vf_tinterlace.c File Reference

temporal field interlace filter, ported from MPlayer/libmpcodecs More...

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

Include dependency graph for vf_tinterlace.c:

Go to the source code of this file.

Data Structures
struct	TInterlaceContext

Macros
#define	OFFSET(x)   offsetof(TInterlaceContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	TINTERLACE_FLAG_VLPF   01
#define	FULL_SCALE_YUVJ_FORMATS   AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P
#define	FIELD_UPPER   0
#define	FIELD_LOWER   1
#define	FIELD_UPPER_AND_LOWER   2

Enumerations
enum	TInterlaceMode {   MODE_MERGE = 0, MODE_DROP_EVEN, MODE_DROP_ODD, MODE_PAD,   MODE_INTERLEAVE_TOP, MODE_INTERLEAVE_BOTTOM, MODE_INTERLACEX2, MODE_NB }

Functions
	AVFILTER_DEFINE_CLASS (tinterlace)
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 (uint8_t *dst[4], int dst_linesize[4], const uint8_t *src[4], int src_linesize[4], enum AVPixelFormat format, int w, int src_h, int src_field, int interleave, int dst_field, int flags)
	Copy picture field from src to dst. More...
static int	filter_frame (AVFilterLink *inlink, AVFrame *picref)
static int	request_frame (AVFilterLink *outlink)

Variables
static const AVOption	tinterlace_options []
static enum AVPixelFormat	full_scale_yuvj_pix_fmts []
static const AVFilterPad	tinterlace_inputs []
static const AVFilterPad	tinterlace_outputs []
AVFilter	avfilter_vf_tinterlace

Detailed Description

temporal field interlace filter, ported from MPlayer/libmpcodecs

Definition in file vf_tinterlace.c.

Macro Definition Documentation

#define FIELD_LOWER   1

Definition at line 153 of file vf_tinterlace.c.

Referenced by copy_picture_field(), and filter_frame().

#define FIELD_UPPER   0

Definition at line 152 of file vf_tinterlace.c.

Referenced by filter_frame().

#define FIELD_UPPER_AND_LOWER   2

Definition at line 154 of file vf_tinterlace.c.

Referenced by copy_picture_field(), and filter_frame().

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 58 of file vf_tinterlace.c.

#define FULL_SCALE_YUVJ_FORMATS   AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P

Definition at line 80 of file vf_tinterlace.c.

Referenced by query_formats().

#define OFFSET

(

x

)

offsetof(TInterlaceContext, x)

Definition at line 57 of file vf_tinterlace.c.

#define TINTERLACE_FLAG_VLPF   01

Definition at line 59 of file vf_tinterlace.c.

Referenced by config_out_props(), and copy_picture_field().

Enumeration Type Documentation

enum TInterlaceMode

Enumerator
MODE_MERGE
MODE_DROP_EVEN
MODE_DROP_ODD
MODE_PAD
MODE_INTERLEAVE_TOP
MODE_INTERLEAVE_BOTTOM
MODE_INTERLACEX2
MODE_NB

Definition at line 34 of file vf_tinterlace.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

tinterlace

)

static int config_out_props ( AVFilterLink *  outlink )

static

Definition at line 109 of file vf_tinterlace.c.

static void copy_picture_field ( uint8_t *  dst[4], int  dst_linesize[4], const uint8_t *  src[4], int  src_linesize[4], enum AVPixelFormat  format, int  w, int  src_h, int  src_field, int  interleave, int  dst_field, int  flags  )

inlinestatic

Copy picture field from src to dst.

Parameters

src_field	copy from upper, lower field or both
interleave	leave a padding line between each copied line
dst_field	copy to upper or lower field, only meaningful when interleave is selected
flags	context flags

Definition at line 166 of file vf_tinterlace.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  picref  )

static

Definition at line 218 of file vf_tinterlace.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 87 of file vf_tinterlace.c.

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 354 of file vf_tinterlace.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 100 of file vf_tinterlace.c.

Variable Documentation

AVFilter avfilter_vf_tinterlace

Initial value:

= {
    .name          = "tinterlace",
    .description   = NULL_IF_CONFIG_SMALL("Perform temporal field interlacing."),
    .priv_size     = sizeof(TInterlaceContext),
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = tinterlace_inputs,
    .outputs       = tinterlace_outputs,
    .priv_class    = &tinterlace_class,
}

Definition at line 388 of file vf_tinterlace.c.

enum AVPixelFormat full_scale_yuvj_pix_fmts[]

static

Initial value:

= {
    FULL_SCALE_YUVJ_FORMATS, AV_PIX_FMT_NONE
}

Definition at line 83 of file vf_tinterlace.c.

Referenced by config_out_props().

const AVFilterPad tinterlace_inputs[]

static

Initial value:

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

Definition at line 369 of file vf_tinterlace.c.

const AVOption tinterlace_options[]

static

Initial value:

= {
    {"mode",              "select interlace mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_MERGE}, 0, MODE_NB-1, FLAGS, "mode"},
    {"merge",             "merge fields",                                 0, AV_OPT_TYPE_CONST, {.i64=MODE_MERGE},             INT_MIN, INT_MAX, FLAGS, "mode"},
    {"drop_even",         "drop even fields",                             0, AV_OPT_TYPE_CONST, {.i64=MODE_DROP_EVEN},         INT_MIN, INT_MAX, FLAGS, "mode"},
    {"drop_odd",          "drop odd fields",                              0, AV_OPT_TYPE_CONST, {.i64=MODE_DROP_ODD},          INT_MIN, INT_MAX, FLAGS, "mode"},
    {"pad",               "pad alternate lines with black",               0, AV_OPT_TYPE_CONST, {.i64=MODE_PAD},               INT_MIN, INT_MAX, FLAGS, "mode"},
    {"interleave_top",    "interleave top and bottom fields",             0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE_TOP},    INT_MIN, INT_MAX, FLAGS, "mode"},
    {"interleave_bottom", "interleave bottom and top fields",             0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE_BOTTOM}, INT_MIN, INT_MAX, FLAGS, "mode"},
    {"interlacex2",       "interlace fields from two consecutive frames", 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLACEX2},       INT_MIN, INT_MAX, FLAGS, "mode"},

    {"flags",             "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, INT_MAX, 0, "flags" },
    {"low_pass_filter",   "enable vertical low-pass filter",              0, AV_OPT_TYPE_CONST, {.i64 = TINTERLACE_FLAG_VLPF}, INT_MIN, INT_MAX, FLAGS, "flags" },
    {"vlpf",              "enable vertical low-pass filter",              0, AV_OPT_TYPE_CONST, {.i64 = TINTERLACE_FLAG_VLPF}, INT_MIN, INT_MAX, FLAGS, "flags" },

    {NULL}
}

Definition at line 61 of file vf_tinterlace.c.

const AVFilterPad tinterlace_outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_out_props,
        .request_frame = request_frame,
    },
    { NULL }
}

Definition at line 378 of file vf_tinterlace.c.