92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
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/******************************************************************************
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Copyright (C), 2001-2016, Allwinner Tech. Co., Ltd.
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******************************************************************************
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File Name : BufferManager.h
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Version : Initial Draft
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Author : Allwinner BU3-PD2 Team
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Created : 2016/06/28
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Last Modified :
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Description : mpi functions implement
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Function List :
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History :
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******************************************************************************/
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#ifndef __BUFFER_MANAGER_H__
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#define __BUFFER_MANAGER_H__
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <mm_comm_aio.h>
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typedef struct PCMDataNode
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{
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char *pData;
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int nDataLen; //unit:bytes
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char *pDataExtra;
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int nDataExtraLen;
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int64_t nPts; //unit:us
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struct list_head mList;
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}PCMDataNode;
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typedef struct PCMBufferManager
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{
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char *mpStart;
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char *mpRead;
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char *mpWrite;
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char *mpPrefetch;
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int mTotalSize;
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int mDataSize; //all valid data size
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int mPrefetchSize; //size of data which is got.
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int mFreeSize;
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pthread_mutex_t mLock;
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int mAlsaFrameBytes;
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int mSampleRate;
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int mFrameBytes;
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/**
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PCMDataNode is used to store input frame pts and store_position in buffer, help to caculate pts of pcm data in
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arbitrary position in buffer.
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output frame is independent of input frame.
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*/
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struct list_head mIdlePCMDataList; //PCMDataNode
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struct list_head mValidPCMDataList;
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int mNodeNum;
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/**
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@return
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0: success
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-1: fail
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*/
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int (*writeData)(struct PCMBufferManager *pMgr, char *pInBuf, int inSize, int64_t nPts, bool bMute);
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/**
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@return
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0: success
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-1: fail
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*/
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int (*getData)(struct PCMBufferManager *pMgr, int reqSize, char **ppOutBuf, int *pSize, char **ppOutBufExtra, int *pSizeExtra, int64_t *pPts);
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/**
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@return
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0: success
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-1: fail
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*/
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int (*releaseData)(struct PCMBufferManager *pMgr, char *pOutBuf, int relSize);
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/**
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@return
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free size, unit: bytes
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*/
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int (*getFreeSize)(struct PCMBufferManager *pMgr);
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/**
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@return
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prefetch size, unit: bytes
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*/
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int (*getPrefetchSize)(struct PCMBufferManager *pMgr);
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} PCMBufferManager;
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PCMBufferManager *PCMBufferMgr_Create(int nFrmNum, int nFrameBytes, int nAlsaFrameBytes, int nSampleRate);
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void PCMBufferMgr_Destroy(PCMBufferManager *pMgr);
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#endif /* __BUFFER_MANAGER_H__ */
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