| /* |
| * 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" |
| |
| #include "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/ppc/cpu.h" |
| #include "libavutil/ppc/util_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 */ |
| } |