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graphparser: allow specifying sws flags in the graph description.

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This commit is contained in:
Anton Khirnov
2012-04-09 06:13:53 +02:00
parent 4e781c25b7
commit 12e7e1d03e
2 changed files with 36 additions and 1 deletions
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29
libavfilter/graphparser.c
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@ -349,6 +349,30 @@ static int parse_outputs(const char **buf, AVFilterInOut **curr_inputs,
#else
#define log_ctx NULL
#endif
static int parse_sws_flags(const char **buf, AVFilterGraph *graph)
{
char *p = strchr(*buf, ';');
if (strncmp(*buf, "sws_flags=", 10))
return 0;
if (!p) {
av_log(log_ctx, AV_LOG_ERROR, "sws_flags not terminated with ';'.\n");
return AVERROR(EINVAL);
}
*buf += 4; // keep the 'flags=' part
av_freep(&graph->scale_sws_opts);
if (!(graph->scale_sws_opts = av_mallocz(p - *buf + 1)))
return AVERROR(ENOMEM);
av_strlcpy(graph->scale_sws_opts, *buf, p - *buf + 1);
*buf = p + 1;
return 0;
}
int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
AVFilterInOut **inputs,
AVFilterInOut **outputs)
@ -358,6 +382,11 @@ int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
AVFilterInOut *curr_inputs = NULL, *open_inputs = NULL, *open_outputs = NULL;
filters += strspn(filters, WHITESPACES);
if ((ret = parse_sws_flags(&filters, graph)) < 0)
goto fail;
do {
AVFilterContext *filter;
filters += strspn(filters, WHITESPACES);