23 Mar
2021
23 Mar
'21
1:15 p.m.
Dne 23. 03. 21 v 12:43 Codrin Ciubotariu napsal(a):
To achieve this, the first thing needed is to detect whether a HW constraint rule is enforced by a FE or a BE DAI. This means that snd_pcm_hw_rule_add() needs to be able to differentiate between the two type of DAIs. For this, the runtime pointer to struct snd_pcm_runtime is replaced with a pointer to struct snd_pcm_substream, to be able to reach substream->pcm->internal to differentiate between FE and BE DAIs.
Think about other not-so-invasive solution. What about to use 'runtime->private_data' (struct snd_soc_pcm_runtime *) to determine FE / BE?
Jaroslav
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Jaroslav Kysela perex@perex.cz
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.