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

Initial value:

= {
    AV_PIX_FMT_YUV420P,  AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV410P,  AV_PIX_FMT_YUVA420P,
    AV_PIX_FMT_GRAY8,    AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
    AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_NONE
}

Definition at line 72 of file vf_interlace.c.

Referenced by query_formats().

const AVFilterPad inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
    },
    { NULL }
}

Definition at line 206 of file vf_interlace.c.

const AVFilterPad outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .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),
    .query_formats = query_formats,

    .inputs        = inputs,
    .outputs       = outputs,
}

Definition at line 224 of file vf_interlace.c.