Diff: USBHostMIDI/CircBuffer.h

Revision:

24:5281ea9f6e68

Parent:

23:9c1d09c6a2b6

Child:

25:c4fdd0b4e643

diff -r 9c1d09c6a2b6 -r 5281ea9f6e68 USBHostMIDI/CircBuffer.h
--- a/USBHostMIDI/CircBuffer.h	Wed Sep 17 14:29:11 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,80 +0,0 @@
-/* USBHostMidi library
- * Originaled by k.shoji
- * porting by Takuya Urakawa
- */
-
-/* mbed USBHost Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef CIRCBUFFER_H
-#define CIRCBUFFER_H
-
-#include "stdint.h"
-
-//circular buffer
-template<typename T, int size>
-class CircBuffer {
-public:
-    
-    CircBuffer() {
-        write = 0;
-        read = 0;
-    }
-
-    bool isFull() {
-        bool r = (((write + 1) % size) == read);
-        return r;
-    }
-
-    bool isEmpty() {
-        bool r = (read == write);
-        return r;
-    }
-    
-    void flush() {
-        write = 0;
-        read = 0;
-    }
-
-    void queue(T k) {
-        while (((write + 1) % size) == read) {
-            wait_ms(10);
-        }
-        buf[write++] = k;
-        write %= size;
-    }
-
-    uint16_t available() {
-        uint16_t a = (write >= read) ? (write - read) : (size - read + write);
-        return a;
-    }
-
-    bool dequeue(T * c) {
-        bool empty = (read == write);
-        if (!empty) {
-            *c = buf[read++];
-            read %= size;
-        }
-        return (!empty);
-    }
-
-private:
-    volatile uint16_t write;
-    volatile uint16_t read;
-    volatile T buf[size];
-};
-
-#endif