func oggplayer() {
pipeline := C.gst_pipeline_new(toGStr("audio-player"))
source, err := NewElement("filesrc", "file-source")
if err != nil {
log.Fatal(err)
}
demuxer, err := NewElement("oggdemux", "ogg-demuxer")
if err != nil {
log.Fatal(err)
}
decoder, err := NewElement("vorbisdec", "vorbis-decoder")
if err != nil {
log.Fatal(err)
}
conv, err := NewElement("audioconvert", "converter")
if err != nil {
log.Fatal(err)
}
sink, err := NewElement("autoaudiosink", "audio-output")
if err != nil {
log.Fatal(err)
}
ObjSet(asGObj(source), "location", os.Args[1])
messages := PipelineWatchBus(asGstPipeline(pipeline))
BinAdd(pipeline, source, demuxer, decoder, conv, sink)
ElementLink(source, demuxer)
ElementLink(decoder, conv, sink)
ObjConnect(asGObj(demuxer), "pad-added", func(elem *C.GstElement, pad *C.GstPad) {
sink := C.gst_element_get_static_pad(decoder, toGStr("sink"))
C.gst_pad_link(pad, sink)
C.gst_object_unref(asGPtr(sink))
})
C.gst_element_set_state(pipeline, C.GST_STATE_PLAYING)
go func() {
for msg := range messages {
MessageDump(msg)
}
}()
go func() {
var pos, length C.gint64
for _ = range time.NewTicker(time.Second * 1).C {
C.gst_element_query_position(pipeline, C.GST_FORMAT_TIME, &pos)
C.gst_element_query_duration(pipeline, C.GST_FORMAT_TIME, &length)
p("%v / %v\n", time.Duration(pos), time.Duration(length))
if time.Duration(pos) > time.Second*5 {
C.gst_element_seek(pipeline, 1.0, C.GST_FORMAT_TIME, C.GST_SEEK_FLAG_FLUSH,
C.GST_SEEK_TYPE_SET, 10,
C.GST_SEEK_TYPE_NONE, C.GST_CLOCK_TIME_NONE)
}
}
}()
loop := C.g_main_loop_new(nil, False())
C.g_main_loop_run(loop)
}
// QueryPosition() is a wrapper around gst_element_query_position().
func (v *Element) QueryPosition(format Format) (cur int64, success bool) {
var ccur C.gint64
c := C.gst_element_query_position(v.native(), C.GstFormat(format), &ccur)
return int64(ccur), gobool(c)
}