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90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
#include <gst/gst.h>
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/* This app uses a filter to connect colorspace and videosink
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* so that only RGB data can pass the connection, colorspace will use
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* a converter to convert the I420 data to RGB. Without a filter, this
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* connection would use the I420 format (assuming Xv is enabled) */
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static void
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new_pad_func (GstElement * element, GstPad * newpad, gpointer data)
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{
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GstElement *pipeline = (GstElement *) data;
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GstElement *queue = gst_bin_get_by_name (GST_BIN (pipeline), "queue");
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if (!strcmp (gst_pad_get_name (newpad), "video_00")) {
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gst_element_set_state (pipeline, GST_STATE_PAUSED);
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gst_pad_link (newpad, gst_element_get_pad (queue, "sink"));
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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}
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}
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gint
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main (gint argc, gchar * argv[])
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{
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GstElement *pipeline;
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GstElement *filesrc;
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GstElement *demux;
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GstElement *thread;
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GstElement *queue;
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GstElement *mpeg2dec;
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GstElement *colorspace;
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GstElement *xvideosink;
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gboolean res;
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gst_init (&argc, &argv);
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if (argc < 2) {
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g_print ("usage: %s <mpeg1 system stream>\n", argv[0]);
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return (-1);
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}
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pipeline = gst_pipeline_new ("main_pipeline");
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filesrc = gst_element_factory_make ("filesrc", "filesrc");
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g_return_val_if_fail (filesrc, -1);
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g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
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demux = gst_element_factory_make ("mpegdemux", "demux");
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g_return_val_if_fail (demux, -1);
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g_signal_connect (G_OBJECT (demux), "new_pad", G_CALLBACK (new_pad_func),
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pipeline);
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thread = gst_thread_new ("thread");
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queue = gst_element_factory_make ("queue", "queue");
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mpeg2dec = gst_element_factory_make ("mpeg2dec", "mpeg2dec");
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g_return_val_if_fail (mpeg2dec, -1);
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colorspace = gst_element_factory_make ("colorspace", "colorspace");
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g_return_val_if_fail (colorspace, -1);
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xvideosink = gst_element_factory_make ("xvideosink", "xvideosink");
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g_return_val_if_fail (xvideosink, -1);
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g_object_set (G_OBJECT (xvideosink), "toplevel", TRUE, NULL);
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gst_bin_add (GST_BIN (pipeline), filesrc);
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gst_bin_add (GST_BIN (pipeline), demux);
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gst_bin_add (GST_BIN (thread), queue);
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gst_bin_add (GST_BIN (thread), mpeg2dec);
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gst_bin_add (GST_BIN (thread), colorspace);
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gst_bin_add (GST_BIN (thread), xvideosink);
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gst_bin_add (GST_BIN (pipeline), thread);
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gst_element_link (filesrc, "src", demux, "sink");
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gst_element_link (queue, "src", mpeg2dec, "sink");
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gst_element_link (mpeg2dec, "src", colorspace, "sink");
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/* force RGB data passing between colorspace and xvideosink */
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res = gst_element_link_filtered (colorspace, "src", xvideosink, "sink",
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GST_CAPS_NEW ("filtercaps",
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"video/raw", "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB "))
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));
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if (!res) {
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g_print ("could not connect colorspace and xvideosink\n");
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return -1;
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}
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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while (gst_bin_iterate (GST_BIN (pipeline)));
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gst_element_set_state (pipeline, GST_STATE_NULL);
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return 0;
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}
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