Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 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 | * Math operations optimized for MIPS |
||
| 32 | * |
||
| 33 | * This file is part of FFmpeg. |
||
| 34 | * |
||
| 35 | * FFmpeg is free software; you can redistribute it and/or |
||
| 36 | * modify it under the terms of the GNU Lesser General Public |
||
| 37 | * License as published by the Free Software Foundation; either |
||
| 38 | * version 2.1 of the License, or (at your option) any later version. |
||
| 39 | * |
||
| 40 | * FFmpeg is distributed in the hope that it will be useful, |
||
| 41 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 42 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
||
| 43 | * Lesser General Public License for more details. |
||
| 44 | * |
||
| 45 | * You should have received a copy of the GNU Lesser General Public |
||
| 46 | * License along with FFmpeg; if not, write to the Free Software |
||
| 47 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||
| 48 | */ |
||
| 49 | |||
| 50 | /** |
||
| 51 | * @file |
||
| 52 | * Reference: libavcodec/celp_math.c |
||
| 53 | */ |
||
| 54 | #include "config.h" |
||
| 55 | #include "libavcodec/celp_math.h" |
||
| 56 | |||
| 57 | #if HAVE_INLINE_ASM |
||
| 58 | static float ff_dot_productf_mips(const float* a, const float* b, |
||
| 59 | int length) |
||
| 60 | { |
||
| 61 | float sum; |
||
| 62 | const float* a_end = a + length; |
||
| 63 | |||
| 64 | __asm__ volatile ( |
||
| 65 | "mtc1 $zero, %[sum] \n\t" |
||
| 66 | "blez %[length], ff_dot_productf_end%= \n\t" |
||
| 67 | "ff_dot_productf_madd%=: \n\t" |
||
| 68 | "lwc1 $f2, 0(%[a]) \n\t" |
||
| 69 | "lwc1 $f1, 0(%[b]) \n\t" |
||
| 70 | "addiu %[a], %[a], 4 \n\t" |
||
| 71 | "addiu %[b], %[b], 4 \n\t" |
||
| 72 | "madd.s %[sum], %[sum], $f1, $f2 \n\t" |
||
| 73 | "bne %[a], %[a_end], ff_dot_productf_madd%= \n\t" |
||
| 74 | "ff_dot_productf_end%=: \n\t" |
||
| 75 | |||
| 76 | : [sum] "=&f" (sum), [a] "+r" (a), [b] "+r" (b) |
||
| 77 | : [a_end]"r"(a_end), [length] "r" (length) |
||
| 78 | : "$f1", "$f2", "memory" |
||
| 79 | ); |
||
| 80 | return sum; |
||
| 81 | } |
||
| 82 | #endif /* HAVE_INLINE_ASM */ |
||
| 83 | |||
| 84 | void ff_celp_math_init_mips(CELPMContext *c) |
||
| 85 | { |
||
| 86 | #if HAVE_INLINE_ASM |
||
| 87 | c->dot_productf = ff_dot_productf_mips; |
||
| 88 | #endif |
||
| 89 | } |