+ typedef struct cec_frame
+ {
+ uint8_t data[20];
+ uint8_t size;
+
+ void shift(uint8_t num)
+ {
+ for (uint8_t iPtr = 0; iPtr < num; iPtr++)
+ data[iPtr] = iPtr + num < size ? data[iPtr + num] : 0;
+ size -= num;
+ }
+
+ void push_back(uint8_t add)
+ {
+ if (size < 20)
+ data[size++] = add;
+ }
+
+ void clear(void)
+ {
+ memset(data, 0, sizeof(data));
+ size = 0;
+ }
+ } cec_frame;
+