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avfilter/vf_edgedetect: add planes option

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2018-05-03 15:20:21 +02:00
parent d122c8b102
commit 0bcc66571a
2 changed files with 28 additions and 1 deletions
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4
doc/filters.texi
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@ -8280,8 +8280,10 @@ Mix the colors to create a paint/cartoon effect.
@item canny
Apply Canny edge detector on all selected planes.
@end table
Default value is @var{wires}.
@item planes
Select planes for filtering. By default all available planes are filtered.
@end table
@subsection Examples

25
libavfilter/vf_edgedetect.c
View File

@ -26,12 +26,21 @@
*/
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#define PLANE_R 0x4
#define PLANE_G 0x1
#define PLANE_B 0x2
#define PLANE_Y 0x1
#define PLANE_U 0x2
#define PLANE_V 0x4
#define PLANE_A 0x8
enum FilterMode {
MODE_WIRES,
MODE_COLORMIX,
@ -48,6 +57,7 @@ struct plane_info {
typedef struct EdgeDetectContext {
const AVClass *class;
struct plane_info planes[3];
int filter_planes;
int nb_planes;
double low, high;
uint8_t low_u8, high_u8;
@ -63,6 +73,13 @@ static const AVOption edgedetect_options[] = {
{ "wires", "white/gray wires on black", 0, AV_OPT_TYPE_CONST, {.i64=MODE_WIRES}, INT_MIN, INT_MAX, FLAGS, "mode" },
{ "colormix", "mix colors", 0, AV_OPT_TYPE_CONST, {.i64=MODE_COLORMIX}, INT_MIN, INT_MAX, FLAGS, "mode" },
{ "canny", "detect edges on planes", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CANNY}, INT_MIN, INT_MAX, FLAGS, "mode" },
{ "planes", "set planes to filter", OFFSET(filter_planes), AV_OPT_TYPE_FLAGS, {.i64=7}, 1, 0x7, FLAGS, "flags" },
{ "y", "filter luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags" },
{ "u", "filter u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags" },
{ "v", "filter v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags" },
{ "r", "filter red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags" },
{ "g", "filter green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags" },
{ "b", "filter blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags" },
{ NULL }
};
@ -322,6 +339,14 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
uint16_t *gradients = plane->gradients;
int8_t *directions = plane->directions;
if (!((1 << p) & edgedetect->filter_planes)) {
if (!direct)
av_image_copy_plane(out->data[p], out->linesize[p],
in->data[p], in->linesize[p],
inlink->w, inlink->h);
continue;
}
/* gaussian filter to reduce noise */
gaussian_blur(ctx, inlink->w, inlink->h,
tmpbuf, inlink->w,