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FreeRDP/libfreerdp/codec/color.c

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/**
* 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.
*/
#include <freerdp/config.h>
#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>
#if defined(WITH_CAIRO)
#include <cairo.h>
#endif
#if defined(WITH_SWSCALE)
#include <libswscale/swscale.h>
#endif
#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*)winpr_aligned_malloc(1ull * 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* WINPR_RESTRICT pDstData, UINT32 DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT32 nWidth,
UINT32 nHeight, const BYTE* WINPR_RESTRICT pSrcData,
UINT32 backColor, UINT32 foreColor,
const gdiPalette* WINPR_RESTRICT palette)
{
UINT32 x, y;
BOOL vFlip;
UINT32 monoStep;
const UINT32 dstBytesPerPixel = FreeRDPGetBytesPerPixel(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) * FreeRDPGetBytesPerPixel(DstFormat))];
BOOL monoPixel = (*monoBits & monoBit) ? TRUE : FALSE;
if (!(monoBit >>= 1))
{
monoBits++;
monoBit = 0x80;
}
if (monoPixel)
FreeRDPWriteColor(pDstPixel, DstFormat, backColor);
else
FreeRDPWriteColor(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);
}
/*
* DIB color palettes are arrays of RGBQUAD structs with colors in BGRX format.
* They are used only by 1, 2, 4, and 8-bit bitmaps.
*/
static void fill_gdi_palette_for_icon(const BYTE* colorTable, UINT16 cbColorTable,
gdiPalette* palette)
{
UINT16 i;
WINPR_ASSERT(palette);
palette->format = PIXEL_FORMAT_BGRX32;
ZeroMemory(palette->palette, sizeof(palette->palette));
if (!cbColorTable)
return;
if ((cbColorTable % 4 != 0) || (cbColorTable / 4 > 256))
{
WLog_WARN(TAG, "weird palette size: %u", cbColorTable);
return;
}
for (i = 0; i < cbColorTable / 4; i++)
{
palette->palette[i] = FreeRDPReadColor(&colorTable[4 * i], palette->format);
}
}
static INLINE UINT32 div_ceil(UINT32 a, UINT32 b)
{
return (a + (b - 1)) / b;
}
static INLINE UINT32 round_up(UINT32 a, UINT32 b)
{
return b * div_ceil(a, b);
}
BOOL freerdp_image_copy_from_icon_data(BYTE* WINPR_RESTRICT pDstData, UINT32 DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT16 nWidth,
UINT16 nHeight, const BYTE* WINPR_RESTRICT bitsColor,
UINT16 cbBitsColor, const BYTE* WINPR_RESTRICT bitsMask,
UINT16 cbBitsMask, const BYTE* WINPR_RESTRICT colorTable,
UINT16 cbColorTable, UINT32 bpp)
{
DWORD format;
gdiPalette palette;
if (!pDstData || !bitsColor)
return FALSE;
/*
* Color formats used by icons are DIB bitmap formats (2-bit format
* is not used by MS-RDPERP). Note that 16-bit is RGB555, not RGB565,
* and that 32-bit format uses BGRA order.
*/
switch (bpp)
{
case 1:
case 4:
/*
* These formats are not supported by freerdp_image_copy().
* PIXEL_FORMAT_MONO and PIXEL_FORMAT_A4 are *not* correct
* color formats for this. Please fix freerdp_image_copy()
* if you came here to fix a broken icon of some weird app
* that still uses 1 or 4bpp format in the 21st century.
*/
WLog_WARN(TAG, "1bpp and 4bpp icons are not supported");
return FALSE;
case 8:
format = PIXEL_FORMAT_RGB8;
break;
case 16:
format = PIXEL_FORMAT_RGB15;
break;
case 24:
format = PIXEL_FORMAT_RGB24;
break;
case 32:
format = PIXEL_FORMAT_BGRA32;
break;
default:
WLog_WARN(TAG, "invalid icon bpp: %" PRIu32, bpp);
return FALSE;
}
/* Ensure we have enough source data bytes for image copy. */
if (cbBitsColor < nWidth * nHeight * FreeRDPGetBytesPerPixel(format))
return FALSE;
fill_gdi_palette_for_icon(colorTable, cbColorTable, &palette);
if (!freerdp_image_copy(pDstData, DstFormat, nDstStep, nXDst, nYDst, nWidth, nHeight, bitsColor,
format, 0, 0, 0, &palette, FREERDP_FLIP_VERTICAL))
return FALSE;
/* apply alpha mask */
if (FreeRDPColorHasAlpha(DstFormat) && cbBitsMask)
{
BYTE nextBit;
const BYTE* maskByte;
UINT32 x, y;
UINT32 stride;
BYTE r, g, b;
BYTE* dstBuf = pDstData;
UINT32 dstBpp = FreeRDPGetBytesPerPixel(DstFormat);
/*
* Each byte encodes 8 adjacent pixels (with LSB padding as needed).
* And due to hysterical raisins, stride of DIB bitmaps must be
* a multiple of 4 bytes.
*/
stride = round_up(div_ceil(nWidth, 8), 4);
for (y = 0; y < nHeight; y++)
{
maskByte = &bitsMask[stride * (nHeight - 1 - y)];
nextBit = 0x80;
for (x = 0; x < nWidth; x++)
{
UINT32 color;
BYTE alpha = (*maskByte & nextBit) ? 0x00 : 0xFF;
/* read color back, add alpha and write it back */
color = FreeRDPReadColor(dstBuf, DstFormat);
FreeRDPSplitColor(color, DstFormat, &r, &g, &b, NULL, &palette);
color = FreeRDPGetColor(DstFormat, r, g, b, alpha);
FreeRDPWriteColor(dstBuf, DstFormat, color);
nextBit >>= 1;
dstBuf += dstBpp;
if (!nextBit)
{
nextBit = 0x80;
maskByte++;
}
}
}
}
return TRUE;
}
static BOOL freerdp_image_copy_from_pointer_data_1bpp(
BYTE* WINPR_RESTRICT pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight, const BYTE* WINPR_RESTRICT xorMask, UINT32 xorMaskLength,
const BYTE* WINPR_RESTRICT andMask, UINT32 andMaskLength, UINT32 xorBpp)
{
UINT32 x, y;
BOOL vFlip;
UINT32 xorStep;
UINT32 andStep;
UINT32 xorBit;
UINT32 andBit;
UINT32 xorPixel;
UINT32 andPixel;
vFlip = (xorBpp == 1) ? FALSE : TRUE;
andStep = (nWidth + 7) / 8;
andStep += (andStep % 2);
if (!xorMask || (xorMaskLength == 0))
return FALSE;
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 * FreeRDPGetBytesPerPixel(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 */
FreeRDPWriteColor(pDstPixel, DstFormat, color);
pDstPixel += FreeRDPGetBytesPerPixel(DstFormat);
}
}
return TRUE;
}
static BOOL freerdp_image_copy_from_pointer_data_xbpp(
BYTE* WINPR_RESTRICT pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight, const BYTE* WINPR_RESTRICT xorMask, UINT32 xorMaskLength,
const BYTE* WINPR_RESTRICT andMask, UINT32 andMaskLength, UINT32 xorBpp,
const gdiPalette* palette)
{
UINT32 x, y;
BOOL vFlip;
UINT32 xorStep;
UINT32 andStep;
UINT32 andBit;
UINT32 xorPixel;
UINT32 andPixel;
UINT32 dstBitsPerPixel;
UINT32 xorBytesPerPixel;
dstBitsPerPixel = FreeRDPGetBitsPerPixel(DstFormat);
vFlip = (xorBpp == 1) ? FALSE : TRUE;
andStep = (nWidth + 7) / 8;
andStep += (andStep % 2);
if (!xorMask || (xorMaskLength == 0))
return FALSE;
xorBytesPerPixel = xorBpp >> 3;
xorStep = nWidth * xorBytesPerPixel;
xorStep += (xorStep % 2);
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 * FreeRDPGetBytesPerPixel(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 = FreeRDPReadColor(xorBits, pixelFormat);
}
else if (xorBpp == 16)
{
pixelFormat = PIXEL_FORMAT_RGB15;
xorPixel = FreeRDPReadColor(xorBits, pixelFormat);
}
else if (xorBpp == 8)
{
pixelFormat = palette->format;
xorPixel = palette->palette[xorBits[0]];
}
else
{
pixelFormat = PIXEL_FORMAT_BGR24;
xorPixel = FreeRDPReadColor(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);
FreeRDPWriteColor(pDstPixel, DstFormat, color);
pDstPixel += FreeRDPGetBytesPerPixel(DstFormat);
}
}
return TRUE;
}
/**
* 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* WINPR_RESTRICT pDstData, UINT32 DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight,
const BYTE* WINPR_RESTRICT xorMask, UINT32 xorMaskLength,
const BYTE* WINPR_RESTRICT andMask, UINT32 andMaskLength,
UINT32 xorBpp, const gdiPalette* palette)
{
UINT32 dstBitsPerPixel;
UINT32 dstBytesPerPixel;
dstBitsPerPixel = FreeRDPGetBitsPerPixel(DstFormat);
dstBytesPerPixel = FreeRDPGetBytesPerPixel(DstFormat);
if (nDstStep <= 0)
nDstStep = dstBytesPerPixel * nWidth;
for (UINT32 y = nYDst; y < nHeight; y++)
{
BYTE* WINPR_RESTRICT pDstLine = &pDstData[y * nDstStep + nXDst * dstBytesPerPixel];
memset(pDstLine, 0, 1ull * dstBytesPerPixel * (nWidth - nXDst));
}
switch (xorBpp)
{
case 1:
return freerdp_image_copy_from_pointer_data_1bpp(
pDstData, DstFormat, nDstStep, nXDst, nYDst, nWidth, nHeight, xorMask,
xorMaskLength, andMask, andMaskLength, xorBpp);
case 8:
case 16:
case 24:
case 32:
return freerdp_image_copy_from_pointer_data_xbpp(
pDstData, DstFormat, nDstStep, nXDst, nYDst, nWidth, nHeight, xorMask,
xorMaskLength, andMask, andMaskLength, xorBpp, palette);
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;
WINPR_UNUSED(nWidth);
if ((pDstStart >= pSrcStart) && (pDstStart <= pSrcEnd))
return TRUE;
if ((pDstEnd >= pSrcStart) && (pDstEnd <= pSrcEnd))
return TRUE;
return FALSE;
}
static BOOL freerdp_image_copy_no_overlap(BYTE* WINPR_RESTRICT pDstData, DWORD DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight,
const BYTE* WINPR_RESTRICT pSrcData, DWORD SrcFormat,
UINT32 nSrcStep, UINT32 nXSrc, UINT32 nYSrc,
const gdiPalette* WINPR_RESTRICT palette, UINT32 flags)
{
const UINT32 dstByte = FreeRDPGetBytesPerPixel(DstFormat);
const UINT32 srcByte = FreeRDPGetBytesPerPixel(SrcFormat);
const UINT32 copyDstWidth = nWidth * dstByte;
const UINT32 xSrcOffset = nXSrc * srcByte;
const UINT32 xDstOffset = nXDst * dstByte;
const BOOL vSrcVFlip = (flags & FREERDP_FLIP_VERTICAL) ? TRUE : FALSE;
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 * FreeRDPGetBytesPerPixel(DstFormat);
if (nSrcStep == 0)
nSrcStep = nWidth * FreeRDPGetBytesPerPixel(SrcFormat);
if (vSrcVFlip)
{
srcVOffset = (nHeight - 1) * nSrcStep;
srcVMultiplier = -1;
}
if (((flags & FREERDP_KEEP_DST_ALPHA) != 0) && FreeRDPColorHasAlpha(DstFormat))
{
for (UINT32 y = 0; y < nHeight; y++)
{
const BYTE* WINPR_RESTRICT srcLine =
&pSrcData[(y + nYSrc) * nSrcStep * srcVMultiplier + srcVOffset];
BYTE* WINPR_RESTRICT dstLine =
&pDstData[(y + nYDst) * nDstStep * dstVMultiplier + dstVOffset];
UINT32 color = FreeRDPReadColor(&srcLine[nXSrc * srcByte], SrcFormat);
UINT32 oldColor = color;
UINT32 dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColorIgnoreAlpha(&dstLine[nXDst * dstByte], DstFormat, dstColor);
for (UINT32 x = 1; x < nWidth; x++)
{
color = FreeRDPReadColor(&srcLine[(x + nXSrc) * srcByte], SrcFormat);
if (color == oldColor)
{
FreeRDPWriteColorIgnoreAlpha(&dstLine[(x + nXDst) * dstByte], DstFormat,
dstColor);
}
else
{
oldColor = color;
dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColorIgnoreAlpha(&dstLine[(x + nXDst) * dstByte], DstFormat,
dstColor);
}
}
}
}
else if (FreeRDPAreColorFormatsEqualNoAlpha(SrcFormat, DstFormat))
{
for (UINT32 y = 0; y < nHeight; y++)
{
const BYTE* WINPR_RESTRICT srcLine =
&pSrcData[(y + nYSrc) * nSrcStep * srcVMultiplier + srcVOffset];
BYTE* WINPR_RESTRICT dstLine =
&pDstData[(y + nYDst) * nDstStep * dstVMultiplier + dstVOffset];
memcpy(&dstLine[xDstOffset], &srcLine[xSrcOffset], copyDstWidth);
}
}
else
{
for (UINT32 y = 0; y < nHeight; y++)
{
const BYTE* WINPR_RESTRICT srcLine =
&pSrcData[(y + nYSrc) * nSrcStep * srcVMultiplier + srcVOffset];
BYTE* WINPR_RESTRICT dstLine =
&pDstData[(y + nYDst) * nDstStep * dstVMultiplier + dstVOffset];
UINT32 color = FreeRDPReadColor(&srcLine[nXSrc * srcByte], SrcFormat);
UINT32 oldColor = color;
UINT32 dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColor(&dstLine[nXDst * dstByte], DstFormat, dstColor);
for (UINT32 x = 1; x < nWidth; x++)
{
color = FreeRDPReadColor(&srcLine[(x + nXSrc) * srcByte], SrcFormat);
if (color == oldColor)
{
FreeRDPWriteColor(&dstLine[(x + nXDst) * dstByte], DstFormat, dstColor);
}
else
{
oldColor = color;
dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColor(&dstLine[(x + nXDst) * dstByte], DstFormat, dstColor);
}
}
}
}
return TRUE;
}
static BOOL freerdp_image_copy_overlap(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 = FreeRDPGetBytesPerPixel(DstFormat);
const UINT32 srcByte = FreeRDPGetBytesPerPixel(SrcFormat);
const UINT32 copyDstWidth = nWidth * dstByte;
const UINT32 xSrcOffset = nXSrc * srcByte;
const UINT32 xDstOffset = nXDst * dstByte;
const BOOL vSrcVFlip = (flags & FREERDP_FLIP_VERTICAL) ? TRUE : FALSE;
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 * FreeRDPGetBytesPerPixel(DstFormat);
if (nSrcStep == 0)
nSrcStep = nWidth * FreeRDPGetBytesPerPixel(SrcFormat);
if (vSrcVFlip)
{
srcVOffset = (nHeight - 1) * nSrcStep;
srcVMultiplier = -1;
}
if (((flags & FREERDP_KEEP_DST_ALPHA) != 0) && FreeRDPColorHasAlpha(DstFormat))
{
for (UINT32 y = 0; y < nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) * nSrcStep * srcVMultiplier + srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) * nDstStep * dstVMultiplier + dstVOffset];
UINT32 color = FreeRDPReadColor(&srcLine[nXSrc * srcByte], SrcFormat);
UINT32 oldColor = color;
UINT32 dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColorIgnoreAlpha(&dstLine[nXDst * dstByte], DstFormat, dstColor);
for (UINT32 x = 1; x < nWidth; x++)
{
color = FreeRDPReadColor(&srcLine[(x + nXSrc) * srcByte], SrcFormat);
if (color == oldColor)
{
FreeRDPWriteColorIgnoreAlpha(&dstLine[(x + nXDst) * dstByte], DstFormat,
dstColor);
}
else
{
oldColor = color;
dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColorIgnoreAlpha(&dstLine[(x + nXDst) * dstByte], DstFormat,
dstColor);
}
}
}
}
else if (FreeRDPAreColorFormatsEqualNoAlpha(SrcFormat, DstFormat))
{
INT32 y;
/* 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 (UINT32 y = 0; y < nHeight; y++)
{
const BYTE* srcLine = &pSrcData[(y + nYSrc) * nSrcStep * srcVMultiplier + srcVOffset];
BYTE* dstLine = &pDstData[(y + nYDst) * nDstStep * dstVMultiplier + dstVOffset];
UINT32 color = FreeRDPReadColor(&srcLine[nXSrc * srcByte], SrcFormat);
UINT32 oldColor = color;
UINT32 dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColor(&dstLine[nXDst * dstByte], DstFormat, dstColor);
for (UINT32 x = 1; x < nWidth; x++)
{
color = FreeRDPReadColor(&srcLine[(x + nXSrc) * srcByte], SrcFormat);
if (color == oldColor)
{
FreeRDPWriteColor(&dstLine[(x + nXDst) * dstByte], DstFormat, dstColor);
}
else
{
oldColor = color;
dstColor = FreeRDPConvertColor(color, SrcFormat, DstFormat, palette);
FreeRDPWriteColor(&dstLine[(x + nXDst) * dstByte], DstFormat, dstColor);
}
}
}
}
return TRUE;
}
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 = FreeRDPGetBytesPerPixel(DstFormat);
const UINT32 srcByte = FreeRDPGetBytesPerPixel(SrcFormat);
if ((nHeight > INT32_MAX) || (nWidth > INT32_MAX))
return FALSE;
if (!pDstData || !pSrcData)
return FALSE;
if (nDstStep == 0)
nDstStep = nWidth * FreeRDPGetBytesPerPixel(DstFormat);
if (nSrcStep == 0)
nSrcStep = nWidth * FreeRDPGetBytesPerPixel(SrcFormat);
const BOOL ovl = overlapping(pDstData, nXDst, nYDst, nDstStep, dstByte, pSrcData, nXSrc, nYSrc,
nSrcStep, srcByte, nWidth, nHeight);
if (ovl)
return freerdp_image_copy_overlap(pDstData, DstFormat, nDstStep, nXDst, nYDst, nWidth,
nHeight, pSrcData, SrcFormat, nSrcStep, nXSrc, nYSrc,
palette, flags);
return freerdp_image_copy_no_overlap(pDstData, DstFormat, nDstStep, nXDst, nYDst, nWidth,
nHeight, pSrcData, SrcFormat, nSrcStep, nXSrc, nYSrc,
palette, flags);
}
BOOL freerdp_image_fill(BYTE* WINPR_RESTRICT pDstData, DWORD DstFormat, UINT32 nDstStep,
UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight, UINT32 color)
{
if ((nWidth == 0) || (nHeight == 0))
return TRUE;
const UINT32 bpp = FreeRDPGetBytesPerPixel(DstFormat);
BYTE* WINPR_RESTRICT pFirstDstLine;
BYTE* WINPR_RESTRICT pFirstDstLineXOffset;
if (nDstStep == 0)
nDstStep = (nXDst + nWidth) * FreeRDPGetBytesPerPixel(DstFormat);
pFirstDstLine = &pDstData[nYDst * nDstStep];
pFirstDstLineXOffset = &pFirstDstLine[nXDst * bpp];
for (UINT32 x = 0; x < nWidth; x++)
{
BYTE* pDst = &pFirstDstLine[(x + nXDst) * bpp];
FreeRDPWriteColor(pDst, DstFormat, color);
}
for (UINT32 y = 1; y < nHeight; y++)
{
BYTE* pDstLine = &pDstData[(y + nYDst) * nDstStep + nXDst * bpp];
memcpy(pDstLine, pFirstDstLineXOffset, 1ull * nWidth * bpp);
}
return TRUE;
}
#if defined(WITH_SWSCALE)
static int av_format_for_buffer(UINT32 format)
{
switch (format)
{
case PIXEL_FORMAT_ARGB32:
return AV_PIX_FMT_BGRA;
case PIXEL_FORMAT_XRGB32:
return AV_PIX_FMT_BGR0;
case PIXEL_FORMAT_BGRA32:
return AV_PIX_FMT_RGBA;
case PIXEL_FORMAT_BGRX32:
return AV_PIX_FMT_RGB0;
default:
return AV_PIX_FMT_NONE;
}
}
#endif
BOOL freerdp_image_scale(BYTE* WINPR_RESTRICT pDstData, DWORD DstFormat, UINT32 nDstStep,
UINT32 nXDst, UINT32 nYDst, UINT32 nDstWidth, UINT32 nDstHeight,
const BYTE* WINPR_RESTRICT pSrcData, DWORD SrcFormat, UINT32 nSrcStep,
UINT32 nXSrc, UINT32 nYSrc, UINT32 nSrcWidth, UINT32 nSrcHeight)
{
BOOL rc = FALSE;
if (nDstStep == 0)
nDstStep = nDstWidth * FreeRDPGetBytesPerPixel(DstFormat);
if (nSrcStep == 0)
nSrcStep = nSrcWidth * FreeRDPGetBytesPerPixel(SrcFormat);
#if defined(WITH_SWSCALE) || defined(WITH_CAIRO)
const BYTE* WINPR_RESTRICT src =
&pSrcData[nXSrc * FreeRDPGetBytesPerPixel(SrcFormat) + nYSrc * nSrcStep];
BYTE* WINPR_RESTRICT dst =
&pDstData[nXDst * FreeRDPGetBytesPerPixel(DstFormat) + nYDst * nDstStep];
#endif
/* direct copy is much faster than scaling, so check if we can simply copy... */
if ((nDstWidth == nSrcWidth) && (nDstHeight == nSrcHeight))
{
return freerdp_image_copy_no_overlap(pDstData, DstFormat, nDstStep, nXDst, nYDst, nDstWidth,
nDstHeight, pSrcData, SrcFormat, nSrcStep, nXSrc,
nYSrc, NULL, FREERDP_FLIP_NONE);
}
else
#if defined(WITH_SWSCALE)
{
int res;
struct SwsContext* resize;
int srcFormat = av_format_for_buffer(SrcFormat);
int dstFormat = av_format_for_buffer(DstFormat);
const int srcStep[1] = { (int)nSrcStep };
const int dstStep[1] = { (int)nDstStep };
if ((srcFormat == AV_PIX_FMT_NONE) || (dstFormat == AV_PIX_FMT_NONE))
return FALSE;
resize = sws_getContext((int)nSrcWidth, (int)nSrcHeight, srcFormat, (int)nDstWidth,
(int)nDstHeight, dstFormat, SWS_BILINEAR, NULL, NULL, NULL);
if (!resize)
goto fail;
res = sws_scale(resize, &src, srcStep, 0, (int)nSrcHeight, &dst, dstStep);
rc = (res == ((int)nDstHeight));
fail:
sws_freeContext(resize);
}
#elif defined(WITH_CAIRO)
{
const double sx = (double)nDstWidth / (double)nSrcWidth;
const double sy = (double)nDstHeight / (double)nSrcHeight;
cairo_t* cairo_context;
cairo_surface_t *csrc, *cdst;
if ((nSrcWidth > INT_MAX) || (nSrcHeight > INT_MAX) || (nSrcStep > INT_MAX))
return FALSE;
if ((nDstWidth > INT_MAX) || (nDstHeight > INT_MAX) || (nDstStep > INT_MAX))
return FALSE;
csrc = cairo_image_surface_create_for_data((void*)src, CAIRO_FORMAT_ARGB32, (int)nSrcWidth,
(int)nSrcHeight, (int)nSrcStep);
cdst = cairo_image_surface_create_for_data(dst, CAIRO_FORMAT_ARGB32, (int)nDstWidth,
(int)nDstHeight, (int)nDstStep);
if (!csrc || !cdst)
goto fail;
cairo_context = cairo_create(cdst);
if (!cairo_context)
goto fail2;
cairo_scale(cairo_context, sx, sy);
cairo_set_operator(cairo_context, CAIRO_OPERATOR_SOURCE);
cairo_set_source_surface(cairo_context, csrc, 0, 0);
cairo_paint(cairo_context);
rc = TRUE;
fail2:
cairo_destroy(cairo_context);
fail:
cairo_surface_destroy(csrc);
cairo_surface_destroy(cdst);
}
#else
{
WLog_WARN(TAG, "SmartScaling requested but compiled without libcairo support!");
}
#endif
return rc;
}
DWORD FreeRDPAreColorFormatsEqualNoAlpha(DWORD first, DWORD second)
{
const DWORD mask = (DWORD) ~(8UL << 12UL);
return (first & mask) == (second & mask);
}
const char* FreeRDPGetColorFormatName(UINT32 format)
{
switch (format)
{
/* 32bpp formats */
case PIXEL_FORMAT_ARGB32:
return "PIXEL_FORMAT_ARGB32";
case PIXEL_FORMAT_XRGB32:
return "PIXEL_FORMAT_XRGB32";
case PIXEL_FORMAT_ABGR32:
return "PIXEL_FORMAT_ABGR32";
case PIXEL_FORMAT_XBGR32:
return "PIXEL_FORMAT_XBGR32";
case PIXEL_FORMAT_BGRA32:
return "PIXEL_FORMAT_BGRA32";
case PIXEL_FORMAT_BGRX32:
return "PIXEL_FORMAT_BGRX32";
case PIXEL_FORMAT_RGBA32:
return "PIXEL_FORMAT_RGBA32";
case PIXEL_FORMAT_RGBX32:
return "PIXEL_FORMAT_RGBX32";
case PIXEL_FORMAT_BGRX32_DEPTH30:
return "PIXEL_FORMAT_BGRX32_DEPTH30";
case PIXEL_FORMAT_RGBX32_DEPTH30:
return "PIXEL_FORMAT_RGBX32_DEPTH30";
/* 24bpp formats */
case PIXEL_FORMAT_RGB24:
return "PIXEL_FORMAT_RGB24";
case PIXEL_FORMAT_BGR24:
return "PIXEL_FORMAT_BGR24";
/* 16bpp formats */
case PIXEL_FORMAT_RGB16:
return "PIXEL_FORMAT_RGB16";
case PIXEL_FORMAT_BGR16:
return "PIXEL_FORMAT_BGR16";
case PIXEL_FORMAT_ARGB15:
return "PIXEL_FORMAT_ARGB15";
case PIXEL_FORMAT_RGB15:
return "PIXEL_FORMAT_RGB15";
case PIXEL_FORMAT_ABGR15:
return "PIXEL_FORMAT_ABGR15";
case PIXEL_FORMAT_BGR15:
return "PIXEL_FORMAT_BGR15";
/* 8bpp formats */
case PIXEL_FORMAT_RGB8:
return "PIXEL_FORMAT_RGB8";
/* 4 bpp formats */
case PIXEL_FORMAT_A4:
return "PIXEL_FORMAT_A4";
/* 1bpp formats */
case PIXEL_FORMAT_MONO:
return "PIXEL_FORMAT_MONO";
default:
return "UNKNOWN";
}
}
void FreeRDPSplitColor(UINT32 color, UINT32 format, BYTE* _r, BYTE* _g, BYTE* _b, BYTE* _a,
const gdiPalette* palette)
{
UINT32 tmp = 0;
switch (format)
{
/* 32bpp formats */
case PIXEL_FORMAT_ARGB32:
if (_a)
*_a = (BYTE)(color >> 24);
if (_r)
*_r = (BYTE)(color >> 16);
if (_g)
*_g = (BYTE)(color >> 8);
if (_b)
*_b = (BYTE)color;
break;
case PIXEL_FORMAT_XRGB32:
if (_r)
*_r = (BYTE)(color >> 16);
if (_g)
*_g = (BYTE)(color >> 8);
if (_b)
*_b = (BYTE)color;
if (_a)
*_a = 0xFF;
break;
case PIXEL_FORMAT_ABGR32:
if (_a)
*_a = (BYTE)(color >> 24);
if (_b)
*_b = (BYTE)(color >> 16);
if (_g)
*_g = (BYTE)(color >> 8);
if (_r)
*_r = (BYTE)color;
break;
case PIXEL_FORMAT_XBGR32:
if (_b)
*_b = (BYTE)(color >> 16);
if (_g)
*_g = (BYTE)(color >> 8);
if (_r)
*_r = (BYTE)color;
if (_a)
*_a = 0xFF;
break;
case PIXEL_FORMAT_RGBA32:
if (_r)
*_r = (BYTE)(color >> 24);
if (_g)
*_g = (BYTE)(color >> 16);
if (_b)
*_b = (BYTE)(color >> 8);
if (_a)
*_a = (BYTE)color;
break;
case PIXEL_FORMAT_RGBX32:
if (_r)
*_r = (BYTE)(color >> 24);
if (_g)
*_g = (BYTE)(color >> 16);
if (_b)
*_b = (BYTE)(color >> 8);
if (_a)
*_a = 0xFF;
break;
case PIXEL_FORMAT_BGRA32:
if (_b)
*_b = (BYTE)(color >> 24);
if (_g)
*_g = (BYTE)(color >> 16);
if (_r)
*_r = (BYTE)(color >> 8);
if (_a)
*_a = (BYTE)color;
break;
case PIXEL_FORMAT_BGRX32:
if (_b)
*_b = (BYTE)(color >> 24);
if (_g)
*_g = (BYTE)(color >> 16);
if (_r)
*_r = (BYTE)(color >> 8);
if (_a)
*_a = 0xFF;
break;
/* 24bpp formats */
case PIXEL_FORMAT_RGB24:
if (_r)
*_r = (BYTE)(color >> 16);
if (_g)
*_g = (BYTE)(color >> 8);
if (_b)
*_b = (BYTE)color;
if (_a)
*_a = 0xFF;
break;
case PIXEL_FORMAT_BGR24:
if (_b)
*_b = (BYTE)(color >> 16);
if (_g)
*_g = (BYTE)(color >> 8);
if (_r)
*_r = (BYTE)color;
if (_a)
*_a = 0xFF;
break;
/* 16bpp formats */
case PIXEL_FORMAT_RGB16:
if (_r)
{
const UINT32 c = (color >> 11) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_r = (BYTE)(val > 255 ? 255 : val);
}
if (_g)
{
const UINT32 c = (color >> 5) & 0x3F;
const UINT32 val = (c << 2) + c / 4 / 2;
*_g = (BYTE)(val > 255 ? 255 : val);
}
if (_b)
{
const UINT32 c = (color)&0x1F;
const UINT32 val = (c << 3) + c / 4;
*_b = (BYTE)(val > 255 ? 255 : val);
}
if (_a)
*_a = 0xFF;
break;
case PIXEL_FORMAT_BGR16:
if (_r)
{
const UINT32 c = (color)&0x1F;
const UINT32 val = (c << 3) + c / 4;
*_r = (BYTE)(val > 255 ? 255 : val);
}
if (_g)
{
const UINT32 c = (color >> 5) & 0x3F;
const UINT32 val = (c << 2) + c / 4 / 2;
*_g = (BYTE)(val > 255 ? 255 : val);
}
if (_b)
{
const UINT32 c = (color >> 11) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_b = (BYTE)(val > 255 ? 255 : val);
}
if (_a)
*_a = 0xFF;
break;
case PIXEL_FORMAT_ARGB15:
if (_r)
{
const UINT32 c = (color >> 10) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_r = (BYTE)(val > 255 ? 255 : val);
}
if (_g)
{
const UINT32 c = (color >> 5) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_g = (BYTE)(val > 255 ? 255 : val);
}
if (_b)
{
const UINT32 c = (color)&0x1F;
const UINT32 val = (c << 3) + c / 4;
*_b = (BYTE)(val > 255 ? 255 : val);
}
if (_a)
*_a = color & 0x8000 ? 0xFF : 0x00;
break;
case PIXEL_FORMAT_ABGR15:
if (_r)
{
const UINT32 c = (color)&0x1F;
const UINT32 val = (c << 3) + c / 4;
*_r = (BYTE)(val > 255 ? 255 : val);
}
if (_g)
{
const UINT32 c = (color >> 5) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_g = (BYTE)(val > 255 ? 255 : val);
}
if (_b)
{
const UINT32 c = (color >> 10) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_b = (BYTE)(val > 255 ? 255 : val);
}
if (_a)
*_a = color & 0x8000 ? 0xFF : 0x00;
break;
/* 15bpp formats */
case PIXEL_FORMAT_RGB15:
if (_r)
{
const UINT32 c = (color >> 10) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_r = (BYTE)(val > 255 ? 255 : val);
}
if (_g)
{
const UINT32 c = (color >> 5) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_g = (BYTE)(val > 255 ? 255 : val);
}
if (_b)
{
const UINT32 c = (color)&0x1F;
const UINT32 val = (c << 3) + c / 4;
*_b = (BYTE)(val > 255 ? 255 : val);
}
if (_a)
*_a = 0xFF;
break;
case PIXEL_FORMAT_BGR15:
if (_r)
{
const UINT32 c = (color)&0x1F;
const UINT32 val = (c << 3) + c / 4;
*_r = (BYTE)(val > 255 ? 255 : val);
}
if (_g)
{
const UINT32 c = (color >> 5) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_g = (BYTE)(val > 255 ? 255 : val);
}
if (_b)
{
const UINT32 c = (color >> 10) & 0x1F;
const UINT32 val = (c << 3) + c / 4;
*_b = (BYTE)(val > 255 ? 255 : val);
}
if (_a)
*_a = 0xFF;
break;
/* 8bpp formats */
case PIXEL_FORMAT_RGB8:
if (color <= 0xFF)
{
tmp = palette->palette[color];
FreeRDPSplitColor(tmp, palette->format, _r, _g, _b, _a, NULL);
}
else
{
if (_r)
*_r = 0x00;
if (_g)
*_g = 0x00;
if (_b)
*_b = 0x00;
if (_a)
*_a = 0x00;
}
break;
/* 1bpp formats */
case PIXEL_FORMAT_MONO:
if (_r)
*_r = (color) ? 0xFF : 0x00;
if (_g)
*_g = (color) ? 0xFF : 0x00;
if (_b)
*_b = (color) ? 0xFF : 0x00;
if (_a)
*_a = (color) ? 0xFF : 0x00;
break;
/* 4 bpp formats */
case PIXEL_FORMAT_A4:
default:
if (_r)
*_r = 0x00;
if (_g)
*_g = 0x00;
if (_b)
*_b = 0x00;
if (_a)
*_a = 0x00;
WLog_ERR(TAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
break;
}
}
BOOL FreeRDPWriteColorIgnoreAlpha(BYTE* WINPR_RESTRICT dst, UINT32 format, UINT32 color)
{
switch (format)
{
case PIXEL_FORMAT_XBGR32:
case PIXEL_FORMAT_XRGB32:
case PIXEL_FORMAT_ABGR32:
case PIXEL_FORMAT_ARGB32:
{
const UINT32 tmp = ((UINT32)dst[0] << 24ULL) | (color & 0x00FFFFFFULL);
return FreeRDPWriteColor(dst, format, tmp);
}
case PIXEL_FORMAT_BGRX32:
case PIXEL_FORMAT_RGBX32:
case PIXEL_FORMAT_BGRA32:
case PIXEL_FORMAT_RGBA32:
{
const UINT32 tmp = ((UINT32)dst[3]) | (color & 0xFFFFFF00ULL);
return FreeRDPWriteColor(dst, format, tmp);
}
default:
return FreeRDPWriteColor(dst, format, color);
}
}
BOOL FreeRDPWriteColor(BYTE* WINPR_RESTRICT dst, UINT32 format, UINT32 color)
{
switch (FreeRDPGetBitsPerPixel(format))
{
case 32:
dst[0] = (BYTE)(color >> 24);
dst[1] = (BYTE)(color >> 16);
dst[2] = (BYTE)(color >> 8);
dst[3] = (BYTE)color;
break;
case 24:
dst[0] = (BYTE)(color >> 16);
dst[1] = (BYTE)(color >> 8);
dst[2] = (BYTE)color;
break;
case 16:
dst[1] = (BYTE)(color >> 8);
dst[0] = (BYTE)color;
break;
case 15:
if (!FreeRDPColorHasAlpha(format))
color = color & 0x7FFF;
dst[1] = (BYTE)(color >> 8);
dst[0] = (BYTE)color;
break;
case 8:
dst[0] = (BYTE)color;
break;
default:
WLog_ERR(TAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
return FALSE;
}
return TRUE;
}
UINT32 FreeRDPReadColor(const BYTE* WINPR_RESTRICT src, UINT32 format)
{
UINT32 color;
switch (FreeRDPGetBitsPerPixel(format))
{
case 32:
color =
((UINT32)src[0] << 24) | ((UINT32)src[1] << 16) | ((UINT32)src[2] << 8) | src[3];
break;
case 24:
color = ((UINT32)src[0] << 16) | ((UINT32)src[1] << 8) | src[2];
break;
case 16:
color = ((UINT32)src[1] << 8) | src[0];
break;
case 15:
color = ((UINT32)src[1] << 8) | src[0];
if (!FreeRDPColorHasAlpha(format))
color = color & 0x7FFF;
break;
case 8:
case 4:
case 1:
color = *src;
break;
default:
WLog_ERR(TAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
color = 0;
break;
}
return color;
}
UINT32 FreeRDPGetColor(UINT32 format, BYTE r, BYTE g, BYTE b, BYTE a)
{
UINT32 _r = r;
UINT32 _g = g;
UINT32 _b = b;
UINT32 _a = a;
UINT32 t;
switch (format)
{
/* 32bpp formats */
case PIXEL_FORMAT_ARGB32:
return (_a << 24) | (_r << 16) | (_g << 8) | _b;
case PIXEL_FORMAT_XRGB32:
return (_r << 16) | (_g << 8) | _b;
case PIXEL_FORMAT_ABGR32:
return (_a << 24) | (_b << 16) | (_g << 8) | _r;
case PIXEL_FORMAT_XBGR32:
return (_b << 16) | (_g << 8) | _r;
case PIXEL_FORMAT_RGBA32:
return (_r << 24) | (_g << 16) | (_b << 8) | _a;
case PIXEL_FORMAT_RGBX32:
return (_r << 24) | (_g << 16) | (_b << 8) | _a;
case PIXEL_FORMAT_BGRA32:
return (_b << 24) | (_g << 16) | (_r << 8) | _a;
case PIXEL_FORMAT_BGRX32:
return (_b << 24) | (_g << 16) | (_r << 8) | _a;
case PIXEL_FORMAT_RGBX32_DEPTH30:
// TODO: Not tested
t = (_r << 22) | (_g << 12) | (_b << 2);
// NOTE: Swapping byte-order because FreeRDPWriteColor written UINT32 in big-endian
return ((t & 0xff) << 24) | (((t >> 8) & 0xff) << 16) | (((t >> 16) & 0xff) << 8) |
(t >> 24);
case PIXEL_FORMAT_BGRX32_DEPTH30:
// NOTE: Swapping b and r channel (unknown reason)
t = (_r << 22) | (_g << 12) | (_b << 2);
// NOTE: Swapping byte-order because FreeRDPWriteColor written UINT32 in big-endian
return ((t & 0xff) << 24) | (((t >> 8) & 0xff) << 16) | (((t >> 16) & 0xff) << 8) |
(t >> 24);
/* 24bpp formats */
case PIXEL_FORMAT_RGB24:
return (_r << 16) | (_g << 8) | _b;
case PIXEL_FORMAT_BGR24:
return (_b << 16) | (_g << 8) | _r;
/* 16bpp formats */
case PIXEL_FORMAT_RGB16:
return (((_r >> 3) & 0x1F) << 11) | (((_g >> 2) & 0x3F) << 5) | ((_b >> 3) & 0x1F);
case PIXEL_FORMAT_BGR16:
return (((_b >> 3) & 0x1F) << 11) | (((_g >> 2) & 0x3F) << 5) | ((_r >> 3) & 0x1F);
case PIXEL_FORMAT_ARGB15:
return (((_r >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_b >> 3) & 0x1F) |
(_a ? 0x8000 : 0x0000);
case PIXEL_FORMAT_ABGR15:
return (((_b >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_r >> 3) & 0x1F) |
(_a ? 0x8000 : 0x0000);
/* 15bpp formats */
case PIXEL_FORMAT_RGB15:
return (((_r >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_b >> 3) & 0x1F);
case PIXEL_FORMAT_BGR15:
return (((_b >> 3) & 0x1F) << 10) | (((_g >> 3) & 0x1F) << 5) | ((_r >> 3) & 0x1F);
/* 8bpp formats */
case PIXEL_FORMAT_RGB8:
/* 4 bpp formats */
case PIXEL_FORMAT_A4:
/* 1bpp formats */
case PIXEL_FORMAT_MONO:
default:
WLog_ERR(TAG, "Unsupported format %s", FreeRDPGetColorFormatName(format));
return 0;
}
}
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