| /* |
| * This file is part of libswresample. |
| * |
| * libswresample 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. |
| * |
| * libswresample 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 libswresample; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdint.h> |
| |
| #include "config.h" |
| #include "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/arm/cpu.h" |
| #include "libavutil/samplefmt.h" |
| #include "libswresample/swresample_internal.h" |
| #include "libswresample/audioconvert.h" |
| |
| void swri_oldapi_conv_flt_to_s16_neon(int16_t *dst, const float *src, int len); |
| void swri_oldapi_conv_fltp_to_s16_2ch_neon(int16_t *dst, float *const *src, int len, int channels); |
| void swri_oldapi_conv_fltp_to_s16_nch_neon(int16_t *dst, float *const *src, int len, int channels); |
| |
| static void conv_flt_to_s16_neon(uint8_t **dst, const uint8_t **src, int len){ |
| swri_oldapi_conv_flt_to_s16_neon((int16_t*)*dst, (const float*)*src, len); |
| } |
| |
| static void conv_fltp_to_s16_2ch_neon(uint8_t **dst, const uint8_t **src, int len){ |
| swri_oldapi_conv_fltp_to_s16_2ch_neon((int16_t*)*dst, (float *const*)src, len, 2); |
| } |
| |
| static void conv_fltp_to_s16_nch_neon(uint8_t **dst, const uint8_t **src, int len){ |
| int channels; |
| for(channels=3; channels<SWR_CH_MAX && src[channels]; channels++) |
| ; |
| swri_oldapi_conv_fltp_to_s16_nch_neon((int16_t*)*dst, (float *const*)src, len, channels); |
| } |
| |
| av_cold void swri_audio_convert_init_arm(struct AudioConvert *ac, |
| enum AVSampleFormat out_fmt, |
| enum AVSampleFormat in_fmt, |
| int channels) |
| { |
| int cpu_flags = av_get_cpu_flags(); |
| |
| ac->simd_f= NULL; |
| |
| if (have_neon(cpu_flags)) { |
| 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) |
| ac->simd_f = conv_flt_to_s16_neon; |
| if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLTP && channels == 2) |
| ac->simd_f = conv_fltp_to_s16_2ch_neon; |
| if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLTP && channels > 2) |
| ac->simd_f = conv_fltp_to_s16_nch_neon; |
| if(ac->simd_f) |
| ac->in_simd_align_mask = ac->out_simd_align_mask = 15; |
| } |
| } |