| /* |
| * Copyright (c) 2002 Brian Foley |
| * Copyright (c) 2002 Dieter Shirley |
| * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| #if HAVE_ALTIVEC_H |
| #include <altivec.h> |
| #endif |
| |
| #include "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/ppc/cpu.h" |
| #include "libavutil/ppc/types_altivec.h" |
| #include "libavutil/ppc/util_altivec.h" |
| #include "libavcodec/huffyuvdsp.h" |
| |
| #if HAVE_ALTIVEC |
| static void add_bytes_altivec(uint8_t *dst, uint8_t *src, intptr_t w) |
| { |
| register int i; |
| register vector unsigned char vdst, vsrc; |
| |
| /* dst and src are 16 bytes-aligned (guaranteed). */ |
| for (i = 0; i + 15 < w; i += 16) { |
| vdst = vec_ld(i, (unsigned char *) dst); |
| vsrc = vec_ld(i, (unsigned char *) src); |
| vdst = vec_add(vsrc, vdst); |
| vec_st(vdst, i, (unsigned char *) dst); |
| } |
| /* If w is not a multiple of 16. */ |
| for (; i < w; i++) |
| dst[i] = src[i]; |
| } |
| #endif /* HAVE_ALTIVEC */ |
| |
| av_cold void ff_huffyuvdsp_init_ppc(HuffYUVDSPContext *c) |
| { |
| #if HAVE_ALTIVEC |
| if (!PPC_ALTIVEC(av_get_cpu_flags())) |
| return; |
| |
| c->add_bytes = add_bytes_altivec; |
| #endif /* HAVE_ALTIVEC */ |
| } |