Re: help to grab frames from a Pyro 1394 web cam

[D. Lopez-De-I. <dl...@en...>]

Hi,

> Check out Coriander at http://sourceforge.net/projects/coriander/. It lets
> can improve upon the video I/O portions of the code because it works for me,
I haven't managed to obtain images from my Pyro web-cam neither with
coriander nor with the simple samplegrab application.

My setup is as follows:

camera: Pyro 1394 web cam
kernel version = 2.4.2
ieee 1394 version = ieee1394-2.4.2-20010228 (I applied this patch to my
kernel), the one available at linux1394.sourceforge.net site 
libraw version = 0.8.2
libdc version = 0.8.1
driver = OHCI 
adapter card = Belkin IEEE-1394 PCI (OHCI 1.0 compliant), IEEE1394a Rev 5
compliant
version of coriander used: 0.12
output of /proc/ohci1394:
IEEE-1394 OHCI Driver status report:
  bus number: 0x3ff Node ID: 0x0

### Host data ###
node_count:        2  node_id   : 0000FFC0
irm_id    : 0000FFFF  busmgr_id : 0000FFFF
initialized  
   

---Iso Receive DMA---
Current buf: 0 offset: 0

---Async Receive DMA---
Ar req current buf: 0 offset: 16
AR resp current buf: 1 offset: 3308

---Async Transmit DMA---
AT req prg: 9 sent: 9 free: 32 branchAddrPtr: c8b4f008
AT req queue: first: 00000000 last: 00000000
AR resp prg: 0 sent: 0 free: 32 branchAddrPtr: 00000000
AT resp queue: first: 00000000 last: 00000000

### HC Register dump ###
Version     : 01010000  GUID_ROM    : 00000024  ATRetries   : 00000822
CSRData     : 00000000  CSRCompData : 00000000  CSRControl  : 80000000
ConfigROMhdr: 0404ad02  BusID       : 31333934  BusOptions  : f07da002
GUIDHi      : 0030bd0b  GUIDLo      : 00000000  ConfigROMmap: 08b6a000
PtdWrAddrLo : 00000000  PtdWrAddrHi : 00000000  VendorID    : 00000000
HCControl   : 000e0000  SelfIDBuffer: 08b68000  SelfIDCount : 00010014
IRMuChMaskHi: 00000000  IRMuChMaskLo: 00000000  IntEvent    : 00700000
IntMask     : 840300ff  IsoXmIntEvnt: 00000000  IsoXmIntMask: 00000000
IsoRcvIntEvt: 00000000  IsoRcvIntMsk: 00000001  FairnessCtrl: 00000000
LinkControl : 00300200  NodeID      : 8800ffc0  PhyControl  : 0000017f
IsoCyclTimer: ae03173d  AsRqFilterHi: ffffffff  AsRqFilterLo: ffffffff
PhyReqFiltHi: ffffffff  PhyReqFiltLo: ffffffff  PhyUpperBnd : 00000000
AsRqTrCxtCtl: 00008012  AsRqTrCmdPtr: 08b4f000  AsRsTrCtxCtl: 00000000
AsRsTrCmdPtr: 00000000  AsRqRvCtxCtl: 00008409  AsRqRvCmdPtr: 08b26000
AsRsRvCtxCtl: 00008451  AsRsRvCmdPtr: 08bac000  IntEvent    : 00700000
IsoRCtxCtl00: d0008400  IsoRCmdPtr00: 08af6001  IsoRCxtMch00: f0000000
IsoRCtxCtl01: 00000000  IsoRCmdPtr01: 00000000  IsoRCxtMch01: 00000000
IsoRCtxCtl02: 00000000  IsoRCmdPtr02: 00000000  IsoRCxtMch02: 00000000
IsoRCtxCtl03: 00000000  IsoRCmdPtr03: 00000000  IsoRCxtMch03: 00000000
IsoRCtxCtl04: 00000000  IsoRCmdPtr04: 00000000  IsoRCxtMch04: 00000000
IsoRCtxCtl05: 00000000  IsoRCmdPtr05: 00000000  IsoRCxtMch05: 00000000
IsoRCtxCtl06: 00000000  IsoRCmdPtr06: 00000000  IsoRCxtMch06: 00000000
IsoRCtxCtl07: 00000000  IsoRCmdPtr07: 00000000  IsoRCxtMch07: 00000000
IsoTCtxCtl00: 00000000  IsoTCmdPtr00: 00000000
IsoTCtxCtl01: 00000000  IsoTCmdPtr01: 00000000
IsoTCtxCtl02: 00000000  IsoTCmdPtr02: 00000000
IsoTCtxCtl03: 00000000  IsoTCmdPtr03: 00000000
IsoTCtxCtl04: 00000000  IsoTCmdPtr04: 00000000
IsoTCtxCtl05: 00000000  IsoTCmdPtr05: 00000000
IsoTCtxCtl06: 00000000  IsoTCmdPtr06: 00000000
IsoTCtxCtl07: 00000000  IsoTCmdPtr07: 00000000

The application coriander returns the message:

node 0 is not a camera, and after a long while shows up a small window,
saying something like that the connection with IEEE1394 may be slow. If I
cancel the window, this still keeps coming back every now and then, till I
Ctrl-C coriander.

If there is somebody that can appreciate any problem with my setup that
may make coriander not work I would appreciate their feedback.

Although I used to manage to at least obtain a corrupted image using the
samplegrab utility, now it hungs up in the call
dc1394_start_iso_transmission to the libdc library. This application
detects I have a Pyro web-cam attached to my system and manages to print
out the list of features offered by this camera.

Any hints and help are very much appreciated.

Regards,

-----
Diego Lopez de Ipina
http://www-lce.eng.cam.ac.uk/~dl231