FFmpeg
llauddsp_init.c
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1 /*
2  * Copyright © 2023 Rémi Denis-Courmont.
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "config.h"
22 
23 #include "libavutil/attributes.h"
24 #include "libavutil/cpu.h"
26 
27 int32_t ff_scalarproduct_and_madd_int16_rvv(int16_t *v1, const int16_t *v2,
28  const int16_t *v3, int len,
29  int mul);
31  const int16_t *v3, int len,
32  int mul);
33 
35 {
36 #if HAVE_RVV
37  int flags = av_get_cpu_flags();
38 
40  c->scalarproduct_and_madd_int16 = ff_scalarproduct_and_madd_int16_rvv;
41  c->scalarproduct_and_madd_int32 = ff_scalarproduct_and_madd_int32_rvv;
42  }
43 #endif
44 }
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:109
AV_CPU_FLAG_RVB
#define AV_CPU_FLAG_RVB
B (bit manipulations)
Definition: cpu.h:102
av_cold
#define av_cold
Definition: attributes.h:90
LLAudDSPContext
Definition: lossless_audiodsp.h:28
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
cpu.h
attributes.h
AV_CPU_FLAG_RVV_I32
#define AV_CPU_FLAG_RVV_I32
Vectors of 8/16/32-bit int's *‍/.
Definition: cpu.h:92
len
int len
Definition: vorbis_enc_data.h:426
lossless_audiodsp.h
ff_scalarproduct_and_madd_int16_rvv
int32_t ff_scalarproduct_and_madd_int16_rvv(int16_t *v1, const int16_t *v2, const int16_t *v3, int len, int mul)
ff_llauddsp_init_riscv
av_cold void ff_llauddsp_init_riscv(LLAudDSPContext *c)
Definition: llauddsp_init.c:34
ff_scalarproduct_and_madd_int32_rvv
int32_t ff_scalarproduct_and_madd_int32_rvv(int16_t *v1, const int32_t *v2, const int16_t *v3, int len, int mul)
int32_t
int32_t
Definition: audioconvert.c:56
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:482