Re: how to enable optical output on VIA VT1708S?

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On Sun, Jan 10, 2010 at 12:23 AM, Floris <jkfloris@xxxxxx> wrote:
>> Now the help required at this point: mplayer
>>
>> mplayer -ao alsa:spdif with this dts sample file gives no sound in F11
>> while it "almost" works in F12.
>
>
>
> try mplayer -ao alsa:device=spdif -afm hwac3 <file>
> because otherwise mplayer will decode the dts file for you
> and not your receiver.
>

Hey, it works!
Thank you very much Floris

I see that at least it works on two mkv files I have, where I get the
lock led on and the mode remains to "digital"
(and clearly the sounds come different from the different speakers, so
it is all ok).

Now with your suggestion In file 1 that works, mplayer says
[mkv] Track ID 2: audio (A_DTS) "Audio - Italiano DTS", -aid 0, -alang ita

Trying to force audio codec driver family hwac3...
Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
No accelerated IMDCT transform found
hwac3: switched to DTS, 768000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, ac3, 768.0 kbit/50.00% (ratio: 96000->192000)
Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
==========================================================================
AO: [alsa] 48000Hz 2ch ac3 (1 bytes per sample)

In file 2 that works, mplayer says the same; only difference is
[mkv] Track ID 2: audio (A_DTS) "Italiano 5.1", -aid 0, -alang ita

The important part is A_DTS, so it is that which defines the kind of
audio track, correct?
I will try also with a DTS DVD I have somewhere ...

So my problem seems solved (at least up to next update... ;-)

Only strange thing is that if I play with the same switch the demo
file I used to test at the beginning with aplay, I don't hear any
sound and the lock led remains switched off.
So it seems nothing goes through optical link now....
Any clues to this? Below is the output of mplayer with "-v" switch

[gcecchi@tekkaman dts_tests]$ mplayer -v -vo null -ao
alsa:device=spdif -afm hwac3 dts_the_other_side_44khz.wav
MPlayer SVN-r29800-4.4.2 (C) 2000-2009 MPlayer Team
CPU vendor name: AuthenticAMD  max cpuid level: 5
CPU: AMD Athlon(tm) II X4 630 Processor (Family: 16, Model: 5, Stepping: 2)
extended cpuid-level: 27
extended cache-info: 33587520
Detected cache-line size is 64 bytes
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNowExt: 1 SSE: 1 SSE2: 1 SSSE3: 0
Compiled with runtime CPU detection.
get_path('codecs.conf') -> '/home/gcecchi/.mplayer/codecs.conf'
Reading /home/gcecchi/.mplayer/codecs.conf: Can't open
'/home/gcecchi/.mplayer/codecs.conf': No such file or directory
Reading /etc/mplayer/codecs.conf: Can't open
'/etc/mplayer/codecs.conf': No such file or directory
Using built-in default codecs.conf.
Configuration: --prefix=/usr --bindir=/usr/bin
--datadir=/usr/share/mplayer --mandir=/usr/share/man
--confdir=/etc/mplayer --libdir=/usr/lib64
--codecsdir=/usr/lib64/codecs --extra-cflags=-O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
--param=ssp-buffer-size=4 -m64 -mtune=generic --language=all
--enable-joystick --enable-largefiles --enable-lirc --enable-menu
--enable-runtime-cpudetection --enable-unrarexec
--disable-dvdread-internal --disable-libdvdcss-internal
--disable-nemesi --disable-smb --disable-faac-lavc
--disable-mp3lame-lavc --disable-x264-lavc --disable-liba52-internal
--disable-faad-internal --disable-mad --disable-tremor-internal
--disable-bitmap-font --disable-directfb
--with-fribidi-config=pkg-config fribidi --disable-svga
--disable-termcap --enable-xvmc --with-xvmclib=XvMCW --disable-arts
--disable-esd --disable-jack --disable-openal
CommandLine: '-v' '-vo' 'null' '-ao' 'alsa:device=spdif' '-afm'
'hwac3' 'dts_the_other_side_44khz.wav'
init_freetype
Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
get_path('fonts') -> '/home/gcecchi/.mplayer/fonts'
Using nanosleep() timing
get_path('input.conf') -> '/home/gcecchi/.mplayer/input.conf'
Can't open input config file /home/gcecchi/.mplayer/input.conf: No
such file or directory
Parsing input config file /etc/mplayer/input.conf
Input config file /etc/mplayer/input.conf parsed: 90 binds
Setting up LIRC support...
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
get_path('dts_the_other_side_44khz.wav.conf') ->
'/home/gcecchi/.mplayer/dts_the_other_side_44khz.wav.conf'

Playing dts_the_other_side_44khz.wav.
get_path('sub/') -> '/home/gcecchi/.mplayer/sub/'
[file] File size is 27582508 bytes
STREAM: [file] dts_the_other_side_44khz.wav
STREAM: Description: File
STREAM: Author: Albeu
STREAM: Comment: based on the code from ??? (probably Arpi)
LAVF_check: WAV format
Checking for YUV4MPEG2
ASF_check: not ASF guid!
Checking for REAL
Checking for SMJPEG
Searching demuxer type for filename dts_the_other_side_44khz.wav ext: .wav
Trying demuxer 17 based on filename extension
==> Found audio stream: 0
======= WAVE Format =======
Format Tag: 1 (0x1)
Channels: 2
Samplerate: 44100
avg byte/sec: 176400
Block align: 4
bits/sample: 16
cbSize: 0
==========================================================================
[demux_audio] DTS audio in wav, 14 bit, LE
demux_audio: audio data 0x2C - 0x1A4E02C
Audio only file format detected.
get_path('sub/') -> '/home/gcecchi/.mplayer/sub/'
==========================================================================
Trying to force audio codec driver family hwac3...
Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
dec_audio: Allocating 8192 bytes for input buffer.
dec_audio: Allocating 16384 + 65536 = 81920 bytes for output buffer.
No accelerated IMDCT transform found
hwac3: switched to DTS, 1411200 bps, 44100 Hz
AUDIO: 44100 Hz, 2 ch, ac3, 1411.2 kbit/100.00% (ratio: 176400->176400)
Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
==========================================================================
Building audio filter chain for 44100Hz/2ch/ac3 -> 0Hz/0ch/??...
[libaf] Adding filter dummy
[dummy] Was reinitialized: 44100Hz/2ch/ac3
[dummy] Was reinitialized: 44100Hz/2ch/ac3
Trying preferred audio driver 'alsa', options 'device=spdif'
alsa-init: requested format: 44100 Hz, 2 channels, 100
alsa-init: using ALSA 1.0.22
alsa-spdif-init: playing AC3, 2 channels
alsa-init: using device spdif
alsa-init: pcm opened in blocking mode
alsa-init: got buffersize=88192
alsa-init: got period size 1696
alsa: 44100 Hz/2 channels/4 bpf/88192 bytes buffer/Signed 16 bit Little Endian
AO: [alsa] 44100Hz 2ch ac3 (1 bytes per sample)
AO: Description: ALSA-0.9.x-1.x audio output
AO: Author: Alex Beregszaszi, Zsolt Barat <joy@xxxxxxxxxxxxxxxxx>
AO: Comment: under developement
Building audio filter chain for 44100Hz/2ch/ac3 -> 44100Hz/2ch/ac3...
[dummy] Was reinitialized: 44100Hz/2ch/ac3
[dummy] Was reinitialized: 44100Hz/2ch/ac3
Video: no video
Freeing 0 unused video chunks.
Starting playback...
Increasing filtered audio buffer size from 0 to 65536
A: 0.4 (10.4) of 156.0 (02:36.0)  0.2%


Gianluca

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