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+/*
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+ * Copyright (C) 2012 Michael Niedermayer (michaelni@gmx.at)
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+ *
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+ * This file is part of libswresample
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+ *
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+ * libswresample 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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+ * libswresample 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 libswresample; 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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+#include "libswresample/swresample_internal.h"
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+
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+#define D(type, simd) \
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+mix_1_1_func_type ff_mix_1_1_a_## type ## _ ## simd;\
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+mix_2_1_func_type ff_mix_2_1_a_## type ## _ ## simd;
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+
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+D(float, sse)
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+D(float, avx)
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+D(int16, mmx)
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+D(int16, sse2)
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+
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+av_cold void swri_rematrix_init_x86(struct SwrContext *s){
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+ int mm_flags = av_get_cpu_flags();
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+ int nb_in = av_get_channel_layout_nb_channels(s->in_ch_layout);
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+ int nb_out = av_get_channel_layout_nb_channels(s->out_ch_layout);
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+ int num = nb_in * nb_out;
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+ int i,j;
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+
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+ s->mix_1_1_simd = NULL;
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+ s->mix_2_1_simd = NULL;
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+
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+ if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
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+ if(mm_flags & AV_CPU_FLAG_MMX) {
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+ s->mix_1_1_simd = ff_mix_1_1_a_int16_mmx;
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+ s->mix_2_1_simd = ff_mix_2_1_a_int16_mmx;
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+ }
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+ if(mm_flags & AV_CPU_FLAG_SSE2) {
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+ s->mix_1_1_simd = ff_mix_1_1_a_int16_sse2;
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+ s->mix_2_1_simd = ff_mix_2_1_a_int16_sse2;
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+ }
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+ s->native_simd_matrix = av_mallocz(2 * num * sizeof(int16_t));
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+ s->native_simd_one = av_mallocz(2 * sizeof(int16_t));
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+ for(i=0; i<nb_out; i++){
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+ int sh = 0;
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+ for(j=0; j<nb_in; j++)
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+ sh = FFMAX(sh, FFABS(((int*)s->native_matrix)[i * nb_in + j]));
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+ sh = FFMAX(av_log2(sh) - 14, 0);
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+ for(j=0; j<nb_in; j++) {
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+ ((int16_t*)s->native_simd_matrix)[2*(i * nb_in + j)+1] = 15 - sh;
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+ ((int16_t*)s->native_simd_matrix)[2*(i * nb_in + j)] =
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+ ((((int*)s->native_matrix)[i * nb_in + j]) + (1<<sh>>1)) >> sh;
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+ }
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+ }
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+ ((int16_t*)s->native_simd_one)[1] = 14;
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+ ((int16_t*)s->native_simd_one)[0] = 16384;
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+ } else if(s->midbuf.fmt == AV_SAMPLE_FMT_FLTP){
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+ if(mm_flags & AV_CPU_FLAG_SSE) {
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+ s->mix_1_1_simd = ff_mix_1_1_a_float_sse;
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+ s->mix_2_1_simd = ff_mix_2_1_a_float_sse;
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+ }
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+ if(HAVE_AVX_EXTERNAL && mm_flags & AV_CPU_FLAG_AVX) {
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+ s->mix_1_1_simd = ff_mix_1_1_a_float_avx;
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+ s->mix_2_1_simd = ff_mix_2_1_a_float_avx;
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+ }
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+ s->native_simd_matrix = av_mallocz(num * sizeof(float));
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+ memcpy(s->native_simd_matrix, s->native_matrix, num * sizeof(float));
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+ s->native_simd_one = av_mallocz(sizeof(float));
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+ memcpy(s->native_simd_one, s->native_one, sizeof(float));
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+ }
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+}
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