vf_ssim.c File Reference

#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "framesync.h"
#include "internal.h"
#include "ssim.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	SSIMContext

Macros
#define	OFFSET(x)   offsetof(SSIMContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	SUM_LEN(w)   (((w) >> 2) + 3)
#define	PF(suf)   AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf, AV_PIX_FMT_GBR##suf

Functions
	FRAMESYNC_DEFINE_CLASS (ssim, SSIMContext, fs)
static void	set_meta (AVDictionary **metadata, const char *key, char comp, float d)
static void	ssim_4x4xn_16bit (const uint8_t *main8, ptrdiff_t main_stride, const uint8_t *ref8, ptrdiff_t ref_stride, int64_t(*sums)[4], int width)
static void	ssim_4x4xn_8bit (const uint8_t *main, ptrdiff_t main_stride, const uint8_t *ref, ptrdiff_t ref_stride, int(*sums)[4], int width)
static float	ssim_end1x (int64_t s1, int64_t s2, int64_t ss, int64_t s12, int max)
static float	ssim_end1 (int s1, int s2, int ss, int s12)
static float	ssim_endn_16bit (const int64_t(*sum0)[4], const int64_t(*sum1)[4], int width, int max)
static float	ssim_endn_8bit (const int(*sum0)[4], const int(*sum1)[4], int width)
static float	ssim_plane_16bit (SSIMDSPContext *dsp, uint8_t *main, int main_stride, uint8_t *ref, int ref_stride, int width, int height, void *temp, int max)
static float	ssim_plane (SSIMDSPContext *dsp, uint8_t *main, int main_stride, uint8_t *ref, int ref_stride, int width, int height, void *temp, int max)
static double	ssim_db (double ssim, double weight)
static int	do_ssim (FFFrameSync *fs)
static av_cold int	init (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_input_ref (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	ssim_options []
static const AVFilterPad	ssim_inputs []
static const AVFilterPad	ssim_outputs []
AVFilter	ff_vf_ssim

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(SSIMContext, x)

Definition at line 72 of file vf_ssim.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 73 of file vf_ssim.c.

SUM_LEN

#define SUM_LEN

(

w

)

(((w) >> 2) + 3)

Definition at line 222 of file vf_ssim.c.

PF

#define PF

(

suf

)

AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf, AV_PIX_FMT_GBR##suf

Function Documentation

FRAMESYNC_DEFINE_CLASS()

FRAMESYNC_DEFINE_CLASS	(	ssim	,
		SSIMContext	,
		fs
	)

set_meta()

static void set_meta ( AVDictionary **  metadata, const char *  key, char  comp, float  d  )

static

Definition at line 83 of file vf_ssim.c.

Referenced by do_ssim().

ssim_4x4xn_16bit()

static void ssim_4x4xn_16bit ( const uint8_t *  main8, ptrdiff_t  main_stride, const uint8_t *  ref8, ptrdiff_t  ref_stride, int64_t(*)  sums[4], int  width  )

static

Definition at line 96 of file vf_ssim.c.

Referenced by ssim_plane_16bit().

ssim_4x4xn_8bit()

static void ssim_4x4xn_8bit ( const uint8_t *  main, ptrdiff_t  main_stride, const uint8_t *  ref, ptrdiff_t  ref_stride, int(*)  sums[4], int  width  )

static

Definition at line 132 of file vf_ssim.c.

Referenced by config_input_ref().

ssim_end1x()

static float ssim_end1x ( int64_t  s1, int64_t  s2, int64_t  ss, int64_t  s12, int  max  )

static

Definition at line 163 of file vf_ssim.c.

Referenced by ssim_endn_16bit().

ssim_end1()

static float ssim_end1 ( int  s1, int  s2, int  ss, int  s12  )

static

Definition at line 179 of file vf_ssim.c.

Referenced by ssim_endn_8bit().

ssim_endn_16bit()

static float ssim_endn_16bit ( const int64_t(*)  sum0[4], const int64_t(*)  sum1[4], int  width, int  max  )

static

Definition at line 195 of file vf_ssim.c.

Referenced by ssim_plane_16bit().

ssim_endn_8bit()

static float ssim_endn_8bit ( const int(*)  sum0[4], const int(*)  sum1[4], int  width  )

static

Definition at line 209 of file vf_ssim.c.

Referenced by config_input_ref().

ssim_plane_16bit()

static float ssim_plane_16bit ( SSIMDSPContext *  dsp, uint8_t *  main, int  main_stride, uint8_t *  ref, int  ref_stride, int  width, int  height, void *  temp, int  max  )

static

Definition at line 224 of file vf_ssim.c.

Referenced by config_input_ref().

ssim_plane()

static float ssim_plane ( SSIMDSPContext *  dsp, uint8_t *  main, int  main_stride, uint8_t *  ref, int  ref_stride, int  width, int  height, void *  temp, int  max  )

static

Definition at line 252 of file vf_ssim.c.

Referenced by config_input_ref().

ssim_db()

static double ssim_db ( double  ssim, double  weight  )

static

Definition at line 280 of file vf_ssim.c.

Referenced by do_ssim(), and uninit().

do_ssim()

static int do_ssim ( FFFrameSync *  fs )

static

Definition at line 285 of file vf_ssim.c.

Referenced by init().

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 334 of file vf_ssim.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 358 of file vf_ssim.c.

config_input_ref()

static int config_input_ref ( AVFilterLink *  inlink )

static

Definition at line 379 of file vf_ssim.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 427 of file vf_ssim.c.

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 449 of file vf_ssim.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 455 of file vf_ssim.c.

Variable Documentation

ssim_options

const AVOption ssim_options[]

static

Initial value:

= {
    {"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    {"f",          "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { NULL }
}

Definition at line 75 of file vf_ssim.c.

ssim_inputs

const AVFilterPad ssim_inputs[]

static

Initial value:

= {
    {
        .name         = "main",
        .type         = AVMEDIA_TYPE_VIDEO,
    },{
        .name         = "reference",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input_ref,
    },
    { NULL }
}

Definition at line 480 of file vf_ssim.c.

ssim_outputs

const AVFilterPad ssim_outputs[]

static

Initial value:

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

Definition at line 492 of file vf_ssim.c.

ff_vf_ssim

AVFilter ff_vf_ssim

Initial value:

= {
    .name          = "ssim",
    .description   = NULL_IF_CONFIG_SMALL("Calculate the SSIM between two video streams."),
    .preinit       = ssim_framesync_preinit,
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .activate      = activate,
    .priv_size     = sizeof(SSIMContext),
    .priv_class    = &ssim_class,
    .inputs        = ssim_inputs,
    .outputs       = ssim_outputs,
}

Definition at line 501 of file vf_ssim.c.