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| author | Matthias Vogelgesang <matthias.vogelgesang@kit.edu> | 2012-08-07 14:40:38 +0200 |
|---|---|---|
| committer | Matthias Vogelgesang <matthias.vogelgesang@gmail.com> | 2012-08-07 15:46:21 +0200 |
| commit | 399ff33fe9ee40867486df64f50f129c88501daa (patch) | |
| tree | e4ca3587ba8d95cff34064883e07e56a440fac5f /src | |
| parent | 91a50f1a16c253bbc147cb2ccb120b6cd35e2ac4 (diff) | |
| download | libuca-399ff33fe9ee40867486df64f50f129c88501daa.tar.gz libuca-399ff33fe9ee40867486df64f50f129c88501daa.tar.bz2 libuca-399ff33fe9ee40867486df64f50f129c88501daa.tar.xz libuca-399ff33fe9ee40867486df64f50f129c88501daa.zip | |
Calculate timeout only when recording starts
Reading register values is not really fast, so we keep the last exposure time
when starting the acquisition.
Diffstat (limited to 'src')
| -rw-r--r-- | src/cameras/uca-ufo-camera.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/src/cameras/uca-ufo-camera.c b/src/cameras/uca-ufo-camera.c index 5e17937..b17e417 100644 --- a/src/cameras/uca-ufo-camera.c +++ b/src/cameras/uca-ufo-camera.c @@ -93,9 +93,10 @@ static guint N_PROPERTIES; static GHashTable *ufo_property_table; /* maps from prop_id to RegisterInfo* */ struct _UcaUfoCameraPrivate { - pcilib_t *handle; - guint n_bits; - guint bit_mode; + pcilib_t *handle; + pcilib_timeout_t timeout; + guint n_bits; + guint bit_mode; }; static void @@ -224,16 +225,24 @@ UcaUfoCamera *uca_ufo_camera_new(GError **error) static void uca_ufo_camera_start_recording(UcaCamera *camera, GError **error) { + UcaUfoCameraPrivate *priv; + gdouble exposure_time; + int err; + g_return_if_fail(UCA_IS_UFO_CAMERA(camera)); - UcaUfoCameraPrivate *priv = UCA_UFO_CAMERA_GET_PRIVATE(camera); - int err = pcilib_start(priv->handle, PCILIB_EVENT_DATA, PCILIB_EVENT_FLAGS_DEFAULT); + + priv = UCA_UFO_CAMERA_GET_PRIVATE(camera); + err = pcilib_start(priv->handle, PCILIB_EVENT_DATA, PCILIB_EVENT_FLAGS_DEFAULT); PCILIB_SET_ERROR(err, UCA_UFO_CAMERA_ERROR_START_RECORDING); gboolean transfer_async = FALSE; g_object_get(G_OBJECT(camera), "transfer-asynchronously", &transfer_async, + "exposure-time", &exposure_time, NULL); + priv->timeout = ((pcilib_timeout_t) (exposure_time * 1000 + 50.0) * 1000); + if (transfer_async) { pcilib_trigger(priv->handle, PCILIB_EVENT0, 0, NULL); pcilib_stream(priv->handle, &event_callback, camera); @@ -261,8 +270,6 @@ static void uca_ufo_camera_grab(UcaCamera *camera, gpointer *data, GError **erro UcaUfoCameraPrivate *priv = UCA_UFO_CAMERA_GET_PRIVATE(camera); pcilib_event_id_t event_id; pcilib_event_info_t event_info; - pcilib_timeout_t timeout; - gdouble exposure_time; size_t err; const gsize size = SENSOR_WIDTH * SENSOR_HEIGHT * sizeof(guint16); @@ -270,10 +277,7 @@ static void uca_ufo_camera_grab(UcaCamera *camera, gpointer *data, GError **erro err = pcilib_trigger(priv->handle, PCILIB_EVENT0, 0, NULL); PCILIB_SET_ERROR(err, UCA_UFO_CAMERA_ERROR_TRIGGER); - g_object_get (G_OBJECT (camera), "exposure-time", &exposure_time, NULL); - timeout = ((pcilib_timeout_t) (exposure_time * 1000 + 50.0) * 1000); - - err = pcilib_get_next_event(priv->handle, timeout, &event_id, sizeof(pcilib_event_info_t), &event_info); + err = pcilib_get_next_event(priv->handle, priv->timeout, &event_id, sizeof(pcilib_event_info_t), &event_info); PCILIB_SET_ERROR(err, UCA_UFO_CAMERA_ERROR_NEXT_EVENT); if (*data == NULL) |