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avfilter/avf_avectorscope: switch to activate

This commit is contained in:
Paul B Mahol 2019-04-29 12:52:50 +02:00
parent 77aacdb036
commit 21b1f08ea2
1 changed files with 26 additions and 6 deletions
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32
libavfilter/avf_avectorscope.c
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@ -28,6 +28,7 @@
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
@ -69,6 +70,7 @@ typedef struct AudioVectorScopeContext {
int mirror;
unsigned prev_x, prev_y;
AVRational frame_rate;
int nb_samples;
} AudioVectorScopeContext;
#define OFFSET(x) offsetof(AudioVectorScopeContext, x)
@ -208,12 +210,8 @@ static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
AudioVectorScopeContext *s = ctx->priv;
int nb_samples;
nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
inlink->partial_buf_size =
inlink->min_samples =
inlink->max_samples = nb_samples;
s->nb_samples = FFMAX(1, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
return 0;
}
@ -365,6 +363,28 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
return ff_filter_frame(outlink, av_frame_clone(s->outpicref));
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
AudioVectorScopeContext *s = ctx->priv;
AVFrame *in;
int ret;
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
if (ret < 0)
return ret;
if (ret > 0)
return filter_frame(inlink, in);
FF_FILTER_FORWARD_STATUS(inlink, outlink);
FF_FILTER_FORWARD_WANTED(outlink, inlink);
return FFERROR_NOT_READY;
}
static av_cold void uninit(AVFilterContext *ctx)
{
AudioVectorScopeContext *s = ctx->priv;
@ -377,7 +397,6 @@ static const AVFilterPad audiovectorscope_inputs[] = {
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_input,
.filter_frame = filter_frame,
},
{ NULL }
};
@ -397,6 +416,7 @@ AVFilter ff_avf_avectorscope = {
.uninit = uninit,
.query_formats = query_formats,
.priv_size = sizeof(AudioVectorScopeContext),
.activate = activate,
.inputs = audiovectorscope_inputs,
.outputs = audiovectorscope_outputs,
.priv_class = &avectorscope_class,