repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2006 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 | #include "libavutil/attributes.h" | |
| 26 | #include "libavutil/cpu.h" | |
| 27 | #include "libavutil/ppc/cpu.h" | |
| 28 | #include "libavcodec/vorbisdsp.h" | |
| 29 | ||
| 30 | #if HAVE_ALTIVEC | |
| 31 | static void vorbis_inverse_coupling_altivec(float *mag, float *ang, | |
| 32 | intptr_t blocksize) | |
| 33 | { | |
| 34 | int i; | |
| 35 | vector float m, a; | |
| 36 | vector bool int t0, t1; | |
| 37 | const vector unsigned int v_31 = //XXX | |
| 38 | vec_add(vec_add(vec_splat_u32(15),vec_splat_u32(15)),vec_splat_u32(1)); | |
| 39 | for (i = 0; i < blocksize; i += 4) { | |
| 40 | m = vec_ld(0, mag+i); | |
| 41 | a = vec_ld(0, ang+i); | |
| 42 | t0 = vec_cmple(m, (vector float)vec_splat_u32(0)); | |
| 43 | t1 = vec_cmple(a, (vector float)vec_splat_u32(0)); | |
| 44 | a = vec_xor(a, (vector float) vec_sl((vector unsigned int)t0, v_31)); | |
| 45 | t0 = (vector bool int)vec_and(a, t1); | |
| 46 | t1 = (vector bool int)vec_andc(a, t1); | |
| 47 | a = vec_sub(m, (vector float)t1); | |
| 48 | m = vec_add(m, (vector float)t0); | |
| 49 | vec_stl(a, 0, ang+i); | |
| 50 | vec_stl(m, 0, mag+i); | |
| 51 | } | |
| 52 | } | |
| 53 | #endif /* HAVE_ALTIVEC */ | |
| 54 | ||
| 55 | av_cold void ff_vorbisdsp_init_ppc(VorbisDSPContext *c) | |
| 56 | { | |
| 57 | #if HAVE_ALTIVEC | |
| 58 | if (!PPC_ALTIVEC(av_get_cpu_flags())) | |
| 59 | return; | |
| 60 | ||
| 61 | c->vorbis_inverse_coupling = vorbis_inverse_coupling_altivec; | |
| 62 | #endif /* HAVE_ALTIVEC */ | |
| 63 | } |