[SOLVED] hdmi sound with xine

epilitimus · 05-04-2015, 11:00 PM

Slackware 14.1 64bit
alsa-lib-1.0.27.2
kde4
xine 0.99.7

http://alsa.opensrc.org/DigitalOut

aplay -L:

Code:

null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=Generic_1
    HD-Audio Generic, ALC282 Analog
    Default Audio Device
sysdefault:CARD=Generic_1
    HD-Audio Generic, ALC282 Analog
    Default Audio Device
front:CARD=Generic_1,DEV=0
    HD-Audio Generic, ALC282 Analog
    Front speakers
surround40:CARD=Generic_1,DEV=0
    HD-Audio Generic, ALC282 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Generic_1,DEV=0
    HD-Audio Generic, ALC282 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Generic_1,DEV=0
    HD-Audio Generic, ALC282 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Generic_1,DEV=0
    HD-Audio Generic, ALC282 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Generic_1,DEV=0
    HD-Audio Generic, ALC282 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=Generic,DEV=0
    HD-Audio Generic, HDMI 0
    HDMI Audio Output

aplay -l:

Code:

**** List of PLAYBACK Hardware Devices ****
card 0: Generic_1 [HD-Audio Generic], device 0: ALC282 Analog [ALC282 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Sound from all sources, including xine, works fine for normal use. My problem is when I try to send the sound to my HDMI output from xine. I am able to send sound to the HDMI output with no problems from aplay, phonon, mplayer.

When using xine I set audio.output.speaker_arrangement=Pass through and audio.driver=auto (I am actually using the gui). With those set I also set audio.device.alsa_passthrough_device=hw:1,3 or audio.device.alsa_passthrough_device=hdmi:CARD=Generic,DEV=0. But the only sound I get sounds like a flock of neurotic woodpeckers. I tried the iecset command from the alsa.opensrc.org page listed above. With iecset audio 1 I get no sound and the TV complains about a bad sound signal. Either the hw or hdmi device can be used without difficulty with for example aplay.

Obviously I am missing something. Any suggestions?

epilitimus · 05-05-2015, 12:31 AM

some additional information:
If I use -ac hwac3 with mplayer I get the same neurotic woodpecker effect. Leaving that out mplayer works fine and shows that it is using ffmpeg to do the decoding and ffmpeg reports the audio to be ac3.

Code:

==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
[ac3 @ 0xe99d40]frame sync error
AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00 (ratio: 48000->192000)
Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3)
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
A: 552.1 V: 552.4 A-V: -0.338 ct: -0.077 206/203 13%  0%  2.2% 0 0 

demux_mpg: 24000/1001fps progressive NTSC content detected, switching framerate.
A: 556.4 V: 556.4 A-V: -0.001 ct: -0.373 303/299 15%  0%  1.9% 0 0 
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
[ac3 @ 0xe99d40]frame sync error
AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3)
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)

epilitimus · 05-05-2015, 10:58 PM

solved: how xine handles audio changes depending on the speaker arrangement selected. It doesn't just select an output as I was assuming. Using the same speaker arrangement as I normally use and setting that output device to the hdmi output works.

for future reference:

Code:

audio.device.alsa_front_device:hw:1,3
audio.output.speaker_arrangement:Stereo 2.0