[alsa-devel] [ALSA patch] [PATCH - alsa-lib 4/4] pcm_file: add infile read support for mmap mode

[Takashi Iwai]

On Mon, 20 May 2019 18:51:06 +0200,
Miartus, Adam (Arion Recruitment; ADITG/ESM) wrote:
> 
> From: Adam Miartus <amiartus at de.adit-jv.com>
> 
> mmap_begin callback is used to copy data from input file to mmaped buffer
> 
> guard for corner use of api (multiple mmap_begin calls by user) is introduced to check if next continuous buffer was already overwritten
> 
> buffer is overwritten with input file data only in case of stream capture
> 
> Signed-off-by: Adam Miartus <amiartus at de.adit-jv.com>
> Reviewed-by: Timo Wischer <twischer at de.adit-jv.com>

Can't we copy the data in snd_pcm_file_mmap_commit() just like the
playback case?


thanks,

Takashi