FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
vf_fillborders.c File Reference
#include "libavutil/colorspace.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  Borders
 
struct  FillBordersContext
 

Macros

#define OFFSET(x)   offsetof(FillBordersContext, x)
 
#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 

Enumerations

enum  { Y, U, V, A }
 
enum  { R, G, B }
 
enum  FillMode { FM_SMEAR, FM_MIRROR, FM_FIXED, FM_NB_MODES }
 

Functions

static int query_formats (AVFilterContext *ctx)
 
static void smear_borders8 (FillBordersContext *s, AVFrame *frame)
 
static void smear_borders16 (FillBordersContext *s, AVFrame *frame)
 
static void mirror_borders8 (FillBordersContext *s, AVFrame *frame)
 
static void mirror_borders16 (FillBordersContext *s, AVFrame *frame)
 
static void fixed_borders8 (FillBordersContext *s, AVFrame *frame)
 
static void fixed_borders16 (FillBordersContext *s, AVFrame *frame)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *frame)
 
static int config_input (AVFilterLink *inlink)
 
 AVFILTER_DEFINE_CLASS (fillborders)
 

Variables

static const AVOption fillborders_options []
 
static const AVFilterPad fillborders_inputs []
 
static const AVFilterPad fillborders_outputs []
 
AVFilter ff_vf_fillborders
 

Macro Definition Documentation

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

Definition at line 348 of file vf_fillborders.c.

Definition at line 349 of file vf_fillborders.c.

Enumeration Type Documentation

anonymous enum
Enumerator

Definition at line 31 of file vf_fillborders.c.

anonymous enum
Enumerator

Definition at line 32 of file vf_fillborders.c.

enum FillMode
Enumerator
FM_SMEAR 
FM_MIRROR 
FM_FIXED 
FM_NB_MODES 

Definition at line 34 of file vf_fillborders.c.

Function Documentation

static int query_formats ( AVFilterContext ctx)
static

Definition at line 57 of file vf_fillborders.c.

static void smear_borders8 ( FillBordersContext s,
AVFrame frame 
)
static

Definition at line 85 of file vf_fillborders.c.

Referenced by config_input().

static void smear_borders16 ( FillBordersContext s,
AVFrame frame 
)
static

Definition at line 115 of file vf_fillborders.c.

Referenced by config_input().

static void mirror_borders8 ( FillBordersContext s,
AVFrame frame 
)
static

Definition at line 147 of file vf_fillborders.c.

Referenced by config_input().

static void mirror_borders16 ( FillBordersContext s,
AVFrame frame 
)
static

Definition at line 180 of file vf_fillborders.c.

Referenced by config_input().

static void fixed_borders8 ( FillBordersContext s,
AVFrame frame 
)
static

Definition at line 213 of file vf_fillborders.c.

Referenced by config_input().

static void fixed_borders16 ( FillBordersContext s,
AVFrame frame 
)
static

Definition at line 238 of file vf_fillborders.c.

Referenced by config_input().

static int filter_frame ( AVFilterLink inlink,
AVFrame frame 
)
static

Definition at line 271 of file vf_fillborders.c.

static int config_input ( AVFilterLink inlink)
static

Definition at line 280 of file vf_fillborders.c.

AVFILTER_DEFINE_CLASS ( fillborders  )

Variable Documentation

const AVOption fillborders_options[]
static
Initial value:
= {
{ "left", "set the left fill border", OFFSET(left), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
{ "right", "set the right fill border", OFFSET(right), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
{ "top", "set the top fill border", OFFSET(top), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
{ "bottom", "set the bottom fill border", OFFSET(bottom), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
{ "mode", "set the fill borders mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=FM_SMEAR}, 0, FM_NB_MODES-1, FLAGS, "mode" },
{ "smear", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_SMEAR}, 0, 0, FLAGS, "mode" },
{ "mirror", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_MIRROR}, 0, 0, FLAGS, "mode" },
{ "fixed", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_FIXED}, 0, 0, FLAGS, "mode" },
{ "color", "set the color for the fixed mode", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS },
{ NULL }
}
#define NULL
Definition: coverity.c:32
#define FLAGS
#define OFFSET(x)
Tag MUST be and< 10hcoeff half pel interpolation filter coefficients, hcoeff[0] are the 2 middle coefficients[1] are the next outer ones and so on, resulting in a filter like:...eff[2], hcoeff[1], hcoeff[0], hcoeff[0], hcoeff[1], hcoeff[2]...the sign of the coefficients is not explicitly stored but alternates after each coeff and coeff[0] is positive, so...,+,-,+,-,+,+,-,+,-,+,...hcoeff[0] is not explicitly stored but found by subtracting the sum of all stored coefficients with signs from 32 hcoeff[0]=32-hcoeff[1]-hcoeff[2]-...a good choice for hcoeff and htaps is htaps=6 hcoeff={40,-10, 2}an alternative which requires more computations at both encoder and decoder side and may or may not be better is htaps=8 hcoeff={42,-14, 6,-2}ref_frames minimum of the number of available reference frames and max_ref_frames for example the first frame after a key frame always has ref_frames=1spatial_decomposition_type wavelet type 0 is a 9/7 symmetric compact integer wavelet 1 is a 5/3 symmetric compact integer wavelet others are reserved stored as delta from last, last is reset to 0 if always_reset||keyframeqlog quality(logarithmic quantizer scale) stored as delta from last, last is reset to 0 if always_reset||keyframemv_scale stored as delta from last, last is reset to 0 if always_reset||keyframe FIXME check that everything works fine if this changes between framesqbias dequantization bias stored as delta from last, last is reset to 0 if always_reset||keyframeblock_max_depth maximum depth of the block tree stored as delta from last, last is reset to 0 if always_reset||keyframequant_table quantization tableHighlevel bitstream structure:==============================--------------------------------------------|Header|--------------------------------------------|------------------------------------|||Block0||||split?||||yes no||||.........intra?||||:Block01:yes no||||:Block02:.................||||:Block03::y DC::ref index:||||:Block04::cb DC::motion x:||||.........:cr DC::motion y:||||.................|||------------------------------------||------------------------------------|||Block1|||...|--------------------------------------------|------------------------------------|||Y subbands||Cb subbands||Cr subbands||||------||------||------|||||LL0||HL0||||LL0||HL0||||LL0||HL0|||||------||------||------||||------||------||------|||||LH0||HH0||||LH0||HH0||||LH0||HH0|||||------||------||------||||------||------||------|||||HL1||LH1||||HL1||LH1||||HL1||LH1|||||------||------||------||||------||------||------|||||HH1||HL2||||HH1||HL2||||HH1||HL2|||||...||...||...|||------------------------------------|--------------------------------------------Decoding process:=================------------|||Subbands|------------||||------------|Intra DC||||LL0 subband prediction------------|\Dequantization-------------------\||Reference frames|\IDWT|--------------|Motion\|||Frame 0||Frame 1||Compensation.OBMC v-------|--------------|--------------.\------> Frame n output Frame Frame<----------------------------------/|...|-------------------Range Coder:============Binary Range Coder:-------------------The implemented range coder is an adapted version based upon"Range encoding: an algorithm for removing redundancy from a digitised message."by G.N.N.Martin.The symbols encoded by the Snow range coder are bits(0|1).The associated probabilities are not fix but change depending on the symbol mix seen so far.bit seen|new state---------+-----------------------------------------------0|256-state_transition_table[256-old_state];1|state_transition_table[old_state];state_transition_table={0, 0, 0, 0, 0, 0, 0, 0, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 190, 191, 192, 194, 194, 195, 196, 197, 198, 199, 200, 201, 202, 202, 204, 205, 206, 207, 208, 209, 209, 210, 211, 212, 213, 215, 215, 216, 217, 218, 219, 220, 220, 222, 223, 224, 225, 226, 227, 227, 229, 229, 230, 231, 232, 234, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 248, 0, 0, 0, 0, 0, 0, 0};FIXME Range Coding of integers:-------------------------FIXME Neighboring Blocks:===================left and top are set to the respective blocks unless they are outside of the image in which case they are set to the Null block top-left is set to the top left block unless it is outside of the image in which case it is set to the left block if this block has no larger parent block or it is at the left side of its parent block and the top right block is not outside of the image then the top right block is used for top-right else the top-left block is used Null block y, cb, cr are 128 level, ref, mx and my are 0 Motion Vector Prediction:=========================1.the motion vectors of all the neighboring blocks are scaled to compensate for the difference of reference frames scaled_mv=(mv *(256 *(current_reference+1)/(mv.reference+1))+128)> the median of the scaled left
Definition: snow.txt:206
mode
Use these values in ebur128_init (or&#39;ed).
Definition: ebur128.h:83

Definition at line 351 of file vf_fillborders.c.

const AVFilterPad fillborders_inputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_input,
.filter_frame = filter_frame,
.needs_writable = 1,
},
{ NULL }
}
#define NULL
Definition: coverity.c:32
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
static int config_input(AVFilterLink *inlink)

Definition at line 366 of file vf_fillborders.c.

const AVFilterPad fillborders_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}
#define NULL
Definition: coverity.c:32

Definition at line 377 of file vf_fillborders.c.

AVFilter ff_vf_fillborders
Initial value:
= {
.name = "fillborders",
.description = NULL_IF_CONFIG_SMALL("Fill borders of the input video."),
.priv_size = sizeof(FillBordersContext),
.priv_class = &fillborders_class,
}
static const AVFilterPad fillborders_inputs[]
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:125
#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 int query_formats(AVFilterContext *ctx)
static const AVFilterPad fillborders_outputs[]
#define flags(name, subs,...)
Definition: cbs_av1.c:561

Definition at line 385 of file vf_fillborders.c.