forked from hiroshiyui/kaffeine
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NOTES
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/
NOTES
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===============
About this file
===============
This file covers various topics relevant to Kaffeine development.
---------
dtvdaemon
---------
dtvdaemon is intended as a small, standalone daemon to communicate with the digital TV devices
(supported by linuxtv.org or other projects). It provides a convenience layer (channels, epg, etc)
and should only depend on QtCore and QtNetwork. Currently the focus lies on a local daemon, which
runs only on demand, but it should be easy to make it accessible through TCP/IP.
One advantage is the possibility to run multiple instances of Kaffeine at the same time. While
implementing it, enhancements (e.g. support for new delivery systems) are also tried to achieve.
------------------------
DVB-T channel allocation
------------------------
Geneva 2006 Agreement (GE06) - http://www.itu.int/ITU-R/terrestrial/broadcast/plans/ge06/index.html
- VHF: channels 5 - 12 ; center frequency = 142.5 + 7 * channel number MHz ; bandwidth = 7 MHz
- UHF: channels 21 - 69 ; center frequency = 306 + 8 * channel number MHz ; bandwidth = 8 MHz
Australia: 177.5 - 226.5 and 529.5 (?) - 816.5 (?) MHz ; bandwidth = 7 MHz
Italy VHF band: 177.5, 186, 194.5, 203.5, 212.5, 219.5 and 226.5 MHz ; bandwidth = 7 or 8 (?) MHz
-----------------
SQL table formats
-----------------
- table "Channels"
- column "Id"
- INTEGER PRIMARY KEY
- column "Name"
- string; not empty
- column "Number"
- int; Number >= 1
- column "Source"
- string; not empty
- column "Transponder"
- string; linuxtv format
- column "NetworkId"
- int; -1 <= NetworkId <= 0xffff; from SDT
- column "TransportStreamId"
- int; 0 <= TransportStreamId <= 0xffff; from PAT
- column "PmtPid"
- int; 0 <= PmtPid <= 0x1fff; from PAT
- column "PmtSection"
- byte array; not empty; from PMT
- column "AudioPid"
- int; -1 <= AudioPid <= 0x1fff; from PMT
- column "Flags"
- int; (1 << 0) = has video (from PMT), (1 << 1) = is scrambled (from SDT or VCT)
- table "RecordingSchedule"
- column "Id"
- INTEGER PRIMARY KEY
- column "Name"
- string; not empty
- column "Channel"
- string; not empty
- column "Begin"
- string; ISO 8601 encoded date and time; UTC (ends with 'Z') or local time (older versions)
- column "Duration"
- string; ISO 8601 encoded time
- column "Repeat"
- int; (1 << 0) = on Mondays ... (1 << 6) = on Sundays