/**
* FreeRDP: A Remote Desktop Protocol Implementation
* RDP6 Planar Codec
*
* Copyright 2013 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 <winpr/crt.h>
#include <winpr/print.h>
#include <freerdp/primitives.h>
#include <freerdp/log.h>
#include <freerdp/codec/bitmap.h>
#include <freerdp/codec/planar.h>
#define TAG FREERDP_TAG("codec")
static INLINE BOOL freerdp_bitmap_planar_compress_plane_rle(
const BYTE* plane, UINT32 width, UINT32 height,
BYTE* outPlane, UINT32* dstSize);
static INLINE BYTE* freerdp_bitmap_planar_delta_encode_plane(
const BYTE* inPlane, UINT32 width, UINT32 height, BYTE* outPlane);
static INLINE INT32 planar_skip_plane_rle(const BYTE* pSrcData, UINT32 SrcSize,
UINT32 nWidth, UINT32 nHeight)
{
UINT32 x, y;
BYTE controlByte;
const BYTE* pRLE = pSrcData;
const BYTE* pEnd = &pSrcData[SrcSize];
for (y = 0; y < nHeight; y++)
{
for (x = 0; x < nWidth;)
{
int cRawBytes;
int nRunLength;
if (pRLE >= pEnd)
return -1;
controlByte = *pRLE++;
nRunLength = PLANAR_CONTROL_BYTE_RUN_LENGTH(controlByte);
cRawBytes = PLANAR_CONTROL_BYTE_RAW_BYTES(controlByte);
if (nRunLength == 1)
{
nRunLength = cRawBytes + 16;
cRawBytes = 0;
}
else if (nRunLength == 2)
{
nRunLength = cRawBytes + 32;
cRawBytes = 0;
}
pRLE += cRawBytes;
x += cRawBytes;
x += nRunLength;
if (x > nWidth)
return -1;
if (pRLE > pEnd)
return -1;
}
}
return (INT32)(pRLE - pSrcData);
}
static INLINE INT32 planar_decompress_plane_rle(const BYTE* pSrcData, UINT32 SrcSize,
BYTE* pDstData, INT32 nDstStep,
UINT32 nXDst, UINT32 nYDst,
UINT32 nWidth, UINT32 nHeight,
UINT32 nChannel, BOOL vFlip)
{
UINT32 x, y;
UINT32 pixel;
UINT32 cRawBytes;
UINT32 nRunLength;
INT32 deltaValue;
INT32 beg, end, inc;
BYTE controlByte;
BYTE* currentScanline;
BYTE* previousScanline;
const BYTE* srcp = pSrcData;
previousScanline = NULL;
if (vFlip)
{
beg = nHeight - 1;
end = -1;
inc = -1;
}
else
{
beg = 0;
end = nHeight;
inc = 1;
}
for (y = beg; y != end; y += inc)
{
BYTE* dstp = &pDstData[((nYDst + y) * nDstStep) + (nXDst * 4) + nChannel];
pixel = 0;
currentScanline = dstp;
for (x = 0; x < nWidth;)
{
controlByte = *srcp;
srcp++;
if ((srcp - pSrcData) > SrcSize)
{
WLog_ERR(TAG, "error reading input buffer");
return -1;
}
nRunLength = PLANAR_CONTROL_BYTE_RUN_LENGTH(controlByte);
cRawBytes = PLANAR_CONTROL_BYTE_RAW_BYTES(controlByte);
if (nRunLength == 1)
{
nRunLength = cRawBytes + 16;
cRawBytes = 0;
}
else if (nRunLength == 2)
{
nRunLength = cRawBytes + 32;
cRawBytes = 0;
}
if (((dstp + (cRawBytes + nRunLength)) - currentScanline) > nWidth * 4)
{
WLog_ERR(TAG, "too many pixels in scanline");
return -1;
}
if (!previousScanline)
{
/* first scanline, absolute values */
while (cRawBytes > 0)
{
pixel = *srcp;
srcp++;
*dstp = pixel;
dstp += 4;
x++;
cRawBytes--;
}
while (nRunLength > 0)
{
*dstp = pixel;
dstp += 4;
x++;
nRunLength--;
}
}
else
{
/* delta values relative to previous scanline */
while (cRawBytes > 0)
{
deltaValue = *srcp;
srcp++;
if (deltaValue & 1)
{
deltaValue = deltaValue >> 1;
deltaValue = deltaValue + 1;
pixel = -deltaValue;
}
else
{
deltaValue = deltaValue >> 1;
pixel = deltaValue;
}
deltaValue = previousScanline[x * 4] + pixel;
*dstp = deltaValue;
dstp += 4;
x++;
cRawBytes--;
}
while (nRunLength > 0)
{
deltaValue = previousScanline[x * 4] + pixel;
*dstp = deltaValue;
dstp += 4;
x++;
nRunLength--;
}
}
}
previousScanline = currentScanline;
}
return (INT32)(srcp - pSrcData);
}
static INLINE BOOL writeLine(BYTE** ppRgba, UINT32 DstFormat, UINT32 width, const BYTE** ppR,
const BYTE** ppG, const BYTE** ppB, const BYTE** ppA)
{
UINT32 x;
if (!ppRgba || !ppR || !ppG || !ppB)
return FALSE;
switch (DstFormat)
{
case PIXEL_FORMAT_BGRA32:
for (x = 0; x < width; x++)
{
*(*ppRgba)++ = *(*ppB)++;
*(*ppRgba)++ = *(*ppG)++;
*(*ppRgba)++ = *(*ppR)++;
*(*ppRgba)++ = *(*ppA)++;
}
return TRUE;
case PIXEL_FORMAT_BGRX32:
for (x = 0; x < width; x++)
{
*(*ppRgba)++ = *(*ppB)++;
*(*ppRgba)++ = *(*ppG)++;
*(*ppRgba)++ = *(*ppR)++;
*(*ppRgba)++ = 0xFF;
}
return TRUE;
default:
if (ppA)
{
for (x = 0; x < width; x++)
{
BYTE alpha = *(*ppA)++;
UINT32 color = FreeRDPGetColor(DstFormat, *(*ppR)++, *(*ppG)++, *(*ppB)++, alpha);
WriteColor(*ppRgba, DstFormat, color);
*ppRgba += GetBytesPerPixel(DstFormat);
}
}
else
{
const BYTE alpha = 0xFF;
for (x = 0; x < width; x++)
{
UINT32 color = FreeRDPGetColor(DstFormat, *(*ppR)++, *(*ppG)++, *(*ppB)++, alpha);
WriteColor(*ppRgba, DstFormat, color);
*ppRgba += GetBytesPerPixel(DstFormat);
}
}
return TRUE;
}
}
static INLINE BOOL planar_decompress_planes_raw(const BYTE* pSrcData[4],
BYTE* pDstData, UINT32 DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight,
BOOL vFlip)
{
INT32 y;
INT32 beg, end, inc;
const BYTE* pR = pSrcData[0];
const BYTE* pG = pSrcData[1];
const BYTE* pB = pSrcData[2];
const BYTE* pA = pSrcData[3];
if (vFlip)
{
beg = nHeight - 1;
end = -1;
inc = -1;
}
else
{
beg = 0;
end = nHeight;
inc = 1;
}
for (y = beg; y != end; y += inc)
{
BYTE* pRGB = &pDstData[((nYDst + y) * nDstStep) + (nXDst * GetBytesPerPixel(
DstFormat))];
if (!writeLine(&pRGB, DstFormat, nWidth, &pR, &pG, &pB, &pA))
return FALSE;
}
return TRUE;
}
BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
const BYTE* pSrcData, UINT32 SrcSize,
UINT32 nSrcWidth, UINT32 nSrcHeight,
BYTE* pDstData, UINT32 DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst,
UINT32 nDstWidth, UINT32 nDstHeight, BOOL vFlip)
{
BOOL cs;
BOOL rle;
UINT32 cll;
BOOL alpha;
BOOL useAlpha = FALSE;
INT32 status;
const BYTE* srcp;
UINT32 subSize;
UINT32 subWidth;
UINT32 subHeight;
UINT32 planeSize;
INT32 rleSizes[4] = { 0, 0, 0, 0 };
UINT32 rawSizes[4];
UINT32 rawWidths[4];
UINT32 rawHeights[4];
BYTE FormatHeader;
const BYTE* planes[4];
const UINT32 w = MIN(nSrcWidth, nDstWidth);
const UINT32 h = MIN(nSrcHeight, nDstHeight);
const primitives_t* prims = primitives_get();
if (nDstStep <= 0)
nDstStep = nDstWidth * GetBytesPerPixel(DstFormat);
srcp = pSrcData;
if (!pDstData)
{
WLog_ERR(TAG, "Invalid argument pDstData=NULL");
return FALSE;
}
FormatHeader = *srcp++;
cll = (FormatHeader & PLANAR_FORMAT_HEADER_CLL_MASK);
cs = (FormatHeader & PLANAR_FORMAT_HEADER_CS) ? TRUE : FALSE;
rle = (FormatHeader & PLANAR_FORMAT_HEADER_RLE) ? TRUE : FALSE;
alpha = (FormatHeader & PLANAR_FORMAT_HEADER_NA) ? FALSE : TRUE;
if (alpha)
useAlpha = ColorHasAlpha(DstFormat);
//WLog_INFO(TAG, "CLL: %"PRIu32" CS: %"PRIu8" RLE: %"PRIu8" ALPHA: %"PRIu8"", cll, cs, rle, alpha);
if (!cll && cs)
return FALSE; /* Chroma subsampling requires YCoCg */
subWidth = (nSrcWidth / 2) + (nSrcWidth % 2);
subHeight = (nSrcHeight / 2) + (nSrcHeight % 2);
planeSize = nSrcWidth * nSrcHeight;
subSize = subWidth * subHeight;
if (!cs)
{
rawSizes[0] = planeSize; /* LumaOrRedPlane */
rawWidths[0] = nSrcWidth;
rawHeights[0] = nSrcHeight;
rawSizes[1] = planeSize; /* OrangeChromaOrGreenPlane */
rawWidths[1] = nSrcWidth;
rawHeights[1] = nSrcHeight;
rawSizes[2] = planeSize; /* GreenChromaOrBluePlane */
rawWidths[2] = nSrcWidth;
rawHeights[2] = nSrcHeight;
rawSizes[3] = planeSize; /* AlphaPlane */
rawWidths[3] = nSrcWidth;
rawHeights[3] = nSrcHeight;
}
else /* Chroma Subsampling */
{
rawSizes[0] = planeSize; /* LumaOrRedPlane */
rawWidths[0] = nSrcWidth;
rawHeights[0] = nSrcHeight;
rawSizes[1] = subSize; /* OrangeChromaOrGreenPlane */
rawWidths[1] = subWidth;
rawHeights[1] = subHeight;
rawSizes[2] = subSize; /* GreenChromaOrBluePlane */
rawWidths[2] = subWidth;
rawHeights[2] = subHeight;
rawSizes[3] = planeSize; /* AlphaPlane */
rawWidths[3] = nSrcWidth;
rawHeights[3] = nSrcHeight;
}
if (!rle) /* RAW */
{
if (alpha)
{
if ((SrcSize - (srcp - pSrcData)) < (planeSize * 4))
return FALSE;
planes[3] = srcp; /* AlphaPlane */
planes[0] = planes[3] + rawSizes[3]; /* LumaOrRedPlane */
planes[1] = planes[0] + rawSizes[0]; /* OrangeChromaOrGreenPlane */
planes[2] = planes[1] + rawSizes[1]; /* GreenChromaOrBluePlane */
if ((planes[2] + rawSizes[2]) > &pSrcData[SrcSize])
return FALSE;
}
else
{
if ((SrcSize - (srcp - pSrcData)) < (planeSize * 3))
return FALSE;
planes[0] = srcp; /* LumaOrRedPlane */
planes[1] = planes[0] + rawSizes[0]; /* OrangeChromaOrGreenPlane */
planes[2] = planes[1] + rawSizes[1]; /* GreenChromaOrBluePlane */
if ((planes[2] + rawSizes[2]) > &pSrcData[SrcSize])
return FALSE;
}
}
else /* RLE */
{
if (alpha)
{
planes[3] = srcp;
rleSizes[3] = planar_skip_plane_rle(planes[3], SrcSize - (planes[3] - pSrcData),
rawWidths[3], rawHeights[3]); /* AlphaPlane */
if (rleSizes[3] < 0)
return FALSE;
planes[0] = planes[3] + rleSizes[3];
}
else
planes[0] = srcp;
rleSizes[0] = planar_skip_plane_rle(planes[0], SrcSize - (planes[0] - pSrcData),
rawWidths[0], rawHeights[0]); /* RedPlane */
if (rleSizes[0] < 0)
return FALSE;
planes[1] = planes[0] + rleSizes[0];
rleSizes[1] = planar_skip_plane_rle(planes[1], SrcSize - (planes[1] - pSrcData),
rawWidths[1], rawHeights[1]); /* GreenPlane */
if (rleSizes[1] < 1)
return FALSE;
planes[2] = planes[1] + rleSizes[1];
rleSizes[2] = planar_skip_plane_rle(planes[2], SrcSize - (planes[2] - pSrcData),
rawWidths[2], rawHeights[2]); /* BluePlane */
if (rleSizes[2] < 1)
return FALSE;
}
if (!cll) /* RGB */
{
UINT32 TempFormat;
BYTE* pTempData = pDstData;
UINT32 nTempStep = nDstStep;
if (useAlpha)
TempFormat = PIXEL_FORMAT_BGRA32;
else
TempFormat = PIXEL_FORMAT_BGRX32;
if ((TempFormat != DstFormat) || (nSrcWidth != nDstWidth)
|| (nSrcHeight != nDstHeight))
{
pTempData = planar->pTempData;
nTempStep = planar->nTempStep;
}
if (!rle) /* RAW */
{
if (!planar_decompress_planes_raw(planes, pTempData, TempFormat, nTempStep,
nXDst, nYDst, nSrcWidth, nSrcHeight, vFlip))
return FALSE;
if (alpha)
srcp += rawSizes[0] + rawSizes[1] + rawSizes[2] + rawSizes[3];
else /* NoAlpha */
srcp += rawSizes[0] + rawSizes[1] + rawSizes[2];
if ((SrcSize - (srcp - pSrcData)) == 1)
srcp++; /* pad */
}
else /* RLE */
{
status = planar_decompress_plane_rle(planes[0], rleSizes[0],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 2,
vFlip); /* RedPlane */
if (status < 0)
return FALSE;
status = planar_decompress_plane_rle(planes[1], rleSizes[1],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 1,
vFlip); /* GreenPlane */
if (status < 0)
return FALSE;
status = planar_decompress_plane_rle(planes[2], rleSizes[2],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 0,
vFlip); /* BluePlane */
if (status < 0)
return FALSE;
srcp += rleSizes[0] + rleSizes[1] + rleSizes[2];
if (useAlpha)
{
status = planar_decompress_plane_rle(planes[3], rleSizes[3],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 3,
vFlip); /* AlphaPlane */
if (status < 0)
return FALSE;
}
if (alpha)
srcp += rleSizes[3];
}
if (pTempData != pDstData)
{
if (!freerdp_image_copy(pDstData, DstFormat, nDstStep, nXDst, nYDst, w,
h, pTempData,
TempFormat, nTempStep, nXDst, nYDst, NULL, FREERDP_FLIP_NONE))
return FALSE;
}
}
else /* YCoCg */
{
UINT32 TempFormat;
BYTE* pTempData = planar->pTempData;
UINT32 nTempStep = planar->nTempStep;
if (useAlpha)
TempFormat = PIXEL_FORMAT_BGRA32;
else
TempFormat = PIXEL_FORMAT_BGRX32;
if (!pTempData)
return FALSE;
if (cs)
{
WLog_ERR(TAG, "Chroma subsampling unimplemented");
return FALSE;
}
if (!rle) /* RAW */
{
if (!planar_decompress_planes_raw(planes, pTempData, TempFormat, nTempStep,
nXDst, nYDst, nSrcWidth, nSrcHeight, vFlip))
return FALSE;
if (alpha)
srcp += rawSizes[0] + rawSizes[1] + rawSizes[2] + rawSizes[3];
else /* NoAlpha */
srcp += rawSizes[0] + rawSizes[1] + rawSizes[2];
if ((SrcSize - (srcp - pSrcData)) == 1)
srcp++; /* pad */
}
else /* RLE */
{
if (useAlpha)
{
status = planar_decompress_plane_rle(planes[3], rleSizes[3],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 3,
vFlip); /* AlphaPlane */
if (status < 0)
return FALSE;
}
if (alpha)
srcp += rleSizes[3];
status = planar_decompress_plane_rle(planes[0], rleSizes[0],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 2,
vFlip); /* LumaPlane */
if (status < 0)
return FALSE;
status = planar_decompress_plane_rle(planes[1], rleSizes[1],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 1,
vFlip); /* OrangeChromaPlane */
if (status < 0)
return FALSE;
status = planar_decompress_plane_rle(planes[2], rleSizes[2],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 0,
vFlip); /* GreenChromaPlane */
if (status < 0)
return FALSE;
srcp += rleSizes[0] + rleSizes[1] + rleSizes[2];
}
if (prims->YCoCgToRGB_8u_AC4R(pTempData, nTempStep, pDstData, DstFormat,
nDstStep,
w, h, cll, useAlpha) != PRIMITIVES_SUCCESS)
return FALSE;
}
return (SrcSize == (srcp - pSrcData)) ? TRUE : FALSE;
}
static INLINE BOOL freerdp_split_color_planes(const BYTE* data, UINT32 format,
UINT32 width, UINT32 height,
UINT32 scanline, BYTE* planes[4])
{
INT32 i, j, k;
k = 0;
if (scanline == 0)
scanline = width * GetBytesPerPixel(format);
for (i = height - 1; i >= 0; i--)
{
const BYTE* pixel = &data[scanline * i];
for (j = 0; j < width; j++)
{
const UINT32 color = ReadColor(pixel, format);
pixel += GetBytesPerPixel(format);
SplitColor(color, format, &planes[1][k], &planes[2][k],
&planes[3][k], &planes[0][k], NULL);
k++;
}
}
return TRUE;
}
static INLINE UINT32 freerdp_bitmap_planar_write_rle_bytes(
const BYTE* pInBuffer, UINT32 cRawBytes, UINT32 nRunLength,
BYTE* pOutBuffer, UINT32 outBufferSize)
{
const BYTE* pInput;
BYTE* pOutput;
BYTE controlByte;
UINT32 nBytesToWrite;
pInput = pInBuffer;
pOutput = pOutBuffer;
if (!cRawBytes && !nRunLength)
return 0;
if (nRunLength < 3)
{
cRawBytes += nRunLength;
nRunLength = 0;
}
while (cRawBytes)
{
if (cRawBytes < 16)
{
if (nRunLength > 15)
{
if (nRunLength < 18)
{
controlByte = PLANAR_CONTROL_BYTE(13, cRawBytes);
nRunLength -= 13;
cRawBytes = 0;
}
else
{
controlByte = PLANAR_CONTROL_BYTE(15, cRawBytes);
nRunLength -= 15;
cRawBytes = 0;
}
}
else
{
controlByte = PLANAR_CONTROL_BYTE(nRunLength, cRawBytes);
nRunLength = 0;
cRawBytes = 0;
}
}
else
{
controlByte = PLANAR_CONTROL_BYTE(0, 15);
cRawBytes -= 15;
}
if (outBufferSize < 1)
return 0;
outBufferSize--;
*pOutput = controlByte;
pOutput++;
nBytesToWrite = (int)(controlByte >> 4);
if (nBytesToWrite)
{
if (outBufferSize < nBytesToWrite)
return 0;
outBufferSize -= nBytesToWrite;
CopyMemory(pOutput, pInput, nBytesToWrite);
pOutput += nBytesToWrite;
pInput += nBytesToWrite;
}
}
while (nRunLength)
{
if (nRunLength > 47)
{
if (nRunLength < 50)
{
controlByte = PLANAR_CONTROL_BYTE(2, 13);
nRunLength -= 45;
}
else
{
controlByte = PLANAR_CONTROL_BYTE(2, 15);
nRunLength -= 47;
}
}
else if (nRunLength > 31)
{
controlByte = PLANAR_CONTROL_BYTE(2, (nRunLength - 32));
nRunLength = 0;
}
else if (nRunLength > 15)
{
controlByte = PLANAR_CONTROL_BYTE(1, (nRunLength - 16));
nRunLength = 0;
}
else
{
controlByte = PLANAR_CONTROL_BYTE(nRunLength, 0);
nRunLength = 0;
}
if (outBufferSize < 1)
return 0;
--outBufferSize;
*pOutput = controlByte;
pOutput++;
}
return (pOutput - pOutBuffer);
}
static INLINE UINT32 freerdp_bitmap_planar_encode_rle_bytes(const BYTE* pInBuffer,
UINT32 inBufferSize,
BYTE* pOutBuffer,
UINT32 outBufferSize)
{
BYTE symbol;
const BYTE* pInput;
BYTE* pOutput;
const BYTE* pBytes;
UINT32 cRawBytes;
UINT32 nRunLength;
UINT32 bSymbolMatch;
UINT32 nBytesWritten;
UINT32 nTotalBytesWritten;
symbol = 0;
cRawBytes = 0;
nRunLength = 0;
pInput = pInBuffer;
pOutput = pOutBuffer;
nTotalBytesWritten = 0;
if (!outBufferSize)
return 0;
do
{
if (!inBufferSize)
break;
bSymbolMatch = (symbol == *pInput) ? TRUE : FALSE;
symbol = *pInput;
pInput++;
inBufferSize--;
if (nRunLength && !bSymbolMatch)
{
if (nRunLength < 3)
{
cRawBytes += nRunLength;
nRunLength = 0;
}
else
{
pBytes = pInput - (cRawBytes + nRunLength + 1);
nBytesWritten = freerdp_bitmap_planar_write_rle_bytes(
pBytes, cRawBytes,
nRunLength, pOutput,
outBufferSize);
nRunLength = 0;
if (!nBytesWritten || (nBytesWritten > outBufferSize))
return nRunLength;
nTotalBytesWritten += nBytesWritten;
outBufferSize -= nBytesWritten;
pOutput += nBytesWritten;
cRawBytes = 0;
}
}
nRunLength += bSymbolMatch;
cRawBytes += (!bSymbolMatch) ? TRUE : FALSE;
}
while (outBufferSize);
if (cRawBytes || nRunLength)
{
pBytes = pInput - (cRawBytes + nRunLength);
nBytesWritten = freerdp_bitmap_planar_write_rle_bytes(pBytes,
cRawBytes, nRunLength, pOutput, outBufferSize);
if (!nBytesWritten)
return 0;
nTotalBytesWritten += nBytesWritten;
}
if (inBufferSize)
return 0;
return nTotalBytesWritten;
}
BOOL freerdp_bitmap_planar_compress_plane_rle(const BYTE* inPlane,
UINT32 width, UINT32 height,
BYTE* outPlane, UINT32* dstSize)
{
UINT32 index;
const BYTE* pInput;
BYTE* pOutput;
UINT32 outBufferSize;
UINT32 nBytesWritten;
UINT32 nTotalBytesWritten;
if (!outPlane)
return FALSE;
index = 0;
pInput = inPlane;
pOutput = outPlane;
outBufferSize = *dstSize;
nTotalBytesWritten = 0;
while (outBufferSize)
{
nBytesWritten = freerdp_bitmap_planar_encode_rle_bytes(
pInput, width, pOutput, outBufferSize);
if ((!nBytesWritten) || (nBytesWritten > outBufferSize))
return FALSE;
outBufferSize -= nBytesWritten;
nTotalBytesWritten += nBytesWritten;
pOutput += nBytesWritten;
pInput += width;
index++;
if (index >= height)
break;
}
*dstSize = nTotalBytesWritten;
return TRUE;
}
static INLINE BOOL freerdp_bitmap_planar_compress_planes_rle(
BYTE* inPlanes[4], UINT32 width, UINT32 height,
BYTE* outPlanes, UINT32* dstSizes, BOOL skipAlpha)
{
UINT32 outPlanesSize = width * height * 4;
/* AlphaPlane */
if (skipAlpha)
{
dstSizes[0] = 0;
}
else
{
dstSizes[0] = outPlanesSize;
if (!freerdp_bitmap_planar_compress_plane_rle(
inPlanes[0], width, height, outPlanes, &dstSizes[0]))
return FALSE;
outPlanes += dstSizes[0];
outPlanesSize -= dstSizes[0];
}
/* LumaOrRedPlane */
dstSizes[1] = outPlanesSize;
if (!freerdp_bitmap_planar_compress_plane_rle(inPlanes[1], width, height,
outPlanes, &dstSizes[1]))
return FALSE;
outPlanes += dstSizes[1];
outPlanesSize -= dstSizes[1];
/* OrangeChromaOrGreenPlane */
dstSizes[2] = outPlanesSize;
if (!freerdp_bitmap_planar_compress_plane_rle(inPlanes[2], width, height,
outPlanes, &dstSizes[2]))
return FALSE;
outPlanes += dstSizes[2];
outPlanesSize -= dstSizes[2];
/* GreenChromeOrBluePlane */
dstSizes[3] = outPlanesSize;
if (!freerdp_bitmap_planar_compress_plane_rle(inPlanes[3], width, height,
outPlanes, &dstSizes[3]))
return FALSE;
return TRUE;
}
BYTE* freerdp_bitmap_planar_delta_encode_plane(const BYTE* inPlane,
UINT32 width, UINT32 height,
BYTE* outPlane)
{
char s2c;
INT32 delta;
UINT32 y, x;
BYTE* outPtr;
const BYTE* srcPtr, *prevLinePtr;
if (!outPlane)
{
if (width * height == 0)
return NULL;
if (!(outPlane = (BYTE*) calloc(height, width)))
return NULL;
}
// first line is copied as is
CopyMemory(outPlane, inPlane, width);
outPtr = outPlane + width;
srcPtr = inPlane + width;
prevLinePtr = inPlane;
for (y = 1; y < height; y++)
{
for (x = 0; x < width; x++, outPtr++, srcPtr++, prevLinePtr++)
{
delta = *srcPtr - *prevLinePtr;
s2c = (delta >= 0) ? (char) delta : (char)(~((BYTE)(-delta)) + 1);
s2c = (s2c >= 0) ? (s2c << 1) : (char)(((~((BYTE) s2c) + 1) << 1) - 1);
*outPtr = (BYTE)s2c;
}
}
return outPlane;
}
static INLINE BOOL freerdp_bitmap_planar_delta_encode_planes(BYTE* inPlanes[4],
UINT32 width, UINT32 height,
BYTE* outPlanes[4])
{
UINT32 i;
for (i = 0; i < 4; i++)
{
outPlanes[i] = freerdp_bitmap_planar_delta_encode_plane(
inPlanes[i], width, height, outPlanes[i]);
if (!outPlanes[i])
return FALSE;
}
return TRUE;
}
BYTE* freerdp_bitmap_compress_planar(BITMAP_PLANAR_CONTEXT* context,
const BYTE* data, UINT32 format,
UINT32 width, UINT32 height, UINT32 scanline,
BYTE* dstData, UINT32* pDstSize)
{
UINT32 size;
BYTE* dstp;
UINT32 planeSize;
UINT32 dstSizes[4] = { 0 };
BYTE FormatHeader = 0;
if (!context || !context->rlePlanesBuffer)
return NULL;
if (context->AllowSkipAlpha)
FormatHeader |= PLANAR_FORMAT_HEADER_NA;
planeSize = width * height;
if (!freerdp_split_color_planes(data, format, width, height, scanline,
context->planes))
return NULL;
if (context->AllowRunLengthEncoding)
{
if (!freerdp_bitmap_planar_delta_encode_planes(
context->planes, width, height,
context->deltaPlanes))
return NULL;
if (!freerdp_bitmap_planar_compress_planes_rle(
context->deltaPlanes, width, height,
context->rlePlanesBuffer, dstSizes,
context->AllowSkipAlpha))
return NULL;
{
int offset = 0;
FormatHeader |= PLANAR_FORMAT_HEADER_RLE;
context->rlePlanes[0] = &context->rlePlanesBuffer[offset];
offset += dstSizes[0];
context->rlePlanes[1] = &context->rlePlanesBuffer[offset];
offset += dstSizes[1];
context->rlePlanes[2] = &context->rlePlanesBuffer[offset];
offset += dstSizes[2];
context->rlePlanes[3] = &context->rlePlanesBuffer[offset];
//WLog_DBG(TAG, "R: [%"PRIu32"/%"PRIu32"] G: [%"PRIu32"/%"PRIu32"] B: [%"PRIu32"/%"PRIu32"]",
// dstSizes[1], planeSize, dstSizes[2], planeSize, dstSizes[3], planeSize);
}
}
if (FormatHeader & PLANAR_FORMAT_HEADER_RLE)
{
if (!context->AllowRunLengthEncoding)
return NULL;
if (context->rlePlanes[0] == NULL)
return NULL;
if (context->rlePlanes[1] == NULL)
return NULL;
if (context->rlePlanes[2] == NULL)
return NULL;
if (context->rlePlanes[3] == NULL)
return NULL;
}
if (!dstData)
{
size = 1;
if (!(FormatHeader & PLANAR_FORMAT_HEADER_NA))
{
if (FormatHeader & PLANAR_FORMAT_HEADER_RLE)
size += dstSizes[0];
else
size += planeSize;
}
if (FormatHeader & PLANAR_FORMAT_HEADER_RLE)
size += (dstSizes[1] + dstSizes[2] + dstSizes[3]);
else
size += (planeSize * 3);
if (!(FormatHeader & PLANAR_FORMAT_HEADER_RLE))
size++;
dstData = malloc(size);
if (!dstData)
return NULL;
*pDstSize = size;
}
dstp = dstData;
*dstp = FormatHeader; /* FormatHeader */
dstp++;
/* AlphaPlane */
if (!(FormatHeader & PLANAR_FORMAT_HEADER_NA))
{
if (FormatHeader & PLANAR_FORMAT_HEADER_RLE)
{
CopyMemory(dstp, context->rlePlanes[0], dstSizes[0]); /* Alpha */
dstp += dstSizes[0];
}
else
{
CopyMemory(dstp, context->planes[0], planeSize); /* Alpha */
dstp += planeSize;
}
}
/* LumaOrRedPlane */
if (FormatHeader & PLANAR_FORMAT_HEADER_RLE)
{
CopyMemory(dstp, context->rlePlanes[1], dstSizes[1]); /* Red */
dstp += dstSizes[1];
}
else
{
CopyMemory(dstp, context->planes[1], planeSize); /* Red */
dstp += planeSize;
}
/* OrangeChromaOrGreenPlane */
if (FormatHeader & PLANAR_FORMAT_HEADER_RLE)
{
CopyMemory(dstp, context->rlePlanes[2], dstSizes[2]); /* Green */
dstp += dstSizes[2];
}
else
{
CopyMemory(dstp, context->planes[2], planeSize); /* Green */
dstp += planeSize;
}
/* GreenChromeOrBluePlane */
if (FormatHeader & PLANAR_FORMAT_HEADER_RLE)
{
CopyMemory(dstp, context->rlePlanes[3], dstSizes[3]); /* Blue */
dstp += dstSizes[3];
}
else
{
CopyMemory(dstp, context->planes[3], planeSize); /* Blue */
dstp += planeSize;
}
/* Pad1 (1 byte) */
if (!(FormatHeader & PLANAR_FORMAT_HEADER_RLE))
{
*dstp = 0;
dstp++;
}
size = (dstp - dstData);
*pDstSize = size;
return dstData;
}
BOOL freerdp_bitmap_planar_context_reset(
BITMAP_PLANAR_CONTEXT* context, UINT32 width, UINT32 height)
{
if (!context)
return FALSE;
context->maxWidth = width;
context->maxHeight = height;
context->maxPlaneSize = context->maxWidth * context->maxHeight;
context->nTempStep = context->maxWidth * 4;
free(context->planesBuffer);
free(context->pTempData);
free(context->deltaPlanesBuffer);
free(context->rlePlanesBuffer);
context->planesBuffer = calloc(context->maxPlaneSize, 4);
context->pTempData = calloc(context->maxPlaneSize, 4);
context->deltaPlanesBuffer = calloc(context->maxPlaneSize, 4);
context->rlePlanesBuffer = calloc(context->maxPlaneSize, 4);
if (!context->planesBuffer || !context->pTempData ||
!context->deltaPlanesBuffer || !context->rlePlanesBuffer)
return FALSE;
context->planes[0] = &context->planesBuffer[context->maxPlaneSize * 0];
context->planes[1] = &context->planesBuffer[context->maxPlaneSize * 1];
context->planes[2] = &context->planesBuffer[context->maxPlaneSize * 2];
context->planes[3] = &context->planesBuffer[context->maxPlaneSize * 3];
context->deltaPlanes[0] = &context->deltaPlanesBuffer[context->maxPlaneSize *
0];
context->deltaPlanes[1] = &context->deltaPlanesBuffer[context->maxPlaneSize *
1];
context->deltaPlanes[2] = &context->deltaPlanesBuffer[context->maxPlaneSize *
2];
context->deltaPlanes[3] = &context->deltaPlanesBuffer[context->maxPlaneSize *
3];
return TRUE;
}
BITMAP_PLANAR_CONTEXT* freerdp_bitmap_planar_context_new(
DWORD flags, UINT32 maxWidth, UINT32 maxHeight)
{
BITMAP_PLANAR_CONTEXT* context;
context = (BITMAP_PLANAR_CONTEXT*) calloc(1, sizeof(BITMAP_PLANAR_CONTEXT));
if (!context)
return NULL;
if (flags & PLANAR_FORMAT_HEADER_NA)
context->AllowSkipAlpha = TRUE;
if (flags & PLANAR_FORMAT_HEADER_RLE)
context->AllowRunLengthEncoding = TRUE;
if (flags & PLANAR_FORMAT_HEADER_CS)
context->AllowColorSubsampling = TRUE;
context->ColorLossLevel = flags & PLANAR_FORMAT_HEADER_CLL_MASK;
if (context->ColorLossLevel)
context->AllowDynamicColorFidelity = TRUE;
if (!freerdp_bitmap_planar_context_reset(context, maxWidth, maxHeight))
{
freerdp_bitmap_planar_context_free(context);
return NULL;
}
return context;
}
void freerdp_bitmap_planar_context_free(BITMAP_PLANAR_CONTEXT* context)
{
if (!context)
return;
free(context->pTempData);
free(context->planesBuffer);
free(context->deltaPlanesBuffer);
free(context->rlePlanesBuffer);
free(context);
}