], $f1, %[coeff1] \n\t"
"lwc1 $f4, 76(%[fb]) \n\t"
"lwc1 $f8, 20(%[fb]) \n\t"
"madd.s %[sum4], %[sum4], $f11, %[coeff0] \n\t"
"lwc1 $f11, 24(%[fb]) \n\t"
"madd.s %[sum2], %[sum2], $f4, %[coeff1] \n\t"
"madd.s %[sum1], %[sum1], $f8, %[coeff2] \n\t"
"madd.s %[sum3], %[sum3], $f8, %[coeff1] \n\t"
"madd.s %[sum4], %[sum4], $f11, %[coeff1] \n\t"
"lwc1 $f7, 64(%[fb]) \n\t"
"madd.s %[sum2], %[sum2], $f11, %[coeff2] \n\t"
"lwc1 $f10, 68(%[fb]) \n\t"
"madd.s %[sum3], %[sum3], $f2, %[coeff1] \n\t"
"madd.s %[sum4], %[sum4], $f5, %[coeff1] \n\t"
"madd.s %[sum1], %[sum1], $f7, %[coeff2] \n\t"
"madd.s %[sum2], %[sum2], $f10, %[coeff2] \n\t"
"lwc1 $f2, 28(%[fb]) \n\t"
"lwc1 $f5, 32(%[fb]) \n\t"
"lwc1 $f8, 56(%[fb]) \n\t"
"lwc1 $f11, 60(%[fb]) \n\t"
"madd.s %[sum3], %[sum3], $f2, %[coeff2] \n\t"
"madd.s %[sum4], %[sum4], $f5, %[coeff2] \n\t"
"madd.s %[sum1], %[sum1], $f2, %[coeff3] \n\t"
"madd.s %[sum2], %[sum2], $f5, %[coeff3] \n\t"
"madd.s %[sum3], %[sum3], $f1, %[coeff2] \n\t"
"madd.s %[sum4], %[sum4], $f4, %[coeff2] \n\t"
"madd.s %[sum1], %[sum1], $f8, %[coeff3] \n\t"
"madd.s %[sum2], %[sum2], $f11, %[coeff3] \n\t"
"lwc1 $f1, 36(%[fb]) \n\t"
PTR_ADDIU "%[fb], %[fb], 16 \n\t"
"madd.s %[sum4], %[sum4], $f0, %[coeff3] \n\t"
"madd.s %[sum3], %[sum3], $f1, %[coeff3] \n\t"
"madd.s %[sum1], %[sum1], $f1, %[coeff4] \n\t"
"madd.s %[sum2], %[sum2], $f0, %[coeff4] \n\t"
"madd.s %[sum4], %[sum4], $f10, %[coeff3] \n\t"
"madd.s %[sum3], %[sum3], $f7, %[coeff3] \n\t"
"madd.s %[sum1], %[sum1], $f6, %[coeff4] \n\t"
"madd.s %[sum2], %[sum2], $f9, %[coeff4] \n\t"
"madd.s %[sum4], %[sum4], $f6, %[coeff4] \n\t"
"madd.s %[sum3], %[sum3], $f3, %[coeff4] \n\t"
"mul.s %[sum1], %[sum1], %[f1] \n\t"
"mul.s %[sum2], %[sum2], %[f1] \n\t"
"madd.s %[sum4], %[sum4], $f11, %[coeff4] \n\t"
"madd.s %[sum3], %[sum3], $f8, %[coeff4] \n\t"
"swc1 %[sum1], 0(%[hp]) \n\t"
"swc1 %[sum2], 4(%[hp]) \n\t"
"mul.s %[sum4], %[sum4], %[f1] \n\t"
"mul.s %[sum3], %[sum3], %[f1] \n\t"
"swc1 %[sum4], 12(%[hp]) \n\t"
"swc1 %[sum3], 8(%[hp]) \n\t"
"bne %[fb], %[fb_end], 1b \n\t"
PTR_ADDIU "%[hp], %[hp], 16 \n\t"
".set pop \n\t"
: [sum1]"=&f"(sum1), [sum2]"=&f"(sum2),
[sum3]"=&f"(sum3), [sum4]"=&f"(sum4),
[fb]"+r"(fb), [hp]"+r"(hp)
: [coeff0]"f"(coeff0), [coeff1]"f"(coeff1),
[coeff2]"f"(coeff2), [coeff3]"f"(coeff3),
[coeff4]"f"(coeff4), [fb_end]"r"(fb_end), [f1]"f"(f1)
: "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6",
"$f7", "$f8", "$f9", "$f10", "$f11",
"memory"
);
}
#define calc_thr_3gpp calc_thr_3gpp_mips
#define psy_hp_filter psy_hp_filter_mips
#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
#endif /* AVCODEC_MIPS_AACPSY_MIPS_H */
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