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wiki:rockchip [2013/06/26 11:15] – [Available flavors] autostaticwiki:rockchip [2013/06/26 11:40] (current) – [Patching JACK] autostatic
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 ====== Rockchip based devices and real-time, low-latency audio ====== ====== Rockchip based devices and real-time, low-latency audio ======
  
-Wiki article on using [[http://en.wikipedia.org/wiki/Rockchip|Rockchip]] based devices with real-time, lo-latency audio.+Wiki article on using [[http://en.wikipedia.org/wiki/Rockchip|Rockchip]] based devices with real-time, low-latency audio.
  
 <note warning>Draft. Work in progress.</note> <note warning>Draft. Work in progress.</note>
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 |  {{  :wiki:user:mk808.png?350  }}//MK808 RK3066 based Android TV stick//  | |  {{  :wiki:user:mk808.png?350  }}//MK808 RK3066 based Android TV stick//  |
  
-|  {{  :wiki:user:mk809iii_qc802_rk3188_quad_core_mini_pc_android_4_2_tv_box_bluetooth_iptv_hdmi.jpg?350|  }}//MK809III RK3188 based Android TV stick//  |+|  {{  :wiki:user:mk809iii_qc802_rk3188_quad_core_mini_pc_android_4_2_tv_box_bluetooth_iptv_hdmi.jpg?350 }}//MK809III RK3188 based Android TV stick//  |
  
 ===== Linux ===== ===== Linux =====
  
-Rockchip based devices are mostly sold as PC-on-a-stick devices with Android pre-installed. But in order to use these devices as real-time, low-latency audio appliances you will want to install Linux on them. The necessary tools and kernel sources to do so are available and especially the rk3066 based devices are almost fully supported.+Rockchip based devices are mostly sold as PC-on-a-stick devices with Android pre-installed. But in order to use these devices as real-time, low-latency audio appliances you will want to install Linux on them. The necessary tools and kernel sources to do so are available and especially the RK3066 based devices are almost fully supported.
  
-[[http://linux.autostatic.com/installing-linux-on-a-rk3066-based-device|Installing Linux on a rk3066 based device]]+[[http://linux.autostatic.com/installing-linux-on-a-rk3066-based-device|Installing Linux on a RK3066 based device]]
  
 ===== Using JACK ===== ===== Using JACK =====
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 JACK was designed from the ground up for professional audio work, and its design focuses on two key areas: synchronous execution of all clients, and low latency operation."//((http://jackaudio.org/)) JACK was designed from the ground up for professional audio work, and its design focuses on two key areas: synchronous execution of all clients, and low latency operation."//((http://jackaudio.org/))
  
-==== Patching JACK ====+==== Building JACK from source ====
  
-You will need a recent git checkout of Jack2 or a patched Jack1 for Rockchip based devices otherwise you will encounter the infamous "Bus error" when starting JACK.  This is because JACK uses packed structs and the Rockchip RK3066/RK3188 platforms don't like those: http://comments.gmane.org/gmane.comp.audio.jackit/26713.+You will need a recent git checkout of Jack2 or a patched Jack1 for usage on Rockchip based devices otherwise you will encounter the infamous "Bus error" when starting JACK.  This is because JACK uses packed structs and the Rockchip RK3066/RK3188 platforms don't like those: http://comments.gmane.org/gmane.comp.audio.jackit/26713.
  
 Patches can be found here: https://github.com/AutoStatic/jack-armel Patches can be found here: https://github.com/AutoStatic/jack-armel
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 When using Jack2 you might want to disable dbus dependent code in JACK components if you want to run Jack2 on a headless RPi (so without X). You can do this by building Jack2 from source without the ''--dbus'' option. When using Jack2 you might want to disable dbus dependent code in JACK components if you want to run Jack2 on a headless RPi (so without X). You can do this by building Jack2 from source without the ''--dbus'' option.
 +
 +==== Packages ====
 +
 +http://rk.autostatic.com/
 +
 +This repository currently only contains patched Jack1 and recent Jack2 packages for Ubuntu 12.04/12.10 and Debian Wheezy that should work on most ARM based platforms. Instructions on how to add the repository are on the site. After having updated your package index files it's just a matter of ''sudo apt-get --no-install-recommends install jackdx'' with ''x'' being the JACK version you'd like to install.
wiki/rockchip.1372238126.txt.gz · Last modified: 2013/06/26 11:15 by autostatic