Contents - Raspberry PI Community Projects

ilclient helper library
This library is described as: This API defines helper functions for
writing IL clients.
*
* This file defines an IL client side library. This is useful when
* writing IL clients, since there tends to be much repeated and
* common code across both single and multiple clients. This library
* seeks to remove that common code and abstract some of the
* interactions with components. There is a wrapper around a
* component and tunnel, and some operations can be done on lists of
* these. The callbacks from components are handled, and specific
* events can be checked or waited for.
*/
Libraries
libbcm_host
bcm_host is the Broadcom hardware interface library.
vc_dispmanx_*
Dispmanx is a windowing system in the process of being deprecated in favour of
OpenWF (http://www.khronos.org/openwf/) (or similar), however dispmanx is still used
in all API demos and it's replacement may not yet be available. [1] (confirmation
required?)
vc_tvservice_*
These APIs allow controlling the HDMI and SDTV video outputs of the Raspberry Pi, as
well as allowing the user to query the supported HDMI resolutions and audio formats and
turn on/off copy protection. The Raspberry Pi can only have one output active at a time -
turning on the HDMI automatically turns off the SDTV and vice-versa. However either
can be turned off using the vc_tv_power_off() function.
The header file vc_tvservice.h (https://github.com/raspberrypi/firmware/blob/master/opt/
vc/include/interface/vmcs_host/vc_tvservice.h) documents the functions quite well via
comments above each prototype function, however before any of these functions will
succeed you must initialise the connection to the host API like so:
void tvservice_init() {
VCHI_INSTANCE_T vchi_instance;
VCHI_CONNECTION_T *vchi_connections;