According to the gstreamer docs [1], the GstMessage pointer returned by
gst_bus_pop() is nullable, meaning NULL is a valid return value.
Previously, gst_is_missing_plugin_message would throw an assert when its
message object parameter would fail the GST_IS_MESSAGE macro check,
crashing the entire process (unless running in a try-catch block of course).
Instead of relying on valid messages, check if the message object itself is
valid before passing it to other gstreamer functions.
[1] https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstBus.html#gst-bus-pop
Signed-off-by: Christopher N. Hesse <raymanfx@gmail.com>
* Fix CV_Asserts with negation of strings
{!"string"} causes some compilers to throw a warning.
The value of the string is not that important -- it's only for printing
the assertion message.
Replace these calls with:
CV_Error(Error::StsError, "string")
to suppress the warning.
* remove unnecessary 'break' after CV_Error()
Add gstreamer capture capability for some YUV formats (#8914)
* Add gstreamer capture capability for some YUV formats.(only for gstreamer-1.0)
* avoid cross initialization error
* add checking if pipeline is manualpipeline, for compatibility.
modules/videoio/src/cap_gstreamer.cpp:577:31: error: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wreserved-user-defined-literal]
filename = "v4lsrc ! "COLOR_ELEM" ! appsink";
^
modules/videoio/src/cap_gstreamer.cpp:585:32: error: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wreserved-user-defined-literal]
filename = "v4l2src ! "COLOR_ELEM" ! appsink";
- Accurate ASYC task handling for both GStreamer generations.
- Correct video duration request for videos.
- More accurate pipeline destruction.
- Correct color space conversion plugin for GStreamer 1.0.
CvCapture_GStreamer::retrieveFrame assumes that RGB videos are 24BPP.
This is not necesarily the case, unless we explicitly tell GStreamer
that we want 24BPP RGB streams.
Adding bpp=(int)24 to the appsink caps.
Christopher N. Hesse
Alexander Alekhin
zarelaky
Maksim Shabunin
Alexander Alekhin
Simon Que
luz.paz
Emanuele Ruffaldi
Satoshi Tanaka
StevenPuttemans
Andreas Franek
Pavel Rojtberg
Dan
Péter Trombitás
Dan
Alexander Stohr
Dikay900
Nils Plath
Artur Wieczorek
Alexander Smorkalov
Sander Mathijs van Veen
vbystricky
Luis Zarrabeitia
Roman Donchenko
Dirk Van Haerenborgh
Andrey Kamaev
Dirk Van Haerenborgh
Éric Piel
Ilya Lavrenov