gstreamer示例文档代码未运行 [英] gstreamer sample documentation code not running
问题描述
在成功执行了多个教程之后,尝试编译并运行示例appsrc代码.这是一个文档代码,应该可以运行,但是...
Trying to compile and run a sample appsrc code after having successfully executed several tutorials. This is a documentation code, supposed it to run but ...
用于编译的命令
gcc appGuideAppSrc.c -o appGuide `pkg-config --cflags --libs gstreamer-0.10 gstreamer-app-0.10`
在
appGuideAppSrc.c: In function ‘cb_need_data’:
appGuideAppSrc.c:14:8: warning: assignment makes pointer from integer without a cast [enabled by default]
appGuideAppSrc.c:18:25: error: lvalue required as left operand of assignment
好的,警告很好,但是引发错误的行似乎还可以
Ok, the warning is fine but the line where it throws error is which seems to be ok
GST_BUFFER_PTS (buffer) = timestamp;
根据下面来自@Michal的回答,将其更改为TIMESTAMP并出现以下错误
Based on answer below from @Michal, changed it to TIMESTAMP and got the following error
(appGuide:11043): GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT (object)' failed
(appGuide:11043): GStreamer-CRITICAL **: gst_bin_add_many: assertion `GST_IS_ELEMENT (element_1)' failed
(appGuide:11043): GStreamer-CRITICAL **: gst_element_link_many: assertion `GST_IS_ELEMENT (element_1)' failed
(appGuide:11043): GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT (object)' failed
(appGuide:11043): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(appGuide:11043): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
是否有输入?
参考文献:
整个appsrc示例代码
References:
The whole appsrc sample code
推荐答案
您似乎正在尝试使用较旧的gstreamer版本:0.10来编译gstreamer-1.0示例.
It appears that you're trying to compile a gstreamer-1.0 example with an older version of gstreamer: 0.10.
GST_BUFFER_PTS
和GST_BUFFER_DTS
,并替换了gstreamer-0.10之前可用的GST_BUFFER_TIMESTAMP
.
GST_BUFFER_PTS
and GST_BUFFER_DTS
were introduced in gstreamer-0.11 and replaced GST_BUFFER_TIMESTAMP
available up to gstreamer-0.10.
使用更新的gstreamer版本或将GST_BUFFER_PTS
更改为GST_BUFFER_TIMESTAMP
.
Either use a newer gstreamer version or change GST_BUFFER_PTS
to GST_BUFFER_TIMESTAMP
.
这篇关于gstreamer示例文档代码未运行的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!