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[ffmpeg] / libavutil / opt.c

diff --git a/libavutil/opt.c b/libavutil/opt.c
index bf63bef2af27ae4358e0a4e7d4d8c34e73354702..7c53024d251e7ed8963a275f60f4714d5e5f8436 100644 (file)
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -56,9 +56,10 @@ const AVOption *av_next_option(void *obj, const AVOption *last)
 
 const AVOption *av_opt_next(void *obj, const AVOption *last)
 {
-    if (last && last[1].name) return ++last;
-    else if (last)            return NULL;
-    else                      return (*(AVClass**)obj)->option;
+    AVClass *class = *(AVClass**)obj;
+    if (!last && class->option[0].name) return class->option;
+    if (last && last[1].name)           return ++last;
+    return NULL;
 }
 
 static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum)
@@ -501,7 +502,8 @@ int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_
 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
 {
     const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
-    const AVOption *flag  = av_opt_find(obj, flag_name,  NULL, 0, 0);
+    const AVOption *flag  = av_opt_find(obj, flag_name,
+                                        field ? field->unit : NULL, 0, 0);
     int64_t res;
 
     if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||