85 lines
3.5 KiB
C
85 lines
3.5 KiB
C
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#include <gst/gst.h>
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int main(int argc,char *argv[])
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{
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GstElement *pipeline,*audio_source,*tee,*audio_queue,*audio_convert,*audio_resample,*audio_sink;
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GstElement *video_queue,*visual,*video_convert,*video_sink;
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GstBus *bus;
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GstMessage *msg;
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GstPad *tee_audio_pad, *tee_video_pad;
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GstPad *queue_audio_pad,*queue_video_pad;
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GstPadTemplate *tee_audio_pad_template,*tee_video_pad_template;
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gst_init(&argc,&argv);
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audio_source = gst_element_factory_make("audiotestsrc","audio_source");
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tee = gst_element_factory_make("tee","tee");
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audio_queue = gst_element_factory_make("queue","audio_queue");
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audio_convert = gst_element_factory_make("audioconvert","audio_convert");
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audio_resample = gst_element_factory_make("audioresample","Audio_resample");
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audio_sink = gst_element_factory_make("autoaudiosink","audio_sink");
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video_queue = gst_element_factory_make("queue","vide_queue");
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visual = gst_element_factory_make("wavescope","visual");
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video_convert = gst_element_factory_make("videoconvert","csp");
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video_sink = gst_element_factory_make("autovideosink","video_sink");
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pipeline = gst_pipeline_new("test-pipeline");
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if( !pipeline ||!audio_source || !tee|| !audio_queue || !audio_convert || !audio_resample || !audio_sink ||
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!video_queue || !visual || !video_convert || !video_sink)
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{
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g_printerr("Not all elements could be created.\n");
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return -1;
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}
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g_object_set(audio_source,"freq",215.0f,NULL);
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g_object_set(visual,"shader",0,"style",1,NULL);
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gst_bin_add_many(GST_BIN(pipeline),audio_source,tee,audio_queue,audio_convert,audio_resample,
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audio_sink,video_queue,visual,video_convert,video_sink,NULL);
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if(gst_element_link_many(audio_source,tee,NULL)!= TRUE ||
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gst_element_link_many(audio_queue,audio_convert,audio_resample,audio_sink,NULL) != TRUE ||
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gst_element_link_many(video_queue,visual,video_convert,video_sink,NULL) != TRUE )
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{
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g_printerr("Elements could not be linked.\n");
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g_object_unref(pipeline);
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return -1;
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}
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// tee_audio_pad_template = gst_element_class_get_pad_template(GST_ELEMENT_GET_CLASS(tee),"src%d");
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tee_audio_pad = gst_element_get_request_pad(tee,"src_%u");
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g_print("Obtained request pad %s for audio branch.\n",gst_pad_get_name(tee_audio_pad));
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// tee_video_pad_template = gst_element_class_get_pad_template(GST_ELEMENT_CLASS(tee),"src%d");
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queue_audio_pad = gst_element_get_static_pad(audio_queue,"sink");
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tee_video_pad = gst_element_get_request_pad(tee,"src_%u");
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g_print("Obtained request pad %s for video branch",gst_pad_get_name(tee_video_pad));
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queue_video_pad = gst_element_get_static_pad(video_queue,"sink");
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if(gst_pad_link(tee_audio_pad,queue_audio_pad) != GST_PAD_LINK_OK ||
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gst_pad_link(tee_video_pad,queue_video_pad) != GST_PAD_LINK_OK)
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{
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g_printerr("Tee could not be linked!\n");
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return -1;
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}
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gst_object_unref(queue_audio_pad);
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gst_object_unref(queue_video_pad);
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gst_element_set_state(pipeline,GST_STATE_PLAYING);
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bus = gst_element_get_bus(pipeline);
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msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE,GST_MESSAGE_ERROR | GST_MESSAGE_EOS);
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gst_element_release_request_pad(tee,tee_audio_pad);
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gst_element_release_request_pad(tee,tee_video_pad);
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gst_object_unref(tee_audio_pad);
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gst_object_unref(tee_video_pad);
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if(msg != NULL)
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gst_message_unref(msg);
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gst_object_unref(bus);
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gst_element_set_state(pipeline,GST_STATE_NULL);
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gst_object_unref(pipeline);
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return 0;
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}
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