vf_super2xsai.c File Reference

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

Go to the source code of this file.

Data Structures
struct	Super2xSaIContext
struct	ThreadData
	Used for passing data between threads. More...

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 = s->is_be ? AV_RB16(src_line + 2 * off) : AV_RL16(src_line + 2 * off)

Functions
static int	super2xsai (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	config_input (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)

Variables
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	super2xsai_inputs []
static const AVFilterPad	super2xsai_outputs []
const 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

GET_RESULT

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

Definition at line 52 of file vf_super2xsai.c.

INTERPOLATE

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

Definition at line 54 of file vf_super2xsai.c.

Q_INTERPOLATE

#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 56 of file vf_super2xsai.c.

READ_COLOR4

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

READ_COLOR3

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

READ_COLOR2

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

Function Documentation

super2xsai()

static int super2xsai ( AVFilterContext *  ctx, void *  arg, int  jobnr, int  nb_jobs  )

static

Definition at line 59 of file vf_super2xsai.c.

Referenced by filter_frame().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 255 of file vf_super2xsai.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 299 of file vf_super2xsai.c.

filter_frame()

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 313 of file vf_super2xsai.c.

Variable Documentation

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
    AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
    AV_PIX_FMT_RGB565BE, AV_PIX_FMT_BGR565BE, AV_PIX_FMT_RGB555BE, AV_PIX_FMT_BGR555BE,
    AV_PIX_FMT_RGB565LE, AV_PIX_FMT_BGR565LE, AV_PIX_FMT_RGB555LE, AV_PIX_FMT_BGR555LE,
    AV_PIX_FMT_NONE
}

Definition at line 247 of file vf_super2xsai.c.

super2xsai_inputs

const AVFilterPad super2xsai_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input,
        .filter_frame = filter_frame,
    },
}

Definition at line 335 of file vf_super2xsai.c.

super2xsai_outputs

const AVFilterPad super2xsai_outputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_output,
    },
}

Definition at line 344 of file vf_super2xsai.c.

ff_vf_super2xsai

const 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),
    FILTER_INPUTS(super2xsai_inputs),
    FILTER_OUTPUTS(super2xsai_outputs),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 352 of file vf_super2xsai.c.