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 <stdint.h> | |
| 22 | ||
| 23 | #include "config.h" | |
| 24 | #if HAVE_ALTIVEC_H | |
| 25 | #include <altivec.h> | |
| 26 | #endif | |
| 27 | ||
| 28 | #include "libavutil/attributes.h" | |
| 29 | #include "libavutil/cpu.h" | |
| 30 | #include "libavutil/ppc/cpu.h" | |
| 31 | #include "libavutil/ppc/types_altivec.h" | |
| 32 | #include "libavutil/ppc/util_altivec.h" | |
| 33 | #include "libavcodec/svq1enc.h" | |
| 34 | ||
| 35 | #if HAVE_ALTIVEC | |
| 36 | static int ssd_int8_vs_int16_altivec(const int8_t *pix1, const int16_t *pix2, | |
| 37 | int size) | |
| 38 | { | |
| 39 | int i, size16 = size >> 4; | |
| 40 | vector signed char vpix1; | |
| 41 | vector signed short vpix2, vdiff, vpix1l, vpix1h; | |
| 42 | union { | |
| 43 | vector signed int vscore; | |
| 44 | int32_t score[4]; | |
| 45 | } u = { .vscore = vec_splat_s32(0) }; | |
| 46 | ||
| 47 | while (size16) { | |
| 48 | // score += (pix1[i] - pix2[i]) * (pix1[i] - pix2[i]); | |
| 49 | // load pix1 and the first batch of pix2 | |
| 50 | ||
| 51 | vpix1 = vec_unaligned_load(pix1); | |
| 52 | vpix2 = vec_unaligned_load(pix2); | |
| 53 | pix2 += 8; | |
| 54 | // unpack | |
| 55 | vpix1h = vec_unpackh(vpix1); | |
| 56 | vdiff = vec_sub(vpix1h, vpix2); | |
| 57 | vpix1l = vec_unpackl(vpix1); | |
| 58 | // load another batch from pix2 | |
| 59 | vpix2 = vec_unaligned_load(pix2); | |
| 60 | u.vscore = vec_msum(vdiff, vdiff, u.vscore); | |
| 61 | vdiff = vec_sub(vpix1l, vpix2); | |
| 62 | u.vscore = vec_msum(vdiff, vdiff, u.vscore); | |
| 63 | pix1 += 16; | |
| 64 | pix2 += 8; | |
| 65 | size16--; | |
| 66 | } | |
| 67 | u.vscore = vec_sums(u.vscore, vec_splat_s32(0)); | |
| 68 | ||
| 69 | size %= 16; | |
| 70 | for (i = 0; i < size; i++) | |
| 71 | u.score[3] += (pix1[i] - pix2[i]) * (pix1[i] - pix2[i]); | |
| 72 | ||
| 73 | return u.score[3]; | |
| 74 | } | |
| 75 | #endif /* HAVE_ALTIVEC */ | |
| 76 | ||
| 77 | av_cold void ff_svq1enc_init_ppc(SVQ1EncContext *c) | |
| 78 | { | |
| 79 | #if HAVE_ALTIVEC | |
| 80 | if (!PPC_ALTIVEC(av_get_cpu_flags())) | |
| 81 | return; | |
| 82 | ||
| 83 | c->ssd_int8_vs_int16 = ssd_int8_vs_int16_altivec; | |
| 84 | #endif /* HAVE_ALTIVEC */ | |
| 85 | } |