vf_boxblur.c File Reference

Apply a boxblur filter to the input video. More...

#include "libavutil/avstring.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	FilterParam
struct	BoxBlurContext

Macros
#define	OFFSET(x)   offsetof(BoxBlurContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
#define	Y   0
#define	U   1
#define	V   2
#define	A   3
#define	EVAL_RADIUS_EXPR(comp)
#define	CHECK_RADIUS_VAL(w_, h_, comp)

Enumerations
enum	var_name {   VAR_B1, VAR_B2, VAR_S1, VAR_S2,   VAR_T1, VAR_T2, VAR_NB, VAR_N,   VAR_T, VAR_S, VAR_VARS_NB, VAR_TB,   VAR_PTS, VAR_START_PTS, VAR_PREV_PTS, VAR_PREV_SELECTED_PTS,   VAR_T, VAR_START_T, VAR_PREV_T, VAR_PREV_SELECTED_T,   VAR_PICT_TYPE, VAR_PICT_TYPE_I, VAR_PICT_TYPE_P, VAR_PICT_TYPE_B,   VAR_PICT_TYPE_S, VAR_PICT_TYPE_SI, VAR_PICT_TYPE_SP, VAR_PICT_TYPE_BI,   VAR_INTERLACE_TYPE, VAR_INTERLACE_TYPE_P, VAR_INTERLACE_TYPE_T, VAR_INTERLACE_TYPE_B,   VAR_CONSUMED_SAMPLES_N, VAR_SAMPLES_N, VAR_SAMPLE_RATE, VAR_N,   VAR_SELECTED_N, VAR_PREV_SELECTED_N, VAR_KEY, VAR_POS,   VAR_SCENE, VAR_VARS_NB, VAR_FRAME_RATE, VAR_INTERLACED,   VAR_N, VAR_NB_CONSUMED_SAMPLES, VAR_NB_SAMPLES, VAR_POS,   VAR_PREV_INPTS, VAR_PREV_INT, VAR_PREV_OUTPTS, VAR_PREV_OUTT,   VAR_PTS, VAR_SAMPLE_RATE, VAR_STARTPTS, VAR_STARTT,   VAR_T, VAR_TB, VAR_RTCTIME, VAR_RTCSTART,   VAR_VARS_NB, VAR_AVTB, VAR_INTB, VAR_SR,   VAR_VARS_NB, VAR_W, VAR_H, VAR_CW,   VAR_CH, VAR_HSUB, VAR_VSUB, VARS_NB,   VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH,   VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH,   VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB,   VAR_VSUB, VAR_X, VAR_Y, VAR_N,   VAR_POS, VAR_T, VAR_VARS_NB, VAR_DAR,   VAR_HSUB, VAR_VSUB, VAR_LINE_H, VAR_LH,   VAR_MAIN_H, VAR_h, VAR_H, VAR_MAIN_W,   VAR_w, VAR_W, VAR_MAX_GLYPH_A, VAR_ASCENT,   VAR_MAX_GLYPH_D, VAR_DESCENT, VAR_MAX_GLYPH_H, VAR_MAX_GLYPH_W,   VAR_N, VAR_SAR, VAR_T, VAR_TEXT_H,   VAR_TH, VAR_TEXT_W, VAR_TW, VAR_X,   VAR_Y, VAR_VARS_NB, VAR_N, VAR_PTS,   VAR_R, VAR_T, VAR_TB, VAR_NB,   VAR_W, VAR_H, VAR_VAL, VAR_MAXVAL,   VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL, VAR_VARS_NB,   VAR_MAIN_W, VAR_MW, VAR_MAIN_H, VAR_MH,   VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H, VAR_OH,   VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,   VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,   VAR_OH, VAR_X, VAR_Y, VAR_A,   VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB,   VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,   VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,   VAR_OH, VAR_A, VAR_SAR, VAR_DAR,   VAR_HSUB, VAR_VSUB, VARS_NB, VAR_X,   VAR_Y, VAR_W, VAR_H, VAR_TIME,   VAR_SPEED, VAR_TEMPO, VAR_ORDER, VAR_PATTERN,   VAR_ROW, VAR_VARS_NB }

Functions
	AVFILTER_DEFINE_CLASS (boxblur)
static av_cold int	init (AVFilterContext *ctx, const char *args)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static void	blur (uint8_t *dst, int dst_step, const uint8_t *src, int src_step, int len, int radius)
static void	blur_power (uint8_t *dst, int dst_step, const uint8_t *src, int src_step, int len, int radius, int power, uint8_t *temp[2])
static void	hblur (uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int w, int h, int radius, int power, uint8_t *temp[2])
static void	vblur (uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int w, int h, int radius, int power, uint8_t *temp[2])
static int	filter_frame (AVFilterLink *inlink, AVFilterBufferRef *in)

Variables
static const char *const	var_names []
static const AVOption	boxblur_options []
static const AVFilterPad	avfilter_vf_boxblur_inputs []
static const AVFilterPad	avfilter_vf_boxblur_outputs []
AVFilter	avfilter_vf_boxblur

Detailed Description

Apply a boxblur filter to the input video.

Ported from MPlayer libmpcodecs/vf_boxblur.c.

Definition in file vf_boxblur.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(BoxBlurContext, x)

Definition at line 76 of file vf_boxblur.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 77 of file vf_boxblur.c.

#define Y   0

Definition at line 100 of file vf_boxblur.c.

Referenced by altivec_uyvy_rgb32(), aura_decode_frame(), config_input(), config_props(), decode_frame(), draw_frame(), filter_frame(), init(), main(), rgb24toyv12_c(), rv30_loop_filter(), rv34_mc(), rv40_loop_filter(), sbr_hf_apply_noise(), sbr_hf_apply_noise_0(), sbr_hf_apply_noise_1(), sbr_hf_apply_noise_2(), sbr_hf_apply_noise_3(), sbr_hf_g_filt_c(), tm2_decode_blocks(), tm2_hi_res_block(), tm2_low_res_block(), tm2_med_res_block(), tm2_motion_block(), tm2_null_res_block(), tm2_still_block(), tm2_update_block(), ulti_decode_frame(), vc1_pred_b_mv(), vc1_pred_mv(), yuv2gbrp_full_X_c(), yuv2mono_1_c_template(), yuv2mono_2_c_template(), and yuv2rgb_full_X_c_template().

#define U   1

Definition at line 101 of file vf_boxblur.c.

#define V   2

Definition at line 102 of file vf_boxblur.c.

#define A   3

Definition at line 103 of file vf_boxblur.c.

#define EVAL_RADIUS_EXPR

(

comp

)

Value:

expr = boxblur->comp##_param.radius_expr;                           \
    ret = av_expr_parse_and_eval(&res, expr, var_names, var_values,     \
                                 NULL, NULL, NULL, NULL, NULL, 0, ctx); \
    boxblur->comp##_param.radius = res;                                 \
    if (ret < 0) {                                                      \
        av_log(NULL, AV_LOG_ERROR,                                      \
               "Error when evaluating " #comp " radius expression '%s'\n", expr); \
        return ret;                                                     \
    }

Referenced by config_input().

#define CHECK_RADIUS_VAL	(		w_,
			h_,
			comp
	)

Value:

if (boxblur->comp##_param.radius < 0 ||                             \
        2*boxblur->comp##_param.radius > FFMIN(w_, h_)) {               \
        av_log(ctx, AV_LOG_ERROR,                                       \
               "Invalid " #comp " radius value %d, must be >= 0 and <= %d\n", \
               boxblur->comp##_param.radius, FFMIN(w_, h_)/2);          \
        return AVERROR(EINVAL);                                         \
    }

Referenced by config_input().

Enumeration Type Documentation

enum var_name

Enumerator:

VAR_B1
VAR_B2
VAR_S1
VAR_S2
VAR_T1
VAR_T2
VAR_NB
VAR_N
VAR_T
VAR_S
VAR_VARS_NB
VAR_TB
VAR_PTS
VAR_START_PTS
VAR_PREV_PTS
VAR_PREV_SELECTED_PTS
VAR_T
VAR_START_T
VAR_PREV_T
VAR_PREV_SELECTED_T
VAR_PICT_TYPE
VAR_PICT_TYPE_I
VAR_PICT_TYPE_P
VAR_PICT_TYPE_B
VAR_PICT_TYPE_S
VAR_PICT_TYPE_SI
VAR_PICT_TYPE_SP
VAR_PICT_TYPE_BI
VAR_INTERLACE_TYPE
VAR_INTERLACE_TYPE_P
VAR_INTERLACE_TYPE_T
VAR_INTERLACE_TYPE_B
VAR_CONSUMED_SAMPLES_N
VAR_SAMPLES_N
VAR_SAMPLE_RATE
VAR_N
VAR_SELECTED_N
VAR_PREV_SELECTED_N
VAR_KEY
VAR_POS
VAR_SCENE
VAR_VARS_NB
VAR_FRAME_RATE
VAR_INTERLACED
VAR_N
VAR_NB_CONSUMED_SAMPLES
VAR_NB_SAMPLES
VAR_POS
VAR_PREV_INPTS
VAR_PREV_INT
VAR_PREV_OUTPTS
VAR_PREV_OUTT
VAR_PTS
VAR_SAMPLE_RATE
VAR_STARTPTS
VAR_STARTT
VAR_T
VAR_TB
VAR_RTCTIME
VAR_RTCSTART
VAR_VARS_NB
VAR_AVTB
VAR_INTB
VAR_SR
VAR_VARS_NB
VAR_W
VAR_H
VAR_CW
VAR_CH
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_X
VAR_Y
VAR_N
VAR_POS
VAR_T
VAR_VARS_NB
VAR_DAR
VAR_HSUB
VAR_VSUB
VAR_LINE_H
VAR_LH
VAR_MAIN_H
VAR_h
VAR_H
VAR_MAIN_W
VAR_w
VAR_W
VAR_MAX_GLYPH_A
VAR_ASCENT
VAR_MAX_GLYPH_D
VAR_DESCENT
VAR_MAX_GLYPH_H
VAR_MAX_GLYPH_W
VAR_N
VAR_SAR
VAR_T
VAR_TEXT_H
VAR_TH
VAR_TEXT_W
VAR_TW
VAR_X
VAR_Y
VAR_VARS_NB
VAR_N
VAR_PTS
VAR_R
VAR_T
VAR_TB
VAR_NB
VAR_W
VAR_H
VAR_VAL
VAR_MAXVAL
VAR_MINVAL
VAR_NEGVAL
VAR_CLIPVAL
VAR_VARS_NB
VAR_MAIN_W
VAR_MW
VAR_MAIN_H
VAR_MH
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_X
VAR_Y
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_SAR
VAR_DAR
VAR_HSUB
VAR_VSUB
VARS_NB
VAR_X
VAR_Y
VAR_W
VAR_H
VAR_TIME
VAR_SPEED
VAR_TEMPO
VAR_ORDER
VAR_PATTERN
VAR_ROW
VAR_VARS_NB

Definition at line 48 of file vf_boxblur.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

boxblur

)

static av_cold int init ( AVFilterContext *  ctx, const char *  args  )

static

Definition at line 105 of file vf_boxblur.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 142 of file vf_boxblur.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 151 of file vf_boxblur.c.

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 166 of file vf_boxblur.c.

static void blur ( uint8_t *  dst, int  dst_step, const uint8_t *  src, int  src_step, int  len, int  radius  )

inlinestatic

Definition at line 238 of file vf_boxblur.c.

Referenced by blur_power().

static void blur_power ( uint8_t *  dst, int  dst_step, const uint8_t *  src, int  src_step, int  len, int  radius, int  power, uint8_t *  temp[2]  )

inlinestatic

Definition at line 279 of file vf_boxblur.c.

Referenced by hblur(), and vblur().

static void hblur ( uint8_t *  dst, int  dst_linesize, const uint8_t *  src, int  src_linesize, int  w, int  h, int  radius, int  power, uint8_t *  temp[2]  )

static

Definition at line 305 of file vf_boxblur.c.

Referenced by filter_frame().

static void vblur ( uint8_t *  dst, int  dst_linesize, const uint8_t *  src, int  src_linesize, int  w, int  h, int  radius, int  power, uint8_t *  temp[2]  )

static

Definition at line 318 of file vf_boxblur.c.

Referenced by filter_frame().

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

static

Definition at line 331 of file vf_boxblur.c.

Variable Documentation

const char* const var_names[]

static

Initial value:

= {
    "w",
    "h",
    "cw",
    "ch",
    "hsub",
    "vsub",
    NULL
}

Definition at line 38 of file vf_boxblur.c.

const AVOption boxblur_options[]

static

Initial value:

= {
    { "luma_radius", "set luma radius", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
    { "lr",          "set luma radius", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
    { "luma_power",  "set luma power",  OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },
    { "lp",          "set luma power",  OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },

    { "chroma_radius", "set chroma radius", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "cr",            "set chroma radius", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "chroma_power",  "set chroma power",  OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
    { "cp",            "set chroma power",  OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },

    { "alpha_radius", "set alpha radius", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "ar",           "set alpha radius", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "alpha_power",  "set alpha power",  OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
    { "ap",           "set alpha power",  OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },

    { NULL }
}

Definition at line 79 of file vf_boxblur.c.

const AVFilterPad avfilter_vf_boxblur_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 366 of file vf_boxblur.c.

const AVFilterPad avfilter_vf_boxblur_outputs[]

static

Initial value:

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

Definition at line 377 of file vf_boxblur.c.

AVFilter avfilter_vf_boxblur

Initial value:

= {
    .name          = "boxblur",
    .description   = NULL_IF_CONFIG_SMALL("Blur the input."),
    .priv_size     = sizeof(BoxBlurContext),
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,

    .inputs    = avfilter_vf_boxblur_inputs,
    .outputs   = avfilter_vf_boxblur_outputs,

    .priv_class = &boxblur_class,
}

Definition at line 385 of file vf_boxblur.c.