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60 lines
2.3 KiB
60 lines
2.3 KiB
11 years ago
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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_AUDIODSP_H
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#define AVCODEC_AUDIODSP_H
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#include <stdint.h>
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typedef struct AudioDSPContext {
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/**
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* Calculate scalar product of two vectors.
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* @param len length of vectors, should be multiple of 16
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*/
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int32_t (*scalarproduct_int16)(const int16_t *v1,
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const int16_t *v2 /* align 16 */, int len);
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/**
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* Clip each element in an array of int32_t to a given minimum and
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* maximum value.
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* @param dst destination array
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* constraints: 16-byte aligned
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* @param src source array
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* constraints: 16-byte aligned
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* @param min minimum value
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* constraints: must be in the range [-(1 << 24), 1 << 24]
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* @param max maximum value
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* constraints: must be in the range [-(1 << 24), 1 << 24]
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* @param len number of elements in the array
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* constraints: multiple of 32 greater than zero
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*/
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void (*vector_clip_int32)(int32_t *dst, const int32_t *src, int32_t min,
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int32_t max, unsigned int len);
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/* assume len is a multiple of 8, and arrays are 16-byte aligned */
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void (*vector_clipf)(float *dst /* align 16 */,
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const float *src /* align 16 */,
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float min, float max, int len /* align 16 */);
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} AudioDSPContext;
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void ff_audiodsp_init(AudioDSPContext *c);
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void ff_audiodsp_init_arm(AudioDSPContext *c);
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void ff_audiodsp_init_ppc(AudioDSPContext *c);
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void ff_audiodsp_init_x86(AudioDSPContext *c);
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#endif /* AVCODEC_AUDIODSP_H */
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