libavfilter/vf_alphamerge.c File Reference

copy an alpha component from another video's luma More...

#include <string.h>
#include "libavutil/pixfmt.h"
#include "avfilter.h"
#include "bufferqueue.h"
#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	AlphaMergeContext
Enumerations
enum	{ Y, U, V, A }
Functions
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_input_main (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	start_frame (AVFilterLink *inlink, AVFilterBufferRef *picref)
static int	draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
static void	draw_frame (AVFilterContext *ctx, AVFilterBufferRef *main_buf, AVFilterBufferRef *alpha_buf)
static int	end_frame (AVFilterLink *inlink)
static int	request_frame (AVFilterLink *outlink)
Variables
AVFilter	avfilter_vf_alphamerge

---

Detailed Description

copy an alpha component from another video's luma

Definition in file vf_alphamerge.c.

---

Enumeration Type Documentation

anonymous enum

Enumerator:

Y
U
V
A

Definition at line 36 of file vf_alphamerge.c.

---

Function Documentation

static int config_input_main

(

AVFilterLink *

inlink

)

[static]

Definition at line 69 of file vf_alphamerge.c.

static int config_output

(

AVFilterLink *

outlink

)

[static]

Definition at line 77 of file vf_alphamerge.c.

static void draw_frame	(	AVFilterContext *	ctx,
		AVFilterBufferRef *	main_buf,
		AVFilterBufferRef *	alpha_buf
	)			[static]

Definition at line 101 of file vf_alphamerge.c.

Referenced by end_frame().

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

Definition at line 99 of file vf_alphamerge.c.

static int end_frame

(

AVFilterLink *

inlink

)

[static]

Definition at line 133 of file vf_alphamerge.c.

static int query_formats

(

AVFilterContext *

ctx

)

[static]

Definition at line 53 of file vf_alphamerge.c.

static int request_frame

(

AVFilterLink *

outlink

)

[static]

Definition at line 163 of file vf_alphamerge.c.

static int start_frame	(	AVFilterLink *	inlink,
		AVFilterBufferRef *	picref
	)			[static]

Definition at line 98 of file vf_alphamerge.c.

static av_cold void uninit

(

AVFilterContext *

ctx

)

[static]

Definition at line 46 of file vf_alphamerge.c.

---

Variable Documentation

AVFilter avfilter_vf_alphamerge

Definition at line 179 of file vf_alphamerge.c.