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, AVFilterBufferRef *inpicref)

Variables
static const AVFilterPad	super2xsai_inputs []
static const AVFilterPad	super2xsai_outputs []
AVFilter	avfilter_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 248 of file vf_super2xsai.c.

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 292 of file vf_super2xsai.c.

static int filter_frame ( AVFilterLink *  inlink, AVFilterBufferRef *  inpicref  )

static

Definition at line 306 of file vf_super2xsai.c.

Variable Documentation

const AVFilterPad super2xsai_inputs[]

static

Initial value:

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

Definition at line 326 of file vf_super2xsai.c.

const AVFilterPad super2xsai_outputs[]

static

Initial value:

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

Definition at line 337 of file vf_super2xsai.c.

AVFilter avfilter_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),
    .query_formats = query_formats,
    .inputs        = super2xsai_inputs,
    .outputs       = super2xsai_outputs,
}

Definition at line 346 of file vf_super2xsai.c.