FFmpeg
vf_overlay_init.c
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1 /*
2  * Copyright (c) 2018 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 "libavutil/attributes.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/cpu.h"
24 #include "libavfilter/vf_overlay.h"
25 
26 int ff_overlay_row_44_sse4(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a,
27  int w, ptrdiff_t alinesize);
28 
29 int ff_overlay_row_20_sse4(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a,
30  int w, ptrdiff_t alinesize);
31 
32 int ff_overlay_row_22_sse4(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a,
33  int w, ptrdiff_t alinesize);
34 
35 av_cold void ff_overlay_init_x86(OverlayContext *s, int format, int pix_format,
36  int alpha_format, int main_has_alpha)
37 {
39 
40  if (EXTERNAL_SSE4(cpu_flags) &&
43  alpha_format == 0 && main_has_alpha == 0) {
44  s->blend_row[0] = ff_overlay_row_44_sse4;
45  s->blend_row[1] = ff_overlay_row_44_sse4;
46  s->blend_row[2] = ff_overlay_row_44_sse4;
47  }
48 
49  if (EXTERNAL_SSE4(cpu_flags) &&
50  (pix_format == AV_PIX_FMT_YUV420P) &&
52  alpha_format == 0 && main_has_alpha == 0) {
53  s->blend_row[0] = ff_overlay_row_44_sse4;
54  s->blend_row[1] = ff_overlay_row_20_sse4;
55  s->blend_row[2] = ff_overlay_row_20_sse4;
56  }
57 
58  if (EXTERNAL_SSE4(cpu_flags) &&
60  alpha_format == 0 && main_has_alpha == 0) {
61  s->blend_row[0] = ff_overlay_row_44_sse4;
62  s->blend_row[1] = ff_overlay_row_22_sse4;
63  s->blend_row[2] = ff_overlay_row_22_sse4;
64  }
65 }
cpu.h
ff_overlay_row_20_sse4
int ff_overlay_row_20_sse4(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a, int w, ptrdiff_t alinesize)
w
uint8_t w
Definition: llviddspenc.c:39
ff_overlay_row_22_sse4
int ff_overlay_row_22_sse4(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a, int w, ptrdiff_t alinesize)
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:50
av_cold
#define av_cold
Definition: attributes.h:90
s
#define s(width, name)
Definition: cbs_vp9.c:257
OVERLAY_FORMAT_YUV422
@ OVERLAY_FORMAT_YUV422
Definition: vf_overlay.h:45
vf_overlay.h
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
OverlayContext
Definition: vf_overlay.h:54
ff_overlay_row_44_sse4
int ff_overlay_row_44_sse4(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a, int w, ptrdiff_t alinesize)
cpu.h
OVERLAY_FORMAT_YUV420
@ OVERLAY_FORMAT_YUV420
Definition: vf_overlay.h:43
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
attributes.h
ff_overlay_init_x86
av_cold void ff_overlay_init_x86(OverlayContext *s, int format, int pix_format, int alpha_format, int main_has_alpha)
Definition: vf_overlay_init.c:35
EXTERNAL_SSE4
#define EXTERNAL_SSE4(flags)
Definition: cpu.h:68
OVERLAY_FORMAT_GBRP
@ OVERLAY_FORMAT_GBRP
Definition: vf_overlay.h:49
OVERLAY_FORMAT_YUV444
@ OVERLAY_FORMAT_YUV444
Definition: vf_overlay.h:47
format
fg outputs[0] format
Definition: ffmpeg_filter.c:175
d
d
Definition: ffmpeg_filter.c:156