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

On Mon, 20 May 2019 18:51:06 +0200, Miartus, Adam (Arion Recruitment; ADITG/ESM) wrote:

From: Adam Miartus amiartus@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@de.adit-jv.com Reviewed-by: Timo Wischer twischer@de.adit-jv.com

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

thanks,

Takashi