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72 lines
1.9 KiB
72 lines
1.9 KiB
/* |
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* Copyright (c) 2007 Luca Barbato <lu_zero@gentoo.org> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/** |
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* @file |
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* miscellaneous audio operations |
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*/ |
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#include "config.h" |
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#if HAVE_ALTIVEC_H |
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#include <altivec.h> |
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#endif |
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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/types_altivec.h" |
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#include "libavutil/ppc/util_altivec.h" |
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#include "libavcodec/audiodsp.h" |
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#if HAVE_ALTIVEC |
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static int32_t scalarproduct_int16_altivec(const int16_t *v1, const int16_t *v2, |
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int order) |
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{ |
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int i; |
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LOAD_ZERO; |
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register vec_s16 vec1; |
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register vec_s32 res = vec_splat_s32(0), t; |
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int32_t ires; |
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for (i = 0; i < order; i += 8) { |
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vec1 = vec_unaligned_load(v1); |
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t = vec_msum(vec1, vec_ld(0, v2), zero_s32v); |
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res = vec_sums(t, res); |
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v1 += 8; |
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v2 += 8; |
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} |
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res = vec_splat(res, 3); |
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vec_ste(res, 0, &ires); |
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return ires; |
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} |
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#endif /* HAVE_ALTIVEC */ |
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av_cold void ff_audiodsp_init_ppc(AudioDSPContext *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->scalarproduct_int16 = scalarproduct_int16_altivec; |
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#endif /* HAVE_ALTIVEC */ |
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}
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