Annotation of libaitpelco/inc/aitpelco.h, revision 1.1.1.1
1.1 misho 1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: aitcrc.h,v 1.1.1.1.2.1 2008/11/05 17:29:19 misho Exp $
7: *
8: *************************************************************************/
9: #ifndef __AITPELCO_H
10: #define __AITPELCO_H
11:
12:
13: #include <sys/types.h>
14:
15:
16: #define PELCO_D_LEN 7
17: #define PELCO_P_LEN 8
18:
19: #define FIXED_ZERO 0
20:
21: #define VER_D_SYNC 0xFF
22: #define VER_P_STX 0xA0
23: #define VER_P_ETX 0xAF
24:
25: #define FIRST_CAM_D 1
26: #define FIRST_CAM_P 0
27:
28: #define SPEED_MIN 0x00
29: #define SPEED_HI 0x3F
30: #define SPEED_MAX 0x40
31:
32: #define PAN_STOP SPEED_MIN
33: #define PAN_FAST SPEED_HI
34: #define PAN_TURBO SPEED_MAX
35: #define TILT_STOP SPEED_MIN
36: #define TILT_FAST SPEED_HI
37:
38:
39: /* Pelco-D protocol */
40:
41: // Helper Command bitField structures
42:
43: struct bitD_Cmd1 {
44: u_char focus_near:1;
45: u_char iris_open:1;
46: u_char iris_close:1;
47: u_char cam_on:1;
48: u_char auto_scan:1;
49: u_char reserved:2;
50: u_char sense:1;
51: };
52:
53: struct bitD_Cmd2 {
54: u_char fixed:1;
55: u_char pan_right:1;
56: u_char pan_left:1;
57: u_char tilt_up:1;
58: u_char tilt_down:1;
59: u_char zoom_tele:1;
60: u_char zoom_wide:1;
61: u_char focus_far:1;
62: };
63:
64: typedef struct tagPelcoD {
65: u_char d_sync;
66: u_char d_cam;
67: struct bitD_Cmd1 d_cmd1;
68: struct bitD_Cmd2 d_cmd2;
69: u_char d_data[2];
70: u_char d_crc;
71: } pelco_d_t; // 7 bytes packet
72:
73:
74: /* Pelco-P protocol */
75:
76: // Helper Data bitField structures
77:
78: struct bitP_Cmd1 {
79: u_char focus_far:1;
80: u_char focus_near:1;
81: u_char iris_open:1;
82: u_char iris_close:1;
83: u_char cam_on:1;
84: u_char auto_scan:1;
85: u_char camera:1;
86: u_char fixed:1;
87: };
88:
89: struct bitP_Cmd2 {
90: u_char for_pan_tilt:1;
91: u_char pan_right:1;
92: u_char pan_left:1;
93: u_char tilt_up:1;
94: u_char tilt_down:1;
95: u_char zoom_tele:1;
96: u_char zoom_wide:1;
97: u_char fixed:1;
98: };
99:
100: typedef struct tagPelcoP {
101: u_char p_stx;
102: u_char p_cam;
103: struct bitP_Cmd1 p_cmd1;
104: struct bitP_Cmd2 p_cmd2;
105: u_char p_data[2];
106: u_char p_etx;
107: u_char p_crc;
108: } pelco_p_t; // 8 bytes packet
109:
110:
111: // -------------------------------------------------------
112: // pelco_GetErrno() Get error code of last operation
113: inline int pelco_GetErrno();
114: // pelco_GetError() Get error text of last operation
115: inline const char *pelco_GetError();
116: // -------------------------------------------------------
117:
118:
119: /*
120: * pelcoOpen() Open packet record for camera number with Pelco version D/P
121: * @pelcoVer = Pelco protocol version Dd | Pp
122: * @camNo = Packet for camera number address
123: * return: NULL error, !=NULL ok, allocated memory for packet
124: */
125: inline void *pelcoOpen(u_char pelcoVer, u_char camNo);
126:
127: /*
128: * pelcoClose() Close packet record and free memory
129: * @p = Packet structure for close
130: */
131: inline void pelcoClose(void * __restrict p);
132:
133: /*
134: * pelcoAddCmdData() Add commands and datas for already opened packet
135: * @p = Input Packet structure
136: * @cmd[2] = Input Commands 1 & 2
137: * @data[2] = Input Data for commands 1 & 2
138: * return: 0xFF - error, 0 - ok
139: */
140: inline u_char pelcoAddCmdData(void * __restrict p, u_char * __restrict cmd, u_char * __restrict data);
141:
142:
143: /*
144: * pelco_GetVersion() Return Pelco protocol version
145: * @p = Packet structure
146: * return: 'd' - PelcoD, 'p' - PelcoP, 0 - unknown or bad packet
147: */
148: inline u_char pelco_GetVersion(void * __restrict p);
149:
150: /*
151: * pelco_GetCamNo() Get Camera number and check for valid packet
152: * @p = Packet structure
153: * return: 0xFF and pelco_GetErrno() == ENOEXEC - error,
154: any number is camera address
155: */
156: inline u_char pelco_GetCamNo(void * __restrict p);
157:
158: /*
159: * pelco_GetCamCmdData() Get from Camera commands and datas with verify packet
160: * @p = Input Packet structure
161: * @cam = Output camera number
162: * @cmd[2] = Output Commands 1 & 2
163: * @data[2] = Output Data for commands 1 & 2
164: * return: 'd' - PelcoD, 'p' - PelcoP, 0 - unknown or bad packet
165: */
166: inline u_char pelco_GetCamCmdData(void * __restrict p, u_char * __restrict cam,
167: u_char * __restrict cmd, u_char * __restrict data);
168:
169:
170: /*
171: * pelco_D_toCmd() Convert to Pelco D commands
172: * @cmd[2] = Input Commands 1 & 2
173: * @cmd1 = Output typecasted commands 1
174: * @cmd2 = Output typecasted commands 2
175: * return: 0xFF - error, !=0 return number arguments
176: */
177: inline u_char pelco_D_toCmd(u_char * __restrict cmd,
178: struct bitD_Cmd1 * __restrict cmd1, struct bitD_Cmd2 * __restrict cmd2);
179:
180: /*
181: * pelco_P_toCmd() Convert to Pelco P commands
182: * @cmd[2] = Input Commands 1 & 2
183: * @cmd1 = Output typecasted commands 1
184: * @cmd2 = Output typecasted commands 2
185: * return: 0xFF - error, !=0 return number arguments
186: */
187: inline u_char pelco_P_toCmd(u_char * __restrict cmd,
188: struct bitP_Cmd1 * __restrict cmd1, struct bitP_Cmd2 * __restrict cmd2);
189:
190: /*
191: * pelco_D_fromCmd() Convert from Pelco D commands
192: * @cmd1 = Input typecasted commands 1
193: * @cmd2 = Input typecasted commands 2
194: * @cmd[2] = Output Commands 1 & 2
195: * return: 0xFF - error, 0 - ok
196: */
197: inline u_char pelco_D_fromCmd(struct bitD_Cmd1 cmd1, struct bitD_Cmd2 cmd2,
198: u_char * __restrict cmd);
199:
200: /*
201: * pelco_P_fromCmd() Convert from Pelco P commands
202: * @cmd1 = Input typecasted commands 1
203: * @cmd2 = Input typecasted commands 2
204: * @cmd[2] = Output Commands 1 & 2
205: * return: 0xFF - error, 0 - ok
206: */
207: inline u_char pelco_P_fromCmd(struct bitP_Cmd1 cmd1, struct bitP_Cmd2 cmd2,
208: u_char * __restrict cmd);
209:
210: /*
211: * pelco_SetCamCmdData() Set Camera commands and datas
212: * @ver = Input Pelco (d | p) version
213: * @cam = Input camera number
214: * @cmd[2] = Input Commands 1 & 2
215: * @data[2] = Input Data for commands 1 & 2
216: * @p = Output Packet structure
217: * return: 0xFF - error, 0 - ok
218: */
219: inline u_char pelco_SetCamCmdData(u_char ver, u_char __restrict cam,
220: u_char * __restrict cmd, u_char * __restrict data, void * __restrict p);
221:
222:
223: #endif
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