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19 | |
19 | |
20 | #include "config.h" |
20 | #include "config.h" |
21 | #include "compat.h" |
21 | #include "compat.h" |
22 | |
22 | |
23 | #include <stdlib.h> |
23 | #include <stdlib.h> |
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24 | #include <math.h> |
24 | |
25 | |
25 | #include "parse_routines.h" |
26 | #include "parse_routines.h" |
26 | #include "error.h" |
27 | #include "error.h" |
27 | |
28 | |
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29 | #ifdef DMALLOC |
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30 | #include <dmalloc.h> |
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31 | #endif |
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32 | |
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33 | static psiconv_float_t pow2(int n); |
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34 | static psiconv_string_t psiconv_read_string_aux(const psiconv_config config, |
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35 | const psiconv_buffer buf,int lev, |
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36 | psiconv_u32 off,int *length, int *status, |
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37 | int kind); |
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38 | |
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39 | /* Very inefficient, but good enough for now. By implementing it ourselves, |
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40 | we do not have to link with -lm */ |
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41 | psiconv_float_t pow2(int n) |
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42 | { |
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43 | psiconv_float_t res=1.0; |
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44 | int i; |
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45 | |
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46 | for (i = 0; i < (n<0?-n:n); i++) |
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47 | res *= 2.0; |
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48 | |
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49 | return n<0?1/res:res; |
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50 | } |
28 | psiconv_u8 psiconv_read_u8(const psiconv_buffer buf,int lev,psiconv_u32 off, |
51 | psiconv_u8 psiconv_read_u8(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off, |
29 | int *status) |
52 | int *status) |
30 | { |
53 | { |
31 | psiconv_u8 *ptr; |
54 | psiconv_u8 *ptr; |
32 | ptr = psiconv_list_get(buf,off); |
55 | ptr = psiconv_buffer_get(buf,off); |
33 | if (!ptr) { |
56 | if (!ptr) { |
34 | psiconv_warn(lev,off,"Trying byte read past the end of the file"); |
57 | psiconv_warn(config,lev,off,"Trying byte read past the end of the file"); |
35 | if (status) |
58 | if (status) |
36 | *status = -PSICONV_E_PARSE; |
59 | *status = -PSICONV_E_PARSE; |
37 | return 0; |
60 | return 0; |
38 | } |
61 | } |
39 | if (status) |
62 | if (status) |
40 | *status = 0; |
63 | *status = 0; |
41 | return *ptr; |
64 | return *ptr; |
42 | } |
65 | } |
43 | |
66 | |
44 | psiconv_u16 psiconv_read_u16(const psiconv_buffer buf,int lev,psiconv_u32 off, |
67 | psiconv_u16 psiconv_read_u16(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off, |
45 | int *status) |
68 | int *status) |
46 | { |
69 | { |
47 | psiconv_u8 *ptr0,*ptr1; |
70 | psiconv_u8 *ptr0,*ptr1; |
48 | ptr0 = psiconv_list_get(buf,off); |
71 | ptr0 = psiconv_buffer_get(buf,off); |
49 | ptr1 = psiconv_list_get(buf,off+1); |
72 | ptr1 = psiconv_buffer_get(buf,off+1); |
50 | if (!ptr0 || !ptr1) { |
73 | if (!ptr0 || !ptr1) { |
51 | psiconv_warn(lev,off,"Trying word read past the end of the file"); |
74 | psiconv_warn(config,lev,off,"Trying word read past the end of the file"); |
52 | if (status) |
75 | if (status) |
53 | *status = -PSICONV_E_PARSE; |
76 | *status = -PSICONV_E_PARSE; |
54 | return 0; |
77 | return 0; |
55 | } |
78 | } |
56 | if (status) |
79 | if (status) |
57 | *status = 0; |
80 | *status = 0; |
58 | return *ptr0 + (*ptr1 << 8); |
81 | return *ptr0 + (*ptr1 << 8); |
59 | } |
82 | } |
60 | |
83 | |
61 | psiconv_u32 psiconv_read_u32(const psiconv_buffer buf,int lev,psiconv_u32 off, |
84 | psiconv_u32 psiconv_read_u32(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off, |
62 | int *status) |
85 | int *status) |
63 | { |
86 | { |
64 | psiconv_u8 *ptr0,*ptr1,*ptr2,*ptr3; |
87 | psiconv_u8 *ptr0,*ptr1,*ptr2,*ptr3; |
65 | ptr0 = psiconv_list_get(buf,off); |
88 | ptr0 = psiconv_buffer_get(buf,off); |
66 | ptr1 = psiconv_list_get(buf,off+1); |
89 | ptr1 = psiconv_buffer_get(buf,off+1); |
67 | ptr2 = psiconv_list_get(buf,off+2); |
90 | ptr2 = psiconv_buffer_get(buf,off+2); |
68 | ptr3 = psiconv_list_get(buf,off+3); |
91 | ptr3 = psiconv_buffer_get(buf,off+3); |
69 | if (!ptr0 || !ptr1 || !ptr2 || !ptr3) { |
92 | if (!ptr0 || !ptr1 || !ptr2 || !ptr3) { |
70 | psiconv_warn(lev,off,"Trying long read past the end of the file"); |
93 | psiconv_warn(config,lev,off,"Trying long read past the end of the file"); |
71 | if (status) |
94 | if (status) |
72 | *status = -PSICONV_E_PARSE; |
95 | *status = -PSICONV_E_PARSE; |
73 | return 0; |
96 | return 0; |
74 | } |
97 | } |
75 | if (status) |
98 | if (status) |
76 | *status = 0; |
99 | *status = 0; |
77 | return *ptr0 + (*ptr1 << 8) + (*ptr2 << 16) + (*ptr3 << 24); |
100 | return *ptr0 + (*ptr1 << 8) + (*ptr2 << 16) + (*ptr3 << 24); |
78 | } |
101 | } |
79 | |
102 | |
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103 | psiconv_s32 psiconv_read_sint(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off, |
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104 | int *length,int *status) |
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105 | { |
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106 | int localstatus; |
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107 | psiconv_u32 temp; |
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108 | |
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109 | temp=psiconv_read_u32(config,buf,lev,off,&localstatus); |
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110 | if (status) |
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111 | *status = localstatus; |
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112 | if (length) |
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113 | *length = localstatus?0:4; |
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114 | |
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115 | return localstatus?0:(temp & 0x7fffffff)*(temp&0x80000000?-1:1); |
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116 | } |
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117 | |
80 | psiconv_S_t psiconv_read_S(const psiconv_buffer buf, int lev, psiconv_u32 off, |
118 | psiconv_S_t psiconv_read_S(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off, |
81 | int *length,int *status) |
119 | int *length,int *status) |
82 | { |
120 | { |
83 | psiconv_u8 temp; |
121 | psiconv_u8 temp; |
84 | psiconv_S_t res; |
122 | psiconv_S_t res; |
85 | int len,localstatus; |
123 | int len,localstatus; |
86 | |
124 | |
87 | psiconv_progress(lev+1,off,"Going to read a S length indicator"); |
125 | psiconv_progress(config,lev+1,off,"Going to read a S length indicator"); |
88 | temp = psiconv_read_u8(buf,lev+2,off,&localstatus); |
126 | temp = psiconv_read_u8(config,buf,lev+2,off,&localstatus); |
89 | if (localstatus) |
127 | if (localstatus) |
90 | goto ERROR; |
128 | goto ERROR; |
91 | if ((temp & 0x03) == 0x02) { |
129 | if ((temp & 0x03) == 0x02) { |
92 | res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 2; |
130 | res = psiconv_read_u8(config,buf,lev+2,off,&localstatus) >> 2; |
93 | if (localstatus) |
131 | if (localstatus) |
94 | goto ERROR; |
132 | goto ERROR; |
95 | len = 1; |
133 | len = 1; |
96 | psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); |
134 | psiconv_debug(config,lev+2,off,"Indicator (1 byte): %02x",res); |
97 | } else if ((temp & 0x07) == 0x03) { |
135 | } else if ((temp & 0x07) == 0x05) { |
98 | res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 3; |
136 | res = psiconv_read_u16(config,buf,lev+2,off,&localstatus) >> 3; |
99 | if (localstatus) |
137 | if (localstatus) |
100 | goto ERROR; |
138 | goto ERROR; |
101 | len = 2; |
139 | len = 2; |
102 | psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); |
140 | psiconv_debug(config,lev+2,off,"Indicator (2 bytes): %04x",res); |
103 | } else { |
141 | } else { |
104 | psiconv_warn(lev+2,off,"S indicator: unknown encoding!"); |
142 | psiconv_warn(config,lev+2,off,"S indicator: unknown encoding!"); |
105 | psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); |
143 | psiconv_debug(config,lev+2,off,"Raw data first byte: %02x",temp); |
106 | goto ERROR; |
144 | goto ERROR; |
107 | } |
145 | } |
108 | |
146 | |
109 | if (length) |
147 | if (length) |
110 | *length = len; |
148 | *length = len; |
111 | if (status) |
149 | if (status) |
112 | *status = 0; |
150 | *status = 0; |
113 | |
151 | |
114 | psiconv_progress(lev+1,off+len-1, |
152 | psiconv_progress(config,lev+1,off+len-1, |
115 | "End of S length indicator (total length: %08x)", len); |
153 | "End of S length indicator (total length: %08x)", len); |
116 | |
154 | |
117 | return res; |
155 | return res; |
118 | |
156 | |
119 | ERROR: |
157 | ERROR: |
120 | psiconv_warn(lev+1,off,"Reading of S indicator failed"); |
158 | psiconv_warn(config,lev+1,off,"Reading of S indicator failed"); |
121 | if (status) |
159 | if (status) |
122 | *status = localstatus; |
160 | *status = localstatus; |
123 | if (length) |
161 | if (length) |
124 | *length = 0; |
162 | *length = 0; |
125 | return 0; |
163 | return 0; |
126 | } |
164 | } |
127 | |
165 | |
128 | psiconv_X_t psiconv_read_X(const psiconv_buffer buf, int lev, psiconv_u32 off, |
166 | psiconv_X_t psiconv_read_X(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off, |
129 | int *length, int *status) |
167 | int *length, int *status) |
130 | { |
168 | { |
131 | psiconv_u8 temp; |
169 | psiconv_u8 temp; |
132 | psiconv_X_t res; |
170 | psiconv_X_t res; |
133 | int len,localstatus; |
171 | int len,localstatus; |
134 | |
172 | |
135 | psiconv_progress(lev+1,off,"Going to read a X length indicator"); |
173 | psiconv_progress(config,lev+1,off,"Going to read a X length indicator"); |
136 | temp = psiconv_read_u8(buf,lev+2,off,&localstatus); |
174 | temp = psiconv_read_u8(config,buf,lev+2,off,&localstatus); |
137 | if (localstatus) |
175 | if (localstatus) |
138 | goto ERROR; |
176 | goto ERROR; |
139 | if ((temp & 0x01) == 0x00) { |
177 | if ((temp & 0x01) == 0x00) { |
140 | res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 1; |
178 | res = psiconv_read_u8(config,buf,lev+2,off,&localstatus) >> 1; |
141 | if (localstatus) |
179 | if (localstatus) |
142 | goto ERROR; |
180 | goto ERROR; |
143 | len = 1; |
181 | len = 1; |
144 | psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); |
182 | psiconv_debug(config,lev+2,off,"Indicator (1 byte): %02x",res); |
145 | } else if ((temp & 0x03) == 0x01) { |
183 | } else if ((temp & 0x03) == 0x01) { |
146 | res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 2; |
184 | res = psiconv_read_u16(config,buf,lev+2,off,&localstatus) >> 2; |
147 | if (localstatus) |
185 | if (localstatus) |
148 | goto ERROR; |
186 | goto ERROR; |
149 | len = 2; |
187 | len = 2; |
150 | psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); |
188 | psiconv_debug(config,lev+2,off,"Indicator (2 bytes): %04x",res); |
151 | } else if ((temp & 0x07) == 0x03) { |
189 | } else if ((temp & 0x07) == 0x03) { |
152 | res = psiconv_read_u32(buf,lev+2,off,&localstatus) >> 3; |
190 | res = psiconv_read_u32(config,buf,lev+2,off,&localstatus) >> 3; |
153 | if (localstatus) |
191 | if (localstatus) |
154 | goto ERROR; |
192 | goto ERROR; |
155 | len = 4; |
193 | len = 4; |
156 | psiconv_debug(lev+2,off,"Indicator (4 bytes): %08x",res); |
194 | psiconv_debug(config,lev+2,off,"Indicator (4 bytes): %08x",res); |
157 | } else { |
195 | } else { |
158 | psiconv_warn(lev+2,off,"X indicator: unknown encoding!"); |
196 | psiconv_warn(config,lev+2,off,"X indicator: unknown encoding!"); |
159 | psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); |
197 | psiconv_debug(config,lev+2,off,"Raw data first byte: %02x",temp); |
160 | goto ERROR; |
198 | goto ERROR; |
161 | } |
199 | } |
162 | |
200 | |
163 | if (length) |
201 | if (length) |
164 | *length = len; |
202 | *length = len; |
165 | if (status) |
203 | if (status) |
166 | *status = 0; |
204 | *status = 0; |
167 | |
205 | |
168 | psiconv_progress(lev+1,off+len-1, |
206 | psiconv_progress(config,lev+1,off+len-1, |
169 | "End of X length indicator (total length: %08x)", len); |
207 | "End of X length indicator (total length: %08x)", len); |
170 | |
208 | |
171 | return res; |
209 | return res; |
172 | |
210 | |
173 | ERROR: |
211 | ERROR: |
174 | psiconv_warn(lev+1,off,"Reading of X indicator failed"); |
212 | psiconv_warn(config,lev+1,off,"Reading of X indicator failed"); |
175 | if (status) |
213 | if (status) |
176 | *status = localstatus; |
214 | *status = localstatus; |
177 | if (length) |
215 | if (length) |
178 | *length = 0; |
216 | *length = 0; |
179 | return 0; |
217 | return 0; |
180 | } |
218 | } |
181 | |
219 | |
182 | psiconv_length_t psiconv_read_length(const psiconv_buffer buf, int lev, |
220 | psiconv_length_t psiconv_read_length(const psiconv_config config,const psiconv_buffer buf, int lev, |
183 | psiconv_u32 off, int *length, int *status) |
221 | psiconv_u32 off, int *length, int *status) |
184 | { |
222 | { |
185 | psiconv_length_t res; |
223 | psiconv_length_t res; |
186 | int localstatus; |
224 | int localstatus; |
187 | |
225 | |
188 | res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(buf,lev,off, |
226 | res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(config,buf,lev,off, |
189 | &localstatus)); |
227 | &localstatus)); |
190 | if (localstatus) { |
228 | if (localstatus) { |
191 | psiconv_warn(lev+1,off,"Reading of length failed"); |
229 | psiconv_warn(config,lev+1,off,"Reading of length failed"); |
192 | if (length) |
230 | if (length) |
193 | *length = 0; |
231 | *length = 0; |
194 | if (status) |
232 | if (status) |
195 | *status = localstatus; |
233 | *status = localstatus; |
196 | return 0; |
234 | return 0; |
197 | } |
235 | } |
198 | psiconv_debug(lev+1,off,"Length: %f",res); |
236 | psiconv_debug(config,lev+1,off,"Length: %f",res); |
199 | if (length) |
237 | if (length) |
200 | *length = 4; |
238 | *length = 4; |
201 | if (status) |
239 | if (status) |
202 | *status = 0; |
240 | *status = 0; |
203 | return res; |
241 | return res; |
204 | } |
242 | } |
205 | |
243 | |
206 | psiconv_size_t psiconv_read_size(const psiconv_buffer buf, int lev, |
244 | psiconv_size_t psiconv_read_size(const psiconv_config config,const psiconv_buffer buf, int lev, |
207 | psiconv_u32 off, int *length, int *status) |
245 | psiconv_u32 off, int *length, int *status) |
208 | { |
246 | { |
209 | psiconv_size_t res; |
247 | psiconv_size_t res; |
210 | int localstatus; |
248 | int localstatus; |
211 | res = ((psiconv_s32) psiconv_read_u32(buf,lev,off,&localstatus)) / 20.0; |
249 | res = ((psiconv_s32) psiconv_read_u32(config,buf,lev,off,&localstatus)) / 20.0; |
212 | if (localstatus) { |
250 | if (localstatus) { |
213 | psiconv_warn(lev+1,off,"Reading of size failed"); |
251 | psiconv_warn(config,lev+1,off,"Reading of size failed"); |
214 | if (length) |
252 | if (length) |
215 | *length = 0; |
253 | *length = 0; |
216 | if (status) |
254 | if (status) |
217 | *status = localstatus; |
255 | *status = localstatus; |
218 | return 0; |
256 | return 0; |
219 | } |
257 | } |
220 | psiconv_debug(lev+1,off,"Size: %f",res); |
258 | psiconv_debug(config,lev+1,off,"Size: %f",res); |
221 | if (status) |
259 | if (status) |
222 | *status = 0; |
260 | *status = 0; |
223 | if (length) |
261 | if (length) |
224 | *length = 4; |
262 | *length = 4; |
225 | return res; |
263 | return res; |
226 | } |
264 | } |
227 | |
265 | |
228 | int psiconv_parse_bool(const psiconv_buffer buf, int lev, psiconv_u32 off, |
266 | int psiconv_parse_bool(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off, |
229 | int *length, psiconv_bool_t *result) |
267 | int *length, psiconv_bool_t *result) |
230 | { |
268 | { |
231 | psiconv_u8 temp; |
269 | psiconv_u8 temp; |
232 | int localstatus; |
270 | int localstatus; |
233 | temp = psiconv_read_u8(buf,lev,off,&localstatus); |
271 | temp = psiconv_read_u8(config,buf,lev,off,&localstatus); |
234 | if (localstatus) { |
272 | if (localstatus) { |
235 | psiconv_warn(lev+1,off,"Reading of bool failed"); |
273 | psiconv_warn(config,lev+1,off,"Reading of bool failed"); |
236 | if (length) |
274 | if (length) |
237 | *length = 0; |
275 | *length = 0; |
238 | return localstatus; |
276 | return localstatus; |
239 | } |
277 | } |
240 | if (length) |
278 | if (length) |
… | |
… | |
244 | return 0; |
282 | return 0; |
245 | } else if (temp == 1) { |
283 | } else if (temp == 1) { |
246 | *result = psiconv_bool_true; |
284 | *result = psiconv_bool_true; |
247 | return 0; |
285 | return 0; |
248 | } |
286 | } |
249 | psiconv_warn(lev+1,off,"Unknown value for boolean"); |
287 | psiconv_warn(config,lev+1,off,"Unknown value for boolean"); |
250 | psiconv_debug(lev+1,off,"Boolean value: %02x",temp); |
288 | psiconv_debug(config,lev+1,off,"Boolean value: %02x",temp); |
251 | *result = psiconv_bool_true; |
289 | *result = psiconv_bool_true; |
252 | return 0; |
290 | return 0; |
253 | } |
291 | } |
254 | |
292 | |
255 | psiconv_string_t psiconv_read_string(const psiconv_buffer buf,int lev, |
293 | psiconv_string_t psiconv_read_string(const psiconv_config config, |
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294 | const psiconv_buffer buf,int lev, |
256 | psiconv_u32 off,int *length, int *status) |
295 | psiconv_u32 off,int *length, int *status) |
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296 | { |
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297 | return psiconv_read_string_aux(config,buf,lev,off,length,status,0); |
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298 | } |
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299 | |
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300 | psiconv_string_t psiconv_read_short_string(const psiconv_config config, |
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301 | const psiconv_buffer buf,int lev, |
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302 | psiconv_u32 off,int *length, int *status) |
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303 | { |
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304 | return psiconv_read_string_aux(config,buf,lev,off,length,status,1); |
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305 | } |
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306 | |
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307 | psiconv_string_t psiconv_read_string_aux(const psiconv_config config, |
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308 | const psiconv_buffer buf,int lev, |
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309 | psiconv_u32 off,int *length, int *status, |
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310 | int kind) |
257 | { |
311 | { |
258 | int stringlen,i,leng,len,localstatus; |
312 | int stringlen,i,leng,len,localstatus; |
259 | psiconv_string_t result; |
313 | psiconv_string_t result; |
260 | char *res_copy; |
314 | char *res_copy; |
261 | |
315 | |
262 | psiconv_progress(lev+1,off,"Going to read a string"); |
316 | psiconv_progress(config,lev+1,off,"Going to read a string"); |
263 | |
317 | |
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318 | if (kind == 0) |
264 | stringlen = psiconv_read_S(buf,lev+2,off,&leng,&localstatus); |
319 | stringlen = psiconv_read_S(config,buf,lev+2,off,&leng,&localstatus); |
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320 | else { |
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321 | stringlen = psiconv_read_u8(config,buf,lev+2,off,&localstatus); |
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322 | leng = 1; |
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323 | } |
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324 | |
265 | if (localstatus) |
325 | if (localstatus) |
266 | goto ERROR1; |
326 | goto ERROR1; |
267 | psiconv_debug(lev+2,off,"Length: %i",stringlen); |
327 | psiconv_debug(config,lev+2,off,"Length: %i",stringlen); |
268 | len = leng; |
328 | len = leng; |
269 | |
329 | |
270 | result = malloc(stringlen + 1); |
330 | result = malloc(stringlen + 1); |
271 | if (!result) |
331 | if (!result) |
272 | goto ERROR1; |
332 | goto ERROR1; |
273 | for (i = 0; (i < stringlen) && !localstatus; i++) |
333 | for (i = 0; (i < stringlen) && !localstatus; i++) |
274 | result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus); |
334 | result[i] = psiconv_read_u8(config,buf,lev,off+i+len,&localstatus); |
275 | if (localstatus) |
335 | if (localstatus) |
276 | goto ERROR2; |
336 | goto ERROR2; |
277 | result[stringlen] = 0; |
337 | result[stringlen] = 0; |
278 | len += stringlen; |
338 | len += stringlen; |
279 | |
339 | |
280 | res_copy = psiconv_make_printable(result); |
340 | res_copy = psiconv_make_printable(result); |
281 | if (!res_copy) |
341 | if (!res_copy) |
282 | goto ERROR2; |
342 | goto ERROR2; |
283 | psiconv_debug(lev+2,off,"Contents: `%s'",res_copy); |
343 | psiconv_debug(config,lev+2,off,"Contents: `%s'",res_copy); |
284 | free(res_copy); |
344 | free(res_copy); |
285 | |
345 | |
286 | if (length) |
346 | if (length) |
287 | *length = len; |
347 | *length = len; |
288 | |
348 | |
289 | if (status) |
349 | if (status) |
290 | *status = 0; |
350 | *status = 0; |
291 | |
351 | |
292 | psiconv_progress(lev+1,off+len-1,"End of string (total length: %08x)",len); |
352 | psiconv_progress(config,lev+1,off+len-1,"End of string (total length: %08x)",len); |
293 | |
353 | |
294 | return result; |
354 | return result; |
295 | |
355 | |
296 | ERROR2: |
356 | ERROR2: |
297 | free(result); |
357 | free(result); |
298 | ERROR1: |
358 | ERROR1: |
299 | psiconv_warn(lev+1,off,"Reading of string failed"); |
359 | psiconv_warn(config,lev+1,off,"Reading of string failed"); |
300 | if (status) |
360 | if (status) |
301 | *status = localstatus; |
361 | *status = localstatus; |
302 | if (length) |
362 | if (length) |
303 | *length = 0; |
363 | *length = 0; |
304 | return NULL; |
364 | return NULL; |
305 | } |
365 | } |
|
|
366 | |
|
|
367 | psiconv_float_t psiconv_read_float(const psiconv_config config,const psiconv_buffer buf, int lev, |
|
|
368 | psiconv_u32 off, int *length, int *status) |
|
|
369 | { |
|
|
370 | psiconv_float_t result,bitvalue; |
|
|
371 | int res,bit; |
|
|
372 | psiconv_u32 temp=0; |
|
|
373 | |
|
|
374 | psiconv_progress(config,lev+1,off,"Going to read a float"); |
|
|
375 | |
|
|
376 | bitvalue = 0.5; |
|
|
377 | result = 1.0; |
|
|
378 | for (bit = 0x33; bit > 0; bit--) { |
|
|
379 | if ((bit == 0x33) || ((bit & 0x07) == 0x07)) |
|
|
380 | temp = psiconv_read_u8(config,buf,lev+2,off+ (bit >> 3),&res); |
|
|
381 | if (res) |
|
|
382 | goto ERROR; |
|
|
383 | if (temp & (0x01 << (bit & 0x07))) |
|
|
384 | result += bitvalue; |
|
|
385 | bitvalue /= 2.0; |
|
|
386 | } |
|
|
387 | temp = psiconv_read_u16(config,buf,lev+2,off+6,&res); |
|
|
388 | if (res) |
|
|
389 | goto ERROR; |
|
|
390 | if (temp & 0x8000) |
|
|
391 | result = -result; |
|
|
392 | temp = (temp & 0x7ff0) >> 4; |
|
|
393 | result *= pow2(((int) temp)-0x3ff); |
|
|
394 | psiconv_debug(config,lev+1,off,"Float value: %f",result); |
|
|
395 | if (length) |
|
|
396 | *length = 8; |
|
|
397 | if (*status) |
|
|
398 | *status = res; |
|
|
399 | return result; |
|
|
400 | ERROR: |
|
|
401 | psiconv_warn(config,lev+1,off,"Reading of float failed"); |
|
|
402 | if (length) |
|
|
403 | *length = 0; |
|
|
404 | if (*status) |
|
|
405 | *status = res; |
|
|
406 | return 0.0; |
|
|
407 | } |
|
|
408 | |