vf_quirc.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "video.h"
#include <quirc.h>

Go to the source code of this file.

Data Structures
struct	QuircContext

Macros
#define	SET_CORNER_METADATA(key_, value_)

Functions
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 *frame)

Variables
static enum AVPixelFormat	pix_fmts []
static const AVClass	quirc_class
static const AVFilterPad	inputs []
const FFFilter	ff_vf_quirc

Macro Definition Documentation

SET_CORNER_METADATA

#define SET_CORNER_METADATA	(		key_,
			value_ )

Value:

                snprintf(metadata_key, sizeof(metadata_key)-1,          \
                         "lavfi.quirc.%d.corner.%d." #key_, i, j);      \
                av_dict_set_int(metadata, metadata_key, value_, 0)

Referenced by filter_frame().

Function Documentation

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 42 of file vf_quirc.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 54 of file vf_quirc.c.

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 61 of file vf_quirc.c.

filter_frame()

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

static

Definition at line 77 of file vf_quirc.c.

Variable Documentation

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_GRAY8,
    AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
    AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
    AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_NV12, AV_PIX_FMT_NV21,
    AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
    AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
    AV_PIX_FMT_YUVJ440P,
    AV_PIX_FMT_NONE
}

Definition at line 152 of file vf_quirc.c.

quirc_class

const AVClass quirc_class

static

Initial value:

= {
    .class_name = "quirc",
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_FILTER
}

Definition at line 164 of file vf_quirc.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 170 of file vf_quirc.c.

ff_vf_quirc

const FFFilter ff_vf_quirc

Initial value:

= {
    .p.name        = "quirc",
    .p.description = NULL_IF_CONFIG_SMALL("Decode and show QR codes content."),
    .p.priv_class  = &quirc_class,
    .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
                     AVFILTER_FLAG_METADATA_ONLY,
    .priv_size   = sizeof(QuircContext),
    .init        = init,
    .uninit      = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
}

Definition at line 179 of file vf_quirc.c.