SND_PCM_CAPTURE_READ(9) Sound Devices SND_PCM_CAPTURE_READ(9)NAME
snd_pcm_capture_ready - check whether the capture buffer is available
SYNOPSIS
int snd_pcm_capture_ready(struct snd_pcm_substream * substream);
ARGUMENTS
substream
the pcm substream instance
DESCRIPTION
Checks whether enough capture data is available on the capture buffer.
Returns non-zero if available, or zero if not.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 SND_PCM_CAPTURE_READ(9)
Check Out this Related Man Page
EVTEST-CAPTURE(1)EVTEST-CAPTURE(1)NAME
evtest-capture - Input device event capture program
SYNOPSIS
evtest-capture "/dev/input/eventX" [evtest-capture.xml]
DESCRIPTION
evtest-capture captures the information and events from the input device specified on the command line and writes it to the xml file given.
If no filename is given for the output file, evtest-capture.xml is chosen as default.
evtest-capture needs to be able to read from the device; in most cases this means it must be run as root.
Together with with evtest-create-device.xsl, a simple uinput-based software input device can be created that replays the events as if the
same input was performed on the physical device. This can be useful to replicate bugs with input devices in upper layers of the stack.
To convert evtest-capture.xml into such a uinput device, run:
xsltproc evtest-create-device.xls evtest-capture.xml > mydevice.c
gcc -o mydevice mydevice.c
./mydevice
DIAGNOSTICS
If evtest-capture does not see any events even though the device is being used, the device may be grabbed by a process (EVIOCGRAB). This is
usually the case when debugging a synaptics device from within X. VT switching to a TTY or shutting down the X server terminates this grab
and synaptics devices can be debugged.
SEE ALSO evtest(1)AUTHOR
evtest-capture was written by Peter Hutterer <peter.hutterer@redhat.com[1]>.
NOTES
1. peter.hutterer@redhat.com
mailto:peter.hutterer@redhat.com
05/21/2012 EVTEST-CAPTURE(1)
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