depau/libfprint
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

vfs301: Start capture only on state change to AWAIT_FINGER_ON

Browse source 
Start the capture when the state changes to AWAIT_FINGER_ON instead of
assuming that the device should always be active.

Closes: #320
This commit is contained in:
Benjamin Berg 2020-11-04 14:08:10 +01:00
parent d3076039d0
commit e5fa54e8e7
1 changed files with 14 additions and 24 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
libfprint/drivers/vfs301.c
View file

@ -147,18 +147,6 @@ m_loop_state (FpiSsm *ssm, FpDevice *_dev)
}
}
/* Complete loop sequential state machine */
static void
m_loop_complete (FpiSsm *ssm, FpDevice *_dev, GError *error)
{
if (error)
{
g_warning ("State machine completed with an error: %s", error->message);
g_error_free (error);
}
/* Free sequential state machine */
}
/* Exec init sequential state machine */
static void
m_init_state (FpiSsm *ssm, FpDevice *_dev)
@ -176,19 +164,7 @@ m_init_state (FpiSsm *ssm, FpDevice *_dev)
static void
m_init_complete (FpiSsm *ssm, FpDevice *dev, GError *error)
{
FpiSsm *ssm_loop;
fpi_image_device_activate_complete (FP_IMAGE_DEVICE (dev), error);
if (!error)
{
/* Notify activate complete */
/* Start loop ssm */
ssm_loop = fpi_ssm_new (dev, m_loop_state, M_LOOP_NUM_STATES);
fpi_ssm_start (ssm_loop, m_loop_complete);
}
/* Free sequential state machine */
}
/* Activate device */
@ -213,6 +189,19 @@ dev_deactivate (FpImageDevice *dev)
fpi_image_device_deactivate_complete (dev, NULL);
}
static void
dev_change_state (FpImageDevice *dev, FpiImageDeviceState state)
{
FpiSsm *ssm_loop;
if (state != FPI_IMAGE_DEVICE_STATE_AWAIT_FINGER_ON)
return;
/* Start a capture operation. */
ssm_loop = fpi_ssm_new (FP_DEVICE (dev), m_loop_state, M_LOOP_NUM_STATES);
fpi_ssm_start (ssm_loop, NULL);
}
static void
dev_open (FpImageDevice *dev)
{
@ -273,6 +262,7 @@ fpi_device_vfs301_class_init (FpDeviceVfs301Class *klass)
img_class->img_close = dev_close;
img_class->activate = dev_activate;
img_class->deactivate = dev_deactivate;
img_class->change_state = dev_change_state;
img_class->bz3_threshold = 24;