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59 lines
1.8 KiB
59 lines
1.8 KiB
/* |
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* Copyright (c) 2002 Brian Foley |
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* Copyright (c) 2002 Dieter Shirley |
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* Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "config.h" |
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#include "libavutil/attributes.h" |
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#include "libavutil/cpu.h" |
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#include "libavutil/ppc/cpu.h" |
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#include "libavutil/ppc/util_altivec.h" |
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#include "libavcodec/huffyuvdsp.h" |
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#if HAVE_ALTIVEC |
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static void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w) |
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{ |
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register int i; |
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register vector unsigned char vdst, vsrc; |
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/* dst and src are 16 bytes-aligned (guaranteed). */ |
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for (i = 0; i + 15 < w; i += 16) { |
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vdst = vec_ld(i, (unsigned char *) dst); |
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vsrc = vec_ld(i, (unsigned char *) src); |
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vdst = vec_add(vsrc, vdst); |
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vec_st(vdst, i, (unsigned char *) dst); |
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} |
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/* If w is not a multiple of 16. */ |
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for (; i < w; i++) |
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dst[i] = src[i]; |
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} |
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#endif /* HAVE_ALTIVEC */ |
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av_cold void ff_huffyuvdsp_init_ppc(HuffYUVDSPContext *c) |
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{ |
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#if HAVE_ALTIVEC |
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if (!PPC_ALTIVEC(av_get_cpu_flags())) |
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return; |
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c->add_bytes = add_bytes_altivec; |
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#endif /* HAVE_ALTIVEC */ |
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}
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