ffmpeg | branch: master | Anton Khirnov <an...@khirnov.net> | Wed May 27 
15:34:07 2020 +0200| [6bfac4ee6f512f7cb44a49a0bc783533ba5c36e6] | committer: 
Anton Khirnov

vf_scale: switch to child_class_iterate()

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6bfac4ee6f512f7cb44a49a0bc783533ba5c36e6
---

 libavfilter/vf_scale.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c
index 0348f19d33..f92529e7c8 100644
--- a/libavfilter/vf_scale.c
+++ b/libavfilter/vf_scale.c
@@ -882,10 +882,19 @@ static int process_command(AVFilterContext *ctx, const 
char *cmd, const char *ar
     return ret;
 }
 
+#if FF_API_CHILD_CLASS_NEXT
 static const AVClass *child_class_next(const AVClass *prev)
 {
     return prev ? NULL : sws_get_class();
 }
+#endif
+
+static const AVClass *child_class_iterate(void **iter)
+{
+    const AVClass *c = *iter ? NULL : sws_get_class();
+    *iter = (void*)(uintptr_t)c;
+    return c;
+}
 
 #define OFFSET(x) offsetof(ScaleContext, x)
 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
@@ -944,7 +953,10 @@ static const AVClass scale_class = {
     .option           = scale_options,
     .version          = LIBAVUTIL_VERSION_INT,
     .category         = AV_CLASS_CATEGORY_FILTER,
+#if FF_API_CHILD_CLASS_NEXT
     .child_class_next = child_class_next,
+#endif
+    .child_class_iterate = child_class_iterate,
 };
 
 static const AVFilterPad avfilter_vf_scale_inputs[] = {
@@ -984,7 +996,10 @@ static const AVClass scale2ref_class = {
     .option           = scale_options,
     .version          = LIBAVUTIL_VERSION_INT,
     .category         = AV_CLASS_CATEGORY_FILTER,
+#if FF_API_CHILD_CLASS_NEXT
     .child_class_next = child_class_next,
+#endif
+    .child_class_iterate = child_class_iterate,
 };
 
 static const AVFilterPad avfilter_vf_scale2ref_inputs[] = {

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