Fix me4 callback grabbing

1 files changed, 26 insertions, 11 deletions

diff --git a/test/grab-async.c b/test/grab-async.c
index 1e0a90b..5f3694e 100644
--- a/test/grab-async.c
+++ b/test/grab-async.c
@@ -5,9 +5,24 @@
 #include "uca.h"
 #include "uca-cam.h"
 
+struct image_props {
+    uint32_t width;
+    uint32_t height;
+    uint32_t bits;
+};
+
 void grab_callback(uint32_t image_number, void *buffer, void *meta_data, void *user)
 {
-    printf("got picture number %i\n", image_number);
+    struct image_props *props = (struct image_props *) user;
+    const int pixel_size = props->bits == 8 ? 1 : 2;
+    char filename[256];
+
+    sprintf(filename, "out-%04i.raw", image_number);
+    FILE *fp = fopen(filename, "wb");
+    fwrite(buffer, props->width * props->height, pixel_size, fp);
+    fclose(fp);
+
+    printf("grabbed picture %i at %p (%ix%i @ %i bits)\n", image_number, buffer, props->width, props->height, props->bits);
 }
 
 int main(int argc, char *argv[])
@@ -21,25 +36,25 @@ int main(int argc, char *argv[])
     /* take first camera */
     struct uca_camera *cam = u->cameras;
 
-    uint32_t val = 1;
+    uint32_t val = 5000;
     cam->set_property(cam, UCA_PROP_EXPOSURE, &val);
     val = 0;
     cam->set_property(cam, UCA_PROP_DELAY, &val);
-    val = 10;
-    cam->set_property(cam, UCA_PROP_FRAMERATE, &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);
+    struct image_props props;
+    cam->get_property(cam, UCA_PROP_WIDTH, &props.width, 0);
+    cam->get_property(cam, UCA_PROP_HEIGHT, &props.height, 0);
+    cam->get_property(cam, UCA_PROP_BITDEPTH, &props.bits, 0);
 
     uca_cam_alloc(cam, 10);
 
-    cam->register_callback(cam, &grab_callback, NULL);
+    cam->register_callback(cam, &grab_callback, &props);
     cam->start_recording(cam);
-    printf("waiting for 5 seconds\n");
-    sleep(5);
+    printf("grabbing for 2 seconds\n");
+    sleep(2);
     cam->stop_recording(cam);
+    printf("done\n");
+    fflush(stdout);
 
     uca_destroy(u);
     return 0;