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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2018-10-30 15:31:15 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-10-30 12:22:12 +0100 |
| commit | 826b5de90c0bca4e9de6231da9e1730480621588 (patch) | |
| tree | 504349d4e97ca62d7aa72a97a017b09b3d113742 /Documentation/media/typical_media_device.svg | |
| parent | ac237c28d5ac1b241d58b1b7b4b9fa10efb22fb5 (diff) | |
ALSA: firewire-lib: fix insufficient PCM rule for period/buffer size
In a former commit, PCM constraint based on LCM of SYT_INTERVAL was
obsoleted with PCM rule. However, the new PCM rule brings -EINVAL in
some cases that max/min values of size of buffer/period is not
multiples of one of values of SYT_INTERVAL. For example, pulseaudio
always fail to configure PCM substream.
This commit changes strategy for the PCM rule. Although the buggy rules
had a single dependency (rate from period, period from rate, rate from
buffer, buffer from rate), a revised rule has double dependencies
(period from period/rate, buffer from buffer/rate). A step of value is
calculated with table of SYT_INTERVAL and list of available rates. This
prevents interval template which brings -EINVAL to a call of
snd_interval_refine().
Fixes: 5950229582bc('ALSA: firewire-lib: add PCM rules to obsolete PCM constraints based on LCM of SYT_INTERVAL')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/media/typical_media_device.svg')
0 files changed, 0 insertions, 0 deletions