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lavfi: allow building without swscale.

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This commit is contained in:
Anton Khirnov
2012-06-13 10:10:31 +02:00
parent a488028362
commit 2f296e39a1
4 changed files with 13 additions and 9 deletions
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libavfilter/avfiltergraph.c
+7 -2
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@@ -213,11 +213,16 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx)
/* couldn't merge format lists. auto-insert conversion filter */
switch (link->type) {
case AVMEDIA_TYPE_VIDEO:
if (!(filter = avfilter_get_by_name("scale"))) {
av_log(log_ctx, AV_LOG_ERROR, "'scale' filter "
"not present, cannot convert pixel formats.\n");
return AVERROR(EINVAL);
}
snprintf(inst_name, sizeof(inst_name), "auto-inserted scaler %d",
scaler_count++);
snprintf(scale_args, sizeof(scale_args), "0:0:%s", graph->scale_sws_opts);
if ((ret = avfilter_graph_create_filter(&convert,
avfilter_get_by_name("scale"),
if ((ret = avfilter_graph_create_filter(&convert, filter,
inst_name, scale_args, NULL,
graph)) < 0)
return ret;