blob: a1b17e4f0411ba7629eaa7b6e3dc2341db6f2474
| 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 | */ |
| 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 | |
| 69 | void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx); |
| 70 | |
| 71 | void ff_fmt_convert_init_aarch64(FmtConvertContext *c, AVCodecContext *avctx); |
| 72 | void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx); |
| 73 | void ff_fmt_convert_init_ppc(FmtConvertContext *c, AVCodecContext *avctx); |
| 74 | void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx); |
| 75 | void ff_fmt_convert_init_mips(FmtConvertContext *c); |
| 76 | |
| 77 | #endif /* AVCODEC_FMTCONVERT_H */ |
| 78 |