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Diffstat (limited to 'ffmpeg1/libavutil/float_dsp.h')
| -rw-r--r-- | ffmpeg1/libavutil/float_dsp.h | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/ffmpeg1/libavutil/float_dsp.h b/ffmpeg1/libavutil/float_dsp.h deleted file mode 100644 index d0447d6..0000000 --- a/ffmpeg1/libavutil/float_dsp.h +++ /dev/null @@ -1,189 +0,0 @@ -/* - * 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 - */ - -#ifndef AVUTIL_FLOAT_DSP_H -#define AVUTIL_FLOAT_DSP_H - -#include "config.h" - -typedef struct AVFloatDSPContext { - /** - * Calculate the 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 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 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 src1 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 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 src1 third 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); -} 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); - -/** - * Initialize a float DSP context. - * - * @param fdsp float DSP context - * @param strict setting to non-zero avoids using functions which may not be IEEE-754 compliant - */ -void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int strict); - - -void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp); -void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int strict); -void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp); -void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp); - -#endif /* AVUTIL_FLOAT_DSP_H */ |