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Make avfilter_graph_parse() always return meaningful error codes. 

Originally committed as revision 25699 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-11-07 18:40:14 +00:00
parent 0cc8b65950
commit c24f76b948
1 changed files with 12 additions and 10 deletions
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22
libavfilter/graphparser.c
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@ -316,7 +316,7 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
AVFilterInOut *open_inputs,
AVFilterInOut *open_outputs, AVClass *log_ctx)
{
int index = 0;
int index = 0, ret;
char chr = 0;
AVFilterInOut *curr_inputs = NULL;
@ -325,24 +325,24 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
AVFilterContext *filter;
filters += strspn(filters, WHITESPACES);
if (parse_inputs(&filters, &curr_inputs, &open_outputs, log_ctx) < 0)
if ((ret = parse_inputs(&filters, &curr_inputs, &open_outputs, log_ctx)) < 0)
goto fail;
if (parse_filter(&filter, &filters, graph, index, log_ctx) < 0)
if ((ret = parse_filter(&filter, &filters, graph, index, log_ctx)) < 0)
goto fail;
if (filter->input_count == 1 && !curr_inputs && !index) {
/* First input can be omitted if it is "[in]" */
const char *tmp = "[in]";
if(parse_inputs(&tmp, &curr_inputs, &open_outputs, log_ctx) < 0)
if ((ret = parse_inputs(&tmp, &curr_inputs, &open_outputs, log_ctx)) < 0)
goto fail;
}
if (link_filter_inouts(filter, &curr_inputs, &open_inputs, log_ctx) < 0)
if ((ret = link_filter_inouts(filter, &curr_inputs, &open_inputs, log_ctx)) < 0)
goto fail;
if (parse_outputs(&filters, &curr_inputs, &open_inputs, &open_outputs,
log_ctx) < 0)
if ((ret = parse_outputs(&filters, &curr_inputs, &open_inputs, &open_outputs,
log_ctx)) < 0)
goto fail;
filters += strspn(filters, WHITESPACES);
@ -352,6 +352,7 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
av_log(log_ctx, AV_LOG_ERROR,
"Could not find a output to link when parsing \"%s\"\n",
filters - 1);
ret = AVERROR(EINVAL);
goto fail;
}
index++;
@ -361,14 +362,15 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
av_log(log_ctx, AV_LOG_ERROR,
"Unable to parse graph description substring: \"%s\"\n",
filters - 1);
ret = AVERROR(EINVAL);
goto fail;
}
if (open_inputs && !strcmp(open_inputs->name, "out") && curr_inputs) {
/* Last output can be omitted if it is "[out]" */
const char *tmp = "[out]";
if (parse_outputs(&tmp, &curr_inputs, &open_inputs,
&open_outputs, log_ctx) < 0)
if ((ret = parse_outputs(&tmp, &curr_inputs, &open_inputs, &open_outputs,
log_ctx)) < 0)
goto fail;
}
@ -379,5 +381,5 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
free_inout(open_inputs);
free_inout(open_outputs);
free_inout(curr_inputs);
return -1;
return ret;
}