v4l2src: CAPS not being updated
Our camera doesn't support odd frame width or height. Our driver auto adjusts to the nearest option: fx height=1079->1080.
However gstreamer doesn't seem to be notified of this change, so it still reports the CAPS with the original width or height.
root@qt5122:~# GST_DEBUG="*:3" gst-launch-1.0 v4l2src io-mode=2 hw-center-crop=true device=/dev/qt5023_video0 num-buffers=30 ! "video/x-raw,width=1920,height=1079,format=NV12,framerate=30/1" ! fakesink -v
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw, width=(int)1920, height=(int)1079, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw, width=(int)1920, height=(int)1079, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps = video/x-raw, width=(int)1920, height=(int)1079, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-raw, width=(int)1920, height=(int)1079, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
Got EOS from element "pipeline0".
Execution ended after 0:00:01.058133202
Setting pipeline to NULL ...
Freeing pipeline ...It also seems to cause some allocation errors: fx when width=1921->1922, because it doesn't allocate enough memory.
root@qt5122:~# GST_DEBUG="*:3" gst-launch-1.0 v4l2src io-mode=2 hw-center-crop=true device=/dev/qt5023_video0 num-buffers=30 ! "video/x-raw,width=1921,height=1080,format=NV12,framerate=30/1" ! fakesink -v
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw, width=(int)1921, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw, width=(int)1921, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstFakeSink:fakesink0.GstPad:sink: caps = video/x-raw, width=(int)1921, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-raw, width=(int)1921, height=(int)1080, format=(string)NV12, framerate=(fraction)30/1, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709
0:00:00.150126298 807 0x559c1b410770 ERROR default video-frame.c:181:gst_video_frame_map_id: invalid buffer size 3113640 < 3116880
0:00:00.150228334 807 0x559c1b410770 ERROR v4l2bufferpool gstv4l2bufferpool.c:162:gst_v4l2_buffer_pool_copy_buffer:<v4l2src0:pool0:src> could not map buffer
0:00:00.150264239 807 0x559c1b410770 ERROR v4l2bufferpool gstv4l2bufferpool.c:2078:gst_v4l2_buffer_pool_process:<v4l2src0:pool0:src> failed to copy buffer
0:00:00.150324154 807 0x559c1b410770 WARN basesrc gstbasesrc.c:3127:gst_base_src_loop:<v4l2src0> error: Internal data stream error.
0:00:00.150344681 807 0x559c1b410770 WARN basesrc gstbasesrc.c:3127:gst_base_src_loop:<v4l2src0> error: streaming stopped, reason error (-5)
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.
Additional debug info:
../gstreamer-1.18.2/libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming stopped, reason error (-5)
Execution ended after 0:00:00.090777396
Setting pipeline to NULL ...
Freeing pipeline ...