avfilter: Constify all AVFilters

[ffmpeg] / libavfilter / f_metadata.c

diff --git a/libavfilter/f_metadata.c b/libavfilter/f_metadata.c
index bf298e9d395cd2ba97483f52de58e0785ab98cf0..5fec7c3c56606fe89e48b72ce4b6bd60f909f1fb 100644 (file)
--- a/libavfilter/f_metadata.c
+++ b/libavfilter/f_metadata.c
@@ -304,7 +304,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
     AVDictionary **metadata = &frame->metadata;
     AVDictionaryEntry *e;
 
-    if (!*metadata)
+    if (!*metadata && s->mode != METADATA_ADD)
         return ff_filter_frame(outlink, frame);
 
     e = av_dict_get(*metadata, !s->key ? "" : s->key, NULL,
@@ -383,7 +383,7 @@ static const AVFilterPad aoutputs[] = {
     { NULL }
 };
 
-AVFilter ff_af_ametadata = {
+const AVFilter ff_af_ametadata = {
     .name          = "ametadata",
     .description   = NULL_IF_CONFIG_SMALL("Manipulate audio frame metadata."),
     .priv_size     = sizeof(MetadataContext),
@@ -418,7 +418,7 @@ static const AVFilterPad outputs[] = {
     { NULL }
 };
 
-AVFilter ff_vf_metadata = {
+const AVFilter ff_vf_metadata = {
     .name        = "metadata",
     .description = NULL_IF_CONFIG_SMALL("Manipulate video frame metadata."),
     .priv_size   = sizeof(MetadataContext),