From 9241cd2095fe8395e02be5556d657d06f65ba91f Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Sun, 12 Dec 2010 13:39:16 +0000
Subject: [PATCH] Make avfilter_parse_graph() output a more meaningful message
when an invalid filterchain is detected.
Originally committed as revision 25936 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavfilter/graphparser.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/libavfilter/graphparser.c b/libavfilter/graphparser.c
index 678b7bee702..add3019b5ce 100644
--- a/libavfilter/graphparser.c
+++ b/libavfilter/graphparser.c
@@ -338,6 +338,7 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
do {
AVFilterContext *filter;
+ const char *filterchain = filters;
filters += strspn(filters, WHITESPACES);
if ((ret = parse_inputs(&filters, &curr_inputs, &open_outputs, log_ctx)) < 0)
@@ -365,8 +366,8 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
if (chr == ';' && curr_inputs) {
av_log(log_ctx, AV_LOG_ERROR,
- "Could not find a output to link when parsing \"%s\"\n",
- filters - 1);
+ "Invalid filterchain containing an unlabelled output pad: \"%s\"\n",
+ filterchain);
ret = AVERROR(EINVAL);
goto fail;
}
--
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