[vlc-devel] Core audio S/PDIF output with latency calculation

Felix Paul Kühne fkuehne.videolan at gmail.com
Mon Mar 11 00:01:27 CET 2013

On 10.03.2013, at 18:05, David Fuhrmann <david.fuhrmann at gmail.com> wrote:

> Am 10.03.2013 um 17:28 schrieb Felix Paul Kühne <fkuehne.videolan at gmail.com>:
>> Looks ok to me. Would it be feasible to use AOUT_SPDIF_SIZE within auhal.c instead?
> I guess you mean that multiples of AOUT_SPDIF_SIZE should be used for circular buffer size in auhal? Might make sense, indeed.

Yep :)

>>> <0002-dtstospdif-set-i_length-in-output-buffer.patch>
>> Honestly, I don't understand the magic numbers used here. Could you add some documentation for future reference?
> The number is directly derived from the i_nb_samples calculation one or two lines above. :-)
> Remi indicated that already the initial calculation of i_length might be incorrect. (?) Therefore, I am thinking about to replace the patch by just summing up the 3 input i_length values, even if the result would be the same probably. (On the other side, this would not really fit into the current calculation method of the other values.)
> With this more generic approach, the result would make sense in any case, also in the case that the length calculation might be changed elsewhere, later on.
> Opinions about that?
IMO, it is fine as is. However, if this is feasible for you within the 2.1 timeframe, why not? :)

What's your opinion, Rémi?



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