我有两个独立的设置
设置 1：
- 巴斯勒 -> MIPI0 -> ISP0
- mt9034 -> MIPI1 -> ISI1
设置 2：
- mt9034 -> MIPI0 -> ISI0
- 巴斯勒 -> MIPI1 -> ISP1
mt9034 只是任何相机的替代品，与我无关。
v4l2-ctl -d /dev/video3 --stream-mmap=4 --verbose
VIDIOC_QUERYCAP: ok
VIDIOC_REQBUFS returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_STREAMON returned 0 (Success)
cap dqbuf: 0 seq: 0 bytesused: 4147200 ts: 1512.118705 delta: 1512118.705 ms (ts-monotonic, ts-src-eof)
但是当我尝试使用设置 2 进行完全相同的设置时，我立即收到错误消息
v4l2-ctl -d /dev/video3 --stream-mmap=4 --verbose
VIDIOC_QUERYCAP: ok
VIDIOC_REQBUFS returned -1 (Resource temporarily unavailable)
设置 2 的媒体管道和 v4l2-ctl 输出：
# media-ctl -p
Media controller API version 5.10.72
Media device informa
tion
------------------------
driver mxc-md
model FSL Capture Media Device
serial
bus info
hw revision 0x0
driver version 5.10.72
Device topology
- entity 1: mxc_isi.0 (16
pads, 2 links)
type V4L2 subdev subtype Unknown flags 0
pad0: Sink
<- "mxc-mipi-csi2.0":4 [ENABLED]
pad1: Sink
pad2: Sink
pad3: Sink
pad4: Sink
pad5: Sink
pad6: Sink
pad7: Sink
pad8: Sink
pad9: Sink
pad10: Sink
pad11: Sink
pad12: Source
-> "mxc_isi.0.capture":0 [ENABLED]
pad13: Source
pad14: Source
pad15: Sink
- entity 18: mxc_isi.0.capture (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video2
pad0: Sink
<- "mxc_isi.0":12 [ENABLED]
- entity 22: mxc-mipi-csi2.0 (8 pads, 2 links)
type Node subtype V4L flags 0
device node name /dev/v4l-subdev0
pad0: Sink
<- "mt9034 4-0010":0 [ENABLED,IMMUTABLE]
pad1: Sink
pad2: Sink
pad3: Sink
pad4: Source
-> "mxc_isi.0":0 [ENABLED]
pad5: Source
pad6: Source
pad7: Source
- entity 31: mxc-mipi-csi2.1 (8 pads, 1 link)
type Node subtype V4L flags 0
device node name /dev/v4l-subdev1
pad0: Sink
<- "basler-camera-vvcam 5-0036":0 [ENABLED,IMMUTABLE]
pad1: Sink
pad2: Sink
pad3: Sink
pad4: Source
pad5: Source
pad6: Source
pad7: Source
- entity 40: basler-camera-vvcam 5-0036 (1 pad, 1 link)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev2
pad0: Source
-> "mxc-mipi-csi2.1":0 [ENABLED,IMMUTABLE]
- entity 42: mt9034 4-0010 (1 pad, 1 link)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev3
pad0: Source
[fmt:UYVY8_2X8/640x720 field:none colorspace:srgb
crop:(0,0)/640x720]
-> "mxc-mipi-csi2.0":0 [ENABLED,IMMUTABLE]
# media-ctl -p -d /dev/media1
Media controller API version 5.10.72
Media device information
------------------------
driver vvcam-video
model viv_media
serial
bus info
hw revision 0x0
driver version 5.10.72
Device topology
- entity 1: viv_v4l21 (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video3
pad0: Sink
<- "vvcam-isp.1":0 [ENABLED]
- entity 5: vvcam-isp.1 (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/v4l-subdev4
pad0: Source
-> "viv_v4l21":0 [ENABLED]
- entity 7: vvcam-dwe.1 (2 pads, 0 link)
type Node subtype V4L flags 0
device node name /dev/v4l-subdev5
pad0: Source
pad1: Sink
# v4l2-ctl -d /dev/video3 -D
Driver Info:
Driver name : viv_v4l2_device
Card type : VIV
Bus info : platform:viv1
Driver version : 5.10.72
Capabilities : 0x84200001
Video Capture
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x04200001
Video Capture
Streaming
Extended Pix Format
Media Driver Info:
Driver name : vvcam-video
Model : viv_media
Serial :
Bus info :
Media version : 5.10.72
Hardware revision: 0x00000000 (0)
Driver version : 5.10.72
Interface Info:
ID : 0x03000003
Type : V4L Video
Entity Info:
ID : 0x00000001 (1)
Name : viv_v4l21
Function : V4L2 I/O
Pad 0x01000002 : 0: Sink, Must Connect
Link 0x0200000a: from remote pad 0x1000009 of entity 'vvcam-isp.1': Data, Enabled
# v4l2-ctl --list-devices
[ 349.939100] enter isp_mi_stop
():
/dev/v4l-subdev0
():
/dev/v4l-subdev1
/dev/v4l-subdev4
/dev/v4l-subdev5
(csi1):
/dev/v4l-subdev2
mxc-isi-cap (platform:32e00000.isi:cap_devic):
/dev/video2
FSL Capture Media Device (platform:mxc-md):
/dev/media0
VIV (platform:viv1):
/dev/video3
vsi_v4l2dec (platform:vsi_v4l2dec):
/dev/video1
vsi_v4l2enc (platform:vsi_v4l2enc):
/dev/video0
viv_media (platform:vvcam-video):
/dev/media1
我确实在 dmesg 中注意到两种设置之间的差异。当我尝试在设置 2 期间使用上面的 v4l2 命令进行流式传输时，我每次都会看到此输出。它没有出现在设置 1 中。
[ 1481.632505] viv_post_event: unsubscribed event id =2 type=0x08002000
[ 1482.584451] viv_post_event: unsubscribed event id =14 type=0x08002000
[ 1482.748439] viv_post_event: unsubscribed event id =14 type=0x08002000
[ 1482.924447] viv_post_event: unsubscribed event id =1 type=0x08002000
据我所知，isp 已成功启动
Oct 26 18:24:35 ucm-imx8m-plus systemd[1]: Started ISP i.MX 8Mplus daemon.
Oct 26 18:24:35 ucm-imx8m-plus start_isp.sh[1458]: Starting isp_media_server
Oct 26 18:24:35 ucm-imx8m-plus start_isp.sh[1458]: DAA3840_30MC_266 on ISP 1
Oct 26 18:24:35 ucm-imx8m-plus start_isp.sh[1458]: RUN_SCRIPT=/opt/imx8-isp/bin/run.sh
Oct 26 18:24:35 ucm-imx8m-plus start_isp.sh[1458]: RUN_SCRIPT_PATH=/opt/imx8-isp/bin
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Apply configuration DAA3840_30MC_266...
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Loading module basler-camera-driver-vvcam ...
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: basler_camera_driver_vvcam
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1538]: basler_camera_driver_vvcam 20480 0
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: basler-camera-driver-vvcam already loaded.
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Loading module imx8-media-dev ...
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: imx8_media_dev
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Loaded /lib/modules/5.10.72/kernel/drivers/staging/media/imx/imx8-media-dev.ko
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Loading module vvcam-video ...
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: vvcam_video
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1562]: vvcam_video 36864 0
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: vvcam-video already loaded.
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Loading module vvcam-dwe ...
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: vvcam_dwe
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1567]: vvcam_dwe 28672 1
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: vvcam-dwe already loaded.
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Loading module vvcam-isp ...
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: vvcam_isp
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1572]: vvcam_isp 65536 1
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: vvcam-isp already loaded.
Oct 26 18:24:36 ucm-imx8m-plus start_isp.sh[1458]: Starting isp_media_server with configuration CAMERA1
