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fmtconvert.h
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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 
28 typedef 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  */
64  float *dst, const int32_t *src,
65  const float *mul, int len);
66 
68 
70 
76 
77 #endif /* AVCODEC_FMTCONVERT_H */
void(* int32_to_float_fmul_array8)(struct FmtConvertContext *c, float *dst, const int32_t *src, const float *mul, int len)
Convert an array of int32_t to float and multiply by a float value from another array, stepping along the float array once for each 8 integers.
Definition: fmtconvert.h:63
void ff_fmt_convert_init_ppc(FmtConvertContext *c, AVCodecContext *avctx)
void ff_fmt_convert_init_aarch64(FmtConvertContext *c, AVCodecContext *avctx)
void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx)
Definition: fmtconvert.c:52
void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx)
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
int32_t
void(* int32_to_float_fmul_scalar)(float *dst, const int32_t *src, float mul, int len)
Convert an array of int32_t to float and multiply by a float value.
Definition: fmtconvert.h:38
#define src
Definition: vp9dsp.c:530
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1659
void(* int32_to_float)(float *dst, const int32_t *src, intptr_t len)
Convert an array of int32_t to float.
Definition: fmtconvert.h:49
void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
static double c[64]
int len
void ff_fmt_convert_init_mips(FmtConvertContext *c)