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vf_srcnn.c File Reference

Filter implementing image super-resolution using deep convolutional networks. More...

#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "libavutil/opt.h"
#include "libavformat/avio.h"
#include "dnn_interface.h"

Go to the source code of this file.

Data Structures

struct  SRCNNContext
 
struct  ThreadData
 

Macros

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

Functions

 AVFILTER_DEFINE_CLASS (srcnn)
 
static av_cold int init (AVFilterContext *context)
 
static int query_formats (AVFilterContext *context)
 
static int config_props (AVFilterLink *inlink)
 
static int uint8_to_float (AVFilterContext *context, void *arg, int jobnr, int nb_jobs)
 
static int float_to_uint8 (AVFilterContext *context, void *arg, int jobnr, int nb_jobs)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *in)
 
static av_cold void uninit (AVFilterContext *context)
 

Variables

static const AVOption srcnn_options []
 
static const AVFilterPad srcnn_inputs []
 
static const AVFilterPad srcnn_outputs []
 
AVFilter ff_vf_srcnn
 

Detailed Description

Filter implementing image super-resolution using deep convolutional networks.

https://arxiv.org/abs/1501.00092

Definition in file vf_srcnn.c.

Macro Definition Documentation

#define OFFSET (   x)    offsetof(SRCNNContext, x)

Definition at line 45 of file vf_srcnn.c.

Definition at line 46 of file vf_srcnn.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( srcnn  )
static av_cold int init ( AVFilterContext context)
static

Definition at line 59 of file vf_srcnn.c.

static int query_formats ( AVFilterContext context)
static

Definition at line 83 of file vf_srcnn.c.

static int config_props ( AVFilterLink inlink)
static

Definition at line 98 of file vf_srcnn.c.

static int uint8_to_float ( AVFilterContext context,
void arg,
int  jobnr,
int  nb_jobs 
)
static

Definition at line 130 of file vf_srcnn.c.

Referenced by filter_frame().

static int float_to_uint8 ( AVFilterContext context,
void arg,
int  jobnr,
int  nb_jobs 
)
static

Definition at line 151 of file vf_srcnn.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink inlink,
AVFrame in 
)
static

Definition at line 172 of file vf_srcnn.c.

static av_cold void uninit ( AVFilterContext context)
static

Definition at line 209 of file vf_srcnn.c.

Variable Documentation

const AVOption srcnn_options[]
static
Initial value:
= {
{ "dnn_backend", "DNN backend used for model execution", OFFSET(backend_type), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, 1, FLAGS, "backend" },
{ "native", "native backend flag", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, FLAGS, "backend" },
{ "model_filename", "path to model file specifying network architecture and its parameters", OFFSET(model_filename), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ NULL }
}
#define NULL
Definition: coverity.c:32
#define OFFSET(x)
Definition: vf_srcnn.c:45
#define FLAGS
Definition: vf_srcnn.c:46

Definition at line 47 of file vf_srcnn.c.

const AVFilterPad srcnn_inputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_props,
.filter_frame = filter_frame,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int config_props(AVFilterLink *inlink)
Definition: vf_srcnn.c:98
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_srcnn.c:172

Definition at line 220 of file vf_srcnn.c.

const AVFilterPad srcnn_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}
#define NULL
Definition: coverity.c:32

Definition at line 230 of file vf_srcnn.c.

AVFilter ff_vf_srcnn
Initial value:
= {
.name = "srcnn",
.description = NULL_IF_CONFIG_SMALL("Apply super resolution convolutional neural network to the input. Use bicubic upsamping with corresponding scaling factor before."),
.priv_size = sizeof(SRCNNContext),
.init = init,
.priv_class = &srcnn_class,
}
static const AVFilterPad srcnn_inputs[]
Definition: vf_srcnn.c:220
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:125
#define flags(name, subs,...)
Definition: cbs_h2645.c:263
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
static av_cold void uninit(AVFilterContext *context)
Definition: vf_srcnn.c:209
static av_cold int init(AVFilterContext *context)
Definition: vf_srcnn.c:59
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static const AVFilterPad srcnn_outputs[]
Definition: vf_srcnn.c:230
static int query_formats(AVFilterContext *context)
Definition: vf_srcnn.c:83

Definition at line 238 of file vf_srcnn.c.