FFmpeg
Data Structures | Macros | Functions | Variables
vf_decimate.c File Reference
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "filters.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  qitem
 
struct  DecimateContext
 

Macros

#define INPUT_MAIN   0
 
#define INPUT_CLEANSRC   1
 
#define OFFSET(x)   offsetof(DecimateContext, x)
 
#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
#define CALC_DIFF(nbits)
 
#define PF_NOALPHA(suf)   AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
 
#define PF_ALPHA(suf)   AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
 
#define PF(suf)   PF_NOALPHA(suf), PF_ALPHA(suf)
 

Functions

 AVFILTER_DEFINE_CLASS (decimate)
 
static void calc_diffs (const DecimateContext *dm, struct qitem *q, const AVFrame *f1, const AVFrame *f2)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *in)
 
static int activate (AVFilterContext *ctx)
 
static av_cold int decimate_init (AVFilterContext *ctx)
 
static av_cold void decimate_uninit (AVFilterContext *ctx)
 
static int config_output (AVFilterLink *outlink)
 

Variables

static const AVOption decimate_options []
 
static enum AVPixelFormat pix_fmts []
 
static const AVFilterPad decimate_outputs []
 
const AVFilter ff_vf_decimate
 

Macro Definition Documentation

◆ INPUT_MAIN

#define INPUT_MAIN   0

Definition at line 29 of file vf_decimate.c.

◆ INPUT_CLEANSRC

#define INPUT_CLEANSRC   1

Definition at line 30 of file vf_decimate.c.

◆ OFFSET

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

Definition at line 67 of file vf_decimate.c.

◆ FLAGS

Definition at line 68 of file vf_decimate.c.

◆ CALC_DIFF

#define CALC_DIFF (   nbits)
Value:
do { \
for (x = 0; x < width; x += hblockx) { \
int64_t acc = 0; \
int m = FFMIN(width, x + hblockx); \
for (xl = x; xl < m; xl++) \
acc += abs(((const uint##nbits##_t *)f1p)[xl] - \
((const uint##nbits##_t *)f2p)[xl]); \
bdiffs[ydest * dm->nxblocks + xdest] += acc; \
xdest++; \
} \
} while (0)

◆ PF_NOALPHA

#define PF_NOALPHA (   suf)    AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf

◆ PF_ALPHA

#define PF_ALPHA (   suf)    AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf

◆ PF

#define PF (   suf)    PF_NOALPHA(suf), PF_ALPHA(suf)

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( decimate  )

◆ calc_diffs()

static void calc_diffs ( const DecimateContext dm,
struct qitem q,
const AVFrame f1,
const AVFrame f2 
)
static

Definition at line 83 of file vf_decimate.c.

Referenced by filter_frame().

◆ filter_frame()

static int filter_frame ( AVFilterLink inlink,
AVFrame in 
)
static

Definition at line 148 of file vf_decimate.c.

Referenced by activate().

◆ activate()

static int activate ( AVFilterContext ctx)
static

Definition at line 244 of file vf_decimate.c.

◆ decimate_init()

static av_cold int decimate_init ( AVFilterContext ctx)
static

Definition at line 304 of file vf_decimate.c.

◆ decimate_uninit()

static av_cold void decimate_uninit ( AVFilterContext ctx)
static

Definition at line 334 of file vf_decimate.c.

◆ config_output()

static int config_output ( AVFilterLink outlink)
static

Definition at line 367 of file vf_decimate.c.

Variable Documentation

◆ decimate_options

const AVOption decimate_options[]
static
Initial value:
= {
{ "cycle", "set the number of frame from which one will be dropped", OFFSET(cycle), AV_OPT_TYPE_INT, {.i64 = 5}, 2, 25, FLAGS },
{ "dupthresh", "set duplicate threshold", OFFSET(dupthresh_flt), AV_OPT_TYPE_DOUBLE, {.dbl = 1.1}, 0, 100, FLAGS },
{ "scthresh", "set scene change threshold", OFFSET(scthresh_flt), AV_OPT_TYPE_DOUBLE, {.dbl = 15.0}, 0, 100, FLAGS },
{ "blockx", "set the size of the x-axis blocks used during metric calculations", OFFSET(blockx), AV_OPT_TYPE_INT, {.i64 = 32}, 4, 1<<9, FLAGS },
{ "blocky", "set the size of the y-axis blocks used during metric calculations", OFFSET(blocky), AV_OPT_TYPE_INT, {.i64 = 32}, 4, 1<<9, FLAGS },
{ "ppsrc", "mark main input as a pre-processed input and activate clean source input stream", OFFSET(ppsrc), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
{ "chroma", "set whether or not chroma is considered in the metric calculations", OFFSET(chroma), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ NULL }
}

Definition at line 70 of file vf_decimate.c.

◆ pix_fmts

enum AVPixelFormat pix_fmts[]
static

◆ decimate_outputs

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

Definition at line 421 of file vf_decimate.c.

◆ ff_vf_decimate

const AVFilter ff_vf_decimate
Initial value:
= {
.name = "decimate",
.description = NULL_IF_CONFIG_SMALL("Decimate frames (post field matching filter)."),
.init = decimate_init,
.activate = activate,
.uninit = decimate_uninit,
.priv_size = sizeof(DecimateContext),
.priv_class = &decimate_class,
}

Definition at line 429 of file vf_decimate.c.

PF
#define PF(suf)
acc
int acc
Definition: yuv2rgb.c:554
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_decimate.c:353
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:171
chroma
static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror, int jobnr, int nb_jobs)
Definition: vf_waveform.c:1634
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
PF_NOALPHA
#define PF_NOALPHA(suf)
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:371
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:375
AVFILTER_FLAG_DYNAMIC_INPUTS
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:110
activate
static int activate(AVFilterContext *ctx)
Definition: vf_decimate.c:244
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:248
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
width
#define width
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:226
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:374
OFFSET
#define OFFSET(x)
Definition: vf_decimate.c:67
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:372
NULL
#define NULL
Definition: coverity.c:32
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:393
abs
#define abs(x)
Definition: cuda_runtime.h:35
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
P
#define P
decimate_uninit
static av_cold void decimate_uninit(AVFilterContext *ctx)
Definition: vf_decimate.c:334
decimate_init
static av_cold int decimate_init(AVFilterContext *ctx)
Definition: vf_decimate.c:304
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_decimate.c:367
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
DecimateContext
Definition: vf_decimate.c:38
FLAGS
#define FLAGS
Definition: vf_decimate.c:68
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:397
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:373
decimate_outputs
static const AVFilterPad decimate_outputs[]
Definition: vf_decimate.c:421