[mythtv] CVS and dvb audio problems

Staffan Pettersson staffan.pettersson at sverige.nu
Fri Feb 18 00:20:38 UTC 2005


Hi

I successfully got ac3 audio working in myth using ALSA:spdif output device :=)
But it produced other problems.

1, If i tune to a channel with ac3 audio and then change to a mpeg audio
channel, mythfrontend does'nt seem to reinit audio and no sound is produced.

Mythfrontend log:
2005-02-18 00:58:54.626 Broadcasting free space avail
2005-02-18 00:58:54.631 Broadcasting free space avail
2005-02-18 00:58:54.634 Broadcasting free space avail
2005-02-18 00:58:54.638 Broadcasting free space avail
2005-02-18 00:58:54.643 Broadcasting free space avail
2005-02-18 00:58:54.646 Broadcasting free space avail
2005-02-18 00:58:54.650 Broadcasting free space avail
2005-02-18 00:58:54.654 Broadcasting free space avail
2005-02-18 00:58:54.658 Broadcasting free space avail
2005-02-18 00:58:54.662 Broadcasting free space avail
2005-02-18 00:58:54.666 Broadcasting free space avail

2. If a use ALSA:spdif, i never gets sound on two channels that have very low
bitrate (Discovery channel and Animal planet)

Can it be a configuration error from my part?
I´m using a sblive with latest alsa drivers.

Here is a mythfrontend log for the 2 problem:

2005-02-18 00:25:26.442 Killing AudioOutputDSP
2005-02-18 00:25:26.443 OutputAudioLoop: Stop Event
2005-02-18 00:25:26.443 kickoffOutputAudioLoop exiting
2005-02-18 00:25:26.446 Opening audio device 'spdif'.
2005-02-18 00:25:26.448 in SetParameters(format=2, channels=1, rate=48000,
buffer_time=500000, period_time=125000)
2005-02-18 00:25:26.448 Channels count (1) not available: Invalid argument
2005-02-18 00:25:26.448 Aborting reconfigure
2005-02-18 00:25:26.448 _AddSamples bytes=2304, used=1, free=511999,
timecode=9525488
2005-02-18 00:25:26.449 _AddSamples bytes=2304, used=2305, free=509695,
timecode=9525512
2005-02-18 00:25:26.449 _AddSamples bytes=2304, used=4609, free=507391,
timecode=9525536
2005-02-18 00:25:26.449 Auto-selecting audio track #1 (stream #1).
2005-02-18 00:25:26.449 It has 1 channels and we needed at least 1
2005-02-18 00:25:26.449 Initializing audio parms from audio track #0.
2005-02-18 00:25:26.449 SetEffDsp: 4800000
2005-02-18 00:25:26.455 _AddSamples bytes=2304, used=6913, free=505087,
timecode=9525560
2005-02-18 00:25:26.827 _AddSamples bytes=2304, used=9217, free=502783,
timecode=9525584
2005-02-18 00:25:26.836 _AddSamples bytes=2304, used=11521, free=500479,
timecode=9525608
2005-02-18 00:25:26.842 _AddSamples bytes=2304, used=13825, free=498175,
timecode=9525632
2005-02-18 00:25:26.842 _AddSamples bytes=2304, used=16129, free=495871,
timecode=9525656
2005-02-18 00:25:26.848 _AddSamples bytes=2304, used=18433, free=493567,
timecode=9525680
2005-02-18 00:25:26.849 _AddSamples bytes=2304, used=20737, free=491263,
timecode=9525704
2005-02-18 00:25:26.856 _AddSamples bytes=2304, used=23041, free=488959,
timecode=9525728
2005-02-18 00:25:26.862 _AddSamples bytes=2304, used=25345, free=486655,
timecode=9525752
2005-02-18 00:25:26.862 _AddSamples bytes=2304, used=27649, free=484351,
timecode=9525776
2005-02-18 00:25:26.868 _AddSamples bytes=2304, used=29953, free=482047,
timecode=9525800
2005-02-18 00:25:26.870 _AddSamples bytes=2304, used=32257, free=479743,
timecode=9525824
2005-02-18 00:25:26.877 _AddSamples bytes=2304, used=34561, free=477439,
timecode=9525848
2005-02-18 00:25:26.883 _AddSamples bytes=2304, used=36865, free=475135,
timecode=9525872
2005-02-18 00:25:26.884 _AddSamples bytes=2304, used=39169, free=472831,
timecode=9525896
2005-02-18 00:25:26.889 _AddSamples bytes=2304, used=41473, free=470527,
timecode=9525920
2005-02-18 00:25:26.891 _AddSamples bytes=2304, used=43777, free=468223,
timecode=9525944
2005-02-18 00:25:26.898 _AddSamples bytes=2304, used=46081, free=465919,
timecode=9525968
2005-02-18 00:25:26.904 _AddSamples bytes=2304, used=48385, free=463615,
timecode=9525992
2005-02-18 00:25:26.905 _AddSamples bytes=2304, used=50689, free=461311,
timecode=9526016
2005-02-18 00:25:26.911 _AddSamples bytes=2304, used=52993, free=459007,
timecode=9526040

/Staffan
...................................................................

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