From 42e72ef5f513977227328efba9482225b643697a Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Sun, 13 Nov 2011 09:52:37 +0100 Subject: Imported nxcompext-3.1.0-2.tar.gz Summary: Imported nxcompext-3.1.0-2.tar.gz Keywords: Imported nxcompext-3.1.0-2.tar.gz into Git repository --- nxcompext/Clean.c | 341 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 341 insertions(+) create mode 100644 nxcompext/Clean.c (limited to 'nxcompext/Clean.c') diff --git a/nxcompext/Clean.c b/nxcompext/Clean.c new file mode 100644 index 000000000..cc022004f --- /dev/null +++ b/nxcompext/Clean.c @@ -0,0 +1,341 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */ +/* */ +/* NXCOMPEXT, NX protocol compression and NX extensions to this software */ +/* are copyright of NoMachine. Redistribution and use of the present */ +/* software is allowed according to terms specified in the file LICENSE */ +/* which comes in the source distribution. */ +/* */ +/* Check http://www.nomachine.com/licensing.html for applicability. */ +/* */ +/* NX and NoMachine are trademarks of NoMachine S.r.l. */ +/* */ +/* All rigths reserved. */ +/* */ +/**************************************************************************/ + +#include +#include + +#include "os.h" + +#include "NXlib.h" + +#include "Clean.h" + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG + +int CleanXYImage(XImage *image) +{ + int i, j, k, plane; + + int bitsToClean = (image -> bytes_per_line << 3) - image -> width - image -> xoffset; + + unsigned int bytesToClean = bitsToClean >> 3; + + bitsToClean &= 7; + + for (k = 0; k < image -> depth; k++) + { + plane = k * (image -> bytes_per_line * image -> height); + + for (i = 1; i <= image -> height; i++) + { + if (image -> byte_order == image -> bitmap_bit_order) + { + for (j = 1; j <= bytesToClean; j++) + { + image -> data[plane + i * (image -> bytes_per_line) - j] = 0x00; + } + } + else + { + for (j = bytesToClean; j >= 1; j--) + { + image -> data[plane + i * (image -> bytes_per_line) - j] = 0x00; + } + } + + if (image -> bitmap_bit_order == MSBFirst) + { + image -> data[plane + i * (image -> bytes_per_line) - j] &= 0xff << bitsToClean; + } + else + { + image -> data[plane + i * (image -> bytes_per_line) - j] &= 0xff >> bitsToClean; + } + } + } + + return 1; +} + +int CleanZImage(XImage *image) +{ + unsigned int bytesToClean; + unsigned int j; + unsigned int imageLength; + + #ifdef TEST + fprintf(stderr, "*****CleanZImage: Going to clean image of [%d] bits per pixel.\n", + image -> bits_per_pixel); + #endif + + switch (image -> bits_per_pixel) + { + case 32: + { + /* + * The caller should pay attention at extracting + * the alpha channel prior to cleaning the image. + * Cleaning an image which is carrying the alpha + * channel will result in the image being treated + * as fully transparent. + */ + + register int i; + + bytesToClean = image -> bytes_per_line * image -> height; + + #ifdef DEBUG + fprintf(stderr, "*****CleanZImage: Cleaning [%d] bytes with bits per pixel [%d] " + "width [%d] bytes per line [%d] height [%d].\n", bytesToClean, + image -> bits_per_pixel, image -> width, image -> + bytes_per_line, image -> height); + #endif + + if (image -> byte_order == LSBFirst) + { + for (i = 3; i < bytesToClean; i += 4) + { + ((unsigned char *) image -> data)[i] = 0x00; + } + } + else + { + for (i = 0; i < bytesToClean; i += 4) + { + ((unsigned char *) image -> data)[i] = 0x00; + } + } + + break; + } + case 24: + case 15: + case 16: + case 8: + { + register int i, j; + + bytesToClean = image -> bytes_per_line - + ((image -> width * image -> bits_per_pixel) >> 3); + + for (i = 1; i <= image -> height; i++) + { + for (j = bytesToClean; j > 0; j--) + { + ((unsigned char *) image -> data)[(i * image -> bytes_per_line) - j] = 0x00; + } + } + + break; + } + default: + { + #ifdef PANIC + fprintf(stderr, "*****CleanZImage: PANIC! Cannot clean image with [%d] bits per pixel.\n", + image -> bits_per_pixel); + #endif + } + } + + /* + * Clean the padding bytes at the real + * end of the buffer. + */ + + imageLength = image -> bytes_per_line * image -> height; + + bytesToClean = imageLength % 4; + + for (j = 0; j < bytesToClean; j++) + { + ((unsigned char *)image -> data)[(imageLength + j)] = 0x00; + } + + return 1; +} + +/* + * Copy a clean version of src_image into dst_image. + * This code is not taking care of the image format. + * The agent doesn't use it and you have to consider + * it unsupported. + */ + +int CopyAndCleanImage(XImage *src_image, XImage *dst_image) +{ + register long data_size; + register int i; + + data_size = (src_image -> bytes_per_line * src_image -> height) >> 2; + + #ifdef WARNING + fprintf(stderr, "******CleanImage: WARNING! Function called with image of [%d] bits per pixel.\n", + src_image -> bits_per_pixel); + #endif + + switch (src_image -> bits_per_pixel) + { + case 32: + { + unsigned int mask; + + if (src_image -> byte_order == MSBFirst) + { + mask = 0xffffff00; + } + else + { + mask = 0x00ffffff; + } + for (i = 0; i < data_size; i++) + { + ((unsigned int *)dst_image -> data)[i] = ((unsigned int *)src_image -> data)[i] & mask; + } + + break; + } + + case 24: + { + unsigned int bytes_to_clean; + + for (i = 0; i < data_size; i++) + { + ((unsigned int *)dst_image -> data)[i] = ((unsigned int *)src_image -> data)[i]; + } + + bytes_to_clean = dst_image -> bytes_per_line - ((dst_image -> width * + dst_image -> bits_per_pixel) >> 3); + + if (bytes_to_clean) + { + register unsigned int mask = 0xffffffff; + register int line_size; + register int i; + + line_size = dst_image -> bytes_per_line >> 2; + + if (dst_image -> byte_order == MSBFirst) + { + mask = mask << (bytes_to_clean << 3); + } + else + { + mask = mask >> (bytes_to_clean << 3); + } + + for (i = 0; i < dst_image -> height;) + { + ((unsigned char *)dst_image -> data)[(++i * line_size) -1] &= mask; + } + } + + break; + } + + case 15: + case 16: + { + for (i = 0; i < data_size; i++) + { + ((unsigned int *) dst_image -> data)[i] = ((unsigned int *) src_image -> data)[i]; + } + + if (src_image -> width & 0x00000001) + { + int card32_per_line = dst_image -> bytes_per_line >> 2; + + for (i = 0; i < dst_image -> height;) + { + ((unsigned int *) dst_image -> data)[(++i * card32_per_line) -1] &= 0x0000ffff; + } + } + + break; + } + + case 8: + { + unsigned int mask = 0x00000000; + + switch (dst_image -> width % 4) + { + case 3: + { + mask = 0x00ffffff; + + break; + } + case 2: + { + mask = 0x0000ffff; + + break; + } + case 1: + { + mask = 0x000000ff; + + break; + } + default: + { + /* + * Nothing to clean. + */ + + break; + } + } + + for (i = 0; i < data_size; i++) + { + ((unsigned int *) dst_image -> data)[i] = ((unsigned int *) src_image -> data)[i]; + } + + if (mask) + { + int card32_per_line; + int i; + + card32_per_line = dst_image -> bytes_per_line >> 2; + + for (i = 0; i < dst_image -> height; i++) + { + ((unsigned int *) dst_image -> data)[(++i * card32_per_line) -1] &= mask; + } + } + + break; + } + + default: + { + #ifdef PANIC + fprintf(stderr, "******CleanImage: PANIC! Cannot clean image of [%d] bits per pixel.\n", + src_image -> bits_per_pixel); + #endif + + return 0; + } + } + + return 1; +} -- cgit v1.2.3