| 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 |
| 59 | static 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 | |
| 96 | void 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 | } |