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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
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#include <gst/gst.h>
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static GstElement *src1, *src2, *sink, *pipeline, *bin;
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static gint state = 0;
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static gboolean
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notify (GstProbe *probe, GstData **data, gpointer user_data)
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{
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switch (state) {
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case 0:
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if (GST_BUFFER_TIMESTAMP (*data) == 10) {
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gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PAUSED);
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gst_element_unlink_pads (GST_ELEMENT (src1), "src", sink, "sink");
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gst_bin_add (GST_BIN (bin), src2);
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gst_bin_remove (GST_BIN (bin), src1);
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gst_element_link_pads (GST_ELEMENT (src2), "src", sink, "sink");
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gst_element_set_state (GST_ELEMENT (bin), GST_STATE_PLAYING);
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state++;
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gst_data_unref (*data);
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return FALSE;
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}
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break;
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case 1:
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GST_BUFFER_TIMESTAMP (*data) = GST_BUFFER_TIMESTAMP (*data) + 10;
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if (GST_BUFFER_TIMESTAMP (*data) == 20) {
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gst_data_unref (*data);
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*data = GST_DATA (gst_event_new (GST_EVENT_EOS));
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gst_element_set_state (src2, GST_STATE_PAUSED);
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return TRUE;
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}
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break;
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default:
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break;
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}
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return TRUE;
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}
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int
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main (int argc, gchar *argv[])
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{
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gst_init (&argc, &argv);
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pipeline = gst_pipeline_new ("main_pipeline");
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bin = gst_bin_new ("control");
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src1 = gst_element_factory_make ("fakesrc", "src1");
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src2 = gst_element_factory_make ("fakesrc", "src2");
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gst_bin_add (GST_BIN (bin), src1);
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sink = gst_element_factory_make ("fakesink", "sink");
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gst_bin_add (GST_BIN (pipeline), sink);
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gst_bin_add (GST_BIN (pipeline), bin);
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gst_element_link_pads (GST_ELEMENT (src1), "src", sink, "sink");
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g_signal_connect (pipeline, "deep_notify", G_CALLBACK (gst_element_default_deep_notify), NULL);
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g_signal_connect (pipeline, "error", G_CALLBACK (gst_element_default_error), NULL);
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gst_pad_add_probe (gst_element_get_pad (src1, "src"),
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gst_probe_new (FALSE,
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notify,
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NULL));
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gst_pad_add_probe (gst_element_get_pad (src2, "src"),
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gst_probe_new (FALSE,
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notify,
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NULL));
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
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while (gst_bin_iterate (GST_BIN (pipeline)));
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
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gst_object_unref (GST_OBJECT (pipeline));
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return 0;
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}
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