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vf_interlace.c File Reference

progressive to interlaced content filter, inspired by heavy debugging of tinterlace filter More...

#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/avassert.h"
#include "formats.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  InterlaceContext
 

Macros

#define OFFSET(x)   offsetof(InterlaceContext, x)
 
#define V   AV_OPT_FLAG_VIDEO_PARAM
 

Enumerations

enum  ScanMode { MODE_TFF = 0, MODE_BFF = 1 }
 
enum  FieldType { FIELD_TYPE_TOP = 0, FIELD_TYPE_BOTTOM, FIELD_UPPER = 0, FIELD_LOWER = 1 }
 

Functions

 AVFILTER_DEFINE_CLASS (interlace)
 
static int query_formats (AVFilterContext *ctx)
 
static av_cold void uninit (AVFilterContext *ctx)
 
static int config_out_props (AVFilterLink *outlink)
 
static void copy_picture_field (AVFrame *src_frame, AVFrame *dst_frame, AVFilterLink *inlink, enum FieldType field_type, int lowpass)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *buf)
 

Variables

static const AVOption interlace_options []
 
static enum AVPixelFormat formats_supported []
 
static const AVFilterPad inputs []
 
static const AVFilterPad outputs []
 
AVFilter avfilter_vf_interlace
 

Detailed Description

progressive to interlaced content filter, inspired by heavy debugging of tinterlace filter

Definition in file vf_interlace.c.

Macro Definition Documentation

#define OFFSET (   x)    offsetof(InterlaceContext, x)

Definition at line 56 of file vf_interlace.c.

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 57 of file vf_interlace.c.

Enumeration Type Documentation

enum ScanMode
Enumerator:
MODE_TFF 
MODE_BFF 

Definition at line 39 of file vf_interlace.c.

enum FieldType
Enumerator:
FIELD_TYPE_TOP 
FIELD_TYPE_BOTTOM 
FIELD_UPPER 
FIELD_LOWER 

Definition at line 44 of file vf_interlace.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( interlace  )
static int query_formats ( AVFilterContext ctx)
static

Definition at line 79 of file vf_interlace.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 85 of file vf_interlace.c.

static int config_out_props ( AVFilterLink outlink)
static

Definition at line 93 of file vf_interlace.c.

static void copy_picture_field ( AVFrame src_frame,
AVFrame dst_frame,
AVFilterLink inlink,
enum FieldType  field_type,
int  lowpass 
)
static

Definition at line 119 of file vf_interlace.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink inlink,
AVFrame buf 
)
static

Definition at line 167 of file vf_interlace.c.

Variable Documentation

const AVOption interlace_options[]
static
Initial value:
= {
{ "scan", "scanning mode", OFFSET(scan),
AV_OPT_TYPE_INT, {.i64 = MODE_TFF }, 0, 1, .flags = V, .unit = "scan" },
{ "tff", "top field first", 0,
AV_OPT_TYPE_CONST, {.i64 = MODE_TFF }, INT_MIN, INT_MAX, .flags = V, .unit = "scan" },
{ "bff", "bottom field first", 0,
AV_OPT_TYPE_CONST, {.i64 = MODE_BFF }, INT_MIN, INT_MAX, .flags = V, .unit = "scan" },
{ "lowpass", "enable vertical low-pass filter", OFFSET(lowpass),
AV_OPT_TYPE_INT, {.i64 = 1 }, 0, 1, .flags = V },
{ NULL }
}

Definition at line 58 of file vf_interlace.c.

enum AVPixelFormat formats_supported[]
static
const AVFilterPad inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
},
{ NULL }
}

Definition at line 206 of file vf_interlace.c.

const AVFilterPad outputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_out_props,
},
{ NULL }
}

Definition at line 215 of file vf_interlace.c.

AVFilter avfilter_vf_interlace
Initial value:
= {
.name = "interlace",
.description = NULL_IF_CONFIG_SMALL("Convert progressive video into interlaced."),
.uninit = uninit,
.priv_class = &interlace_class,
.priv_size = sizeof(InterlaceContext),
}

Definition at line 224 of file vf_interlace.c.