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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 | ||
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 | ||
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 | ||
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 | ||
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 | } |