1 /*
2 * This file is part of libswresample.
3 *
4 * libswresample is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * libswresample is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with libswresample; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <stdint.h>
20
21 #include "config.h"
22 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/arm/cpu.h"
25 #include "libavutil/samplefmt.h"
26 #include "libswresample/swresample_internal.h"
27 #include "libswresample/audioconvert.h"
28
29 void swri_oldapi_conv_flt_to_s16_neon(int16_t *dst, const float *src, int len);
30 void swri_oldapi_conv_fltp_to_s16_2ch_neon(int16_t *dst, float *const *src, int len, int channels);
31 void swri_oldapi_conv_fltp_to_s16_nch_neon(int16_t *dst, float *const *src, int len, int channels);
32
conv_flt_to_s16_neon(uint8_t ** dst,const uint8_t ** src,int len)33 static void conv_flt_to_s16_neon(uint8_t **dst, const uint8_t **src, int len){
34 swri_oldapi_conv_flt_to_s16_neon((int16_t*)*dst, (const float*)*src, len);
35 }
36
conv_fltp_to_s16_2ch_neon(uint8_t ** dst,const uint8_t ** src,int len)37 static void conv_fltp_to_s16_2ch_neon(uint8_t **dst, const uint8_t **src, int len){
38 swri_oldapi_conv_fltp_to_s16_2ch_neon((int16_t*)*dst, (float *const*)src, len, 2);
39 }
40
conv_fltp_to_s16_nch_neon(uint8_t ** dst,const uint8_t ** src,int len)41 static void conv_fltp_to_s16_nch_neon(uint8_t **dst, const uint8_t **src, int len){
42 int channels;
43 for(channels=3; channels<SWR_CH_MAX && src[channels]; channels++)
44 ;
45 swri_oldapi_conv_fltp_to_s16_nch_neon((int16_t*)*dst, (float *const*)src, len, channels);
46 }
47
swri_audio_convert_init_arm(struct AudioConvert * ac,enum AVSampleFormat out_fmt,enum AVSampleFormat in_fmt,int channels)48 av_cold void swri_audio_convert_init_arm(struct AudioConvert *ac,
49 enum AVSampleFormat out_fmt,
50 enum AVSampleFormat in_fmt,
51 int channels)
52 {
53 int cpu_flags = av_get_cpu_flags();
54
55 ac->simd_f= NULL;
56
57 if (have_neon(cpu_flags)) {
58 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)
59 ac->simd_f = conv_flt_to_s16_neon;
60 if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLTP && channels == 2)
61 ac->simd_f = conv_fltp_to_s16_2ch_neon;
62 if(out_fmt == AV_SAMPLE_FMT_S16 && in_fmt == AV_SAMPLE_FMT_FLTP && channels > 2)
63 ac->simd_f = conv_fltp_to_s16_nch_neon;
64 if(ac->simd_f)
65 ac->in_simd_align_mask = ac->out_simd_align_mask = 15;
66 }
67 }
68