ALSA: usb-audio: support delay calculation on capture streams

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Enable delay report on capture path. The delay is reset when an
URB is retired and increment at each call to .pointer based
on frame counter changes. The precision of the delay
information is limited to 1ms as in the playback case.

This reverts commit 3f94fad095.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Pierre-Louis Bossart 2012-12-19 11:39:05 -06:00 • committed by Takashi Iwai

parent a49f0d1ea3

commit e4cc615340

1 changed files with 20 additions and 3 deletions

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sound/usb/pcm.c

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