| 1 | /* |
| 2 | * Copyright (c) 2003-2004 Romain Dolbeau |
| 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 "libavutil/attributes.h" |
| 22 | #include "libavcodec/videodsp.h" |
| 23 | |
| 24 | static void prefetch_ppc(uint8_t *mem, ptrdiff_t stride, int h) |
| 25 | { |
| 26 | register const uint8_t *p = mem; |
| 27 | do { |
| 28 | __asm__ volatile ("dcbt 0,%0" : : "r" (p)); |
| 29 | p += stride; |
| 30 | } while(--h); |
| 31 | } |
| 32 | |
| 33 | av_cold void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc) |
| 34 | { |
| 35 | ctx->prefetch = prefetch_ppc; |
| 36 | } |