README-native-DSD

[13-feb-15]

mpd.conf config options for native DSD playback:

audio_output {
	type "alsa"
	name "iFi Audio micro iDSD"
	device "hw:1,0"
	# Enable native DSD playback
	dsd_native "yes"
	# Select 32-bit DSD_U32_BE output format
	dsd_native_type "2"
}

Use 'dsd_native_type "0"' for DSD_U8 (e.g. botic driver).
Use 'dsd_native_type "3"' for DSD_U32_LE (e.g. botic driver).

Note: disable DoP output config option: 'dsd_usb "no"' when using native DSD playback

[29-Nov-14]
Native DSD playback support for Denon/Marantz devices has been added, see:
https://github.com/lintweaker/xmos-native-dsd

[20-Oct-14]
For native DSD support for XMOS based USB DACs (e.g. iFi nano/micro iDSD) see:
https://github.com/lintweaker/xmos-native-dsd

[13-Jul-14]
Native DSD support now in a working state. It requires support in the ALSA
driver (sample format SNDRV_PCM_FORMAT_DSD_U8).

Tested on BeagleBone Black with Botic linux driver.
See: http://www.diyaudio.com/forums/twisted-pear/258254-support-botic-linux-driver.html

How to enable native DSD playback support:

add the new 'dsd_native' config option to the audio_output section in the
mpd.conf file. E.g.

audio_output {
        type            "alsa"
        name            "Botic"
        device          "hw:0,0"
        dsd_native      "yes"

# BOTIC fixup: request the lowest period time
        period_time     "1"
}


For DoP (DSD-over-PCM) output, the 'dsd_usb' option is still available.
If both 'dsd_native' and 'dsd_usb' are configured the 'dsd_usb' option takes
precedence.

** Warning ** Do not enable dsd_native on systems which do not support it **