mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
d23aefa498
List of clobbered registers fixed and added where it is lacking. Signed-off-by: Nedeljko Babic <nbabic@mips.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
90 lines
3.7 KiB
C
90 lines
3.7 KiB
C
/*
|
|
* 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: Nedeljko Babic (nbabic@mips.com)
|
|
*
|
|
* Math operations 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/celp_math.c
|
|
*/
|
|
#include "config.h"
|
|
#include "libavcodec/celp_math.h"
|
|
|
|
#if HAVE_INLINE_ASM
|
|
static float ff_dot_productf_mips(const float* a, const float* b,
|
|
int length)
|
|
{
|
|
float sum;
|
|
const float* a_end = a + length;
|
|
|
|
__asm__ volatile (
|
|
"mtc1 $zero, %[sum] \n\t"
|
|
"blez %[length], ff_dot_productf_end%= \n\t"
|
|
"ff_dot_productf_madd%=: \n\t"
|
|
"lwc1 $f2, 0(%[a]) \n\t"
|
|
"lwc1 $f1, 0(%[b]) \n\t"
|
|
"addiu %[a], %[a], 4 \n\t"
|
|
"addiu %[b], %[b], 4 \n\t"
|
|
"madd.s %[sum], %[sum], $f1, $f2 \n\t"
|
|
"bne %[a], %[a_end], ff_dot_productf_madd%= \n\t"
|
|
"ff_dot_productf_end%=: \n\t"
|
|
|
|
: [sum] "=&f" (sum), [a] "+r" (a), [b] "+r" (b)
|
|
: [a_end]"r"(a_end), [length] "r" (length)
|
|
: "$f1", "$f2", "memory"
|
|
);
|
|
return sum;
|
|
}
|
|
#endif /* HAVE_INLINE_ASM */
|
|
|
|
void ff_celp_math_init_mips(CELPMContext *c)
|
|
{
|
|
#if HAVE_INLINE_ASM
|
|
c->dot_productf = ff_dot_productf_mips;
|
|
#endif
|
|
}
|