| 18 | typename T |
| 19 | > |
| 20 | class circular_buffer |
| 21 | { |
| 22 | public: |
| 23 | typedef default_memory_manager mem_manager_type; |
| 24 | typedef T value_type; |
| 25 | typedef T type; |
| 26 | |
| 27 | circular_buffer() |
| 28 | { |
| 29 | } |
| 30 | |
| 31 | explicit circular_buffer(unsigned long s) |
| 32 | { |
| 33 | resize(s); |
| 34 | } |
| 35 | |
| 36 | void clear ( |
| 37 | ) |
| 38 | { |
| 39 | offset = 0; |
| 40 | data.clear(); |
| 41 | } |
| 42 | |
| 43 | T& operator[] ( unsigned long i) |
| 44 | { |
| 45 | DLIB_ASSERT(i < size(), |
| 46 | "\t T& circular_buffer::operator[](i)" |
| 47 | << "\n\t You have supplied an invalid index" |
| 48 | << "\n\t this: " << this |
| 49 | << "\n\t i: " << i |
| 50 | << "\n\t size(): " << size() |
| 51 | ); |
| 52 | auto index = i + offset; |
| 53 | if (index >= data.size()) |
| 54 | index -= data.size(); |
| 55 | return data[index]; |
| 56 | } |
| 57 | |
| 58 | const T& operator[] ( unsigned long i) const |
| 59 | { |
| 60 | DLIB_ASSERT(i < size(), |
| 61 | "\t const T& circular_buffer::operator[](i)" |
| 62 | << "\n\t You have supplied an invalid index" |
| 63 | << "\n\t this: " << this |
| 64 | << "\n\t i: " << i |
| 65 | << "\n\t size(): " << size() |
| 66 | ); |
| 67 | auto index = i + offset; |
| 68 | if (index >= data.size()) |
| 69 | index -= data.size(); |
| 70 | return data[index]; |
| 71 | } |
| 72 | |
| 73 | void resize(unsigned long size) |
| 74 | { |
| 75 | offset = 0; |
| 76 | data.resize(size); |
| 77 | } |