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 | #include "config.h" | |
| 22 | #if HAVE_ALTIVEC_H | |
| 23 | #include <altivec.h> | |
| 24 | #endif | |
| 25 | ||
| 26 | #include "libavutil/attributes.h" | |
| 27 | #include "libavutil/cpu.h" | |
| 28 | #include "libavutil/ppc/cpu.h" | |
| 29 | #include "libavutil/ppc/types_altivec.h" | |
| 30 | #include "libavcodec/lossless_audiodsp.h" | |
| 31 | ||
| 32 | #if HAVE_ALTIVEC | |
| 33 | static int32_t scalarproduct_and_madd_int16_altivec(int16_t *v1, | |
| 34 | const int16_t *v2, | |
| 35 | const int16_t *v3, | |
| 36 | int order, int mul) | |
| 37 | { | |
| 38 | LOAD_ZERO; | |
| 39 | vec_s16 *pv1 = (vec_s16 *) v1; | |
| 40 | register vec_s16 muls = { mul, mul, mul, mul, mul, mul, mul, mul }; | |
| 41 | register vec_s16 t0, t1, i0, i1, i4; | |
| 42 | register vec_s16 i2 = vec_ld(0, v2), i3 = vec_ld(0, v3); | |
| 43 | register vec_s32 res = zero_s32v; | |
| 44 | register vec_u8 align = vec_lvsl(0, v2); | |
| 45 | int32_t ires; | |
| 46 | ||
| 47 | order >>= 4; | |
| 48 | do { | |
| 49 | i1 = vec_ld(16, v2); | |
| 50 | t0 = vec_perm(i2, i1, align); | |
| 51 | i2 = vec_ld(32, v2); | |
| 52 | t1 = vec_perm(i1, i2, align); | |
| 53 | i0 = pv1[0]; | |
| 54 | i1 = pv1[1]; | |
| 55 | res = vec_msum(t0, i0, res); | |
| 56 | res = vec_msum(t1, i1, res); | |
| 57 | i4 = vec_ld(16, v3); | |
| 58 | t0 = vec_perm(i3, i4, align); | |
| 59 | i3 = vec_ld(32, v3); | |
| 60 | t1 = vec_perm(i4, i3, align); | |
| 61 | pv1[0] = vec_mladd(t0, muls, i0); | |
| 62 | pv1[1] = vec_mladd(t1, muls, i1); | |
| 63 | pv1 += 2; | |
| 64 | v2 += 16; | |
| 65 | v3 += 16; | |
| 66 | } while (--order); | |
| 67 | res = vec_splat(vec_sums(res, zero_s32v), 3); | |
| 68 | vec_ste(res, 0, &ires); | |
| 69 | ||
| 70 | return ires; | |
| 71 | } | |
| 72 | #endif /* HAVE_ALTIVEC */ | |
| 73 | ||
| 74 | av_cold void ff_llauddsp_init_ppc(LLAudDSPContext *c) | |
| 75 | { | |
| 76 | #if HAVE_ALTIVEC | |
| 77 | if (!PPC_ALTIVEC(av_get_cpu_flags())) | |
| 78 | return; | |
| 79 | ||
| 80 | c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_altivec; | |
| 81 | #endif /* HAVE_ALTIVEC */ | |
| 82 | } |