[alsa-devel] [PATCH 0/2] ALSA: hda - support HDMI HBR passthrough

[Anssi Hannula]

Hi all!

This patchset adds support for passing through IEC 61937 encapsulated
compressed audio at high bitrates (i.e. those over 6.144Mbps).
At least TrueHD and DTS-HD are such formats.

I've tested this using an NVIDIA hdmi codec and the following ffmpeg
patch which adds support for TrueHD in its IEC 61937 muxer:
http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2010-August/094317.html

One needs to set the AES0 & 0x02 (non-audio) bit during playback so that
the data is not transmitted as normal 8 channel PCM audio.

---
Anssi Hannula (2):
      ALSA: hda - Set Stream Type in Stream Format according to AES0
      ALSA: hda - Add support for HDMI HBR passthrough

 sound/pci/hda/hda_codec.c       |    6 ++++-
 sound/pci/hda/hda_codec.h       |    6 ++++-
 sound/pci/hda/hda_intel.c       |    3 +-
 sound/pci/hda/patch_hdmi.c      |   40 ++++++++++++++++++++++++++++++++++++++-
 sound/pci/hda/patch_intelhdmi.c |    3 +-
 sound/pci/hda/patch_nvhdmi.c    |    3 +-
 6 files changed, 53 insertions(+), 8 deletions(-)