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avfilter/vf_framepack: switch to activate

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This commit is contained in:
Paul B Mahol 2019-11-16 23:53:39 +01:00
parent c22665ae69
commit 9db24ee26d
1 changed files with 45 additions and 38 deletions
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83
libavfilter/vf_framepack.c
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@ -33,6 +33,7 @@
#include "libavutil/stereo3d.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
@ -265,39 +266,6 @@ static av_always_inline void spatial_frame_pack(AVFilterLink *outlink,
}
}
static int try_push_frame(AVFilterContext *ctx);
static int filter_frame_left(AVFilterLink *inlink, AVFrame *frame)
{
FramepackContext *s = inlink->dst->priv;
s->input_views[LEFT] = frame;
return try_push_frame(inlink->dst);
}
static int filter_frame_right(AVFilterLink *inlink, AVFrame *frame)
{
FramepackContext *s = inlink->dst->priv;
s->input_views[RIGHT] = frame;
return try_push_frame(inlink->dst);
}
static int request_frame(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
FramepackContext *s = ctx->priv;
int ret, i;
/* get a frame on the either input, stop as soon as a video ends */
for (i = 0; i < 2; i++) {
if (!s->input_views[i]) {
ret = ff_request_frame(ctx->inputs[i]);
if (ret < 0)
return ret;
}
}
return 0;
}
static int try_push_frame(AVFilterContext *ctx)
{
FramepackContext *s = ctx->priv;
@ -359,6 +327,49 @@ static int try_push_frame(AVFilterContext *ctx)
}
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *outlink = ctx->outputs[0];
FramepackContext *s = ctx->priv;
int ret;
FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, ctx);
if (!s->input_views[0]) {
ret = ff_inlink_consume_frame(ctx->inputs[0], &s->input_views[0]);
if (ret < 0)
return ret;
}
if (!s->input_views[1]) {
ret = ff_inlink_consume_frame(ctx->inputs[1], &s->input_views[1]);
if (ret < 0)
return ret;
}
if (s->input_views[0] && s->input_views[1])
return try_push_frame(ctx);
FF_FILTER_FORWARD_STATUS(ctx->inputs[0], outlink);
FF_FILTER_FORWARD_STATUS(ctx->inputs[1], outlink);
if (ff_outlink_frame_wanted(ctx->outputs[0]) &&
!ff_outlink_get_status(ctx->inputs[0]) &&
!s->input_views[0]) {
ff_inlink_request_frame(ctx->inputs[0]);
return 0;
}
if (ff_outlink_frame_wanted(ctx->outputs[0]) &&
!ff_outlink_get_status(ctx->inputs[1]) &&
!s->input_views[1]) {
ff_inlink_request_frame(ctx->inputs[1]);
return 0;
}
return FFERROR_NOT_READY;
}
#define OFFSET(x) offsetof(FramepackContext, x)
#define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
static const AVOption framepack_options[] = {
@ -383,14 +394,10 @@ static const AVFilterPad framepack_inputs[] = {
{
.name = "left",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame_left,
.needs_fifo = 1,
},
{
.name = "right",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame_right,
.needs_fifo = 1,
},
{ NULL }
};
@ -400,7 +407,6 @@ static const AVFilterPad framepack_outputs[] = {
.name = "packed",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
};
@ -413,5 +419,6 @@ AVFilter ff_vf_framepack = {
.query_formats = query_formats,
.inputs = framepack_inputs,
.outputs = framepack_outputs,
.activate = activate,
.uninit = framepack_uninit,
};