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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Format Conversion Utils |
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| 3 | * Copyright (c) 2000, 2001 Fabrice Bellard |
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| 4 | * Copyright (c) 2002-2004 Michael Niedermayer |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | #ifndef AVCODEC_FMTCONVERT_H |
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| 24 | #define AVCODEC_FMTCONVERT_H |
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| 25 | |||
| 26 | #include "avcodec.h" |
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| 27 | |||
| 28 | typedef struct FmtConvertContext { |
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| 29 | /** |
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| 30 | * Convert an array of int32_t to float and multiply by a float value. |
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| 31 | * @param dst destination array of float. |
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| 32 | * constraints: 16-byte aligned |
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| 33 | * @param src source array of int32_t. |
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| 34 | * constraints: 16-byte aligned |
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| 35 | * @param len number of elements to convert. |
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| 36 | * constraints: multiple of 8 |
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| 37 | */ |
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| 38 | void (*int32_to_float_fmul_scalar)(float *dst, const int32_t *src, |
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| 39 | float mul, int len); |
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| 40 | |||
| 41 | /** |
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| 42 | * Convert an array of int32_t to float and multiply by a float value from another array, |
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| 43 | * stepping along the float array once for each 8 integers. |
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| 44 | * @param c pointer to FmtConvertContext. |
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| 45 | * @param dst destination array of float. |
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| 46 | * constraints: 16-byte aligned |
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| 47 | * @param src source array of int32_t. |
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| 48 | * constraints: 16-byte aligned |
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| 49 | * @param mul source array of float multipliers. |
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| 50 | * @param len number of elements to convert. |
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| 51 | * constraints: multiple of 8 |
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| 52 | */ |
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| 53 | void (*int32_to_float_fmul_array8)(struct FmtConvertContext *c, |
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| 54 | float *dst, const int32_t *src, |
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| 55 | const float *mul, int len); |
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| 56 | |||
| 57 | } FmtConvertContext; |
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| 58 | |||
| 59 | void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx); |
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| 60 | |||
| 61 | void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx); |
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| 62 | void ff_fmt_convert_init_ppc(FmtConvertContext *c, AVCodecContext *avctx); |
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| 63 | void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx); |
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| 64 | void ff_fmt_convert_init_mips(FmtConvertContext *c); |
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| 65 | |||
| 66 | #endif /* AVCODEC_FMTCONVERT_H */ |