如何在gstreamer中设置元素的水槽垫的属性? [英] How to set the property of sink pad of element in gstreamer?

问题描述

如何在程序中设置水槽垫的属性 例如:

How to set the property of sink pad in program for example:

sin_00::outWidth=1280 sin_00::outHeight=720 in this way pipeline was run using gst-launch-0.10 .....

并设置此属性，我已经使用了gst_pad_set_property() API，但它不起作用 它显示以下错误:

And to set this property Ive used gst_pad_set_property() API but its not working it shows following error :

3_video_temp.c: In function 'main':
3_video_temp.c:551: warning: implicit declaration of function 'gst_pad_set_property'
/tmp/cc2zDbzt.o: In function `main':
/home/project/compWorkspace/Edubeam/3_video_temp.c:551: undefined reference to `gst_pad_set_property'
collect2: ld returned 1 exit status
make: *** [all] Error 1

请告知如何尽快设置该值.

Please tell how to set that value as soon as possible.

推荐答案

如果打击垫具有​​属性(如videomixer中的打击垫具有​​)，则只需像使用任何属性一样使用g_object_set，就像这样:

If the pads have properties (like the pads in videomixer has), you just use g_object_set like you would with any property, so something like:

g_object_set (pad, "width", 1280, NULL);

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