//
// int FramBufMgrInit(unsigned char *pBufBase, int nBufSize)
//
// Description
// This function initializes the MfcFramBufMgr(Buffer Segment Manager)
// Parameters
// pBufBase [IN]: pointer to the buffer which will be managed by this MfcFramBufMgr functions.
// nBufSize [IN]: buffer size in bytes
// Return Value
// 1 : Success
// 0 : Fail
//
BOOL FramBufMgrInit(unsigned char *pBufBase, int nBufSize)
{
int i;
// check parameters
if (pBufBase == NULL || nBufSize == 0)
return FALSE;
// 이미 초기화가 되어 있고
// (1) 초기화 결과와 입력 파라미터 값이 같다면
// 실수로 이 함수가 두 번 호출된 것이므로 그냥 바로 1을 리턴
// (2) 같지 않다면,
// Finalize 시킨 후, 다시 재 초기화 한다.
if ((_pBufferBase != NULL) && (_nBufferSize != 0))
{
if ((pBufBase == _pBufferBase) && (nBufSize == _nBufferSize))
return TRUE;
FramBufMgrFinal();
}
_pBufferBase = pBufBase;
_nBufferSize = nBufSize;
_nNumSegs = nBufSize / BUF_SEGMENT_SIZE;
_p_segment_info = (SEGMENT_INFO *) Mem_Alloc(_nNumSegs * sizeof(SEGMENT_INFO));
for (i=0; i<_nNumSegs; i++)
{
_p_segment_info[i].pBaseAddr = pBufBase + (i * BUF_SEGMENT_SIZE);
_p_segment_info[i].idx_commit = 0;
}
_p_commit_info = (COMMIT_INFO *) Mem_Alloc(_nNumSegs * sizeof(COMMIT_INFO));
for (i=0; i<_nNumSegs; i++)
{
_p_commit_info[i].index_base_seg = -1;
_p_commit_info[i].num_segs = 0;
}
return TRUE;
}
//
// int FramBufMgrInit(unsigned char *pBufBase, int nBufSize)
//
// Description
// This function initializes the MfcFramBufMgr(Buffer Segment Manager)
// Parameters
// pBufBase [IN]: pointer to the buffer which will be managed by this MfcFramBufMgr functions.
// nBufSize [IN]: buffer size in bytes
// Return Value
// 1 : Success
// 0 : Fail
//
BOOL FramBufMgrInit(unsigned char *pBufBase, int nBufSize)
{
int i;
// check parameters
if (pBufBase == NULL || nBufSize == 0)
return FALSE;
// If the frame buffer is already initialized
// (1) and the result of initialization equals input parameters,
// You have to return 1 immediately because this function is called by misatake.
// (2) and the result of initialization does not equal input parameters,
// You have to re-initialize after finalize.
if ((_pBufferBase != NULL) && (_nBufferSize != 0)) {
if ((pBufBase == _pBufferBase) && (nBufSize == _nBufferSize))
return TRUE;
FramBufMgrFinal();
}
_pBufferBase = pBufBase;
_nBufferSize = nBufSize;
_nNumSegs = nBufSize / BUF_SEGMENT_SIZE;
_p_segment_info = (SEGMENT_INFO *) Mem_Alloc(_nNumSegs * sizeof(SEGMENT_INFO));
for (i=0; i<_nNumSegs; i++) {
_p_segment_info[i].pBaseAddr = pBufBase + (i * BUF_SEGMENT_SIZE);
_p_segment_info[i].idx_commit = 0;
}
_p_commit_info = (COMMIT_INFO *) Mem_Alloc(_nNumSegs * sizeof(COMMIT_INFO));
for (i=0; i<_nNumSegs; i++) {
_p_commit_info[i].index_base_seg = -1;
_p_commit_info[i].num_segs = 0;
}
return TRUE;
}
