From d5a7229ba4aabc2b6407c731d9175879ae54c5ea Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Mon, 21 May 2012 12:58:41 -0400 Subject: Add a float DSP framework to libavutil Move vector_fmul() from DSPContext to AVFloatDSPContext. --- libavutil/float_dsp.h | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 libavutil/float_dsp.h (limited to 'libavutil/float_dsp.h') diff --git a/libavutil/float_dsp.h b/libavutil/float_dsp.h new file mode 100644 index 0000000000..30161a252b --- /dev/null +++ b/libavutil/float_dsp.h @@ -0,0 +1,53 @@ +/* + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; 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 + +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); +} AVFloatDSPContext; + +/** + * 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); + +#endif /* AVUTIL_FLOAT_DSP_H */ -- cgit v1.2.3