mirror of
https://github.com/librempeg/librempeg
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68 lines
2.8 KiB
C
68 lines
2.8 KiB
C
/*
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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 <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/arm/cpu.h"
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#include "libavutil/samplefmt.h"
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#include "libswresample/swresample_internal.h"
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#include "libswresample/audioconvert.h"
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void swri_oldapi_conv_flt_to_s16_neon(int16_t *dst, const float *src, int len);
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void swri_oldapi_conv_fltp_to_s16_2ch_neon(int16_t *dst, float *const *src, int len, int channels);
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void swri_oldapi_conv_fltp_to_s16_nch_neon(int16_t *dst, float *const *src, int len, int channels);
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static void conv_flt_to_s16_neon(uint8_t **dst, const uint8_t **src, int len){
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swri_oldapi_conv_flt_to_s16_neon((int16_t*)*dst, (const float*)*src, len);
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}
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static void conv_fltp_to_s16_2ch_neon(uint8_t **dst, const uint8_t **src, int len){
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swri_oldapi_conv_fltp_to_s16_2ch_neon((int16_t*)*dst, (float *const*)src, len, 2);
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}
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static void conv_fltp_to_s16_nch_neon(uint8_t **dst, const uint8_t **src, int len){
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int channels;
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for(channels=3; channels<SWR_CH_MAX && src[channels]; channels++)
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;
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swri_oldapi_conv_fltp_to_s16_nch_neon((int16_t*)*dst, (float *const*)src, len, channels);
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}
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av_cold void swri_audio_convert_init_arm(struct AudioConvert *ac,
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enum AVSampleFormat out_fmt,
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enum AVSampleFormat in_fmt,
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int channels)
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{
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int cpu_flags = av_get_cpu_flags();
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ac->simd_f= NULL;
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if (have_neon(cpu_flags)) {
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if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLT || out_fmt == AV_SAMPLE_FMT_S16P && in_fmt == AV_SAMPLE_FMT_FLTP)
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ac->simd_f = conv_flt_to_s16_neon;
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if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLTP && channels == 2)
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ac->simd_f = conv_fltp_to_s16_2ch_neon;
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if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLTP && channels > 2)
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ac->simd_f = conv_fltp_to_s16_nch_neon;
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if(ac->simd_f)
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ac->in_simd_align_mask = ac->out_simd_align_mask = 15;
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}
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}
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