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third_party_ffmpeg/libavcodec/mips/aacdec_mips.h
Mirjana Vulin 2b6a8187a6 mips: optimization for float aac decoder (core module) 
Signed-off-by: Mirjana Vulin <mvulin@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-31 01:23:09 +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.
*
* Authors: Darko Laus (darko@mips.com)
* Djordje Pesut (djordje@mips.com)
* Mirjana Vulin (mvulin@mips.com)
*
* AAC Spectral Band Replication decoding functions optimized for MIPS
*
* 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/aacdec.c
*/
#ifndef AVCODEC_MIPS_AACDEC_FLOAT_H
#define AVCODEC_MIPS_AACDEC_FLOAT_H
#include "libavcodec/aac.h"
#if HAVE_INLINE_ASM && HAVE_MIPSFPU
static inline float *VMUL2_mips(float *dst, const float *v, unsigned idx,
const float *scale)
{
float temp0, temp1, temp2;
int temp3, temp4;
float *ret;
__asm__ volatile(
"andi %[temp3], %[idx], 15 \n\t"
"ext %[temp4], %[idx], 4, 4 \n\t"
"sll %[temp3], %[temp3], 2 \n\t"
"sll %[temp4], %[temp4], 2 \n\t"
"lwc1 %[temp2], 0(%[scale]) \n\t"
"lwxc1 %[temp0], %[temp3](%[v]) \n\t"
"lwxc1 %[temp1], %[temp4](%[v]) \n\t"
"mul.s %[temp0], %[temp0], %[temp2] \n\t"
"mul.s %[temp1], %[temp1], %[temp2] \n\t"
"addiu %[ret], %[dst], 8 \n\t"
"swc1 %[temp0], 0(%[dst]) \n\t"
"swc1 %[temp1], 4(%[dst]) \n\t"
: [temp0]"=&f"(temp0), [temp1]"=&f"(temp1),
[temp2]"=&f"(temp2), [temp3]"=&r"(temp3),
[temp4]"=&r"(temp4), [ret]"=&r"(ret)
: [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
[dst]"r"(dst)
: "memory"
);
return ret;
}
static inline float *VMUL4_mips(float *dst, const float *v, unsigned idx,
const float *scale)
{
int temp0, temp1, temp2, temp3;
float temp4, temp5, temp6, temp7, temp8;
float *ret;
__asm__ volatile(
"andi %[temp0], %[idx], 3 \n\t"
"ext %[temp1], %[idx], 2, 2 \n\t"
"ext %[temp2], %[idx], 4, 2 \n\t"
"ext %[temp3], %[idx], 6, 2 \n\t"
"sll %[temp0], %[temp0], 2 \n\t"
"sll %[temp1], %[temp1], 2 \n\t"
"sll %[temp2], %[temp2], 2 \n\t"
"sll %[temp3], %[temp3], 2 \n\t"
"lwc1 %[temp4], 0(%[scale]) \n\t"
"lwxc1 %[temp5], %[temp0](%[v]) \n\t"
"lwxc1 %[temp6], %[temp1](%[v]) \n\t"
"lwxc1 %[temp7], %[temp2](%[v]) \n\t"
"lwxc1 %[temp8], %[temp3](%[v]) \n\t"
"mul.s %[temp5], %[temp5], %[temp4] \n\t"
"mul.s %[temp6], %[temp6], %[temp4] \n\t"
"mul.s %[temp7], %[temp7], %[temp4] \n\t"
"mul.s %[temp8], %[temp8], %[temp4] \n\t"
"addiu %[ret], %[dst], 16 \n\t"
"swc1 %[temp5], 0(%[dst]) \n\t"
"swc1 %[temp6], 4(%[dst]) \n\t"
"swc1 %[temp7], 8(%[dst]) \n\t"
"swc1 %[temp8], 12(%[dst]) \n\t"
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
[temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
[temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
[temp6]"=&f"(temp6), [temp7]"=&f"(temp7),
[temp8]"=&f"(temp8), [ret]"=&r"(ret)
: [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
[dst]"r"(dst)
: "memory"
);
return ret;
}
static inline float *VMUL2S_mips(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale)
{
int temp0, temp1, temp2, temp3, temp4, temp5;
float temp6, temp7, temp8, temp9;
float *ret;
__asm__ volatile(
"andi %[temp0], %[idx], 15 \n\t"
"ext %[temp1], %[idx], 4, 4 \n\t"
"lw %[temp4], 0(%[scale]) \n\t"
"srl %[temp2], %[sign], 1 \n\t"
"sll %[temp3], %[sign], 31 \n\t"
"sll %[temp2], %[temp2], 31 \n\t"
"sll %[temp0], %[temp0], 2 \n\t"
"sll %[temp1], %[temp1], 2 \n\t"
"lwxc1 %[temp8], %[temp0](%[v]) \n\t"
"lwxc1 %[temp9], %[temp1](%[v]) \n\t"
"xor %[temp5], %[temp4], %[temp2] \n\t"
"xor %[temp4], %[temp4], %[temp3] \n\t"
"mtc1 %[temp5], %[temp6] \n\t"
"mtc1 %[temp4], %[temp7] \n\t"
"mul.s %[temp8], %[temp8], %[temp6] \n\t"
"mul.s %[temp9], %[temp9], %[temp7] \n\t"
"addiu %[ret], %[dst], 8 \n\t"
"swc1 %[temp8], 0(%[dst]) \n\t"
"swc1 %[temp9], 4(%[dst]) \n\t"
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
[temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
[temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
[temp6]"=&f"(temp6), [temp7]"=&f"(temp7),
[temp8]"=&f"(temp8), [temp9]"=&f"(temp9),
[ret]"=&r"(ret)
: [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
[dst]"r"(dst), [sign]"r"(sign)
: "memory"
);
return ret;
}
static inline float *VMUL4S_mips(float *dst, const float *v, unsigned idx,
unsigned sign, const float *scale)
{
int temp0, temp1, temp2, temp3, temp4;
float temp10, temp11, temp12, temp13, temp14, temp15, temp16, temp17;
float *ret;
unsigned int mask = 1U << 31;
__asm__ volatile(
"lw %[temp0], 0(%[scale]) \n\t"
"and %[temp1], %[idx], 3 \n\t"
"ext %[temp2], %[idx], 2, 2 \n\t"
"ext %[temp3], %[idx], 4, 2 \n\t"
"ext %[temp4], %[idx], 6, 2 \n\t"
"sll %[temp1], %[temp1], 2 \n\t"
"sll %[temp2], %[temp2], 2 \n\t"
"sll %[temp3], %[temp3], 2 \n\t"
"sll %[temp4], %[temp4], 2 \n\t"
"lwxc1 %[temp10], %[temp1](%[v]) \n\t"
"lwxc1 %[temp11], %[temp2](%[v]) \n\t"
"lwxc1 %[temp12], %[temp3](%[v]) \n\t"
"lwxc1 %[temp13], %[temp4](%[v]) \n\t"
"and %[temp1], %[sign], %[mask] \n\t"
"ext %[temp2], %[idx], 12, 1 \n\t"
"ext %[temp3], %[idx], 13, 1 \n\t"
"ext %[temp4], %[idx], 14, 1 \n\t"
"sllv %[sign], %[sign], %[temp2] \n\t"
"xor %[temp1], %[temp0], %[temp1] \n\t"
"and %[temp2], %[sign], %[mask] \n\t"
"mtc1 %[temp1], %[temp14] \n\t"
"xor %[temp2], %[temp0], %[temp2] \n\t"
"sllv %[sign], %[sign], %[temp3] \n\t"
"mtc1 %[temp2], %[temp15] \n\t"
"and %[temp3], %[sign], %[mask] \n\t"
"sllv %[sign], %[sign], %[temp4] \n\t"
"xor %[temp3], %[temp0], %[temp3] \n\t"
"and %[temp4], %[sign], %[mask] \n\t"
"mtc1 %[temp3], %[temp16] \n\t"
"xor %[temp4], %[temp0], %[temp4] \n\t"
"mtc1 %[temp4], %[temp17] \n\t"
"mul.s %[temp10], %[temp10], %[temp14] \n\t"
"mul.s %[temp11], %[temp11], %[temp15] \n\t"
"mul.s %[temp12], %[temp12], %[temp16] \n\t"
"mul.s %[temp13], %[temp13], %[temp17] \n\t"
"addiu %[ret], %[dst], 16 \n\t"
"swc1 %[temp10], 0(%[dst]) \n\t"
"swc1 %[temp11], 4(%[dst]) \n\t"
"swc1 %[temp12], 8(%[dst]) \n\t"
"swc1 %[temp13], 12(%[dst]) \n\t"
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
[temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
[temp4]"=&r"(temp4), [temp10]"=&f"(temp10),
[temp11]"=&f"(temp11), [temp12]"=&f"(temp12),
[temp13]"=&f"(temp13), [temp14]"=&f"(temp14),
[temp15]"=&f"(temp15), [temp16]"=&f"(temp16),
[temp17]"=&f"(temp17), [ret]"=&r"(ret),
[sign]"+r"(sign)
: [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
[dst]"r"(dst), [mask]"r"(mask)
: "memory"
);
return ret;
}
#define VMUL2 VMUL2_mips
#define VMUL4 VMUL4_mips
#define VMUL2S VMUL2S_mips
#define VMUL4S VMUL4S_mips
#endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
#endif /* AVCODEC_MIPS_AACDEC_FLOAT_H */
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