FFmpeg
vf_overlay.h
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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
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8  *
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11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
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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 
59  uint8_t main_rgba_map[4];
60  uint8_t main_has_alpha;
62  uint8_t overlay_rgba_map[4];
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 */
OverlayContext::blend_slice
int(* blend_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_overlay.h:82
VAR_N
@ VAR_N
Definition: vf_overlay.h:36
VAR_OW
@ VAR_OW
Definition: vf_overlay.h:30
OverlayFormat
OverlayFormat
Definition: vf_overlay.h:42
pixdesc.h
w
uint8_t w
Definition: llviddspenc.c:39
VAR_X
@ VAR_X
Definition: vf_overlay.h:34
OverlayContext::var_values
double var_values[VAR_VARS_NB]
Definition: vf_overlay.h:75
OverlayContext::y
int y
position of overlaid picture
Definition: vf_overlay.h:56
OverlayContext::main_desc
const AVPixFmtDescriptor * main_desc
format descriptor for main input
Definition: vf_overlay.h:73
OverlayContext::y_expr
char * y_expr
Definition: vf_overlay.h:76
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_overlay.h:39
OVERLAY_FORMAT_RGB
@ OVERLAY_FORMAT_RGB
Definition: vf_overlay.h:48
OverlayContext::vsub
int vsub
chroma subsampling values
Definition: vf_overlay.h:72
OVERLAY_FORMAT_YUV422P10
@ OVERLAY_FORMAT_YUV422P10
Definition: vf_overlay.h:46
ff_overlay_init_x86
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
OverlayContext::eval_mode
int eval_mode
EvalMode.
Definition: vf_overlay.h:66
var_name
var_name
Definition: setts_bsf.c:50
s
#define s(width, name)
Definition: cbs_vp9.c:257
OverlayContext::alpha_format
int alpha_format
Definition: vf_overlay.h:65
OVERLAY_FORMAT_YUV422
@ OVERLAY_FORMAT_YUV422
Definition: vf_overlay.h:45
VAR_HSUB
@ VAR_HSUB
Definition: vf_overlay.h:32
OverlayContext::x_expr
char * x_expr
Definition: vf_overlay.h:76
OverlayContext::main_is_packed_rgb
uint8_t main_is_packed_rgb
Definition: vf_overlay.h:58
VAR_MW
@ VAR_MW
Definition: vf_overlay.h:28
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AVExpr
Definition: eval.c:157
OverlayContext::x
int x
Definition: vf_overlay.h:56
arg
const char * arg
Definition: jacosubdec.c:67
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
VAR_T
@ VAR_T
Definition: vf_overlay.h:38
OverlayContext
Definition: vf_overlay.h:54
eval.h
VAR_MAIN_W
@ VAR_MAIN_W
Definition: vf_overlay.h:28
OverlayContext::overlay_has_alpha
uint8_t overlay_has_alpha
Definition: vf_overlay.h:63
OVERLAY_FORMAT_NB
@ OVERLAY_FORMAT_NB
Definition: vf_overlay.h:51
OVERLAY_FORMAT_YUV420P10
@ OVERLAY_FORMAT_YUV420P10
Definition: vf_overlay.h:44
OVERLAY_FORMAT_YUV420
@ OVERLAY_FORMAT_YUV420
Definition: vf_overlay.h:43
VAR_MH
@ VAR_MH
Definition: vf_overlay.h:29
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
VAR_POS
@ VAR_POS
Definition: vf_overlay.h:37
OverlayContext::hsub
int hsub
Definition: vf_overlay.h:72
OverlayContext::main_pix_step
int main_pix_step[4]
steps per pixel for each plane of the main output
Definition: vf_overlay.h:70
OVERLAY_FORMAT_AUTO
@ OVERLAY_FORMAT_AUTO
Definition: vf_overlay.h:50
OverlayContext::overlay_is_packed_rgb
uint8_t overlay_is_packed_rgb
Definition: vf_overlay.h:61
OverlayContext::x_pexpr
AVExpr * x_pexpr
Definition: vf_overlay.h:78
VAR_OVERLAY_H
@ VAR_OVERLAY_H
Definition: vf_overlay.h:31
OverlayContext::overlay_rgba_map
uint8_t overlay_rgba_map[4]
Definition: vf_overlay.h:62
OverlayContext::y_pexpr
AVExpr * y_pexpr
Definition: vf_overlay.h:78
OverlayContext::format
int format
OverlayFormat.
Definition: vf_overlay.h:64
VAR_Y
@ VAR_Y
Definition: vf_overlay.h:35
framesync.h
VAR_VSUB
@ VAR_VSUB
Definition: vf_overlay.h:33
VAR_MAIN_H
@ VAR_MAIN_H
Definition: vf_overlay.h:29
OverlayContext::blend_row
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
avfilter.h
VAR_OH
@ VAR_OH
Definition: vf_overlay.h:31
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
OVERLAY_FORMAT_GBRP
@ OVERLAY_FORMAT_GBRP
Definition: vf_overlay.h:49
OverlayContext::fs
FFFrameSync fs
Definition: vf_overlay.h:68
OVERLAY_FORMAT_YUV444
@ OVERLAY_FORMAT_YUV444
Definition: vf_overlay.h:47
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:70
OverlayContext::overlay_pix_step
int overlay_pix_step[4]
steps per pixel for each plane of the overlay
Definition: vf_overlay.h:71
format
fg outputs[0] format
Definition: ffmpeg_filter.c:175
d
d
Definition: ffmpeg_filter.c:156
int
int
Definition: ffmpeg_filter.c:156
VAR_OVERLAY_W
@ VAR_OVERLAY_W
Definition: vf_overlay.h:30
OverlayContext::main_has_alpha
uint8_t main_has_alpha
Definition: vf_overlay.h:60
OverlayContext::main_rgba_map
uint8_t main_rgba_map[4]
Definition: vf_overlay.h:59