8.2. Design Overview

8.2.1. BitstreamSendMethod

VDEC provideBitstreamSendMethod:

• pressFrameSend (VIDEO_MODE_FRAME): eachsecondarySendcompleteoneFrameBitstreamtoDecodingdevice, eachCallonesecondarySendInterface, DecodingdeviceisthisFrameBitstreamalreadyend, startDecodingImage, need toeachsecondaryCallSendInterfaceSendBitstreammustisoneFrame.

8.2.2. Timestamp (PTS) processing

PTSrefers toiscurrentFrameinplaybacktimetimepoint, currentFramePTScanby CVI_VENC_GetFrame MediumGet, whilethisFramePTSwilletc.to CVI_VENC_SendStream time, thePTS.

8.2.3. DecodingFramestorageallocateMethod

• Common Mode: automaticcreateIONMemoryperform Framecache,IONSizeAccording todecoded width and heightautomaticallocate,notneed touser

• User Mode: userneed toUseCVI_VB_CreatePool, createVB Pool, inCreateChannelafter, through CVI_VDEC_AttachVbPool BindthisVB PooltoChannel

• Private Mode: inCreateChanneltime, willautomaticcreatePrivate VB Pool, usernotneed tomanuallycreateVB Pool, canthroughCVI_VDEC_CreateChn, SetPrivate VB Poolu32FrameBufSizeandu32FrameBufCnt

canUse CVI_VDEC_SetModParam Set enVdecVBSource toselectDecodingFramestorageallocateMethod, beforeonlySupportCOMMON and USER Mode.

UseUser Modetime, inChannelnothasdetach VB Poolbefore, notcanconnectdestroy VB Pool, need todetermineDecodercorrectendcandestroy.