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lavfi/graphparser: fix parsing error in case of NULL sws_opts addition 

If sws_opts was NULL it was resulting in the args being set to
"W:H:(null)", which with the new parsing code was generating a syntax
failure.
This commit is contained in:
Stefano Sabatini 2012-10-15 10:18:13 +02:00
parent 8c2dbc3805
commit 2969abd908
1 changed files with 2 additions and 1 deletions
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3
libavfilter/graphparser.c
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@ -123,7 +123,8 @@ static int create_filter(AVFilterContext **filt_ctx, AVFilterGraph *ctx, int ind
return ret;
}
if (!strcmp(filt_name, "scale") && args && !strstr(args, "flags")) {
if (!strcmp(filt_name, "scale") && args && !strstr(args, "flags")
&& ctx->scale_sws_opts) {
snprintf(tmp_args, sizeof(tmp_args), "%s:%s",
args, ctx->scale_sws_opts);
args = tmp_args;