FFmpeg  4.4
vf_overlay.h
Go to the documentation of this file.
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVFILTER_OVERLAY_H
20 #define AVFILTER_OVERLAY_H
21 
22 #include "libavutil/eval.h"
23 #include "libavutil/pixdesc.h"
24 #include "framesync.h"
25 #include "avfilter.h"
26 
27 enum var_name {
40 };
41 
52 };
53 
54 typedef struct OverlayContext {
55  const AVClass *class;
56  int x, y; ///< position of overlaid picture
57 
64  int format; ///< OverlayFormat
66  int eval_mode; ///< EvalMode
67 
69 
70  int main_pix_step[4]; ///< steps per pixel for each plane of the main output
71  int overlay_pix_step[4]; ///< steps per pixel for each plane of the overlay
72  int hsub, vsub; ///< chroma subsampling values
73  const AVPixFmtDescriptor *main_desc; ///< format descriptor for main input
74 
76  char *x_expr, *y_expr;
77 
79 
80  int (*blend_row[4])(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a, int w,
81  ptrdiff_t alinesize);
82  int (*blend_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
84 
85 void ff_overlay_init_x86(OverlayContext *s, int format, int pix_format,
86  int alpha_format, int main_has_alpha);
87 
88 #endif /* AVFILTER_OVERLAY_H */
static const char *const format[]
Definition: af_aiir.c:456
uint8_t
Main libavfilter public API header.
#define s(width, name)
Definition: cbs_vp9.c:257
simple arithmetic expression evaluator
int
const char * arg
Definition: jacosubdec.c:66
uint8_t w
Definition: llviddspenc.c:39
var_name
Definition: setts_bsf.c:50
Describe the class of an AVClass context structure.
Definition: log.h:67
Definition: eval.c:157
An instance of a filter.
Definition: avfilter.h:341
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
Frame sync structure.
Definition: framesync.h:146
uint8_t main_is_packed_rgb
Definition: vf_overlay.h:58
uint8_t overlay_is_packed_rgb
Definition: vf_overlay.h:61
char * y_expr
Definition: vf_overlay.h:76
uint8_t main_has_alpha
Definition: vf_overlay.h:60
AVExpr * y_pexpr
Definition: vf_overlay.h:78
double var_values[VAR_VARS_NB]
Definition: vf_overlay.h:75
uint8_t overlay_has_alpha
Definition: vf_overlay.h:63
int(* blend_row[4])(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a, int w, ptrdiff_t alinesize)
Definition: vf_overlay.h:80
int y
position of overlaid picture
Definition: vf_overlay.h:56
char * x_expr
Definition: vf_overlay.h:76
const AVPixFmtDescriptor * main_desc
format descriptor for main input
Definition: vf_overlay.h:73
AVExpr * x_pexpr
Definition: vf_overlay.h:78
FFFrameSync fs
Definition: vf_overlay.h:68
int eval_mode
EvalMode.
Definition: vf_overlay.h:66
int format
OverlayFormat.
Definition: vf_overlay.h:64
int vsub
chroma subsampling values
Definition: vf_overlay.h:72
int main_pix_step[4]
steps per pixel for each plane of the main output
Definition: vf_overlay.h:70
uint8_t main_rgba_map[4]
Definition: vf_overlay.h:59
int(* blend_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_overlay.h:82
uint8_t overlay_rgba_map[4]
Definition: vf_overlay.h:62
int overlay_pix_step[4]
steps per pixel for each plane of the overlay
Definition: vf_overlay.h:71
AVFormatContext * ctx
Definition: movenc.c:48
@ VAR_VSUB
Definition: vf_overlay.h:33
@ VAR_POS
Definition: vf_overlay.h:37
@ VAR_OH
Definition: vf_overlay.h:31
@ VAR_MAIN_H
Definition: vf_overlay.h:29
@ VAR_OW
Definition: vf_overlay.h:30
@ VAR_OVERLAY_H
Definition: vf_overlay.h:31
@ VAR_MAIN_W
Definition: vf_overlay.h:28
@ VAR_MW
Definition: vf_overlay.h:28
@ VAR_N
Definition: vf_overlay.h:36
@ VAR_VARS_NB
Definition: vf_overlay.h:39
@ VAR_HSUB
Definition: vf_overlay.h:32
@ VAR_X
Definition: vf_overlay.h:34
@ VAR_MH
Definition: vf_overlay.h:29
@ VAR_T
Definition: vf_overlay.h:38
@ VAR_Y
Definition: vf_overlay.h:35
@ VAR_OVERLAY_W
Definition: vf_overlay.h:30
OverlayFormat
Definition: vf_overlay.h:42
@ OVERLAY_FORMAT_YUV420
Definition: vf_overlay.h:43
@ OVERLAY_FORMAT_YUV444
Definition: vf_overlay.h:47
@ OVERLAY_FORMAT_NB
Definition: vf_overlay.h:51
@ OVERLAY_FORMAT_YUV422
Definition: vf_overlay.h:45
@ OVERLAY_FORMAT_YUV420P10
Definition: vf_overlay.h:44
@ OVERLAY_FORMAT_RGB
Definition: vf_overlay.h:48
@ OVERLAY_FORMAT_AUTO
Definition: vf_overlay.h:50
@ OVERLAY_FORMAT_YUV422P10
Definition: vf_overlay.h:46
@ OVERLAY_FORMAT_GBRP
Definition: vf_overlay.h:49
void ff_overlay_init_x86(OverlayContext *s, int format, int pix_format, int alpha_format, int main_has_alpha)