FFmpeg
cfhddsp_init.c
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1 /*
2  * Copyright (c) 2020 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 <stdint.h>
22 
23 #include "libavutil/attributes.h"
24 #include "libavutil/cpu.h"
25 #include "libavutil/x86/cpu.h"
26 #include "libavcodec/avcodec.h"
27 #include "libavcodec/cfhddsp.h"
28 
29 void ff_cfhd_horiz_filter_sse2(int16_t *output, ptrdiff_t out_stride,
30  const int16_t *low, ptrdiff_t low_stride,
31  const int16_t *high, ptrdiff_t high_stride,
32  int width, int height);
33 void ff_cfhd_vert_filter_sse2(int16_t *output, ptrdiff_t out_stride,
34  const int16_t *low, ptrdiff_t low_stride,
35  const int16_t *high, ptrdiff_t high_stride,
36  int width, int height);
37 void ff_cfhd_horiz_filter_clip10_sse2(int16_t *output, const int16_t *low, const int16_t *high, int width, int bpc);
38 void ff_cfhd_horiz_filter_clip12_sse2(int16_t *output, const int16_t *low, const int16_t *high, int width, int bpc);
39 
40 av_cold void ff_cfhddsp_init_x86(CFHDDSPContext *c, int depth, int bayer)
41 {
43 
44  if (EXTERNAL_SSE2(cpu_flags)) {
47  if (depth == 10 && !bayer)
49  if (depth == 12 && !bayer)
51  }
52 }
static atomic_int cpu_flags
Definition: cpu.c:50
void(* vert_filter)(int16_t *output, ptrdiff_t out_stride, const int16_t *low, ptrdiff_t low_stride, const int16_t *high, ptrdiff_t high_stride, int width, int height)
Definition: cfhddsp.h:31
Macro definitions for various function/variable attributes.
#define av_cold
Definition: attributes.h:88
void(* horiz_filter_clip)(int16_t *output, const int16_t *low, const int16_t *high, int width, int bpc)
Definition: cfhddsp.h:36
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
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce output
#define height
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
void ff_cfhd_horiz_filter_clip12_sse2(int16_t *output, const int16_t *low, const int16_t *high, int width, int bpc)
void ff_cfhd_vert_filter_sse2(int16_t *output, ptrdiff_t out_stride, const int16_t *low, ptrdiff_t low_stride, const int16_t *high, ptrdiff_t high_stride, int width, int height)
#define width
Libavcodec external API header.
void ff_cfhd_horiz_filter_sse2(int16_t *output, ptrdiff_t out_stride, const int16_t *low, ptrdiff_t low_stride, const int16_t *high, ptrdiff_t high_stride, int width, int height)
void ff_cfhd_horiz_filter_clip10_sse2(int16_t *output, const int16_t *low, const int16_t *high, int width, int bpc)
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
av_cold void ff_cfhddsp_init_x86(CFHDDSPContext *c, int depth, int bayer)
Definition: cfhddsp_init.c:40
void(* horiz_filter)(int16_t *output, ptrdiff_t out_stride, const int16_t *low, ptrdiff_t low_stride, const int16_t *high, ptrdiff_t high_stride, int width, int height)
Definition: cfhddsp.h:26