1 /*

2 * Copyright (c) 2002 Brian Foley

3 * Copyright (c) 2002 Dieter Shirley

4 * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>

5 *

6 * This file is part of FFmpeg.

7 *

8 * FFmpeg is free software; you can redistribute it and/or

9 * modify it under the terms of the GNU Lesser General Public

10 * License as published by the Free Software Foundation; either

11 * version 2.1 of the License, or (at your option) any later version.

12 *

13 * FFmpeg is distributed in the hope that it will be useful,

14 * but WITHOUT ANY WARRANTY; without even the implied warranty of

15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

16 * Lesser General Public License for more details.

17 *

18 * You should have received a copy of the GNU Lesser General Public

19 * License along with FFmpeg; if not, write to the Free Software

20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

21 */

22

23 #include "libavcodec/dsputil.h"

24 #include "dsputil_ppc.h"

25 #include "dsputil_altivec.h"

26

27 static void prefetch_ppc(void *mem, int stride, int h)

28 {

29 register const uint8_t *p = mem;

30 do {

31 __asm__ volatile ("dcbt 0,%0" : : "r" (p));

32 p+= stride;

33 } while(--h);

34 }

35

36 void dsputil_init_ppc(DSPContext* c)

37 {

38 c->prefetch = prefetch_ppc;

39

40 #if HAVE_ALTIVEC

41 dsputil_h264_init_ppc(c);

42 dsputil_init_altivec(c);

43

44 c->idct_put = idct_put_altivec;

45 c->idct_add = idct_add_altivec;

46

47 #endif /* HAVE_ALTIVEC */

48 }