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2ba45a60 DM |
1 | /* |
2 | * ARM optimized Format Conversion Utils | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
6 | * FFmpeg is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * FFmpeg is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with FFmpeg; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <stdint.h> | |
22 | ||
23 | #include "libavutil/attributes.h" | |
24 | #include "libavutil/arm/cpu.h" | |
25 | #include "libavcodec/avcodec.h" | |
26 | #include "libavcodec/fmtconvert.h" | |
27 | ||
28 | void ff_int32_to_float_fmul_scalar_neon(float *dst, const int32_t *src, | |
29 | float mul, int len); | |
30 | ||
31 | void ff_int32_to_float_fmul_scalar_vfp(float *dst, const int32_t *src, | |
32 | float mul, int len); | |
33 | void ff_int32_to_float_fmul_array8_vfp(FmtConvertContext *c, float *dst, | |
34 | const int32_t *src, const float *mul, | |
35 | int len); | |
36 | ||
37 | void ff_float_to_int16_neon(int16_t *dst, const float *src, long len); | |
38 | void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int); | |
39 | ||
40 | void ff_float_to_int16_vfp(int16_t *dst, const float *src, long len); | |
41 | ||
42 | av_cold void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx) | |
43 | { | |
44 | int cpu_flags = av_get_cpu_flags(); | |
45 | ||
46 | if (have_vfp(cpu_flags)) { | |
47 | if (!have_vfpv3(cpu_flags)) { | |
48 | c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_vfp; | |
49 | c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_vfp; | |
50 | } | |
51 | ||
52 | if (have_armv6(cpu_flags)) { | |
53 | c->float_to_int16 = ff_float_to_int16_vfp; | |
54 | } | |
55 | } | |
56 | ||
57 | if (have_neon(cpu_flags)) { | |
58 | c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_neon; | |
59 | ||
60 | if (!(avctx->flags & CODEC_FLAG_BITEXACT)) { | |
61 | c->float_to_int16 = ff_float_to_int16_neon; | |
62 | c->float_to_int16_interleave = ff_float_to_int16_interleave_neon; | |
63 | } | |
64 | } | |
65 | } |