DSD in LMS con SOX

[SimoneFil]

Da me sembra convertire ma non va in play

Log server:

[17-02-05 21:54:15.2584] Slim::Player::TranscodingHelper::checkBin (252)   Found command: [sox] -q  -t flac - -t dsf  -b 1 - rate -v 2822400
[17-02-05 21:54:15.2585] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: flc->dsf via: [sox] -q  -t flac - -t dsf  -b 1 - rate -v 2822400
[17-02-05 21:54:16.0494] Slim::Player::StreamingController::_eventAction (271) b8:27:eb:3f:43:12: StatusHeartbeat in STOPPED-IDLE -> Slim::Player::StreamingController::_NoOp
[17-02-05 21:54:20.0543] Slim::Player::StreamingController::_eventAction (271) b8:27:eb:3f:43:12: StatusHeartbeat in STOPPED-IDLE -> Slim::Player::StreamingController::_NoOp
[17-02-05 21:54:24.0501] Slim::Player::StreamingController::_eventAction (271) b8:27:eb:3f:43:12: StatusHeartbeat in STOPPED-IDLE -> Slim::Player::StreamingController::_NoOp

...

Log squeezelite

[21:54:14.108952] codec_open:255 codec open: 'd'
[21:54:14.108978] codec_open:272 closing codec: 'p'
[21:54:14.109028] stream_sock:393 connecting to xxx.xxx.xxx.xxx:pppp
[21:54:14.160662] stream_sock:422 header: GET /stream.mp3?player=b8:27:eb:3f:43:12 HTTP/1.0


[21:54:14.160728] sendSTAT:184 STAT: STMc
[21:54:14.160765] process_strm:377 set fade mode: 0
[21:54:14.160807] process:521 audg
[21:54:14.160831] process_audg:433 audg gainL: 3840 gainR: 3840 adjust: 1
[21:54:14.160856] set_volume:229 setting internal gain left: 3840 right: 3840
[21:54:14.282501] process:521 strm
[21:54:14.282565] process_strm:269 strm command q
[21:54:14.282591] decode_flush:227 decode flush
[21:54:14.282612] output_flush:424 flush output buffer
[21:54:14.282684] sendSTAT:184 STAT: STMf
[21:54:16.033216] process:521 strm
[21:54:16.033290] process_strm:269 strm command t
[21:54:16.033315] sendSTAT:184 STAT: STMt
[21:54:20.037624] process:521 strm
[21:54:20.037709] process_strm:269 strm command t
[21:54:20.037739] sendSTAT:184 STAT: STMt
[21:54:24.032787] process:521 strm
[21:54:24.032885] process_strm:269 strm command t
[21:54:24.032913] sendSTAT:184 STAT: STMt
[21:54:28.035631] process:521 strm
[21:54:28.035692] process_strm:269 strm command t
[21:54:28.035718] sendSTAT:184 STAT: STMt
[21:54:32.279169] process:521 strm
[21:54:32.279235] process_strm:269 strm command t
[21:54:32.279262] sendSTAT:184 STAT: STMt
[21:54:36.541018] process:521 strm
[21:54:36.541077] process_strm:269 strm command t
[21:54:36.541102] sendSTAT:184 STAT: STMt
[21:54:40.039643] process:521 strm
[21:54:40.039702] process_strm:269 strm command t
[21:54:40.039729] sendSTAT:184 STAT: STMt
[21:54:44.033853] process:521 strm
[21:54:44.033935] process_strm:269 strm command t
[21:54:44.033963] sendSTAT:184 STAT: STMt
[21:54:48.036153] process:521 strm
[21:54:48.036231] process_strm:269 strm command t
[21:54:48.036259] sendSTAT:184 STAT: STMt

[marcoc1712]

sto provando varie combinazioni... finalmente sembra che ci sia qualche progresso: se non altro ora va in play, con il comando giusto, ed il progress counter avanza... ma mi sa che c'è qualche problema di comunicazione con squeezelite (problema analogo a quello dell'upsampling?), perché setta la scheda audio a cavolo, e non suona

II sintomi sono queelli già visti in altre occasioni, ma non riesco a ricordare quali, tu a cosa ti riferisci in particolare con "problema analogo a quello dell'upsampling?" all'upsampling di WAV sul server?

Se è così no, squeezelite riceve correttamente l'header:

[21:42:14.556289] _read_header:158 DSF version: 1 format: 0
[21:42:14.556326] _read_header:168 channels: 2
[21:42:14.556334] _read_header:169 sample rate: 5644800

quanto viene dopo mi ocnvince meno:

[21:42:14.556340] _read_header:170 lsb first: 1
[21:42:14.556347] _read_header:171 sample bytes: 0
[21:42:14.556353] _read_header:172 block size: 4096
[21:42:14.556359] _read_header:178 found dsd len: 12

ma soprattutto l'errore è evidentemente qui (log di Filippo):

[17-02-05 20:53:30.2220] Slim::Player::Pipeline::sysread (282) Pipeline doesn't have pending bytes - trying to get some from source
[17-02-05 20:53:30.2223] Slim::Player::Pipeline::sysread (304) Attempting to write to pipeline writer
[17-02-05 20:53:30.2226] Slim::Player::Pipeline::sysread (310) Wrote 32768 bytes to pipeline writer
[17-02-05 20:53:30.2227] Slim::Player::Pipeline::sysread (282) Pipeline doesn't have pending bytes - trying to get some from source
[17-02-05 20:53:30.2229] Slim::Player::Pipeline::sysread (304) Attempting to write to pipeline writer
[17-02-05 20:53:30.2231] Slim::Player::Pipeline::sysread (310) Wrote 32768 bytes to pipeline writer
[17-02-05 20:53:30.2233] Slim::Player::Pipeline::sysread (282) Pipeline doesn't have pending bytes - trying to get some from source
[17-02-05 20:53:30.2235] Slim::Player::Pipeline::sysread (304) Attempting to write to pipeline writer
[17-02-05 20:53:30.2255] Slim::Player::Source::_wakeupOnReadable (409) 00:1c:c0:37:22:73
[17-02-05 20:53:30.2260] Slim::Player::Pipeline::sysread (304) Attempting to write to pipeline writer
[17-02-05 20:53:30.2262] Slim::Player::Source::_readNextChunk (346) readlen undef: (Broken pipe) 32
[17-02-05 20:53:30.2264] Slim::Player::Source::_readNextChunk (373) end of file or error on socket, song pos: 0
[17-02-05 20:53:30.2266] Slim::Player::Source::_readNextChunk (378) 00:1c:c0:37:22:73 mark end of stream
[17-02-05 20:53:30.2268] Slim::Player::Source::_readNextChunk (386) Didn't stream any bytes for this song; mark it as failed

Altro aspetto che non mi torna:

[21:42:14.556372] dsd_decode:538 DOP output

Il tuo DAC accetta dsd nativo o solo dop?


EDIT:

Squeezelite è compilato per DSD?
è lanciato con l'opzione -D? Se si, toglietela, -D è DOP capable, si chiede a Squeezelite di uscire in DOP, non so se è quello, ma meglio toglierlo.

[marcoc1712]

Ho verificato ed in Daphile ci sono diverse patch per il DSD, sia a LMS che a Squeezelite e persino una per SOX, bisognerebbe indagarle ed eventualmente applicarle, sinceramente pensavo fosse più semplice.

@Paolo, se vuoi provare SOX con una pipe (fuori da LMS), prova a vedere di applicare questa patch: http://www.daphile.com/gpl-src/00-Da...ata_size.patch

In particolare mi stupisce squeezelite, possibile che nessuno usi la versione standard per il DSD?

Non ricordo, ma mandando dsd nativo con LMS a squeezelite funziona?

[UnixMan]

II sintomi sono queelli già visti in altre occasioni, ma non riesco a ricordare quali, tu a cosa ti riferisci in particolare con "problema analogo a quello dell'upsampling?" all'upsampling di WAV sul server?

sì, mi riferivo a quello.

Se è così no, squeezelite riceve correttamente l'header:
[...]
ma soprattutto l'errore è evidentemente qui (log di Filippo):

[17-02-05 20:53:30.2233] Slim::Player::Pipeline::sysread (282) Pipeline doesn't have pending bytes - trying to get some from source
[17-02-05 20:53:30.2235] Slim::Player::Pipeline::sysread (304) Attempting to write to pipeline writer
[17-02-05 20:53:30.2255] Slim::Player::Source::_wakeupOnReadable (409) 00:1c:c0:37:22:73
[17-02-05 20:53:30.2260] Slim::Player::Pipeline::sysread (304) Attempting to write to pipeline writer
[17-02-05 20:53:30.2262] Slim::Player::Source::_readNextChunk (346) readlen undef: (Broken pipe) 32
[17-02-05 20:53:30.2264] Slim::Player::Source::_readNextChunk (373) end of file or error on socket, song pos: 0
[17-02-05 20:53:30.2266] Slim::Player::Source::_readNextChunk (378) 00:1c:c0:37:22:73 mark end of stream
[17-02-05 20:53:30.2268] Slim::Player::Source::_readNextChunk (386) Didn't stream any bytes for this song; mark it as failed

esatto. Ad occhio e croce, sox non processa un bel nulla, per cui non ci sono dati da inviare...

Altro aspetto che non mi torna:

[21:42:14.556372] dsd_decode:538 DOP output

Il tuo DAC accetta dsd nativo o solo dop?

entrambi.

Squeezelite è compilato per DSD?
è lanciato con l'opzione -D? Se si, toglietela, -D è DOP capable, si chiede a Squeezelite di uscire in DOP, non so se è quello, ma meglio toglierlo.

sì e sì. Fatto (tolto -D).

Ho verificato ed in Daphile ci sono diverse patch per il DSD, sia a LMS che a Squeezelite e persino una per SOX, bisognerebbe indagarle ed eventualmente applicarle, sinceramente pensavo fosse più semplice.

è quel che temevo. Quella per sox bisognerebbe mandarla a Mans, così magari può integrarla direttamente lui.

@Paolo, se vuoi provare SOX con una pipe (fuori da LMS), prova a vedere di applicare questa patch: http://www.daphile.com/gpl-src/00-Da...ata_size.patch

Tnx. Ci provo e vi faccio sapere...

In particolare mi stupisce squeezelite, possibile che nessuno usi la versione standard per il DSD?

hai la patch? cosa hanno modificato?

Non ricordo, ma mandando dsd nativo con LMS a squeezelite funziona?

sì. Posso confermare che funziona, sia in DoP che nativo.

Tolto il "-D" (che pensavo fosse necessario per il DSD), questo è quanto succede mandando in play un file dsf (per altro prodotto proprio con sox):

[17-02-06 00:36:33.7534] Slim::Player::StreamingController::stop (2097) 00:1c:c0:37:22:73
[17-02-06 00:36:33.7537] Slim::Player::StreamingController::resetSongqueue (1776) Song queue is now 
[17-02-06 00:36:33.7555] Slim::Player::StreamingController::play (2100) 00:1c:c0:37:22:73
[17-02-06 00:36:33.7564] Slim::Player::StreamingController::_setPlayingState (2357) new playing state STOPPED
[17-02-06 00:36:33.7566] Slim::Player::StreamingController::_setStreamingState (2366) new streaming state IDLE
[17-02-06 00:36:33.7571] Slim::Player::Song::new (108) index 0 -> tmp:///home/data/audio/DSD/test.dsf
[17-02-06 00:36:33.7574] Slim::Player::StreamingController::_setStreamingState (2366) new streaming state TRACKWAIT
[17-02-06 00:36:33.7649] Slim::Player::StreamingController::_playersMessage (789) Getting stream info...: tmp:///home/data/audio/DSD/test.dsf
[17-02-06 00:36:33.7655] Slim::Player::Song::getNextSong (229) tmp:///home/data/audio/DSD/test.dsf
[17-02-06 00:36:33.7658] Slim::Player::StreamingController::_nextTrackReady (737) 00:1c:c0:37:22:73: nextTrack will be index 0
[17-02-06 00:36:33.7661] Slim::Player::StreamingController::_Stream (1203) Song queue is now 0
[17-02-06 00:36:33.7663] Slim::Player::StreamingController::_Stream (1206) 00:1c:c0:37:22:73: preparing to stream song index 0
[17-02-06 00:36:33.7665] Slim::Player::Song::open (363) tmp:///home/data/audio/DSD/test.dsf
[17-02-06 00:36:33.7674] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: dsf->dsf via: -
[17-02-06 00:36:33.7677] Slim::Player::Song::open (387) seek=false time=0 canSeek=1
[17-02-06 00:36:33.7683] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: dsf->dsf via: -
[17-02-06 00:36:33.7685] Slim::Player::Song::open (408) Transcoder: streamMode=I, streamformat=dsf
[17-02-06 00:36:33.7689] Slim::Player::Song::open (461) Opening stream (no direct streaming) using Slim::Player::Protocols::Volatile [tmp:///home/data/audio/DSD/test.dsf]
[17-02-06 00:36:33.7692] Slim::Player::Protocols::File::open (81) duration: [264.626] size: [373448796] endian [] offset: [0] for tmp:///home/data/audio/DSD/test.dsf
[17-02-06 00:36:33.7694] Slim::Player::Protocols::File::open (98) Opening file /home/data/audio/DSD/test.dsf
[17-02-06 00:36:33.7698] Slim::Player::Protocols::File::open (192) Seeking in 0 into /home/data/audio/DSD/test.dsf
[17-02-06 00:36:33.7701] Slim::Player::Song::open (482) URL is a song (audio): tmp:///home/data/audio/DSD/test.dsf, type=dsf
[17-02-06 00:36:33.7713] Slim::Player::StreamingController::_Stream (1265) 00:1c:c0:37:22:73: stream
[17-02-06 00:36:33.7762] Slim::Player::StreamingController::_Stream (1302) Song queue is now 0
[17-02-06 00:36:33.7765] Slim::Player::StreamingController::_setPlayingState (2357) new playing state BUFFERING
[17-02-06 00:36:33.7767] Slim::Player::StreamingController::_setStreamingState (2366) new streaming state STREAMING
[17-02-06 00:36:33.8319] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: dsf->dsf via: -
[17-02-06 00:36:33.9013] Slim::Player::Player::_buffering (1140) Buffering... 0 / 20480
[17-02-06 00:36:34.2061] Slim::Player::Player::_buffering (1140) Buffering... 851756 / 20480
[17-02-06 00:36:34.3810] Slim::Player::StreamingController::playerTrackStarted (2180) 00:1c:c0:37:22:73
[17-02-06 00:36:34.3812] Slim::Player::StreamingController::_setPlayingState (2357) new playing state PLAYING
[17-02-06 00:36:34.3814] Slim::Player::StreamingController::_Playing (361) Song 0 has now started playing
[17-02-06 00:36:34.3821] Slim::Player::StreamingController::_Playing (390) Song queue is now 0

*** /tmp/squeezelite.log ***
[00:36:33.755869] decode_flush:190 decode flush
[00:36:33.755914] output_flush:423 flush output buffer
[00:36:33.775897] codec_open:218 codec open: 'd'
[00:36:33.775987] stream_sock:384 connecting to 127.0.0.1:9000
[00:36:33.776055] stream_sock:413 header: GET /stream.mp3?player=00:1c:c0:37:22:73 HTTP/1.0


[00:36:33.865041] stream_thread:176 headers: len: 115
HTTP/1.1 200 OK
Server: Logitech Media Server (7.9.0 - 1468928517)
Connection: close
Content-Type: audio/dsf


[00:36:33.926466] output_thread:638 open output device: hw:CARD=D20
[00:36:33.926956] alsa_open:355 opening device at: 44100
[00:36:33.927202] alsa_open:406 opened device hw:CARD=D20 using format: S32_LE sample rate: 44100 mmap: 1
[00:36:33.927240] alsa_open:485 buffer: 499 period: 3 -> buffer size: 22005 period size: 7335
[00:36:34.061277] _read_header:158 DSF version: 1 format: 0
[00:36:34.061440] _read_header:168 channels: 2
[00:36:34.061448] _read_header:169 sample rate: 5644800
[00:36:34.061455] _read_header:170 lsb first: 1
[00:36:34.061462] _read_header:171 sample bytes: 186720576
[00:36:34.061468] _read_header:172 block size: 4096
[00:36:34.061475] _read_header:178 found dsd len: 373448716
[00:36:34.061482] dsd_decode:527 setting track_start
[00:36:34.061489] dsd_decode:543 DSD to PCM output
[00:36:34.231506] _output_frames:61 start buffer frames: 3526656
[00:36:34.231572] _output_frames:146 track start sample rate: 705600 replay_gain: 0
[00:36:34.241591] output_thread:638 open output device: hw:CARD=D20
[00:36:34.257120] alsa_open:355 opening device at: 705600
[00:36:34.257366] alsa_open:406 opened device hw:CARD=D20 using format: S32_LE sample rate: 705600 mmap: 1
[00:36:34.257395] alsa_open:485 buffer: 499 period: 3 -> buffer size: 131070 period size: 43690

*** /var/log/squeezeboxserver//server.log ***
[17-02-06 00:36:35.0061] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: dsf->dsf via: -

...mentre questo è ciò che succede tentando la conversione al volo:

[17-02-06 00:41:34.8863] Slim::Player::StreamingController::_setPlayingState (2357) new playing state BUFFERING
[17-02-06 00:41:34.8864] Slim::Player::StreamingController::_setStreamingState (2366) new streaming state STREAMING
[17-02-06 00:41:34.9241] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: flc->dsf via: [sox] -q  -t flac $FILE$ -t dsf  -b 1 - rate -vMn 5644800 sdm -f  sdm-8
[17-02-06 00:41:34.9251] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: flc->dsf via: [sox] -q  -t flac $FILE$ -t dsf  -b 1 - rate -vMn 5644800 sdm -f  sdm-8
[17-02-06 00:41:35.1638] Slim::Player::StreamingController::playerReadyToStream (2198) 00:1c:c0:37:22:73

*** /tmp/squeezelite.log ***
[00:41:34.667800] decode_flush:190 decode flush
[00:41:34.667851] output_flush:423 flush output buffer
[00:41:34.885644] codec_open:218 codec open: 'd'
[00:41:34.885715] stream_sock:384 connecting to 127.0.0.1:9000
[00:41:34.885778] stream_sock:413 header: GET /stream.mp3?player=00:1c:c0:37:22:73 HTTP/1.0


[00:41:34.945701] stream_thread:176 headers: len: 115
HTTP/1.1 200 OK
Server: Logitech Media Server (7.9.0 - 1468928517)
Connection: close
Content-Type: audio/dsf


[00:41:35.163197] _read_header:158 DSF version: 1 format: 0
[00:41:35.163256] _read_header:168 channels: 2
[00:41:35.163264] _read_header:169 sample rate: 5644800
[00:41:35.163271] _read_header:170 lsb first: 1
[00:41:35.163277] _read_header:171 sample bytes: 0
[00:41:35.163283] _read_header:172 block size: 4096
[00:41:35.163290] _read_header:178 found dsd len: 12
[00:41:35.163297] dsd_decode:527 setting track_start
[00:41:35.163317] dsd_decode:543 DSD to PCM output
[00:41:35.163324] _decode_dsf:258 frames got to zero
[00:41:35.163331] decode_thread:99 decode complete
[00:41:35.164441] output_thread:638 open output device: hw:CARD=D20
[00:41:35.164492] alsa_open:355 opening device at: 705600
[00:41:35.164707] alsa_open:406 opened device hw:CARD=D20 using format: S32_LE sample rate: 705600 mmap: 1
[00:41:35.164736] alsa_open:485 buffer: 499 period: 3 -> buffer size: 131070 period size: 43690

la cosa interessante è che nel frattempo il counter di LMS avanza ed il processo di sox è vivo, ma non sembra fare nulla: non utilizza CPU né fa I/O. Come se stesse aspettando qualcosa...

[UnixMan]

Ahi. Cominciamo subito male... la patch fallisce l'ultimo chunk:

--- src/dsf.c
+++ src/dsf.c
@@ -278,7 +281,10 @@ static void dsf_write_bits(struct dsf *dsf, const sox_sample_t *buf,
                unsigned d = dsd[i * dsf->block_size];

                for (j = start_bit; j < start_bit + len; j++) {
-                       d |= (buf[i + j * dsf->chan_num] > 0) << j;
+                       if (buf[i + j * dsf->chan_num] > 0)
+                               d |= 1 << j;
+                       else
+                               d &= ~(1 << j);
                }

                dsd[i * dsf->block_size] = d;

il codice in git non corrisponde.

Con la patch parzialmente applicata, qualcosa cambia: vengono prodotti dei dati, che squeezelite riceve e... "suona", ma è junk (viene fuori solo rumore):

[17-02-06 01:46:21.7378] Slim::Player::StreamingController::_Stream (1265) 00:1c:c0:37:22:73: stream
[17-02-06 01:46:21.7400] Slim::Player::StreamingController::_Stream (1302) Song queue is now 1
[17-02-06 01:46:21.7403] Slim::Player::StreamingController::_setPlayingState (2357) new playing state BUFFERING
[17-02-06 01:46:21.7404] Slim::Player::StreamingController::_setStreamingState (2366) new streaming state STREAMING
[17-02-06 01:46:21.7540] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: flc->dsf via: [sox] -q  -t flac $FILE$ -t dsf  -b 1 - rate -vMn 5644800 sdm -f  sdm-8
[17-02-06 01:46:21.7546] Slim::Player::TranscodingHelper::getConvertCommand2 (446) Matched: flc->dsf via: [sox] -q  -t flac $FILE$ -t dsf  -b 1 - rate -vMn 5644800 sdm -f  sdm-8

*** /tmp/squeezelite.log ***
[01:46:21.988143] _read_header:158 DSF version: 1 format: 0
[01:46:21.988599] _read_header:168 channels: 2
[01:46:21.988607] _read_header:169 sample rate: 5644800
[01:46:21.988613] _read_header:170 lsb first: 1
[01:46:21.988619] _read_header:171 sample bytes: 2305843009213693951
[01:46:21.988626] _read_header:172 block size: 4096
[01:46:21.988632] _read_header:178 found dsd len: 12
[01:46:21.988639] dsd_decode:527 setting track_start
[01:46:21.988646] dsd_decode:543 DSD to PCM output
[01:46:22.078507] output_thread:638 open output device: hw:CARD=D20
[01:46:22.078721] alsa_open:355 opening device at: 44100
[01:46:22.078983] alsa_open:406 opened device hw:CARD=D20 using format: S32_LE sample rate: 44100 mmap: 1
[01:46:22.079016] alsa_open:485 buffer: 499 period: 3 -> buffer size: 22005 period size: 7335
[01:46:22.196789] _output_frames:61 start buffer frames: 159744
[01:46:22.196853] _output_frames:146 track start sample rate: 705600 replay_gain: 0
[01:46:22.206886] output_thread:638 open output device: hw:CARD=D20
[01:46:22.221039] alsa_open:355 opening device at: 705600
[01:46:22.221299] alsa_open:406 opened device hw:CARD=D20 using format: S32_LE sample rate: 705600 mmap: 1
[01:46:22.221322] alsa_open:485 buffer: 499 period: 3 -> buffer size: 131070 period size: 43690

*** /var/log/squeezeboxserver//server.log ***
[17-02-06 01:46:22.2056] Slim::Player::StreamingController::playerTrackStarted (2180) 00:1c:c0:37:22:73
[17-02-06 01:46:22.2059] Slim::Player::StreamingController::_setPlayingState (2357) new playing state PLAYING
[17-02-06 01:46:22.2061] Slim::Player::StreamingController::_Playing (361) Song 1 has now started playing
[17-02-06 01:46:22.2066] Slim::Player::StreamingController::_Playing (390) Song queue is now 1
[17-02-06 01:46:22.9703] Slim::Player::StreamingController::pause (2116) 00:1c:c0:37:22:73
[17-02-06 01:46:22.9711] Slim::Player::StreamingController::_setPlayingState (2357) new playing state PAUSED

Dopo di che ho provato a ricostruire a mano come avrebbe dovuto essere la funzione con l'ultima parte della patch, ma non funziona: non solo produce dsf invalidi ma, curiosamente, si comporta come il sox di Mans non patchato (cioè, non fa neanche finta di suonare).

Direi che a questo punto è tempo interpellare Mans...

[UnixMan]

nota a margine:

se genero un file dsf con sox e chiedo informazioni sullo stesso (con soxi) prima che il file sia completo (cioè mentre sox sta ancora girando), ottengo questo risultato:

/opt/sox-dsd/bin/soxi *.dsf
/opt/sox-dsd/bin/soxi FAIL formats: can't open input file `pippo.dsf': invalid data chunk size

...quando invece il file (lo stesso file) è completo, risulta tutto ok:

/opt/sox-dsd/bin/soxi *.dsf

Input File     : 'pippo.dsf'
Channels       : 2
Sample Rate    : 5.6448e+06
Precision      : 1-bit
Duration       : 00:04:24.63 = 1493764608 samples ~ 19847 CDDA sectors
File Size      : 373M
Bit Rate       : 11.3M
Sample Encoding: 1-bit Direct Stream Digital

[antonellocaroli]

Paolo a te riproduce file dsf senza l'opzione -D in squeezelite?

[UnixMan]

Paolo a te riproduce file dsf senza l'opzione -D in squeezelite?

sì (vedi sopra).

[antonellocaroli]

sì

e sei sicuro che non ti faccia una conversione in PCM?

[UnixMan]

e sei sicuro che non ti faccia una conversione in PCM?

certo.

A te no? Se così fosse, checklist:

*) Il tuo DAC (l'interfaccia USB) supporta DSD nativo (non DoP)?

*) il Kernel e le librerie ALSA che usi lo supportano?

*) hai compilato SL con l'opzione DSD?