vf_dnn_classify.c File Reference

implementing an classification filter using deep learning networks. More...

#include "libavutil/file_open.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "filters.h"
#include "dnn_filter_common.h"
#include "video.h"
#include "libavutil/time.h"
#include "libavutil/avstring.h"
#include "libavutil/detection_bbox.h"

Go to the source code of this file.

Data Structures
struct	DnnClassifyContext

Macros
#define	OFFSET(x)
#define	OFFSET2(x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM

Functions
	AVFILTER_DNN_DEFINE_CLASS (dnn_classify, DNN_OV)
static int	dnn_classify_post_proc (AVFrame *frame, DNNData *output, uint32_t bbox_index, AVFilterContext *filter_ctx)
static void	free_classify_labels (DnnClassifyContext *ctx)
static int	read_classify_label_file (AVFilterContext *context)
static av_cold int	dnn_classify_init (AVFilterContext *context)
static int	dnn_classify_flush_frame (AVFilterLink *outlink, int64_t pts, int64_t *out_pts)
static int	dnn_classify_activate (AVFilterContext *filter_ctx)
static av_cold void	dnn_classify_uninit (AVFilterContext *context)

Variables
static const AVOption	dnn_classify_options []
static enum AVPixelFormat	pix_fmts []
const FFFilter	ff_vf_dnn_classify

Detailed Description

implementing an classification filter using deep learning networks.

Definition in file vf_dnn_classify.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(DnnClassifyContext, dnnctx.x)

Definition at line 44 of file vf_dnn_classify.c.

OFFSET2

#define OFFSET2

(

x

)

Value:

offsetof(DnnClassifyContext, x)

Definition at line 45 of file vf_dnn_classify.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM

Definition at line 46 of file vf_dnn_classify.c.

Function Documentation

AVFILTER_DNN_DEFINE_CLASS()

AVFILTER_DNN_DEFINE_CLASS	(	dnn_classify	,
		DNN_OV	)

dnn_classify_post_proc()

static int dnn_classify_post_proc ( AVFrame * frame, DNNData * output, uint32_t bbox_index, AVFilterContext * filter_ctx )

static

Definition at line 60 of file vf_dnn_classify.c.

Referenced by dnn_classify_init().

free_classify_labels()

static void free_classify_labels ( DnnClassifyContext * ctx )

static

Definition at line 115 of file vf_dnn_classify.c.

Referenced by dnn_classify_uninit().

read_classify_label_file()

static int read_classify_label_file ( AVFilterContext * context )

static

Definition at line 124 of file vf_dnn_classify.c.

Referenced by dnn_classify_init().

dnn_classify_init()

static av_cold int dnn_classify_init ( AVFilterContext * context )

static

Definition at line 182 of file vf_dnn_classify.c.

dnn_classify_flush_frame()

static int dnn_classify_flush_frame ( AVFilterLink * outlink, int64_t pts, int64_t * out_pts )

static

Definition at line 205 of file vf_dnn_classify.c.

Referenced by dnn_classify_activate().

dnn_classify_activate()

static int dnn_classify_activate ( AVFilterContext * filter_ctx )

static

Definition at line 233 of file vf_dnn_classify.c.

dnn_classify_uninit()

static av_cold void dnn_classify_uninit ( AVFilterContext * context )

static

Definition at line 289 of file vf_dnn_classify.c.

Variable Documentation

dnn_classify_options

const AVOption dnn_classify_options[]

static

Initial value:

= {
    { "dnn_backend", "DNN backend",                OFFSET(backend_type),     AV_OPT_TYPE_INT,       { .i64 = DNN_OV },    INT_MIN, INT_MAX, FLAGS, .unit = "backend" },
 
 
 
    { "confidence",  "threshold of confidence",    OFFSET2(confidence),      AV_OPT_TYPE_FLOAT,     { .dbl = 0.5 },  0, 1, FLAGS},
    { "labels",      "path to labels file",        OFFSET2(labels_filename), AV_OPT_TYPE_STRING,    { .str = NULL }, 0, 0, FLAGS },
    { "target",      "which one to be classified", OFFSET2(target),          AV_OPT_TYPE_STRING,    { .str = NULL }, 0, 0, FLAGS },
    { NULL }
}

Definition at line 47 of file vf_dnn_classify.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
    AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAYF32,
    AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
    AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
    AV_PIX_FMT_NV12,
    AV_PIX_FMT_NONE
}

Definition at line 196 of file vf_dnn_classify.c.

ff_vf_dnn_classify

const FFFilter ff_vf_dnn_classify

Initial value:

= {
    .p.name        = "dnn_classify",
    .p.description = NULL_IF_CONFIG_SMALL("Apply DNN classify filter to the input."),
    .p.priv_class  = &dnn_classify_class,
    .priv_size     = sizeof(DnnClassifyContext),
    .preinit       = ff_dnn_filter_init_child_class,
    .init          = dnn_classify_init,
    .uninit        = dnn_classify_uninit,
    FILTER_INPUTS(ff_video_default_filterpad),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
    .activate      = dnn_classify_activate,
}

Definition at line 296 of file vf_dnn_classify.c.