使用qt的qcamera采集rk_hdmirx输入的视频流报错
本帖最后由 drinker 于 2023-10-8 17:10 编辑通过hdmi输入接口的设备为/dev/video40,信息如下
root@rk3588:/# v4l2-ctl -d /dev/video40-V -D
Driver Info:
Driver name : rk_hdmirx
Card type : rk_hdmirx
Bus info : fdee0000.hdmirx-controller
Driver version : 5.10.160
Capabilities : 0x84201000
Video Capture Multiplanar
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04201000
Video Capture Multiplanar
Streaming
Extended Pix Format
Format Video Capture Multiplanar:
Width/Height : 1920/1080
Pixel Format : 'BGR3' (24-bit BGR 8-8-8)
Field : None
Number of planes: 1
Flags : premultiplied-alpha, 0x000000fe
Colorspace : sRGB
Transfer Function : Unknown (0x000000b8)
YCbCr/HSV Encoding: Unknown (0x000000ff)
Quantization : Full Range
Plane 0 :
Bytes per Line : 5760
Size Image : 6220800
使用gstreamer可以正常采集并通过hdmi输出到显示器，命令如下：
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
使用qt的 qcamera和QCameraViewfinder采集视频并显示报以下错误：
root@rk3588:/opt/padview/bin# ./padview
QStandardPaths: runtime directory '/var/run' is not a directory, but a symbolic link to a directory permissions 0755 owned by UID 0 GID 0
arm_release_ver: g13p0-01eac0, rk_so_ver: 3
0:00:00.0165940853305 0x7f7c004d60 WARN default descriptions.c:825:format_info_get_desc: Missing mpegversion field in mpeg video caps video/mpeg, systemstream=(boolean)false
CaptureMode Supported CaptureVideo.
Using mplane plugin for capture
0:00:03.2339585753305 0x7f7c004d60 WARN v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
0:00:03.2348639083305 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
0:00:03.2364012843305 0x7f7c004d60 WARN v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
0:00:03.2377654093305 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
0:00:03.2393552843305 0x7f7c004d60 WARN v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
0:00:03.2406788673305 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
0:00:03.2422235343305 0x7f7c004d60 WARN v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
0:00:03.2435864933305 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
0:00:03.2451857013305 0x7f7c004d60 WARN v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
0:00:03.2464967433305 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
0:00:03.2480463683305 0x7f7c004d60 WARN v4l2 gstv4l2object.c:3159:gst_v4l2_object_get_nearest_size:<camera_source:src> Unable to try format: Invalid argument
0:00:03.2494132433305 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
Using mplane plugin for capture
Unable to query the parameter info: QCameraImageProcessingControl::WhiteBalancePreset : "Invalid argument"
Unable to query the parameter info: QCameraImageProcessingControl::ColorTemperature : "Invalid argument"
Unable to query the parameter info: QCameraImageProcessingControl::ContrastAdjustment : "Invalid argument"
Unable to query the parameter info: QCameraImageProcessingControl::SaturationAdjustment : "Invalid argument"
Unable to query the parameter info: QCameraImageProcessingControl::BrightnessAdjustment : "Invalid argument"
Unable to query the parameter info: QCameraImageProcessingControl::SharpeningAdjustment : "Invalid argument"
0:00:03.2854350803305 0x7f7c004d60 WARN videoencoder gstvideoencoder.c:1797:gst_video_encoder_change_state:<mppvp8enc1> error: Failed to start encoder
CameraBin error: "Could not initialize supporting library."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！
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