func (e *Element) LinkPads(pad_name string, dst *Element, dst_pad_name string) bool {
src_pname := (*C.gchar)(C.CString(pad_name))
defer C.free(unsafe.Pointer(src_pname))
dst_pname := (*C.gchar)(C.CString(dst_pad_name))
defer C.free(unsafe.Pointer(dst_pname))
return C.gst_element_link_pads(e.g(), src_pname, dst.g(), dst_pname) != 0
}
func play2() {
pipeline := C.gst_pipeline_new(toGStr("pipeline"))
source, err := NewElement("filesrc", "source")
if err != nil {
log.Fatal(err)
}
ObjSet(asGObj(source), "location", os.Args[1])
demux, err := NewElement("oggdemux", "demuxer")
if err != nil {
log.Fatal(err)
}
BinAdd(pipeline, source, demux)
C.gst_element_link_pads(source, toGStr("src"), demux, toGStr("sink"))
ObjConnect(asGObj(demux), "pad-added", func(demuxer *C.GstElement, pad *C.GstPad) {
p("pad added %T %v\n", pad, pad)
})
// bus
messages := PipelineWatchBus(asGstPipeline(pipeline))
C.gst_element_set_state(pipeline, C.GST_STATE_PLAYING)
loop := C.g_main_loop_new(nil, 0)
go func() {
loop:
for msg := range messages {
runtime.GC()
p("=> %s: %s\n", fromGStr(C.gst_object_get_name(asGstObj(msg.src))),
fromGStr(C.gst_message_type_get_name(msg._type)))
switch msg._type {
case C.GST_MESSAGE_ERROR:
var err *C.GError
var debug *C.gchar
C.gst_message_parse_error(msg, &err, &debug)
p("Error: %s\n%s\n", fromGStr(err.message), fromGStr(debug))
C.g_error_free(err)
C.g_free(asGPtr(debug))
C.g_main_loop_quit(loop)
break loop
case C.GST_MESSAGE_WARNING:
case C.GST_MESSAGE_INFO:
case C.GST_MESSAGE_EOS:
C.g_main_loop_quit(loop)
break loop
case C.GST_MESSAGE_TAG:
var tags *C.GstTagList
C.gst_message_parse_tag(msg, &tags)
//TagListForeach(tags, ) TODO
C.gst_tag_list_unref(tags)
case C.GST_MESSAGE_STATE_CHANGED:
var newState, oldState C.GstState
C.gst_message_parse_state_changed(msg, &oldState, &newState, nil)
p("%s -> %s\n", fromGStr(C.gst_element_state_get_name(oldState)),
fromGStr(C.gst_element_state_get_name(newState)))
}
C.gst_message_unref(msg)
}
p("loop break.\n")
}()
runtime.LockOSThread()
C.g_main_loop_run(loop)
p("quit.\n")
}