1130 lines
23 KiB
C
1130 lines
23 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* RDP6 Planar Codec
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*
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* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <winpr/crt.h>
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#include <winpr/print.h>
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#include <freerdp/primitives.h>
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#include <freerdp/utils/debug.h>
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#include <freerdp/codec/bitmap.h>
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#include "planar.h"
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static int planar_decompress_plane_rle(BYTE* pSrcData, UINT32 SrcSize, BYTE* pDstData,
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int nDstStep, int nXDst, int nYDst, int nWidth, int nHeight, int nChannel, BOOL vFlip)
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{
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int x, y;
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BYTE* srcp;
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BYTE* dstp;
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UINT32 pixel;
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int cRawBytes;
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int nRunLength;
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int deltaValue;
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int beg, end, inc;
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BYTE controlByte;
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BYTE* currentScanline;
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BYTE* previousScanline;
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srcp = pSrcData;
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dstp = pDstData;
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previousScanline = NULL;
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if (vFlip)
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{
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beg = nHeight - 1;
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end = -1;
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inc = -1;
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}
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else
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{
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beg = 0;
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end = nHeight;
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inc = 1;
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}
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for (y = beg; y != end; y += inc)
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{
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dstp = &pDstData[((nYDst + y) * nDstStep) + (nXDst * 4) + nChannel];
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pixel = 0;
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currentScanline = dstp;
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for (x = 0; x < nWidth; )
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{
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controlByte = *srcp;
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srcp++;
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if ((srcp - pSrcData) > SrcSize)
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{
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DEBUG_WARN( "planar_decompress_plane_rle: error reading input buffer\n");
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return -1;
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}
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nRunLength = PLANAR_CONTROL_BYTE_RUN_LENGTH(controlByte);
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cRawBytes = PLANAR_CONTROL_BYTE_RAW_BYTES(controlByte);
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if (nRunLength == 1)
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{
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nRunLength = cRawBytes + 16;
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cRawBytes = 0;
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}
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else if (nRunLength == 2)
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{
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nRunLength = cRawBytes + 32;
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cRawBytes = 0;
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}
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if (((dstp + (cRawBytes + nRunLength)) - currentScanline) > nWidth * 4)
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{
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DEBUG_WARN( "planar_decompress_plane_rle: too many pixels in scanline\n");
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return -1;
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}
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if (!previousScanline)
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{
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/* first scanline, absolute values */
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while (cRawBytes > 0)
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{
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pixel = *srcp;
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srcp++;
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*dstp = pixel;
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dstp += 4;
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x++;
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cRawBytes--;
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}
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while (nRunLength > 0)
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{
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*dstp = pixel;
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dstp += 4;
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x++;
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nRunLength--;
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}
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}
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else
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{
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/* delta values relative to previous scanline */
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while (cRawBytes > 0)
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{
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deltaValue = *srcp;
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srcp++;
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if (deltaValue & 1)
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{
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deltaValue = deltaValue >> 1;
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deltaValue = deltaValue + 1;
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pixel = -deltaValue;
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}
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else
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{
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deltaValue = deltaValue >> 1;
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pixel = deltaValue;
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}
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deltaValue = previousScanline[x * 4] + pixel;
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*dstp = deltaValue;
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dstp += 4;
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x++;
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cRawBytes--;
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}
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while (nRunLength > 0)
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{
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deltaValue = previousScanline[x * 4] + pixel;
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*dstp = deltaValue;
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dstp += 4;
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x++;
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nRunLength--;
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}
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}
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}
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previousScanline = currentScanline;
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}
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return (int) (srcp - pSrcData);
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}
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static int planar_decompress_plane_raw(BYTE* pSrcData, UINT32 SrcSize, BYTE* pDstData,
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int nDstStep, int nXDst, int nYDst, int nWidth, int nHeight, int nChannel, BOOL vFlip)
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{
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int x, y;
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int beg, end, inc;
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BYTE* dstp = NULL;
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BYTE* srcp = pSrcData;
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if (vFlip)
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{
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beg = nHeight - 1;
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end = -1;
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inc = -1;
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}
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else
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{
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beg = 0;
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end = nHeight;
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inc = 1;
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}
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for (y = beg; y != end; y += inc)
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{
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dstp = &pDstData[((nYDst + y) * nDstStep) + (nXDst * 4) + nChannel];
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for (x = 0; x < nWidth; x++)
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{
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*dstp = *srcp;
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dstp += 4;
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srcp++;
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}
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}
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return (int) (srcp - pSrcData);
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}
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static int planar_decompress_rgb_planes_raw(const BYTE* pSrcData[4], int nSrcStep, BYTE* pDstData,
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int nDstStep, int nXDst, int nYDst, int nWidth, int nHeight, BOOL alpha, BOOL vFlip)
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{
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int x, y;
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int beg, end, inc;
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BYTE* pRGB = pDstData;
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const BYTE* pR = pSrcData[0];
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const BYTE* pG = pSrcData[1];
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const BYTE* pB = pSrcData[2];
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const BYTE* pA = pSrcData[3];
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if (vFlip)
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{
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beg = nHeight - 1;
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end = -1;
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inc = -1;
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}
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else
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{
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beg = 0;
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end = nHeight;
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inc = 1;
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}
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if (alpha)
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{
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for (y = beg; y != end; y += inc)
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{
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pRGB = &pDstData[((nYDst + y) * nDstStep) + (nXDst * 4)];
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for (x = 0; x < nWidth; x++)
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{
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*pRGB++ = *pB++;
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*pRGB++ = *pG++;
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*pRGB++ = *pR++;
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*pRGB++ = *pA++;
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}
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}
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}
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else
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{
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for (y = beg; y != end; y += inc)
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{
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pRGB = &pDstData[((nYDst + y) * nDstStep) + (nXDst * 4)];
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for (x = 0; x < nWidth; x++)
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{
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*pRGB++ = *pB++;
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*pRGB++ = *pG++;
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*pRGB++ = *pR++;
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*pRGB++ = 0xFF;
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}
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}
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}
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return 1;
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}
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int planar_decompress(BITMAP_PLANAR_CONTEXT* planar, BYTE* pSrcData, UINT32 SrcSize,
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BYTE** ppDstData, DWORD DstFormat, int nDstStep, int nXDst, int nYDst, int nWidth, int nHeight)
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{
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BOOL cs;
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BOOL rle;
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UINT32 cll;
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BOOL alpha;
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int status;
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BYTE* srcp;
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BOOL vFlip;
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BYTE FormatHeader;
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BYTE* pDstData = NULL;
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UINT32 UncompressedSize;
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const primitives_t* prims = primitives_get();
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if ((nWidth * nHeight) <= 0)
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return -1;
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vFlip = FREERDP_PIXEL_FORMAT_FLIP(DstFormat) ? TRUE : FALSE;
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srcp = pSrcData;
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UncompressedSize = nWidth * nHeight * 4;
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pDstData = *ppDstData;
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if (!pDstData)
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{
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pDstData = (BYTE*) malloc(UncompressedSize);
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if (!pDstData)
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return -1;
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*ppDstData = pDstData;
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}
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FormatHeader = *srcp;
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srcp++;
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cll = (FormatHeader & PLANAR_FORMAT_HEADER_CLL_MASK);
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cs = (FormatHeader & PLANAR_FORMAT_HEADER_CS) ? TRUE : FALSE;
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rle = (FormatHeader & PLANAR_FORMAT_HEADER_RLE) ? TRUE : FALSE;
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alpha = (FormatHeader & PLANAR_FORMAT_HEADER_NA) ? FALSE : TRUE;
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//printf("CLL: %d CS: %d RLE: %d ALPHA: %d\n", cll, cs, rle, alpha);
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if (!cll) /* RGB */
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{
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if (!rle) /* RAW */
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{
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int planeSize;
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const BYTE* planes[4];
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planeSize = nWidth * nHeight;
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if (alpha)
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{
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if ((SrcSize - (srcp - pSrcData)) < (planeSize * 4))
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return -1;
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planes[3] = &srcp[planeSize * 0]; /* AlphaPlane */
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planes[0] = &srcp[planeSize * 1]; /* RedPlane */
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planes[1] = &srcp[planeSize * 2]; /* GreenPlane */
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planes[2] = &srcp[planeSize * 3]; /* BluePlane */
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planar_decompress_rgb_planes_raw(planes, nWidth, pDstData, nDstStep,
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nXDst, nYDst, nWidth, nHeight, alpha, vFlip);
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srcp += (planeSize * 4);
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srcp++; /* pad */
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}
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else /* NoAlpha */
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{
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if ((SrcSize - (srcp - pSrcData)) < (planeSize * 3))
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return -1;
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planes[0] = &srcp[planeSize * 0]; /* RedPlane */
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planes[1] = &srcp[planeSize * 1]; /* GreenPlane */
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planes[2] = &srcp[planeSize * 2]; /* BluePlane */
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planar_decompress_rgb_planes_raw(planes, nWidth, pDstData, nDstStep,
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nXDst, nYDst, nWidth, nHeight, alpha, vFlip);
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srcp += (planeSize * 3);
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srcp++; /* pad */
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}
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}
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else /* RLE */
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{
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if (alpha)
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{
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/* AlphaPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 3, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* RedPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 2, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* GreenPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 1, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* BluePlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 0, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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}
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else /* NoAlpha */
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{
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/* RedPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 2, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* GreenPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 1, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* BluePlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 0, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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}
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}
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status = (SrcSize == (srcp - pSrcData)) ? 1 : -1;
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return status;
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}
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/* AlphaPlane */
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if (alpha)
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{
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if (rle)
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{
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 3, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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}
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else
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{
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status = planar_decompress_plane_raw(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 3, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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}
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}
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if (rle)
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{
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/* LumaPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 2, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* OrangeChromaPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 1, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* GreenChromaPlane */
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status = planar_decompress_plane_rle(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 0, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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}
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else
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{
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/* LumaPlane */
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status = planar_decompress_plane_raw(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 2, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* OrangeChromaPlane */
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status = planar_decompress_plane_raw(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 1, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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/* GreenChromaPlane */
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status = planar_decompress_plane_raw(srcp, SrcSize - (srcp - pSrcData),
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pDstData, nDstStep, nXDst, nYDst, nWidth, nHeight, 0, vFlip);
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if (status < 0)
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return -1;
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srcp += status;
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srcp++;
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}
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if (cll)
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{
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/* The data is in YCoCg colorspace rather than RGB. */
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if (cs)
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{
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DEBUG_WARN("Chroma-Subsampling is not implemented");
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}
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else
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{
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prims->YCoCgToRGB_8u_AC4R(pDstData, nDstStep,
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pDstData, nDstStep, nWidth, nHeight, cll, alpha, FALSE);
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}
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}
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status = (SrcSize == (srcp - pSrcData)) ? 1 : -1;
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return status;
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}
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int freerdp_split_color_planes(BYTE* data, UINT32 format, int width, int height, int scanline, BYTE* planes[4])
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{
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int bpp;
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int i, j, k;
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k = 0;
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bpp = FREERDP_PIXEL_FORMAT_BPP(format);
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if (bpp == 32)
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{
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UINT32* pixel;
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for (i = height - 1; i >= 0; i--)
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{
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pixel = (UINT32*) &data[scanline * i];
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for (j = 0; j < width; j++)
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{
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GetARGB32(planes[0][k], planes[1][k], planes[2][k], planes[3][k], *pixel);
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pixel++;
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k++;
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}
|
|
}
|
|
}
|
|
else if (bpp == 24)
|
|
{
|
|
UINT32* pixel;
|
|
|
|
for (i = height - 1; i >= 0; i--)
|
|
{
|
|
pixel = (UINT32*) &data[scanline * i];
|
|
|
|
for (j = 0; j < width; j++)
|
|
{
|
|
GetRGB32(planes[1][k], planes[2][k], planes[3][k], *pixel);
|
|
planes[0][k] = 0xFF; /* A */
|
|
pixel++;
|
|
k++;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int freerdp_bitmap_planar_write_rle_bytes(BYTE* pInBuffer, int cRawBytes, int nRunLength, BYTE* pOutBuffer, int outBufferSize)
|
|
{
|
|
BYTE* pInput;
|
|
BYTE* pOutput;
|
|
BYTE controlByte;
|
|
int 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);
|
|
}
|
|
|
|
int freerdp_bitmap_planar_encode_rle_bytes(BYTE* pInBuffer, int inBufferSize, BYTE* pOutBuffer, int outBufferSize)
|
|
{
|
|
BYTE symbol;
|
|
BYTE* pInput;
|
|
BYTE* pOutput;
|
|
BYTE* pBytes;
|
|
int cRawBytes;
|
|
int nRunLength;
|
|
int bSymbolMatch;
|
|
int nBytesWritten;
|
|
int 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;
|
|
}
|
|
|
|
BYTE* freerdp_bitmap_planar_compress_plane_rle(BYTE* inPlane, int width, int height, BYTE* outPlane, int* dstSize)
|
|
{
|
|
int index;
|
|
BYTE* pInput;
|
|
BYTE* pOutput;
|
|
int outBufferSize;
|
|
int nBytesWritten;
|
|
int nTotalBytesWritten;
|
|
|
|
if (!outPlane)
|
|
{
|
|
outBufferSize = width * height;
|
|
outPlane = malloc(outBufferSize);
|
|
}
|
|
else
|
|
{
|
|
outBufferSize = *dstSize;
|
|
}
|
|
|
|
index = 0;
|
|
pInput = inPlane;
|
|
pOutput = outPlane;
|
|
nTotalBytesWritten = 0;
|
|
|
|
while (outBufferSize)
|
|
{
|
|
nBytesWritten = freerdp_bitmap_planar_encode_rle_bytes(pInput, width, pOutput, outBufferSize);
|
|
|
|
if ((!nBytesWritten) || (nBytesWritten > outBufferSize))
|
|
return NULL;
|
|
|
|
outBufferSize -= nBytesWritten;
|
|
nTotalBytesWritten += nBytesWritten;
|
|
pOutput += nBytesWritten;
|
|
pInput += width;
|
|
index++;
|
|
|
|
if (index >= height)
|
|
break;
|
|
}
|
|
|
|
*dstSize = nTotalBytesWritten;
|
|
|
|
return outPlane;
|
|
}
|
|
|
|
int freerdp_bitmap_planar_compress_planes_rle(BYTE* inPlanes[4], int width, int height, BYTE* outPlanes, int* dstSizes, BOOL skipAlpha)
|
|
{
|
|
int 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 0;
|
|
|
|
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 0;
|
|
|
|
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 0;
|
|
|
|
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 0;
|
|
|
|
outPlanes += dstSizes[3];
|
|
outPlanesSize -= dstSizes[3];
|
|
|
|
return 1;
|
|
}
|
|
|
|
BYTE* freerdp_bitmap_planar_delta_encode_plane(BYTE* inPlane, int width, int height, BYTE* outPlane)
|
|
{
|
|
char s2c;
|
|
int delta;
|
|
int y, x;
|
|
BYTE *outPtr, *srcPtr, *prevLinePtr;
|
|
|
|
if (!outPlane)
|
|
outPlane = (BYTE*) malloc(width * height);
|
|
|
|
// 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;
|
|
}
|
|
|
|
int freerdp_bitmap_planar_delta_encode_planes(BYTE* inPlanes[4], int width, int height, BYTE* outPlanes[4])
|
|
{
|
|
freerdp_bitmap_planar_delta_encode_plane(inPlanes[0], width, height, outPlanes[0]);
|
|
freerdp_bitmap_planar_delta_encode_plane(inPlanes[1], width, height, outPlanes[1]);
|
|
freerdp_bitmap_planar_delta_encode_plane(inPlanes[2], width, height, outPlanes[2]);
|
|
freerdp_bitmap_planar_delta_encode_plane(inPlanes[3], width, height, outPlanes[3]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
BYTE* freerdp_bitmap_compress_planar(BITMAP_PLANAR_CONTEXT* context, BYTE* data, UINT32 format,
|
|
int width, int height, int scanline, BYTE* dstData, int* dstSize)
|
|
{
|
|
int size;
|
|
BYTE* dstp;
|
|
int planeSize;
|
|
int dstSizes[4];
|
|
BYTE FormatHeader = 0;
|
|
|
|
if (context->AllowSkipAlpha)
|
|
FormatHeader |= PLANAR_FORMAT_HEADER_NA;
|
|
|
|
planeSize = width * height;
|
|
|
|
freerdp_split_color_planes(data, format, width, height, scanline, context->planes);
|
|
|
|
if (context->AllowRunLengthEncoding)
|
|
{
|
|
freerdp_bitmap_planar_delta_encode_planes(context->planes, width, height, context->deltaPlanes);
|
|
|
|
if (freerdp_bitmap_planar_compress_planes_rle(context->deltaPlanes, width, height,
|
|
context->rlePlanesBuffer, (int*) &dstSizes, context->AllowSkipAlpha) > 0)
|
|
{
|
|
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];
|
|
offset += dstSizes[3];
|
|
|
|
//DEBUG_MSG("R: [%d/%d] G: [%d/%d] B: [%d/%d]\n",
|
|
// dstSizes[1], planeSize, dstSizes[2], planeSize, dstSizes[3], planeSize);
|
|
}
|
|
}
|
|
|
|
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);
|
|
*dstSize = 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);
|
|
*dstSize = size;
|
|
|
|
return dstData;
|
|
}
|
|
|
|
BITMAP_PLANAR_CONTEXT* freerdp_bitmap_planar_context_new(DWORD flags, int maxWidth, int maxHeight)
|
|
{
|
|
BITMAP_PLANAR_CONTEXT* context;
|
|
|
|
context = (BITMAP_PLANAR_CONTEXT*) malloc(sizeof(BITMAP_PLANAR_CONTEXT));
|
|
|
|
if (!context)
|
|
return NULL;
|
|
|
|
ZeroMemory(context, sizeof(BITMAP_PLANAR_CONTEXT));
|
|
|
|
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;
|
|
|
|
context->maxWidth = maxWidth;
|
|
context->maxHeight = maxHeight;
|
|
context->maxPlaneSize = context->maxWidth * context->maxHeight;
|
|
|
|
context->planesBuffer = malloc(context->maxPlaneSize * 4);
|
|
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->deltaPlanesBuffer = malloc(context->maxPlaneSize * 4);
|
|
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];
|
|
|
|
context->rlePlanesBuffer = malloc(context->maxPlaneSize * 4);
|
|
|
|
return context;
|
|
}
|
|
|
|
void freerdp_bitmap_planar_context_free(BITMAP_PLANAR_CONTEXT* context)
|
|
{
|
|
if (!context)
|
|
return;
|
|
|
|
free(context->planesBuffer);
|
|
free(context->deltaPlanesBuffer);
|
|
free(context->rlePlanesBuffer);
|
|
|
|
free(context);
|
|
}
|