[FFmpeg-devel] [PATCH 1/2] lavfi: add FF_*LINK_IDX convenience macros.

[Nicolas George]

Signed-off-by: Nicolas George <nicolas.george at normalesup.org>
---
 libavfilter/internal.h |    8 ++++++++
 1 file changed, 8 insertions(+)


Fixed: even for nice-looking alignment, spaces between a macro name and its
argument list are not permitted.


diff --git a/libavfilter/internal.h b/libavfilter/internal.h
index d1bcb03..40c3f4a 100644
--- a/libavfilter/internal.h
+++ b/libavfilter/internal.h
@@ -347,4 +347,12 @@ int ff_request_frame(AVFilterLink *link);
         .category   = AV_CLASS_CATEGORY_FILTER, \
     }
 
+/**
+ * Find the index of a link.
+ *
+ * I.e. find i such that link == ctx->(in|out)puts[i]
+ */
+#define FF_INLINK_IDX(link)  ((int)((link)->dstpad - (link)->dst->input_pads))
+#define FF_OUTLINK_IDX(link) ((int)((link)->srcpad - (link)->src->output_pads))
+
 #endif /* AVFILTER_INTERNAL_H */
-- 
1.7.10.4