Hi,
I tried both with -e and without -e, the error I got was this:
[gstreamer] initialized gstreamer, version 1.8.3.0
[gstreamer] gstreamer decoder failed to create pipeline
[gstreamer] (syntax error)
[gstreamer] failed to init gstCamera
gst-camera: failed to initialize video device
Which is from parser, and here is my source code:
bool gstCamera::buildLaunchStr()
{
std::ostringstream ss;
//open ip camera
ss << " udpsrc port=15004 !";
ss << " application/x-rtp,encoding-name=H264,payload=96 ! rtph264depay !
h264parse !";
ss << " queue ! avdec_h264 ! xvimagesink sync=false async=false -e";
mLaunchStr = ss.str();
printf(LOG_GSTREAMER "gstreamer decoder pipeline string:\n");
printf("%s\n", mLaunchStr.c_str());
return true;
}
bool gstCamera::init()
{
GError* err = NULL;
// build pipeline string
if( !buildLaunchStr() )
{
printf(LOG_GSTREAMER "gstreamer decoder failed to build pipeline
string\n");
return false;
}
// launch pipeline
mPipeline = gst_parse_launch(mLaunchStr.c_str(), &err);
if( err != NULL )
{
printf(LOG_GSTREAMER "gstreamer decoder failed to create pipeline\n");
printf(LOG_GSTREAMER " (%s)\n", err->message);
g_error_free(err);
return false;
}
// get the appsrc
GstElement* appsinkElement = gst_bin_get_by_name(GST_BIN(pipeline),
"mysink");
GstAppSink* appsink = GST_APP_SINK(appsinkElement);
if( !appsinkElement || !appsink)
{
printf(LOG_GSTREAMER "gstreamer failed to retrieve AppSink element from
pipeline\n");
return false;
}
mAppSink = appsink;
// setup callbacks
GstAppSinkCallbacks cb;
memset(&cb, 0, sizeof(GstAppSinkCallbacks));
cb.eos = onEOS;
cb.new_preroll = onPreroll;
cb.new_sample = onBuffer;
gst_app_sink_set_callbacks(mAppSink, &cb, (void*)this, NULL);
return true;
Locked
