FreeRDP/libfreerdp/codec/color.c
2019-04-05 09:13:24 +02:00

573 lines
15 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Color Conversion Routines
*
* Copyright 2010 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* Copyright 2016 Armin Novak <armin.novak@thincast.com>
* Copyright 2016 Thincast Technologies GmbH
*
* 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
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <winpr/crt.h>
#include <freerdp/log.h>
#include <freerdp/freerdp.h>
#include <freerdp/primitives.h>
#define TAG FREERDP_TAG("color")
BYTE* freerdp_glyph_convert(UINT32 width, UINT32 height, const BYTE* data)
{
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;
}
BOOL freerdp_image_copy_from_monochrome(BYTE* pDstData, UINT32 DstFormat,
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 monoStep;
const UINT32 dstBytesPerPixel = GetBytesPerPixel(DstFormat);
if (!pDstData || !pSrcData || !palette)
return FALSE;
if (nDstStep == 0)
nDstStep = dstBytesPerPixel * nWidth;
vFlip = FALSE;
monoStep = (nWidth + 7) / 8;
for (y = 0; y < nHeight; y++)
{
const BYTE* monoBits;
BYTE* pDstLine = &pDstData[((nYDst + y) * nDstStep)];
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))];
BOOL monoPixel = (*monoBits & monoBit) ? TRUE : FALSE;
if (!(monoBit >>= 1))
{
monoBits++;
monoBit = 0x80;
}
if (monoPixel)
WriteColor(pDstPixel, DstFormat, backColor);
else
WriteColor(pDstPixel, DstFormat, foreColor);
}
}
return TRUE;
}
static INLINE UINT32 freerdp_image_inverted_pointer_color(UINT32 x, UINT32 y,
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.
*/
BYTE fill = (x + y) & 1 ? 0x00 : 0xFF;
#else
BYTE fill = 0x00;
#endif
return FreeRDPGetColor(format, fill, fill, fill, 0xFF);
}
/**
* 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 xorStep;
UINT32 andStep;
UINT32 xorBit;
UINT32 andBit;
UINT32 xorPixel;
UINT32 andPixel;
UINT32 dstBitsPerPixel;
UINT32 dstBytesPerPixel;
dstBitsPerPixel = GetBitsPerPixel(DstFormat);
dstBytesPerPixel = GetBytesPerPixel(DstFormat);
if (nDstStep <= 0)
nDstStep = dstBytesPerPixel * nWidth;
for (y = nYDst; y < nHeight; y++)
{
BYTE* pDstLine = &pDstData[y * nDstStep + nXDst * dstBytesPerPixel];
memset(pDstLine, 0, dstBytesPerPixel * (nWidth - nXDst));
}
vFlip = (xorBpp == 1) ? FALSE : TRUE;
andStep = (nWidth + 7) / 8;
andStep += (andStep % 2);
if (!xorMask || (xorMaskLength == 0))
return FALSE;
switch (xorBpp)
{
case 1:
if (!andMask || (andMaskLength == 0))
return FALSE;
xorStep = (nWidth + 7) / 8;
xorStep += (xorStep % 2);
if (xorStep * nHeight > xorMaskLength)
return FALSE;
if (andStep * nHeight > andMaskLength)
return FALSE;
for (y = 0; y < nHeight; y++)
{
const BYTE* andBits;
const BYTE* xorBits;
BYTE* pDstPixel = &pDstData[((nYDst + y) * nDstStep) +
(nXDst * GetBytesPerPixel(DstFormat))];
xorBit = andBit = 0x80;
if (!vFlip)
{
xorBits = &xorMask[xorStep * y];
andBits = &andMask[andStep * y];
}
else
{
xorBits = &xorMask[xorStep * (nHeight - y - 1)];
andBits = &andMask[andStep * (nHeight - y - 1)];
}
for (x = 0; x < nWidth; x++)
{
UINT32 color = 0;
xorPixel = (*xorBits & xorBit) ? 1 : 0;
if (!(xorBit >>= 1))
{
xorBits++;
xorBit = 0x80;
}
andPixel = (*andBits & andBit) ? 1 : 0;
if (!(andBit >>= 1))
{
andBits++;
andBit = 0x80;
}
if (!andPixel && !xorPixel)
color = FreeRDPGetColor(DstFormat, 0, 0, 0, 0xFF); /* black */
else if (!andPixel && xorPixel)
color = FreeRDPGetColor(DstFormat, 0xFF, 0xFF, 0xFF, 0xFF); /* white */
else if (andPixel && !xorPixel)
color = FreeRDPGetColor(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);
}
}
return TRUE;
case 8:
case 16:
case 24:
case 32:
{
UINT32 xorBytesPerPixel = xorBpp >> 3;
xorStep = nWidth * xorBytesPerPixel;
if (xorBpp == 8 && !palette)
{
WLog_ERR(TAG, "null palette in conversion from %"PRIu32" bpp to %"PRIu32" bpp",
xorBpp, dstBitsPerPixel);
return FALSE;
}
if (xorStep * nHeight > xorMaskLength)
return FALSE;
if (andMask)
{
if (andStep * nHeight > andMaskLength)
return FALSE;
}
for (y = 0; y < nHeight; y++)
{
const BYTE* xorBits;
const BYTE* andBits = NULL;
BYTE* pDstPixel = &pDstData[((nYDst + y) * nDstStep) +
(nXDst * GetBytesPerPixel(DstFormat))];
andBit = 0x80;
if (!vFlip)
{
if (andMask)
andBits = &andMask[andStep * y];
xorBits = &xorMask[xorStep * y];
}
else
{
if (andMask)
andBits = &andMask[andStep * (nHeight - y - 1)];
xorBits = &xorMask[xorStep * (nHeight - y - 1)];
}
for (x = 0; x < nWidth; x++)
{
UINT32 pixelFormat;
UINT32 color;
if (xorBpp == 32)
{
pixelFormat = PIXEL_FORMAT_BGRA32;
xorPixel = ReadColor(xorBits, pixelFormat);
}
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
{
pixelFormat = PIXEL_FORMAT_BGR24;
xorPixel = ReadColor(xorBits, pixelFormat);
}
xorPixel = FreeRDPConvertColor(xorPixel,
pixelFormat,
PIXEL_FORMAT_ARGB32,
palette);
xorBits += xorBytesPerPixel;
andPixel = 0;
if (andMask)
{
andPixel = (*andBits & andBit) ? 1 : 0;
if (!(andBit >>= 1))
{
andBits++;
andBit = 0x80;
}
}
if (andPixel)
{
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 = FreeRDPConvertColor(xorPixel, PIXEL_FORMAT_ARGB32,
DstFormat, palette);
WriteColor(pDstPixel, DstFormat, color);
pDstPixel += GetBytesPerPixel(DstFormat);
}
}
return TRUE;
}
default:
WLog_ERR(TAG, "failed to convert from %"PRIu32" bpp to %"PRIu32" bpp",
xorBpp, dstBitsPerPixel);
return FALSE;
}
}
static INLINE BOOL overlapping(const BYTE* pDstData, UINT32 nXDst, UINT32 nYDst,
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,
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;
const BOOL vSrcVFlip = flags & FREERDP_FLIP_VERTICAL;
UINT32 srcVOffset = 0;
INT32 srcVMultiplier = 1;
UINT32 dstVOffset = 0;
INT32 dstVMultiplier = 1;
if ((nHeight > INT32_MAX) || (nWidth > INT32_MAX))
return FALSE;
if (!pDstData || !pSrcData)
return FALSE;
if (nDstStep == 0)
nDstStep = nWidth * GetBytesPerPixel(DstFormat);
if (nSrcStep == 0)
nSrcStep = nWidth * GetBytesPerPixel(SrcFormat);
if (vSrcVFlip)
{
srcVOffset = (nHeight - 1) * nSrcStep;
srcVMultiplier = -1;
}
if (AreColorFormatsEqualNoAlpha(SrcFormat, DstFormat))
{
INT32 y;
if (overlapping(pDstData, nXDst, nYDst, nDstStep, dstByte,
pSrcData, nXSrc, nYSrc, nSrcStep, srcByte,
nWidth, nHeight))
{
/* Copy down */
if (nYDst < nYSrc)
{
for (y = 0; y < (INT32)nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
nSrcStep * srcVMultiplier +
srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) *
nDstStep * dstVMultiplier +
dstVOffset];
memcpy(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
}
/* Copy up */
else if (nYDst > nYSrc)
{
for (y = nHeight - 1; y >= 0; y--)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
nSrcStep * srcVMultiplier +
srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) *
nDstStep * dstVMultiplier +
dstVOffset];
memcpy(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
}
/* Copy left */
else if (nXSrc > nXDst)
{
for (y = 0; y < (INT32)nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
nSrcStep * srcVMultiplier +
srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) *
nDstStep * dstVMultiplier +
dstVOffset];
memmove(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
}
/* Copy right */
else if (nXSrc < nXDst)
{
for (y = (INT32)nHeight - 1; y >= 0; y--)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
nSrcStep * srcVMultiplier +
srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) *
nDstStep * dstVMultiplier +
dstVOffset];
memmove(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
}
/* Source and destination are equal... */
else
{
}
}
else
{
for (y = 0; y < (INT32)nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
nSrcStep * srcVMultiplier +
srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) *
nDstStep * dstVMultiplier +
dstVOffset];
memcpy(&dstLine[xDstOffset],
&srcLine[xSrcOffset], copyDstWidth);
}
}
}
else
{
INT32 x, y;
for (y = 0; y < (INT32)nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) *
nSrcStep * srcVMultiplier +
srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) *
nDstStep * dstVMultiplier + dstVOffset];
for (x = 0; x < (INT32)nWidth; x++)
{
UINT32 dstColor;
UINT32 color = ReadColor(&srcLine[(x + nXSrc) * srcByte],
SrcFormat);
dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
WriteColor(&dstLine[(x + nXDst) * dstByte], DstFormat, dstColor);
}
}
}
return TRUE;
}
BOOL freerdp_image_fill(BYTE* pDstData, DWORD DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight, UINT32 color)
{
UINT32 x, y;
const UINT32 bpp = GetBytesPerPixel(DstFormat);
BYTE* pFirstDstLine = &pDstData[nYDst * nDstStep];
BYTE* pFirstDstLineXOffset = &pFirstDstLine[nXDst * bpp];
for (x = 0; x < nWidth; x++)
{
BYTE* pDst = &pFirstDstLine[(x + nXDst) * bpp];
WriteColor(pDst, DstFormat, color);
}
for (y = 1; y < nHeight; y++)
{
BYTE* pDstLine = &pDstData[(y + nYDst) * nDstStep + nXDst * bpp];
memcpy(pDstLine, pFirstDstLineXOffset, nWidth * bpp);
}
return TRUE;
}