vf_zoompan.c File Reference

#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "filters.h"
#include "video.h"
#include "libswscale/swscale.h"

Go to the source code of this file.

Data Structures
struct	ZPContext

Macros
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Enumerations
enum	var_name {   VAR_IN_W , VAR_IW , VAR_IN_H , VAR_IH ,   VAR_OUT_W , VAR_OW , VAR_OUT_H , VAR_OH ,   VAR_IN , VAR_ON , VAR_DURATION , VAR_PDURATION ,   VAR_IN_TIME , VAR_IT , VAR_TIME , VAR_OUT_TIME ,   VAR_OT , VAR_FRAME , VAR_ZOOM , VAR_PZOOM ,   VAR_X , VAR_PX , VAR_Y , VAR_PY ,   VAR_A , VAR_SAR , VAR_DAR , VAR_HSUB ,   VAR_VSUB , VARS_NB }

Functions
	AVFILTER_DEFINE_CLASS (zoompan)
static av_cold int	init (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static int	output_single_frame (AVFilterContext *ctx, AVFrame *in, double *var_values, int i, double *zoom, double *dx, double *dy)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const char *const	var_names []
static const AVOption	zoompan_options []
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	outputs []
const FFFilter	ff_vf_zoompan

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(ZPContext, x)

Definition at line 101 of file vf_zoompan.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 102 of file vf_zoompan.c.

Enumeration Type Documentation

var_name

enum var_name

Enumerator
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_IN
VAR_ON
VAR_DURATION
VAR_PDURATION
VAR_IN_TIME
VAR_IT
VAR_TIME
VAR_OUT_TIME
VAR_OT
VAR_FRAME
VAR_ZOOM
VAR_PZOOM
VAR_X
VAR_PX
VAR_Y
VAR_PY
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VARS_NB

Definition at line 53 of file vf_zoompan.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

zoompan

)

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 116 of file vf_zoompan.c.

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 124 of file vf_zoompan.c.

output_single_frame()

static int output_single_frame ( AVFilterContext * ctx, AVFrame * in, double * var_values, int i, double * zoom, double * dx, double * dy )

static

Definition at line 153 of file vf_zoompan.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 259 of file vf_zoompan.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 344 of file vf_zoompan.c.

Variable Documentation

var_names

const char* const var_names[]

static

Initial value:

= {
    "in_w",   "iw",
    "in_h",   "ih",
    "out_w",  "ow",
    "out_h",  "oh",
    "in",
    "on",
    "duration",
    "pduration",
    "in_time", "it",
    "out_time", "time", "ot",
    "frame",
    "zoom",
    "pzoom",
    "x", "px",
    "y", "py",
    "a",
    "sar",
    "dar",
    "hsub",
    "vsub",
    NULL
}

Definition at line 29 of file vf_zoompan.c.

zoompan_options

const AVOption zoompan_options[]

static

Initial value:

= {
    { "zoom", "set the zoom expression", OFFSET(zoom_expr_str), AV_OPT_TYPE_STRING, {.str = "1" }, .flags = FLAGS },
    { "z", "set the zoom expression", OFFSET(zoom_expr_str), AV_OPT_TYPE_STRING, {.str = "1" }, .flags = FLAGS },
    { "x", "set the x expression", OFFSET(x_expr_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags = FLAGS },
    { "y", "set the y expression", OFFSET(y_expr_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags = FLAGS },
    { "d", "set the duration expression", OFFSET(duration_expr_str), AV_OPT_TYPE_STRING, {.str="90"}, .flags = FLAGS },
    { "s", "set the output image size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, .flags = FLAGS },
    { "fps", "set the output framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 0, INT_MAX, .flags = FLAGS },
    { NULL }
}

Definition at line 103 of file vf_zoompan.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV422P,
    AV_PIX_FMT_YUV420P,  AV_PIX_FMT_YUV411P,
    AV_PIX_FMT_YUV410P,  AV_PIX_FMT_YUV440P,
    AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P,
    AV_PIX_FMT_YUVA420P,
    AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
    AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
    AV_PIX_FMT_YUVJ411P,
    AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
    AV_PIX_FMT_GRAY8,
    AV_PIX_FMT_NONE
}

Definition at line 330 of file vf_zoompan.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 356 of file vf_zoompan.c.

ff_vf_zoompan

const FFFilter ff_vf_zoompan

Initial value:

= {
    .p.name        = "zoompan",
    .p.description = NULL_IF_CONFIG_SMALL("Apply Zoom & Pan effect."),
    .p.priv_class  = &zoompan_class,
    .priv_size     = sizeof(ZPContext),
    .init          = init,
    .uninit        = uninit,
    .activate      = activate,
    FILTER_INPUTS(ff_video_default_filterpad),
    FILTER_OUTPUTS(outputs),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
}

Definition at line 364 of file vf_zoompan.c.