vf_vidstabdetect.c File Reference

#include <vid.stab/libvidstab.h>
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "avfilter.h"
#include "internal.h"
#include "vidstabutils.h"

Go to the source code of this file.

Data Structures
struct	StabData

Macros
#define	DEFAULT_RESULT_NAME   "transforms.trf"
#define	OFFSET(x)   offsetof(StabData, x)
#define	OFFSETC(x)   (offsetof(StabData, conf)+offsetof(VSMotionDetectConfig, x))
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Functions
	AVFILTER_DEFINE_CLASS (vidstabdetect)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)

Variables
static const AVOption	vidstabdetect_options []
static const AVFilterPad	avfilter_vf_vidstabdetect_inputs []
static const AVFilterPad	avfilter_vf_vidstabdetect_outputs []
const AVFilter	ff_vf_vidstabdetect

Macro Definition Documentation

DEFAULT_RESULT_NAME

#define DEFAULT_RESULT_NAME   "transforms.trf"

Definition at line 21 of file vf_vidstabdetect.c.

OFFSET

#define OFFSET

(

x

)

offsetof(StabData, x)

Definition at line 44 of file vf_vidstabdetect.c.

OFFSETC

#define OFFSETC

(

x

)

(offsetof(StabData, conf)+offsetof(VSMotionDetectConfig, x))

Definition at line 45 of file vf_vidstabdetect.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 46 of file vf_vidstabdetect.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

vidstabdetect

)

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 63 of file vf_vidstabdetect.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 72 of file vf_vidstabdetect.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 85 of file vf_vidstabdetect.c.

filter_frame()

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

static

Definition at line 142 of file vf_vidstabdetect.c.

Variable Documentation

vidstabdetect_options

const AVOption vidstabdetect_options[]

static

Initial value:

= {
    {"result",      "path to the file used to write the transforms",                 OFFSET(result),             AV_OPT_TYPE_STRING, {.str = DEFAULT_RESULT_NAME}, .flags = FLAGS},
    {"shakiness",   "how shaky is the video and how quick is the camera?"
                    " 1: little (fast) 10: very strong/quick (slow)",                OFFSETC(shakiness),         AV_OPT_TYPE_INT,    {.i64 = 5},      1,  10, FLAGS},
    {"accuracy",    "(>=shakiness) 1: low 15: high (slow)",                          OFFSETC(accuracy),          AV_OPT_TYPE_INT,    {.i64 = 15},     1,  15, FLAGS},
    {"stepsize",    "region around minimum is scanned with 1 pixel resolution",      OFFSETC(stepSize),          AV_OPT_TYPE_INT,    {.i64 = 6},      1,  32, FLAGS},
    {"mincontrast", "below this contrast a field is discarded (0-1)",                OFFSETC(contrastThreshold), AV_OPT_TYPE_DOUBLE, {.dbl = 0.25}, 0.0, 1.0, FLAGS},
    {"show",        "0: draw nothing; 1,2: show fields and transforms",              OFFSETC(show),              AV_OPT_TYPE_INT,    {.i64 = 0},      0,   2, FLAGS},
    {"tripod",      "virtual tripod mode (if >0): motion is compared to a reference"
                    " reference frame (frame # is the value)",                       OFFSETC(virtualTripod),     AV_OPT_TYPE_INT,    {.i64 = 0}, 0, INT_MAX, FLAGS},
    {NULL}
}

Definition at line 48 of file vf_vidstabdetect.c.

avfilter_vf_vidstabdetect_inputs

const AVFilterPad avfilter_vf_vidstabdetect_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_input,
    },
}

Definition at line 175 of file vf_vidstabdetect.c.

avfilter_vf_vidstabdetect_outputs

const AVFilterPad avfilter_vf_vidstabdetect_outputs[]

static

Initial value:

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

Definition at line 184 of file vf_vidstabdetect.c.

ff_vf_vidstabdetect

const AVFilter ff_vf_vidstabdetect

Initial value:

= {
    .name          = "vidstabdetect",
    .description   = NULL_IF_CONFIG_SMALL("Extract relative transformations, "
                                          "pass 1 of 2 for stabilization "
                                          "(see vidstabtransform for pass 2)."),
    .priv_size     = sizeof(StabData),
    .init          = init,
    .uninit        = uninit,
    .flags         = AVFILTER_FLAG_METADATA_ONLY,
    FILTER_INPUTS(avfilter_vf_vidstabdetect_inputs),
    FILTER_OUTPUTS(avfilter_vf_vidstabdetect_outputs),
    FILTER_PIXFMTS_ARRAY(ff_vidstab_pix_fmts),
    .priv_class    = &vidstabdetect_class,
}

Definition at line 191 of file vf_vidstabdetect.c.