Posts by J.L.C.

J.L.C. · USB DAC Native DSD Support J.L.C. July 24, 2018 at 3:02 PM

Thanks!

I tried the latest Milhouse build, but unfortunately it seems it's a little too early. Addons like MPD aren't available yet (listed but installation fails), so DACs can't be tested.

J.L.C. · USB DAC Native DSD Support J.L.C. July 23, 2018 at 3:15 AM

I use LibreElec/Kodi as my multimedia hub and have several USB DACs that support native DSD decoding. On current LibreElec generic builds, DSD files are software decoded on LibreElec and sent to the DACs as PCM files. I am able to send native DSD files to my DACs on my Ubuntu linux machines by compiling the kernel with additions to ../sound/usb/quirks.c

Current ALSA versions support bit-perfect transmission of DSD files over USB to vendor/device ID's specified in ../sound/usb/quirks.c

Would this be possible in OpenElec?

The following section added to ../sound/usb/quirks.c (added from RoPieee) enables native DSD support for a number of USB DACs on the market:

Code

/* XMOS based USB DACs */
switch (chip->usb_id) {
case USB_ID(0x1511, 0x0037): /* AURALiC VEGA */
case USB_ID(0x20b1, 0x0002): /* Wyred 4 Sound DAC-2 DSD */
case USB_ID(0x20b1, 0x3008): /* iFi Audio micro/nano iDSD */
case USB_ID(0x20b1, 0x2004): /* Matrix Audio X-SPDIF 2 */
case USB_ID(0x20b1, 0x2008): /* Matrix Audio X-Sabre */
case USB_ID(0x20b1, 0x300a): /* Matrix Audio Mini-i Pro */
case USB_ID(0x20b1, 0x3089): /* Mola-Mola DAC */
case USB_ID(0x22d9, 0x0416): /* OPPO HA-1 */
case USB_ID(0x22d9, 0x0436): /* OPPO Sonica */
case USB_ID(0x22d9, 0x0461): /* OPPO UDP-205 */
case USB_ID(0x2522, 0x0012): /* LH Labs VI DAC Infinity */
case USB_ID(0x25ce, 0x001f): /* Mytek Brooklyn DAC */
case USB_ID(0x25ce, 0x0021): /* Mytek Manhattan DAC */
case USB_ID(0x25ce, 0x8025): /* Mytek Brooklyn DAC+ */
case USB_ID(0x2772, 0x0230): /* Pro-Ject Pre Box S2 Digital */
if (fp->altsetting == 2)
return SNDRV_PCM_FMTBIT_DSD_U32_BE;
break;

case USB_ID(0x0d8c, 0x0316): /* Hegel HD12 DSD */
case USB_ID(0x152a, 0x8750): /* Topping DX7s */
case USB_ID(0x16d0, 0x09dd): /* Encore mDSD */
case USB_ID(0x16b0, 0x06b2): /* NuPrime DAC-10 */
case USB_ID(0x16d0, 0x0733): /* Furutech ADL Stratos */
case USB_ID(0x16d0, 0x09db): /* NuPrime Audio DAC-9 */
case USB_ID(0x1db5, 0x0003): /* Bryston BDA3 */
case USB_ID(0x20b1, 0x000a): /* Gustard DAC-X20U */
case USB_ID(0x20b1, 0x2005): /* Denafrips Ares DAC */
case USB_ID(0x20b1, 0x2009): /* DIYINHK DSD DXD 384kHz USB to I2S/DSD */
case USB_ID(0x20b1, 0x2023): /* JLsounds I2SoverUSB */
case USB_ID(0x20b1, 0x3021): /* Eastern El. MiniMax Tube DAC Supreme */
case USB_ID(0x20b1, 0x3023): /* Aune X1S 32BIT/384 DSD DAC */
case USB_ID(0x20b1, 0x302d): /* Unison Research Unico CD Due */
case USB_ID(0x20b1, 0x3036): /* Holo Springs Level 3 R2R DAC */
case USB_ID(0x20b1, 0x307b): /* CH Precision C1 DAC */
case USB_ID(0x20b1, 0x3086): /* Singxer F-1 converter board */
case USB_ID(0x22d9, 0x0426): /* OPPO HA-2 */
case USB_ID(0x22e1, 0xca01): /* HDTA Serenade DSD */
case USB_ID(0x249c, 0x9326): /* M2Tech Young MkIII */
case USB_ID(0x2616, 0x0106): /* PS Audio NuWave DAC */
case USB_ID(0x2622, 0x0041): /* Audiolab M-DAC+ */
case USB_ID(0x27f7, 0x3002): /* W4S DAC-2v2SE */
case USB_ID(0x29a2, 0x0086): /* Mutec MC3+ USB */
case USB_ID(0x6b42, 0x0042): /* MSB Technology */
if (fp->altsetting == 3)
return SNDRV_PCM_FMTBIT_DSD_U32_BE;
break;


Is something like this possible with Kodi on LibreElec?

Display More