使用qt的qcamera采集rk_hdmirx输入的视频流报错

drinker

通过hdmi输入接口的设备为/dev/video40,信息如下

1. root@rk3588:/# v4l2-ctl -d /dev/video40  -V -D
   
2. Driver Info:
   
3.         Driver name      : rk_hdmirx
   
4.         Card type        : rk_hdmirx
   
5.         Bus info         : fdee0000.hdmirx-controller
   
6.         Driver version   : 5.10.160
   
7.         Capabilities     : 0x84201000
   
8.                 Video Capture Multiplanar
   
9.                 Streaming
   
10.                 Extended Pix Format
    
11.                 Device Capabilities
    
12.         Device Caps      : 0x04201000
    
13.                 Video Capture Multiplanar
    
14.                 Streaming
    
15.                 Extended Pix Format
    
16. Format Video Capture Multiplanar:
    
17.         Width/Height      : 1920/1080
    
18.         Pixel Format      : 'BGR3' (24-bit BGR 8-8-8)
    
19.         Field             : None
    
20.         Number of planes  : 1
    
21.         Flags             : premultiplied-alpha, 0x000000fe
    
22.         Colorspace        : sRGB
    
23.         Transfer Function : Unknown (0x000000b8)
    
24.         YCbCr/HSV Encoding: Unknown (0x000000ff)
    
25.         Quantization      : Full Range
    
26.         Plane 0           :
    
27.            Bytes per Line : 5760
    
28.            Size Image     : 6220800
    

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使用gstreamer可以正常采集并通过hdmi输出到显示器，命令如下：

1. gst-launch-1.0 v4l2src device=/dev/video40 ! video/x-raw, width=1920, height=1080,framerate=60/1 ! queue max-size-bytes=0 ! kmssink connector-id=205 plane-id=54 fullscreen=1

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使用qt的 qcamera和QCameraViewfinder采集视频并显示报以下错误：

1. 
   
2. root@rk3588:/opt/padview/bin# ./padview
   
3. QStandardPaths: runtime directory '/var/run' is not a directory, but a symbolic link to a directory permissions 0755 owned by UID 0 GID 0
   
4. arm_release_ver: g13p0-01eac0, rk_so_ver: 3
   
5. 0:00:00.016594085  3305   0x7f7c004d60 WARN                 default descriptions.c:825:format_info_get_desc: Missing mpegversion field in mpeg video caps video/mpeg, systemstream=(boolean)false
   
6. CaptureMode Supported CaptureVideo.
   
7. Using mplane plugin for capture
   
8. 0:00:03.233958575  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
   
9. 0:00:03.234863908  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3031:gst_v4l2_object_probe_caps_for_format:<camera_source:src> Could not probe minimum capture size for pixelformat NV12
   
10. 0:00:03.236401284  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
    
11. 0:00:03.237765409  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3037:gst_v4l2_object_probe_caps_for_format:<camera_source:src> Could not probe maximum capture size for pixelformat NV12
    
12. 0:00:03.239355284  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
    
13. 0:00:03.240678867  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3031:gst_v4l2_object_probe_caps_for_format:<camera_source:src> Could not probe minimum capture size for pixelformat NV16
    
14. 0:00:03.242223534  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
    
15. 0:00:03.243586493  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3037:gst_v4l2_object_probe_caps_for_format:<camera_source:src> Could not probe maximum capture size for pixelformat NV16
    
16. 0:00:03.245185701  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
    
17. 0:00:03.246496743  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3031:gst_v4l2_object_probe_caps_for_format:<camera_source:src> Could not probe minimum capture size for pixelformat NV24
    
18. 0:00:03.248046368  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
    
19. 0:00:03.249413243  3305   0x7f7c004d60 WARN                    v4l2 gstv4l2object.c:3037:gst_v4l2_object_probe_caps_for_format:<camera_source:src> Could not probe maximum capture size for pixelformat NV24
    
20. Using mplane plugin for capture
    
21. Unable to query the parameter info: QCameraImageProcessingControl::WhiteBalancePreset : "Invalid argument"
    
22. Unable to query the parameter info: QCameraImageProcessingControl::ColorTemperature : "Invalid argument"
    
23. Unable to query the parameter info: QCameraImageProcessingControl::ContrastAdjustment : "Invalid argument"
    
24. Unable to query the parameter info: QCameraImageProcessingControl::SaturationAdjustment : "Invalid argument"
    
25. Unable to query the parameter info: QCameraImageProcessingControl::BrightnessAdjustment : "Invalid argument"
    
26. Unable to query the parameter info: QCameraImageProcessingControl::SharpeningAdjustment : "Invalid argument"
    
27. 0:00:03.285435080  3305   0x7f7c004d60 WARN            videoencoder gstvideoencoder.c:1797:gst_video_encoder_change_state:<mppvp8enc1> error: Failed to start encoder
    
28. CameraBin error: "Could not initialize supporting library."

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通过各种网络查询大概是说没有找到正确的gstreamer插件，需要配置GST_PLUGIN_PATH环境变量，尝试了也没有解决，请问需要怎么处理呢，谢谢！