[英]Gstreamer: why can't I send data over UDP on localhost?
我正在尝试在localhost上测试udp流,但未显示任何内容:
videotestsrc(或audiotestsrc)-> udpsink(端口:5078,主机:127.0.0.1)
这是代码:
console_out_inf("TESTING", "Starting work with test elements");
gint port = 5078;
// TEST PIPELINE OUT
gst_bin_add_many(GST_BIN(GSD->pipetest_out), GSD->testsrc, GSD->udpsink, NULL);
gchar* host = "127.0.0.1";
g_object_set(GSD->udpsink, "port", port, NULL);
g_object_set(GSD->udpsink, "host", host, NULL);
if (!gst_element_link(GSD->testsrc, GSD->udpsink))
console_out_bad("STREAMING", "Error linking test udp elements -- SEND");
else
console_out_yes("STREAMING", "Correctly linked test udp elements -- SEND");
// TEST PIPELINE IN
gst_bin_add_many(GST_BIN(GSD->pipetest_in), GSD->udpsrc, GSD->autovideosink, NULL);
gst_element_set_state(GSD->udpsrc, GST_STATE_NULL);
g_object_set(GSD->udpsrc, "port", port, NULL);
if (!gst_element_link(GSD->udpsrc, GSD->autovideosink))
console_out_bad("STREAMING", "Error linking test udp elements -- RECEIVE");
else
console_out_yes("STREAMING", "Correctly linked test udp elements -- RECEIVE");
// PLAY TEST PIPELINE OUT
GstStateChangeReturn ret1;
ret1 = gst_element_set_state(GSD->pipetest_out, GST_STATE_PLAYING);
if (ret1 == GST_STATE_CHANGE_FAILURE)
console_out_bad("TESTING", "Failed playing pipetest out");
else
console_out_yes("TESTING", "Correctly played pipetest out");
// PLAY TEST PIPELINE IN
GstStateChangeReturn ret2;
ret2 = gst_element_set_state(GSD->pipetest_in, GST_STATE_PLAYING);
if (ret2 == GST_STATE_CHANGE_FAILURE)
console_out_bad("TESTING", "Failed playing pipetest in");
else
console_out_yes("TESTING", "Correctly played pipetest in");
// PRINT PIPELINES
GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(GSD->pipetest_out), GST_DEBUG_GRAPH_SHOW_ALL, "pipetest_out");
GST_DEBUG_BIN_TO_DOT_FILE(GST_BIN(GSD->pipetest_in), GST_DEBUG_GRAPH_SHOW_ALL, "pipetest_in");
这是“我自己的控制台输出”:
编辑 :不再相关! 一切都很好,管道建立正确,但是
PIPELINE OUT :videotestsrc-> udpsink(主机:127.0.0.1,端口:5078)
管道输入 :udpsrc(端口:5078)-> autovideosink
autovideosink不显示任何内容! 通过检查netstat -a,不会显示该端口上的连接。
附加信息:
有人知道我在做什么错吗?
这段代码看起来不错,但与您发布的控制台输出无关。
尝试使用命令行gst-launch逐段测试管道:
gst-launch-1.0 -e -v videotestsrc ! udpsink host="127.0.01"
一旦您在命令行中工作了该镜像,便会先连接到一个假接收器,然后在udp接收器中进行交换。
用host =“ localhost”或host =“ 192.168.0.1”尝试一下,我不记得了,但是我认为udpsink可能无法发送到回送
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