lavfi/inernal: move ff_fmt_is_regular_yuv() declaration to video.h

libavfilter/avfiltergraph.c

@@ -40,6 +40,7 @@
 #include "formats.h"
 #include "framequeue.h"
 #include "internal.h"
+#include "video.h"
 
 #define OFFSET(x) offsetof(AVFilterGraph, x)
 #define F AV_OPT_FLAG_FILTERING_PARAM

libavfilter/buffersrc.c

@@ -39,6 +39,7 @@
 #include "filters.h"
 #include "formats.h"
 #include "internal.h"
+#include "video.h"
 
 typedef struct BufferSourceContext {
     const AVClass    *class;

libavfilter/internal.h

@@ -27,12 +27,6 @@
 #include "libavutil/internal.h"
 #include "avfilter.h"
 
-/**
- * Returns true if a pixel format is "regular YUV", which includes all pixel
- * formats that are affected by YUV colorspace negotiation.
- */
-int ff_fmt_is_regular_yuv(enum AVPixelFormat fmt);
-
 /**
  * Negotiate the media format, dimensions, etc of all inputs to a filter.
  *

libavfilter/video.h

@@ -45,4 +45,10 @@ AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h);
  */
 AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h);
 
+/**
+ * Returns true if a pixel format is "regular YUV", which includes all pixel
+ * formats that are affected by YUV colorspace negotiation.
+ */
+int ff_fmt_is_regular_yuv(enum AVPixelFormat fmt);
+
 #endif /* AVFILTER_VIDEO_H */