Kannel: Open Source WAP and SMS gateway  $Revision: 5037 $
wbmp.c
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56 
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60 #include <errno.h>
61 
62 #include "gwlib/gwlib.h"
63 #include "wbmp.h"
64 
65 
66 
67 /* create empty WBMP */
68 
70 {
71  WBMP *new;
72 
73  new = gw_malloc(sizeof(WBMP));
74  memset(new, 0, sizeof(WBMP));
75  return new;
76 }
77 
78 /* delete a WBMP, freeing everything */
79 
80 void wbmp_delete(WBMP *pic)
81 {
82  gw_free(pic->ext_header_field);
83  gw_free(pic->main_image);
84  if (pic->animated_image) {
85  int i;
86  for(i=0; i < pic->animimg_count; i++)
87  gw_free(pic->animated_image[i]);
88  gw_free(pic->animated_image);
89  }
90  gw_free(pic);
91 }
92 
93 
94 WBMP *wbmp_create(int type, int width, int height, Octet *data, int flags)
95 {
96  WBMP *new;
97  int i, siz;
98  Octet val;
99 
100  new = wbmp_create_empty();
101 
102  new->type_field = type;
103  if (type == 0) {
104  new->fix_header_field = 0x00;
105  } else {
106  error(0, "WBMP type %d not supported", type);
107  return NULL;
108  }
109  new->width = width;
110  new->height = height;
111  siz = (width+7)/8 * height;
112 
113  new->main_image = gw_malloc(siz);
114  for(i=0; i < siz; i++) {
115  if (flags & REVERSE) val = reverse_octet(data[i]);
116  else val = data[i];
117  if (flags & NEGATIVE) val = ~val;
118  new->main_image[i] = val;
119  }
120  return new;
121 }
122 
123 
124 
125 /* create Octet stream from given WBMP */
126 
127 int wbmp_create_stream(WBMP *pic, Octet **stream)
128 {
129  Octet tmp_w[30], tmp_h[30];
130  int wl, hl, pic_size;
131 
132  wl = write_variable_value(pic->width, tmp_w);
133  hl = write_variable_value(pic->height, tmp_h);
134 
135  pic_size = ((pic->width+7)/8) * pic->height;
136 
137  if (pic->type_field != 0) {
138  error(0, "Unknown WBMP type %d, cannot convert", pic->type_field);
139  return -1;
140  }
141  *stream = gw_malloc(2+wl+hl+pic_size);
142  sprintf(*stream, "%c%c", 0x00, 0x00);
143  memcpy(*stream+2, tmp_w, wl);
144  memcpy(*stream+2+wl, tmp_h, hl);
145  memcpy(*stream+2+wl+hl, pic->main_image, pic_size);
146 
147  debug("util", 0, "picture %d x %d, stream length %d",
148  pic->width, pic->height, 2+wl+hl+pic_size);
149 
150  return (2+wl+hl+pic_size);
151 }
WBMP * wbmp_create(int type, int width, int height, Octet *data, int flags)
Definition: wbmp.c:94
void error(int err, const char *fmt,...)
Definition: log.c:612
void wbmp_delete(WBMP *pic)
Definition: wbmp.c:80
#define NEGATIVE
Definition: OTAbitmap.h:94
MultibyteInt height
Definition: wbmp.h:95
int wbmp_create_stream(WBMP *pic, Octet **stream)
Definition: wbmp.c:127
Octet * main_image
Definition: wbmp.h:96
ExtParam * ext_header_field
Definition: wbmp.h:92
#define REVERSE
Definition: OTAbitmap.h:95
int type
Definition: smsc_cimd2.c:215
MultibyteInt width
Definition: wbmp.h:94
Octet reverse_octet(Octet source)
Definition: utils.c:511
Definition: wbmp.h:85
void debug(const char *place, int err, const char *fmt,...)
Definition: log.c:690
int write_variable_value(MultibyteInt value, Octet *dest)
Definition: utils.c:490
MultibyteInt type_field
Definition: wbmp.h:86
WBMP * wbmp_create_empty(void)
Definition: wbmp.c:69
int animimg_count
Definition: wbmp.h:98
unsigned char Octet
Definition: utils.h:75
Octet ** animated_image
Definition: wbmp.h:97
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