Video Memory

The following code block shows the data structure for the video memory structure.

typedef union _ST_VDO_MEM {
    STF_U8 u8BufIdx;
    STF_INT nDmaBufFd;
    STF_U32 u32Length;
    STF_VOID *pvBuffer;
    STF_U32 u32BytesUsed;
    struct timeval stTimeStamp;
    STF_BOOL8 bIsScDumpForAe;
    CI_MEM_PARAM *pstMem1;
    CI_MEM_PARAM *pstMem2;
    sCell_T stCell;
} ST_VDO_MEM, *PST_VDO_MEM;

The following table describes the fields in the above code block.

Table 1. Video Memory Field Description
Field	Description
u8BufIdx	Buffer index
nDmaBufFd	DMA buffer file descriptor
u32Length	DMA buffer size
pvBuffer	Point to user space buffer
u32BytesUsed	Indicate how many bytes be used to store image data
stTimeStamp	Store the timestamp information
bIsScDumpForAe	Indicate that this buffer is ready for AE or AWB
pstMem1	Point to user space buffer segment 1
pstMem2	Point to user space buffer segment 2
stCell	Link list data structure