Prepare for frame grabber abstraction

1 files changed, 46 insertions, 0 deletions

diff --git a/src/uca-grabber.h b/src/uca-grabber.h
new file mode 100644
index 0000000..b01f453
--- /dev/null
+++ b/src/uca-grabber.h
@@ -0,0 +1,46 @@
+#ifndef __UNIFIED_CAMERA_ACCESS_GRABBER_H
+#define __UNIFIED_CAMERA_ACCESS_GRABBER_H
+
+/*
+ * --- virtual methods --------------------------------------------------------
+ */
+
+/**
+ * \brief Camera probing and initialization
+ * \return UCA_ERR_INIT_NOT_FOUND if camera is not found or could not be initialized
+ */
+typedef uint32_t (*uca_grabber_init) (struct uca_grabber_t **grabber);
+
+/**
+ * \brief Free camera resouces
+ */
+typedef uint32_t (*uca_grabber_destroy) (struct uca_grabber_t *grabber);
+
+/**
+ * \brief Set a property
+ * \param[in] property_name Name of the property as defined in XXX
+ * \return UCA_ERR_PROP_INVALID if property is not supported on the camera or
+ * UCA_ERR_PROP_VALUE_OUT_OF_RANGE if value cannot be set.
+ */
+typedef uint32_t (*uca_grabber_set_property) (struct uca_grabber_t *grabber, enum uca_property_ids property, void *data);
+
+/**
+ * \brief Set a property
+ * \param[in] property_name Name of the property as defined in XXX
+ * \return UCA_ERR_PROP_INVALID if property is not supported on the camera
+ */
+typedef uint32_t (*uca_grabber_get_property) (struct uca_grabber_t *grabber, enum uca_property_ids property, void *data);
+
+
+struct uca_grabber_t {
+    struct uca_grabber_t    *next;
+
+    /* Function pointers to grabber-specific methods */
+    uca_grabber_set_property set_property;
+    uca_grabber_get_property get_property;
+
+    /* Private */
+    void *user;
+};
+
+#endif