SND_PCM_HW_CONSTRAIN(9) PCM API SND_PCM_HW_CONSTRAIN(9)NAME
snd_pcm_hw_constraint_minmax - apply a min/max range constraint to an interval
int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime * runtime, snd_pcm_hw_param_t var, unsigned int min, unsigned int max);
PCM runtime instance
hw_params variable to apply the range
the minimal value
the maximal value
Apply the min/max range constraint to an interval parameter.
Positive if the value is changed, zero if it's not changed, or a negative error code.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_PCM_HW_CONSTRAIN(9)
Check Out this Related Man Page
pfsclamp(1) General Commands Manual pfsclamp(1)NAME
pfsclamp - Clamp color and luminance channel values to be within the specified range
pfsclamp [--min <minimum>] [--max <maximum>] [--percentile] [--zero] [--rgb]
Use this command to clamp values of luminance and color channels to be within the specified range. I.e. if a value in the channel is above
the specified maximum or below specified minimum, set the value to either minimum or maximum.
The command operates directly on XYZ channels.
OPTIONS --min <val>
Lower bound for clamping. Default value: 0.0001 (10^-4)
Upper bound for clamping. Default value: 100000000 (10^8)
Treat given min and max values as a percentile.
Set values out of clamping range to zero, instead of setting to specified maximum and minimum.
Perform clamping in RGB space.
pfsin memorial.hdr | pfsclamp | pfsout memorial_cl.hdr
Remove possible out-of-range values, for examples zeros, from memorial image.
pfsin memorial.hdr | pfsclamp --max 0.95 -p | pfsout memorial_cl.hdr
Remove 5% of the brightest pixels from the original image.
SEE ALSO pfsin(1)pfsout(1)BUGS
Please report bugs and comments to Rafal Mantiuk <email@example.com> and Grzegorz Krawczyk <firstname.lastname@example.org>.
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