vf_framerate.c File Reference

filter for upsampling or downsampling a progressive source More...

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixelutils.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	FrameRateContext

Macros
#define	DEBUG
#define	N_SRCE   3
#define	OFFSET(x)   offsetof(FrameRateContext, x)
#define	V   AV_OPT_FLAG_VIDEO_PARAM
#define	F   AV_OPT_FLAG_FILTERING_PARAM
#define	FRAMERATE_FLAG_SCD   01

Functions
	AVFILTER_DEFINE_CLASS (framerate)
static void	next_source (AVFilterContext *ctx)
static double	get_scene_score (AVFilterContext *ctx, AVFrame *crnt, AVFrame *next)
static int	process_work_frame (AVFilterContext *ctx, int stop)
static void	set_srce_frame_dest_pts (AVFilterContext *ctx)
static void	set_work_frame_pts (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *inpicref)
static int	config_output (AVFilterLink *outlink)
static int	request_frame (AVFilterLink *outlink)

Variables
static const AVOption	framerate_options []
static const AVFilterPad	framerate_inputs []
static const AVFilterPad	framerate_outputs []
AVFilter	ff_vf_framerate

Detailed Description

filter for upsampling or downsampling a progressive source

Definition in file vf_framerate.c.

Macro Definition Documentation

#define DEBUG

Definition at line 29 of file vf_framerate.c.

Referenced by audio_decode_frame().

#define N_SRCE   3

Definition at line 42 of file vf_framerate.c.

Referenced by init().

#define OFFSET

(

x

)

offsetof(FrameRateContext, x)

Definition at line 77 of file vf_framerate.c.

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 78 of file vf_framerate.c.

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 79 of file vf_framerate.c.

#define FRAMERATE_FLAG_SCD   01

Definition at line 80 of file vf_framerate.c.

Referenced by process_work_frame().

Function Documentation

AVFILTER_DEFINE_CLASS

(

framerate

)

static void next_source ( AVFilterContext *  ctx )

static

Definition at line 98 of file vf_framerate.c.

Referenced by process_work_frame().

static double get_scene_score ( AVFilterContext *  ctx, AVFrame *  crnt, AVFrame *  next  )

static

Definition at line 117 of file vf_framerate.c.

Referenced by process_work_frame().

static int process_work_frame ( AVFilterContext *  ctx, int  stop  )

static

Definition at line 155 of file vf_framerate.c.

Referenced by filter_frame(), and request_frame().

static void set_srce_frame_dest_pts ( AVFilterContext *  ctx )

static

Definition at line 314 of file vf_framerate.c.

Referenced by filter_frame(), and set_work_frame_pts().

static void set_work_frame_pts ( AVFilterContext *  ctx )

static

Definition at line 329 of file vf_framerate.c.

Referenced by filter_frame(), and request_frame().

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 382 of file vf_framerate.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 397 of file vf_framerate.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 409 of file vf_framerate.c.

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 427 of file vf_framerate.c.

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

static

Definition at line 450 of file vf_framerate.c.

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 475 of file vf_framerate.c.

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 521 of file vf_framerate.c.

Variable Documentation

const AVOption framerate_options[]

static

Initial value:

= {
    {"fps",                 "required output frames per second rate", OFFSET(dest_frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="50"},             0,       INT_MAX, V|F },

    {"interp_start",        "point to start linear interpolation",    OFFSET(interp_start),    AV_OPT_TYPE_INT,      {.i64=15},                 0,       255,     V|F },
    {"interp_end",          "point to end linear interpolation",      OFFSET(interp_end),      AV_OPT_TYPE_INT,      {.i64=240},                0,       255,     V|F },
    {"scene",               "scene change level",                     OFFSET(scene_score),     AV_OPT_TYPE_DOUBLE,   {.dbl=7.0},                0,       INT_MAX, V|F },

    {"flags",               "set flags",                              OFFSET(flags),           AV_OPT_TYPE_FLAGS,    {.i64=1},                  0,       INT_MAX, V|F, "flags" },
    {"scene_change_detect", "enable scene change detection",          0,                       AV_OPT_TYPE_CONST,    {.i64=FRAMERATE_FLAG_SCD}, INT_MIN, INT_MAX, V|F, "flags" },
    {"scd",                 "enable scene change detection",          0,                       AV_OPT_TYPE_CONST,    {.i64=FRAMERATE_FLAG_SCD}, INT_MIN, INT_MAX, V|F, "flags" },

    {NULL}
}

Definition at line 82 of file vf_framerate.c.

const AVFilterPad framerate_inputs[]

static

Initial value:

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

Definition at line 562 of file vf_framerate.c.

const AVFilterPad framerate_outputs[]

static

Initial value:

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

Definition at line 572 of file vf_framerate.c.

AVFilter ff_vf_framerate

Initial value:

= {
    .name          = "framerate",
    .description   = NULL_IF_CONFIG_SMALL("Upsamples or downsamples progressive source between specified frame rates."),
    .priv_size     = sizeof(FrameRateContext),
    .priv_class    = &framerate_class,
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = framerate_inputs,
    .outputs       = framerate_outputs,
}

Definition at line 582 of file vf_framerate.c.