LINUX usb 摄像头端点选用

hui_se0

忙USBUSB摄像头驱动有一段时间了还是没有多大进展，今天晚上把摄像头插入  cat /proc/bus/usb/devices 之后出现了摄像头的相关信息如下:
T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  4 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=0c45 ProdID=613b Rev= 1.01
S:  Product=USB camera
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 1 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS= 128 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 2 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS= 256 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 3 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS= 384 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 4 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS= 512 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 5 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS= 680 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 6 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS= 800 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 7 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS= 900 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
I:  If#= 0 Alt= 8 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=skeleton
E:  Ad=81(I) Atr=01(Isoc) MxPS=1023 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=100ms
参数显示所有的endpoint全是in 这是不是有问题呢？如果全是in 那怎么设置采集参数？此外我我在编程时应该选用哪个端点合适些？MxPS是选大好还是小号？还有就是那个事传说中的 0 号端点？
     谢谢大家  请大家指点！