gstreamer/test/mcut.c

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#include <gst/gst.h>
void eof(GstSrc *src) {
g_print("have eof, quitting\n");
exit(0);
}
int main(int argc,char *argv[]) {
GstType *type;
GList *factories;
GstElementFactory *parsefactory;
GstElement *bin, *src, *parse, *sink;
GList *padlist;
guchar *filename;
glong length = 0, size = 4180, skip = 8360, offset = 0;
if (argc == 2)
filename = argv[1];
else {
g_print("sorry, need a filename now\n");
exit(1);
}
gst_init(&argc,&argv);
gst_plugin_load_all();
bin = gst_bin_new("bin");
src = gst_asyncdisksrc_new("src");
g_print("created disksrc\n");
gtk_object_set(GTK_OBJECT(src),"location",filename,NULL);
length = gst_util_get_long_arg(GST_OBJECT(src),"length");
g_print("file is %d bytes long\n",length);
/* now it's time to get the parser */
type = gst_type_get_by_mime("audio/mp3");
factories = gst_type_get_sinks(type);
if (factories != NULL)
parsefactory = GST_ELEMENTFACTORY(factories->data);
else {
g_print("sorry, can't find anyone registered to sink 'mp3'\n");
return 1;
}
parse = gst_elementfactory_create(parsefactory,"parser");
if (parse == NULL) {
g_print("sorry, couldn't create parser\n");
return 1;
}
sink = gst_audiosink_new("audiosink");
gtk_signal_connect(GTK_OBJECT(src),"eof",
GTK_SIGNAL_FUNC(eof),NULL);
/* add objects to the main pipeline */
gst_bin_add(GST_BIN(bin),src);
gst_bin_add(GST_BIN(bin),parse);
gst_bin_add(GST_BIN(bin),sink);
/* connect src to sink */
gst_pad_connect(gst_element_get_pad(src,"src"),
gst_element_get_pad(parse,"sink"));
gst_pad_connect(gst_element_get_pad(parse,"src"),
gst_element_get_pad(sink,"sink"));
while(offset < length) {
gst_src_push_region(GST_SRC(src),offset,size);
offset += skip;
}
gst_object_destroy(GST_OBJECT(sink));
gst_object_destroy(GST_OBJECT(parse));
gst_object_destroy(GST_OBJECT(src));
gst_object_destroy(GST_OBJECT(bin));
}