libavfilter/vf_overlay.c File Reference

overlay one video on top of another More...

#include "avfilter.h"
#include "libavutil/eval.h"
#include "libavutil/avstring.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	OverlayContext
Defines
#define	MAIN   0
#define	OVERLAY   1
Enumerations
enum	var_name {   VAR_E, VAR_PHI, VAR_PI, VAR_IN_W,   VAR_IW, VAR_IN_H, VAR_IH, VAR_OUT_W,   VAR_OW, VAR_OUT_H, VAR_OH, VAR_X,   VAR_Y, VAR_N, VAR_POS, VAR_T,   VAR_VARS_NB, VAR_E, VAR_PHI, VAR_PI,   VAR_MAIN_W, VAR_MW, VAR_MAIN_H, VAR_MH,   VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H, VAR_OH,   VAR_VARS_NB, VAR_PI, VAR_PHI, VAR_E,   VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH,   VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH,   VAR_X, VAR_Y, VAR_A, VAR_HSUB,   VAR_VSUB, VARS_NB, VAR_PI, VAR_PHI,   VAR_E, VAR_IN_W, VAR_IW, VAR_IN_H,   VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,   VAR_OH, VAR_A, VAR_HSUB, VAR_VSUB,   VARS_NB, VAR_E, VAR_INTERLACED, VAR_N,   VAR_PHI, VAR_PI, VAR_POS, VAR_PREV_INPTS,   VAR_PREV_OUTPTS, VAR_PTS, VAR_STARTPTS, VAR_TB,   VAR_VARS_NB, VAR_E, VAR_PHI, VAR_PI,   VAR_AVTB, VAR_INTB, VAR_VARS_NB, VAR_E,   VAR_PHI, VAR_PI, VAR_AVTB, VAR_VARS_NB }
Functions
static av_cold int	init (AVFilterContext *ctx, const char *args, void *opaque)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_input_main (AVFilterLink *inlink)
static int	config_input_overlay (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static AVFilterBufferRef *	get_video_buffer (AVFilterLink *link, int perms, int w, int h)
static void	start_frame (AVFilterLink *inlink, AVFilterBufferRef *inpicref)
static void	start_frame_overlay (AVFilterLink *inlink, AVFilterBufferRef *inpicref)
static void	blend_slice (AVFilterContext *ctx, AVFilterBufferRef *dst, AVFilterBufferRef *src, int x, int y, int w, int h, int slice_y, int slice_w, int slice_h)
static void	draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
static void	end_frame (AVFilterLink *inlink)
static void	null_draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
static void	null_end_frame (AVFilterLink *inlink)
Variables
static const char *	var_names []
AVFilter	avfilter_vf_overlay

---

Detailed Description

overlay one video on top of another

Definition in file vf_overlay.c.

---

Define Documentation

#define MAIN   0

Definition at line 57 of file vf_overlay.c.

Referenced by config_input_overlay(), config_output(), Faac_encode_init(), query_formats(), and start_frame().

#define OVERLAY   1

Definition at line 58 of file vf_overlay.c.

Referenced by avfilter_register_all(), config_input_overlay(), config_output(), query_formats(), start_frame(), and start_frame_overlay().

---

Enumeration Type Documentation

enum var_name

Enumerator:

VAR_E
VAR_PHI
VAR_PI
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_X
VAR_Y
VAR_N
VAR_POS
VAR_T
VAR_VARS_NB
VAR_E
VAR_PHI
VAR_PI
VAR_MAIN_W
VAR_MW
VAR_MAIN_H
VAR_MH
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_VARS_NB
VAR_PI
VAR_PHI
VAR_E
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_X
VAR_Y
VAR_A
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_PI
VAR_PHI
VAR_E
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_E
VAR_INTERLACED
VAR_N
VAR_PHI
VAR_PI
VAR_POS
VAR_PREV_INPTS
VAR_PREV_OUTPTS
VAR_PTS
VAR_STARTPTS
VAR_TB
VAR_VARS_NB
VAR_E
VAR_PHI
VAR_PI
VAR_AVTB
VAR_INTB
VAR_VARS_NB
VAR_E
VAR_PHI
VAR_PI
VAR_AVTB
VAR_VARS_NB

Definition at line 46 of file vf_overlay.c.

---

Function Documentation

static void blend_slice	(	AVFilterContext *	ctx,
		AVFilterBufferRef *	dst,
		AVFilterBufferRef *	src,
		int	x,
		int	y,
		int	w,
		int	h,
		int	slice_y,
		int	slice_w,
		int	slice_h
	)		[static]

Definition at line 242 of file vf_overlay.c.

Referenced by draw_slice().

static int config_input_main

(

AVFilterLink *

inlink

)

[static]

Definition at line 106 of file vf_overlay.c.

static int config_input_overlay

(

AVFilterLink *

inlink

)

[static]

Definition at line 118 of file vf_overlay.c.

static int config_output

(

AVFilterLink *

outlink

)

[static]

Definition at line 178 of file vf_overlay.c.

static void draw_slice	(	AVFilterLink *	inlink,
		int	y,
		int	h,
		int	slice_dir
	)		[static]

Definition at line 320 of file vf_overlay.c.

static void end_frame

(

AVFilterLink *

inlink

)

[static]

Definition at line 337 of file vf_overlay.c.

static AVFilterBufferRef* get_video_buffer	(	AVFilterLink *	link,
		int	perms,
		int	w,
		int	h
	)		[static]

Definition at line 203 of file vf_overlay.c.

static av_cold int init	(	AVFilterContext *	ctx,
		const char *	args,
		void *	opaque
	)		[static]

Definition at line 71 of file vf_overlay.c.

static void null_draw_slice	(	AVFilterLink *	inlink,
		int	y,
		int	h,
		int	slice_dir
	)		[static]

Definition at line 343 of file vf_overlay.c.

static void null_end_frame

(

AVFilterLink *

inlink

)

[static]

Definition at line 345 of file vf_overlay.c.

static int query_formats

(

AVFilterContext *

ctx

)

[static]

Definition at line 92 of file vf_overlay.c.

static void start_frame	(	AVFilterLink *	inlink,
		AVFilterBufferRef *	inpicref
	)		[static]

Definition at line 208 of file vf_overlay.c.

static void start_frame_overlay	(	AVFilterLink *	inlink,
		AVFilterBufferRef *	inpicref
	)		[static]

Definition at line 232 of file vf_overlay.c.

static av_cold void uninit

(

AVFilterContext *

ctx

)

[static]

Definition at line 84 of file vf_overlay.c.

---

Variable Documentation

AVFilter avfilter_vf_overlay

Definition at line 347 of file vf_overlay.c.

const char* var_names[] [static]

Initial value:

 {
    "E",
    "PHI",
    "PI",
    "main_w",    "W", 
    "main_h",    "H", 
    "overlay_w", "w", 
    "overlay_h", "h", 
    NULL
}

Definition at line 35 of file vf_overlay.c.

Referenced by config_input_overlay().