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vf_cropdetect: switch to an AVOptions-based system.

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This commit is contained in:
Anton Khirnov 2013-02-25 21:21:29 +01:00
parent fba0156af7
commit 460e7b4f6d
2 changed files with 21 additions and 10 deletions
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5
doc/filters.texi
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@ -742,10 +742,7 @@ Calculate necessary cropping parameters and prints the recommended
parameters through the logging system. The detected dimensions
correspond to the non-black area of the input video.
It accepts the syntax:
@example
cropdetect[=@var{limit}[:@var{round}[:@var{reset}]]]
@end example
This filter accepts the following options:
@table @option

26
libavfilter/vf_cropdetect.c
View File

@ -27,12 +27,15 @@
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
typedef struct {
const AVClass *class;
int x1, y1, x2, y2;
int limit;
int round;
@ -87,14 +90,8 @@ static av_cold int init(AVFilterContext *ctx, const char *args)
{
CropDetectContext *cd = ctx->priv;
cd->limit = 24;
cd->round = 0;
cd->reset_count = 0;
cd->frame_nb = -2;
if (args)
sscanf(args, "%d:%d:%d", &cd->limit, &cd->round, &cd->reset_count);
av_log(ctx, AV_LOG_VERBOSE, "limit:%d round:%d reset_count:%d\n",
cd->limit, cd->round, cd->reset_count);
@ -196,6 +193,22 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
#define OFFSET(x) offsetof(CropDetectContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
static const AVOption options[] = {
{ "limit", "Threshold below which the pixel is considered black", OFFSET(limit), AV_OPT_TYPE_INT, { .i64 = 24 }, 0, INT_MAX, FLAGS },
{ "round", "Value by which the width/height should be divisible", OFFSET(round), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
{ "reset", "Recalculate the crop area after this many frames", OFFSET(reset_count), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
{ NULL },
};
static const AVClass cropdetect_class = {
.class_name = "cropdetect",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVFilterPad avfilter_vf_cropdetect_inputs[] = {
{
.name = "default",
@ -220,6 +233,7 @@ AVFilter avfilter_vf_cropdetect = {
.description = NULL_IF_CONFIG_SMALL("Auto-detect crop size."),
.priv_size = sizeof(CropDetectContext),
.priv_class = &cropdetect_class,
.init = init,
.query_formats = query_formats,