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[Cubox] no passthrough with HDMI

September 12th, 2014

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This topic contains 6 replies, has 2 voices, and was last updated by grisu68 1 day, 17 hours ago.

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  • September 12, 2014 at 07:34 #8610

    grisu68
    Member

    Hi,
    Dolby Passthrough via HDMI is not working on my cubox-i4 pro. My Onkyo TX-NR414 receives only PCM 2.0.
    I have changed the /etc/audio

    # Soundcard Configuration File
# Soundcard to use by name (e.g. "SB") or by ID (0 for first card, 1 for second, ...)
#ALSA_CARD="0"
ALSA_CARD="1"
# Output mode ( analog/digital/hdmi )
# digital is used for SPDIF/IEC958 output
#SOUNDCARD_MODE="analog"
SOUNDCARD_MODE="hdmi"
# passthrough mode for digital/hdmi outputs (none, ac3, dts or ac3dts)
#   (Note: in analog mode this option is ignored)
# none : software audio decoding for all streams
# ac3 : enable hardware passthrough for AC-3 streams only
# dts : enable hardware passthrough for DTS streams only
# ac3dts : enable hardware passthrough for both AC-3 and DTS streams
#SOUNDCARD_PT_MODE="none"
SOUNDCARD_PT_MODE="ac3dts"
# IEC958 Playback AC97-SPSA Mode:
# 0. PCM1
# 1. PCM2,PCM1 (rear)
# 2. Centre and LFE
# 3. PCM3,Modem,Dedicated S/PDIF
# For SPDIF most users will want 0, but some users may need 3.
AC97_SPSA="0"
# Playback channels
#   2 - Stereo
#   4 - Surround
#   6 - Full 5.1
# note: in SPDIF and hardware AC3 decoder mode this option is ignored.
CHANNELS="2"
# SB Live/Audigy Analog/Digital Output Mode:
# 0: Suitable for some older SB Live! cards
# 1: Suitable for newer SB Live! and all Audigy cards
SBL_AUDIGY="1"
# Debug mode
# 0: Don't write log file
# 1: Write log file to /tmp
MIXER_DEBUG="0"

    My log from aplay -l

    # aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: imxspdif [imx-spdif], device 0: S/PDIF PCM Playback dit-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: imxhdmisoc [imx-hdmi-soc], device 0: i.MX HDMI Audio Tx hdmi-hifi-0 []
  Subdevices: 0/1
  Subdevice #0: subdevice #0

    My xbmc.log

    01:00:10 T:1830581344  NOTICE: CAESinkALSA::EnumerateDevice data format "AE_FMT_LPCM" on device "hdmi:CARD=imxhdmisoc,DEV=0" seems to be not supported.
01:00:10 T:1830581344  NOTICE: CAESinkALSA::EnumerateDevice data format "AE_FMT_DTSHD" on device "hdmi:CARD=imxhdmisoc,DEV=0" seems to be not supported.
01:00:10 T:1830581344  NOTICE: CAESinkALSA::EnumerateDevice data format "AE_FMT_TRUEHD" on device "hdmi:CARD=imxhdmisoc,DEV=0" seems to be not supported.
01:00:10 T:1830581344  NOTICE: CAESinkALSA::EnumerateDevice data format "AE_FMT_EAC3" on device "hdmi:CARD=imxhdmisoc,DEV=0" seems to be not supported.
01:00:10 T:1830581344  NOTICE: CAESinkALSA::EnumerateDevice data format "AE_FMT_DTS" on device "hdmi:CARD=imxhdmisoc,DEV=0" seems to be not supported.
01:00:10 T:1830581344  NOTICE: CAESinkALSA::EnumerateDevice data format "AE_FMT_AC3" on device "hdmi:CARD=imxhdmisoc,DEV=0" seems to be not supported.
01:00:10 T:1830581344  NOTICE: CAESinkALSA::EnumerateDevice data format "AE_FMT_AAC" on device "hdmi:CARD=imxhdmisoc,DEV=0" seems to be not supported.
01:00:10 T:1830581344  NOTICE: Found 1 Lists of Devices
01:00:10 T:1830581344  NOTICE: Enumerated ALSA devices:
01:00:10 T:1830581344  NOTICE:     Device 1
01:00:10 T:1830581344  NOTICE:         m_deviceName      : default
01:00:10 T:1830581344  NOTICE:         m_displayName     : Default (imx-hdmi-soc Analog)
01:00:10 T:1830581344  NOTICE:         m_displayNameExtra:
01:00:10 T:1830581344  NOTICE:         m_deviceType      : AE_DEVTYPE_PCM
01:00:10 T:1830581344  NOTICE:         m_channels        : FL,FR,BL,BR,FC,LFE,SL,SR
01:00:10 T:1830581344  NOTICE:         m_sampleRates     : 32000,44100,48000,88200,96000,176400,192000
01:00:10 T:1830581344  NOTICE:         m_dataFormats     : AE_FMT_S24NE4L,AE_FMT_S16NE,AE_FMT_S16LE
01:00:10 T:1830581344  NOTICE:     Device 2
01:00:10 T:1830581344  NOTICE:         m_deviceName      : iec958:CARD=imxspdif,DEV=0
01:00:10 T:1830581344  NOTICE:         m_displayName     : imx-spdif
01:00:10 T:1830581344  NOTICE:         m_displayNameExtra: S/PDIF
01:00:10 T:1830581344  NOTICE:         m_deviceType      : AE_DEVTYPE_IEC958
01:00:10 T:1830581344  NOTICE:         m_channels        : FL,FR
01:00:10 T:1830581344  NOTICE:         m_sampleRates     : 32000,44100,48000,88200,96000,176400,192000
01:00:10 T:1830581344  NOTICE:         m_dataFormats     : AE_FMT_AC3,AE_FMT_DTS,AE_FMT_S24NE4L,AE_FMT_S16NE,AE_FMT_S16LE
01:00:10 T:1830581344  NOTICE:     Device 3
01:00:10 T:1830581344  NOTICE:         m_deviceName      : hdmi:CARD=imxhdmisoc,DEV=0
01:00:10 T:1830581344  NOTICE:         m_displayName     : imx-hdmi-soc
01:00:10 T:1830581344  NOTICE:         m_displayNameExtra: HDMI
01:00:10 T:1830581344  NOTICE:         m_deviceType      : AE_DEVTYPE_HDMI
01:00:10 T:1830581344  NOTICE:         m_channels        : FL,FR,BL,BR,FC,LFE,SL,SR
01:00:10 T:1830581344  NOTICE:         m_sampleRates     : 32000,44100,48000,88200,96000,176400,192000
01:00:10 T:1830581344  NOTICE:         m_dataFormats     : AE_FMT_LPCM,AE_FMT_DTSHD,AE_FMT_TRUEHD,AE_FMT_EAC3,AE_FMT_DTS,AE_FMT_AC3,AE_FMT_AAC,AE_FMT_S24NE4L,AE_FMT_S16NE,AE_FMT_S16LE

    My version:

    
# uname -a
Linux geexbox 3.10.30 #1 SMP Tue Sep 2 10:44:10 IDT 2014 armv7l GNU/Linux

    I tried also ALSA_CARD=”0″ and ALSA_CARD=”imxhdmisoc” in /etc/audio.

    Do you have any advice for me?
    Thank you, grisu

    September 12, 2014 at 07:58 #8611

    Warped Rudi
    Moderator

    Forget /etc/audio. There is no need to tweak this stuff on CuBox/CuBox-i. Did you enable passthrough and select the right output device for it in XBMC settings (advanced mode) ?

    September 12, 2014 at 08:06 #8612

    grisu68
    Member

    Yes, i enabled passthrough and selected the hdmi output device (The other one is SPDIF.)

    September 12, 2014 at 08:26 #8613

    Warped Rudi
    Moderator

    What about “AC3-capable receiver” ? I mean, if you get correct 2.0 sound (i.e. no noise etc.) then XBMC assumes that either the audio device or the receiver is not able to handle the format and therefore switches over to software decoding. Maybe you can enable XBMC debug logging to see what’s going on.

    September 12, 2014 at 09:15 #8614

    grisu68
    Member

    The receiver Onkyo TX-NR414 supports all in XBMC listed audio formats. The same receiver gets Dolby Digital from the satreceiver over HDMI without a problem.
    As you can see in the XBMC.log XBMC assumes that the cubox sound card (hdmi:CARD=imxhdmisoc,DEV=0) does not support AC3, DTS and so on, which is not correct.
    NOTICE: CAESinkALSA::EnumerateDevice data format “AE_FMT_LPCM” on device “hdmi:CARD=imxhdmisoc,DEV=0″ seems to be not supported.
    NOTICE: CAESinkALSA::EnumerateDevice data format “AE_FMT_DTSHD” on device “hdmi:CARD=imxhdmisoc,DEV=0″ seems to be not supported.
    NOTICE: CAESinkALSA::EnumerateDevice data format “AE_FMT_TRUEHD” on device “hdmi:CARD=imxhdmisoc,DEV=0″ seems to be not supported.
    NOTICE: CAESinkALSA::EnumerateDevice data format “AE_FMT_EAC3″ on device “hdmi:CARD=imxhdmisoc,DEV=0″ seems to be not supported.
    NOTICE: CAESinkALSA::EnumerateDevice data format “AE_FMT_DTS” on device “hdmi:CARD=imxhdmisoc,DEV=0″ seems to be not supported.
    NOTICE: CAESinkALSA::EnumerateDevice data format “AE_FMT_AC3″ on device “hdmi:CARD=imxhdmisoc,DEV=0″ seems to be not supported.
    NOTICE: CAESinkALSA::EnumerateDevice data format “AE_FMT_AAC” on device “hdmi:CARD=imxhdmisoc,DEV=0″ seems to be not supported.

    Back home i will enable XBMC debug. Any advice what i can debug for the linux part?

    September 12, 2014 at 15:07 #8616

    Warped Rudi
    Moderator

    You can safely ignore these messages. This information is unreliable and not used by XBMC. That’s why it says “seems to be” and not “is”. If you look at the “m_dataFormats” line of your ‘Device 3′, you’ll see a rather impressive list of supported formats. This is what XBMC really thinks the audio device can do. So your setup looks just fine and since we have not seen any problem with (non-HD) passthrough for a *long* time, I strongly suspect that it’s simply not enabled for some reason…

    September 15, 2014 at 08:05 #8621

    grisu68
    Member

    I had to reinstall geexbox. Passthrough over HDMI is now working. Thank you for all the explanations.

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