121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
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/* Copyright (c) 2008-2017 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
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/* Copyright (c) 2014-2022 Ulrich Sibiller <uli42@gmx.de> */
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/* Copyright (c) 2014-2019 Mihai Moldovan <ionic@ionic.de> */
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/* Copyright (c) 2011-2022 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
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/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
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/* */
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/* NXCOMPEXT, NX protocol compression and NX extensions to this software */
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/* are copyright of the aforementioned persons and companies. */
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/* */
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/* Redistribution and use of the present software is allowed according */
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/* to terms specified in the file LICENSE which comes in the source */
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/* distribution. */
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/* */
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/* All rights reserved. */
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/* */
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/* NOTE: This software has received contributions from various other */
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/* contributors, only the core maintainers and supporters are listed as */
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/* copyright holders. Please contact us, if you feel you should be listed */
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/* as copyright holder, as well. */
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/* */
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/**************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "Compext.h"
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#include "Bitmap.h"
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#define PANIC
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#define WARNING
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#undef TEST
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#undef DEBUG
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char *BitmapCompressData(XImage *image, unsigned int *size)
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{
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if (image -> bits_per_pixel != 32)
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{
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#ifdef TEST
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fprintf(stderr, "******BitmapCompressData: Nothing to do with image of [%d] bpp and size [%d].\n",
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image -> bits_per_pixel, image -> bytes_per_line * image -> height);
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#endif
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*size = image -> bytes_per_line * image -> height;
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return image -> data;
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}
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else
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{
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/*
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* Remove the 4th byte from the bitmap.
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*/
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char *data;
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char *next_src;
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char *next_dst;
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#ifdef TEST
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if (image -> bytes_per_line != 4 * image -> width)
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{
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fprintf(stderr, "******BitmapCompressData: PANIC! Image as [%d] bytes per line with expected [%d].\n",
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image -> bytes_per_line, 4 * image -> width);
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return NULL;
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}
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#endif
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*size = image -> width * image -> height * 3;
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data = malloc(*size);
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if (data == NULL)
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{
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#ifdef PANIC
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fprintf(stderr, "******BitmapCompressData: PANIC! Failed to allocate [%d] bytes for the destination.\n",
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*size);
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#endif
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*size = image -> bytes_per_line * image -> height;
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return image -> data;
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}
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next_src = image -> data;
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next_dst = data;
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if (image -> byte_order == LSBFirst)
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{
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while (next_src < image -> data +
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image -> bytes_per_line * image -> height)
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{
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*next_dst++ = *next_src++;
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*next_dst++ = *next_src++;
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*next_dst++ = *next_src++;
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next_src++;
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}
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}
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else
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{
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while (next_src < image -> data +
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image -> bytes_per_line * image -> height)
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{
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next_src++;
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*next_dst++ = *next_src++;
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*next_dst++ = *next_src++;
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*next_dst++ = *next_src++;
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}
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}
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return data;
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}
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}
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