Annotation of embedaddon/php/ext/gd/libgd/gd_wbmp.c, revision 1.1.1.1
1.1 misho 1: /*
2: WBMP: Wireless Bitmap Type 0: B/W, Uncompressed Bitmap
3: Specification of the WBMP format can be found in the file:
4: SPEC-WAESpec-19990524.pdf
5: You can download the WAP specification on: http://www.wapforum.com/
6:
7: gd_wbmp.c
8:
9: Copyright (C) Johan Van den Brande (johan@vandenbrande.com)
10:
11: Fixed: gdImageWBMPPtr, gdImageWBMP
12:
13: Recoded: gdImageWBMPCtx for use with my wbmp library
14: (wbmp library included, but you can find the latest distribution
15: at http://www.vandenbrande.com/wbmp)
16:
17: Implemented: gdImageCreateFromWBMPCtx, gdImageCreateFromWBMP
18:
19: ---------------------------------------------------------------------------
20:
21: Parts of this code are from Maurice Smurlo.
22:
23:
24: ** Copyright (C) Maurice Szmurlo --- T-SIT --- January 2000
25: ** (Maurice.Szmurlo@info.unicaen.fr)
26:
27: ** Permission to use, copy, modify, and distribute this software and its
28: ** documentation for any purpose and without fee is hereby granted, provided
29: ** that the above copyright notice appear in all copies and that both that
30: ** copyright notice and this permission notice appear in supporting
31: ** documentation. This software is provided "as is" without express or
32: ** implied warranty.
33:
34: ---------------------------------------------------------------------------
35: Parts od this code are inspired by 'pbmtowbmp.c' and 'wbmptopbm.c' by
36: Terje Sannum <terje@looplab.com>.
37: **
38: ** Permission to use, copy, modify, and distribute this software and its
39: ** documentation for any purpose and without fee is hereby granted, provided
40: ** that the above copyright notice appear in all copies and that both that
41: ** copyright notice and this permission notice appear in supporting
42: ** documentation. This software is provided "as is" without express or
43: ** implied warranty.
44: **
45: ---------------------------------------------------------------------------
46:
47: Todo:
48:
49: gdCreateFromWBMP function for reading WBMP files
50:
51: ----------------------------------------------------------------------------
52: */
53:
54: #include <gd.h>
55: #include <gdfonts.h>
56: #include <stdio.h>
57: #include <stdlib.h>
58: #include <limits.h>
59:
60: #include "wbmp.h"
61:
62:
63: /* gd_putout
64: ** ---------
65: ** Wrapper around gdPutC for use with writewbmp
66: **
67: */
68: void gd_putout (int i, void *out)
69: {
70: gdPutC(i, (gdIOCtx *) out);
71: }
72:
73:
74: /* gd_getin
75: ** --------
76: ** Wrapper around gdGetC for use with readwbmp
77: **
78: */
79: int gd_getin (void *in)
80: {
81: return (gdGetC((gdIOCtx *) in));
82: }
83:
84:
85: /* gdImageWBMPCtx
86: ** --------------
87: ** Write the image as a wbmp file
88: ** Parameters are:
89: ** image: gd image structure;
90: ** fg: the index of the foreground color. any other value will be
91: ** considered as background and will not be written
92: ** out: the stream where to write
93: */
94: void gdImageWBMPCtx (gdImagePtr image, int fg, gdIOCtx * out)
95: {
96: int x, y, pos;
97: Wbmp *wbmp;
98:
99: /* create the WBMP */
100: if ((wbmp = createwbmp (gdImageSX (image), gdImageSY (image), WBMP_WHITE)) == NULL) {
101: php_gd_error("Could not create WBMP");
102: }
103:
104: /* fill up the WBMP structure */
105: pos = 0;
106: for (y = 0; y < gdImageSY(image); y++) {
107: for (x = 0; x < gdImageSX(image); x++) {
108: if (gdImageGetPixel (image, x, y) == fg) {
109: wbmp->bitmap[pos] = WBMP_BLACK;
110: }
111: pos++;
112: }
113: }
114:
115: /* write the WBMP to a gd file descriptor */
116: if (writewbmp (wbmp, &gd_putout, out)) {
117: php_gd_error("Could not save WBMP");
118: }
119: /* des submitted this bugfix: gdFree the memory. */
120: freewbmp(wbmp);
121: }
122:
123: /* gdImageCreateFromWBMPCtx
124: ** ------------------------
125: ** Create a gdImage from a WBMP file input from an gdIOCtx
126: */
127: gdImagePtr gdImageCreateFromWBMPCtx (gdIOCtx * infile)
128: {
129: /* FILE *wbmp_file; */
130: Wbmp *wbmp;
131: gdImagePtr im = NULL;
132: int black, white;
133: int col, row, pos;
134:
135: if (readwbmp (&gd_getin, infile, &wbmp)) {
136: return NULL;
137: }
138:
139: if (!(im = gdImageCreate (wbmp->width, wbmp->height))) {
140: freewbmp (wbmp);
141: return NULL;
142: }
143:
144: /* create the background color */
145: white = gdImageColorAllocate(im, 255, 255, 255);
146: /* create foreground color */
147: black = gdImageColorAllocate(im, 0, 0, 0);
148:
149: /* fill in image (in a wbmp 1 = white/ 0 = black) */
150: pos = 0;
151: for (row = 0; row < wbmp->height; row++) {
152: for (col = 0; col < wbmp->width; col++) {
153: if (wbmp->bitmap[pos++] == WBMP_WHITE) {
154: gdImageSetPixel(im, col, row, white);
155: } else {
156: gdImageSetPixel(im, col, row, black);
157: }
158: }
159: }
160:
161: freewbmp(wbmp);
162:
163: return im;
164: }
165:
166: /* gdImageCreateFromWBMP
167: ** ---------------------
168: */
169: gdImagePtr gdImageCreateFromWBMP (FILE * inFile)
170: {
171: gdImagePtr im;
172: gdIOCtx *in = gdNewFileCtx(inFile);
173: im = gdImageCreateFromWBMPCtx(in);
174: in->gd_free(in);
175:
176: return im;
177: }
178:
179: gdImagePtr gdImageCreateFromWBMPPtr (int size, void *data)
180: {
181: gdImagePtr im;
182: gdIOCtx *in = gdNewDynamicCtxEx(size, data, 0);
183: im = gdImageCreateFromWBMPCtx(in);
184: in->gd_free(in);
185: return im;
186: }
187:
188: /* gdImageWBMP
189: ** -----------
190: */
191: void gdImageWBMP (gdImagePtr im, int fg, FILE * outFile)
192: {
193: gdIOCtx *out = gdNewFileCtx(outFile);
194: gdImageWBMPCtx(im, fg, out);
195: out->gd_free(out);
196: }
197:
198: /* gdImageWBMPPtr
199: ** --------------
200: */
201: void * gdImageWBMPPtr (gdImagePtr im, int *size, int fg)
202: {
203: void *rv;
204: gdIOCtx *out = gdNewDynamicCtx(2048, NULL);
205: gdImageWBMPCtx(im, fg, out);
206: rv = gdDPExtractData(out, size);
207: out->gd_free(out);
208:
209: return rv;
210: }
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