c - 如何在 gstreamer 中为 udpsrc 元素创建上限？

Question

我想使用 udpsrc 元素运行音频管道。我要设置 udpsrc 的上限(能力)例如 gst-launch-0.10 -vvv udpsrc multicast-iface=eth0 uri=udp://239.255.255.6:25012 caps="application/x-rtp, media=(string)audio, payload=(int) 96，时钟速率=(int)16000，编码名称=(字符串)MPEG4-GENERIC，streamtype=(字符串)5，profile-level-id=(字符串)15，模式=(字符串)AAC-hbr，配置=(string)1408,sizelength=(string)13, indexlength=(string)3,indexdeltalength=(string)3" 在我使用的程序中设置这个上限

g_object_set(G_OBJECT(Source),"caps",gst_caps_new_simple ("application/x-rtp",
                    "media", G_TYPE_STRING, "audio",
                    "payload",G_TYPE_INT,96,
                    "clock-rate", G_TYPE_INT, 16000,
                    "encoding-name", G_TYPE_STRING,"MPEG4-GENERIC",
                    "streamtype",G_TYPE_STRING,"5",
                    "profile-level-id", G_TYPE_STRING,"15",
                    "mode",G_TYPE_STRING,"AAC-hbr",
                    "config",G_TYPE_STRING,"1408",
                    "sizelength",G_TYPE_STRING,"13",
                    "indexlength",G_TYPE_STRING,"3"
                    "indexdeltalength",G_TYPE_STRING,"3",
                    NULL),NULL);

但是它显示了段错误所以请尽快告诉我该怎么做？......

Answer 1

代码看起来没问题(尽管你泄露了大写字母)。要修复泄漏，请执行以下操作:

GstCaps *caps = gst_caps_new_simple( ....);
g_object_set(source, "caps", caps, NULL);
gst_caps_unref(caps);

要弄清楚为什么会出现段错误，请在 gdb 下运行应用程序:

G_DEBUG="fatal_warnings" gdb --args ./my-app <args>

在 gdb 中“运行”并在它崩溃时键入“bt”以显示回溯。