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# libsurvive
**WARNING PROJECT NOT YET IN EXPERIMENTAL PHASE**
Discord: https://discordapp.com/invite/7QbCAGS
## Livestream collection
| Note | Youtube URL | Run time |
| -------------------------------------- | ------------------------------------------- | -------- |
| First livestream | https://www.youtube.com/watch?v=sv_AVI9kHN4 | 5:01:25 |
| Second livestream | https://www.youtube.com/watch?v=gFyEbGQ88s4 | 4:03:26 |
| Summary of first and second livestream | https://www.youtube.com/watch?v=oHJkpNakswM | 23:00 |
| Third livestream | https://www.youtube.com/watch?v=RExji5EtSzE | 4:11:16 |
| Fourth livestream | https://www.youtube.com/watch?v=fces1O7kWGY | 4:50:33 |
| Fifth livestream | https://www.youtube.com/watch?v=hHt3twW5_fI | 3:13:38 |
| Sixth livestream | https://www.youtube.com/watch?v=JsfkNRFkFM4 | 3:44:49 |
Notes from second livestream trying to reverse engineer the watchman protocol: https://gist.github.com/cnlohr/581c433f36f4249f8bbc9c2b6450ef0e
Please see the issues for what help needs to be done now!
## Extra resources
HackADay article and video with Dr. Yates on how they made the Vive a thing. http://hackaday.com/2016/12/21/alan-yates-why-valves-lighthouse-cant-work/
## Introduction
High-performance HTC Vive Library
I say "high-performance" really this project is based tightly off of OSVR-Vive-Libre, but, specifically is an attempt to:
1. Minimize external libraries. Actual reason for starting this: Downloading all of the libraries needed for OSVR-Vive-Libre maxed out my data plan.
2. Put it under an open-source instead of a force-source license. (GPL to MIT/X11)
3. Write it in C.
4. Avoid extra layers where convenient.
5. (long shot) Make the vive vivable for use with Intel Integrated Graphics systems.
Will ~~I~~ we succeed? Probably not.
Definitely going to try!
## External dependencies
* libUSB
* pthread
* libX11 (where applicable)
* zlib (may use puff.c if needed)
If I ever get to video output... OpenGL.
## Architecture
There is an internal representation and an external representation. These lines may get blurred. Internal representation lives in .h files in the ```src/``` folder. External lives in ```include/``` folder.
It is written in some fairly stout "layers" which are basically just function calls:
| Layer | Description | Status |
| ------- | ------------- | -------- |
| survive_usb.c | Data is taken in at "survive_usb.c" from libusb. | Done |
| survive_data.c | Raw HID messages are processed into logical "light" "analog" and "imu" messages. | Mostly done, Missing light data from controllers, and lighthouse data. |
| survive_process.c | Process the high-level data into solutions for | Not yet started. Will be done by ultramn |
I may or may not read data from the Vive regarding configuration. If I do, it would be added to the survive_usb.c
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