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vf_super2xsai.c File Reference

Super 2xSaI video filter Ported from MPlayer libmpcodecs/vf_2xsai.c. More...

#include "libavutil/pixdesc.h"
#include "libavutil/intreadwrite.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  Super2xSaIContext
 

Macros

#define GET_RESULT(A, B, C, D)   ((A != C || A != D) - (B != C || B != D))
 
#define INTERPOLATE(A, B)   (((A & hi_pixel_mask) >> 1) + ((B & hi_pixel_mask) >> 1) + (A & B & lo_pixel_mask))
 
#define Q_INTERPOLATE(A, B, C, D)
 
#define READ_COLOR4(dst, src_line, off)   dst = *((const uint32_t *)src_line + off)
 
#define READ_COLOR3(dst, src_line, off)   dst = AV_RL24 (src_line + 3*off)
 
#define READ_COLOR2(dst, src_line, off)   dst = sai->is_be ? AV_RB16(src_line + 2 * off) : AV_RL16(src_line + 2 * off)
 

Functions

static void super2xsai (AVFilterContext *ctx, uint8_t *src, int src_linesize, uint8_t *dst, int dst_linesize, int width, int height)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_input (AVFilterLink *inlink)
 
static int config_output (AVFilterLink *outlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *inpicref)
 

Variables

static const AVFilterPad super2xsai_inputs []
 
static const AVFilterPad super2xsai_outputs []
 
AVFilter ff_vf_super2xsai
 

Detailed Description

Super 2xSaI video filter Ported from MPlayer libmpcodecs/vf_2xsai.c.

Definition in file vf_super2xsai.c.

Macro Definition Documentation

#define GET_RESULT (   A,
  B,
  C,
  D 
)    ((A != C || A != D) - (B != C || B != D))

Definition at line 49 of file vf_super2xsai.c.

Referenced by super2xsai().

#define INTERPOLATE (   A,
  B 
)    (((A & hi_pixel_mask) >> 1) + ((B & hi_pixel_mask) >> 1) + (A & B & lo_pixel_mask))

Definition at line 51 of file vf_super2xsai.c.

Referenced by super2xsai().

#define Q_INTERPOLATE (   A,
  B,
  C,
  D 
)
Value:
((A & q_hi_pixel_mask) >> 2) + ((B & q_hi_pixel_mask) >> 2) + ((C & q_hi_pixel_mask) >> 2) + ((D & q_hi_pixel_mask) >> 2) \
+ ((((A & q_lo_pixel_mask) + (B & q_lo_pixel_mask) + (C & q_lo_pixel_mask) + (D & q_lo_pixel_mask)) >> 2) & q_lo_pixel_mask)

Definition at line 53 of file vf_super2xsai.c.

Referenced by super2xsai().

#define READ_COLOR4 (   dst,
  src_line,
  off 
)    dst = *((const uint32_t *)src_line + off)

Referenced by super2xsai().

#define READ_COLOR3 (   dst,
  src_line,
  off 
)    dst = AV_RL24 (src_line + 3*off)

Referenced by super2xsai().

#define READ_COLOR2 (   dst,
  src_line,
  off 
)    dst = sai->is_be ? AV_RB16(src_line + 2 * off) : AV_RL16(src_line + 2 * off)

Referenced by super2xsai().

Function Documentation

static void super2xsai ( AVFilterContext ctx,
uint8_t src,
int  src_linesize,
uint8_t dst,
int  dst_linesize,
int  width,
int  height 
)
static

Definition at line 56 of file vf_super2xsai.c.

Referenced by avfilter_register_all(), and filter_frame().

static int query_formats ( AVFilterContext ctx)
static

Definition at line 234 of file vf_super2xsai.c.

static int config_input ( AVFilterLink inlink)
static

Definition at line 250 of file vf_super2xsai.c.

static int config_output ( AVFilterLink outlink)
static

Definition at line 294 of file vf_super2xsai.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame inpicref 
)
static

Definition at line 308 of file vf_super2xsai.c.

Variable Documentation

const AVFilterPad super2xsai_inputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_input,
.filter_frame = filter_frame,
},
{ NULL }
}

Definition at line 328 of file vf_super2xsai.c.

const AVFilterPad super2xsai_outputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_output,
},
{ NULL }
}

Definition at line 338 of file vf_super2xsai.c.

AVFilter ff_vf_super2xsai
Initial value:
= {
.name = "super2xsai",
.description = NULL_IF_CONFIG_SMALL("Scale the input by 2x using the Super2xSaI pixel art algorithm."),
.priv_size = sizeof(Super2xSaIContext),
}

Definition at line 347 of file vf_super2xsai.c.