diff options
Diffstat (limited to 'tmk_core/protocol/lufa/ringbuffer.hpp')
| -rw-r--r-- | tmk_core/protocol/lufa/ringbuffer.hpp | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/tmk_core/protocol/lufa/ringbuffer.hpp b/tmk_core/protocol/lufa/ringbuffer.hpp deleted file mode 100644 index 70a3c4881..000000000 --- a/tmk_core/protocol/lufa/ringbuffer.hpp +++ /dev/null | |||
| @@ -1,66 +0,0 @@ | |||
| 1 | #pragma once | ||
| 2 | // A simple ringbuffer holding Size elements of type T | ||
| 3 | template <typename T, uint8_t Size> | ||
| 4 | class RingBuffer { | ||
| 5 | protected: | ||
| 6 | T buf_[Size]; | ||
| 7 | uint8_t head_{0}, tail_{0}; | ||
| 8 | public: | ||
| 9 | inline uint8_t nextPosition(uint8_t position) { | ||
| 10 | return (position + 1) % Size; | ||
| 11 | } | ||
| 12 | |||
| 13 | inline uint8_t prevPosition(uint8_t position) { | ||
| 14 | if (position == 0) { | ||
| 15 | return Size - 1; | ||
| 16 | } | ||
| 17 | return position - 1; | ||
| 18 | } | ||
| 19 | |||
| 20 | inline bool enqueue(const T &item) { | ||
| 21 | static_assert(Size > 1, "RingBuffer size must be > 1"); | ||
| 22 | uint8_t next = nextPosition(head_); | ||
| 23 | if (next == tail_) { | ||
| 24 | // Full | ||
| 25 | return false; | ||
| 26 | } | ||
| 27 | |||
| 28 | buf_[head_] = item; | ||
| 29 | head_ = next; | ||
| 30 | return true; | ||
| 31 | } | ||
| 32 | |||
| 33 | inline bool get(T &dest, bool commit = true) { | ||
| 34 | auto tail = tail_; | ||
| 35 | if (tail == head_) { | ||
| 36 | // No more data | ||
| 37 | return false; | ||
| 38 | } | ||
| 39 | |||
| 40 | dest = buf_[tail]; | ||
| 41 | tail = nextPosition(tail); | ||
| 42 | |||
| 43 | if (commit) { | ||
| 44 | tail_ = tail; | ||
| 45 | } | ||
| 46 | return true; | ||
| 47 | } | ||
| 48 | |||
| 49 | inline bool empty() const { return head_ == tail_; } | ||
| 50 | |||
| 51 | inline uint8_t size() const { | ||
| 52 | int diff = head_ - tail_; | ||
| 53 | if (diff >= 0) { | ||
| 54 | return diff; | ||
| 55 | } | ||
| 56 | return Size + diff; | ||
| 57 | } | ||
| 58 | |||
| 59 | inline T& front() { | ||
| 60 | return buf_[tail_]; | ||
| 61 | } | ||
| 62 | |||
| 63 | inline bool peek(T &item) { | ||
| 64 | return get(item, false); | ||
| 65 | } | ||
| 66 | }; | ||
