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vf_fieldmatch.c File Reference

Fieldmatching filter, ported from VFM filter (VapouSsynth) by Clément. More...

#include <inttypes.h>
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  FieldMatchContext
 

Macros

#define INPUT_MAIN   0
 
#define INPUT_CLEANSRC   1
 
#define OFFSET(x)   offsetof(FieldMatchContext, x)
 
#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
#define FILTER(xm2, xm1, xp1, xp2)
 
#define HAS_FF_AROUND(p, lz)
 
#define C_ARRAY_ADD(v)
 
#define VERTICAL_HALF(y_start, y_end)
 
#define LOAD_COMB(mid)
 
#define SLIDING_FRAME_WINDOW(prv, src, nxt)
 

Enumerations

enum  fieldmatch_parity { FM_PARITY_AUTO = -1, FM_PARITY_BOTTOM = 0, FM_PARITY_TOP = 1 }
 
enum  matching_mode {
  MODE_PC, MODE_PC_N, MODE_PC_U, MODE_PC_N_UB,
  MODE_PCN, MODE_PCN_UB, NB_MODE
}
 
enum  comb_matching_mode { COMBMATCH_NONE, COMBMATCH_SC, COMBMATCH_FULL, NB_COMBMATCH }
 
enum  comb_dbg { COMBDBG_NONE, COMBDBG_PCN, COMBDBG_PCNUB, NB_COMBDBG }
 
enum  {
  mP, mC, mN, mB,
  mU
}
 

Functions

 AVFILTER_DEFINE_CLASS (fieldmatch)
 
static int get_width (const FieldMatchContext *fm, const AVFrame *f, int plane)
 
static int get_height (const FieldMatchContext *fm, const AVFrame *f, int plane)
 
static int64_t luma_abs_diff (const AVFrame *f1, const AVFrame *f2)
 
static void fill_buf (uint8_t *data, int w, int h, int linesize, uint8_t v)
 
static int calc_combed_score (const FieldMatchContext *fm, const AVFrame *src)
 
static void build_abs_diff_mask (const uint8_t *prvp, int prv_linesize, const uint8_t *nxtp, int nxt_linesize, uint8_t *tbuffer, int tbuf_linesize, int width, int height)
 
static void build_diff_map (FieldMatchContext *fm, const uint8_t *prvp, int prv_linesize, const uint8_t *nxtp, int nxt_linesize, uint8_t *dstp, int dst_linesize, int height, int width, int plane)
 Build a map over which pixels differ a lot/a little.
 
static int get_field_base (int match, int field)
 
static AVFrameselect_frame (FieldMatchContext *fm, int match)
 
static int compare_fields (FieldMatchContext *fm, int match1, int match2, int field)
 
static void copy_fields (const FieldMatchContext *fm, AVFrame *dst, const AVFrame *src, int field)
 
static AVFramecreate_weave_frame (AVFilterContext *ctx, int match, int field, const AVFrame *prv, AVFrame *src, const AVFrame *nxt)
 
static int checkmm (AVFilterContext *ctx, int *combs, int m1, int m2, AVFrame **gen_frames, int field)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *in)
 
static int request_inlink (AVFilterContext *ctx, int lid)
 
static int request_frame (AVFilterLink *outlink)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_input (AVFilterLink *inlink)
 
static av_cold int fieldmatch_init (AVFilterContext *ctx)
 
static av_cold void fieldmatch_uninit (AVFilterContext *ctx)
 
static int config_output (AVFilterLink *outlink)
 

Variables

static const AVOption fieldmatch_options []
 
static const int fxo0m [] = { mP, mC, mN, mB, mU }
 
static const int fxo1m [] = { mN, mC, mP, mU, mB }
 
static const AVFilterPad fieldmatch_outputs []
 
AVFilter avfilter_vf_fieldmatch
 

Detailed Description

Fieldmatching filter, ported from VFM filter (VapouSsynth) by Clément.

Fredrik Mellbin is the author of the VIVTC/VFM filter, which is itself a light clone of the TIVTC/TFM (AviSynth) filter written by Kevin Stone (tritical), the original author.

See Also
http://bengal.missouri.edu/~kes25c/
http://www.vapoursynth.com/about/

Definition in file vf_fieldmatch.c.

Macro Definition Documentation

#define INPUT_MAIN   0

Definition at line 42 of file vf_fieldmatch.c.

Referenced by config_output(), fieldmatch_init(), filter_frame(), and request_frame().

#define INPUT_CLEANSRC   1

Definition at line 43 of file vf_fieldmatch.c.

Referenced by config_output(), fieldmatch_init(), filter_frame(), and request_frame().

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

Definition at line 112 of file vf_fieldmatch.c.

Definition at line 113 of file vf_fieldmatch.c.

#define FILTER (   xm2,
  xm1,
  xp1,
  xp2 
)
Value:
abs( 4 * srcp[x] \
-3 * (srcp[x + (xm1)*src_linesize] + srcp[x + (xp1)*src_linesize]) \
+ (srcp[x + (xm2)*src_linesize] + srcp[x + (xp2)*src_linesize])) > cthresh6
#define HAS_FF_AROUND (   p,
  lz 
)
Value:
(p[x-1 - lz] == 0xff || p[x - lz] == 0xff || p[x+1 - lz] == 0xff || \
p[x-1 ] == 0xff || p[x+1 ] == 0xff || \
p[x-1 + lz] == 0xff || p[x + lz] == 0xff || p[x+1 + lz] == 0xff)

Referenced by calc_combed_score().

#define C_ARRAY_ADD (   v)
Value:
do { \
const int box1 = (x / blockx) * 4; \
const int box2 = ((x + xhalf) / blockx) * 4; \
c_array[temp1 + box1 ] += v; \
c_array[temp1 + box2 + 1] += v; \
c_array[temp2 + box1 + 2] += v; \
c_array[temp2 + box2 + 3] += v; \
} while (0)

Referenced by calc_combed_score().

#define VERTICAL_HALF (   y_start,
  y_end 
)
Value:
do { \
for (y = y_start; y < y_end; y++) { \
const int temp1 = (y / blocky) * xblocks4; \
const int temp2 = ((y + yhalf) / blocky) * xblocks4; \
for (x = 0; x < width; x++) \
if (cmkp[x - cmk_linesize] == 0xff && \
cmkp[x ] == 0xff && \
cmkp[x + cmk_linesize] == 0xff) \
C_ARRAY_ADD(1); \
cmkp += cmk_linesize; \
} \
} while (0)

Referenced by calc_combed_score().

#define LOAD_COMB (   mid)
Value:
do { \
if (combs[mid] < 0) { \
if (!gen_frames[mid]) \
gen_frames[mid] = create_weave_frame(ctx, mid, field, \
fm->prv, fm->src, fm->nxt); \
combs[mid] = calc_combed_score(fm, gen_frames[mid]); \
} \
} while (0)

Referenced by checkmm().

#define SLIDING_FRAME_WINDOW (   prv,
  src,
  nxt 
)
Value:
do { \
if (prv != src) /* 2nd loop exception (1st has prv==src and we don't want to loose src) */ \
av_frame_free(&prv); \
prv = src; \
src = nxt; \
if (in) \
nxt = in; \
if (!prv) \
prv = src; \
if (!prv) /* received only one frame at that point */ \
return 0; \
av_assert0(prv && src && nxt); \
} while (0)

Referenced by filter_frame().

Enumeration Type Documentation

Enumerator:
FM_PARITY_AUTO 
FM_PARITY_BOTTOM 
FM_PARITY_TOP 

Definition at line 45 of file vf_fieldmatch.c.

Enumerator:
MODE_PC 
MODE_PC_N 
MODE_PC_U 
MODE_PC_N_UB 
MODE_PCN 
MODE_PCN_UB 
NB_MODE 

Definition at line 51 of file vf_fieldmatch.c.

Enumerator:
COMBMATCH_NONE 
COMBMATCH_SC 
COMBMATCH_FULL 
NB_COMBMATCH 

Definition at line 61 of file vf_fieldmatch.c.

enum comb_dbg
Enumerator:
COMBDBG_NONE 
COMBDBG_PCN 
COMBDBG_PCNUB 
NB_COMBDBG 

Definition at line 68 of file vf_fieldmatch.c.

anonymous enum
Enumerator:
mP 
mC 
mN 
mB 
mU 

Definition at line 471 of file vf_fieldmatch.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( fieldmatch  )
static int get_width ( const FieldMatchContext fm,
const AVFrame f,
int  plane 
)
static

Definition at line 154 of file vf_fieldmatch.c.

Referenced by calc_combed_score(), compare_fields(), and copy_fields().

static int get_height ( const FieldMatchContext fm,
const AVFrame f,
int  plane 
)
static

Definition at line 159 of file vf_fieldmatch.c.

Referenced by calc_combed_score(), compare_fields(), and copy_fields().

static int64_t luma_abs_diff ( const AVFrame f1,
const AVFrame f2 
)
static

Definition at line 164 of file vf_fieldmatch.c.

Referenced by filter_frame().

static void fill_buf ( uint8_t data,
int  w,
int  h,
int  linesize,
uint8_t  v 
)
static

Definition at line 184 of file vf_fieldmatch.c.

Referenced by calc_combed_score(), and compare_fields().

static int calc_combed_score ( const FieldMatchContext fm,
const AVFrame src 
)
static

Definition at line 194 of file vf_fieldmatch.c.

Referenced by filter_frame().

static void build_abs_diff_mask ( const uint8_t prvp,
int  prv_linesize,
const uint8_t nxtp,
int  nxt_linesize,
uint8_t tbuffer,
int  tbuf_linesize,
int  width,
int  height 
)
static

Definition at line 392 of file vf_fieldmatch.c.

Referenced by build_diff_map().

static void build_diff_map ( FieldMatchContext fm,
const uint8_t prvp,
int  prv_linesize,
const uint8_t nxtp,
int  nxt_linesize,
uint8_t dstp,
int  dst_linesize,
int  height,
int  width,
int  plane 
)
static

Build a map over which pixels differ a lot/a little.

Definition at line 413 of file vf_fieldmatch.c.

Referenced by compare_fields().

static int get_field_base ( int  match,
int  field 
)
static

Definition at line 473 of file vf_fieldmatch.c.

Referenced by compare_fields().

static AVFrame* select_frame ( FieldMatchContext fm,
int  match 
)
static

Definition at line 478 of file vf_fieldmatch.c.

Referenced by compare_fields().

static int compare_fields ( FieldMatchContext fm,
int  match1,
int  match2,
int  field 
)
static

Definition at line 485 of file vf_fieldmatch.c.

Referenced by filter_frame().

static void copy_fields ( const FieldMatchContext fm,
AVFrame dst,
const AVFrame src,
int  field 
)
static

Definition at line 607 of file vf_fieldmatch.c.

Referenced by create_weave_frame().

static AVFrame* create_weave_frame ( AVFilterContext ctx,
int  match,
int  field,
const AVFrame prv,
AVFrame src,
const AVFrame nxt 
)
static

Definition at line 617 of file vf_fieldmatch.c.

Referenced by filter_frame().

static int checkmm ( AVFilterContext ctx,
int *  combs,
int  m1,
int  m2,
AVFrame **  gen_frames,
int  field 
)
static

Definition at line 644 of file vf_fieldmatch.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink inlink,
AVFrame in 
)
static

Definition at line 671 of file vf_fieldmatch.c.

Referenced by fieldmatch_init(), and request_inlink().

static int request_inlink ( AVFilterContext ctx,
int  lid 
)
static

Definition at line 818 of file vf_fieldmatch.c.

Referenced by request_frame().

static int request_frame ( AVFilterLink outlink)
static

Definition at line 834 of file vf_fieldmatch.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 850 of file vf_fieldmatch.c.

static int config_input ( AVFilterLink inlink)
static

Definition at line 862 of file vf_fieldmatch.c.

Referenced by fieldmatch_init().

static av_cold int fieldmatch_init ( AVFilterContext ctx)
static

Definition at line 893 of file vf_fieldmatch.c.

static av_cold void fieldmatch_uninit ( AVFilterContext ctx)
static

Definition at line 929 of file vf_fieldmatch.c.

static int config_output ( AVFilterLink outlink)
static

Definition at line 947 of file vf_fieldmatch.c.

Variable Documentation

const AVOption fieldmatch_options[]
static

Definition at line 115 of file vf_fieldmatch.c.

const int fxo0m[] = { mP, mC, mN, mB, mU }
static

Definition at line 668 of file vf_fieldmatch.c.

Referenced by filter_frame().

const int fxo1m[] = { mN, mC, mP, mU, mB }
static

Definition at line 669 of file vf_fieldmatch.c.

Referenced by filter_frame().

const AVFilterPad fieldmatch_outputs[]
static
Initial value:
= {
{
.name = "default",
.request_frame = request_frame,
.config_props = config_output,
},
{ NULL }
}

Definition at line 963 of file vf_fieldmatch.c.

AVFilter avfilter_vf_fieldmatch
Initial value:
= {
.name = "fieldmatch",
.description = NULL_IF_CONFIG_SMALL("Field matching for inverse telecine."),
.query_formats = query_formats,
.priv_size = sizeof(FieldMatchContext),
.inputs = NULL,
.priv_class = &fieldmatch_class,
}

Definition at line 973 of file vf_fieldmatch.c.