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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
#include <stdlib.h>
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#include <gst/gst.h>
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/* 1:1 copy of gstpropsprivate.h, needed for INFO events */
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#define GST_PROPS_ENTRY_IS_VARIABLE(a) (((GstPropsEntry*)(a))->propstype > GST_PROPS_VAR_ID)
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typedef struct _GstPropsEntry GstPropsEntry;
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struct _GstPropsEntry {
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GQuark propid;
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GstPropsId propstype;
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union {
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/* flat values */
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gboolean bool_data;
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guint32 fourcc_data;
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gint int_data;
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gfloat float_data;
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/* structured values */
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struct {
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GList *entries;
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} list_data;
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struct {
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gchar *string;
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} string_data;
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struct {
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gint min;
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gint max;
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} int_range_data;
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struct {
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gfloat min;
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gfloat max;
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} float_range_data;
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} data;
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};
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/* end gstpropsprivate.h */
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/* property output, stolen from gst-launch */
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static void
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print_props (gpointer data, gpointer user_data)
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{
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GstPropsEntry *entry = (GstPropsEntry *)data;
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GstElement *element = GST_ELEMENT (user_data);
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g_print ("%s: %s: ", gst_element_get_name (element),
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g_quark_to_string (entry->propid));
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switch (entry->propstype) {
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case GST_PROPS_INT_ID:
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g_print ("%d\n", entry->data.int_data);
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break;
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case GST_PROPS_STRING_ID:
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g_print ("%s\n", entry->data.string_data.string);
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break;
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case GST_PROPS_FLOAT_ID:
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g_print ("%f\n", entry->data.float_data);
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break;
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default:
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g_print ("unknown\n");
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}
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}
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static void
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event_func (GstElement *element, GstEvent *event)
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{
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GstProps *props;
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if (event == NULL)
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return;
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if (GST_EVENT_TYPE (event) == GST_EVENT_INFO) {
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props = GST_EVENT_INFO_PROPS (event);
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g_list_foreach (props->properties, print_props, GST_EVENT_SRC (event));
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}
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}
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/**
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* Test program for the autoplugger.
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* Uses new API extensions (2002-01-28), too.
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*
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* USAGE: spidertest <mediafile>
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* If mediafile can be recognized, xvideo and oss audio output are tried.
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*/
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int main(int argc,char *argv[])
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{
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GstElement *bin, *filesrc, *decoder, *osssink, *videosink;
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if (argc != 2) {
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g_print("usage: %s <file>\n", argv[0]);
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exit(-1);
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}
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gst_init(&argc,&argv);
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/* create a new bin to hold the elements */
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bin = gst_pipeline_new("pipeline");
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g_signal_connect (G_OBJECT (bin), "event", G_CALLBACK (event_func), NULL);
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/* create a disk reader */
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filesrc = gst_elementfactory_make("filesrc", "disk_source");
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g_object_set(G_OBJECT(filesrc),"location", argv[1], NULL);
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/* now it's time to get the decoder */
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decoder = gst_elementfactory_make("spider", "spider");
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if (!decoder) {
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g_print ("could not find plugin \"spider\"\n");
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exit (-2);
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}
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/* only use decoding plugins */
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g_object_set(G_OBJECT(decoder),"plugtype", 2, NULL);
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/* create video and audio sink */
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osssink = gst_elementfactory_make("osssink", "audio");
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videosink = gst_elementfactory_make("xvideosink", "video");
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if ((!osssink) || (!videosink)) {
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g_print ("could not create output plugins\n");
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exit (-3);
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}
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/* add objects to the main pipeline */
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gst_bin_add(GST_BIN(bin), filesrc);
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gst_bin_add(GST_BIN(bin), decoder);
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gst_bin_add(GST_BIN(bin), osssink);
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gst_bin_add(GST_BIN(bin), videosink);
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/* connect objects */
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if (!(gst_element_connect_elements(filesrc, decoder) &&
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gst_element_connect_elements(decoder, osssink) &&
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gst_element_connect_elements(decoder, videosink)))
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{
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g_print ("the pipeline could not be connected\n");
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exit (-4);
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}
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/* start playing */
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gst_element_set_state(bin, GST_STATE_PLAYING);
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while (gst_bin_iterate(GST_BIN(bin)));
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exit(0);
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}
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