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59 lines
2.3 KiB
59 lines
2.3 KiB
/* |
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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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