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109 lines
4.6 KiB
109 lines
4.6 KiB
12 years ago
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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: Branimir Vasic (bvasic@mips.com)
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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: libavutil/float_dsp.c
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*/
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#include "libavutil/float_dsp.h"
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static void vector_fmul_mips(float *dst, const float *src0, const float *src1,
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int len)
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{
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int i;
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if (len & 3) {
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for (i = 0; i < len; i++)
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dst[i] = src0[i] * src1[i];
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} else {
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float *d = (float *)dst;
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float *d_end = d + len;
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float *s0 = (float *)src0;
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float *s1 = (float *)src1;
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float src0_0, src0_1, src0_2, src0_3;
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float src1_0, src1_1, src1_2, src1_3;
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__asm__ volatile (
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"1: \n\t"
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"lwc1 %[src0_0], 0(%[s0]) \n\t"
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"lwc1 %[src1_0], 0(%[s1]) \n\t"
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"lwc1 %[src0_1], 4(%[s0]) \n\t"
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"lwc1 %[src1_1], 4(%[s1]) \n\t"
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"lwc1 %[src0_2], 8(%[s0]) \n\t"
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"lwc1 %[src1_2], 8(%[s1]) \n\t"
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"lwc1 %[src0_3], 12(%[s0]) \n\t"
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"lwc1 %[src1_3], 12(%[s1]) \n\t"
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"mul.s %[src0_0], %[src0_0], %[src1_0] \n\t"
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"mul.s %[src0_1], %[src0_1], %[src1_1] \n\t"
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"mul.s %[src0_2], %[src0_2], %[src1_2] \n\t"
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"mul.s %[src0_3], %[src0_3], %[src1_3] \n\t"
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"swc1 %[src0_0], 0(%[d]) \n\t"
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"swc1 %[src0_1], 4(%[d]) \n\t"
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"swc1 %[src0_2], 8(%[d]) \n\t"
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"swc1 %[src0_3], 12(%[d]) \n\t"
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"addiu %[s0], %[s0], 16 \n\t"
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"addiu %[s1], %[s1], 16 \n\t"
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"addiu %[d], %[d], 16 \n\t"
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"bne %[d], %[d_end], 1b \n\t"
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: [src0_0]"=&f"(src0_0), [src0_1]"=&f"(src0_1),
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[src0_2]"=&f"(src0_2), [src0_3]"=&f"(src0_3),
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[src1_0]"=&f"(src1_0), [src1_1]"=&f"(src1_1),
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[src1_2]"=&f"(src1_2), [src1_3]"=&f"(src1_3),
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[d]"+r"(d), [s0]"+r"(s0), [s1]"+r"(s1)
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: [d_end]"r"(d_end)
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: "memory"
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);
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}
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}
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void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp) {
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fdsp->vector_fmul = vector_fmul_mips;
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}
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