version 1.1, 2010/01/22 00:57:32
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version 1.1.1.1.2.3, 2010/03/12 15:30:46
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Line 108 inline void pelcoClose(void * __restrict p)
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Line 108 inline void pelcoClose(void * __restrict p)
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free(p); |
free(p); |
} |
} |
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/* |
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* pelcoLoad() Load packet from input buffer |
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* @buffer = Pelco packet from input buffer |
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* return: NULL error, !=NULL ok, allocated memory for packet |
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*/ |
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inline void *pelcoLoad(u_char *buffer) |
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{ |
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pelco_d_t *pd; |
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pelco_p_t *pp; |
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void *p = NULL; |
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switch (pelco_GetVersion(buffer)) { |
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case 'd': |
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if (pelco_GetCamNo(buffer) < FIRST_CAM_D) { |
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pelcoSetErr(ENOEXEC, "Error:: unsupported camera number %d!\n", |
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pelco_GetCamNo(buffer)); |
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return NULL; |
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} |
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pd = malloc(sizeof(pelco_d_t)); |
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if (!pd) { |
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SETERR; |
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return NULL; |
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} else |
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memcpy(pd, buffer, sizeof(pelco_d_t)); |
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p = pd; |
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break; |
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case 'p': |
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pp = malloc(sizeof(pelco_p_t)); |
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if (!pp) { |
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SETERR; |
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return NULL; |
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} else |
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memcpy(pp, buffer, sizeof(pelco_p_t)); |
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p = pp; |
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break; |
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default: |
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pelcoSetErr(ENOEXEC, "Error:: unsupported Pelco protocol version!\n"); |
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} |
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return p; |
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} |
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/* |
/* |
* pelcoAddCmdData() Add commands and datas for already opened packet |
* pelcoAddCmdData() Add commands and datas for already opened packet |
* @p = Input Packet structure |
* @p = Input Packet structure |
Line 159 inline u_char pelcoAddCmdData(void * __restrict p, u_c
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Line 203 inline u_char pelcoAddCmdData(void * __restrict p, u_c
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} |
} |
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return ret; |
return ret; |
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} |
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/* |
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* pelcoGetCmdData() Get from packet commands and datas with verify packet |
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* @p = Input Packet structure |
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* @cmd[2] = Output Commands 1 & 2 |
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* @data[2] = Output Data for commands 1 & 2 |
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* return: 'd' - PelcoD, 'p' - PelcoP, 0 - unknown or bad packet |
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*/ |
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inline u_char pelcoGetCmdData(void * __restrict p, u_char * __restrict cmd, u_char * __restrict data) |
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{ |
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return pelco_GetCamCmdData(p, NULL, cmd, data); |
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} |
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/* |
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* pelcoChkSum() Check ot Correct check sum in packet |
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* @p = Input Packet structure |
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* @correct = Calculate new check sum if incorrect !=0, if ==0 only check |
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* return: 0xFF - bad packet, 1 invalid check sum, 0 check sum is correct. |
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*/ |
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inline u_char pelcoChkSum(void * __restrict p, u_char correct) |
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{ |
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u_char sum, *ptr = p; |
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pelco_d_t *pd = (pelco_d_t *) p; |
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pelco_p_t *pp = (pelco_p_t *) p; |
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if (!p) { |
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pelcoSetErr(EINVAL, "Error:: invalid argument!\n"); |
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return 0xFF; |
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} |
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switch (ptr[0]) { |
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case VER_D_SYNC: |
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if (ptr[1] < FIRST_CAM_D) { |
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pelcoSetErr(ENOEXEC, "Error:: unsupported camera number %d!\n", ptr[1]); |
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return 0xFF; |
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} |
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sum = crcPelco('d', p); |
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if (correct) |
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pd->d_crc = sum; |
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break; |
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case VER_P_STX: |
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if (VER_P_ETX != ptr[6]) { |
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pelcoSetErr(ENOEXEC, "Error:: Broken Pelco P packet!\n"); |
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return 0xFF; |
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} |
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sum = crcPelco('p', p); |
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if (correct) |
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pp->p_crc = sum; |
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break; |
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default: |
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pelcoSetErr(ENOEXEC, "Error:: Invalid protocol!\n"); |
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return 0xFF; |
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} |
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return sum; |
} |
} |