Add simple grabber only accessed using framegrabber

1 files changed, 150 insertions, 0 deletions

diff --git a/src/cameras/simple.c b/src/cameras/simple.c
new file mode 100644
index 0000000..e6cc233
--- /dev/null
+++ b/src/cameras/simple.c
@@ -0,0 +1,150 @@
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include "uca.h"
+#include "uca-cam.h"
+#include "uca-grabber.h"
+
+
+static uint32_t uca_simple_set_property(struct uca_camera_priv *cam, enum uca_property_ids property, void *data)
+{
+    struct uca_grabber_priv *grabber = cam->grabber;
+    int err = UCA_NO_ERROR;
+
+    /* We try to set the property on the grabber. If it returns "invalid", we
+     * also try it via the PF SDK. Else, there was a more serious error.
+     *
+     * FIXME: This is actually not that good for cases where only the grabber
+     * should set a certain property and the camera itself is not able to do so. */
+    err = grabber->set_property(grabber, property, data);
+    if (((err & UCA_ERR_MASK_CODE) == UCA_ERR_INVALID) || (err == UCA_NO_ERROR))
+        err = UCA_ERR_CAMERA | UCA_ERR_PROP;
+    else
+        return err;
+
+    return UCA_NO_ERROR;
+}
+
+
+static uint32_t uca_simple_get_property(struct uca_camera_priv *cam, enum uca_property_ids property, void *data, size_t num)
+{
+    struct uca_grabber_priv *grabber = cam->grabber;
+    uint32_t value32 = 0;
+
+    /* Handle all special cases */
+    switch (property) {
+        case UCA_PROP_NAME:
+            strncpy((char *) data, "Simple Framegrabber Access", num);
+            break;
+
+        case UCA_PROP_WIDTH:
+            grabber->get_property(grabber, UCA_PROP_WIDTH, &value32);
+            uca_set_void(data, uint32_t, value32);
+            break;
+
+        case UCA_PROP_HEIGHT:
+            grabber->get_property(grabber, UCA_PROP_HEIGHT, &value32);
+            uca_set_void(data, uint32_t, value32);
+            break;
+
+        case UCA_PROP_X_OFFSET:
+            grabber->get_property(grabber, UCA_PROP_X_OFFSET, &value32);
+            uca_set_void(data, uint32_t, value32);
+            break;
+
+        case UCA_PROP_Y_OFFSET:
+            grabber->get_property(grabber, UCA_PROP_Y_OFFSET, &value32);
+            uca_set_void(data, uint32_t, value32);
+            break;
+
+        case UCA_PROP_BITDEPTH:
+            uca_set_void(data, uint32_t, 8);
+            return UCA_NO_ERROR;
+
+        default:
+            break;
+    }
+
+    /* Try to get the property via frame grabber */
+    return cam->grabber->get_property(cam->grabber, property, data);
+}
+
+static uint32_t uca_simple_start_recording(struct uca_camera_priv *cam)
+{
+    return cam->grabber->acquire(cam->grabber, -1);
+}
+
+static uint32_t uca_simple_stop_recording(struct uca_camera_priv *cam)
+{
+    return cam->grabber->stop_acquire(cam->grabber);
+}
+
+static uint32_t uca_simple_trigger(struct uca_camera_priv *cam)
+{
+    return cam->grabber->trigger(cam->grabber);
+}
+
+static uint32_t uca_simple_grab(struct uca_camera_priv *cam, char *buffer, void *metadata)
+{
+    uint16_t *frame;
+    uint32_t err = cam->grabber->grab(cam->grabber, (void **) &frame, &cam->current_frame);
+    if (err != UCA_NO_ERROR)
+        return err;
+
+    memcpy(buffer, frame, cam->frame_width*cam->frame_height);
+    return UCA_NO_ERROR;
+}
+
+static uint32_t uca_simple_register_callback(struct uca_camera_priv *cam, uca_cam_grab_callback callback, void *user)
+{
+    if (cam->callback == NULL) {
+        cam->callback = callback;
+        cam->callback_user = user;
+        return cam->grabber->register_callback(cam->grabber, callback, NULL, user);
+    }
+    return UCA_ERR_CAMERA | UCA_ERR_CALLBACK | UCA_ERR_ALREADY_REGISTERED;
+}
+
+static uint32_t uca_simple_destroy(struct uca_camera_priv *cam)
+{
+    return UCA_NO_ERROR;
+}
+
+uint32_t uca_simple_init(struct uca_camera_priv **cam, struct uca_grabber_priv *grabber)
+{
+    if (grabber == NULL)
+        return UCA_ERR_CAMERA | UCA_ERR_INIT | UCA_ERR_NOT_FOUND;
+
+    struct uca_camera_priv *uca = uca_cam_new();
+    uca->grabber = grabber;
+    uca->grabber->synchronous = false;
+
+    /* Camera found, set function pointers... */
+    uca->destroy = &uca_simple_destroy;
+    uca->set_property = &uca_simple_set_property;
+    uca->get_property = &uca_simple_get_property;
+    uca->start_recording = &uca_simple_start_recording;
+    uca->stop_recording = &uca_simple_stop_recording;
+    uca->trigger = &uca_simple_trigger;
+    uca->grab = &uca_simple_grab;
+    uca->register_callback = &uca_simple_register_callback;
+
+    /* Prepare frame grabber for recording */
+    int val = UCA_CL_8BIT_FULL_8;
+    grabber->set_property(grabber, UCA_GRABBER_CAMERALINK_TYPE, &val);
+
+    val = UCA_FORMAT_GRAY8;
+    grabber->set_property(grabber, UCA_GRABBER_FORMAT, &val);
+
+    val = UCA_TRIGGER_AUTO;
+    grabber->set_property(grabber, UCA_GRABBER_TRIGGER_MODE, &val);
+
+    grabber->get_property(grabber, UCA_PROP_WIDTH, &uca->frame_width);
+    grabber->get_property(grabber, UCA_PROP_HEIGHT, &uca->frame_height);
+
+    uca->state = UCA_CAM_CONFIGURABLE;
+    *cam = uca;
+
+    return UCA_NO_ERROR;
+}