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make camera_trigger_canon_eos_capture "synchronous" #1027

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make camera_trigger_canon_eos_capture "synchronous" #1027

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28 changes: 28 additions & 0 deletions camlibs/ptp2/library.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5995,9 +5995,14 @@ camera_trigger_canon_eos_capture (Camera *camera, GPContext *context)
uint32_t result;
struct timeval focus_start;
PTPDevicePropDesc dpd;
int full_press_wait = 0;

GP_LOG_D ("camera_trigger_canon_eos_capture");

for (unsigned i = 0; i < params->nrofcanon_props; i++)
if (params->canon_props[i].proptype == PTP_DPC_CANON_EOS_Owner)
full_press_wait = atoi(params->canon_props[i].dpd.CurrentValue.str);

if (!params->eos_captureenabled)
camera_prepare_capture (camera, context);
else
Expand Down Expand Up @@ -6107,6 +6112,12 @@ camera_trigger_canon_eos_capture (Camera *camera, GPContext *context)
return GP_ERROR;
}
/* no event check between */

if (full_press_wait) {
GP_LOG_D ("waiting %dms", full_press_wait);
usleep (full_press_wait * 1000);
}

/* full release now */
C_PTP_REP_MSG (ptp_canon_eos_remotereleaseoff (params, 2), _("Canon EOS Full-Release failed"));
ptp_check_eos_events (params);
Expand Down Expand Up @@ -6182,6 +6193,23 @@ camera_trigger_canon_eos_capture (Camera *camera, GPContext *context)
return GP_ERROR;
}
}

if (full_press_wait)
{
struct timeval event_start = time_now();
PTPPropertyValue propval = { 0 };
for (unsigned i = 0; i < params->nrofcanon_props; i++)
if (params->canon_props[i].proptype == PTP_DPC_CANON_EOS_ISOSpeed)
propval.u16 = params->canon_props[i].dpd.CurrentValue.u16;

do {
// if setting iso does not return busy, the camera is ready to take new commands or is lost -> exit
ret = ptp_canon_eos_setdevicepropvalue (params, PTP_DPC_CANON_EOS_ISOSpeed, &propval, PTP_DTC_UINT16);
back_off_wait = 0;
} while (ret == PTP_RC_DeviceBusy && waiting_for_timeout (&back_off_wait, event_start, 30*1000));
params->eos_camerastatus = 0; /* manually set it to 'done' */
}

return GP_OK;
}

Expand Down
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