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elan: Skip more final frames to avoid bulging captures

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If users put their finger on the sensor between the bulge and
"un-bulge" area first and then swipe, the captured image would
be bad.

Skipping more frames can reduce the impact, so bump
ELAN_SKIP_LAST_FRAMES to 2.
This commit is contained in:
Dave
2019-04-09 02:30:48 -04:00
committed by Bastien Nocera
parent 2babfa0625
commit 3e666130c2
1 changed files with 1 additions and 1 deletions
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2
libfprint/drivers/elan.h
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@@ -56,7 +56,7 @@
/* number of frames to drop at the end of capture because frames captured /* number of frames to drop at the end of capture because frames captured
* while the finger is being lifted can be bad */ * while the finger is being lifted can be bad */
#define ELAN_SKIP_LAST_FRAMES 1 #define ELAN_SKIP_LAST_FRAMES 2
#define ELAN_CMD_LEN 0x2 #define ELAN_CMD_LEN 0x2
#define ELAN_EP_CMD_OUT (0x1 | LIBUSB_ENDPOINT_OUT) #define ELAN_EP_CMD_OUT (0x1 | LIBUSB_ENDPOINT_OUT)