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65 lines
2.6 KiB
65 lines
2.6 KiB
/* |
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* Format Conversion Utils |
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* Copyright (c) 2000, 2001 Fabrice Bellard |
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_FMTCONVERT_H |
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#define AVCODEC_FMTCONVERT_H |
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#include "avcodec.h" |
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typedef struct FmtConvertContext { |
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/** |
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* Convert an array of int32_t to float and multiply by a float value. |
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* @param dst destination array of float. |
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* constraints: 16-byte aligned |
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* @param src source array of int32_t. |
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* constraints: 16-byte aligned |
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* @param len number of elements to convert. |
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* constraints: multiple of 8 |
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*/ |
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void (*int32_to_float_fmul_scalar)(float *dst, const int32_t *src, |
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float mul, int len); |
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/** |
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* Convert an array of int32_t to float and multiply by a float value from another array, |
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* stepping along the float array once for each 8 integers. |
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* @param c pointer to FmtConvertContext. |
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* @param dst destination array of float. |
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* constraints: 16-byte aligned |
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* @param src source array of int32_t. |
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* constraints: 16-byte aligned |
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* @param mul source array of float multipliers. |
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* @param len number of elements to convert. |
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* constraints: multiple of 8 |
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*/ |
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void (*int32_to_float_fmul_array8)(struct FmtConvertContext *c, |
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float *dst, const int32_t *src, |
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const float *mul, int len); |
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} FmtConvertContext; |
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void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx); |
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void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx); |
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void ff_fmt_convert_init_ppc(FmtConvertContext *c, AVCodecContext *avctx); |
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void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx); |
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#endif /* AVCODEC_FMTCONVERT_H */
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