GStreamer on Qt for iOS

[Matthew Waters]

Also, you may be missing some core frameworks, like Foundation or 
CoreGraphics, or UIKit.  See 
https://gitlab.freedesktop.org/gstreamer/gst-examples/-/blob/master/playback/player/ios/GstPlay.xcodeproj/project.pbxproj#L9 
<https://gitlab.freedesktop.org/gstreamer/gst-examples/-/blob/master/playback/player/ios/GstPlay.xcodeproj/project.pbxproj#L9> 
for a tentative list.

Cheers
-Matt

On 21/5/21 11:22 am, Matthew Waters wrote:
> If you google any of those functions, you'll find that _res_9_* is in 
> libresolve.dylib.  Add that to your build definitions.
>
> find, nm and grep are your friends here.
>
> Cheers
> -Matt
>
> On 20/5/21 10:11 pm, Luis via gstreamer-devel wrote:
>> Yes, I did that, but there were several errors, so I tryed to manually
>> declare and register the plugins.
>>
>> This works fine:
>>
>> // Declar plugins
>> G_BEGIN_DECLS
>> GST_PLUGIN_STATIC_DECLARE(coreelements);
>> GST_PLUGIN_STATIC_DECLARE(videotestsrc);
>> GST_PLUGIN_STATIC_DECLARE(videoconvert);
>> GST_PLUGIN_STATIC_DECLARE(playback);
>> GST_PLUGIN_STATIC_DECLARE(x264);
>> GST_PLUGIN_STATIC_DECLARE(libav);
>> GST_PLUGIN_STATIC_DECLARE(encoding);
>> //...
>> G_END_DECLS
>>
>> int main(int argc, char *argv[]) {
>>
>>      // Initialize the GStreamer library
>>      if (gst_init_check(&argc, &argv, NULL)) {
>>          qDebug() << "This program is linked against" <<
>> gst_version_string();
>>      }
>>
>>      // Register plugins
>>      GST_PLUGIN_STATIC_REGISTER(coreelements);
>>      GST_PLUGIN_STATIC_REGISTER(videotestsrc);
>>      GST_PLUGIN_STATIC_REGISTER(videoconvert);
>>      GST_PLUGIN_STATIC_REGISTER(playback);
>>      GST_PLUGIN_STATIC_REGISTER(x264);
>>      GST_PLUGIN_STATIC_REGISTER(libav);
>>      GST_PLUGIN_STATIC_REGISTER(encoding);
>>      //...
>> }
>>
>> But if I try to register the others plugins, for example by adding
>>
>> GST_PLUGIN_STATIC_DECLARE(udp);
>>
>> and
>>
>> GST_PLUGIN_STATIC_REGISTER(udp);
>>
>> it gives me this error:
>>
>> GStreamer(libgio-2_0_a-gresolver.c.o):-1: error: Undefined symbols for
>> architecture x86_64:
>>    "_res_9_dn_expand", referenced from:
>>        _do_lookup_records in 
>> GStreamer(libgio-2_0_a-gthreadedresolver.c.o)
>>    "_res_9_ninit", referenced from:
>>        _do_lookup_records in 
>> GStreamer(libgio-2_0_a-gthreadedresolver.c.o)
>>    "_res_9_nquery", referenced from:
>>        _do_lookup_records in 
>> GStreamer(libgio-2_0_a-gthreadedresolver.c.o)
>>    "_res_9_ndestroy", referenced from:
>>        _do_lookup_records in 
>> GStreamer(libgio-2_0_a-gthreadedresolver.c.o)
>>    "_res_9_init", referenced from:
>>        _g_resolver_maybe_reload in GStreamer(libgio-2_0_a-gresolver.c.o)
>>
>> I tried to use directly gst_ios_init.m and gst_ios_init.h, but it seems
>> missing some pieces. I needed to add
>>
>> #include <UIKit/UIKit.h>
>> #include <Foundation/Foundation.h>
>>
>> so I suspect that some include/import is missing somewhere
>>
>> Specifically it seems missing the lgio-2.0 library.
>>
>> Same thread in the Qt Forum:
>> https://forum.qt.io/topic/126746/gstreamer-on-ios/5
>>
>>
>>
>> Any hint?
>>
>> Thanks Matt
>>
>>
>>
>>
>>
>>
>> -- 
>> Sent from: http://gstreamer-devel.966125.n4.nabble.com/
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>


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