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1 /*
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2 * Copyright (c) 2002 Brian Foley
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3 * Copyright (c) 2002 Dieter Shirley
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4 * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
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5 *
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6 * This file is part of FFmpeg.
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7 *
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8 * FFmpeg is free software; you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public
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10 * License as published by the Free Software Foundation; either
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11 * version 2.1 of the License, or (at your option) any later version.
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12 *
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13 * FFmpeg is distributed in the hope that it will be useful,
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14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with FFmpeg; if not, write to the Free Software
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20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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21 */
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22
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23 #include "libavcodec/dsputil.h"
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24 #include "dsputil_ppc.h"
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25 #include "dsputil_altivec.h"
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26
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27 static void prefetch_ppc(void *mem, int stride, int h)
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28 {
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29 register const uint8_t *p = mem;
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30 do {
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31 __asm__ volatile ("dcbt 0,%0" : : "r" (p));
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32 p+= stride;
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33 } while(--h);
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34 }
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35
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36 void dsputil_init_ppc(DSPContext* c)
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37 {
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38 c->prefetch = prefetch_ppc;
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39
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40 #if HAVE_ALTIVEC
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41 dsputil_h264_init_ppc(c);
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42 dsputil_init_altivec(c);
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43
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44 c->idct_put = idct_put_altivec;
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45 c->idct_add = idct_add_altivec;
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46
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47 #endif /* HAVE_ALTIVEC */
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48 }
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