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| author | Clemens Ladisch <clemens@ladisch.de> | 2011-09-21 08:30:20 +0200 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2011-09-21 08:30:20 +0200 |
| commit | 6dab1a91cbbd40d2f52a0c5a1bd961a1db7bb319 (patch) | |
| tree | 99f03573b102ed4e832b7c99b8a2b84b32a8a4e2 | |
| parent | 7924500688fdfeac71e5968e5f5875726a8dce14 (diff) | |
| download | alsa-lib-6dab1a91cbbd40d2f52a0c5a1bd961a1db7bb319.tar.gz | |
pcm: recalculate all rules after changing hw_params flags
The rules engine avoids recalculating rules that do not depend on
any changed parameter, but there is no mechanism to record changed
flags. So when we change a flag, we have to ensure that all rules
depending on that flag are recalculated; the only method to do this
is to force recalculation of all rules.
So far, there have been no kernel drivers with rules depending
on flags, but rules to disable hardware SRCs by setting
SND_PCM_HW_PARAMS_NORESAMPLE are being introduced now.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
| -rw-r--r-- | src/pcm/pcm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c index 12f8cd0d..bc5c6e4a 100644 --- a/src/pcm/pcm.c +++ b/src/pcm/pcm.c @@ -4200,6 +4200,7 @@ int snd_pcm_hw_params_set_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *par params->flags |= SND_PCM_HW_PARAMS_NORESAMPLE; else params->flags &= ~SND_PCM_HW_PARAMS_NORESAMPLE; + params->rmask = ~0; return snd_pcm_hw_refine(pcm, params); } @@ -4231,6 +4232,7 @@ int snd_pcm_hw_params_set_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *par params->flags |= SND_PCM_HW_PARAMS_EXPORT_BUFFER; else params->flags &= ~SND_PCM_HW_PARAMS_EXPORT_BUFFER; + params->rmask = ~0; return snd_pcm_hw_refine(pcm, params); } @@ -4280,6 +4282,7 @@ int snd_pcm_hw_params_set_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *par params->flags |= SND_PCM_HW_PARAMS_NO_PERIOD_WAKEUP; } else params->flags &= ~SND_PCM_HW_PARAMS_NO_PERIOD_WAKEUP; + params->rmask = ~0; return snd_pcm_hw_refine(pcm, params); } |