Apply a boxblur filter to the input video. More...
#include "libavutil/avstring.h"#include "libavutil/eval.h"#include "libavutil/pixdesc.h"#include "avfilter.h"Go to the source code of this file.
Apply a boxblur filter to the input video.
Ported from MPlayer libmpcodecs/vf_boxblur.c.
Definition in file vf_boxblur.c.
| #define A 3 |
Definition at line 75 of file vf_boxblur.c.
| #define CHECK_RADIUS_VAL | ( | w_, | ||
| h_, | ||||
| comp | ||||
| ) |
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().
| #define EVAL_RADIUS_EXPR | ( | comp | ) |
expr = boxblur->comp##_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 U 1 |
Definition at line 73 of file vf_boxblur.c.
| #define V 2 |
Definition at line 74 of file vf_boxblur.c.
| #define Y 0 |
Definition at line 72 of file vf_boxblur.c.
| enum var_name |
Definition at line 43 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 | |||
| ) | [inline, static] |
Definition at line 213 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] | |||
| ) | [inline, static] |
Definition at line 254 of file vf_boxblur.c.
| static int config_input | ( | AVFilterLink * | inlink | ) | [static] |
Definition at line 136 of file vf_boxblur.c.
| static void draw_slice | ( | AVFilterLink * | inlink, | |
| int | y0, | |||
| int | h0, | |||
| int | slice_dir | |||
| ) | [static] |
Definition at line 306 of file vf_boxblur.c.
| 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 280 of file vf_boxblur.c.
Referenced by draw_slice().
| static av_cold int init | ( | AVFilterContext * | ctx, | |
| const char * | args, | |||
| void * | opaque | |||
| ) | [static] |
Definition at line 77 of file vf_boxblur.c.
| static int query_formats | ( | AVFilterContext * | ctx | ) | [static] |
Definition at line 121 of file vf_boxblur.c.
| static av_cold void uninit | ( | AVFilterContext * | ctx | ) | [static] |
Definition at line 113 of file vf_boxblur.c.
| 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 293 of file vf_boxblur.c.
Referenced by draw_slice().
{
.name = "boxblur",
.description = NULL_IF_CONFIG_SMALL("Blur the input."),
.priv_size = sizeof(BoxBlurContext),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.draw_slice = draw_slice,
.min_perms = AV_PERM_READ },
{ .name = NULL}},
.outputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO, },
{ .name = NULL}},
}
Definition at line 333 of file vf_boxblur.c.
const char* var_names[] [static] |
{
"w",
"h",
"cw",
"ch",
"hsub",
"vsub",
NULL
}
Definition at line 33 of file vf_boxblur.c.