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https://github.com/FFmpeg/FFmpeg.git
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c48213b2dc
This was added along side the original SSE(one) DSP function in
0a68cd876e without rationale. This was
presumably faster on x87, which is no longer relevant since we pretty
much assume SSE2 or later on x86.
Meanwhile this function is ~2.5x slower than the normal floating point
one on SiFive-U74.
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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#include <stdint.h>
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#include "libavutil/attributes.h"
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#include "libavutil/common.h"
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#include "audiodsp.h"
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static void vector_clipf_c(float *dst, const float *src, int len,
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float min, float max)
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{
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for (int i = 0; i < len; i += 8) {
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float tmp[8];
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for (int j = 0; j < 8; j++)
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tmp[j]= av_clipf(src[i + j], min, max);
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for (int j = 0; j < 8; j++)
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dst[i + j] = tmp[j];
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}
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}
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static int32_t scalarproduct_int16_c(const int16_t *v1, const int16_t *v2,
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int order)
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{
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unsigned res = 0;
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while (order--)
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res += *v1++ **v2++;
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return res;
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}
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static void vector_clip_int32_c(int32_t *dst, const int32_t *src, int32_t min,
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int32_t max, unsigned int len)
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{
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do {
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*dst++ = av_clip(*src++, min, max);
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*dst++ = av_clip(*src++, min, max);
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*dst++ = av_clip(*src++, min, max);
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*dst++ = av_clip(*src++, min, max);
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*dst++ = av_clip(*src++, min, max);
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*dst++ = av_clip(*src++, min, max);
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*dst++ = av_clip(*src++, min, max);
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*dst++ = av_clip(*src++, min, max);
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len -= 8;
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} while (len > 0);
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}
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av_cold void ff_audiodsp_init(AudioDSPContext *c)
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{
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c->scalarproduct_int16 = scalarproduct_int16_c;
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c->vector_clip_int32 = vector_clip_int32_c;
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c->vector_clipf = vector_clipf_c;
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#if ARCH_ARM
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ff_audiodsp_init_arm(c);
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#elif ARCH_PPC
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ff_audiodsp_init_ppc(c);
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#elif ARCH_RISCV
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ff_audiodsp_init_riscv(c);
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#elif ARCH_X86
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ff_audiodsp_init_x86(c);
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#endif
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}
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