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Diffstat (limited to 'libavcodec/ppc/videodsp.c')
-rw-r--r-- | libavcodec/ppc/videodsp.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libavcodec/ppc/videodsp.c b/libavcodec/ppc/videodsp.c new file mode 100644 index 0000000000..b9e003b487 --- /dev/null +++ b/libavcodec/ppc/videodsp.c @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2003-2004 Romain Dolbeau + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/attributes.h" +#include "libavcodec/videodsp.h" + +static void prefetch_ppc(uint8_t *mem, ptrdiff_t stride, int h) +{ + register const uint8_t *p = mem; + do { + __asm__ volatile ("dcbt 0,%0" : : "r" (p)); + p += stride; + } while(--h); +} + +av_cold void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc) +{ + ctx->prefetch = prefetch_ppc; +} |