1 | /* $Id: DisplaySourceBitmapImpl.cpp 67914 2017-07-11 20:46:37Z vboxsync $ */
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2 | /** @file
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3 | * Bitmap of a guest screen implementation.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2014-2016 Oracle Corporation
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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 |
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18 | #define LOG_GROUP LOG_GROUP_MAIN_DISPLAYSOURCEBITMAP
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19 | #include "LoggingNew.h"
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20 |
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21 | #include "DisplayImpl.h"
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22 |
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23 | /*
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24 | * DisplaySourceBitmap implementation.
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25 | */
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26 | DEFINE_EMPTY_CTOR_DTOR(DisplaySourceBitmap)
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27 |
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28 | HRESULT DisplaySourceBitmap::FinalConstruct()
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29 | {
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30 | return BaseFinalConstruct();
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31 | }
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32 |
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33 | void DisplaySourceBitmap::FinalRelease()
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34 | {
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35 | uninit();
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36 |
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37 | BaseFinalRelease();
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38 | }
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39 |
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40 | HRESULT DisplaySourceBitmap::init(ComObjPtr<Display> pDisplay, unsigned uScreenId, DISPLAYFBINFO *pFBInfo)
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41 | {
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42 | LogFlowThisFunc(("[%u]\n", uScreenId));
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43 |
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44 | ComAssertRet(!pDisplay.isNull(), E_INVALIDARG);
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45 |
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46 | /* Enclose the state transition NotReady->InInit->Ready */
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47 | AutoInitSpan autoInitSpan(this);
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48 | AssertReturn(autoInitSpan.isOk(), E_FAIL);
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49 |
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50 | m.pDisplay = pDisplay;
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51 | m.uScreenId = uScreenId;
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52 | m.pFBInfo = pFBInfo;
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53 |
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54 | m.pu8Allocated = NULL;
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55 |
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56 | m.pu8Address = NULL;
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57 | m.ulWidth = 0;
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58 | m.ulHeight = 0;
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59 | m.ulBitsPerPixel = 0;
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60 | m.ulBytesPerLine = 0;
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61 | m.bitmapFormat = BitmapFormat_Opaque;
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62 |
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63 | int rc = initSourceBitmap(uScreenId, pFBInfo);
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64 |
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65 | if (RT_FAILURE(rc))
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66 | return E_FAIL;
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67 |
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68 | /* Confirm a successful initialization */
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69 | autoInitSpan.setSucceeded();
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70 |
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71 | return S_OK;
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72 | }
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73 |
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74 | void DisplaySourceBitmap::uninit()
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75 | {
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76 | /* Enclose the state transition Ready->InUninit->NotReady */
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77 | AutoUninitSpan autoUninitSpan(this);
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78 | if (autoUninitSpan.uninitDone())
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79 | return;
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80 |
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81 | LogFlowThisFunc(("[%u]\n", m.uScreenId));
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82 |
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83 | AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
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84 |
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85 | m.pDisplay.setNull();
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86 | RTMemFree(m.pu8Allocated);
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87 | }
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88 |
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89 | HRESULT DisplaySourceBitmap::getScreenId(ULONG *aScreenId)
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90 | {
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91 | HRESULT hr = S_OK;
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92 | AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
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93 |
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94 | *aScreenId = m.uScreenId;
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95 | return hr;
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96 | }
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97 |
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98 | HRESULT DisplaySourceBitmap::queryBitmapInfo(BYTE **aAddress,
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99 | ULONG *aWidth,
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100 | ULONG *aHeight,
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101 | ULONG *aBitsPerPixel,
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102 | ULONG *aBytesPerLine,
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103 | BitmapFormat_T *aBitmapFormat)
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104 | {
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105 | HRESULT hr = S_OK;
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106 | AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
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107 |
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108 | *aAddress = m.pu8Address;
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109 | *aWidth = m.ulWidth;
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110 | *aHeight = m.ulHeight;
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111 | *aBitsPerPixel = m.ulBitsPerPixel;
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112 | *aBytesPerLine = m.ulBytesPerLine;
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113 | *aBitmapFormat = m.bitmapFormat;
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114 |
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115 | return hr;
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116 | }
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117 |
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118 | int DisplaySourceBitmap::initSourceBitmap(unsigned aScreenId,
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119 | DISPLAYFBINFO *pFBInfo)
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120 | {
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121 | RT_NOREF(aScreenId);
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122 | int rc = VINF_SUCCESS;
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123 |
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124 | if (pFBInfo->w == 0 || pFBInfo->h == 0)
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125 | {
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126 | return VERR_NOT_SUPPORTED;
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127 | }
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128 |
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129 | BYTE *pAddress = NULL;
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130 | ULONG ulWidth = 0;
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131 | ULONG ulHeight = 0;
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132 | ULONG ulBitsPerPixel = 0;
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133 | ULONG ulBytesPerLine = 0;
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134 | BitmapFormat_T bitmapFormat = BitmapFormat_Opaque;
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135 |
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136 | if (pFBInfo->pu8FramebufferVRAM && pFBInfo->u16BitsPerPixel == 32 && !pFBInfo->fDisabled)
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137 | {
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138 | /* From VRAM. */
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139 | LogFunc(("%d from VRAM\n", aScreenId));
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140 | pAddress = pFBInfo->pu8FramebufferVRAM;
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141 | ulWidth = pFBInfo->w;
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142 | ulHeight = pFBInfo->h;
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143 | ulBitsPerPixel = pFBInfo->u16BitsPerPixel;
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144 | ulBytesPerLine = pFBInfo->u32LineSize;
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145 | bitmapFormat = BitmapFormat_BGR;
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146 | m.pu8Allocated = NULL;
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147 | }
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148 | else
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149 | {
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150 | /* Allocated byffer */
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151 | LogFunc(("%d allocated\n", aScreenId));
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152 | pAddress = NULL;
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153 | ulWidth = pFBInfo->w;
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154 | ulHeight = pFBInfo->h;
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155 | ulBitsPerPixel = 32;
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156 | ulBytesPerLine = ulWidth * 4;
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157 | bitmapFormat = BitmapFormat_BGR;
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158 |
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159 | m.pu8Allocated = (uint8_t *)RTMemAlloc(ulBytesPerLine * ulHeight);
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160 | if (m.pu8Allocated == NULL)
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161 | {
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162 | rc = VERR_NO_MEMORY;
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163 | }
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164 | else
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165 | {
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166 | pAddress = m.pu8Allocated;
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167 | }
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168 | }
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169 |
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170 | if (RT_SUCCESS(rc))
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171 | {
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172 | m.pu8Address = pAddress;
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173 | m.ulWidth = ulWidth;
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174 | m.ulHeight = ulHeight;
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175 | m.ulBitsPerPixel = ulBitsPerPixel;
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176 | m.ulBytesPerLine = ulBytesPerLine;
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177 | m.bitmapFormat = bitmapFormat;
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178 | if (pFBInfo->fDisabled)
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179 | {
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180 | RT_BZERO(pAddress, ulBytesPerLine * ulHeight);
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181 | }
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182 | }
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183 |
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184 | return rc;
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185 | }
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186 |
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187 | /* vi: set tabstop=4 shiftwidth=4 expandtab: */
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