Changeset 99945 in vbox for trunk/src/VBox/Devices/PC

Timestamp:

May 23, 2023 9:29:27 PM (21 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

157602

Message:

Devices/PC/DevQemuFwCfg: Add screenshot support for the RAM based framebuffer, bugref:10431

File:

• trunk/src/VBox/Devices/PC/DevQemuFwCfg.cpp (modified) (1 diff)

trunk/src/VBox/Devices/PC/DevQemuFwCfg.cpp

@@ -1678 +1678 @@
                                                             uint32_t *pcx, uint32_t *pcy)
 {
-    RT_NOREF(pInterface, ppbData, pcbData, pcx, pcy);
-    return VERR_NOT_SUPPORTED;
+    PDEVQEMUFWCFG pThis = RT_FROM_MEMBER(pInterface, DEVQEMUFWCFG, IPortRamfb);
+
+    LogFlowFunc(("\n"));
+
+    int const rcLock = PDMDevHlpCritSectEnter(pThis->pDevIns, &pThis->CritSectRamfb, VERR_SEM_BUSY);
+    PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pThis->pDevIns, &pThis->CritSectRamfb, rcLock);
+
+    int rc;
+    size_t cbData = pThis->RamfbCfg.cHeight * pThis->RamfbCfg.cbStride;
+    if (   pThis->RamfbCfg.GCPhysRamfbBase
+        && cbData)
+    {
+        uint8_t *pbData = (uint8_t *)RTMemAlloc(cbData);
+        if (pbData)
+        {
+            rc = PDMDevHlpPhysReadUser(pThis->pDevIns, pThis->RamfbCfg.GCPhysRamfbBase, pbData, cbData);
+            if (RT_SUCCESS(rc))
+            {
+                *ppbData = pbData;
+                *pcbData = cbData;
+                *pcx     = pThis->RamfbCfg.cWidth;
+                *pcy     = pThis->RamfbCfg.cHeight;
+            }
+        }
+        else
+            rc = VERR_NO_MEMORY;
+    }
+    else
+        rc = VERR_NOT_SUPPORTED;
+
+    PDMDevHlpCritSectLeave(pThis->pDevIns, &pThis->CritSectRamfb);
+    return rc;
 }