author | Maciej Jablonski <maciej.jablonski@sosco.com> |
Wed, 12 May 2010 23:13:16 +0100 | |
changeset 72 | d00bf4f57250 |
parent 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
1
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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1 |
/*--------------------------------------------------------------------------- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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3 |
rpng - simple PNG display program readppm.c |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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Initial QEMU (symbian-qemu-0.9.1-12) import
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5 |
--------------------------------------------------------------------------- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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7 |
This is a special-purpose replacement for readpng.c that allows binary |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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8 |
PPM files to be used in place of PNG images. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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9 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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10 |
--------------------------------------------------------------------------- |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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12 |
Copyright (c) 1998-2007 Greg Roelofs. All rights reserved. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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13 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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14 |
This software is provided "as is," without warranty of any kind, |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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15 |
express or implied. In no event shall the author or contributors |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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16 |
be held liable for any damages arising in any way from the use of |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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17 |
this software. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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18 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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19 |
The contents of this file are DUAL-LICENSED. You may modify and/or |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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20 |
redistribute this software according to the terms of one of the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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21 |
following two licenses (at your option): |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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22 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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Initial QEMU (symbian-qemu-0.9.1-12) import
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24 |
LICENSE 1 ("BSD-like with advertising clause"): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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25 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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26 |
Permission is granted to anyone to use this software for any purpose, |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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27 |
including commercial applications, and to alter it and redistribute |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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it freely, subject to the following restrictions: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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29 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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30 |
1. Redistributions of source code must retain the above copyright |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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31 |
notice, disclaimer, and this list of conditions. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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32 |
2. Redistributions in binary form must reproduce the above copyright |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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notice, disclaimer, and this list of conditions in the documenta- |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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34 |
tion and/or other materials provided with the distribution. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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35 |
3. All advertising materials mentioning features or use of this |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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software must display the following acknowledgment: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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37 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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38 |
This product includes software developed by Greg Roelofs |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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39 |
and contributors for the book, "PNG: The Definitive Guide," |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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published by O'Reilly and Associates. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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41 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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42 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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43 |
LICENSE 2 (GNU GPL v2 or later): |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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44 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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45 |
This program is free software; you can redistribute it and/or modify |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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46 |
it under the terms of the GNU General Public License as published by |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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47 |
the Free Software Foundation; either version 2 of the License, or |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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(at your option) any later version. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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49 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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50 |
This program is distributed in the hope that it will be useful, |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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51 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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52 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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53 |
GNU General Public License for more details. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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54 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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55 |
You should have received a copy of the GNU General Public License |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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56 |
along with this program; if not, write to the Free Software Foundation, |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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57 |
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
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---------------------------------------------------------------------------*/ |
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60 |
|
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#include <stdio.h> |
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#include <stdlib.h> |
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63 |
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#include "readpng.h" /* typedefs, common macros, public prototypes */ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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65 |
|
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66 |
|
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ulg width, height; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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68 |
int bit_depth, color_type, channels; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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uch *image_data = NULL; |
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FILE *saved_infile; |
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72 |
|
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void readpng_version_info() |
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{ |
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fprintf(stderr, " Compiled without libpng, zlib or PBMPLUS/NetPBM.\n"); |
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} |
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77 |
|
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78 |
|
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/* return value = 0 for success, 1 for bad sig, 2 for bad IHDR, 4 for no mem */ |
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80 |
|
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int readpng_init(FILE *infile, ulg *pWidth, ulg *pHeight) |
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82 |
{ |
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static uch ppmline[256]; |
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int maxval; |
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85 |
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86 |
|
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saved_infile = infile; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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88 |
|
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fgets(ppmline, 256, infile); |
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if (ppmline[0] != 'P' || ppmline[1] != '6') { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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fprintf(stderr, "ERROR: not a PPM file\n"); |
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92 |
return 1; |
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93 |
} |
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/* possible color types: P5 = grayscale (0), P6 = RGB (2), P8 = RGBA (6) */ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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95 |
if (ppmline[1] == '6') { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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96 |
color_type = 2; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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97 |
channels = 3; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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} else if (ppmline[1] == '8') { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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99 |
color_type = 6; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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100 |
channels = 4; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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101 |
} else /* if (ppmline[1] == '5') */ { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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102 |
color_type = 0; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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103 |
channels = 1; |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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104 |
} |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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105 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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106 |
do { |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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107 |
fgets(ppmline, 256, infile); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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108 |
} while (ppmline[0] == '#'); |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
109 |
sscanf(ppmline, "%lu %lu", &width, &height); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
110 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
111 |
do { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
112 |
fgets(ppmline, 256, infile); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
113 |
} while (ppmline[0] == '#'); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
114 |
sscanf(ppmline, "%d", &maxval); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
115 |
if (maxval != 255) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
116 |
fprintf(stderr, "ERROR: maxval = %d\n", maxval); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
117 |
return 2; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
118 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
119 |
bit_depth = 8; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
120 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
121 |
*pWidth = width; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
122 |
*pHeight = height; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
123 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
124 |
return 0; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
125 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
126 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
127 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
128 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
129 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
130 |
/* returns 0 if succeeds, 1 if fails due to no bKGD chunk, 2 if libpng error; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
131 |
* scales values to 8-bit if necessary */ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
132 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
133 |
int readpng_get_bgcolor(uch *red, uch *green, uch *blue) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
134 |
{ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
135 |
return 1; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
136 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
137 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
138 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
139 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
140 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
141 |
/* display_exponent == LUT_exponent * CRT_exponent */ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
142 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
143 |
uch *readpng_get_image(double display_exponent, int *pChannels, ulg *pRowbytes) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
144 |
{ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
145 |
ulg rowbytes; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
146 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
147 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
148 |
/* expand palette images to RGB, low-bit-depth grayscale images to 8 bits, |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
149 |
* transparency chunks to full alpha channel; strip 16-bit-per-sample |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
150 |
* images to 8 bits per sample; and convert grayscale to RGB[A] */ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
151 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
152 |
/* GRR WARNING: grayscale needs to be expanded and channels reset! */ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
153 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
154 |
*pRowbytes = rowbytes = channels*width; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
155 |
*pChannels = channels; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
156 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
157 |
if ((image_data = (uch *)malloc(rowbytes*height)) == NULL) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
158 |
return NULL; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
159 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
160 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
161 |
Trace((stderr, "readpng_get_image: rowbytes = %ld, height = %ld\n", rowbytes, height)); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
162 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
163 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
164 |
/* now we can go ahead and just read the whole image */ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
165 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
166 |
fread(image_data, 1L, rowbytes*height, saved_infile); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
167 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
168 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
169 |
return image_data; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
170 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
171 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
172 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
173 |
void readpng_cleanup(int free_image_data) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
174 |
{ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
175 |
if (free_image_data && image_data) { |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
176 |
free(image_data); |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
177 |
image_data = NULL; |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
178 |
} |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
179 |
} |