[alsa-devel] [PATCH v3 0/5] ALSA: hda - hdmi: ATI/AMD multi-channel and HBR support

[LANGLOIS Olivier PIS -EXT]

> >
> > Yep. I did manually verify that your EDID really claims AAC support,
> > though. It could be wrong I guess, and the reported max_bitrate is
> > suspiciously the same as for AC-3.
> >
> > If you want to try AAC bitstreaming, you can download this:
> > http://onse.fi/files/testi.aac.lc.unconfirmed.spdif
> > and play it back using:
> > aplay -Dhdmi:CARD=Generic,DEV=0,AES0=6 -r44100 -f s16_le -c2 \
> >     testi.aac.lc.unconfirmed.spdif
> >
> > (file unconfirmed as I don't have AAC HW)
>
> That looks like its playing something, but there's no sound at all. The receiver
> claims there's a Dolby Digital stream active while that aplay command is
> running... so yeah, looks like the EDID is lying.
> (Same with another raw AAC LE file I just googled).
>
> But on the good side, multichannel AC3 and DTS passthrough is working
> flawlessly with XBMC ;)
>
> Thanks again,
> Andre

Just throwing an idea like this. There is a small voice telling me that maybe HDMI receiver supporting AAC expect it wrapped inside ADTS packets rather than just raw AAC stream.

Also note that ffmpeg report formatting problem:

lano1106 at hpmini ~ $ ffprobe testi.aac.lc.unconfirmed.spdif
ffprobe version 2.1 Copyright (c) 2007-2013 the FFmpeg developers
  built on Oct 29 2013 15:37:36 with gcc 4.8.2 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static --enable-avresample --enable-dxva2 --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-pic --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-swresample --disable-vdpau --disable-vaapi --arch=native --cpu=native --enable-version3 --enable-x11grab
  libavutil      52. 48.100 / 52. 48.100
  libavcodec     55. 39.100 / 55. 39.100
  libavformat    55. 19.104 / 55. 19.104
  libavdevice    55.  5.100 / 55.  5.100
  libavfilter     3. 90.100 /  3. 90.100
  libavresample   1.  1.  0 /  1.  1.  0
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
[spdif @ 0x8afc6b0] Invalid AAC packet in IEC 61937
testi.aac.lc.unconfirmed.spdif: Invalid data found when processing input


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