Hi everyone,
I am trying writing Basic tutorial 3: Dynamic pipelines to TypeScript with node-gtk
But I always cannot recived ‘pad-added’
Am I doing something wrong?
No any log about it
I can play it with CLI: gst-launch-1.0 uridecodebin uri=https://gstreamer.freedesktop.org/data/media/sintel_trailer-480p.webm ! audioconvert ! audioresample ! autoaudiosink
Also I can recived ‘pad-added’ with C
Here is my code:
import Gst from '@girs/node-gst-1.0';
/* Structure to contain all our information, so we can pass it to callbacks */
type CustomData = {
source?: Gst.Element;
convert?: Gst.Element;
resample?: Gst.Element;
sink?: Gst.Element;
pipeline?: Gst.Pipeline;
};
(async function main() {
const data: CustomData = {};
let terminate = false;
/* Initialize GStreamer */
Gst.init(null);
/* Create the elements */
data.source = Gst.ElementFactory.make('uridecodebin', 'source');
data.convert = Gst.ElementFactory.make('audioconvert', 'convert');
data.resample = Gst.ElementFactory.make('audioresample', 'resample');
data.sink = Gst.ElementFactory.make('autoaudiosink', 'sink');
/* Create the empty pipeline */
data.pipeline = new Gst.Pipeline({ name: 'test-pipeline' });
if (
!data.source ||
!data.convert ||
!data.resample ||
!data.sink ||
!data.pipeline
) {
console.error('Not all elements could be created.');
return;
}
/* Build the pipeline. Note that we are NOT linking the source at this point. We will do it later. */
data.pipeline.add(data.source);
data.pipeline.add(data.convert);
data.pipeline.add(data.resample);
data.pipeline.add(data.sink);
if (!data.convert.link(data.resample) || !data.resample.link(data.sink)) {
console.error('Elements could not be linked.');
data.pipeline.unref();
return;
}
/* Set the URI to play */
data.source['uri'] =
'https://gstreamer.freedesktop.org/data/media/sintel_trailer-480p.webm';
/* Connect to the pad-added signal */
data.source.connect('pad-added', (pad: Gst.Pad) => {
padAddedHandler(data.source, pad, data);
});
/* Start playing */
const ret = data.pipeline.setState(Gst.State.PLAYING);
if (ret === Gst.StateChangeReturn.FAILURE) {
console.error('Unable to set the pipeline to the playing state.');
data.pipeline.unref();
throw new Error();
}
/* Listen to the bus */
const bus = data.pipeline.getBus();
do {
const msg = bus.timedPopFiltered(
Gst.CLOCK_TIME_NONE,
Gst.MessageType.STATE_CHANGED |
Gst.MessageType.ERROR |
Gst.MessageType.EOS,
);
/* Parse message */
if (msg) {
switch (msg.type) {
case Gst.MessageType.ERROR:
const [err, debugInfo] = msg.parseError();
console.error(
`Error received from element ${msg.src.name}: ${err.message}`,
);
console.error(`Debugging information: ${debugInfo || 'none'}`);
err.free();
terminate = true;
break;
case Gst.MessageType.EOS:
console.log('End-Of-Stream reached.');
terminate = true;
break;
case Gst.MessageType.STATE_CHANGED:
/* We are only interested in state-changed messages from the pipeline */
if (msg.src === data.pipeline) {
const [oldState, newState, pendingState] = msg.parseStateChanged();
const oldStateName = Gst.Element.stateGetName(oldState);
const newStateName = Gst.Element.stateGetName(newState);
console.log(
`Pipeline state changed from ${oldStateName} to ${newStateName}`,
);
}
break;
default:
/* We should not reach here */
console.error('Unexpected message received.');
break;
}
}
} while (!terminate);
/* Free resources */
bus.unref();
data.pipeline.setState(Gst.State.NULL);
data.pipeline.unref();
})();
function padAddedHandler(src: Gst.Element, newPad: Gst.Pad, data: CustomData) {
const sinkPad = data.convert.getStaticPad('sink');
do {
console.log(`Received new pad '${src.name}' from '${data.source.name}':`);
/* If our converter is already linked, we have nothing to do here */
if (sinkPad.isLinked()) {
console.log('We are already linked. Ignoring.');
break;
}
/* Check the new pad's type */
const newPadCaps = newPad.getCurrentCaps();
const newPadStruct = newPadCaps.getStructure(0);
const newPadType = newPadStruct.getName();
if (!newPadType.startsWith('audio/x-raw')) {
console.log(
`It has type '${newPadType}' which is not raw audio. Ignoring.`,
);
break;
}
/* Attempt the link */
const ret = newPad.link(sinkPad);
if (ret !== Gst.PadLinkReturn.OK) {
console.error(`Type is '${newPadType}' but link failed.`);
} else {
console.log(`Link succeeded (type '${newPadType}').`);
}
} while (false);
/* Unreference the sink pad */
sinkPad.unref();
}
Execution results:
Pipeline state changed from NULL to READY:
Excepted results:
Pipeline state changed from NULL to READY:
Received new pad 'src_0' from 'source':
It has type 'video/x-raw' which is not raw audio. Ignoring.
Received new pad 'src_1' from 'source':
Link succeeded (type 'audio/x-raw').
Pipeline state changed from READY to PAUSED:
Pipeline state changed from PAUSED to PLAYING:
I noticed that the code data.pipeline.setState(Gst.State.PLAYING) does more things than gst_element_set_state(data.pipeline, GST_STATE_PLAYING)
souphttpsrc gstsouphttpsrc.c:1421:gst_soup_http_src_got_headers:<source>
GST_EVENT gstevent.c:998:gst_event_new_segment: creating segment event
basesrc gstbasesrc.c:3068:gst_base_src_loop:<source> marking pending
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_TYPEFIND gsttypefind.c:72:gst_type_find_register: registering typefind
GST_PLUGIN_LOADING gstplugin.c:995:_priv_gst_plugin_load_file_for_registry: plug
typefindfunctions gsttypefindfunctions.c:4726:matroska_type_find: === top-level
typefindfunctions gsttypefindfunctions.c:4732:matroska_type_find: === done with
typefindfunctions gsttypefindfunctions.c:4726:matroska_type_find: === top-level
typefindfunctions gsttypefindfunctions.c:4737:matroska_type_find: audio=1 video
GST_EVENT gstevent.c:918:gst_event_new_caps: creating caps event video/
GST_ELEMENT_FACTORY gstelementfactory.c:489:gst_element_factory_create_with_prope
GST_ELEMENT_FACTORY gstelementfactory.c:489:gst_element_factory_create_with_prope
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstTypeFindElement@0x7b
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstTypeFindElement@0x7b
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad typef
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link sink:proxy
GST_PADS gstpad.c:2621:gst_pad_link_full: linked sink:proxypad1 and ty
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstDecodeBin@0x7beb7800
GST_ELEMENT_FACTORY gstelementfactory.c:489:gst_element_factory_create_with_prope
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstQueue2@0x7beb7803656
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstQueue2@0x7beb7803656
GST_ELEMENT_PADS gstutils.c:1818:gst_element_link_pads_full: trying to link el
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad typef
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad queue
GST_PADS gstutils.c:1634:prepare_link_maybe_ghosting: typefindelement0
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link typefindel
GST_PADS gstpad.c:4398:gst_pad_peer_query:<queue2-0:src> pad has no pe
GST_PADS gstpad.c:2621:gst_pad_link_full: linked typefindelement0:src
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstutils.c:1818:gst_element_link_pads_full: trying to link el
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad queue
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad decod
GST_PADS gstutils.c:1634:prepare_link_maybe_ghosting: queue2-0 and dec
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link queue2-0:s
GST_PADS gstpad.c:2621:gst_pad_link_full: linked queue2-0:src and deco
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_EVENT gstpad.c:6017:gst_pad_send_event_unchecked:<queue2-0:src> Rec
GST_STATES gstbin.c:2480:gst_bin_element_set_state:<typefind> current NU
GST_STATES gstelement.c:2824:gst_element_continue_state:<typefind> compl
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<typefind>
GST_STATES gstbin.c:2939:gst_bin_change_state_func:<decodebin0> child 't
GST_STATES gstelement.c:2796:gst_element_continue_state:<decodebin0> com
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<decodebin0
GST_STATES gstelement.c:2804:gst_element_continue_state:<decodebin0> con
GST_STATES gstbin.c:2480:gst_bin_element_set_state:<typefind> current RE
GST_STATES gstelement.c:2824:gst_element_continue_state:<typefind> compl
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<typefind>
GST_STATES gstbin.c:2939:gst_bin_change_state_func:<decodebin0> child 't
GST_STATES gstelement.c:2796:gst_element_continue_state:<queue2-0> commi
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<queue2-0>
GST_STATES gstelement.c:2804:gst_element_continue_state:<queue2-0> conti
task gsttask.c:531:gst_task_set_lock: setting stream lock 0x7beb78
GST_PADS gstpad.c:6363:gst_pad_start_task:<queue2-0:src> created task
GST_STATES gstelement.c:2824:gst_element_continue_state:<queue2-0> compl
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<queue2-0>
typefind gsttypefindelement.c:183:gst_type_find_element_have_type:<typ
queue2 gstqueue2.c:2400:gst_queue2_locked_enqueue: got caps: video/w
GST_PADS gstpad.c:4398:gst_pad_peer_query:<typefind:src> pad has no pe
GST_EVENT gstevent.c:918:gst_event_new_caps: creating caps event video/
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad typef
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad typef
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link typefind:s
GST_PADS gstpad.c:2621:gst_pad_link_full: linked typefind:src and deco
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking typefind:src(0x7beb78
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked typefind:src and decod
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link typefind:s
GST_PADS gstpad.c:2621:gst_pad_link_full: linked typefind:src and deco
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking typefind:src(0x7beb78
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked typefind:src and decod
GST_PLUGIN_LOADING gstplugin.c:995:_priv_gst_plugin_load_file_for_registry: plug
GST_ELEMENT_FACTORY gstelementfactory.c:489:gst_element_factory_create_with_prope
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstMatroskaDemux@0x7beb
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link typefind:s
GST_PADS gstpad.c:2621:gst_pad_link_full: linked typefind:src and matr
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_STATES gstelement.c:2824:gst_element_continue_state:<matroskademux0>
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<matroskade
GST_ELEMENT_PADS gstelement.c:1013:gst_element_get_static_pad: no such pad 'vi
GST_ELEMENT_PADS gstelement.c:1013:gst_element_get_static_pad: no such pad 'au
GST_ELEMENT_PADS gstelement.c:1013:gst_element_get_static_pad: no such pad 'su
GST_STATES gstelement.c:2824:gst_element_continue_state:<matroskademux0>
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<matroskade
typefind gsttypefindelement.c:183:gst_type_find_element_have_type:<typ
matroskareadcommon matroska-read-common.c:1601:gst_matroska_read_common_parse_he
matroskademux matroska-demux.c:5528:gst_matroska_demux_check_seekability:<m
matroskademux matroska-demux.c:1727:gst_matroska_demux_add_stream:<matroska
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad matro
GST_EVENT gstevent.c:918:gst_event_new_caps: creating caps event video/
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<matroskademux0> adding
GST_ELEMENT_FACTORY gstelementfactory.c:489:gst_element_factory_create_with_prope
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad matro
GST_STATES gstelement.c:2796:gst_element_continue_state:<multiqueue0> co
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<multiqueue
GST_STATES gstelement.c:2804:gst_element_continue_state:<multiqueue0> co
GST_STATES gstelement.c:2824:gst_element_continue_state:<multiqueue0> co
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<multiqueue
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link matroskade
GST_PADS gstpad.c:2621:gst_pad_link_full: linked matroskademux0:video_
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking matroskademux0:video_
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked matroskademux0:video_0
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<multiqueue0> adding pad
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<multiqueue0> adding pad
task gsttask.c:531:gst_task_set_lock: setting stream lock 0x7beb60
GST_PADS gstpad.c:6363:gst_pad_start_task:<multiqueue0:src_0> created
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link matroskade
GST_PADS gstpad.c:2621:gst_pad_link_full: linked matroskademux0:video_
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link multiqueue
GST_PADS gstpad.c:2621:gst_pad_link_full: linked multiqueue0:src_0 and
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking multiqueue0:src_0(0x7
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked multiqueue0:src_0 and
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link multiqueue
GST_PADS gstpad.c:2621:gst_pad_link_full: linked multiqueue0:src_0 and
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking multiqueue0:src_0(0x7
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked multiqueue0:src_0 and
vadisplay gstvadisplay_drm.c:155:gst_va_display_drm_create_va_display:<
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm0> VA info: VA-API v
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm0> VA info: Trying t
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm0> VA info: Found in
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm0> VA info: va_openD
vadisplay gstvadisplay.c:405:gst_va_display_initialize:<vadisplaydrm0>
vadisplay gstvadisplay.c:176:_gst_va_display_filter_driver: VA-API driv
va gstvadevice_linux.c:104:gst_va_device_find_devices: Found VA-
vadisplay gstvadisplay_drm.c:155:gst_va_display_drm_create_va_display:<
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm1> VA info: VA-API v
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm1> VA info: Trying t
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm1> VA info: va_openD
vadisplay gstvadisplay.c:401:gst_va_display_initialize:<vadisplaydrm1>
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_ARGB => { fo
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_BGRA => { fo
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_ABGR => { fo
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_RGBA => { fo
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_xRGB => { fo
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_BGRx => { fo
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_xBGR => { fo
vadisplay gstvavideoformat.c:458:fix_map: GST_VIDEO_FORMAT_RGBx => { fo
GST_PLUGIN_LOADING gstplugin.c:995:_priv_gst_plugin_load_file_for_registry: plug
GST_ELEMENT_FACTORY gstelementfactory.c:489:gst_element_factory_create_with_prope
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstVideoDecoder@0x7beb6
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstVideoDecoder@0x7beb6
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link multiqueue
GST_PADS gstpad.c:2621:gst_pad_link_full: linked multiqueue0:src_0 and
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_PADS gstpad.c:4398:gst_pad_peer_query:<vavp8dec0:src> pad has no p
GST_CONTEXT gstvautils.c:83:pad_query:<vavp8dec0:src> pad peer query fail
GST_CONTEXT gstvautils.c:83:pad_query:<vavp8dec0:sink> pad peer query fai
GST_CONTEXT gstvautils.c:152:gst_va_context_query:<vavp8dec0> posting nee
vadisplay gstvadisplay_drm.c:155:gst_va_display_drm_create_va_display:<
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm2> VA info: VA-API v
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm2> VA info: Trying t
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm2> VA info: Found in
vadisplay gstvadisplay.c:353:_va_info:<vadisplaydrm2> VA info: va_openD
vadisplay gstvadisplay.c:405:gst_va_display_initialize:<vadisplaydrm2>
vadisplay gstvadisplay.c:176:_gst_va_display_filter_driver: VA-API driv
GST_CONTEXT gstvautils.c:197:gst_va_element_propagate_display_context:<va
GST_STATES gstelement.c:2824:gst_element_continue_state:<vavp8dec0> comp
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<vavp8dec0>
GST_PADS gstpad.c:4398:gst_pad_peer_query:<vavp8dec0:src> pad has no p
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad vavp8
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link vavp8dec0:
GST_PADS gstpad.c:2621:gst_pad_link_full: linked vavp8dec0:src and dec
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_EVENT gstpad.c:6017:gst_pad_send_event_unchecked:<vavp8dec0:src> Re
GST_STATES gstelement.c:2824:gst_element_continue_state:<vavp8dec0> comp
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<vavp8dec0>
GST_PADS gstpad.c:4398:gst_pad_peer_query:<'':decodepad1> pad has no p
videodecoder gstvideodecoder.c:1631:gst_video_decoder_sink_event_default:<
matroskademux matroska-demux.c:1727:gst_matroska_demux_add_stream:<matroska
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad matro
GST_EVENT gstevent.c:918:gst_event_new_caps: creating caps event audio/
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<matroskademux0> adding
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link matroskade
GST_PADS gstpad.c:2621:gst_pad_link_full: linked matroskademux0:audio_
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking matroskademux0:audio_
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked matroskademux0:audio_0
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<multiqueue0> adding pad
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<multiqueue0> adding pad
task gsttask.c:531:gst_task_set_lock: setting stream lock 0x7beb60
GST_PADS gstpad.c:6363:gst_pad_start_task:<multiqueue0:src_1> created
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link matroskade
GST_PADS gstpad.c:2621:gst_pad_link_full: linked matroskademux0:audio_
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link multiqueue
GST_PADS gstpad.c:2621:gst_pad_link_full: linked multiqueue0:src_1 and
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking multiqueue0:src_1(0x7
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked multiqueue0:src_1 and
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link multiqueue
GST_PADS gstpad.c:2621:gst_pad_link_full: linked multiqueue0:src_1 and
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstpad.c:2145:gst_pad_unlink: unlinking multiqueue0:src_1(0x7
GST_ELEMENT_PADS gstpad.c:2200:gst_pad_unlink: unlinked multiqueue0:src_1 and
GST_PLUGIN_LOADING gstplugin.c:995:_priv_gst_plugin_load_file_for_registry: plug
GST_ELEMENT_FACTORY gstelementfactory.c:489:gst_element_factory_create_with_prope
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstAudioDecoder@0x7beb6
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<GstAudioDecoder@0x7beb6
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link multiqueue
GST_PADS gstpad.c:2621:gst_pad_link_full: linked multiqueue0:src_1 and
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_STATES gstelement.c:2824:gst_element_continue_state:<vorbisdec0> com
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<vorbisdec0
GST_ELEMENT_PADS gstelement.c:1016:gst_element_get_static_pad: found pad vorbi
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link vorbisdec0
GST_PADS gstpad.c:2621:gst_pad_link_full: linked vorbisdec0:src and de
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_EVENT gstpad.c:6017:gst_pad_send_event_unchecked:<vorbisdec0:src> R
GST_STATES gstelement.c:2824:gst_element_continue_state:<vorbisdec0> com
GST_STATES gstelement.c:2724:_priv_gst_element_state_changed:<vorbisdec0
audiodecoder gstaudiodecoder.c:2539:gst_audio_decoder_sink_eventfunc:<vorb
GST_EVENT gstevent.c:998:gst_event_new_segment: creating segment event
GST_PADS gstpad.c:4398:gst_pad_peer_query:<'':decodepad1> pad has no p
GST_PADS gstpad.c:4398:gst_pad_peer_query:<'':decodepad1> pad has no p
audiodecoder gstaudiodecoder.c:2539:gst_audio_decoder_sink_eventfunc:<vorb
videodecoder gstvideodecoder.c:1631:gst_video_decoder_sink_event_default:<
GST_EVENT gstevent.c:918:gst_event_new_caps: creating caps event audio/
GST_PADS gstpad.c:4398:gst_pad_peer_query:<'':decodepad2> pad has no p
GST_PADS gstpad.c:4398:gst_pad_peer_query:<'':decodepad1> pad has no p
GST_PADS gstpad.c:4398:gst_pad_peer_query:<'':decodepad1> pad has no p
vavp8dec gstvabasedec.c:1163:gst_va_base_dec_set_output_state:<vavp8de
GST_EVENT gstevent.c:918:gst_event_new_caps: creating caps event video/
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<decodebin0> adding pad
GST_PADS gstpad.c:2440:gst_pad_link_prepare: trying to link decodebin0
GST_PADS gstpad.c:2621:gst_pad_link_full: linked decodebin0:src_0 and
GST_EVENT gstevent.c:1687:gst_event_new_reconfigure: creating reconfigu
GST_ELEMENT_PADS gstelement.c:758:gst_element_add_pad:<source> adding pad 'src
These logs are executed in C between gst_element_set_state(data.pipeline, GST_STATE_PLAYING) and when ‘pad-added’ is triggered.
Is this bug caused by the single thread of nodejs?
But I understand that these operations should be run under C
I used a dirty trick to make the code to work:
/* Start playing */
data.pipeline.setState(Gst.State.PAUSED); // Add the line
await new Promise((resolve) => setTimeout(resolve, 1000)); // Add the line
const ret = data.pipeline.setState(Gst.State.PLAYING);
if (ret === Gst.StateChangeReturn.FAILURE) {
console.error('Unable to set the pipeline to the playing state.');
data.pipeline.unref();
throw new Error();
}
Start the pipeline in PAUSED state and wait one second before playing.
Execution results:
Received new pad 'src_0' from 'source':
It has type 'video/x-raw' which is not raw audio. Ignoring.
Received new pad 'src_1' from 'source':
Link succeeded (type 'audio/x-raw').
Pipeline state changed from NULL to READY:
Pipeline state changed from READY to PAUSED:
Pipeline state changed from PAUSED to PLAYING:
You can notice that the result of the execution is still different with C
In C, the ‘pad-added’ is triggered after Pipeline state changed from NULL to READY
But I still want to know the root cause. Does anyone have an idea about this?
I tried another way to make it works
Avoids magic number 1000
/* Start playing */
let ret = data.pipeline.setState(Gst.State.PLAYING);
while (ret === Gst.StateChangeReturn.ASYNC) {
await new Promise((resolve) => setTimeout(resolve, 100));
const [returnType, state, pending] = data.pipeline.getState(
100 * Gst.MSECOND,
);
ret = returnType;
}
if (ret === Gst.StateChangeReturn.FAILURE) {
console.error('Unable to set the pipeline to the playing state.');
data.pipeline.unref();
throw new Error();
}
Although I still don’t understand what happen