From 8b2cd8e0e41284469cf1fb5051df329fb6d8d5c3 Mon Sep 17 00:00:00 2001
From: Nicolas George <george@nsup.org>
Date: Mon, 17 Jul 2017 17:00:23 +0200
Subject: [PATCH] lavfi/vf_displace: move to "activate" design.

---
 libavfilter/Makefile      |  2 +-
 libavfilter/vf_displace.c | 31 +++++++++++--------------------
 2 files changed, 12 insertions(+), 21 deletions(-)

diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 441e07843f..4d61d7835e 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -168,7 +168,7 @@ OBJS-$(CONFIG_DELOGO_FILTER)                 += vf_delogo.o
 OBJS-$(CONFIG_DESHAKE_FILTER)                += vf_deshake.o
 OBJS-$(CONFIG_DETELECINE_FILTER)             += vf_detelecine.o
 OBJS-$(CONFIG_DILATION_FILTER)               += vf_neighbor.o
-OBJS-$(CONFIG_DISPLACE_FILTER)               += vf_displace.o framesync.o
+OBJS-$(CONFIG_DISPLACE_FILTER)               += vf_displace.o framesync2.o
 OBJS-$(CONFIG_DOUBLEWEAVE_FILTER)            += vf_weave.o
 OBJS-$(CONFIG_DRAWBOX_FILTER)                += vf_drawbox.o
 OBJS-$(CONFIG_DRAWGRAPH_FILTER)              += f_drawgraph.o
diff --git a/libavfilter/vf_displace.c b/libavfilter/vf_displace.c
index 9daa0c9ddb..6100a249c6 100644
--- a/libavfilter/vf_displace.c
+++ b/libavfilter/vf_displace.c
@@ -23,7 +23,7 @@
 #include "libavutil/opt.h"
 #include "avfilter.h"
 #include "formats.h"
-#include "framesync.h"
+#include "framesync2.h"
 #include "internal.h"
 #include "video.h"
 
@@ -212,9 +212,9 @@ static int process_frame(FFFrameSync *fs)
     AVFrame *out, *in, *xpic, *ypic;
     int ret;
 
-    if ((ret = ff_framesync_get_frame(&s->fs, 0, &in,   0)) < 0 ||
-        (ret = ff_framesync_get_frame(&s->fs, 1, &xpic, 0)) < 0 ||
-        (ret = ff_framesync_get_frame(&s->fs, 2, &ypic, 0)) < 0)
+    if ((ret = ff_framesync2_get_frame(&s->fs, 0, &in,   0)) < 0 ||
+        (ret = ff_framesync2_get_frame(&s->fs, 1, &xpic, 0)) < 0 ||
+        (ret = ff_framesync2_get_frame(&s->fs, 2, &ypic, 0)) < 0)
         return ret;
 
     if (ctx->is_disabled) {
@@ -310,7 +310,7 @@ static int config_output(AVFilterLink *outlink)
     outlink->sample_aspect_ratio = srclink->sample_aspect_ratio;
     outlink->frame_rate = srclink->frame_rate;
 
-    ret = ff_framesync_init(&s->fs, ctx, 3);
+    ret = ff_framesync2_init(&s->fs, ctx, 3);
     if (ret < 0)
         return ret;
 
@@ -330,44 +330,35 @@ static int config_output(AVFilterLink *outlink)
     s->fs.opaque   = s;
     s->fs.on_event = process_frame;
 
-    return ff_framesync_configure(&s->fs);
+    return ff_framesync2_configure(&s->fs);
 }
 
-static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
+static int activate(AVFilterContext *ctx)
 {
-    DisplaceContext *s = inlink->dst->priv;
-    return ff_framesync_filter_frame(&s->fs, inlink, buf);
-}
-
-static int request_frame(AVFilterLink *outlink)
-{
-    DisplaceContext *s = outlink->src->priv;
-    return ff_framesync_request_frame(&s->fs, outlink);
+    DisplaceContext *s = ctx->priv;
+    return ff_framesync2_activate(&s->fs);
 }
 
 static av_cold void uninit(AVFilterContext *ctx)
 {
     DisplaceContext *s = ctx->priv;
 
-    ff_framesync_uninit(&s->fs);
+    ff_framesync2_uninit(&s->fs);
 }
 
 static const AVFilterPad displace_inputs[] = {
     {
         .name         = "source",
         .type         = AVMEDIA_TYPE_VIDEO,
-        .filter_frame = filter_frame,
         .config_props = config_input,
     },
     {
         .name         = "xmap",
         .type         = AVMEDIA_TYPE_VIDEO,
-        .filter_frame = filter_frame,
     },
     {
         .name         = "ymap",
         .type         = AVMEDIA_TYPE_VIDEO,
-        .filter_frame = filter_frame,
     },
     { NULL }
 };
@@ -377,7 +368,6 @@ static const AVFilterPad displace_outputs[] = {
         .name          = "default",
         .type          = AVMEDIA_TYPE_VIDEO,
         .config_props  = config_output,
-        .request_frame = request_frame,
     },
     { NULL }
 };
@@ -388,6 +378,7 @@ AVFilter ff_vf_displace = {
     .priv_size     = sizeof(DisplaceContext),
     .uninit        = uninit,
     .query_formats = query_formats,
+    .activate      = activate,
     .inputs        = displace_inputs,
     .outputs       = displace_outputs,
     .priv_class    = &displace_class,