我在为Caspa mt9v032 omap-isp获取正确的media-ctl命令时遇到问题。 我按照本教程但未能成功 - ＆gt; Camera-ISP Driver 本教程提供了更多详细信息，但也无法成功： - ＆gt; Linux:Camera
我的媒体设备信息列表：
Opening media device /dev/media0
Enumerating entities
Found 16 entities
Enumerating pads and links
Media controller API version 0.0.0
Media device information
------------------------
driver omap3isp
model TI OMAP3 ISP
serial
bus info
hw revision 0xf0
driver version 0.0.0
Device topology
- entity 1: OMAP3 ISP CCP2 (2 pads, 2 links)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev0
pad0: Sink
[fmt:SGRBG10/4096x4096]
<- "OMAP3 ISP CCP2 input":0 []
pad1: Source
[fmt:SGRBG10/4096x4096]
-> "OMAP3 ISP CCDC":0 []
- entity 2: OMAP3 ISP CCP2 input (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video0
pad0: Source
-> "OMAP3 ISP CCP2":0 []
- entity 3: OMAP3 ISP CSI2a (2 pads, 2 links)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev1
pad0: Sink
[fmt:SGRBG10/4096x4096]
pad1: Source
[fmt:SGRBG10/4096x4096]
-> "OMAP3 ISP CSI2a output":0 []
-> "OMAP3 ISP CCDC":0 []
- entity 4: OMAP3 ISP CSI2a output (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video1
pad0: Sink
<- "OMAP3 ISP CSI2a":1 []
- entity 5: OMAP3 ISP CCDC (3 pads, 9 links)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev2
pad0: Sink
[fmt:SGRBG10/752x480]
<- "OMAP3 ISP CCP2":1 []
<- "OMAP3 ISP CSI2a":1 []
<- "mt9v032 3-005c":0 [ENABLED]
pad1: Source
[fmt:SGRBG10/752x480
crop.bounds:(0,0)/752x480
crop:(0,0)/752x480]
-> "OMAP3 ISP CCDC output":0 []
-> "OMAP3 ISP resizer":0 []
pad2: Source
[fmt:SGRBG10/640x479]
-> "OMAP3 ISP preview":0 [ENABLED]
-> "OMAP3 ISP AEWB":0 [ENABLED,IMMUTABLE]
-> "OMAP3 ISP AF":0 [ENABLED,IMMUTABLE]
-> "OMAP3 ISP histogram":0 [ENABLED,IMMUTABLE]
- entity 6: OMAP3 ISP CCDC output (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video2
pad0: Sink
<- "OMAP3 ISP CCDC":1 []
- entity 7: OMAP3 ISP preview (2 pads, 4 links)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev3
pad0: Sink
[fmt:SGRBG10/640x479
crop.bounds:(10,4)/622x471
crop:(10,4)/622x471]
<- "OMAP3 ISP CCDC":2 [ENABLED]
<- "OMAP3 ISP preview input":0 []
pad1: Source
[fmt:YUYV/622x471]
-> "OMAP3 ISP preview output":0 []
-> "OMAP3 ISP resizer":0 [ENABLED]
- entity 8: OMAP3 ISP preview input (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video3
pad0: Source
-> "OMAP3 ISP preview":0 []
- entity 9: OMAP3 ISP preview output (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video4
pad0: Sink
<- "OMAP3 ISP preview":1 []
- entity 10: OMAP3 ISP resizer (2 pads, 4 links)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev4
pad0: Sink
[fmt:YUYV/622x471
crop.bounds:(0,0)/621x471
crop:(0,0)/621x471]
<- "OMAP3 ISP CCDC":1 []
<- "OMAP3 ISP preview":1 [ENABLED]
<- "OMAP3 ISP resizer input":0 []
pad1: Source
[fmt:YUYV/640x480]
-> "OMAP3 ISP resizer output":0 [ENABLED]
- entity 11: OMAP3 ISP resizer input (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video5
pad0: Source
-> "OMAP3 ISP resizer":0 []
**- entity 12: OMAP3 ISP resizer output (1 pad, 1 link)
type Node subtype V4L
device node name /dev/video6
pad0: Sink
<- "OMAP3 ISP resizer":1 [ENABLED]
- entity 13: OMAP3 ISP AEWB (1 pad, 1 link)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev5
pad0: Sink
<- "OMAP3 ISP CCDC":2 [ENABLED,IMMUTABLE]
- entity 14: OMAP3 ISP AF (1 pad, 1 link)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev6
pad0: Sink
<- "OMAP3 ISP CCDC":2 [ENABLED,IMMUTABLE]
- entity 15: OMAP3 ISP histogram (1 pad, 1 link)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev7
pad0: Sink
<- "OMAP3 ISP CCDC":2 [ENABLED,IMMUTABLE]
- entity 16: mt9v032 3-005c (1 pad, 1 link)
type V4L2 subdev subtype Unknown
device node name /dev/v4l-subdev8
pad0: Source
[fmt:SGRBG10/752x480
crop:(1,5)/752x480]
-> "OMAP3 ISP CCDC":0 [ENABLED]**
我猜视频6从实体12开始。我试图提供以下media-ctl提交，但它无法正常工作。
$ media-ctl -r -l '"mt9v032 3-005c":0->"OMAP3 ISP CCDC":0[1], "OMAP3
ISP CCDC":2->"OMAP3 ISP preview":0[1], "OMAP3 ISP preview":1->"OMAP3
ISP resizer":0[1], "OMAP3 ISP resizer":1->"OMAP3 ISP resizer
output":0[1]'
$ media-ctl -V '"mt9v032 3-005c":0[SGRBG10 752x480], "OMAP3 ISP
CCDC":2[SGRBG10 752x480], "OMAP3 ISP preview":1[UYVY 752x480], "OMAP3
ISP resizer":1[UYVY 752x480]'
在给出这些命令之后，当我尝试运行任何Gstreamer管道时，我收到以下错误：
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Failed to enumerate possible video formats device '/dev/video6' can work with
...
Failed to get number 0 in pixelformat enumeration for /dev/video6. (25 - Inappropriate ioctl for device)
任何人都可以告诉我如何设置正确的media-ctl命令。
答案 0 :(得分：1)
media-ctl -v -r -l '"mt9v032 3-005c":0->"OMAP3 ISP CCDC":0[1], "OMAP3 ISP CCDC":2->"OMAP3 ISP preview":0[1], "OMAP3 ISP preview":1->"OMAP3 ISP resizer":0[1], "OMAP3 ISP resizer":1->"OMAP3 ISP resizer output":0[1]'
media-ctl -v -V '"mt9v032 3-005c":0[SGRBG10 640x480], "OMAP3 ISP CCDC":2[SGRBG10 640x480], "OMAP3 ISP preview":1[UYVY 640x480], "OMAP3 ISP resizer":1[UYVY 640x480]'
答案 1 :(得分：0)
确保使用gstreamer的调试信息 http://docs.gstreamer.com/display/GstSDK/Basic+tutorial+11%3A+Debugging+tools
我必须修补gstreamer和omap isp才能使流式传输正常工作 但是使用测试视频源可以测试管道。
我使用Overo与DM3730，caspa和tobi / palo35 /栗子