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/**************************************************************************/
/* */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
/* Copyright (c) 2008-2017 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
/* Copyright (c) 2014-2022 Ulrich Sibiller <uli42@gmx.de> */
/* Copyright (c) 2014-2019 Mihai Moldovan <ionic@ionic.de> */
/* Copyright (c) 2011-2022 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
/* */
/* NXCOMPEXT, 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 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. */
/* */
/**************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "Compext.h"
#include "Bitmap.h"
#define PANIC
#define WARNING
#undef TEST
#undef DEBUG
char *BitmapCompressData(XImage *image, unsigned int *size)
{
if (image -> bits_per_pixel != 32)
{
#ifdef TEST
fprintf(stderr, "******BitmapCompressData: Nothing to do with image of [%d] bpp and size [%d].\n",
image -> bits_per_pixel, image -> bytes_per_line * image -> height);
#endif
*size = image -> bytes_per_line * image -> height;
return image -> data;
}
else
{
/*
* Remove the 4th byte from the bitmap.
*/
char *data;
char *next_src;
char *next_dst;
#ifdef TEST
if (image -> bytes_per_line != 4 * image -> width)
{
fprintf(stderr, "******BitmapCompressData: PANIC! Image as [%d] bytes per line with expected [%d].\n",
image -> bytes_per_line, 4 * image -> width);
return NULL;
}
#endif
*size = image -> width * image -> height * 3;
data = malloc(*size);
if (data == NULL)
{
#ifdef PANIC
fprintf(stderr, "******BitmapCompressData: PANIC! Failed to allocate [%d] bytes for the destination.\n",
*size);
#endif
*size = image -> bytes_per_line * image -> height;
return image -> data;
}
next_src = image -> data;
next_dst = data;
if (image -> byte_order == LSBFirst)
{
while (next_src < image -> data +
image -> bytes_per_line * image -> height)
{
*next_dst++ = *next_src++;
*next_dst++ = *next_src++;
*next_dst++ = *next_src++;
next_src++;
}
}
else
{
while (next_src < image -> data +
image -> bytes_per_line * image -> height)
{
next_src++;
*next_dst++ = *next_src++;
*next_dst++ = *next_src++;
*next_dst++ = *next_src++;
}
}
return data;
}
}
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