[alsa-devel] HDA - hdmi_show_short_audio_desc puts wrong rates in eld#N

Anssi Hannula anssi.hannula at iki.fi
Tue Jan 11 18:25:55 CET 2011

On 07.12.2010 13:01, Anssi Hannula wrote:
> Hi!
> Just noticed that the sample rates reported in eld#X.Y are wrong.
> They are printed by hdmi_show_short_audio_desc() in hda_eld.c. That
> function uses the snd_print_pcm_rates() function to convert the rates
> bitmap to a string. However, snd_print_pcm_rates() takes a HDA rates
> bitmap, not a generic SNDRV_ one.  (BTW, an interesting function name
> for an internal HDA thing...)
> This results in several errors.
> For example, my 32000 44100 48000 88200 96000 176400 192000
> becomes 44100 48000 88200 176400 192000 384000.

In case I write a patch for this, is there a preferred approach?

(a) Add a function into alsa core that returns such a list string when
given a rates bitmap, or

(b) export the rates array in core and make the string-giving function a
static one for hda_eld.c, or

(c) add a static function into hda_eld.c that parses the bitmap manually
by checking it for all the hdmi rates (7 IIRC).

Anssi Hannula

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