Difference between revisions of "BCL programming tips"
| Line 1: | Line 1: | ||
== How to use LINK == | == How to use LINK == | ||
== RTP streaming == | == RTP streaming == | ||
* MP3 bit reservoir | * MP3 bit reservoir | ||
== Audio handling == | == Audio handling == | ||
* reading/writing must happen in "real time" | * reading/writing must happen in "real time" | ||
== Tips for writing efficient programs == | == Tips for writing efficient programs == | ||
* use ON var GOTO | * use ON var GOTO | ||
* do not use large if then or nested if then | * do not use large if then or nested if then | ||
== UDP reception == | == UDP reception == | ||
* lastlen trick | * lastlen trick | ||
* must proceed all UDP packets in the handler | * must proceed all UDP packets in the handler | ||
== Multicast == | == Multicast == | ||
| Line 32: | Line 42: | ||
CLOSE 1 | CLOSE 1 | ||
</pre> | </pre> | ||
== UDP source/destination ports == | == UDP source/destination ports == | ||
* source port is the same as the port in the open statement | * source port is the same as the port in the open statement | ||
Revision as of 09:13, 18 December 2008
How to use LINK
RTP streaming
- MP3 bit reservoir
Audio handling
- reading/writing must happen in "real time"
Tips for writing efficient programs
- use ON var GOTO
- do not use large if then or nested if then
UDP reception
- lastlen trick
- must proceed all UDP packets in the handler
Multicast
BCL supports up to 16 IP multicast groups at a time. The subscription, periodic membership reporting as well as group leaving is performed automatically by the firmware and does not have to be handled by the BCL application. IGMP version 1 and 2 is supported.
Subscribing to a group
To subscribe to a multicast group enter the desired multicast address to the UDP open statement.
Example:
OPEN "UDP:224.10.1.3:5000" as 1
Leaving the group
The group is automatically left if the respective handle is closed:
CLOSE 1
UDP source/destination ports
- source port is the same as the port in the open statement
