Last change
on this file since 46 was
46,
checked in by Thomas Fuhrmann, 5 years ago
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Add the mavlink branch
|
File size:
1.1 KB
|
Rev | Line | |
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[46] | 1 | #ifndef _MAVLINK_GET_INFO_H_ |
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| 2 | #define _MAVLINK_GET_INFO_H_ |
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| 3 | |
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| 4 | #ifdef MAVLINK_USE_MESSAGE_INFO |
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| 5 | #define MAVLINK_HAVE_GET_MESSAGE_INFO |
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| 6 | /* |
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| 7 | return the message_info struct for a message |
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| 8 | */ |
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| 9 | MAVLINK_HELPER const mavlink_message_info_t *mavlink_get_message_info(const mavlink_message_t *msg) |
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| 10 | { |
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| 11 | static const mavlink_message_info_t mavlink_message_info[] = MAVLINK_MESSAGE_INFO; |
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| 12 | /* |
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| 13 | use a bisection search to find the right entry. A perfect hash may be better |
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| 14 | Note that this assumes the table is sorted with primary key msgid |
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| 15 | */ |
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| 16 | uint32_t msgid = msg->msgid; |
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| 17 | uint32_t low=0, high=sizeof(mavlink_message_info)/sizeof(mavlink_message_info[0]); |
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| 18 | while (low < high) { |
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| 19 | uint32_t mid = (low+1+high)/2; |
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| 20 | if (msgid < mavlink_message_info[mid].msgid) { |
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| 21 | high = mid-1; |
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| 22 | continue; |
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| 23 | } |
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| 24 | if (msgid > mavlink_message_info[mid].msgid) { |
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| 25 | low = mid; |
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| 26 | continue; |
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| 27 | } |
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| 28 | low = mid; |
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| 29 | break; |
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| 30 | } |
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| 31 | return &mavlink_message_info[low]; |
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| 32 | } |
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| 33 | #endif // MAVLINK_USE_MESSAGE_INFO |
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| 34 | |
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| 35 | #endif // _MAVLINK_GET_INFO_H_ |
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| 36 | |
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