Call Counters (2nd)

Here a proposal for call counters implementation for keeping track of the total incoming and outgoing call duration counters. Each established call instance is contributing to either of the call duration counters. The 2 counters are updated periodically when there is an established call and the information is stored in a file. The bookkeeping of the call duration counters are per IMSI number.
The implementation makes use of the history framework which had to be expanded with a function for marking the beginning of a voice call. There is a D-Bus interface to call counters for reading and clearing the counters.

Andras Domokos (5):
history: expand history API include file
history: expand history API
voicecall: take into use the new history function
plugins: add call counters
doc: call counters API doc

 Makefile.am              |    3 +
 doc/callcounters-api.txt |   18 ++
 include/history.h        |    3 +
 plugins/callcounters.c   |  388 ++++++++++++++++++++++++++++++++++++++++++++++
 src/history.c            |   24 +++
 src/ofono.h              |    4 +
 src/voicecall.c          |    3 +
 7 files changed, 443 insertions(+), 0 deletions(-)
 create mode 100644 doc/callcounters-api.txt
 create mode 100644 plugins/callcounters.c