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/* $Id: DisplaySourceBitmapImpl.cpp $ */
/** @file
* Bitmap of a guest screen implementation.
*/
/*
* Copyright (C) 2014-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#define LOG_GROUP LOG_GROUP_MAIN_DISPLAYSOURCEBITMAP
#include "LoggingNew.h"
#include "DisplayImpl.h"
/*
* DisplaySourceBitmap implementation.
*/
DEFINE_EMPTY_CTOR_DTOR(DisplaySourceBitmap)
HRESULT DisplaySourceBitmap::FinalConstruct()
{
return BaseFinalConstruct();
}
void DisplaySourceBitmap::FinalRelease()
{
uninit();
BaseFinalRelease();
}
HRESULT DisplaySourceBitmap::init(ComObjPtr<Display> pDisplay, unsigned uScreenId, DISPLAYFBINFO *pFBInfo)
{
LogFlowThisFunc(("[%u]\n", uScreenId));
ComAssertRet(!pDisplay.isNull(), E_INVALIDARG);
/* Enclose the state transition NotReady->InInit->Ready */
AutoInitSpan autoInitSpan(this);
AssertReturn(autoInitSpan.isOk(), E_FAIL);
m.pDisplay = pDisplay;
m.uScreenId = uScreenId;
m.pFBInfo = pFBInfo;
m.pu8Allocated = NULL;
m.pu8Address = NULL;
m.ulWidth = 0;
m.ulHeight = 0;
m.ulBitsPerPixel = 0;
m.ulBytesPerLine = 0;
m.bitmapFormat = BitmapFormat_Opaque;
int vrc = initSourceBitmap(uScreenId, pFBInfo);
if (RT_FAILURE(vrc))
return E_FAIL;
/* Confirm a successful initialization */
autoInitSpan.setSucceeded();
return S_OK;
}
void DisplaySourceBitmap::uninit()
{
/* Enclose the state transition Ready->InUninit->NotReady */
AutoUninitSpan autoUninitSpan(this);
if (autoUninitSpan.uninitDone())
return;
LogFlowThisFunc(("[%u]\n", m.uScreenId));
AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
m.pDisplay.setNull();
RTMemFree(m.pu8Allocated);
}
HRESULT DisplaySourceBitmap::getScreenId(ULONG *aScreenId)
{
HRESULT hrc = S_OK;
AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
*aScreenId = m.uScreenId;
return hrc;
}
HRESULT DisplaySourceBitmap::queryBitmapInfo(BYTE **aAddress,
ULONG *aWidth,
ULONG *aHeight,
ULONG *aBitsPerPixel,
ULONG *aBytesPerLine,
BitmapFormat_T *aBitmapFormat)
{
HRESULT hrc = S_OK;
AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
*aAddress = m.pu8Address;
*aWidth = m.ulWidth;
*aHeight = m.ulHeight;
*aBitsPerPixel = m.ulBitsPerPixel;
*aBytesPerLine = m.ulBytesPerLine;
*aBitmapFormat = m.bitmapFormat;
return hrc;
}
int DisplaySourceBitmap::initSourceBitmap(unsigned aScreenId,
DISPLAYFBINFO *pFBInfo)
{
RT_NOREF(aScreenId);
int vrc = VINF_SUCCESS;
if (pFBInfo->w == 0 || pFBInfo->h == 0)
{
return VERR_NOT_SUPPORTED;
}
BYTE *pAddress = NULL;
ULONG ulWidth = 0;
ULONG ulHeight = 0;
ULONG ulBitsPerPixel = 0;
ULONG ulBytesPerLine = 0;
BitmapFormat_T bitmapFormat = BitmapFormat_Opaque;
if (pFBInfo->pu8FramebufferVRAM && pFBInfo->u16BitsPerPixel == 32 && !pFBInfo->fDisabled)
{
/* From VRAM. */
LogFunc(("%d from VRAM\n", aScreenId));
pAddress = pFBInfo->pu8FramebufferVRAM;
ulWidth = pFBInfo->w;
ulHeight = pFBInfo->h;
ulBitsPerPixel = pFBInfo->u16BitsPerPixel;
ulBytesPerLine = pFBInfo->u32LineSize;
bitmapFormat = BitmapFormat_BGR;
m.pu8Allocated = NULL;
}
else
{
/* Allocated byffer */
LogFunc(("%d allocated\n", aScreenId));
pAddress = NULL;
ulWidth = pFBInfo->w;
ulHeight = pFBInfo->h;
ulBitsPerPixel = 32;
ulBytesPerLine = ulWidth * 4;
bitmapFormat = BitmapFormat_BGR;
m.pu8Allocated = (uint8_t *)RTMemAlloc(ulBytesPerLine * ulHeight);
if (m.pu8Allocated == NULL)
{
vrc = VERR_NO_MEMORY;
}
else
{
pAddress = m.pu8Allocated;
}
}
if (RT_SUCCESS(vrc))
{
m.pu8Address = pAddress;
m.ulWidth = ulWidth;
m.ulHeight = ulHeight;
m.ulBitsPerPixel = ulBitsPerPixel;
m.ulBytesPerLine = ulBytesPerLine;
m.bitmapFormat = bitmapFormat;
if (pFBInfo->fDisabled)
{
RT_BZERO(pAddress, ulBytesPerLine * ulHeight);
}
}
return vrc;
}
/* vi: set tabstop=4 shiftwidth=4 expandtab: */
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