[英]Gstreamer: How to link a request pad (sink) and static pad (source)
Trying to do the linking for tee to a queue.尝试将 tee 链接到队列。 Here is what i do in the program codes
这是我在程序代码中所做的
Program snippets /// create the tee pad template tee_src_pad_template = gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (tee), "src_%u");程序片段 /// 创建 tee pad 模板 tee_src_pad_template = gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (tee), "src_%u");
if(!tee_src_pad_template)
g_print("thread Live: no tee_src_pad_template \n");
/// request the 2 pad
tee_pad = gst_element_request_pad (tee,
tee_src_pad_template,
NULL,
NULL);
queue_pad = gst_element_get_static_pad (queue, "sink");
/// verify the object is created
if(!tee_pad)
g_print(" no tee_pad \n");
if(!queue_pad)
g_print("no queue_pad \n");
/// link the pads together
GstPadLinkReturn ret = gst_pad_link (tee_stream_pad, queue_stream_pad);
g_print(" Link return %d \n", ret);
The program compiles but there is error at the link pad stage, the value returned is -4程序编译但在连接板阶段有错误,返回值为-4
Link return -4
Check out on the meaning of GstPadLinkReturn value.查看 GstPadLinkReturn 值的含义。 Just wonder what causes the following
只是想知道是什么原因导致以下
GST_PAD_LINK_NOFORMAT (-4) – pads do not have common format
And what does it mean they do not have common format?这意味着它们没有通用格式是什么意思? Aren't they neutral linkers?
它们不是中性链接器吗?
Regards问候
Manage to figure out the common problem as I linked the wrong element type当我链接错误的元素类型时,设法找出常见问题
GST_PAD_LINK_NOFORMAT (-4) – pads do not have common format
means exactly what it is, that the pads type is compatible意味着它是什么,垫类型是兼容的
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.