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dd0a9b78db
__volatile__ can cause problems with some compilers and volatile is a standard keyword. Found-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
97 lines
4.6 KiB
C
97 lines
4.6 KiB
C
/*
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* Copyright (c) 2012
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* MIPS Technologies, Inc., California.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Nedeljko Babic (nbabic@mips.com)
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*
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* adaptive and fixed codebook vector operations for ACELP-based codecs
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* optimized for MIPS
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Reference: libavcodec/acelp_vectors.c
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*/
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#include "libavcodec/acelp_vectors.h"
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static void ff_weighted_vector_sumf_mips(
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float *out, const float *in_a, const float *in_b,
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float weight_coeff_a, float weight_coeff_b, int length)
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{
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const float *a_end = in_a + length;
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/* loop unrolled two times */
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__asm__ volatile (
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"blez %[length], ff_weighted_vector_sumf_end%= \n\t"
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"ff_weighted_vector_sumf_madd%=: \n\t"
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"lwc1 $f0, 0(%[in_a]) \n\t"
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"lwc1 $f3, 4(%[in_a]) \n\t"
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"lwc1 $f1, 0(%[in_b]) \n\t"
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"lwc1 $f4, 4(%[in_b]) \n\t"
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"mul.s $f2, %[weight_coeff_a], $f0 \n\t"
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"mul.s $f5, %[weight_coeff_a], $f3 \n\t"
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"madd.s $f2, $f2, %[weight_coeff_b], $f1 \n\t"
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"madd.s $f5, $f5, %[weight_coeff_b], $f4 \n\t"
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"addiu %[in_a], 8 \n\t"
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"addiu %[in_b], 8 \n\t"
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"swc1 $f2, 0(%[out]) \n\t"
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"swc1 $f5, 4(%[out]) \n\t"
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"addiu %[out], 8 \n\t"
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"bne %[in_a], %[a_end], ff_weighted_vector_sumf_madd%= \n\t"
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"ff_weighted_vector_sumf_end%=: \n\t"
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: [out] "+r" (out), [in_a] "+r" (in_a), [in_b] "+r" (in_b)
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: [weight_coeff_a] "f" (weight_coeff_a),
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[weight_coeff_b] "f" (weight_coeff_b),
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[length] "r" (length), [a_end]"r"(a_end)
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: "$f0", "$f1", "$f2", "$f3", "$f4", "$f5"
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);
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}
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void ff_acelp_vectors_init_mips(ACELPVContext *c)
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{
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c->weighted_vector_sumf = ff_weighted_vector_sumf_mips;
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}
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