FFmpeg
vf_overlay.h
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2  * This file is part of FFmpeg.
3  *
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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:38
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:168
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
s
#define s(width, name)
Definition: cbs_vp9.c:256
OverlayContext::alpha_format
int alpha_format
Definition: vf_overlay.h:65
OVERLAY_FORMAT_YUV422
@ OVERLAY_FORMAT_YUV422
Definition: vf_overlay.h:45
format
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample format(the sample packing is implied by the sample format) and sample rate. The lists are not just lists
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
var_name
var_name
Definition: noise_bsf.c:46
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:66
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:408
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:69
OverlayContext::overlay_pix_step
int overlay_pix_step[4]
steps per pixel for each plane of the overlay
Definition: vf_overlay.h:71
d
d
Definition: ffmpeg_filter.c:155
int
int
Definition: ffmpeg_filter.c:155
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