| /* | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * FFmpeg is distributed in the hope that it will be useful, | |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with FFmpeg; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| typedef struct AVFloatDSPContext { | |
| /** | |
| * Calculate the entry wise product of two vectors of floats and store the result in | |
| * a vector of floats. | |
| * | |
| * @param dst output vector | |
| * constraints: 32-byte aligned | |
| * @param src0 first input vector | |
| * constraints: 32-byte aligned | |
| * @param src1 second input vector | |
| * constraints: 32-byte aligned | |
| * @param len number of elements in the input | |
| * constraints: multiple of 16 | |
| */ | |
| void (*vector_fmul)(float *dst, const float *src0, const float *src1, | |
| int len); | |
| /** | |
| * Multiply a vector of floats by a scalar float and add to | |
| * destination vector. Source and destination vectors must | |
| * overlap exactly or not at all. | |
| * | |
| * @param dst result vector | |
| * constraints: 32-byte aligned | |
| * @param src input vector | |
| * constraints: 32-byte aligned | |
| * @param mul scalar value | |
| * @param len length of vector | |
| * constraints: multiple of 16 | |
| */ | |
| void (*vector_fmac_scalar)(float *dst, const float *src, float mul, | |
| int len); | |
| /** | |
| * Multiply a vector of doubles by a scalar double and add to | |
| * destination vector. Source and destination vectors must | |
| * overlap exactly or not at all. | |
| * | |
| * @param dst result vector | |
| * constraints: 32-byte aligned | |
| * @param src input vector | |
| * constraints: 32-byte aligned | |
| * @param mul scalar value | |
| * @param len length of vector | |
| * constraints: multiple of 16 | |
| */ | |
| void (*vector_dmac_scalar)(double *dst, const double *src, double mul, | |
| int len); | |
| /** | |
| * Multiply a vector of floats by a scalar float. Source and | |
| * destination vectors must overlap exactly or not at all. | |
| * | |
| * @param dst result vector | |
| * constraints: 16-byte aligned | |
| * @param src input vector | |
| * constraints: 16-byte aligned | |
| * @param mul scalar value | |
| * @param len length of vector | |
| * constraints: multiple of 4 | |
| */ | |
| void (*vector_fmul_scalar)(float *dst, const float *src, float mul, | |
| int len); | |
| /** | |
| * Multiply a vector of double by a scalar double. Source and | |
| * destination vectors must overlap exactly or not at all. | |
| * | |
| * @param dst result vector | |
| * constraints: 32-byte aligned | |
| * @param src input vector | |
| * constraints: 32-byte aligned | |
| * @param mul scalar value | |
| * @param len length of vector | |
| * constraints: multiple of 8 | |
| */ | |
| void (*vector_dmul_scalar)(double *dst, const double *src, double mul, | |
| int len); | |
| /** | |
| * Overlap/add with window function. | |
| * Used primarily by MDCT-based audio codecs. | |
| * Source and destination vectors must overlap exactly or not at all. | |
| * | |
| * @param dst result vector | |
| * constraints: 16-byte aligned | |
| * @param src0 first source vector | |
| * constraints: 16-byte aligned | |
| * @param src1 second source vector | |
| * constraints: 16-byte aligned | |
| * @param win half-window vector | |
| * constraints: 16-byte aligned | |
| * @param len length of vector | |
| * constraints: multiple of 4 | |
| */ | |
| void (*vector_fmul_window)(float *dst, const float *src0, | |
| const float *src1, const float *win, int len); | |
| /** | |
| * Calculate the entry wise product of two vectors of floats, add a third vector of | |
| * floats and store the result in a vector of floats. | |
| * | |
| * @param dst output vector | |
| * constraints: 32-byte aligned | |
| * @param src0 first input vector | |
| * constraints: 32-byte aligned | |
| * @param src1 second input vector | |
| * constraints: 32-byte aligned | |
| * @param src2 third input vector | |
| * constraints: 32-byte aligned | |
| * @param len number of elements in the input | |
| * constraints: multiple of 16 | |
| */ | |
| void (*vector_fmul_add)(float *dst, const float *src0, const float *src1, | |
| const float *src2, int len); | |
| /** | |
| * Calculate the entry wise product of two vectors of floats, and store the result | |
| * in a vector of floats. The second vector of floats is iterated over | |
| * in reverse order. | |
| * | |
| * @param dst output vector | |
| * constraints: 32-byte aligned | |
| * @param src0 first input vector | |
| * constraints: 32-byte aligned | |
| * @param src1 second input vector | |
| * constraints: 32-byte aligned | |
| * @param len number of elements in the input | |
| * constraints: multiple of 16 | |
| */ | |
| void (*vector_fmul_reverse)(float *dst, const float *src0, | |
| const float *src1, int len); | |
| /** | |
| * Calculate the sum and difference of two vectors of floats. | |
| * | |
| * @param v1 first input vector, sum output, 16-byte aligned | |
| * @param v2 second input vector, difference output, 16-byte aligned | |
| * @param len length of vectors, multiple of 4 | |
| */ | |
| void (*butterflies_float)(float *av_restrict v1, float *av_restrict v2, int len); | |
| /** | |
| * Calculate the scalar product of two vectors of floats. | |
| * | |
| * @param v1 first vector, 16-byte aligned | |
| * @param v2 second vector, 16-byte aligned | |
| * @param len length of vectors, multiple of 4 | |
| * | |
| * @return sum of elementwise products | |
| */ | |
| float (*scalarproduct_float)(const float *v1, const float *v2, int len); | |
| /** | |
| * Calculate the entry wise product of two vectors of doubles and store the result in | |
| * a vector of doubles. | |
| * | |
| * @param dst output vector | |
| * constraints: 32-byte aligned | |
| * @param src0 first input vector | |
| * constraints: 32-byte aligned | |
| * @param src1 second input vector | |
| * constraints: 32-byte aligned | |
| * @param len number of elements in the input | |
| * constraints: multiple of 16 | |
| */ | |
| void (*vector_dmul)(double *dst, const double *src0, const double *src1, | |
| int len); | |
| } AVFloatDSPContext; | |
| /** | |
| * Return the scalar product of two vectors. | |
| * | |
| * @param v1 first input vector | |
| * @param v2 first input vector | |
| * @param len number of elements | |
| * | |
| * @return sum of elementwise products | |
| */ | |
| float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len); | |
| void ff_float_dsp_init_aarch64(AVFloatDSPContext *fdsp); | |
| void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp); | |
| void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int strict); | |
| void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp); | |
| void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp); | |
| void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp); | |
| /** | |
| * Allocate a float DSP context. | |
| * | |
| * @param strict setting to non-zero avoids using functions which may not be IEEE-754 compliant | |
| */ | |
| AVFloatDSPContext *avpriv_float_dsp_alloc(int strict); | |