/* * Copyright (c) 2007 Luca Barbato <lu_zero@gentoo.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 "libavcodec/lossless_audiodsp.h" #if HAVE_BIGENDIAN #define GET_T(tt0,tt1,src,a,b){ \ a = vec_ld(16, src); \ tt0 = vec_perm(b, a, align); \ b = vec_ld(32, src); \ tt1 = vec_perm(a, b, align); \ } #else #define GET_T(tt0,tt1,src,a,b){ \ tt0 = vec_vsx_ld(0, src); \ tt1 = vec_vsx_ld(16, src); \ } #endif #if HAVE_ALTIVEC static int32_t scalarproduct_and_madd_int16_altivec(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul) { LOAD_ZERO; vec_s16 *pv1 = (vec_s16 *) v1; register vec_s16 muls = { mul, mul, mul, mul, mul, mul, mul, mul }; register vec_s16 t0, t1, i0, i1, i4, i2, i3; register vec_s32 res = zero_s32v; #if HAVE_BIGENDIAN register vec_u8 align = vec_lvsl(0, v2); i2 = vec_ld(0, v2); i3 = vec_ld(0, v3); #endif int32_t ires; order >>= 4; do { GET_T(t0,t1,v2,i1,i2); i0 = pv1[0]; i1 = pv1[1]; res = vec_msum(t0, i0, res); res = vec_msum(t1, i1, res); GET_T(t0,t1,v3,i4,i3); pv1[0] = vec_mladd(t0, muls, i0); pv1[1] = vec_mladd(t1, muls, i1); pv1 += 2; v2 += 16; v3 += 16; } while (--order); res = vec_splat(vec_sums(res, zero_s32v), 3); vec_ste(res, 0, &ires); return ires; } #endif /* HAVE_ALTIVEC */ av_cold void ff_llauddsp_init_ppc(LLAudDSPContext *c) { #if HAVE_ALTIVEC if (!PPC_ALTIVEC(av_get_cpu_flags())) return; c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_altivec; #endif /* HAVE_ALTIVEC */ }