1 files changed, 85 insertions, 0 deletions
diff --git a/inc/platform/pingpong_buffer.h b/inc/platform/pingpong_buffer.h
new file mode 100644
index 0000000..4da0c77
--- /dev/null
+++ b/inc/platform/pingpong_buffer.h
@@ -0,0 +1,85 @@
+/**
+*********************************************************************************************************
+*               Copyright(c) 2016, Realtek Semiconductor Corporation. All rights reserved.
+**********************************************************************************************************
+* @file     pingpong_buffer.h
+* @brief    This file provides APIs of PingPong Buffer.
+* @details
+* @author   Lory Xu
+* @date     2015-12-20
+* @version  v0.1
+*********************************************************************************************************
+*/
+
+#ifndef PINGPONG_BUFFER_H
+#define PINGPONG_BUFFER_H
+
+#include <stdint.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/** @brief LogMissedCounter records the number of log missed.
+    If the value is greater than 0, please reduce logs or speed up log uart/DMA.
+    */
+typedef struct
+{
+    uint8_t *pInputBuffer;
+    uint8_t *pOutputBuffer;
+    uint16_t InputBufferSize;
+    uint16_t OutputBufferSize;
+    uint32_t LogMissedCounter;
+    uint32_t MaxBufferSize;
+} PingpongBuffer;
+
+static inline uint32_t PPB_GetLogMissedCounter(PingpongBuffer *pPPB)
+{
+    return pPPB->LogMissedCounter;
+}
+
+static inline void PPB_ClearLogMissedCounter(PingpongBuffer *pPPB)
+{
+    pPPB->LogMissedCounter = 0;
+}
+
+static inline bool PPB_IsInit(PingpongBuffer *pPPB)
+{
+    return ((pPPB->pInputBuffer != NULL) && (pPPB->pOutputBuffer != NULL));
+}
+
+static inline bool PPB_IsOutputBufEmpty(PingpongBuffer *pPPB)
+{
+    return (pPPB->OutputBufferSize == 0);
+}
+
+static inline bool PPB_IsInputBufEmpty(PingpongBuffer *pPPB)
+{
+    return (pPPB->InputBufferSize == 0);
+}
+
+static inline uint16_t PPB_GetOutputBufSize(PingpongBuffer *pPPB)
+{
+    return pPPB->OutputBufferSize;
+}
+
+static inline uint16_t PPB_GetInputBufSize(PingpongBuffer *pPPB)
+{
+    return pPPB->InputBufferSize;
+}
+
+void PPB_Init(PingpongBuffer *pPPB);
+void PPB_Uninit(PingpongBuffer *pPPB);
+void PPB_Init_DLPS_Restore(PingpongBuffer *pPPB);
+void PPB_Write(PingpongBuffer *pPPB, const uint8_t *source, uint16_t size);
+void PPB_ClearOutputBuffer(PingpongBuffer *pPPB);
+void PPB_BufSwitch(PingpongBuffer *pPPB);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif