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
28void ff_int32_to_float_fmul_scalar_neon(float *dst, const int32_t *src,
29                                        float mul, int len);
30
31void ff_int32_to_float_fmul_scalar_vfp(float *dst, const int32_t *src,
32                                       float mul, int len);
33void ff_int32_to_float_fmul_array8_vfp(FmtConvertContext *c, float *dst,
34                                       const int32_t *src, const float *mul,
35                                       int len);
36
37void ff_float_to_int16_neon(int16_t *dst, const float *src, long len);
38void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int);
39
40void ff_float_to_int16_vfp(int16_t *dst, const float *src, long len);
41
42av_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}
66