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104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
#include <gst/gst.h>
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/*
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* this example uses tee, fakesrc, fakesink and lame
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*
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* it requests a new pad from tee and attaches lame and fakesink
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* after iterating
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* it requests another one
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* this is to test if the encoder is initialized ok when adding to a
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* pipe that has played
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*/
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static void
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error_callback (GObject *object, GstObject *orig, gchar *error)
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{
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g_print ("ERROR: %s: %s\n", GST_OBJECT_NAME (orig), error);
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}
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int
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main (int argc, char *argv[])
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{
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GstElement *pipeline;
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GstElement *src, *tee, *encoder1, *encoder2, *sink1, *sink2;
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GstPad *teepad1, *teepad2;
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GstCaps *caps;
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gst_init (&argc, &argv);
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/* create elements */
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if (!(pipeline = gst_elementfactory_make ("pipeline", "pipeline"))) return 1;
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if (!(src = gst_elementfactory_make ("fakesrc", "source"))) return 1;
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if (!(tee = gst_elementfactory_make ("tee", "tee"))) return 1;
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if (!(encoder1 = gst_elementfactory_make ("lame", "lame1"))) return 1;
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if (!(encoder2 = gst_elementfactory_make ("lame", "lame2"))) return 1;
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if (!(sink1 = gst_elementfactory_make ("fakesink", "sink1"))) return 1;
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if (!(sink2 = gst_elementfactory_make ("fakesink", "sink2"))) return 1;
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pipeline = gst_pipeline_new ("pipeline");
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g_signal_connect (pipeline, "error", G_CALLBACK (error_callback), NULL);
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/* set up input */
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g_print ("setting up input\n");
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gst_bin_add (GST_BIN (pipeline), src);
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gst_bin_add (GST_BIN (pipeline), tee);
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gst_pad_connect (gst_element_get_pad (src, "src"),
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gst_element_get_pad (tee, "sink"));
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/* set up fakesrc */
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g_object_set (G_OBJECT (src), "filltype", 3, NULL);
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g_object_set (G_OBJECT (src), "sizetype", 3, NULL);
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/* set caps on fakesrc */
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caps = GST_CAPS_NEW (
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"input audio",
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"audio/raw",
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"format", GST_PROPS_STRING ("int"),
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"rate", GST_PROPS_INT (44100),
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"width", GST_PROPS_INT (16),
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"depth", GST_PROPS_INT (16),
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"law", GST_PROPS_INT (0),
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"signed", GST_PROPS_BOOLEAN (TRUE),
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"channels", GST_PROPS_INT (1)
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);
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caps->fixed = TRUE;
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g_assert (caps != NULL);
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gst_element_set_state (pipeline, GST_STATE_READY);
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g_print ("Setting caps on fakesrc's src pad\n");
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if (! (gst_pad_try_set_caps (gst_element_get_pad (src, "src"), caps)))
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g_print ("Could not set caps !\n");
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/* request first pad from tee and connect */
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g_print ("attaching first output pipe to tee\n");
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teepad1 = gst_element_request_pad_by_name (tee, "src%d");
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gst_bin_add (GST_BIN (pipeline), encoder1);
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gst_bin_add (GST_BIN (pipeline), sink1);
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gst_pad_connect (teepad1, gst_element_get_pad (encoder1, "sink"));
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gst_pad_connect (gst_element_get_pad (encoder1, "src"),
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gst_element_get_pad (sink1, "sink"));
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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/* iterate */
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g_print ("iterate\n");
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gst_bin_iterate (GST_BIN (pipeline));
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gst_element_set_state (pipeline, GST_STATE_PAUSED);
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/* request second pad and connect */
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g_print ("attaching second output pipe to tee\n");
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teepad2 = gst_element_request_pad_by_name (tee, "src%d");
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gst_bin_add (GST_BIN (pipeline), encoder2);
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gst_bin_add (GST_BIN (pipeline), sink2);
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gst_pad_connect (teepad2, gst_element_get_pad (encoder2, "sink"));
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gst_pad_connect (gst_element_get_pad (encoder2, "src"),
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gst_element_get_pad (sink2, "sink"));
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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g_print ("iterate\n");
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gst_bin_iterate (GST_BIN (pipeline));
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g_print ("done\n");
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return 0;
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}
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