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FFmpeg/libavcodec/mips/compute_antialias_float.h
Vicente Olivert Riera ad16eff64b mips: add support for R6 
Understanding the mips32r6 and mips64r6 ISAs in the configure script is
not enough. In order to have full support for MIPS R6 in FFmpeg we need
to be able to build it, and for that we need to make sure we don't use
incompatible assembler code which makes the build fail. Ifdefing the
offending code is sufficient to fix the problem.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-03-09 20:05:04 +01:00

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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)
*
* Compute antialias function optimised 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/mpegaudiodec.c
*/
#ifndef AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H
#define AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H
#include "libavutil/mips/asmdefs.h"
#if HAVE_INLINE_ASM
#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
static void compute_antialias_mips_float(MPADecodeContext *s,
GranuleDef *g)
{
float *ptr, *ptr_end;
float *csa = &csa_table[0][0];
/* temporary variables */
float in1, in2, in3, in4, in5, in6, in7, in8;
float out1, out2, out3, out4;
ptr = g->sb_hybrid + 18;
/* we antialias only "long" bands */
if (g->block_type == 2) {
if (!g->switch_point)
return;
/* XXX: check this for 8000Hz case */
ptr_end = ptr + 18;
} else {
ptr_end = ptr + 558;
}
/**
* instructions are scheduled to minimize pipeline stall.
*/
__asm__ volatile (
"compute_antialias_float_loop%=: \t\n"
"lwc1 %[in1], -1*4(%[ptr]) \t\n"
"lwc1 %[in2], 0(%[csa]) \t\n"
"lwc1 %[in3], 1*4(%[csa]) \t\n"
"lwc1 %[in4], 0(%[ptr]) \t\n"
"lwc1 %[in5], -2*4(%[ptr]) \t\n"
"lwc1 %[in6], 4*4(%[csa]) \t\n"
"mul.s %[out1], %[in1], %[in2] \t\n"
"mul.s %[out2], %[in1], %[in3] \t\n"
"lwc1 %[in7], 5*4(%[csa]) \t\n"
"lwc1 %[in8], 1*4(%[ptr]) \t\n"
"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n"
"madd.s %[out2], %[out2], %[in2], %[in4] \t\n"
"mul.s %[out3], %[in5], %[in6] \t\n"
"mul.s %[out4], %[in5], %[in7] \t\n"
"lwc1 %[in1], -3*4(%[ptr]) \t\n"
"swc1 %[out1], -1*4(%[ptr]) \t\n"
"swc1 %[out2], 0(%[ptr]) \t\n"
"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n"
"madd.s %[out4], %[out4], %[in6], %[in8] \t\n"
"lwc1 %[in2], 8*4(%[csa]) \t\n"
"swc1 %[out3], -2*4(%[ptr]) \t\n"
"swc1 %[out4], 1*4(%[ptr]) \t\n"
"lwc1 %[in3], 9*4(%[csa]) \t\n"
"lwc1 %[in4], 2*4(%[ptr]) \t\n"
"mul.s %[out1], %[in1], %[in2] \t\n"
"lwc1 %[in5], -4*4(%[ptr]) \t\n"
"lwc1 %[in6], 12*4(%[csa]) \t\n"
"mul.s %[out2], %[in1], %[in3] \t\n"
"lwc1 %[in7], 13*4(%[csa]) \t\n"
"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n"
"lwc1 %[in8], 3*4(%[ptr]) \t\n"
"mul.s %[out3], %[in5], %[in6] \t\n"
"madd.s %[out2], %[out2], %[in2], %[in4] \t\n"
"mul.s %[out4], %[in5], %[in7] \t\n"
"swc1 %[out1], -3*4(%[ptr]) \t\n"
"lwc1 %[in1], -5*4(%[ptr]) \t\n"
"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n"
"swc1 %[out2], 2*4(%[ptr]) \t\n"
"madd.s %[out4], %[out4], %[in6], %[in8] \t\n"
"lwc1 %[in2], 16*4(%[csa]) \t\n"
"lwc1 %[in3], 17*4(%[csa]) \t\n"
"swc1 %[out3], -4*4(%[ptr]) \t\n"
"lwc1 %[in4], 4*4(%[ptr]) \t\n"
"swc1 %[out4], 3*4(%[ptr]) \t\n"
"mul.s %[out1], %[in1], %[in2] \t\n"
"mul.s %[out2], %[in1], %[in3] \t\n"
"lwc1 %[in5], -6*4(%[ptr]) \t\n"
"lwc1 %[in6], 20*4(%[csa]) \t\n"
"lwc1 %[in7], 21*4(%[csa]) \t\n"
"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n"
"madd.s %[out2], %[out2], %[in2], %[in4] \t\n"
"lwc1 %[in8], 5*4(%[ptr]) \t\n"
"mul.s %[out3], %[in5], %[in6] \t\n"
"mul.s %[out4], %[in5], %[in7] \t\n"
"swc1 %[out1], -5*4(%[ptr]) \t\n"
"swc1 %[out2], 4*4(%[ptr]) \t\n"
"lwc1 %[in1], -7*4(%[ptr]) \t\n"
"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n"
"madd.s %[out4], %[out4], %[in6], %[in8] \t\n"
"lwc1 %[in2], 24*4(%[csa]) \t\n"
"lwc1 %[in3], 25*4(%[csa]) \t\n"
"lwc1 %[in4], 6*4(%[ptr]) \t\n"
"swc1 %[out3], -6*4(%[ptr]) \t\n"
"swc1 %[out4], 5*4(%[ptr]) \t\n"
"mul.s %[out1], %[in1], %[in2] \t\n"
"lwc1 %[in5], -8*4(%[ptr]) \t\n"
"mul.s %[out2], %[in1], %[in3] \t\n"
"lwc1 %[in6], 28*4(%[csa]) \t\n"
"lwc1 %[in7], 29*4(%[csa]) \t\n"
"nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n"
"lwc1 %[in8], 7*4(%[ptr]) \t\n"
"madd.s %[out2], %[out2], %[in2], %[in4] \t\n"
"mul.s %[out3], %[in5], %[in6] \t\n"
"mul.s %[out4], %[in5], %[in7] \t\n"
"swc1 %[out1], -7*4(%[ptr]) \t\n"
"swc1 %[out2], 6*4(%[ptr]) \t\n"
PTR_ADDIU "%[ptr],%[ptr], 72 \t\n"
"nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n"
"madd.s %[out4], %[out4], %[in6], %[in8] \t\n"
"swc1 %[out3], -26*4(%[ptr]) \t\n"
"swc1 %[out4], -11*4(%[ptr]) \t\n"
"bne %[ptr], %[ptr_end], compute_antialias_float_loop%= \t\n"
: [ptr] "+r" (ptr),
[in1] "=&f" (in1), [in2] "=&f" (in2),
[in3] "=&f" (in3), [in4] "=&f" (in4),
[in5] "=&f" (in5), [in6] "=&f" (in6),
[in7] "=&f" (in7), [in8] "=&f" (in8),
[out1] "=&f" (out1), [out2] "=&f" (out2),
[out3] "=&f" (out3), [out4] "=&f" (out4)
: [csa] "r" (csa), [ptr_end] "r" (ptr_end)
: "memory"
);
}
#define compute_antialias compute_antialias_mips_float
#endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
#endif /* HAVE_INLINE_ASM */
#endif /* AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H */
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