On Tue, 2020-05-19 at 16:06 +0000, Daniel Baluta wrote:
Hello everyone,
Is there any topology that mixes two PCM streams that we can take as an example to start with?
We would like to do something like this:
PCM0 ----> volume ----------------+ |-- LL mixer ----> volume ---->DAI PCM1 ----> volume ----> SRC --+
Also, should this result in 1 sound card with 2 sub devices, right?
Hi Daniel,
We already have a pipeline similar to this that we use in our topologies. Take for example sof-apl-pcm512x.m4. It uses the "pipe-low-latency-playback" pipeline for PCM0 pipeline 1 and the "pipe-pcm-media" pipeline (pipeline 5) is connected to the mixer in pipeline 1. Hope this helps.
Is there a plan to write a topology GUI tool? Writing m4 files is not really easy 🙂.
We dont have a GUI yet for writing topologies but there's a tool to visualize the topologies that you build with m4 for now.
THanks, Ranjani