FFmpeg
utvideodsp_init.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2017 Paul B Mahol
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 "libavutil/x86/asm.h"
25 #include "libavutil/x86/cpu.h"
26 #include "libavcodec/utvideodsp.h"
27 
28 void ff_restore_rgb_planes_sse2(uint8_t *src_r, uint8_t *src_g, uint8_t *src_b,
29  ptrdiff_t linesize_r, ptrdiff_t linesize_g,
30  ptrdiff_t linesize_b, int width, int height);
31 void ff_restore_rgb_planes_avx2(uint8_t *src_r, uint8_t *src_g, uint8_t *src_b,
32  ptrdiff_t linesize_r, ptrdiff_t linesize_g,
33  ptrdiff_t linesize_b, int width, int height);
34 
35 void ff_restore_rgb_planes10_sse2(uint16_t *src_r, uint16_t *src_g, uint16_t *src_b,
36  ptrdiff_t linesize_r, ptrdiff_t linesize_g,
37  ptrdiff_t linesize_b, int width, int height);
38 void ff_restore_rgb_planes10_avx2(uint16_t *src_r, uint16_t *src_g, uint16_t *src_b,
39  ptrdiff_t linesize_r, ptrdiff_t linesize_g,
40  ptrdiff_t linesize_b, int width, int height);
41 
42 av_cold void ff_utvideodsp_init_x86(UTVideoDSPContext *c)
43 {
44  int cpu_flags = av_get_cpu_flags();
45 
46  if (EXTERNAL_SSE2(cpu_flags)) {
47  c->restore_rgb_planes = ff_restore_rgb_planes_sse2;
48  c->restore_rgb_planes10 = ff_restore_rgb_planes10_sse2;
49  }
50  if (EXTERNAL_AVX2_FAST(cpu_flags)) {
51  c->restore_rgb_planes = ff_restore_rgb_planes_avx2;
52  c->restore_rgb_planes10 = ff_restore_rgb_planes10_avx2;
53  }
54 }
UTVideoDSPContext
Definition: utvideodsp.h:27
cpu.h
EXTERNAL_AVX2_FAST
#define EXTERNAL_AVX2_FAST(flags)
Definition: cpu.h:79
ff_restore_rgb_planes_sse2
void ff_restore_rgb_planes_sse2(uint8_t *src_r, uint8_t *src_g, uint8_t *src_b, ptrdiff_t linesize_r, ptrdiff_t linesize_g, ptrdiff_t linesize_b, int width, int height)
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:103
ff_utvideodsp_init_x86
av_cold void ff_utvideodsp_init_x86(UTVideoDSPContext *c)
Definition: utvideodsp_init.c:42
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:52
av_cold
#define av_cold
Definition: attributes.h:90
width
#define width
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
asm.h
ff_restore_rgb_planes_avx2
void ff_restore_rgb_planes_avx2(uint8_t *src_r, uint8_t *src_g, uint8_t *src_b, ptrdiff_t linesize_r, ptrdiff_t linesize_g, ptrdiff_t linesize_b, int width, int height)
height
#define height
attributes.h
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
ff_restore_rgb_planes10_sse2
void ff_restore_rgb_planes10_sse2(uint16_t *src_r, uint16_t *src_g, uint16_t *src_b, ptrdiff_t linesize_r, ptrdiff_t linesize_g, ptrdiff_t linesize_b, int width, int height)
ff_restore_rgb_planes10_avx2
void ff_restore_rgb_planes10_avx2(uint16_t *src_r, uint16_t *src_g, uint16_t *src_b, ptrdiff_t linesize_r, ptrdiff_t linesize_g, ptrdiff_t linesize_b, int width, int height)
utvideodsp.h
Generated on Thu Sep 26 2024 23:15:18 for FFmpeg by   doxygen 1.8.17