repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2007 Luca Barbato <lu_zero@gentoo.org> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | /** | |
| 22 | * @file | |
| 23 | * miscellaneous audio operations | |
| 24 | */ | |
| 25 | ||
| 26 | #include "config.h" | |
| 27 | #if HAVE_ALTIVEC_H | |
| 28 | #include <altivec.h> | |
| 29 | #endif | |
| 30 | ||
| 31 | #include "libavutil/attributes.h" | |
| 32 | #include "libavutil/cpu.h" | |
| 33 | #include "libavutil/ppc/cpu.h" | |
| 34 | #include "libavutil/ppc/types_altivec.h" | |
| 35 | #include "libavutil/ppc/util_altivec.h" | |
| 36 | #include "libavcodec/audiodsp.h" | |
| 37 | ||
| 38 | #if HAVE_ALTIVEC | |
| 39 | ||
| 40 | static int32_t scalarproduct_int16_altivec(const int16_t *v1, const int16_t *v2, | |
| 41 | int order) | |
| 42 | { | |
| 43 | int i; | |
| 44 | LOAD_ZERO; | |
| 45 | register vec_s16 vec1; | |
| 46 | register vec_s32 res = vec_splat_s32(0), t; | |
| 47 | int32_t ires; | |
| 48 | ||
| 49 | for (i = 0; i < order; i += 8) { | |
| 50 | vec1 = vec_unaligned_load(v1); | |
| 51 | t = vec_msum(vec1, vec_ld(0, v2), zero_s32v); | |
| 52 | res = vec_sums(t, res); | |
| 53 | v1 += 8; | |
| 54 | v2 += 8; | |
| 55 | } | |
| 56 | res = vec_splat(res, 3); | |
| 57 | vec_ste(res, 0, &ires); | |
| 58 | ||
| 59 | return ires; | |
| 60 | } | |
| 61 | ||
| 62 | #endif /* HAVE_ALTIVEC */ | |
| 63 | ||
| 64 | av_cold void ff_audiodsp_init_ppc(AudioDSPContext *c) | |
| 65 | { | |
| 66 | #if HAVE_ALTIVEC | |
| 67 | if (!PPC_ALTIVEC(av_get_cpu_flags())) | |
| 68 | return; | |
| 69 | ||
| 70 | c->scalarproduct_int16 = scalarproduct_int16_altivec; | |
| 71 | #endif /* HAVE_ALTIVEC */ | |
| 72 | } |