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96 lines
3.7 KiB
Plaintext
96 lines
3.7 KiB
Plaintext
This is a DVB Frontend Status Monitor plugin for the Video Disk Recorder (VDR).
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Written by: R o l f . A h r e n b e r g @ s c i . f i
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Project's homepage: http://www.saunalahti.fi/~rahrenbe/vdr/femon/
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Latest version available at: http://www.saunalahti.fi/~rahrenbe/vdr/femon/
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See the file COPYING for license information.
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Requirements:
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VDR & DVB. BMW & Ph.D.. BEER. YARRR!
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Description:
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DVB Frontend Status Monitor is a plugin that displays some signal information
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parameters of the current tuned channel on OSD. You can zap through all your
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channels and the plugin should be monitoring always the right frontend. The
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transponder and stream information are also available in advanced display modes.
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The plugin is based on a neat console frontend status monitor application
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called 'femon' by Johannes Stezenbach (see DVB-apps/szap/femon.c for further
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information). The other parts of plugin code are borrowed from the excellent
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'OSD Picture-In-Picture' plugin by Sascha Volkenandt and Andreas Regel. The
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bitrate calculation algorithm originates from the 'dvbstream' application by
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Dave Chapman and the stream information routines from the 'libdvb' library by
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Metzler Brothers.
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Terminology:
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--------------------------------------------------------------
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|## Channel Name ######################### [DD][AR][VF][A][D]|
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|[=====Signal Strength in % ==============|=================]|
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|[=====Signal-to-Noise Ratio in % ========|=================]|
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| STR: #0000 (0%) BER: #00000000 Video: 0 Mbit/s |
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| SNR: #0000 (0%) UNC: #00000000 Audio: 0 kbit/s |
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| [LOCK] [SIGNAL] [CARRIER] [VITERBI] [SYNC] |
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--------------------------------------------------------------
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STR - Signal strength
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SNR - Signal-to-noise ratio
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BER - Bit error rate
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UNC - Uncorrected blocks
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Video - Calculated video bitrate in Mbit/s
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Audio - Calculated audio / AC-3 bitrate in kbit/s
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LOCK - Everything's working...
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SIGNAL - Found something above the noise level
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CARRIER - Found a DVB signal
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VITERBI - FEC (forward error correction) is stable
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SYNC - Found sync bytes
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DD - AC-3 stream (optional)
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AR - Aspect Ratio: 1:1/4:3/16:9/2.21:1 (optional)
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VF - Video format: PAL/NTSC (optional)
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A - Audio track: 1..2 (optional)
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D - Device number: 0..3 (optional)
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Controls:
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ChanUp/ChanDn - Switch channel up/down
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Up/Down - Switch channel up/down
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0-9 - Select channel
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Ok - Switch between display modes: basic, transponder, stream, AC-3
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Right/Left - Switch to next/previous device that provides the current channel
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Green - Select language (APID)
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Back - Exit plugin
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Installation:
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cd /put/your/path/here/VDR/PLUGINS/src
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tar -xzf /put/your/path/here/vdr-femon-X.Y.Z.tgz
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ln -s femon-X.Y.Z femon
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cd /put/your/path/here/VDR
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make
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make plugins
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./vdr -P femon
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Notes:
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- The plugin supports only those DVB cards with _one_ frontend (do any cards
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with multiple frontends even exist?), because I haven't yet figured howto do
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it without patching the VDR core.
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- Sometimes (read always) ttxtsubs plugin messes up the OSD - user should disable
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ttxtsubs, but closing and reopening the femon plugin might help temporarily as
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well. Btw., this same thing happens with OSDTeletext plugin too :)
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- Disable the stream analyze to speed up heavy zapping sessions.
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- The signal strength and signal-to-noise ratio values are comparable only
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between the same brand/model frontends. Due to the lack of proper frontend
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specifications those values cannot be calculated into any real units.
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- Shrinked OSD is available for NTSC users: make NTSC_SYSTEM=1
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- The device switching feature is still non-functional.
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"Femon - A real womon who lives according to her natural feminine inclinations."
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