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https://github.com/FFmpeg/FFmpeg.git
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223c70cf1d
Replaces the "used channel count" option, which is now deprecated. Signed-off-by: James Almer <jamrial@gmail.com>
87 lines
3.2 KiB
C
87 lines
3.2 KiB
C
/*
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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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#include "libavutil/attributes.h"
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#include "libavutil/x86/cpu.h"
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#include "libswresample/swresample_internal.h"
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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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D(float, sse)
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D(float, avx)
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D(int16, sse2)
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av_cold int swri_rematrix_init_x86(struct SwrContext *s){
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#if HAVE_X86ASM
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int mm_flags = av_get_cpu_flags();
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int nb_in = s->used_ch_layout.nb_channels;
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int nb_out = s->out.ch_count;
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int num = nb_in * nb_out;
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int i,j;
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s->mix_1_1_simd = NULL;
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s->mix_2_1_simd = NULL;
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if (s->midbuf.fmt == AV_SAMPLE_FMT_S16P){
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if(EXTERNAL_SSE2(mm_flags)) {
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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_calloc(num, 2 * sizeof(int16_t));
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s->native_simd_one = av_mallocz(2 * sizeof(int16_t));
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if (!s->native_simd_matrix || !s->native_simd_one)
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return AVERROR(ENOMEM);
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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(EXTERNAL_SSE(mm_flags)) {
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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(EXTERNAL_AVX_FAST(mm_flags)) {
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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_calloc(num, sizeof(float));
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s->native_simd_one = av_mallocz(sizeof(float));
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if (!s->native_simd_matrix || !s->native_simd_one)
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return AVERROR(ENOMEM);
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memcpy(s->native_simd_matrix, s->native_matrix, num * sizeof(float));
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memcpy(s->native_simd_one, s->native_one, sizeof(float));
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}
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#endif
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return 0;
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}
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