lavdev/lavfi: correctly set the inout pad index when linking a filter to the output sink
In lavfi_read_header(), use the pad index designated in the inout for linking an output to a sink, rather than always 0. Fix link creation for filters with more than one output (e.g. the split filter).
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@ -178,7 +178,7 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx,
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pix_fmts, lavfi->graph)) < 0)
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FAIL(ret);
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lavfi->sinks[i] = sink;
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if ((ret = avfilter_link(inout->filter_ctx, 0, sink, 0)) < 0)
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if ((ret = avfilter_link(inout->filter_ctx, inout->pad_idx, sink, 0)) < 0)
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FAIL(ret);
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}
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