1/*
2 * Copyright (c) 2012
3 *      MIPS Technologies, Inc., California.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
14 *    contributors may be used to endorse or promote products derived from
15 *    this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * Author:  Nedeljko Babic (nbabic@mips.com)
30 *
31 * adaptive and fixed codebook vector operations for ACELP-based codecs
32 * optimized for MIPS
33 *
34 * This file is part of FFmpeg.
35 *
36 * FFmpeg is free software; you can redistribute it and/or
37 * modify it under the terms of the GNU Lesser General Public
38 * License as published by the Free Software Foundation; either
39 * version 2.1 of the License, or (at your option) any later version.
40 *
41 * FFmpeg is distributed in the hope that it will be useful,
42 * but WITHOUT ANY WARRANTY; without even the implied warranty of
43 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
44 * Lesser General Public License for more details.
45 *
46 * You should have received a copy of the GNU Lesser General Public
47 * License along with FFmpeg; if not, write to the Free Software
48 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
49 */
50
51/**
52 * @file
53 * Reference: libavcodec/acelp_vectors.c
54 */
55#include "config.h"
56#include "libavcodec/acelp_vectors.h"
57
58#if HAVE_INLINE_ASM
59static void ff_weighted_vector_sumf_mips(
60                  float *out, const float *in_a, const float *in_b,
61                  float weight_coeff_a, float weight_coeff_b, int length)
62{
63    const float *a_end = in_a + length;
64
65    /* loop unrolled two times */
66    __asm__ volatile (
67        "blez   %[length], ff_weighted_vector_sumf_end%=                     \n\t"
68
69        "ff_weighted_vector_sumf_madd%=:                                     \n\t"
70        "lwc1   $f0,       0(%[in_a])                                        \n\t"
71        "lwc1   $f3,       4(%[in_a])                                        \n\t"
72        "lwc1   $f1,       0(%[in_b])                                        \n\t"
73        "lwc1   $f4,       4(%[in_b])                                        \n\t"
74        "mul.s  $f2,       %[weight_coeff_a], $f0                            \n\t"
75        "mul.s  $f5,       %[weight_coeff_a], $f3                            \n\t"
76        "madd.s $f2,       $f2,               %[weight_coeff_b], $f1         \n\t"
77        "madd.s $f5,       $f5,               %[weight_coeff_b], $f4         \n\t"
78        "addiu  %[in_a],   8                                                 \n\t"
79        "addiu  %[in_b],   8                                                 \n\t"
80        "swc1   $f2,       0(%[out])                                         \n\t"
81        "swc1   $f5,       4(%[out])                                         \n\t"
82        "addiu  %[out],    8                                                 \n\t"
83        "bne   %[in_a],    %[a_end],          ff_weighted_vector_sumf_madd%= \n\t"
84
85        "ff_weighted_vector_sumf_end%=:                                      \n\t"
86
87        : [out] "+r" (out), [in_a] "+r" (in_a),   [in_b] "+r" (in_b)
88        : [weight_coeff_a] "f" (weight_coeff_a),
89          [weight_coeff_b] "f" (weight_coeff_b),
90          [length] "r" (length), [a_end]"r"(a_end)
91        : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "memory"
92    );
93}
94#endif /* HAVE_INLINE_ASM */
95
96void ff_acelp_vectors_init_mips(ACELPVContext *c)
97{
98#if HAVE_INLINE_ASM
99    c->weighted_vector_sumf = ff_weighted_vector_sumf_mips;
100#endif
101}
102