make fails on a Mac - sg.h not found #38
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There is no SCSI Generic driver for Mac, that's why you get this error message. And this is the reason why Mac is not supported. |
asalamon74
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That was my understanding but a guy supporting Kstars on the Mac said he had Gphoto2 supporting canon on the Mac. I guess they have some sort of USB driver for that. If he or I write that driver, could it be included with pktriggercord ?
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… On Feb 5, 2019, at 2:07 AM, András Salamon ***@***.***> wrote:
There is no SCSI Generic driver for Mac, that's why you get this error message.
And this is the reason why Mac is not supported.
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Maybe they are using some different kind of protocol. Can you share a link to the USB driver you are referring to. |
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I really don’t know much here. @rlancaste of indilib is going to going to look into it. He’s the expert. He may have something.
I’ve found some objective C code for USB access that I thought I could make a library out of, and provide a dylib. I’ve been able to access my Pentax K-5II with it but it would need some “scsi"_read/write functions to be written around it.
… On Feb 5, 2019, at 2:41 PM, András Salamon ***@***.***> wrote:
Maybe they are using some different kind of protocol. Can you share a link to the USB driver you are referring to.
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Yes, the INDI GPhoto driver is built on libgphoto2. This library builds on Linux, Mac, and even Windows. So we are able to provide INDI support on Macs and Linux for Canon, Nikon, and any other cameras that libgphoto2 supports. My understanding is that the library talks directly to the camera to instruct it to take exposures and that the issue with Pentax is that it doesn't include the ability to take exposures this way. Is that correct? |
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Does PKTrigger Cord completely control via USB? |
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So I am guessing that PKTriggerCord uses a different type of connection to the camera than libgphoto2? |
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It seems that modifying the bsd port of the program is more promising. With a simple hack I was able to compile it on a Mac. It still has lots of warnings and need testing. I'll investigate it soon. |
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If you think you can gain access to the Mac USB then I'll hold off making a dylib. Let me know as soon as you can. We may incorporate pktriggercord directly into Kstars and bypass gphoto2 for Pentax. |
I don't have a Mac but maybe I can help explain the state of things. The way the indi_pentax driver works is ekos>>indi>>libgphoto>>pktriggercord. The indi driver wraps to libgphoto which is in turn wrapping to PkTriggercord for calls to the camera using "MSC" (usb:scsi) through the usb port to the camera instead of the PTP used by the other brands. |
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Ok, does libgphoto2 run pktriggercord as a separate program where it executes commands or does it use it as a library with functions that libgphoto2 calls? |
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They import the source code of pktriggercord, you can find it here: https://github.com/gphoto/libgphoto2/tree/master/camlibs/pentax They sync the source code sometimes. Occasionally there ask for changes in pktriggercord to make it easiere to import it, but it's quite rate. For instance: #22 |
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Ok I got it, so the pktriggercord code in libgphoto2 just goes into one of the camlibs in the camlibs folder. You don't have to launch a separate program that gets called. Thank you for the clarification. |
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Thanks @asalamon74 . I looked at the camlibs/pentax folder and it doesn't include USB/SCSI driver so gphoto2 guys must provide one, which makes me wonder why its not working on the Mac, unless they also use a generic scsi driver. I'll see if I can find it but so far its looking like I'll have to write one. |
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I created a hack to compile for Mac OS X. The macosx branch contains it: https://github.com/asalamon74/pktriggercord/tree/macosx Basically I tried to use the BSD port of the program. Since When I connect my camera (K-x) the system recognized it, at least I can get info using I don't know too much about Mac OS X ioctl, so any help would be appreciated. |
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That’s excellent! I have written the ioctl part. I was just trying to test it. Seems to be working but your Mac build will help a lot. Now I can try sending actual camera commands. I copied the scsiio.h also but I think in the end I won’t need it. Question though. My stuff is written in objective C. Can I add it to pk and compile? How to compile with C ? |
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Cause I’m using the Xcode environment. Will gcc recognize objective C? |
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You could do this in terminal on OS X, it worked fine for me in an experiment: mkdir ~/Desktop/test |
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@mccodesurfer Please only use C, not objective C. Gcc might recognize objective C, but we need to compile pktriggercord on different platforms, so the best is to use only ANSI C. |
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May have to provide a library then because the code is not written from scratch. Uses macOS frameworks and libraries. The way I understand it. I just have to put the dylib file in the /usr/local/lib but not sure how to link it in the make file |
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@mccodesurfer If you provide a library then the language of the library is not that important, only the few calls should be written in C. Just hack together something with using the -I -L -l switches (-I for the directory containing the headers, -L for the directory containing the lib, -l for the library linking) and I try to clean it later. |
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Ok. Will do. It may take a week or two. I’m not on it as much as I’d like. |
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@asalamon74 I am close with this macOS driver - getting status from camera failing on commands- I haven't been able to relate your USB description "pentax_scsi_protocol.md" to this doc: https://www.beyondlogic.org/usbnutshell/usb6.shtml#SetupPacket In particular, the pslr_init sets up ioctl for BSD. I have a similar ioctl that uses the setupPacket structure. Your cmd structure is similar (I guess) but I haven't figured out how to form it into the packet structure the macOS uses. |
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Any advice would be great. Thanks |
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pentax_scsi_protocol.md describes a higher level protocol. It describes the byte arrays we send to the camera, the bytes array read from the camera. Probably you don't really need this. The low level interfaces define The |
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Yes, I'm trying to emulate the low level SCSI_read, SCSI_write that call ioctl (in bsd version). In particular, I replace ioctl - this seems to be where the rubber meets the road - with some macOS interfaces. One called "DeviceRequest" use is very similar to ioctl; build a USB byte stream structure with USB byte codes (per the link I gave you) and call DeviceRequest on the structure. From what you're saying, I guess I need to encapsulate the Pentax protocol into the DeviceRequest protocol. I was thinking they were the same level. They seamed to be the same in many respects, like the F0 and TT codes look like bmRequestType and bRequest. Since F0 code defines vendor specific codes to follow, it looks like this byte stream protocol is USB, not Pentax specific. However, F0 in particular does not exactly match the USB protocol in the link - if F0 where bmRequestType, it would be a reserved code. Just thinking out loud here. I guess, I have to find out more about using DeviceRequest. |
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I decided to shift the interface with Wireshark on a pc and see that indeed there is 30 bytes or so preamble to the pentax command codes... still working on it! |
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Got Wireshark on Mac now. Looks like I have to make "interface" transactions, which I had working a while ago but its not working right now. Anyway, just letting you know the status. |
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Good to see you are making progress! I’m wondering if you have given any thought yet as to whether we want to get the code for controlling this into libgphoto or whether we want to make a new INDI driver for pentax entirely ? Obviously the library you are writing could work either way, but I’m just trying to plan ahead for when you finish. Personally I think the best route due to encapsulation and simplicity would be if we can get it into gphoto |
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Thanks Rob! I like the idea of a Pentax driver. Its been almost a year and I don't believe GPhoto2 has yet been updated with some significant fixes in pktethercord. For the future, Pentax has finally come out with an SDK for their cameras but only support releases from the first k-1 and later. But future ports from their SDK could be truly full featured. |
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Any news on this project? It's not clear to me whether there's so far an actual working Mac version of pktriggercord. I tried rlancaste's instructions, but when I run it with sudo, I only keep getting a "Resource busy" message. I also wonder if SIP has to be turned off for this to work (mine is off). I'm testing on 10.13.6 |
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Which command gives "resource busy" |
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I'm still working on it...slowly. Ran into a roadblock on the USB access and got some help on Codementor. The guy steered me in a new direction using new high level Apple API for camera access and control, which looks really easy to use but I'm just getting going on it. It seems to be undocumented - very new I guess. |
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@rlancaste I get this error when I invoke the cmd without arguments. @mccodesurfer Typical for Apple these days. They can't keep up any more. But that API sounds like it won't use SCSI cmds, so are you sure you're not going in the wrong direction there? Or are you implementing a "driver" for that new API? I'm still investigating the "macosx" branch. Am currently getting the project to run in Xcode to make debugging easier. |
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Here's what I've found out so far: this: Changing it to However, the next call fails again: @rlancaste On which macOS version did you test this? And where is This SO question about using SCSI cmds on OSX suggests we'd need a IOKit driver for that: https://stackoverflow.com/a/7349373/43615. So, am I missing something? Do I need to install an extra kext first for this to work? @rlancaste Could it be that you already have some 3rd party SCSI-supporting driver installed that facilitates this, while I do not? An interesting thing is that the cmd |
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@tempelmann It looks like the API will give access to low level commands that will allow me to tunnel the camera commands through the USB interface. So its experimental. |
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So just to be clear. I just test compiled the code. I cannot actually test the code because I don't have a compatible camera. Originally the code would not compile, so I was just verifying that it could be compiled. |
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@rlancaste Oh, bummer then. That means my assessment is correct. Gotta hope @mccodesurfer can get something working, then. Good luck! |
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Well, I'm sorry guys but I've given up on the trying to port to the Mac. It seems every turn ends up a dead end with lack of information. I'm not prepared to put any more time into it. I think the fact that the Pentax is supported on linux is something I can live with. Since Pentax has released new software dev tools, maybe there will be another solution soon. |
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I had another look after learning how to use Apple's native SCSI APIs:
Which means we'd need to use PTP mode so that macOS won't claim the camera's access for itself. But AFAIK, pktriggercord does not work with the camera in PTP mode. So that's not an option. So we need the camera to be in MSC mode - but then macOS takes over. A way out of this dilemma might be to make a simple IOKit KEXT that prevents macOS from inserting its mass storage driver. Technically, the kext probably won't need any code, but only a plist that reserves itself for the Vendor ID of Pentax cameras (0x25fb, I think). That should prevent Apple's IOKit drives from taking over. But: Apple has announced that KEXTs won't be allowed in macOS in the future, for (in this case unnecesary and counterproductive) security reasons. Still, with older macOS versions (before macOS 12 "Monterey"), a KEXT might be possible, maybe even still thereafter; Apple is quite vague about this (they say that some types may still be allowed). So, let's assume we can make such a kext. Then the next problem is that the SCSI driver won't get loaded either, I believe, and therefore the SCSI API won't be usable either. But without the SCSI API, we'll have to talk to the Camera via the USB API instead. So the big question is: How do we send SCSI commands over USB? That's the part I don't understand yet. How does one use the lower level USB protocol to talk SCSI-over-USB? Are there special USB channels involved in that, or do the scsi commands get wrapped somehow? Does someone have insight in this? Or does pktriggercord even do this already in cases where there's no SCSI-pass-thru? |
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So, one thing that might help here is that we already disable the PTP Camera program because we have to do that to control Canon cameras and I think other DSLR's as well. That means that it does not get taken over by MacOS and is left open for gphoto control. That's already a part of KStars https://github.com/KDE/kstars/blob/ff1ac9cfeb1f11b4fb8725b643ae9e0c8950ab09/kstars/ekos/manager.cpp#L857 I don't know if this will help resolve the issue you mentioned here, but maybe. |
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@rlancaste Thanks for keeping an eye on this topic. The code you've shown is handling a user-owner process, though, which is easy to deal with (i.e. simply force-quit it) in order to release any hold on the PTP device. With the block storage device this is more difficult because it's macOS (i.e. the kernel) that takes over control of it. And there are no APIs to force it to give it up. I am currently exploring a different path, though. I have been able to open the endpoints to my K-5 when it's in PTP mode (but not in MSC mode - there I can only open the "usb device" services, but not the "usb interface" services). I've also found the docs on how to send SCSI cmds over USB, at least for the "BOT" mode. Can all supported Pentax cameras be used with pktriggercard in PTP mode, or do some of them only work with MSC? |
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I have had no luck with tethering my Pentax Cameras to Lightroom. Ricoh website was not helpful, hoping that they will work things out.
…-----Original Message-----
From: Thomas Tempelmann ***@***.***>
To: asalamon74/pktriggercord ***@***.***>
Cc: Subscribed ***@***.***>
Sent: Wed, Feb 9, 2022 4:01 pm
Subject: Re: [asalamon74/pktriggercord] make fails on a Mac - sg.h not found (#38)
@rlancaste Thanks for keeping an eye on this topic. The code you've shown is handling a user-owner process, though, which is easy to deal with (i.e. simply force-quit it) in order to release any hold on the PTP device. With the block storage device this is more difficult because it's macOS (i.e. the kernel) that takes over control of it. And there are no APIs to force it to give it up.I am currently exploring a different path, though. I have been able to open the endpoints to my K-5 when it's in PTP mode (but not in MSC mode - there I can only open the "usb device" services, but not the "usb interface" services).Can all Pentax cameras be used with pktriggercard in PTP mode, or do some of them only work with MSC?—
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No problem, sorry I can't be more help with it, I don't have as much experience working with lower level stuff. I modified a couple of INDI drivers to make them work better on Macs, but they didn't need the kind of work you are talking about. But if you get the pktriggercord program working on Mac, I can help by getting it in the 3rdParty build and I can get it building with the rest of the MacOS build for KStars and INDI on craft. I'm currently working toward the goal of getting it to do nightly builds on the server. |
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Anything on my question whether pgtriggercord works with the camera being in PTP mode instead of MSC? I can't find a definitive answer in the docs or the code on this. |
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This PKTriggercord doc shows that it uses MSC - I tried to work on this a long time ago and gave up. I later employed Codementor help but it seems one would have to use ImageCapture (or its successor) to talk to the Camera. But it would be great if someone found an alternative |
Hi, There seems to be a missing file in the repository. make fails with "scsi/sg.h not found" after cloning the repo and running make on a Mac.
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