[mythtv-commits] Ticket #5900: AO: Generalise upmix and AC-3 encoding

[MythTV]

#5900: AO: Generalise upmix and AC-3 encoding
------------------------------+---------------------------------------------
 Reporter:  foobum at gmail.com  |        Owner:  ijr    
     Type:  patch             |       Status:  new    
 Priority:  minor             |    Milestone:  unknown
Component:  mythtv            |      Version:  head   
 Severity:  medium            |   Resolution:         
  Mlocked:  0                 |  
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Comment(by Markus Schulz <msc at antzsystem.de>):

 mythmusic dont work (@trunk), there was no audio output unless i disable
 the upmixer (STRG+U).
 mythvideo works fine.

 logoutput for starting playback in mythmusic with "-v audio":

 2008-11-14 13:05:08.787 AO: Creating AC-3 Encoder
 2008-11-14 13:05:08.787 DEnc: Init codecid=AC3, br=448000, sr=48000, ch=6
 re=0
 2008-11-14 13:05:08.788 DigitalEncoder::Init fs=1536, bpf=12 ofb=18432
 2008-11-14 13:05:08.788 AO: Using resampler. From: 44100 to 48000
 2008-11-14 13:05:08.788 Opening audio device 'default'. ch 2(2) sr 48000
 2008-11-14 13:05:08.788 Setting IEC958 status bits
 2008-11-14 13:05:08.789 Opening ALSA audio device 'default'.
 2008-11-14 13:05:08.789 in SetParameters(format=2, channels=2, rate=48000,
 buffer_time=400000, period_time=25000)
 2008-11-14 13:05:08.790 get_buffer_size returned 16384
 2008-11-14 13:05:08.790 set_period_time_near returned 21333
 2008-11-14 13:05:08.790 get_period_size returned 1024
 2008-11-14 13:05:08.794 Opening mixer default
 2008-11-14 13:05:08.796 Setting Master volume to 100
 2008-11-14 13:05:08.796 Volume range is 0 to 100, mult=1
 2008-11-14 13:05:08.796 channel 0 vol set to 100
 2008-11-14 13:05:08.796 Volume range is 0 to 100, mult=1
 2008-11-14 13:05:08.796 Volume range is 0 to 100, mult=1
 2008-11-14 13:05:08.796 ALSA: channel 0 playback switch set to 1
 2008-11-14 13:05:08.796 Setting Master volume to 100
 2008-11-14 13:05:08.796 mixer unable to find control Master 1
 2008-11-14 13:05:08.797 Setting PCM volume to 92
 2008-11-14 13:05:08.797 Volume range is 0 to 100, mult=1
 2008-11-14 13:05:08.798 channel 0 vol set to 92
 2008-11-14 13:05:08.798 ALSA: channel 0 playback switch set to 1
 2008-11-14 13:05:08.798 Setting PCM volume to 92
 2008-11-14 13:05:08.798 Volume range is 0 to 100, mult=1
 2008-11-14 13:05:08.798 channel 1 vol set to 92
 2008-11-14 13:05:08.798 ALSA: channel 1 playback switch set to 1
 2008-11-14 13:05:08.798 Volume range is 0 to 100, mult=1
 2008-11-14 13:05:08.798 AO: Audio fragment size: 6144
 2008-11-14 13:05:08.799 AO: create upmixer
 2008-11-14 13:05:08.801 AO: Create upmixer done with surround mode 2
 2008-11-14 13:05:08.801 AO: Audio Stretch Factor: 1
 2008-11-14 13:05:08.802 AO: Ending reconfigure
 2008-11-14 13:05:08.802 AO: kickoffOutputAudioLoop: pid = 21254
 2008-11-14 13:05:08.802 AO: OutputAudioLoop: Play Event
 2008-11-14 13:05:08.804 AO: OutputAudioLoop: Play Event


 I don't see where he sets the IEC958 status bits like in mythvideo:

 2008-11-14 13:09:02.646 AO: Creating AC-3 Encoder
 2008-11-14 13:09:02.646 DEnc: Init codecid=AC3, br=448000, sr=48000, ch=6
 re=0
 2008-11-14 13:09:02.647 DigitalEncoder::Init fs=1536, bpf=12 ofb=18432
 2008-11-14 13:09:02.647 Opening audio device 'default'. ch 2(2) sr 48000
 2008-11-14 13:09:02.647 Setting IEC958 status bits
 2008-11-14 13:09:02.648 Opening ALSA audio device 'iec958:{ AES0 0x02 }'.
 2008-11-14 13:09:02.649 in SetParameters(format=2, channels=2, rate=48000,
 buffer_time=400000, period_time=25000)

 hope this helps.

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/5900#comment:5>
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