Fix grabber allocation and callback registration for me4 and pf

1 files changed, 14 insertions, 10 deletions

diff --git a/test/grab.c b/test/grab.c
index 3e429ed..34b90c8 100644
--- a/test/grab.c
+++ b/test/grab.c
@@ -4,6 +4,10 @@
 #include "uca.h"
 #include "uca-cam.h"
 
+#define handle_error(errno) {if ((errno) != UCA_NO_ERROR) printf("error at <%s:%i>\n", \
+    __FILE__, __LINE__);}
+
+
 int main(int argc, char *argv[])
 {
     struct uca *u = uca_init(NULL);
@@ -15,24 +19,24 @@ int main(int argc, char *argv[])
     /* take first camera */
     struct uca_camera *cam = u->cameras;
 
-    uint32_t val = 1;
-    cam->set_property(cam, UCA_PROP_EXPOSURE, &val);
+    uint32_t val = 2000;
+    handle_error(cam->set_property(cam, UCA_PROP_EXPOSURE, &val));
     val = 0;
-    cam->set_property(cam, UCA_PROP_DELAY, &val);
+    handle_error(cam->set_property(cam, UCA_PROP_DELAY, &val));
 
     uint32_t width, height, bits;
-    cam->get_property(cam, UCA_PROP_WIDTH, &width, 0);
-    cam->get_property(cam, UCA_PROP_HEIGHT, &height, 0);
-    cam->get_property(cam, UCA_PROP_BITDEPTH, &bits, 0);
+    handle_error(cam->get_property(cam, UCA_PROP_WIDTH, &width, 0));
+    handle_error(cam->get_property(cam, UCA_PROP_HEIGHT, &height, 0));
+    handle_error(cam->get_property(cam, UCA_PROP_BITDEPTH, &bits, 0));
 
-    uca_cam_alloc(cam, 10);
+    handle_error(uca_cam_alloc(cam, 10));
 
     const int pixel_size = bits == 8 ? 1 : 2;
     uint16_t *buffer = (uint16_t *) malloc(width * height * pixel_size);
 
-    cam->start_recording(cam);
-    cam->grab(cam, (char *) buffer, NULL);
-    cam->stop_recording(cam);
+    handle_error(cam->start_recording(cam));
+    handle_error(cam->grab(cam, (char *) buffer, NULL));
+    handle_error(cam->stop_recording(cam));
     uca_destroy(u);
 
     FILE *fp = fopen("out.raw", "wb");