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/* $Id: RecordingUtils.h $ */
/** @file
* Recording utility header.
*/
/*
* Copyright (C) 2012-2023 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
*/
#ifndef MAIN_INCLUDED_RecordingUtils_h
#define MAIN_INCLUDED_RecordingUtils_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include "RecordingInternals.h"
/**
* Iterator class for running through a BGRA32 image buffer and converting
* it to RGB.
*/
class ColorConvBGRA32Iter
{
private:
enum { PIX_SIZE = 4 };
public:
ColorConvBGRA32Iter(unsigned aWidth, unsigned aHeight, uint8_t *aBuf)
{
mPos = 0;
mSize = aWidth * aHeight * PIX_SIZE;
mBuf = aBuf;
}
/**
* Convert the next pixel to RGB.
*
* @returns true on success, false if we have reached the end of the buffer
* @param aRed where to store the red value.
* @param aGreen where to store the green value.
* @param aBlue where to store the blue value.
*/
bool getRGB(unsigned *aRed, unsigned *aGreen, unsigned *aBlue)
{
bool rc = false;
if (mPos + PIX_SIZE <= mSize)
{
*aRed = mBuf[mPos + 2];
*aGreen = mBuf[mPos + 1];
*aBlue = mBuf[mPos ];
mPos += PIX_SIZE;
rc = true;
}
return rc;
}
/**
* Skip forward by a certain number of pixels.
*
* @param aPixels How many pixels to skip.
*/
void skip(unsigned aPixels)
{
mPos += PIX_SIZE * aPixels;
}
private:
/** Size of the picture buffer. */
unsigned mSize;
/** Current position in the picture buffer. */
unsigned mPos;
/** Address of the picture buffer. */
uint8_t *mBuf;
};
/**
* Iterator class for running through an BGR24 image buffer and converting
* it to RGB.
*/
class ColorConvBGR24Iter
{
private:
enum { PIX_SIZE = 3 };
public:
ColorConvBGR24Iter(unsigned aWidth, unsigned aHeight, uint8_t *aBuf)
{
mPos = 0;
mSize = aWidth * aHeight * PIX_SIZE;
mBuf = aBuf;
}
/**
* Convert the next pixel to RGB.
*
* @returns true on success, false if we have reached the end of the buffer.
* @param aRed where to store the red value.
* @param aGreen where to store the green value.
* @param aBlue where to store the blue value.
*/
bool getRGB(unsigned *aRed, unsigned *aGreen, unsigned *aBlue)
{
bool rc = false;
if (mPos + PIX_SIZE <= mSize)
{
*aRed = mBuf[mPos + 2];
*aGreen = mBuf[mPos + 1];
*aBlue = mBuf[mPos ];
mPos += PIX_SIZE;
rc = true;
}
return rc;
}
/**
* Skip forward by a certain number of pixels.
*
* @param aPixels How many pixels to skip.
*/
void skip(unsigned aPixels)
{
mPos += PIX_SIZE * aPixels;
}
private:
/** Size of the picture buffer. */
unsigned mSize;
/** Current position in the picture buffer. */
unsigned mPos;
/** Address of the picture buffer. */
uint8_t *mBuf;
};
/**
* Iterator class for running through an BGR565 image buffer and converting
* it to RGB.
*/
class ColorConvBGR565Iter
{
private:
enum { PIX_SIZE = 2 };
public:
ColorConvBGR565Iter(unsigned aWidth, unsigned aHeight, uint8_t *aBuf)
{
mPos = 0;
mSize = aWidth * aHeight * PIX_SIZE;
mBuf = aBuf;
}
/**
* Convert the next pixel to RGB.
*
* @returns true on success, false if we have reached the end of the buffer.
* @param aRed Where to store the red value.
* @param aGreen where to store the green value.
* @param aBlue where to store the blue value.
*/
bool getRGB(unsigned *aRed, unsigned *aGreen, unsigned *aBlue)
{
bool rc = false;
if (mPos + PIX_SIZE <= mSize)
{
unsigned uFull = (((unsigned) mBuf[mPos + 1]) << 8)
| ((unsigned) mBuf[mPos]);
*aRed = (uFull >> 8) & ~7;
*aGreen = (uFull >> 3) & ~3 & 0xff;
*aBlue = (uFull << 3) & ~7 & 0xff;
mPos += PIX_SIZE;
rc = true;
}
return rc;
}
/**
* Skip forward by a certain number of pixels.
*
* @param aPixels How many pixels to skip.
*/
void skip(unsigned aPixels)
{
mPos += PIX_SIZE * aPixels;
}
private:
/** Size of the picture buffer. */
unsigned mSize;
/** Current position in the picture buffer. */
unsigned mPos;
/** Address of the picture buffer. */
uint8_t *mBuf;
};
int RecordingUtilsRGBToYUV(RECORDINGPIXELFMT enmPixelFormat,
uint8_t *paDst, uint32_t uDstWidth, uint32_t uDstHeight,
uint8_t *paSrc, uint32_t uSrcWidth, uint32_t uSrcHeight);
#ifdef DEBUG
int RecordingUtilsDbgDumpFrameEx(const uint8_t *pu8RGBBuf, size_t cbRGBBuf, const char *pszPath, const char *pszPrefx, uint16_t uWidth, uint32_t uHeight, uint8_t uBPP);
int RecordingUtilsDbgDumpFrame(const PRECORDINGFRAME pFrame);
#endif
#endif /* !MAIN_INCLUDED_RecordingUtils_h */
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