1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
|
#include "sdr.h"
sdr_t* sdr_init()
{
sdr_t *sdr=NULL;
sdr = malloc( sizeof(sdr_t) );
if (sdr == NULL)
return NULL;
memset( sdr, 0, sizeof(sdr_t) );
return sdr;
}
//index of device in oter list
//return inner device list
int sdr_open_device( sdr_t *sdr, int dev_index )
{
int ret;
dongle_t *dng=NULL;
rtlsdr_dev_t *rtl=NULL;
//for now only one device will be supported
if (sdr == NULL)
return -1;
if (sdr->dongle != NULL)
return -1;
dng = malloc(sizeof(dongle_t));
memset(dng, 0, sizeof(dongle_t));
//set default values for dongle_t
DEF_DONGLE_VALUES(dng);
ret = hw_open( &rtl, (uint32_t)dev_index );
if ( ret < 0 )
{
printf("Cannot open device %02d\n", dev_index );
goto exit_dng_err;
}
ret = hw_reset_buffer( rtl );
if ( ret < 0 )
{
printf("Couldnt reset buffer\n");
goto exit_dng_err;
}
ret = hw_set_sample_rate( rtl, dng->rate );
if ( ret < 0 )
{
printf("Couldnt set sample rate to %d\n", dng->rate);
goto exit_dng_err;
}
ret = hw_set_center_freq( rtl, dng->freq );
if ( ret < 0 )
{
printf("Couldnt set frequency %d\n", dng->freq );
goto exit_dng_err;
}
ret = hw_set_tuner_gain_mode( rtl, dng->gain );
if ( ret < 0 )
{
printf("Cannot set autogain mode\n");
goto exit_dng_err;
}
ret = hw_set_agc_mode( rtl, 1 );
if ( ret < 0 )
{
printf("Cannot set agc mode\n");
goto exit_dng_err;
}
dng->dev_index = dev_index;
dng->dev = rtl;
sdr->dongle = dng;
return 0;
exit_dng_err:
free( dng );
return -1;
}
//associate audio device that going to be used
//int sdr_open_audio( sdr_t *sdr, int dev_index );//?should be just device from list or device name?
//get device structure from sdr manager by pluged device num
//dont try to free it muahaha
dongle_t* sdr_get_device_id( sdr_t *sdr, int dev_index)
{
dongle_t *dng=NULL;
if ( sdr == NULL )
return NULL;
if (sdr->dongle == NULL)
return NULL;
if (sdr->dongle->dev_index != dev_index)
{
printf("Cannot find device with such device ID\n");
return NULL;
}
return sdr->dongle;
}
//get index in list of devices of structure from outer device index
//? do we need?
//int sdr_get_dongle_idx( sdr_t *sdr, int idx );
//close device by internal list index
int sdr_close_device( sdr_t *sdr, int dev_index )
{
if ( sdr == NULL )
return -1;
if ( sdr->dongle == NULL )
{
return -1;
}
if ( sdr->dongle->dev == NULL )
return -1;
if ( sdr->dongle->dev_index != dev_index )
return -1;
hw_close( sdr->dongle->dev );
free( sdr->dongle->dev );
sdr->dongle->dev = NULL;
free( sdr->dongle );
sdr->dongle = NULL;
return 0;
}
//close sdr
//if there is opened audios then close
//if there is opened devices then close
int sdr_close( sdr_t *sdr )
{
if ( sdr != NULL )
{
if ( sdr->dongle != NULL )
{
if ( sdr->dongle->dev != NULL )
{
hw_close( sdr->dongle->dev );
free( sdr->dongle->dev );
sdr->dongle->dev = NULL;
}
free( sdr->dongle );
sdr->dongle = NULL;
}
free(sdr);
sdr = NULL;
return 0;
}
return -1;
}
//stop any action that associated with dongle
//not yet implemented
int dongle_stop( dongle_t *dongle )
{
return -1;
}
//int dongle_open( sdr_t *);
//set dongle frequency
int dongle_set_freq( dongle_t *dongle, uint32_t freq)
{
int ret = 0;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
ret = hw_set_center_freq( dongle->dev, freq );
if ( ret < 0 )
{
printf("Cannot set device frequency to %ud\n", freq);
return -1;
}
return 0;
}
//set gain
int dongle_set_gain( dongle_t *dongle, int gain)
{
int ret;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
ret = hw_set_tuner_gain_mode( dongle->dev, gain );
if ( ret < 0 )
{
printf("Cannot set tunner gain level %d\n", gain );
return -1;
}
return 0;
}
//set dongle sample rate
int dongle_set_sample_rate( dongle_t *dongle, uint32_t rate )
{
int ret;
if ( dongle == NULL )
{
return -1;
}
if ( dongle->dev == NULL )
return -1;
ret = hw_set_sample_rate( dongle->dev, rate );
if ( ret < 0 )
{
printf("Cannot set sample rate %ud\n", rate);
return -1;
}
return 0;
}
int dongle_set_agc( dongle_t *dongle, int mode)
{
int ret;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
//need mode check things
ret = hw_set_agc_mode( dongle->dev, mode );
if ( ret < 0 )
{
printf("Cannot set agc gain mode\n");
return -1;
}
return 0;
}
uint32_t dongle_get_freq( dongle_t *dongle )
{
return dongle->freq;
}
int dongle_get_gain( dongle_t *dongle )
{
return dongle->gain;
}
uint32_t dongle_get_sample_rate( dongle_t *dongle )
{
return dongle->rate;
}
int dongle_read_samples( dongle_t *dongle, uint8_t *buf, int len )
{
int ret, read_num;
if ( dongle == NULL )
return -1;
if ( dongle->dev == NULL )
return -1;
ret = hw_read_sync( dongle->dev, buf, len, &read_num );
if ( ret < 0 )
{
printf("Couldnt read samples\n");
return -1;
}
return 0;
}
|
