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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: Nedeljko Babic (nbabic@mips.com)
*
* adaptive and fixed codebook vector operations for ACELP-based codecs
* 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/acelp_vectors.c
*/
#include "libavcodec/acelp_vectors.h"
static void ff_weighted_vector_sumf_mips(
float *out, const float *in_a, const float *in_b,
float weight_coeff_a, float weight_coeff_b, int length)
{
const float *a_end = in_a + length;
/* loop unrolled two times */
__asm__ volatile (
"blez %[length], ff_weighted_vector_sumf_end%= \n\t"
"ff_weighted_vector_sumf_madd%=: \n\t"
"lwc1 $f0, 0(%[in_a]) \n\t"
"lwc1 $f3, 4(%[in_a]) \n\t"
"lwc1 $f1, 0(%[in_b]) \n\t"
"lwc1 $f4, 4(%[in_b]) \n\t"
"mul.s $f2, %[weight_coeff_a], $f0 \n\t"
"mul.s $f5, %[weight_coeff_a], $f3 \n\t"
"madd.s $f2, $f2, %[weight_coeff_b], $f1 \n\t"
"madd.s $f5, $f5, %[weight_coeff_b], $f4 \n\t"
"addiu %[in_a], 8 \n\t"
"addiu %[in_b], 8 \n\t"
"swc1 $f2, 0(%[out]) \n\t"
"swc1 $f5, 4(%[out]) \n\t"
"addiu %[out], 8 \n\t"
"bne %[in_a], %[a_end], ff_weighted_vector_sumf_madd%= \n\t"
"ff_weighted_vector_sumf_end%=: \n\t"
: [out] "+r" (out), [in_a] "+r" (in_a), [in_b] "+r" (in_b)
: [weight_coeff_a] "f" (weight_coeff_a),
[weight_coeff_b] "f" (weight_coeff_b),
[length] "r" (length), [a_end]"r"(a_end)
: "$f0", "$f1", "$f2", "$f3", "$f4", "$f5"
);
}
void ff_acelp_vectors_init_mips(ACELPVContext *c)
{
c->weighted_vector_sumf = ff_weighted_vector_sumf_mips;
}
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