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media: Check dynamically if the pipeline supports seeking
We should not depend on whether or not the pipeline state change returned NO_PREROLL or not. A media could dynamically change its element and switch from seekable to non seekable so it's best to test the seekable nature of the pipeline dynamically when we try to do a seek.
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@ -1251,6 +1251,7 @@ gst_rtsp_media_seek (GstRTSPMedia * media, GstRTSPTimeRange * range)
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gboolean res;
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GstClockTime start, stop;
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GstSeekType start_type, stop_type;
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GstQuery *query;
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klass = GST_RTSP_MEDIA_GET_CLASS (media);
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@ -1264,6 +1265,18 @@ gst_rtsp_media_seek (GstRTSPMedia * media, GstRTSPTimeRange * range)
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if (priv->status != GST_RTSP_MEDIA_STATUS_PREPARED)
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goto not_prepared;
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/* Update the seekable state of the pipeline in case it changed */
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query = gst_query_new_seeking (GST_FORMAT_TIME);
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if (gst_element_query (priv->pipeline, query)) {
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GstFormat format;
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gboolean seekable;
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gint64 start, end;
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gst_query_parse_seeking (query, &format, &seekable, &start, &end);
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priv->seekable = seekable;
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}
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gst_query_unref (query);
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if (!priv->seekable)
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goto not_seekable;
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