Changeset 53530 in vbox for trunk/src/VBox/Additions/common/VBoxVideo

Timestamp:

Dec 12, 2014 8:44:49 PM (10 years ago)

Author:

vboxsync

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

97271

Message:

Additions/common and Additions/x11: add support for getting video mode hints through the VGA device.

Location:

trunk/src/VBox/Additions/common/VBoxVideo

Files:

• HGSMIBase.cpp (modified) (1 diff)
• Modesetting.cpp (modified) (2 diffs)

trunk/src/VBox/Additions/common/VBoxVideo/HGSMIBase.cpp

@@ -235 +235 @@
         rc = VERR_NO_MEMORY;
     return rc;
+}
+
+
+/**
+ * Notify the host of HGSMI-related guest capabilities via an HGSMI command.
+ * @returns  IPRT status value.
+ * @returns  VERR_NOT_IMPLEMENTED  if the host does not support the command.
+ * @returns  VERR_NO_MEMORY        if a heap allocation fails.
+ * @param    pCtx                  the context of the guest heap to use.
+ * @param    fCaps                 the capabilities to report, see VBVACAPS.
+ */
+RTDECL(int) VBoxHGSMISendCapsInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx,
+                                  uint32_t fCaps)
+{
+    return vboxHGSMISendCapsInfo(pCtx, fCaps);
 }
 

trunk/src/VBox/Additions/common/VBoxVideo/Modesetting.cpp

@@ -25 +25 @@
 #include <iprt/asm.h>
 #include <iprt/log.h>
+
+#ifndef VBOX_GUESTR3XF86MOD
+# include <string.h>
+#endif
 
 /**
@@ -275 +279 @@
     }
 }
+
+/**
+ * Get most recent video mode hints.
+ * @param  pCtx      the context containing the heap to use
+ * @param  cScreens  the number of screens to query hints for, starting at 0.
+ * @param  pHints    array of VBVAMODEHINT structures for receiving the hints.
+ * @returns  iprt status code
+ * @returns  VERR_NO_MEMORY      HGSMI heap allocation failed.
+ * @returns  VERR_NOT_SUPPORTED  Host does not support this command.
+ */
+RTDECL(int) VBoxHGSMIGetModeHints(PHGSMIGUESTCOMMANDCONTEXT pCtx,
+                                  unsigned cScreens, VBVAMODEHINT *paHints)
+{
+    int rc;
+    AssertPtrReturn(paHints, VERR_INVALID_POINTER);
+    void *p = VBoxHGSMIBufferAlloc(pCtx,   sizeof(VBVAQUERYMODEHINTS)
+                                         + cScreens * sizeof(VBVAMODEHINT),
+                                   HGSMI_CH_VBVA, VBVA_QUERY_MODE_HINTS);
+    if (!p)
+    {
+        LogFunc(("HGSMIHeapAlloc failed\n"));
+        return VERR_NO_MEMORY;
+    }
+    else
+    {
+        VBVAQUERYMODEHINTS *pQuery   = (VBVAQUERYMODEHINTS *)p;
+
+        pQuery->cHintsQueried        = cScreens;
+        pQuery->cbHintStructureGuest = sizeof(VBVAMODEHINT);
+        pQuery->rc                   = VERR_NOT_SUPPORTED;
+
+        VBoxHGSMIBufferSubmit(pCtx, p);
+        rc = pQuery->rc;
+        if (RT_SUCCESS(rc))
+            memcpy(paHints, ((uint8_t *)p) + sizeof(VBVAQUERYMODEHINTS),
+                   cScreens * sizeof(VBVAMODEHINT));
+
+        VBoxHGSMIBufferFree(pCtx, p);
+    }
+    return rc;
+}