gst_element_seek_simple (pipeline, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH , pos * GST_SECOND); } void PlayerWindow::onEos() { gst_element_set_state (pipeline, GST_STATE_NULL); } gboolean PlayerWindow::postGstMessage(GstBus * bus, GstMessage * message, gpointer user_data) { PlayerWindo...
+---GInitiallyUnowned+---GstObject+---GstElement+---GstBin+---GstPipeline+---GstCameraBin 以supportedFrameRates一个函数为例: QList< QPair<int,int> > CameraBinSession::supportedFrameRates(constQSize &frameSize,bool*continuous)const{ QList< QPair<int,int> > res; GstCaps *supportedCaps ...
GstQuery是一种机制,允许向元素或pad请求信息。在此示例中,我们询问管道 seek是否为允许(某些来源(如直播)不允许查找)。如果它允许,那么一旦影片播放了10 秒,我们使用Seek跳到其他位置。在前面的教程中,设置并运行管道后, 我们的main函数只是坐着等待通过 bus接收消息。这里,我们修改这个函数来周期性地唤醒并查询pi...
#include<QWidget>#include<gst/gst.h>classVideoWidget:publicQWidget{Q_OBJECTpublic:VideoWidget(QWidget*parent=nullptr);~VideoWidget();publicslots:voidplay();voidpause();voidstop();private:GstElement*pipeline;}; 实现视频小部件 在视频小部件的实现文件中,您需要初始化GStreamer并创建一个GStrea...
bin = gst_pipeline_new ("pipeline"); /* create a disk reader */ filesrc = gst_element_factory_make ("filesrc","disk_source"); g_assert (filesrc); g_object_set (G_OBJECT (filesrc),"location","PATH_TO_THE_EXECUTABLE",NULL); ...
Pipeline: gst-pipeline: imxcompositor_g2d name=comp \ sink_3::xpos=640 sink_3::ypos=360 sink_3::width=640 sink_3::height=360 \ sink_2::xpos=0 sink_2::ypos=360 sink_2::width=640 sink_2::height=360 \ sink_1::xpos=640 sink_1::ypos=0 sink_1::width=640 sink_1::heig...
在这个Pipeline中,qtiqmmfsrc是一个特定于Qualcomm的GStreamer element,用于从硬件摄像头设备中读取视频数据。camera=camera2参数指定要使用的摄像头设备为第二个可用的摄像头。 通过设置name=camsrc参数,我们给了此元素别名为“camsrc”,以便后续元素可以引用它。
which was本代码是使用GStreamer播放RTSP视频流,没有使用playbin,而是自己构建pipeline,经测试可以正常播...
// Initialize GStreamer QGst::init(&argc, &argv); // Create a GStreamer pipeline pipeline = new QGst::Pipeline(this); // Create a source element (camera) camera = QGst::ElementFactory::make("v4l2src", "camera"); // Create a video sink element videoSink = QGst::Element...
Pipeline is PREROLLING ... /GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0.GstPad:src: caps = video/x-raw, format=(string)BGRA, width=(int)320, height=(int)240, framerate=(fraction)30/1, multiview-mode=(string)mono, pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)...