| 1 | /* $Id:$ */
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| 2 | /** @file
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| 3 | * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Video.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2007-2009 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 18 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 19 | * additional information or have any questions.
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| 20 | */
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| 21 |
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| 22 |
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| 23 | /*******************************************************************************
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| 24 | * Header Files *
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| 25 | *******************************************************************************/
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| 26 | #include <iprt/assert.h>
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| 27 | #include <iprt/mem.h>
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| 28 | #include <iprt/string.h>
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| 29 | #include <VBox/log.h>
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| 30 | #include <VBox/HostServices/GuestPropertySvc.h> /* For Save and RetrieveVideoMode */
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| 31 |
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| 32 | #include "VBGLR3Internal.h"
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| 33 |
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| 34 | #define VIDEO_PROP_PREFIX "/VirtualBox/GuestAdd/Vbgl/Video/"
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| 35 |
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| 36 | /**
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| 37 | * Enable or disable video acceleration.
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| 38 | *
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| 39 | * @returns VBox status code.
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| 40 | *
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| 41 | * @param fEnable Pass zero to disable, any other value to enable.
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| 42 | */
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| 43 | VBGLR3DECL(int) VbglR3VideoAccelEnable(bool fEnable)
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| 44 | {
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| 45 | VMMDevVideoAccelEnable Req;
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| 46 | vmmdevInitRequest(&Req.header, VMMDevReq_VideoAccelEnable);
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| 47 | Req.u32Enable = fEnable;
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| 48 | Req.cbRingBuffer = VBVA_RING_BUFFER_SIZE;
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| 49 | Req.fu32Status = 0;
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| 50 | return vbglR3GRPerform(&Req.header);
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| 51 | }
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| 52 |
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| 53 |
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| 54 | /**
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| 55 | * Flush the video buffer.
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| 56 | *
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| 57 | * @returns VBox status code.
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| 58 | */
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| 59 | VBGLR3DECL(int) VbglR3VideoAccelFlush(void)
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| 60 | {
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| 61 | VMMDevVideoAccelFlush Req;
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| 62 | vmmdevInitRequest(&Req.header, VMMDevReq_VideoAccelFlush);
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| 63 | return vbglR3GRPerform(&Req.header);
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| 64 | }
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| 65 |
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| 66 |
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| 67 | /**
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| 68 | * Send mouse pointer shape information to the host.
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| 69 | *
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| 70 | * @returns VBox status code.
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| 71 | *
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| 72 | * @param fFlags Mouse pointer flags.
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| 73 | * @param xHot X coordinate of hot spot.
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| 74 | * @param yHot Y coordinate of hot spot.
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| 75 | * @param cx Pointer width.
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| 76 | * @param cy Pointer height.
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| 77 | * @param pvImg Pointer to the image data (can be NULL).
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| 78 | * @param cbImg Size of the image data pointed to by pvImg.
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| 79 | */
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| 80 | VBGLR3DECL(int) VbglR3SetPointerShape(uint32_t fFlags, uint32_t xHot, uint32_t yHot, uint32_t cx, uint32_t cy, const void *pvImg, size_t cbImg)
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| 81 | {
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| 82 | VMMDevReqMousePointer *pReq;
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| 83 | int rc = vbglR3GRAlloc((VMMDevRequestHeader **)&pReq, RT_OFFSETOF(VMMDevReqMousePointer, pointerData) + cbImg, VMMDevReq_SetPointerShape);
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| 84 | if (RT_SUCCESS(rc))
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| 85 | {
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| 86 | pReq->fFlags = fFlags;
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| 87 | pReq->xHot = xHot;
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| 88 | pReq->yHot = yHot;
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| 89 | pReq->width = cx;
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| 90 | pReq->height = cy;
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| 91 | if (pvImg)
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| 92 | memcpy(pReq->pointerData, pvImg, cbImg);
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| 93 |
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| 94 | rc = vbglR3GRPerform(&pReq->header);
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| 95 | vbglR3GRFree(&pReq->header);
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| 96 | if (RT_SUCCESS(rc))
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| 97 | rc = pReq->header.rc;
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| 98 | }
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| 99 | return rc;
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| 100 | }
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| 101 |
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| 102 |
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| 103 | /**
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| 104 | * Send mouse pointer shape information to the host.
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| 105 | * This version of the function accepts a request for clients that
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| 106 | * already allocate and manipulate the request structure directly.
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| 107 | *
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| 108 | * @returns VBox status code.
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| 109 | *
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| 110 | * @param pReq Pointer to the VMMDevReqMousePointer structure.
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| 111 | */
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| 112 | VBGLR3DECL(int) VbglR3SetPointerShapeReq(VMMDevReqMousePointer *pReq)
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| 113 | {
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| 114 | int rc = vbglR3GRPerform(&pReq->header);
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| 115 | if (RT_SUCCESS(rc))
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| 116 | rc = pReq->header.rc;
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| 117 | return rc;
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| 118 | }
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| 119 |
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| 120 |
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| 121 | /**
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| 122 | * Query the last display change request sent from the host to the guest.
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| 123 | *
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| 124 | * @returns iprt status value
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| 125 | * @param pcx Where to store the horizontal pixel resolution
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| 126 | * requested (a value of zero means do not change).
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| 127 | * @param pcy Where to store the vertical pixel resolution
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| 128 | * requested (a value of zero means do not change).
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| 129 | * @param pcBits Where to store the bits per pixel requested (a value
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| 130 | * of zero means do not change).
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| 131 | * @param iDisplay Where to store the display number the request was for
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| 132 | * - 0 for the primary display, 1 for the first
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| 133 | * secondary display, etc.
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| 134 | * @param fAck whether or not to acknowlege the newest request sent by
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| 135 | * the host. If this is set, the function will return the
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| 136 | * most recent host request, otherwise it will return the
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| 137 | * last request to be acknowleged.
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| 138 | *
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| 139 | */
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| 140 | VBGLR3DECL(int) VbglR3GetDisplayChangeRequest(uint32_t *pcx, uint32_t *pcy, uint32_t *pcBits, uint32_t *piDisplay, bool fAck)
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| 141 | {
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| 142 | VMMDevDisplayChangeRequest2 Req = { { 0 } };
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| 143 |
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| 144 | #ifndef VBOX_VBGLR3_XFREE86
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| 145 | AssertPtrReturn(pcx, VERR_INVALID_PARAMETER);
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| 146 | AssertPtrReturn(pcy, VERR_INVALID_PARAMETER);
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| 147 | AssertPtrReturn(pcBits, VERR_INVALID_PARAMETER);
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| 148 | AssertPtrReturn(piDisplay, VERR_INVALID_PARAMETER);
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| 149 | #endif
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| 150 | vmmdevInitRequest(&Req.header, VMMDevReq_GetDisplayChangeRequest2);
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| 151 | if (fAck)
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| 152 | Req.eventAck = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
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| 153 | int rc = vbglR3GRPerform(&Req.header);
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| 154 | if (RT_SUCCESS(rc))
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| 155 | rc = Req.header.rc;
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| 156 | if (RT_SUCCESS(rc))
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| 157 | {
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| 158 | *pcx = Req.xres;
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| 159 | *pcy = Req.yres;
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| 160 | *pcBits = Req.bpp;
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| 161 | *piDisplay = Req.display;
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| 162 | }
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| 163 | return rc;
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| 164 | }
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| 165 |
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| 166 |
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| 167 | /**
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| 168 | * Query the host as to whether it likes a specific video mode.
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| 169 | *
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| 170 | * @returns the result of the query
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| 171 | * @param cx the width of the mode being queried
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| 172 | * @param cy the height of the mode being queried
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| 173 | * @param cBits the bpp of the mode being queried
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| 174 | */
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| 175 | VBGLR3DECL(bool) VbglR3HostLikesVideoMode(uint32_t cx, uint32_t cy, uint32_t cBits)
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| 176 | {
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| 177 | bool fRc = true; /* If for some reason we can't contact the host then
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| 178 | * we like everything. */
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| 179 | int rc;
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| 180 | VMMDevVideoModeSupportedRequest req;
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| 181 |
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| 182 | vmmdevInitRequest(&req.header, VMMDevReq_VideoModeSupported);
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| 183 | req.width = cx;
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| 184 | req.height = cy;
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| 185 | req.bpp = cBits;
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| 186 | req.fSupported = true;
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| 187 | rc = vbglR3GRPerform(&req.header);
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| 188 | if (RT_SUCCESS(rc) && RT_SUCCESS(req.header.rc))
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| 189 | fRc = req.fSupported;
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| 190 | return fRc;
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| 191 | }
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| 192 |
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| 193 | /**
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| 194 | * Save video mode parameters to the registry.
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| 195 | *
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| 196 | * @returns iprt status value
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| 197 | * @param pszName the name to save the mode parameters under
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| 198 | * @param cx mode width
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| 199 | * @param cy mode height
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| 200 | * @param cBits bits per pixel for the mode
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| 201 | */
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| 202 | VBGLR3DECL(int) VbglR3SaveVideoMode(const char *pszName, uint32_t cx, uint32_t cy, uint32_t cBits)
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| 203 | {
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| 204 | #ifdef VBOX_WITH_GUEST_PROPS
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| 205 | using namespace guestProp;
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| 206 |
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| 207 | char szModeName[MAX_NAME_LEN];
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| 208 | char szModeParms[MAX_VALUE_LEN];
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| 209 | uint32_t u32ClientId = 0;
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| 210 | RTStrPrintf(szModeName, sizeof(szModeName), VIDEO_PROP_PREFIX"%s", pszName);
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| 211 | RTStrPrintf(szModeParms, sizeof(szModeParms), "%dx%dx%d", cx, cy, cBits);
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| 212 | int rc = VbglR3GuestPropConnect(&u32ClientId);
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| 213 | if (RT_SUCCESS(rc))
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| 214 | rc = VbglR3GuestPropWriteValue(u32ClientId, szModeName, szModeParms);
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| 215 | if (u32ClientId != 0)
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| 216 | VbglR3GuestPropDisconnect(u32ClientId); /* Return value ignored, because what can we do anyway? */
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| 217 | return rc;
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| 218 | #else /* VBOX_WITH_GUEST_PROPS not defined */
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| 219 | return VERR_NOT_IMPLEMENTED;
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| 220 | #endif /* VBOX_WITH_GUEST_PROPS not defined */
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| 221 | }
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| 222 |
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| 223 |
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| 224 | /**
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| 225 | * Retrieve video mode parameters from the guest property store.
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| 226 | *
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| 227 | * @returns iprt status value
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| 228 | * @param pszName the name under which the mode parameters are saved
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| 229 | * @param pcx where to store the mode width
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| 230 | * @param pcy where to store the mode height
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| 231 | * @param pcBits where to store the bits per pixel for the mode
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| 232 | */
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| 233 | VBGLR3DECL(int) VbglR3RetrieveVideoMode(const char *pszName, uint32_t *pcx, uint32_t *pcy, uint32_t *pcBits)
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| 234 | {
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| 235 | #ifdef VBOX_WITH_GUEST_PROPS
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| 236 | using namespace guestProp;
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| 237 |
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| 238 | /*
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| 239 | * First we retreive the video mode which is saved as a string in the
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| 240 | * guest property store.
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| 241 | */
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| 242 | /* The buffer for VbglR3GuestPropReadValue. If this is too small then
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| 243 | * something is wrong with the data stored in the property. */
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| 244 | char szModeParms[1024];
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| 245 | uint32_t u32ClientId = 0;
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| 246 | uint32_t cx, cy, cBits;
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| 247 |
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| 248 | int rc = VbglR3GuestPropConnect(&u32ClientId);
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| 249 | if (RT_SUCCESS(rc))
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| 250 | {
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| 251 | char szModeName[MAX_NAME_LEN];
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| 252 | RTStrPrintf(szModeName, sizeof(szModeName), VIDEO_PROP_PREFIX"%s", pszName);
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| 253 | /** @todo add a VbglR3GuestPropReadValueF/FV that does the RTStrPrintf for you. */
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| 254 | rc = VbglR3GuestPropReadValue(u32ClientId, szModeName, szModeParms,
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| 255 | sizeof(szModeParms), NULL);
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| 256 | }
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| 257 |
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| 258 | /*
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| 259 | * Now we convert the string returned to numeric values.
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| 260 | */
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| 261 | char *pszNext;
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| 262 | if (RT_SUCCESS(rc))
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| 263 | /* Extract the width from the string */
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| 264 | rc = RTStrToUInt32Ex(szModeParms, &pszNext, 10, &cx);
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| 265 | if ((rc != VWRN_TRAILING_CHARS) || (*pszNext != 'x'))
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| 266 | rc = VERR_PARSE_ERROR;
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| 267 | if (RT_SUCCESS(rc))
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| 268 | {
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| 269 | /* Extract the height from the string */
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| 270 | ++pszNext;
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| 271 | rc = RTStrToUInt32Ex(pszNext, &pszNext, 10, &cy);
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| 272 | }
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| 273 | if ((rc != VWRN_TRAILING_CHARS) || (*pszNext != 'x'))
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| 274 | rc = VERR_PARSE_ERROR;
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| 275 | if (RT_SUCCESS(rc))
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| 276 | {
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| 277 | /* Extract the bpp from the string */
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| 278 | ++pszNext;
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| 279 | rc = RTStrToUInt32Full(pszNext, 10, &cBits);
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| 280 | }
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| 281 | if (rc != VINF_SUCCESS)
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| 282 | rc = VERR_PARSE_ERROR;
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| 283 |
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| 284 | /*
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| 285 | * And clean up and return the values if we successfully obtained them.
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| 286 | */
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| 287 | if (u32ClientId != 0)
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| 288 | VbglR3GuestPropDisconnect(u32ClientId); /* Return value ignored, because what can we do anyway? */
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| 289 | if (RT_SUCCESS(rc))
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| 290 | {
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| 291 | *pcx = cx;
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| 292 | *pcy = cy;
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| 293 | *pcBits = cBits;
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| 294 | }
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| 295 | return rc;
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| 296 | #else /* VBOX_WITH_GUEST_PROPS not defined */
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| 297 | return VERR_NOT_IMPLEMENTED;
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| 298 | #endif /* VBOX_WITH_GUEST_PROPS not defined */
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| 299 | }
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