/* * Monkey's Audio lossless audio decoder * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org> * based upon libdemac from Dave Chapman. * * 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 "avcodec.h" #include "lossless_audiodsp.h" static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul) { int res = 0; do { res += *v1 * *v2++; *v1++ += mul * *v3++; res += *v1 * *v2++; *v1++ += mul * *v3++; } while (order-=2); return res; } static int32_t scalarproduct_and_madd_int32_c(int16_t *v1, const int32_t *v2, const int16_t *v3, int order, int mul) { int res = 0; do { res += *v1 * (uint32_t)*v2++; *v1++ += mul * *v3++; res += *v1 * (uint32_t)*v2++; *v1++ += mul * *v3++; } while (order-=2); return res; } av_cold void ff_llauddsp_init(LLAudDSPContext *c) { c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_c; c->scalarproduct_and_madd_int32 = scalarproduct_and_madd_int32_c; if (ARCH_ARM) ff_llauddsp_init_arm(c); if (ARCH_PPC) ff_llauddsp_init_ppc(c); if (ARCH_X86) ff_llauddsp_init_x86(c); }