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gf_vcap_set_contrast()

Set the video capture unit contrast

Synopsis:

#include <gf/gf.h>

void gf_vcap_set_contrast ( gf_vcap_t   vcap,
                            int         contrast );

Arguments:

vcap: The handle of the video capture unit, returned by gf_vcap_attach().
contrast: The contrast adjust to apply to captured video. The value is in the range of -128 to 127. A value of zero means normal contrast.

Library:

gf

Description:

This function controls the contrast of a video capture unit.

Changes made to a capture unit via the gf_vcap_set_*() set of functions are enqueued and do not take effect until you explicitly call gf_vcap_update().

Classification:

QNX Graphics Framework

Safety:
Interrupt handler	No
Signal handler	No
Thread	Yes