Question

我在第二个帖子中链接元素时遇到问题。我在每个I创建管道中创建两个线程来存储IP摄像机流到文件。当第二个线程尝试链接流元素（h264parse - ＆gt; matroskamux）时，我收到了分段故障信号。

Gstreamer打印出一些错误：

(Cam_recorder:5529): GLib-GObject-WARNING **: cannot register existing type 'GstMatroskamuxPad'

(Cam_recorder:5529): GLib-GObject-CRITICAL **: g_object_new: assertion 'G_TYPE_IS_OBJECT (object_type)' failed

当我运行相同的代码并在执行线程之间添加了一些延迟（500ms）时，两个线程都正确地创建了管道并且程序工作。

任何人都可以帮助我吗？

编辑：我的代码：

void Camera::Thread_function(){
    GstElement *pipeline=NULL;
    GstElement * temp_ele;
    GstBus *bus=NULL;
    GstMessage *msg=NULL;
    GError *error = NULL;
    STRING text;
    DEBUG<<"Starting camera:"<<name<<END;
    text=stream_uri;
    DEBUG<< text <<END;
    pipeline=gst_parse_launch(text.c_str(),&error);
    if (error != NULL){
        CRITICAL<<"Parse error: "<< error->message<<END;
        g_error_free (error);
        error=NULL;
        goto STOP;
    }

    if(pipeline==NULL){
        CRITICAL<<"Pipeline is NULL"<<END;
        goto STOP;
    }

     gst_element_set_state (pipeline, GST_STATE_PLAYING);

     loop = g_main_loop_new (NULL, FALSE);
     gst_bus_add_watch (GST_ELEMENT_BUS (pipeline), bus_cb, loop);
     g_timeout_add_seconds (1, CAM_REC::timeout_cb, this);
     g_main_loop_run (loop);
     g_main_loop_unref (loop);
STOP:

    if (msg != NULL){
      gst_message_unref (msg);
      msg=NULL;
    }
    if(bus!=NULL){
        gst_object_unref (bus);
        bus=NULL;
    }

    if(pipeline){
        gst_element_set_state (pipeline, GST_STATE_NULL);
        gst_object_unref (pipeline);
        pipeline=NULL;
    }
    //*/
    INFO<<"Cam "<<name<<" end"<<END;
}

管道：

rtspsrc name=kam3_stream  location=\"rtsp://192.168.0.107/stream1\" ! rtph264depay name=kam3_deplay ! h264parse name=kam3_parse ! matroskamux name=kam3_mux ! filesink location=x.mkv name=kamera3_file_sink

rtspsrc name=kam4_stream  location=\"rtsp://admin:admin@192.168.0.108/\" ! rtph264depay name=kam4_deplay ! h264parse name=kam4_parse ! matroskamux name=kam4_mux ! filesink location=x2.mkv name=kamera4_file_sink

程序在函数gst_parse_launch（）

中崩溃

罐

第二个线程中的gst_element_link faild

0 个答案: