1/*
2 * Format Conversion Utils
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#ifndef AVCODEC_FMTCONVERT_H
24#define AVCODEC_FMTCONVERT_H
25
26#include "avcodec.h"
27
28typedef struct FmtConvertContext {
29    /**
30     * Convert an array of int32_t to float and multiply by a float value.
31     * @param dst destination array of float.
32     *            constraints: 16-byte aligned
33     * @param src source array of int32_t.
34     *            constraints: 16-byte aligned
35     * @param len number of elements to convert.
36     *            constraints: multiple of 8
37     */
38    void (*int32_to_float_fmul_scalar)(float *dst, const int32_t *src,
39                                       float mul, int len);
40    /**
41     * Convert an array of int32_t to float.
42     * @param dst destination array of float.
43     *            constraints: 32-byte aligned
44     * @param src source array of int32_t.
45     *            constraints: 32-byte aligned
46     * @param len number of elements to convert.
47     *            constraints: multiple of 8
48     */
49    void (*int32_to_float)(float *dst, const int32_t *src, intptr_t len);
50
51    /**
52     * Convert an array of int32_t to float and multiply by a float value from another array,
53     * stepping along the float array once for each 8 integers.
54     * @param c   pointer to FmtConvertContext.
55     * @param dst destination array of float.
56     *            constraints: 16-byte aligned
57     * @param src source array of int32_t.
58     *            constraints: 16-byte aligned
59     * @param mul source array of float multipliers.
60     * @param len number of elements to convert.
61     *            constraints: multiple of 8
62     */
63    void (*int32_to_float_fmul_array8)(struct FmtConvertContext *c,
64                                       float *dst, const int32_t *src,
65                                       const float *mul, int len);
66
67} FmtConvertContext;
68
69void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx);
70
71void ff_fmt_convert_init_aarch64(FmtConvertContext *c, AVCodecContext *avctx);
72void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx);
73void ff_fmt_convert_init_ppc(FmtConvertContext *c, AVCodecContext *avctx);
74void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx);
75void ff_fmt_convert_init_mips(FmtConvertContext *c);
76
77#endif /* AVCODEC_FMTCONVERT_H */
78