libavfilter/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 "video.h"

Go to the source code of this file.

Data Structures
struct	Super2xSaIContext
Defines
#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	null_draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
static int	end_frame (AVFilterLink *inlink)
Variables
AVFilter	avfilter_vf_super2xsai

---

Detailed Description

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

Definition in file vf_super2xsai.c.

---

Define Documentation

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

Definition at line 48 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 50 of file vf_super2xsai.c.

#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 52 of file vf_super2xsai.c.

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().

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

Referenced by super2xsai().

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

Referenced by super2xsai().

---

Function Documentation

static int config_input

(

AVFilterLink *

inlink

)

[static]

Definition at line 247 of file vf_super2xsai.c.

static int config_output

(

AVFilterLink *

outlink

)

[static]

Definition at line 291 of file vf_super2xsai.c.

static int end_frame

(

AVFilterLink *

inlink

)

[static]

Definition at line 307 of file vf_super2xsai.c.

static int null_draw_slice	(	AVFilterLink *	inlink,
		int	y,
		int	h,
		int	slice_dir
	)			[static]

Definition at line 305 of file vf_super2xsai.c.

static int query_formats

(

AVFilterContext *

ctx

)

[static]

Definition at line 233 of file vf_super2xsai.c.

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 55 of file vf_super2xsai.c.

Referenced by avfilter_register_all(), and end_frame().

---

Variable Documentation

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 = (const AVFilterPad[]) {
        { .name             = "default",
          .type             = AVMEDIA_TYPE_VIDEO,
          .config_props     = config_input,
          .draw_slice       = null_draw_slice,
          .end_frame        = end_frame,
          .min_perms        = AV_PERM_READ },
        { .name = NULL }
    },
    .outputs = (const AVFilterPad[]) {
        { .name             = "default",
          .type             = AVMEDIA_TYPE_VIDEO,
          .config_props     = config_output },
        { .name = NULL }
    },
}

Definition at line 321 of file vf_super2xsai.c.