alsa-project/alsa-lib pull request #78 was opened from vijaypalaniswamy:

When dmix uses non-interleaved mixing mode the offset and step width to sum_buffer was calculated by using the dmix channels instead of the slave channels. This leads to audio distortions due to frame corruption.

example: - With below configuratio, Do aplay on both device in parallel for audio distortion

pcm.dmix_2_channels { type dmix ipc_key 5678293 ipc_perm 0660 ipc_gid audio bindings [0 1]

slave { pcm "hardware" channels 2 periods 4 period_time 40000 } }

pcm.dmix_1_channels { type dmix ipc_key 5678293 ipc_perm 0660 ipc_gid audio bindings [0]

slave { pcm "hardware" channels 1 periods 4 period_time 40000 } }

pcm.hardware { type hw card 0 channels 2 rate 48000 format S16_LE }

Signed-off-by: Vijay Palaniswamy vijay.palaniswamy@in.bosch.com

Request URL : https://github.com/alsa-project/alsa-lib/pull/78 Patch URL : https://github.com/alsa-project/alsa-lib/pull/78.patch Repository URL: https://github.com/alsa-project/alsa-lib