FFmpeg
jpeg2000dsp_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 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavcodec/jpeg2000dsp.h"
25 
26 void ff_ict_float_rvv(void *src0, void *src1, void *src2, int csize);
27 void ff_rct_int_rvv(void *src0, void *src1, void *src2, int csize);
28 
30 {
31 #if HAVE_RVV
32  int flags = av_get_cpu_flags();
33 
36  c->mct_decode[FF_DWT97] = ff_ict_float_rvv;
37  c->mct_decode[FF_DWT53] = ff_rct_int_rvv;
38  }
39 #endif
40 }
ff_ict_float_rvv
void ff_ict_float_rvv(void *src0, void *src1, void *src2, int csize)
src1
const pixel * src1
Definition: h264pred_template.c:421
FF_DWT97
@ FF_DWT97
Definition: jpeg2000dwt.h:38
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_CPU_FLAG_RVV_F32
#define AV_CPU_FLAG_RVV_F32
Vectors of float's *‍/.
Definition: cpu.h:93
av_cold
#define av_cold
Definition: attributes.h:90
Jpeg2000DSPContext
Definition: jpeg2000dsp.h:29
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
ff_rct_int_rvv
void ff_rct_int_rvv(void *src0, void *src1, void *src2, int csize)
src2
const pixel * src2
Definition: h264pred_template.c:422
AV_CPU_FLAG_RVV_I32
#define AV_CPU_FLAG_RVV_I32
Vectors of 8/16/32-bit int's *‍/.
Definition: cpu.h:92
FF_DWT53
@ FF_DWT53
Definition: jpeg2000dwt.h:39
jpeg2000dsp.h
ff_jpeg2000dsp_init_riscv
av_cold void ff_jpeg2000dsp_init_riscv(Jpeg2000DSPContext *c)
Definition: jpeg2000dsp_init.c:29
src0
const pixel *const src0
Definition: h264pred_template.c:420
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:482