vcam

This is a virtual camera that can spoof and communicate with official vendor software. It currently implements the responder (server) side of PTP/USB, PTP/IP, and UPnP. It also perfectly emulates the networking too (requires a recent WiFi card) so that means it can spoof official vendor apps:

Roadmap

Basic PTP responder implementation (thanks Marcus Meissner)
libusb-v1.0.so drop-in replacement - spoof Linux PTP apps
PTP/IP packet & behavior support
Complete Fujifilm X implementation (2015-2020)
Spoof Fujifilm Camera Connect
Spoof EOS Connect
Complete Canon EOS implementation (Digic 4+)
Complete ISO MTP implementation
OTG raspberry pi zero device - works in explorer.exe

Why

For regression testing - link a PTP client against the fake libusb.so and test functionality in CI
For easier prototyping - vcam can be used instead of a physical camera (no need to wait for a camera to recharge to continue testing)
Black box testing - test against vendor software without disassembling
Note that this tool is very experimental, and the code quality reflects that.

Compiling

Run on linux. It can work on WSL if you can route the IP through the Windows firewall.

make vcam
./vcam fuji_x_a2

Compiling fake libusb.so

By default, will target Canon 1300D

sudo apt install libusb-1.0-dev # Needed for libusb.h
make libusb.so

Running WiFi access point

On target Raspberry Pi, install the depencencies needed to run the access point:

sudo apt install haveged hostapd

Power saving mode can make the TCP handshake way too slow:

# Doesn't last a reboot (I think)
sudo iw dev wlan0 set power_save off

pi.mak gets ssh login info from ~/.config/secret.mak

DEVICE_PORT := 22
DEVICE_PASSWORD := xxx
DEVICE_USERNAME := pi
DEVICE_IP := 192.168.1.123
endif

AP_PASS := password for ap, don't define for no password

Compiling vcam for armhf/Raspi Zero

sudo dpkg --add-architecture armhf && sudo apt update
sudo apt install gcc-arm-linux-gnueabi libexif-dev:armhf

make TARGET=pi vcam # Send binary over scp
make TARGET=pi run # run vcam over ssh

Sample X-A2 JPEG images: https://s1.danielc.dev/filedump/fuji_sd.tar.gz -> export to /home/pi/fuji_sdcard

Credits

Original Author (vusb): Marcus Meissner marcus@jet.franken.de
Forked from https://github.com/gphoto/libgphoto2/tree/master/libgphoto2_port/vusb
create_ap scripts from https://github.com/oblique/create_ap
Licensed under the GNU Lesser General Public License v2.1

petabyt/vcam