FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
vf_minterpolate.c File Reference
#include "motion_estimation.h"
#include "libavcodec/mathops.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/motion_vector.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#include "scene_sad.h"

Go to the source code of this file.

Data Structures

struct  Cluster
 
struct  Block
 
struct  PixelMVS
 
struct  PixelWeights
 
struct  PixelRefs
 
struct  Frame
 
struct  MIContext
 

Macros

#define ME_MODE_BIDIR   0
 Copyright (c) 2014-2015 Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<.com> More...
 
#define ME_MODE_BILAT   1
 
#define MC_MODE_OBMC   0
 
#define MC_MODE_AOBMC   1
 
#define SCD_METHOD_NONE   0
 
#define SCD_METHOD_FDIFF   1
 
#define NB_FRAMES   4
 
#define NB_PIXEL_MVS   32
 
#define NB_CLUSTERS   128
 
#define ALPHA_MAX   1024
 
#define CLUSTER_THRESHOLD   4
 
#define PX_WEIGHT_MAX   255
 
#define COST_PRED_SCALE   64
 
#define OFFSET(x)   offsetof(MIContext, x)
 
#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
#define CONST(name, help, val, unit)   { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }
 
#define ADD_PRED(preds, px, py)
 
#define ADD_PIXELS(b_weight, mv_x, mv_y)
 

Enumerations

enum  MIMode { MI_MODE_DUP = 0, MI_MODE_BLEND = 1, MI_MODE_MCI = 2 }
 

Functions

 AVFILTER_DEFINE_CLASS (minterpolate)
 
static int query_formats (AVFilterContext *ctx)
 
static uint64_t get_sbad (AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
 
static uint64_t get_sbad_ob (AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
 
static uint64_t get_sad_ob (AVMotionEstContext *me_ctx, int x, int y, int x_mv, int y_mv)
 
static int config_input (AVFilterLink *inlink)
 
static int config_output (AVFilterLink *outlink)
 
static void search_mv (MIContext *mi_ctx, Block *blocks, int mb_x, int mb_y, int dir)
 
static void bilateral_me (MIContext *mi_ctx)
 
static int var_size_bme (MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n)
 
static int cluster_mvs (MIContext *mi_ctx)
 
static int inject_frame (AVFilterLink *inlink, AVFrame *avf_in)
 
static int detect_scene_change (MIContext *mi_ctx)
 
static void bidirectional_obmc (MIContext *mi_ctx, int alpha)
 
static void set_frame_data (MIContext *mi_ctx, int alpha, AVFrame *avf_out)
 
static void var_size_bmc (MIContext *mi_ctx, Block *block, int x_mb, int y_mb, int n, int alpha)
 
static void bilateral_obmc (MIContext *mi_ctx, Block *block, int mb_x, int mb_y, int alpha)
 
static void interpolate (AVFilterLink *inlink, AVFrame *avf_out)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *avf_in)
 
static av_cold void free_blocks (Block *block, int sb)
 
static av_cold void uninit (AVFilterContext *ctx)
 

Variables

static const uint8_t obmc_linear32 [1024]
 
static const uint8_t obmc_linear16 [256]
 
static const uint8_t obmc_linear8 [64]
 
static const uint8_t obmc_linear4 [16]
 
static const uint8_t *const obmc_tab_linear [4]
 
static const AVOption minterpolate_options []
 
static const AVFilterPad minterpolate_inputs []
 
static const AVFilterPad minterpolate_outputs []
 
AVFilter ff_vf_minterpolate
 

Macro Definition Documentation

#define ME_MODE_BIDIR   0

Copyright (c) 2014-2015 Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<.com>

This file is part of FFmpeg.

FFmpeg is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

FFmpeg is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with FFmpeg; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Definition at line 35 of file vf_minterpolate.c.

Referenced by config_input(), inject_frame(), and interpolate().

#define ME_MODE_BILAT   1

Definition at line 36 of file vf_minterpolate.c.

Referenced by config_input(), inject_frame(), and interpolate().

#define MC_MODE_OBMC   0

Definition at line 38 of file vf_minterpolate.c.

#define MC_MODE_AOBMC   1

Definition at line 39 of file vf_minterpolate.c.

Referenced by bilateral_obmc(), and inject_frame().

#define SCD_METHOD_NONE   0

Definition at line 41 of file vf_minterpolate.c.

#define SCD_METHOD_FDIFF   1

Definition at line 42 of file vf_minterpolate.c.

Referenced by config_input(), and detect_scene_change().

#define NB_FRAMES   4

Definition at line 44 of file vf_minterpolate.c.

Referenced by config_input(), filter_frame(), inject_frame(), and uninit().

#define NB_PIXEL_MVS   32

Definition at line 45 of file vf_minterpolate.c.

#define NB_CLUSTERS   128

Definition at line 46 of file vf_minterpolate.c.

Referenced by cluster_mvs(), and inject_frame().

#define ALPHA_MAX   1024

Definition at line 48 of file vf_minterpolate.c.

Referenced by bidirectional_obmc(), bilateral_obmc(), interpolate(), and set_frame_data().

#define CLUSTER_THRESHOLD   4

Definition at line 49 of file vf_minterpolate.c.

Referenced by cluster_mvs().

#define PX_WEIGHT_MAX   255

Definition at line 50 of file vf_minterpolate.c.

Referenced by var_size_bmc().

#define COST_PRED_SCALE   64

Definition at line 51 of file vf_minterpolate.c.

Referenced by get_sad_ob(), get_sbad(), and get_sbad_ob().

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

Definition at line 200 of file vf_minterpolate.c.

Definition at line 201 of file vf_minterpolate.c.

#define CONST (   name,
  help,
  val,
  unit 
)    { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit }

Definition at line 202 of file vf_minterpolate.c.

#define ADD_PRED (   preds,
  px,
  py 
)
Value:
do {\
preds.mvs[preds.nb][0] = px;\
preds.mvs[preds.nb][1] = py;\
preds.nb++;\
} while(0)

Definition at line 418 of file vf_minterpolate.c.

Referenced by search_mv().

#define ADD_PIXELS (   b_weight,
  mv_x,
  mv_y 
)
Value:
do {\
if (!b_weight || pixel_refs->nb + 1 >= NB_PIXEL_MVS)\
continue;\
pixel_refs->refs[pixel_refs->nb] = 1;\
pixel_weights->weights[pixel_refs->nb] = b_weight * (ALPHA_MAX - alpha);\
pixel_mvs->mvs[pixel_refs->nb][0] = av_clip((mv_x * alpha) / ALPHA_MAX, x_min, x_max);\
pixel_mvs->mvs[pixel_refs->nb][1] = av_clip((mv_y * alpha) / ALPHA_MAX, y_min, y_max);\
pixel_refs->nb++;\
pixel_refs->refs[pixel_refs->nb] = 2;\
pixel_weights->weights[pixel_refs->nb] = b_weight * alpha;\
pixel_mvs->mvs[pixel_refs->nb][0] = av_clip(-mv_x * (ALPHA_MAX - alpha) / ALPHA_MAX, x_min, x_max);\
pixel_mvs->mvs[pixel_refs->nb][1] = av_clip(-mv_y * (ALPHA_MAX - alpha) / ALPHA_MAX, y_min, y_max);\
pixel_refs->nb++;\
} while(0)
#define NB_PIXEL_MVS
#define ALPHA_MAX
if(ret)
static const int16_t alpha[]
Definition: ilbcdata.h:55

Definition at line 850 of file vf_minterpolate.c.

Referenced by bidirectional_obmc(), bilateral_obmc(), and var_size_bmc().

Enumeration Type Documentation

enum MIMode
Enumerator
MI_MODE_DUP 
MI_MODE_BLEND 
MI_MODE_MCI 

Definition at line 129 of file vf_minterpolate.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( minterpolate  )
static int query_formats ( AVFilterContext ctx)
static

Definition at line 238 of file vf_minterpolate.c.

static uint64_t get_sbad ( AVMotionEstContext me_ctx,
int  x,
int  y,
int  x_mv,
int  y_mv 
)
static

Definition at line 258 of file vf_minterpolate.c.

Referenced by bilateral_obmc(), and inject_frame().

static uint64_t get_sbad_ob ( AVMotionEstContext me_ctx,
int  x,
int  y,
int  x_mv,
int  y_mv 
)
static

Definition at line 283 of file vf_minterpolate.c.

Referenced by config_input().

static uint64_t get_sad_ob ( AVMotionEstContext me_ctx,
int  x,
int  y,
int  x_mv,
int  y_mv 
)
static

Definition at line 309 of file vf_minterpolate.c.

Referenced by config_input().

static int config_input ( AVFilterLink inlink)
static

Definition at line 335 of file vf_minterpolate.c.

static int config_output ( AVFilterLink outlink)
static

Definition at line 408 of file vf_minterpolate.c.

static void search_mv ( MIContext mi_ctx,
Block blocks,
int  mb_x,
int  mb_y,
int  dir 
)
static

Definition at line 425 of file vf_minterpolate.c.

Referenced by bilateral_me(), and inject_frame().

static void bilateral_me ( MIContext mi_ctx)
static

Definition at line 567 of file vf_minterpolate.c.

Referenced by inject_frame().

static int var_size_bme ( MIContext mi_ctx,
Block block,
int  x_mb,
int  y_mb,
int  n 
)
static

Definition at line 588 of file vf_minterpolate.c.

Referenced by cluster_mvs().

static int cluster_mvs ( MIContext mi_ctx)
static

Definition at line 650 of file vf_minterpolate.c.

Referenced by inject_frame().

static int inject_frame ( AVFilterLink inlink,
AVFrame avf_in 
)
static

Definition at line 740 of file vf_minterpolate.c.

Referenced by filter_frame().

static int detect_scene_change ( MIContext mi_ctx)
static

Definition at line 826 of file vf_minterpolate.c.

Referenced by filter_frame().

static void bidirectional_obmc ( MIContext mi_ctx,
int  alpha 
)
static

Definition at line 866 of file vf_minterpolate.c.

Referenced by interpolate().

static void set_frame_data ( MIContext mi_ctx,
int  alpha,
AVFrame avf_out 
)
static

Definition at line 916 of file vf_minterpolate.c.

Referenced by interpolate().

static void var_size_bmc ( MIContext mi_ctx,
Block block,
int  x_mb,
int  y_mb,
int  n,
int  alpha 
)
static

Definition at line 974 of file vf_minterpolate.c.

Referenced by interpolate().

static void bilateral_obmc ( MIContext mi_ctx,
Block block,
int  mb_x,
int  mb_y,
int  alpha 
)
static

Definition at line 1013 of file vf_minterpolate.c.

Referenced by interpolate().

static void interpolate ( AVFilterLink inlink,
AVFrame avf_out 
)
static

Definition at line 1077 of file vf_minterpolate.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink inlink,
AVFrame avf_in 
)
static

Definition at line 1159 of file vf_minterpolate.c.

static av_cold void free_blocks ( Block block,
int  sb 
)
static

Definition at line 1209 of file vf_minterpolate.c.

Referenced by uninit().

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 1217 of file vf_minterpolate.c.

Variable Documentation

const uint8_t obmc_linear32[1024]
static

Definition at line 53 of file vf_minterpolate.c.

const uint8_t obmc_linear16[256]
static
Initial value:
= {
0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
16, 44, 76,104,136,164,196,224,224,196,164,136,104, 76, 44, 16,
12, 40, 64, 92,116,144,168,196,196,168,144,116, 92, 64, 40, 12,
12, 32, 56, 76,100,120,144,164,164,144,120,100, 76, 56, 32, 12,
8, 28, 44, 64, 80,100,116,136,136,116,100, 80, 64, 44, 28, 8,
8, 20, 36, 48, 64, 76, 92,104,104, 92, 76, 64, 48, 36, 20, 8,
4, 16, 24, 36, 44, 56, 64, 76, 76, 64, 56, 44, 36, 24, 16, 4,
4, 8, 16, 20, 28, 32, 40, 44, 44, 40, 32, 28, 20, 16, 8, 4,
0, 4, 4, 8, 8, 12, 12, 16, 16, 12, 12, 8, 8, 4, 4, 0,
}

Definition at line 88 of file vf_minterpolate.c.

const uint8_t obmc_linear8[64]
static
Initial value:
= {
4, 12, 20, 28, 28, 20, 12, 4,
12, 36, 60, 84, 84, 60, 36, 12,
20, 60,100,140,140,100, 60, 20,
28, 84,140,196,196,140, 84, 28,
28, 84,140,196,196,140, 84, 28,
20, 60,100,140,140,100, 60, 20,
12, 36, 60, 84, 84, 60, 36, 12,
4, 12, 20, 28, 28, 20, 12, 4,
}

Definition at line 107 of file vf_minterpolate.c.

const uint8_t obmc_linear4[16]
static
Initial value:
= {
16, 48, 48, 16,
48,144,144, 48,
48,144,144, 48,
16, 48, 48, 16,
}

Definition at line 118 of file vf_minterpolate.c.

const uint8_t* const obmc_tab_linear[4]
static
Initial value:
= {
}
static const uint8_t obmc_linear32[1024]
static const uint8_t obmc_linear4[16]
static const uint8_t obmc_linear16[256]
static const uint8_t obmc_linear8[64]

Definition at line 125 of file vf_minterpolate.c.

Referenced by bidirectional_obmc(), and bilateral_obmc().

const AVOption minterpolate_options[]
static

Definition at line 204 of file vf_minterpolate.c.

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

Definition at line 1240 of file vf_minterpolate.c.

const AVFilterPad minterpolate_outputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_output,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int config_output(AVFilterLink *outlink)

Definition at line 1250 of file vf_minterpolate.c.

AVFilter ff_vf_minterpolate
Initial value:
= {
.name = "minterpolate",
.description = NULL_IF_CONFIG_SMALL("Frame rate conversion using Motion Interpolation."),
.priv_size = sizeof(MIContext),
.priv_class = &minterpolate_class,
}
static const AVFilterPad minterpolate_outputs[]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
static const AVFilterPad minterpolate_inputs[]
static int query_formats(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)

Definition at line 1259 of file vf_minterpolate.c.