FreeRDP/libfreerdp/codec/color.c

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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Color Conversion Routines
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*
* Copyright 2010 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* Copyright 2016 Armin Novak <armin.novak@thincast.com>
* Copyright 2016 Thincast Technologies GmbH
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <winpr/crt.h>
#include <freerdp/log.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/primitives.h>
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#define TAG FREERDP_TAG("color")
BYTE* freerdp_glyph_convert(UINT32 width, UINT32 height, const BYTE* data)
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{
UINT32 x, y;
const BYTE* srcp;
BYTE* dstp;
BYTE* dstData;
UINT32 scanline;
/*
* converts a 1-bit-per-pixel glyph to a one-byte-per-pixel glyph:
* this approach uses a little more memory, but provides faster
* means of accessing individual pixels in blitting operations
*/
scanline = (width + 7) / 8;
dstData = (BYTE*) _aligned_malloc(width * height, 16);
if (!dstData)
return NULL;
ZeroMemory(dstData, width * height);
dstp = dstData;
for (y = 0; y < height; y++)
{
srcp = data + (y * scanline);
for (x = 0; x < width; x++)
{
if ((*srcp & (0x80 >> (x % 8))) != 0)
*dstp = 0xFF;
dstp++;
if (((x + 1) % 8 == 0) && x != 0)
srcp++;
}
}
return dstData;
}
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BOOL freerdp_image_copy_from_monochrome(BYTE* pDstData, UINT32 DstFormat,
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UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight,
const BYTE* pSrcData,
UINT32 backColor, UINT32 foreColor,
const gdiPalette* palette)
{
UINT32 x, y;
BOOL vFlip;
UINT32 nDstPad;
UINT32 monoStep;
UINT32 dstBitsPerPixel;
UINT32 dstBytesPerPixel;
dstBitsPerPixel = GetBitsPerPixel(DstFormat);
dstBytesPerPixel = GetBytesPerPixel(DstFormat);
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if (nDstStep == 0)
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nDstStep = dstBytesPerPixel * nWidth;
nDstPad = (nDstStep - (nWidth * dstBytesPerPixel));
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vFlip = FALSE;
monoStep = (nWidth + 7) / 8;
for (y = 0; y < nHeight; y++)
{
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const BYTE* monoBits;
BYTE* pDstLine = &pDstData[((nYDst + y) * nDstStep)];
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UINT32 monoBit = 0x80;
if (!vFlip)
monoBits = &pSrcData[monoStep * y];
else
monoBits = &pSrcData[monoStep * (nHeight - y - 1)];
for (x = 0; x < nWidth; x++)
{
BYTE* pDstPixel = &pDstLine[((nXDst + x) * GetBytesPerPixel(DstFormat))];
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BOOL monoPixel = (*monoBits & monoBit) ? TRUE : FALSE;
if (!(monoBit >>= 1))
{
monoBits++;
monoBit = 0x80;
}
if (monoPixel)
WriteColor(pDstPixel, DstFormat, backColor);
else
WriteColor(pDstPixel, DstFormat, foreColor);
}
}
return 1;
}
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static INLINE UINT32 freerdp_image_inverted_pointer_color(UINT32 x, UINT32 y,
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UINT32 format)
{
#if 1
/**
* Inverted pointer colors (where individual pixels can change their
* color to accommodate the background behind them) only seem to be
* supported on Windows.
* Using a static replacement color for these pixels (e.g. black)
* might result in invisible pointers depending on the background.
* This function returns either black or white, depending on the
* pixel's position.
*/
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BYTE fill = (x + y) & 1 ? 0x00 : 0xFF;
#else
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BYTE fill = 0x00;
#endif
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return GetColor(format, fill, fill, fill, 0xFF);
}
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/**
* Drawing Monochrome Pointers:
* http://msdn.microsoft.com/en-us/library/windows/hardware/ff556143/
*
* Drawing Color Pointers:
* http://msdn.microsoft.com/en-us/library/windows/hardware/ff556138/
*/
BOOL freerdp_image_copy_from_pointer_data(
BYTE* pDstData, UINT32 DstFormat, UINT32 nDstStep,
UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight,
const BYTE* xorMask, UINT32 xorMaskLength,
const BYTE* andMask, UINT32 andMaskLength,
UINT32 xorBpp, const gdiPalette* palette)
{
UINT32 x, y;
BOOL vFlip;
UINT32 nDstPad;
UINT32 xorStep;
UINT32 andStep;
UINT32 xorBit;
UINT32 andBit;
UINT32 xorPixel;
UINT32 andPixel;
UINT32 dstBitsPerPixel;
UINT32 dstBytesPerPixel;
dstBitsPerPixel = GetBitsPerPixel(DstFormat);
dstBytesPerPixel = GetBytesPerPixel(DstFormat);
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if (nDstStep <= 0)
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nDstStep = dstBytesPerPixel * nWidth;
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nDstPad = (nDstStep - (nWidth * dstBytesPerPixel));
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vFlip = (xorBpp == 1) ? FALSE : TRUE;
andStep = (nWidth + 7) / 8;
andStep += (andStep % 2);
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if (!xorMask || (xorMaskLength == 0))
return -1;
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switch (xorBpp)
{
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case 1:
if (!andMask || (andMaskLength == 0))
return -1;
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xorStep = (nWidth + 7) / 8;
xorStep += (xorStep % 2);
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if (xorStep * nHeight > xorMaskLength)
return -1;
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if (andStep * nHeight > andMaskLength)
return -1;
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for (y = 0; y < nHeight; y++)
{
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const BYTE* andBits;
const BYTE* xorBits;
BYTE* pDstPixel = &pDstData[((nYDst + y) * nDstStep) +
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(nXDst * GetBytesPerPixel(DstFormat))];
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xorBit = andBit = 0x80;
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if (!vFlip)
{
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xorBits = &xorMask[xorStep * y];
andBits = &andMask[andStep * y];
}
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else
{
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xorBits = &xorMask[xorStep * (nHeight - y - 1)];
andBits = &andMask[andStep * (nHeight - y - 1)];
}
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for (x = 0; x < nWidth; x++)
{
UINT32 color = 0;
xorPixel = (*xorBits & xorBit) ? 1 : 0;
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if (!(xorBit >>= 1))
{
xorBits++;
xorBit = 0x80;
}
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andPixel = (*andBits & andBit) ? 1 : 0;
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if (!(andBit >>= 1))
{
andBits++;
andBit = 0x80;
}
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if (!andPixel && !xorPixel)
color = GetColor(DstFormat, 0, 0, 0, 0xFF); /* black */
else if (!andPixel && xorPixel)
color = GetColor(DstFormat, 0xFF, 0xFF, 0xFF, 0xFF); /* white */
else if (andPixel && !xorPixel)
color = GetColor(DstFormat, 0, 0, 0, 0); /* transparent */
else if (andPixel && xorPixel)
color = freerdp_image_inverted_pointer_color(x, y, DstFormat); /* inverted */
WriteColor(pDstPixel, DstFormat, color);
pDstPixel += GetBytesPerPixel(DstFormat);
}
}
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return 1;
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case 8:
case 16:
case 24:
case 32:
{
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UINT32 xorBytesPerPixel = xorBpp >> 3;
xorStep = nWidth * xorBytesPerPixel;
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if (xorBpp == 8 && !palette)
{
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WLog_ERR(TAG, "null palette in convertion from %d bpp to %d bpp",
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xorBpp, dstBitsPerPixel);
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return -1;
}
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if (xorStep * nHeight > xorMaskLength)
return -1;
if (andMask)
{
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if (andStep * nHeight > andMaskLength)
return -1;
}
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for (y = 0; y < nHeight; y++)
{
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const BYTE* xorBits;
const BYTE* andBits = NULL;
BYTE* pDstPixel = &pDstData[((nYDst + y) * nDstStep) +
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(nXDst * GetBytesPerPixel(DstFormat))];
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andBit = 0x80;
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if (!vFlip)
{
if (andMask)
andBits = &andMask[andStep * y];
xorBits = &xorMask[xorStep * y];
}
else
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{
if (andMask)
andBits = &andMask[andStep * (nHeight - y - 1)];
xorBits = &xorMask[xorStep * (nHeight - y - 1)];
}
for (x = 0; x < nWidth; x++)
{
UINT32 pixelFormat;
UINT32 color;
BOOL ignoreAndMask = FALSE;
if (xorBpp == 32)
{
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pixelFormat = PIXEL_FORMAT_BGRA32;
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xorPixel = ReadColor(xorBits, pixelFormat);
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if (xorPixel & 0xFF)
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ignoreAndMask = TRUE;
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else
xorPixel |= 0xFF;
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}
else if (xorBpp == 16)
{
pixelFormat = PIXEL_FORMAT_RGB15;
xorPixel = ReadColor(xorBits, pixelFormat);
}
else if (xorBpp == 8)
{
pixelFormat = palette->format;
xorPixel = palette->palette[xorBits[0]];
}
else
{
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pixelFormat = PIXEL_FORMAT_BGR24;
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xorPixel = ReadColor(xorBits, pixelFormat);
}
xorPixel = ConvertColor(xorPixel,
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pixelFormat,
PIXEL_FORMAT_ARGB32,
palette);
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xorBits += xorBytesPerPixel;
andPixel = 0;
if (andMask)
{
andPixel = (*andBits & andBit) ? 1 : 0;
if (!(andBit >>= 1))
{
andBits++;
andBit = 0x80;
}
}
/* Ignore the AND mask, if the color format already supplies alpha data. */
color = xorPixel;
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if (andPixel && !ignoreAndMask)
{
if (xorPixel == 0xFF000000) /* black -> transparent */
xorPixel = 0x00000000;
else if (xorPixel == 0xFFFFFFFF) /* white -> inverted */
xorPixel = freerdp_image_inverted_pointer_color(x, y, PIXEL_FORMAT_ARGB32);
}
color = ConvertColor(xorPixel, PIXEL_FORMAT_ARGB32,
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DstFormat, palette);
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WriteColor(pDstPixel, DstFormat, color);
pDstPixel += GetBytesPerPixel(DstFormat);
}
}
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return 1;
}
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default:
WLog_ERR(TAG, "failed to convert from %d bpp to %d bpp",
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xorBpp, dstBitsPerPixel);
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return -1;
}
}
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static BOOL overlapping(const BYTE* pDstData, UINT32 nXDst, UINT32 nYDst,
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UINT32 nDstStep, UINT32 dstBytesPerPixel,
const BYTE* pSrcData, UINT32 nXSrc, UINT32 nYSrc,
UINT32 nSrcStep, UINT32 srcBytesPerPixel,
UINT32 nWidth, UINT32 nHeight)
{
const BYTE* pDstStart = &pDstData[nXDst * dstBytesPerPixel + nYDst * nDstStep];
const BYTE* pDstEnd = pDstStart + nHeight * nDstStep;
const BYTE* pSrcStart = &pSrcData[nXSrc * srcBytesPerPixel + nYSrc * nSrcStep];
const BYTE* pSrcEnd = pSrcStart + nHeight * nSrcStep;
if ((pDstStart >= pSrcStart) && (pDstStart <= pSrcEnd))
return TRUE;
if ((pDstEnd >= pSrcStart) && (pDstEnd <= pSrcEnd))
return TRUE;
return FALSE;
}
BOOL freerdp_image_copy(BYTE* pDstData, DWORD DstFormat,
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UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight,
const BYTE* pSrcData, DWORD SrcFormat,
UINT32 nSrcStep, UINT32 nXSrc, UINT32 nYSrc,
const gdiPalette* palette, UINT32 flags)
{
const UINT32 dstByte = GetBytesPerPixel(DstFormat);
const UINT32 srcByte = GetBytesPerPixel(SrcFormat);
const UINT32 copyDstWidth = nWidth * dstByte;
const UINT32 xSrcOffset = nXSrc * srcByte;
const UINT32 xDstOffset = nXDst * dstByte;
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BOOL vSrcVFlip = flags & FREERDP_FLIP_VERTICAL;
BOOL vSrcHFlip = flags & FREERDP_FLIP_HORIZONTAL;
UINT32 srcVOffset = 0;
INT32 srcVMultiplier = 1;
UINT32 dstVOffset = 0;
INT32 dstVMultiplier = 1;
if (!pDstData || !pSrcData)
return FALSE;
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if (nDstStep == 0)
nDstStep = nWidth * GetBytesPerPixel(DstFormat);
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if (nSrcStep == 0)
nSrcStep = nWidth * GetBytesPerPixel(SrcFormat);
if (vSrcVFlip)
{
srcVOffset = (nHeight - 1) * nSrcStep;
srcVMultiplier = -1;
}
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if (SrcFormat == DstFormat)
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{
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INT32 y;
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if (overlapping(pDstData, nXDst, nYDst, nDstStep, dstByte,
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pSrcData, nXSrc, nYSrc, nSrcStep, srcByte,
nWidth, nHeight))
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{
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/* Copy down */
if (nYDst < nYSrc)
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{
for (y = 0; y < nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
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nSrcStep * srcVMultiplier +
srcVOffset];
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BYTE* dstLine = &pDstData[(y + nYDst) *
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nDstStep * dstVMultiplier +
dstVOffset];
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memcpy(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
}
/* Copy up */
else if (nYDst > nYSrc)
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{
for (y = nHeight - 1; y >= 0; y--)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
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nSrcStep * srcVMultiplier +
srcVOffset];
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BYTE* dstLine = &pDstData[(y + nYDst) *
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nDstStep * dstVMultiplier +
dstVOffset];
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memcpy(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
}
/* Copy left */
else if (nXSrc > nXDst)
{
for (y = 0; y < nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
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nSrcStep * srcVMultiplier +
srcVOffset];
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BYTE* dstLine = &pDstData[(y + nYDst) *
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nDstStep * dstVMultiplier +
dstVOffset];
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memmove(&dstLine[xDstOffset],
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&srcLine[xSrcOffset], copyDstWidth);
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}
}
/* Copy right */
else if (nXSrc < nXDst)
{
for (y = nHeight - 1; y >= 0; y--)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
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nSrcStep * srcVMultiplier +
srcVOffset];
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BYTE* dstLine = &pDstData[(y + nYDst) *
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nDstStep * dstVMultiplier +
dstVOffset];
memmove(&dstLine[xDstOffset],
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&srcLine[xSrcOffset], copyDstWidth);
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}
}
/* Source and destination are equal... */
else
{
}
}
else
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{
for (y = 0; y < nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
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nSrcStep * srcVMultiplier +
srcVOffset];
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BYTE* dstLine = &pDstData[(y + nYDst) *
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nDstStep * dstVMultiplier +
dstVOffset];
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memcpy(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
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}
}
else
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{
UINT32 x, y;
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for (y = 0; y < nHeight; y++)
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{
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const BYTE* srcLine = &pSrcData[(y + nYSrc) *
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nSrcStep * srcVMultiplier +
srcVOffset];
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BYTE* dstLine = &pDstData[(y + nYDst) *
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nDstStep * dstVMultiplier + dstVOffset];
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for (x = 0; x < nWidth; x++)
{
UINT32 dstColor;
UINT32 color = ReadColor(&srcLine[(x + nXSrc) * srcByte],
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SrcFormat);
dstColor = ConvertColor(color, SrcFormat, DstFormat, palette);
WriteColor(&dstLine[(x + nXDst) * dstByte], DstFormat, dstColor);
}
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}
}
return TRUE;
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}
BOOL freerdp_image_fill(BYTE* pDstData, DWORD DstFormat,
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UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight, UINT32 color)
{
UINT32 x, y;
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for (y = 0; y < nHeight; y++)
{
BYTE* pDstLine = &pDstData[(y + nYDst) * nDstStep];
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for (x = 0; x < nWidth; x++)
{
BYTE* pDst = &pDstLine[(x + nXDst) * GetBytesPerPixel(DstFormat)];
WriteColor(pDst, DstFormat, color);
}
}
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return TRUE;
}