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FreeRDP/libfreerdp/codec/clear.c

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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* ClearCodec Bitmap Compression
*
* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* 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 <winpr/bitstream.h>
#include <freerdp/codec/color.h>
#include <freerdp/codec/clear.h>
static UINT32 CLEAR_LOG2_FLOOR[256] =
{
0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
};
static BYTE CLEAR_8BIT_MASKS[9] =
{
0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF
};
int clear_decompress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize,
BYTE** ppDstData, DWORD DstFormat, int nDstStep, int nXDst, int nYDst, int nWidth, int nHeight)
{
UINT32 i;
UINT32 x, y;
UINT32 count;
UINT32 color;
int nXDstRel;
int nYDstRel;
int nSrcStep;
BYTE seqNumber;
BYTE glyphFlags;
BYTE* glyphData;
UINT32 offset = 0;
UINT16 glyphIndex = 0;
BYTE* pDstData = NULL;
UINT32 residualByteCount;
UINT32 bandsByteCount;
UINT32 subcodecByteCount;
UINT32 runLengthFactor;
UINT32 pixelIndex = 0;
UINT32 pixelCount = 0;
BYTE* pSrcPixel8 = NULL;
BYTE* pDstPixel8 = NULL;
UINT32* pSrcPixel32 = NULL;
UINT32* pDstPixel32 = NULL;
CLEAR_GLYPH_ENTRY* glyphEntry;
if (!ppDstData)
return -1001;
pDstData = *ppDstData;
if (!pDstData)
return -1002;
if (SrcSize < 2)
return -1003;
if ((nWidth > 0xFFFF) || (nHeight > 0xFFFF))
return -1004;
glyphFlags = pSrcData[0];
seqNumber = pSrcData[1];
offset += 2;
if (seqNumber != clear->seqNumber)
return -1005;
clear->seqNumber = (seqNumber + 1) % 256;
if (glyphFlags & CLEARCODEC_FLAG_CACHE_RESET)
{
clear->VBarStorageCursor = 0;
clear->ShortVBarStorageCursor = 0;
}
if ((glyphFlags & CLEARCODEC_FLAG_GLYPH_HIT) && !(glyphFlags & CLEARCODEC_FLAG_GLYPH_INDEX))
return -1006;
if (glyphFlags & CLEARCODEC_FLAG_GLYPH_INDEX)
{
if ((nWidth * nHeight) > (1024 * 1024))
return -1007;
if (SrcSize < 4)
return -1008;
glyphIndex = *((UINT16*) &pSrcData[2]);
offset += 2;
if (glyphIndex >= 4000)
return -1009;
if (glyphFlags & CLEARCODEC_FLAG_GLYPH_HIT)
{
glyphEntry = &(clear->GlyphCache[glyphIndex]);
glyphData = (BYTE*) glyphEntry->pixels;
if (!glyphData)
return -1010;
if ((nWidth * nHeight) > (int) glyphEntry->count)
return -1011;
nSrcStep = nWidth * 4;
pSrcPixel8 = glyphData;
pDstPixel8 = &pDstData[(nYDst * nDstStep) + (nXDst * 4)];
for (y = 0; y < (UINT32) nHeight; y++)
{
CopyMemory(pDstPixel8, pSrcPixel8, nSrcStep);
pSrcPixel8 += nSrcStep;
pDstPixel8 += nDstStep;
}
return 1; /* Finish */
}
}
/* Read composition payload header parameters */
if ((SrcSize - offset) < 12)
return -1012;
residualByteCount = *((UINT32*) &pSrcData[offset]);
bandsByteCount = *((UINT32*) &pSrcData[offset + 4]);
subcodecByteCount = *((UINT32*) &pSrcData[offset + 8]);
offset += 12;
//WLog_DBG(TAG, "residualByteCount: %d bandsByteCount: %d subcodecByteCount: %d\n",
// residualByteCount, bandsByteCount, subcodecByteCount);
if (residualByteCount > 0)
{
UINT32 suboffset;
BYTE* residualData;
if ((SrcSize - offset) < residualByteCount)
return -1013;
suboffset = 0;
residualData = &pSrcData[offset];
if ((nWidth * nHeight * 4) > (int) clear->TempSize)
{
clear->TempSize = (nWidth * nHeight * 4);
clear->TempBuffer = (BYTE*) realloc(clear->TempBuffer, clear->TempSize);
if (!clear->TempBuffer)
return -1014;
}
pixelIndex = 0;
pixelCount = nWidth * nHeight;
pDstPixel32 = (UINT32*) clear->TempBuffer;
while (suboffset < residualByteCount)
{
if ((residualByteCount - suboffset) < 4)
return -1015;
color = RGB32(residualData[suboffset + 2], residualData[suboffset + 1], residualData[suboffset + 0]);
suboffset += 3;
runLengthFactor = (UINT32) residualData[suboffset];
suboffset++;
if (runLengthFactor >= 0xFF)
{
if ((residualByteCount - suboffset) < 2)
return -1016;
runLengthFactor = (UINT32) *((UINT16*) &residualData[suboffset]);
suboffset += 2;
if (runLengthFactor >= 0xFFFF)
{
if ((residualByteCount - suboffset) < 4)
return -1017;
runLengthFactor = *((UINT32*) &residualData[suboffset]);
suboffset += 4;
}
}
if ((pixelIndex + runLengthFactor) > pixelCount)
return -1018;
for (i = 0; i < runLengthFactor; i++)
{
*pDstPixel32 = color;
pDstPixel32++;
}
pixelIndex += runLengthFactor;
}
nSrcStep = nWidth * 4;
pSrcPixel8 = clear->TempBuffer;
pDstPixel8 = &pDstData[(nYDst * nDstStep) + (nXDst * 4)];
if (pixelIndex != pixelCount)
return -1019;
for (y = 0; y < (UINT32) nHeight; y++)
{
CopyMemory(pDstPixel8, pSrcPixel8, nSrcStep);
pSrcPixel8 += nSrcStep;
pDstPixel8 += nDstStep;
}
offset += residualByteCount;
}
if (bandsByteCount > 0)
{
BYTE* bandsData;
UINT32 suboffset;
if ((SrcSize - offset) < bandsByteCount)
return -1020;
suboffset = 0;
bandsData = &pSrcData[offset];
while (suboffset < bandsByteCount)
{
UINT16 xStart;
UINT16 xEnd;
UINT16 yStart;
UINT16 yEnd;
BYTE* vBar;
BOOL vBarUpdate;
UINT32 colorBkg;
UINT16 vBarHeader;
UINT16 vBarIndex;
UINT16 vBarYOn;
UINT16 vBarYOff;
UINT32 vBarCount;
UINT32 vBarHeight;
UINT32 vBarPixelCount;
UINT32 vBarShortPixelCount;
CLEAR_VBAR_ENTRY* vBarEntry;
CLEAR_VBAR_ENTRY* vBarShortEntry;
if ((bandsByteCount - suboffset) < 11)
return -1021;
xStart = *((UINT16*) &bandsData[suboffset]);
xEnd = *((UINT16*) &bandsData[suboffset + 2]);
yStart = *((UINT16*) &bandsData[suboffset + 4]);
yEnd = *((UINT16*) &bandsData[suboffset + 6]);
suboffset += 8;
colorBkg = RGB32(bandsData[suboffset + 2], bandsData[suboffset + 1], bandsData[suboffset + 0]);
suboffset += 3;
if (xEnd < xStart)
return -1022;
if (yEnd < yStart)
return -1023;
vBarCount = (xEnd - xStart) + 1;
for (i = 0; i < vBarCount; i++)
{
vBarUpdate = FALSE;
vBar = &bandsData[suboffset];
if ((bandsByteCount - suboffset) < 2)
return -1024;
vBarHeader = *((UINT16*) &vBar[0]);
suboffset += 2;
vBarHeight = (yEnd - yStart + 1);
if (vBarHeight > 52)
return -1025;
if ((vBarHeader & 0xC000) == 0x4000) /* SHORT_VBAR_CACHE_HIT */
{
vBarIndex = (vBarHeader & 0x3FFF);
if (vBarIndex >= 16384)
return -1026;
if ((bandsByteCount - suboffset) < 1)
return -1027;
vBarYOn = vBar[2];
suboffset += 1;
vBarShortEntry = &(clear->ShortVBarStorage[vBarIndex]);
if (!vBarShortEntry)
return -1028;
vBarShortPixelCount = vBarShortEntry->count;
vBarUpdate = TRUE;
}
else if ((vBarHeader & 0xC000) == 0x0000) /* SHORT_VBAR_CACHE_MISS */
{
vBarYOn = (vBarHeader & 0xFF);
vBarYOff = ((vBarHeader >> 8) & 0x3F);
if (vBarYOff < vBarYOn)
return -1029;
pSrcPixel8 = &vBar[2];
vBarShortPixelCount = (vBarYOff - vBarYOn);
if (vBarShortPixelCount > 52)
return -1030;
if ((bandsByteCount - suboffset) < (vBarShortPixelCount * 3))
return -1031;
if (clear->ShortVBarStorageCursor >= 16384)
return -1032;
vBarShortEntry = &(clear->ShortVBarStorage[clear->ShortVBarStorageCursor]);
vBarShortEntry->count = vBarShortPixelCount;
if (vBarShortEntry->count > vBarShortEntry->size)
{
vBarShortEntry->size = vBarShortEntry->count;
if (!vBarShortEntry->pixels)
vBarShortEntry->pixels = (UINT32*) malloc(vBarShortEntry->count * 4);
else
vBarShortEntry->pixels = (UINT32*) realloc(vBarShortEntry->pixels, vBarShortEntry->count * 4);
}
if (!vBarShortEntry->pixels && vBarShortEntry->size)
return -1033;
pDstPixel32 = vBarShortEntry->pixels;
for (y = 0; y < vBarShortPixelCount; y++)
{
*pDstPixel32 = RGB32(pSrcPixel8[2], pSrcPixel8[1], pSrcPixel8[0]);
pSrcPixel8 += 3;
pDstPixel32++;
}
suboffset += (vBarShortPixelCount * 3);
vBarShortEntry->count = vBarShortPixelCount;
clear->ShortVBarStorageCursor = (clear->ShortVBarStorageCursor + 1) % 16384;
vBarUpdate = TRUE;
}
else if ((vBarHeader & 0x8000) == 0x8000) /* VBAR_CACHE_HIT */
{
vBarIndex = (vBarHeader & 0x7FFF);
if (vBarIndex >= 32768)
return -1034;
vBarEntry = &(clear->VBarStorage[vBarIndex]);
}
else
{
return -1035; /* invalid vBarHeader */
}
if (vBarUpdate)
{
if (clear->VBarStorageCursor >= 32768)
return -1036;
vBarEntry = &(clear->VBarStorage[clear->VBarStorageCursor]);
vBarPixelCount = vBarHeight;
vBarEntry->count = vBarPixelCount;
if (vBarEntry->count > vBarEntry->size)
{
vBarEntry->size = vBarEntry->count;
if (!vBarEntry->pixels)
vBarEntry->pixels = (UINT32*) malloc(vBarEntry->count * 4);
else
vBarEntry->pixels = (UINT32*) realloc(vBarEntry->pixels, vBarEntry->count * 4);
}
if (!vBarEntry->pixels && vBarEntry->size)
return -1037;
pDstPixel32 = vBarEntry->pixels;
/* if (y < vBarYOn), use colorBkg */
y = 0;
count = vBarYOn;
if ((y + count) > vBarPixelCount)
count = (vBarPixelCount > y) ? (vBarPixelCount - y) : 0;
while (count--)
{
*pDstPixel32 = colorBkg;
pDstPixel32++;
}
/*
* if ((y >= vBarYOn) && (y < (vBarYOn + vBarShortPixelCount))),
* use vBarShortPixels at index (y - shortVBarYOn)
*/
y = vBarYOn;
count = vBarShortPixelCount;
if ((y + count) > vBarPixelCount)
count = (vBarPixelCount > y) ? (vBarPixelCount - y) : 0;
pSrcPixel32 = &(vBarShortEntry->pixels[y - vBarYOn]);
CopyMemory(pDstPixel32, pSrcPixel32, count * 4);
pDstPixel32 += count;
/* if (y >= (vBarYOn + vBarShortPixelCount)), use colorBkg */
y = vBarYOn + vBarShortPixelCount;
count = (vBarPixelCount > y) ? (vBarPixelCount - y) : 0;
while (count--)
{
*pDstPixel32 = colorBkg;
pDstPixel32++;
}
vBarEntry->count = vBarPixelCount;
clear->VBarStorageCursor = (clear->VBarStorageCursor + 1) % 32768;
}
nXDstRel = nXDst + xStart;
nYDstRel = nYDst + yStart;
pSrcPixel32 = vBarEntry->pixels;
pDstPixel8 = &pDstData[(nYDstRel * nDstStep) + ((nXDstRel + i) * 4)];
count = yEnd - yStart + 1;
if (vBarEntry->count != count)
return -1038;
for (y = 0; y < count; y++)
{
*((UINT32*) pDstPixel8) = *pSrcPixel32;
pDstPixel8 += nDstStep;
pSrcPixel32++;
}
}
}
offset += bandsByteCount;
}
if (subcodecByteCount > 0)
{
UINT16 xStart;
UINT16 yStart;
UINT16 width;
UINT16 height;
BYTE* bitmapData;
UINT32 bitmapDataOffset;
UINT32 bitmapDataByteCount;
BYTE subcodecId;
BYTE* subcodecs;
UINT32 suboffset;
if ((SrcSize - offset) < subcodecByteCount)
return -1039;
suboffset = 0;
subcodecs = &pSrcData[offset];
while (suboffset < subcodecByteCount)
{
if ((subcodecByteCount - suboffset) < 13)
return -1040;
xStart = *((UINT16*) &subcodecs[suboffset]);
yStart = *((UINT16*) &subcodecs[suboffset + 2]);
width = *((UINT16*) &subcodecs[suboffset + 4]);
height = *((UINT16*) &subcodecs[suboffset + 6]);
bitmapDataByteCount = *((UINT32*) &subcodecs[suboffset + 8]);
subcodecId = subcodecs[suboffset + 12];
suboffset += 13;
//WLog_DBG(TAG, "bitmapDataByteCount: %d subcodecByteCount: %d suboffset: %d subCodecId: %d\n",
// bitmapDataByteCount, subcodecByteCount, suboffset, subcodecId);
if ((subcodecByteCount - suboffset) < bitmapDataByteCount)
return -1041;
nXDstRel = nXDst + xStart;
nYDstRel = nYDst + yStart;
if (width > nWidth)
return -1042;
if (height > nHeight)
return -1043;
if (((UINT32) (width * height * 4)) > clear->TempSize)
{
clear->TempSize = (width * height * 4);
clear->TempBuffer = (BYTE*) realloc(clear->TempBuffer, clear->TempSize);
if (!clear->TempBuffer)
return -1044;
}
bitmapData = &subcodecs[suboffset];
if (subcodecId == 0) /* Uncompressed */
{
if (bitmapDataByteCount != (width * height * 3))
return -1045;
pSrcPixel8 = bitmapData;
for (y = 0; y < height; y++)
{
pDstPixel32 = (UINT32*) &pDstData[((nYDstRel + y) * nDstStep) + (nXDstRel * 4)];
for (x = 0; x < width; x++)
{
*pDstPixel32 = RGB32(pSrcPixel8[2], pSrcPixel8[1], pSrcPixel8[0]);
pSrcPixel8 += 3;
pDstPixel32++;
}
}
}
else if (subcodecId == 1) /* NSCodec */
{
if (nsc_process_message(clear->nsc, 32, width, height, bitmapData, bitmapDataByteCount) < 0)
return -1046;
nSrcStep = width * 4;
pSrcPixel8 = clear->nsc->BitmapData;
pDstPixel8 = &pDstData[(nYDstRel * nDstStep) + (nXDstRel * 4)];
for (y = 0; y < height; y++)
{
CopyMemory(pDstPixel8, pSrcPixel8, nSrcStep);
pSrcPixel8 += nSrcStep;
pDstPixel8 += nDstStep;
}
}
else if (subcodecId == 2) /* CLEARCODEC_SUBCODEC_RLEX */
{
UINT32 numBits;
BYTE startIndex;
BYTE stopIndex;
BYTE suiteIndex;
BYTE suiteDepth;
BYTE paletteCount;
UINT32 palette[128];
paletteCount = bitmapData[0];
pSrcPixel8 = &bitmapData[1];
bitmapDataOffset = 1 + (paletteCount * 3);
if (paletteCount > 127)
return -1047;
for (i = 0; i < paletteCount; i++)
{
palette[i] = RGB32(pSrcPixel8[2], pSrcPixel8[1], pSrcPixel8[0]);
pSrcPixel8 += 3;
}
pixelIndex = 0;
pixelCount = width * height;
pDstPixel32 = (UINT32*) clear->TempBuffer;
numBits = CLEAR_LOG2_FLOOR[paletteCount - 1] + 1;
while (bitmapDataOffset < bitmapDataByteCount)
{
if ((bitmapDataByteCount - bitmapDataOffset) < 2)
return -1048;
stopIndex = bitmapData[bitmapDataOffset] & CLEAR_8BIT_MASKS[numBits];
suiteDepth = (bitmapData[bitmapDataOffset] >> numBits) & CLEAR_8BIT_MASKS[(8 - numBits)];
startIndex = stopIndex - suiteDepth;
bitmapDataOffset++;
runLengthFactor = (UINT32) bitmapData[bitmapDataOffset];
bitmapDataOffset++;
if (runLengthFactor >= 0xFF)
{
if ((bitmapDataByteCount - bitmapDataOffset) < 2)
return -1049;
runLengthFactor = (UINT32) *((UINT16*) &bitmapData[bitmapDataOffset]);
bitmapDataOffset += 2;
if (runLengthFactor >= 0xFFFF)
{
if ((bitmapDataByteCount - bitmapDataOffset) < 4)
return -1050;
runLengthFactor = *((UINT32*) &bitmapData[bitmapDataOffset]);
bitmapDataOffset += 4;
}
}
if (startIndex >= paletteCount)
return -1051;
if (stopIndex >= paletteCount)
return -1052;
suiteIndex = startIndex;
color = palette[suiteIndex];
if ((pixelIndex + runLengthFactor) > pixelCount)
return -1053;
for (i = 0; i < runLengthFactor; i++)
{
*pDstPixel32 = color;
pDstPixel32++;
}
pixelIndex += runLengthFactor;
if ((pixelIndex + (suiteDepth + 1)) > pixelCount)
return -1054;
for (i = 0; i <= suiteDepth; i++)
{
*pDstPixel32 = palette[suiteIndex++];
pDstPixel32++;
}
pixelIndex += (suiteDepth + 1);
}
nSrcStep = width * 4;
pSrcPixel8 = clear->TempBuffer;
pDstPixel8 = &pDstData[(nYDstRel * nDstStep) + (nXDstRel * 4)];
if (pixelIndex != pixelCount)
return -1055;
for (y = 0; y < height; y++)
{
CopyMemory(pDstPixel8, pSrcPixel8, nSrcStep);
pSrcPixel8 += nSrcStep;
pDstPixel8 += nDstStep;
pixelCount -= count;
}
}
else
{
return -1056;
}
suboffset += bitmapDataByteCount;
}
offset += subcodecByteCount;
}
if (glyphFlags & CLEARCODEC_FLAG_GLYPH_INDEX)
{
glyphEntry = &(clear->GlyphCache[glyphIndex]);
glyphEntry->count = nWidth * nHeight;
if (glyphEntry->count > glyphEntry->size)
{
glyphEntry->size = glyphEntry->count;
if (!glyphEntry->pixels)
glyphEntry->pixels = (UINT32*) malloc(glyphEntry->size * 4);
else
glyphEntry->pixels = (UINT32*) realloc(glyphEntry->pixels, glyphEntry->size * 4);
}
if (!glyphEntry->pixels)
return -1057;
glyphData = (BYTE*) glyphEntry->pixels;
nSrcStep = nWidth * 4;
pDstPixel8 = glyphData;
pSrcPixel8 = &pDstData[(nYDst * nDstStep) + (nXDst * 4)];
for (y = 0; y < (UINT32) nHeight; y++)
{
CopyMemory(pDstPixel8, pSrcPixel8, nSrcStep);
pDstPixel8 += nSrcStep;
pSrcPixel8 += nDstStep;
}
}
if (offset != SrcSize)
return -1058;
return 1;
}
int clear_compress(CLEAR_CONTEXT* clear, BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData, UINT32* pDstSize)
{
return 1;
}
int clear_context_reset(CLEAR_CONTEXT* clear)
{
clear->seqNumber = 0;
clear->VBarStorageCursor = 0;
clear->ShortVBarStorageCursor = 0;
return 1;
}
CLEAR_CONTEXT* clear_context_new(BOOL Compressor)
{
CLEAR_CONTEXT* clear;
clear = (CLEAR_CONTEXT*) calloc(1, sizeof(CLEAR_CONTEXT));
if (clear)
{
clear->Compressor = Compressor;
clear->nsc = nsc_context_new();
if (!clear->nsc)
return NULL;
nsc_context_set_pixel_format(clear->nsc, RDP_PIXEL_FORMAT_R8G8B8);
clear->TempSize = 512 * 512 * 4;
clear->TempBuffer = (BYTE*) malloc(clear->TempSize);
clear_context_reset(clear);
}
return clear;
}
void clear_context_free(CLEAR_CONTEXT* clear)
{
int i;
if (!clear)
return;
nsc_context_free(clear->nsc);
free(clear->TempBuffer);
for (i = 0; i < 4000; i++)
free(clear->GlyphCache[i].pixels);
for (i = 0; i < 32768; i++)
free(clear->VBarStorage[i].pixels);
for (i = 0; i < 16384; i++)
free(clear->ShortVBarStorage[i].pixels);
free(clear);
}
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