Imported Upstream version 20160322upstream/20160322

1 files changed, 202 insertions, 0 deletions

diff --git a/target_arm64/usr/include/xorg/dbestruct.h b/target_arm64/usr/include/xorg/dbestruct.h
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+/******************************************************************************
+ * 
+ * Copyright (c) 1994, 1995  Hewlett-Packard Company
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL HEWLETT-PACKARD COMPANY BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ * Except as contained in this notice, the name of the Hewlett-Packard
+ * Company shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the Hewlett-Packard Company.
+ * 
+ *     Header file for DIX-related DBE
+ *
+ *****************************************************************************/
+
+#ifndef DBE_STRUCT_H
+#define DBE_STRUCT_H
+
+/* INCLUDES */
+
+#define NEED_DBE_PROTOCOL
+#include <X11/extensions/dbeproto.h>
+#include "windowstr.h"
+#include "privates.h"
+
+typedef struct {
+    VisualID visual;            /* one visual ID that supports double-buffering */
+    int depth;                  /* depth of visual in bits                      */
+    int perflevel;              /* performance level of visual                  */
+} XdbeVisualInfo;
+
+typedef struct {
+    int count;                  /* number of items in visual_depth   */
+    XdbeVisualInfo *visinfo;    /* list of visuals & depths for scrn */
+} XdbeScreenVisualInfo;
+
+/* DEFINES */
+
+#define DBE_SCREEN_PRIV(pScreen) ((DbeScreenPrivPtr) \
+    dixLookupPrivate(&(pScreen)->devPrivates, dbeScreenPrivKey))
+
+#define DBE_SCREEN_PRIV_FROM_DRAWABLE(pDrawable) \
+    DBE_SCREEN_PRIV((pDrawable)->pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_WINDOW_PRIV(pDbeWindowPriv) \
+    DBE_SCREEN_PRIV((pDbeWindowPriv)->pWindow->drawable.pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_WINDOW(pWindow) \
+    DBE_SCREEN_PRIV((pWindow)->drawable.pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_PIXMAP(pPixmap) \
+    DBE_SCREEN_PRIV((pPixmap)->drawable.pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_GC(pGC)\
+    DBE_SCREEN_PRIV((pGC)->pScreen)
+
+#define DBE_WINDOW_PRIV(pWin) ((DbeWindowPrivPtr) \
+    dixLookupPrivate(&(pWin)->devPrivates, dbeWindowPrivKey))
+
+/* Initial size of the buffer ID array in the window priv. */
+#define DBE_INIT_MAX_IDS	2
+
+/* Reallocation increment for the buffer ID array. */
+#define DBE_INCR_MAX_IDS	4
+
+/* Marker for free elements in the buffer ID array. */
+#define DBE_FREE_ID_ELEMENT	0
+
+/* TYPEDEFS */
+
+/* Record used to pass swap information between DIX and DDX swapping
+ * procedures.
+ */
+typedef struct _DbeSwapInfoRec {
+    WindowPtr pWindow;
+    unsigned char swapAction;
+
+} DbeSwapInfoRec, *DbeSwapInfoPtr;
+
+/*
+ ******************************************************************************
+ ** Per-window data
+ ******************************************************************************
+ */
+
+typedef struct _DbeWindowPrivRec {
+    /* A pointer to the window with which the DBE window private (buffer) is
+     * associated.
+     */
+    WindowPtr pWindow;
+
+    /* Last known swap action for this buffer.  Legal values for this field
+     * are XdbeUndefined, XdbeBackground, XdbeUntouched, and XdbeCopied.
+     */
+    unsigned char swapAction;
+
+    /* Last known buffer size.
+     */
+    unsigned short width, height;
+
+    /* Coordinates used for static gravity when the window is positioned.
+     */
+    short x, y;
+
+    /* Number of XIDs associated with this buffer.
+     */
+    int nBufferIDs;
+
+    /* Capacity of the current buffer ID array, IDs. */
+    int maxAvailableIDs;
+
+    /* Pointer to the array of buffer IDs.  This initially points to initIDs.
+     * When the static limit of the initIDs array is reached, the array is
+     * reallocated and this pointer is set to the new array instead of initIDs.
+     */
+    XID *IDs;
+
+    /* Initial array of buffer IDs.  We are defining the XID array within the
+     * window priv to optimize for data locality.  In most cases, only one
+     * buffer will be associated with a window.  Having the array declared
+     * here can prevent us from accessing the data in another memory page,
+     * possibly resulting in a page swap and loss of performance.  Initially we
+     * will use this array to store buffer IDs.  For situations where we have
+     * more IDs than can fit in this static array, we will allocate a larger
+     * array to use, possibly suffering a performance loss. 
+     */
+    XID initIDs[DBE_INIT_MAX_IDS];
+
+    /* Pointer to a drawable that contains the contents of the back buffer.
+     */
+    PixmapPtr pBackBuffer;
+
+    /* Pointer to a drawable that contains the contents of the front buffer.
+     * This pointer is only used for the XdbeUntouched swap action.  For that
+     * swap action, we need to copy the front buffer (window) contents into
+     * this drawable, copy the contents of current back buffer drawable (the
+     * back buffer) into the window, swap the front and back drawable pointers,
+     * and then swap the drawable/resource associations in the resource
+     * database.
+     */
+    PixmapPtr pFrontBuffer;
+
+    /* Device-specific private information.
+     */
+    PrivateRec *devPrivates;
+
+} DbeWindowPrivRec, *DbeWindowPrivPtr;
+
+/*
+ ******************************************************************************
+ ** Per-screen data
+ ******************************************************************************
+ */
+
+typedef struct _DbeScreenPrivRec {
+    /* Wrapped functions
+     * It is the responsibilty of the DDX layer to wrap PositionWindow().
+     * DbeExtensionInit wraps DestroyWindow().
+     */
+    PositionWindowProcPtr PositionWindow;
+    DestroyWindowProcPtr DestroyWindow;
+
+    /* Per-screen DIX routines */
+    Bool (*SetupBackgroundPainter) (WindowPtr /*pWin */ ,
+                                    GCPtr       /*pGC */
+        );
+
+    /* Per-screen DDX routines */
+    Bool (*GetVisualInfo) (ScreenPtr /*pScreen */ ,
+                           XdbeScreenVisualInfo *       /*pVisInfo */
+        );
+    int (*AllocBackBufferName) (WindowPtr /*pWin */ ,
+                                XID /*bufId */ ,
+                                int     /*swapAction */
+        );
+    int (*SwapBuffers) (ClientPtr /*client */ ,
+                        int * /*pNumWindows */ ,
+                        DbeSwapInfoPtr  /*swapInfo */
+        );
+    void (*WinPrivDelete) (DbeWindowPrivPtr /*pDbeWindowPriv */ ,
+                           XID  /*bufId */
+        );
+} DbeScreenPrivRec, *DbeScreenPrivPtr;
+
+#endif                          /* DBE_STRUCT_H */