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

[Anssi Hannula]

Takashi Iwai kirjoitti tiistai, 3. elokuuta 2010 13:59:09:
> At Tue,  3 Aug 2010 13:28:56 +0300,
> 
> Anssi Hannula wrote:
> > 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.
> 
> Thanks, I applied both patches.
> 
> There are some magic numbers there like 0x8000, and I'm going to define
> them...

Yeah, I guess all the Stream Format bits should be defined to get rid of all 
the existing magic numbers in snd_hda_calc_stream_format() as well.

> 
> Takashi
> 
> > ---
> > 
> > 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(-)

-- 
Anssi Hannula