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Code Issues Releases Activity

vsrc_nullsrc: 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 7bc1a883c9
commit b7b3302f8f
1 changed files with 20 additions and 21 deletions
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41
libavfilter/vsrc_nullsrc.c
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@ -27,6 +27,7 @@
#include "libavutil/eval.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "formats.h"
@ -49,30 +50,12 @@ enum var_name {
};
typedef struct {
const AVClass *class;
int w, h;
char tb_expr[256];
char *tb_expr;
double var_values[VAR_VARS_NB];
} NullContext;
static int init(AVFilterContext *ctx, const char *args)
{
NullContext *priv = ctx->priv;
priv->w = 352;
priv->h = 288;
av_strlcpy(priv->tb_expr, "AVTB", sizeof(priv->tb_expr));
if (args)
sscanf(args, "%d:%d:%255[^:]", &priv->w, &priv->h, priv->tb_expr);
if (priv->w <= 0 || priv->h <= 0) {
av_log(ctx, AV_LOG_ERROR, "Non-positive size values are not acceptable.\n");
return AVERROR(EINVAL);
}
return 0;
}
static int config_props(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
@ -114,6 +97,22 @@ static int request_frame(AVFilterLink *link)
return -1;
}
#define OFFSET(x) offsetof(NullContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
static const AVOption options[] = {
{ "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 352 }, 1, INT_MAX, FLAGS },
{ "height", NULL, OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 288 }, 1, INT_MAX, FLAGS },
{ "timebase", NULL, OFFSET(tb_expr), AV_OPT_TYPE_STRING, { .str = "AVTB" }, 0, 0, FLAGS },
{ NULL },
};
static const AVClass nullsrc_class = {
.class_name = "nullsrc",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVFilterPad avfilter_vsrc_nullsrc_outputs[] = {
{
.name = "default",
@ -128,8 +127,8 @@ AVFilter avfilter_vsrc_nullsrc = {
.name = "nullsrc",
.description = NULL_IF_CONFIG_SMALL("Null video source, never return images."),
.init = init,
.priv_size = sizeof(NullContext),
.priv_class = &nullsrc_class,
.inputs = NULL,