vf_ocr.c File Reference

#include <tesseract/capi.h>
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	OCRContext

Macros
#define	OFFSET(x)   offsetof(OCRContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

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

Variables
static const AVOption	ocr_options []
static const AVFilterPad	ocr_inputs []
static const AVFilterPad	ocr_outputs []
AVFilter	ff_vf_ocr

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(OCRContext, x)

Definition at line 40 of file vf_ocr.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 41 of file vf_ocr.c.

Function Documentation

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 51 of file vf_ocr.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 76 of file vf_ocr.c.

filter_frame()

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

static

Definition at line 96 of file vf_ocr.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 112 of file vf_ocr.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

ocr

)

Referenced by uninit().

Variable Documentation

ocr_options

const AVOption ocr_options[]

static

Initial value:

= {
    { "datapath",  "set datapath",            OFFSET(datapath),  AV_OPT_TYPE_STRING, {.str=NULL},  0, 0, FLAGS },
    { "language",  "set language",            OFFSET(language),  AV_OPT_TYPE_STRING, {.str="eng"}, 0, 0, FLAGS },
    { "whitelist", "set character whitelist", OFFSET(whitelist), AV_OPT_TYPE_STRING, {.str="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.:;,-+_!?\"'[]{}()<>|/\\=*&%$#@!~"}, 0, 0, FLAGS },
    { "blacklist", "set character blacklist", OFFSET(blacklist), AV_OPT_TYPE_STRING, {.str=""},    0, 0, FLAGS },
    { NULL }
}

Definition at line 43 of file vf_ocr.c.

ocr_inputs

const AVFilterPad ocr_inputs[]

static

Initial value:

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

Definition at line 122 of file vf_ocr.c.

ocr_outputs

const AVFilterPad ocr_outputs[]

static

Initial value:

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

Definition at line 131 of file vf_ocr.c.

ff_vf_ocr

AVFilter ff_vf_ocr

Initial value:

= {
    .name          = "ocr",
    .description   = NULL_IF_CONFIG_SMALL("Optical Character Recognition."),
    .priv_size     = sizeof(OCRContext),
    .priv_class    = &ocr_class,
    .query_formats = query_formats,
    .init          = init,
    .uninit        = uninit,
    .inputs        = ocr_inputs,
    .outputs       = ocr_outputs,
}

Definition at line 139 of file vf_ocr.c.