Changeset 13868

Timestamp:

11/05/08 15:34:45 (2 months ago)

Author:

vboxsync

Message:

hgcmsvc.h: some evil C++

Files:

• trunk/include/VBox/hgcmsvc.h (modified) (2 diffs)

trunk/include/VBox/hgcmsvc.h

@@ -34 +34 @@
-#include <VBox/cdefs.h>
-#include <VBox/types.h>
+#include <VBox/err.h>
-
-/** @todo proper comments. */
@@ -103 +104 @@
-        } pointer;
-    } u;
+#ifdef __cplusplus
+    /** Extract a uint32_t value from an HGCM parameter structure */
+    int getUInt32 (uint32_t *u32)
+    {
+        int rc = VINF_SUCCESS;
+        if (type != VBOX_HGCM_SVC_PARM_64BIT)
+            rc = VERR_INVALID_PARAMETER;
+        if (RT_SUCCESS(rc))
+            *u32 = u.uint32;
+        return rc;
+    }
+
+    /** Extract a uint64_t value from an HGCM parameter structure */
+    int getUInt64 (uint64_t *u64)
+    {
+        int rc = VINF_SUCCESS;
+        if (type != VBOX_HGCM_SVC_PARM_64BIT)
+            rc = VERR_INVALID_PARAMETER;
+        if (RT_SUCCESS(rc))
+            *u64 = u.uint64;
+        return rc;
+    }
+
+    /** Extract a pointer value from an HGCM parameter structure */
+    int getPointer (void **ppv, uint32_t *pcb)
+    {
+        if (type == VBOX_HGCM_SVC_PARM_PTR)
+        {
+            *ppv = u.pointer.addr;
+            *pcb = u.pointer.size;
+            return VINF_SUCCESS;
+        }
+
+        return VERR_INVALID_PARAMETER;
+    }
+
+    /** Extract a constant pointer value from an HGCM parameter structure */
+    int getPointer (const void **ppv, uint32_t *pcb)
+    {
+        if (type == VBOX_HGCM_SVC_PARM_PTR)
+        {
+            *ppv = u.pointer.addr;
+            *pcb = u.pointer.size;
+            return VINF_SUCCESS;
+        }
+
+        return VERR_INVALID_PARAMETER;
+    }
+
+    /** Set a uint32_t value to an HGCM parameter structure */
+    void setUInt32(uint32_t u32)
+    {
+        type = VBOX_HGCM_SVC_PARM_32BIT;
+        u.uint32 = u32;
+    }
+
+    /** Set a uint64_t value to an HGCM parameter structure */
+    void setUInt64(uint64_t u64)
+    {
+        type = VBOX_HGCM_SVC_PARM_64BIT;
+        u.uint64 = u64;
+    }
+
+    /** Set a pointer value to an HGCM parameter structure */
+    void setPointer(void *pv, uint32_t cb)
+    {
+        type = VBOX_HGCM_SVC_PARM_PTR;
+        u.pointer.addr = pv;
+        u.pointer.size = cb;
+    }
+
+    VBOXHGCMSVCPARM() : type(VBOX_HGCM_SVC_PARM_INVALID) {}
+#endif
-} VBOXHGCMSVCPARM;
-