marcoc1712 wrote:
> The problem here is that the wav header is missing or malformed in the
> stream. Daphile was the first to adopt R2 mods in order to read the
> header from the stream, as far as I Know is identical to R2 in that
> matter, but maybe Kimmo modified the code that investigate the header
> in order to handle DXD, could you please post the squeezelite LOG from
> inside Daphile?
>
> BTW, this time the Audio device is correctly opened at 32 bit 352800 hz.
I would love too however I am not sure how to do this. I just installed
a Beta version as only there you can access via ssh. I found a
squeezelite in /etc/bin but I am not sure how to get logfile from.
Sorry :-( Could you help again.
>
> Your discussion has moved on but I'd like to conclude the offshoot I
> started.
>
> I don't know DXD but I think I understand the underlying issue.
> DXD "hide" in a WAV file format - WAV is just a convenient format to
> hold the DXD datastream which can be used to trick LMS to send the DXD
> data stream content to a DAC unchanged.
> For that to happen LMS must think the destination player can support the
> file format.
> WAV files can hold samples in different formats fixed point PCM, IEEE
> Float, 8bit a-Law, 8bit mu-Law and extensible.
> LMS players only support fixed point PC and so will have difficulty with
> any non PCM format. Different sample size and sample rate can be handled
> by LMS
>
> You provided a dump of the file headers of two DXD 325kHz DXD files. As
> I understand it one plays and the other doesn't. Summary of the header
> analysis is as follows
>
> 2 ch, 352.8kHz, 32bits/sample, audio format of sample is IEEE Float :
> What-A-Wonderful-World_DXD352KHz_2chDXD.wav
> 2 ch, 352.8kHz, 24bits/sample, audio format of sample is PCM :
> a-fool-for-you-carmen-gomes-inc-dxd352khz.wav
>
> There is a "JUNK" chunk which has some data but is different for each
> file. This could be DXD related but AFAICT the data in JUNK is not
> passed by LMS or squeezelite to DAC so is ignored.
>
> To understand why the file is unplayable you need to determine whether
> the data in the unplayable file WAV fmt header is correct and the audio
> DXD data is really in 32 bit floating point and needs to be converted or
> whether the fmt file header is wrong and just the header needs to be
> corrected.
>
> What-A-Wonderful-World_DXD352KHz_2chDXD.wav
>
Thanks a lot for all this very useful and detailed information :-)
Hoenestly I do not understand everything but a few things a now much
clearer. I also investigated my soundcards (Both DACS iNANO and DIY)
Code:
--------------------
server:~/programs$ aplay --dump-hw-params -D hw:4,0 -f cd /dev/zero
Playing raw data '/dev/zero' : Signed 16 bit Little Endian, Rate 44100 Hz,
Stereo
HW Params of device "hw:4,0":
--------------------
ACCESS: MMAP_INTERLEAVED RW_INTERLEAVED
FORMAT: S16_LE S32_LE SPECIAL DSD_U32_BE
SUBFORMAT: STD
SAMPLE_BITS: [16 32]
FRAME_BITS: [32 64]
CHANNELS: 2
RATE: [44100 768000]
PERIOD_TIME: [125 2972155)
PERIOD_SIZE: [8 131072]
PERIOD_BYTES: [64 524288]
PERIODS: [2 1024]
BUFFER_TIME: (20 5944309)
BUFFER_SIZE: [16 262144]
BUFFER_BYTES: [64 1048576]
TICK_TIME: ALL
--------------------
^CAborted by signal Interrupt...
server:~/programs$ aplay --dump-hw-params -D hw:3,0 -f cd /dev/zero
Playing raw data '/dev/zero' : Signed 16 bit Little Endian, Rate 44100 Hz,
Stereo
HW Params of device "hw:3,0":
--------------------
ACCESS: MMAP_INTERLEAVED RW_INTERLEAVED
FORMAT: S32_LE SPECIAL DSD_U32_BE
SUBFORMAT: STD
SAMPLE_BITS: 32
FRAME_BITS: 64
CHANNELS: 2
RATE: [44100 384000]
PERIOD_TIME: [125 1486078)
PERIOD_SIZE: [8 65536]
PERIOD_BYTES: [64 524288]
PERIODS: [2 1024]
BUFFER_TIME: (41 2972155)
BUFFER_SIZE: [16 131072]
BUFFER_BYTES: [128 1048576]
TICK_TIME: ALL
--------------------
aplay: set_params:1299: Sample format non available
Available formats:
- S32_LE
- SPECIAL
- DSD_U32_BE
sovaria@danteserver:~/programs$
--------------------
Thanks S
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