Re: [PATCH v3] ALSA: compress: allow setting codec params after next track

From: Vinod Koul
Date: Wed Jun 21 2023 - 01:23:32 EST


On 19-06-23, 10:28, Srinivas Kandagatla wrote:
> For gapless playback it is possible that each track can have different
> codec profile with same decoder, for example we have WMA album,
> we may have different tracks as WMA v9, WMA v10 and so on
>
> Or if DSP's like QDSP have abililty to switch decoders on single stream
> for each track, then this call could be used to set new codec parameters.
>
> Existing code does not allow to change this profile while doing gapless
> playback.
>
> Reuse existing SNDRV_COMPRESS_SET_PARAMS to set this new track params along
> some additional checks to enforce proper state machine.
>
> With this new changes now the user can call SNDRV_COMPRESS_SET_PARAMS
> anytime after setting next track and additional check in write should
> also ensure that params are set before writing new data.

Acked-by: Vinod Koul <vkoul@xxxxxxxxxx>

--
~Vinod