OverlayContext Struct Reference

Data Fields
const AVClass *	class
int	x
int	y
	position of overlaid picture More...
uint8_t	main_is_packed_rgb
uint8_t	main_rgba_map [4]
uint8_t	main_has_alpha
uint8_t	overlay_is_packed_rgb
uint8_t	overlay_rgba_map [4]
uint8_t	overlay_has_alpha
int	format
	OverlayFormat. More...
int	alpha_format
int	eval_mode
	EvalMode. More...
FFFrameSync	fs
int	main_pix_step [4]
	steps per pixel for each plane of the main output More...
int	overlay_pix_step [4]
	steps per pixel for each plane of the overlay More...
int	hsub
int	vsub
	chroma subsampling values More...
const AVPixFmtDescriptor *	main_desc
	format descriptor for main input More...
double	var_values [VAR_VARS_NB]
char *	x_expr
char *	y_expr
AVExpr *	x_pexpr
AVExpr *	y_pexpr
void(*	blend_image )(AVFilterContext *ctx, AVFrame *dst, const AVFrame *src, int x, int y)

Detailed Description

Definition at line 101 of file vf_overlay.c.

Field Documentation

class

const AVClass* OverlayContext::class

Definition at line 102 of file vf_overlay.c.

x

int OverlayContext::x

Definition at line 103 of file vf_overlay.c.

Referenced by config_input_overlay(), do_blend(), eval_expr(), and process_command().

y

int OverlayContext::y

position of overlaid picture

Definition at line 103 of file vf_overlay.c.

Referenced by config_input_overlay(), do_blend(), eval_expr(), and process_command().

main_is_packed_rgb

uint8_t OverlayContext::main_is_packed_rgb

Definition at line 105 of file vf_overlay.c.

Referenced by config_input_main().

main_rgba_map

uint8_t OverlayContext::main_rgba_map[4]

Definition at line 106 of file vf_overlay.c.

Referenced by blend_image_packed_rgb(), and config_input_main().

main_has_alpha

uint8_t OverlayContext::main_has_alpha

Definition at line 107 of file vf_overlay.c.

Referenced by config_input_main().

overlay_is_packed_rgb

uint8_t OverlayContext::overlay_is_packed_rgb

Definition at line 108 of file vf_overlay.c.

Referenced by config_input_overlay().

overlay_rgba_map

uint8_t OverlayContext::overlay_rgba_map[4]

Definition at line 109 of file vf_overlay.c.

Referenced by blend_image_packed_rgb(), and config_input_overlay().

overlay_has_alpha

uint8_t OverlayContext::overlay_has_alpha

Definition at line 110 of file vf_overlay.c.

Referenced by config_input_overlay().

format

int OverlayContext::format

OverlayFormat.

Definition at line 111 of file vf_overlay.c.

Referenced by config_input_main(), and query_formats().

alpha_format

int OverlayContext::alpha_format

Definition at line 112 of file vf_overlay.c.

Referenced by config_input_main().

eval_mode

int OverlayContext::eval_mode

EvalMode.

Definition at line 113 of file vf_overlay.c.

Referenced by config_input_overlay(), do_blend(), and process_command().

fs

FFFrameSync OverlayContext::fs

Definition at line 115 of file vf_overlay.c.

Referenced by activate(), config_output(), init(), and uninit().

main_pix_step

int OverlayContext::main_pix_step[4]

steps per pixel for each plane of the main output

Definition at line 117 of file vf_overlay.c.

Referenced by blend_image_packed_rgb(), and config_input_main().

overlay_pix_step

int OverlayContext::overlay_pix_step[4]

steps per pixel for each plane of the overlay

Definition at line 118 of file vf_overlay.c.

Referenced by blend_image_packed_rgb(), and config_input_overlay().

hsub

int OverlayContext::hsub

Definition at line 119 of file vf_overlay.c.

Referenced by blend_plane(), config_input_main(), and eval_expr().

vsub

int OverlayContext::vsub

chroma subsampling values

Definition at line 119 of file vf_overlay.c.

Referenced by blend_plane(), config_input_main(), and eval_expr().

main_desc

const AVPixFmtDescriptor* OverlayContext::main_desc

format descriptor for main input

Definition at line 120 of file vf_overlay.c.

Referenced by blend_image_planar_rgb(), blend_image_yuv(), and config_input_main().

var_values

double OverlayContext::var_values[VAR_VARS_NB]

Definition at line 122 of file vf_overlay.c.

Referenced by config_input_overlay(), do_blend(), eval_expr(), and process_command().

x_expr

char* OverlayContext::x_expr

Definition at line 123 of file vf_overlay.c.

Referenced by config_input_overlay().

y_expr

char * OverlayContext::y_expr

Definition at line 123 of file vf_overlay.c.

Referenced by config_input_overlay().

x_pexpr

AVExpr* OverlayContext::x_pexpr

Definition at line 125 of file vf_overlay.c.

Referenced by config_input_overlay(), eval_expr(), process_command(), and uninit().

y_pexpr

AVExpr * OverlayContext::y_pexpr

Definition at line 125 of file vf_overlay.c.

Referenced by config_input_overlay(), eval_expr(), process_command(), and uninit().

blend_image

void(* OverlayContext::blend_image) (AVFilterContext *ctx, AVFrame *dst, const AVFrame *src, int x, int y)

Definition at line 127 of file vf_overlay.c.

Referenced by config_input_main(), and do_blend().

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The documentation for this struct was generated from the following file:

• libavfilter/vf_overlay.c