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libavcodec
mips
acelp_vectors_mips.c
Go to the documentation of this file.
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/*
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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 "
config.h
"
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#include "
libavcodec/acelp_vectors.h
"
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#include "
libavutil/mips/asmdefs.h
"
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#if HAVE_INLINE_ASM
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#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
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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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PTR_ADDIU
"%[in_a],8 \n\t"
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PTR_ADDIU
"%[in_b],8 \n\t"
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"swc1 $f2, 0(%[out]) \n\t"
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"swc1 $f5, 4(%[out]) \n\t"
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PTR_ADDIU
"%[out], 8 \n\t"
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"bne %[in_a], %[a_end], ff_weighted_vector_sumf_madd%= \n\t"
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"ff_weighted_vector_sumf_end%=: \n\t"
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: [
out
]
"+r"
(
out
), [in_a]
"+r"
(in_a), [in_b]
"+r"
(in_b)
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: [weight_coeff_a]
"f"
(weight_coeff_a),
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[weight_coeff_b]
"f"
(weight_coeff_b),
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[length]
"r"
(length), [a_end]
"r"
(a_end)
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:
"$f0"
,
"$f1"
,
"$f2"
,
"$f3"
,
"$f4"
,
"$f5"
,
"memory"
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);
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}
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#endif
/* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
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#endif
/* HAVE_INLINE_ASM */
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void
ff_acelp_vectors_init_mips
(
ACELPVContext
*
c
)
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{
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#if HAVE_INLINE_ASM
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#if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
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c->
weighted_vector_sumf
= ff_weighted_vector_sumf_mips;
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#endif
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#endif
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}
asmdefs.h
MIPS assembly defines from sys/asm.h but rewritten for use with C inline assembly (rather than from w...
config.h
ACELPVContext
Definition:
acelp_vectors.h:28
length
GLsizei GLsizei * length
Definition:
opengl_enc.c:115
ACELPVContext::weighted_vector_sumf
void(* weighted_vector_sumf)(float *out, const float *in_a, const float *in_b, float weight_coeff_a, float weight_coeff_b, int length)
float implementation of weighted sum of two vectors.
Definition:
acelp_vectors.h:40
ff_acelp_vectors_init_mips
void ff_acelp_vectors_init_mips(ACELPVContext *c)
Definition:
acelp_vectors_mips.c:99
acelp_vectors.h
PTR_ADDIU
#define PTR_ADDIU
Definition:
asmdefs.h:48
c
static double c[64]
Definition:
vsrc_mptestsrc.c:87
out
FILE * out
Definition:
movenc.c:54
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