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Diffstat (limited to 'nxcomp/Pgn.cpp')
| -rw-r--r-- | nxcomp/Pgn.cpp | 805 |
1 files changed, 0 insertions, 805 deletions
diff --git a/nxcomp/Pgn.cpp b/nxcomp/Pgn.cpp deleted file mode 100644 index 17e1702d4..000000000 --- a/nxcomp/Pgn.cpp +++ /dev/null @@ -1,805 +0,0 @@ -/**************************************************************************/ -/* */ -/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */ -/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */ -/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */ -/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */ -/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/ -/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */ -/* */ -/* NXCOMP, NX protocol compression and NX extensions to this software */ -/* are copyright of the aforementioned persons and companies. */ -/* */ -/* Redistribution and use of the present software is allowed according */ -/* to terms specified in the file LICENSE.nxcomp which comes in the */ -/* source distribution. */ -/* */ -/* All rights reserved. */ -/* */ -/* NOTE: This software has received contributions from various other */ -/* contributors, only the core maintainers and supporters are listed as */ -/* copyright holders. Please contact us, if you feel you should be listed */ -/* as copyright holder, as well. */ -/* */ -/**************************************************************************/ - -// -// This file obviously supports PNG -// decompression. It was renamed to -// avoid name clashes on Windows. -// - -#include <X11/Xmd.h> - -#ifdef ANDROID -#include <strings.h> -#endif -#include <unistd.h> -#include <stdio.h> -#include <png.h> - -#include "Unpack.h" -#include "Pgn.h" - -#define PANIC -#define WARNING -#undef TEST -#undef DEBUG - -#define RGB24_TO_PIXEL(bpp,r,g,b) \ - ((((CARD##bpp)(r) & 0xFF) * srcRedMax2 + 127) / 255 \ - << srcRedShift2 | \ - (((CARD##bpp)(g) & 0xFF) * srcGreenMax2 + 127) / 255 \ - << srcGreenShift2 | \ - (((CARD##bpp)(b) & 0xFF) * srcBlueMax2 + 127) / 255 \ - << srcBlueShift2) - -#define RGB24_TO_PIXEL32(r,g,b) \ - (((CARD32)(r) & 0xFF) << srcRedShift2 | \ - ((CARD32)(g) & 0xFF) << srcGreenShift2 | \ - ((CARD32)(b) & 0xFF) << srcBlueShift2) - -// -// Functions from Unpack.cpp -// - -extern int Unpack32To32(const T_colormask *colormask, const unsigned int *data, - unsigned int *out, unsigned int *end); - -extern int Unpack24To24(const T_colormask *colormask, const unsigned char *data, - unsigned char *out, unsigned char *end); - -extern int Unpack16To16(const T_colormask *colormask, const unsigned char *data, - unsigned char *out, unsigned char *end); - -// -// Local functions used for the png decompression. -// - -static int DecompressPng16(unsigned char *compressedData, int compressedLen, - unsigned int w, unsigned int h, unsigned char *dstBuf, - int byteOrder); - -static int DecompressPng24(unsigned char *compressedData, int compressedLen, - unsigned int w, unsigned int h, unsigned char *dstBuf, - int byteOrder); - -static int DecompressPng32(unsigned char *compressedData, int compressedLen, - unsigned int w, unsigned int h, unsigned char *dstBuf, - int byteOrder); - -static void PngReadData(png_structp png_ptr, png_bytep data, png_size_t length); - -// -// Colormap stuff. -// - -CARD16 srcRedMax2, srcGreenMax2, srcBlueMax2; -CARD8 srcRedShift2, srcGreenShift2, srcBlueShift2; - -// -// Attributes used for the png decompression. -// - -static char *tmpBuf; -static int tmpBufSize = 0; -static int streamPos; - -int UnpackPng(T_geometry *geometry, unsigned char method, unsigned char *srcData, - int srcSize, int dstBpp, int dstWidth, int dstHeight, - unsigned char *dstData, int dstSize) -{ - int byteOrder = geometry -> image_byte_order; - - // - // Check if data is coming from a failed unsplit. - // - - if (srcSize < 2 || (srcData[0] == SPLIT_PATTERN && - srcData[1] == SPLIT_PATTERN)) - { - #ifdef WARNING - *logofs << "UnpackPng: WARNING! Skipping unpack of dummy data.\n" - << logofs_flush; - #endif - - return -1; - } - - #ifdef DEBUG - *logofs << "UnpackPng: Decompressing image with " - << "srcSize " << srcSize << " and bpp " - << dstBpp << ".\n" << logofs_flush; - #endif - - srcRedShift2 = ffs(geometry -> red_mask) - 1; - srcGreenShift2 = ffs(geometry -> green_mask) - 1; - srcBlueShift2 = ffs(geometry -> blue_mask) - 1; - srcRedMax2 = geometry -> red_mask >> srcRedShift2; - srcGreenMax2 = geometry -> green_mask >> srcGreenShift2; - srcBlueMax2 = geometry -> blue_mask >> srcBlueShift2; - - // - // Make enough space in the temporary - // buffer to have one complete row of - // the image with 3 bytes per pixel. - // - - tmpBufSize = dstWidth * 3; - tmpBuf = new char [tmpBufSize]; - - if (tmpBuf == NULL) - { - #ifdef PANIC - *logofs << "UnpackPng: PANIC! Cannot allocate " - << dstWidth * 3 << " bytes for PNG " - << "decompressed data.\n" << logofs_flush; - #endif - - delete [] tmpBuf; - - return -1; - } - - int result = 1; - - switch (dstBpp) - { - case 8: - { - // - // Simply move the data from srcData to dstData - // taking into consideration the correct padding. - // - - int row; - - unsigned char * dstBuff = dstData; - unsigned char * srcBuff = srcData; - - for (row = 0; row < dstHeight; row++) - { - memcpy(dstBuff, srcBuff, dstWidth ); - - dstBuff += RoundUp4(dstWidth); - srcBuff += dstWidth; - } - } - case 16: - { - result = DecompressPng16(srcData, srcSize, dstWidth, - dstHeight, dstData, byteOrder); - break; - } - case 24: - { - result = DecompressPng24(srcData, srcSize, dstWidth, - dstHeight, dstData, byteOrder); - break; - } - case 32: - { - result = DecompressPng32(srcData, srcSize, dstWidth, - dstHeight, dstData, byteOrder); - break; - } - default: - { - #ifdef PANIC - *logofs << "UnpackPng: PANIC! Error in PNG compression. " - << " Unsupported Bpp value " << dstBpp - << " for the PNG compression" - << ".\n" << logofs_flush; - #endif - - delete [] tmpBuf; - - result = -1; - } - } - - if (result == -1) - { - delete [] tmpBuf; - - return result; - } - - // - // Apply the correction for the brightness - // - - int maskMethod; - - switch (method) - { - case PACK_PNG_8_COLORS: - { - maskMethod = MASK_8_COLORS; - - break; - } - case PACK_PNG_64_COLORS: - { - maskMethod = MASK_64_COLORS; - - break; - } - case PACK_PNG_256_COLORS: - { - maskMethod = MASK_256_COLORS; - - break; - } - case PACK_PNG_512_COLORS: - { - maskMethod = MASK_512_COLORS; - - break; - } - case PACK_PNG_4K_COLORS: - { - maskMethod = MASK_4K_COLORS; - - break; - } - case PACK_PNG_32K_COLORS: - { - maskMethod = MASK_32K_COLORS; - - break; - } - case PACK_PNG_64K_COLORS: - { - maskMethod = MASK_64K_COLORS; - - break; - } - case PACK_PNG_256K_COLORS: - { - maskMethod = MASK_256K_COLORS; - - break; - } - case PACK_PNG_2M_COLORS: - { - maskMethod = MASK_2M_COLORS; - - break; - } - case PACK_PNG_16M_COLORS: - { - maskMethod = MASK_16M_COLORS; - - break; - } - default: - { - #ifdef PANIC - *logofs << "DecompressPng16: PANIC! " - << " No matching decompression method.\n" - << logofs_flush; - #endif - - delete [] tmpBuf; - - return -1; - } - } - - const T_colormask *colorMask = MethodColorMask(maskMethod); - - unsigned char *dstBuff = dstData; - - switch (dstBpp) - { - case 16: - { - Unpack16To16(colorMask, dstBuff, dstBuff, dstBuff + dstSize); - - break; - } - case 24: - { - break; - } - case 32: - { - Unpack32To32(colorMask, (unsigned int *)dstBuff, (unsigned int *)dstBuff, - (unsigned int *)(dstBuff + dstSize)); - break; - } - default: - { - #ifdef PANIC - *logofs << "DecompressPng16: PANIC! " - << " No matching destination bits per plane.\n" - << logofs_flush; - #endif - - delete [] tmpBuf; - - return -1; - } - } - - delete [] tmpBuf; - - return 1; -} - - -// -// Functions that actually do -// the PNG decompression. -// - -int DecompressPng16(unsigned char *compressedData, int compressedLen, - unsigned int w, unsigned int h, unsigned char *dstBuf, int byteOrder) -{ - unsigned char *data; - unsigned int dx, dy; - - png_structp pngPtr; - png_infop infoPtr; - png_bytep rowPointers; - - - streamPos = 0; - - pngPtr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - - if (!pngPtr) - { - #ifdef PANIC - *logofs << "DecompressPng16: PANIC! " - << " Failed png_create_read_struct operation" - << ".\n" << logofs_flush; - #endif - - return -1; - } - - infoPtr = png_create_info_struct(pngPtr); - - if (!infoPtr) - { - #ifdef PANIC - *logofs << "DecompressPng16: PANIC! " - << "Failed png_create_info_struct operation" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, NULL, NULL); - - return -1; - } - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng16: PANIC! " - << "Error during IO initialization" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - png_set_read_fn(pngPtr, (void *)compressedData, PngReadData); - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng16: PANIC! " - << "Error during read of PNG header" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - png_read_info(pngPtr, infoPtr); - - if (png_get_color_type(pngPtr, infoPtr) == PNG_COLOR_TYPE_PALETTE) - { - png_set_expand(pngPtr); - } - - // - // data points to dstBuf which is - // already padded correctly for the final - // image to put - // - - data = dstBuf; - rowPointers = (png_byte *) tmpBuf; - - // - // We use setjmp() to save our context. - // The PNG library will call longjmp() - // in case of error. - // - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng16: PANIC! " - << "Error during read of PNG rows" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - unsigned long pixel; - - for (dy = 0; dy < h; dy++) - { - png_read_row(pngPtr, rowPointers, NULL); - - for (dx = 0; dx < w; dx++) - { - pixel = RGB24_TO_PIXEL(16, tmpBuf[dx*3], tmpBuf[dx*3+1], tmpBuf[dx*3+2]); - - // - // Follow the server byte order when arranging data. - // - - if (byteOrder == LSBFirst) - { - data[0] = (unsigned char) (pixel & 0xff); - data[1] = (unsigned char) ((pixel >> 8) & 0xff); - } - else - { - data[1] = (unsigned char) (pixel & 0xff); - data[0] = (unsigned char) ((pixel >> 8) & 0xff); - } - - data += 2; - } - - // - // Move pixelPtr at the beginning of the - // next line. - // - - data = data + (RoundUp4(w * 2) - w * 2); - } - - png_destroy_read_struct(&pngPtr, &infoPtr,NULL); - - #ifdef DEBUG - *logofs << "DecompressPng16: Decompression finished." - << dy << " lines handled.\n" - << logofs_flush; - #endif - - return 1; -} - -int DecompressPng24(unsigned char *compressedData, int compressedLen, - unsigned int w, unsigned int h, unsigned char *dstBuf, int byteOrder) -{ - static CARD8 *pixelPtr = NULL; - unsigned int dx, dy; - - png_structp pngPtr; - png_infop infoPtr; - png_bytep rowPointers; - - - streamPos = 0; - - pngPtr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - - if (!pngPtr) - { - #ifdef PANIC - *logofs << "DecompressPng24: PANIC! " - << "Failed png_create_read_struct operation" - << ".\n" << logofs_flush; - #endif - - return -1; - } - - infoPtr = png_create_info_struct(pngPtr); - - if (!infoPtr) - { - #ifdef PANIC - *logofs << "DecompressPng24: PANIC! " - << "Failed png_create_info_struct operation" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, NULL, NULL); - - return -1; - } - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng24: PANIC! " - << "Error during IO initialization" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - png_set_read_fn(pngPtr, (void *)compressedData, PngReadData); - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng24: PANIC! " - << "Error during read of PNG header" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - png_read_info( pngPtr, infoPtr ) ; - - if (png_get_color_type(pngPtr, infoPtr) == PNG_COLOR_TYPE_PALETTE) - { - png_set_expand(pngPtr); - } - - // - // PixelPtr points to dstBuf which is - // already padded correctly for the final - // image to put - // - - pixelPtr = (CARD8 *) dstBuf; - - rowPointers = (png_byte *)tmpBuf; - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng24: PANIC! " - << "Error during read of PNG rows" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - for (dy = 0; dy < h; dy++) - { - png_read_row(pngPtr, rowPointers, NULL); - - for (dx = 0; dx < w; dx++) - { - // - // Follow the server byte order when arranging data. - // - - if (byteOrder == LSBFirst) - { - pixelPtr[0] = tmpBuf[dx * 3]; - pixelPtr[1] = tmpBuf[dx * 3 + 1]; - pixelPtr[2] = tmpBuf[dx * 3 + 2]; - } - else - { - pixelPtr[2] = tmpBuf[dx * 3]; - pixelPtr[1] = tmpBuf[dx * 3 + 1]; - pixelPtr[0] = tmpBuf[dx * 3 + 2]; - } - - pixelPtr += 3; - } - - // - // Go to the next line. - // - - pixelPtr = (CARD8 *) (((char *) pixelPtr) + (RoundUp4(w * 3) - w * 3)); - } - - png_destroy_read_struct(&pngPtr, &infoPtr,NULL); - - #ifdef DEBUG - *logofs << "DecompressPng24: Decompression finished." - << dy << " lines handled.\n" - << logofs_flush; - #endif - - return 1; -} - -int DecompressPng32(unsigned char *compressedData, int compressedLen, - unsigned int w, unsigned int h, unsigned char *dstBuf, int byteOrder) -{ - unsigned char *data; - - unsigned int dx, dy; - - png_structp pngPtr; - png_infop infoPtr; - png_bytep rowPointers; - - streamPos = 0; - - pngPtr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - - if (!pngPtr) - { - #ifdef PANIC - *logofs << "DecompressPng32: PANIC! " - << "Failed png_create_read_struct operation" - << ".\n" << logofs_flush; - #endif - - return -1; - } - - infoPtr = png_create_info_struct(pngPtr); - - if (!infoPtr) - { - #ifdef PANIC - *logofs << "DecompressPng32: PANIC! " - << "Failed png_create_info_struct operation." - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, NULL, NULL); - - return -1; - } - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng32: PANIC! " - << "Error during IO initialization" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - png_set_read_fn(pngPtr, (void *)compressedData, PngReadData); - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng32: PANIC! " - << "Error during read of PNG header" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - png_read_info(pngPtr, infoPtr) ; - - - if (png_get_color_type(pngPtr, infoPtr) == PNG_COLOR_TYPE_PALETTE) - { - png_set_expand(pngPtr); - } - - // - // data points to dstBuf which is - // already padded correctly for the final - // image to put - // - - data = dstBuf; - - rowPointers = (png_byte *) tmpBuf; - - if (setjmp(png_jmpbuf(pngPtr))) - { - #ifdef PANIC - *logofs << "DecompressPng32: PANIC! " - << "Error during read of PNG rows" - << ".\n" << logofs_flush; - #endif - - png_destroy_read_struct(&pngPtr, &infoPtr, NULL); - - return -1; - } - - unsigned long pixel; - - int i; - - for (dy = 0; dy < h; dy++) - { - png_read_row(pngPtr, rowPointers, NULL); - - for (dx = 0; dx < w; dx++) - { - pixel = RGB24_TO_PIXEL(32, tmpBuf[dx * 3], tmpBuf[dx * 3 + 1], - tmpBuf[dx * 3 + 2]); - - // - // Follow the server byte order when arranging data. - // - - if (byteOrder == LSBFirst) - { - for (i = 0; i < 4; i++) - { - data[i] = (unsigned char)(pixel & 0xff); - pixel >>= 8; - } - } - else - { - for (i = 3; i >= 0; i--) - { - data[i] = (unsigned char) (pixel & 0xff); - pixel >>= 8; - } - } - - data += 4; - } - } - - png_destroy_read_struct(&pngPtr, &infoPtr,NULL); - - #ifdef DEBUG - *logofs << "DecompressPng32: Decompression finished." - << dy << " lines handled.\n" - << logofs_flush; - #endif - - return 1; -} - -static void PngReadData(png_structp png_ptr, png_bytep data, png_size_t length) -{ - memcpy((char *) data, (char *) png_get_io_ptr(png_ptr) + streamPos, length); - - streamPos += length; -} |