OpenCORE cache buffer 캐쉬 버퍼

./nodes/pvdownloadmanagernode/src/pvmf_downloadmanager_node.h

에 맨 아래 부분을 보면 

///////////////////////////////////////////////////////////////////////////////

//

// Constants for setting up socket mem pool for progressive playback and shoutcast

// These constants are not tunables.

//

///////////////////////////////////////////////////////////////////////////////

#define PVMF_DOWNLOADMANAGER_TCP_BUFFER_SIZE_FOR_SC             1500

#define PVMF_DOWNLOADMANAGER_TCP_BUFFER_SIZE_FOR_PPB    64000

#define PVMF_DOWNLOADMANAGER_TCP_BUFFER_NOT_AVAILABLE   2

//#define PVMF_DOWNLOADMANAGER_TCP_BUFFER_OVERHEAD              64

#define PVMF_DOWNLOADMANAGER_TCP_BUFFER_OVERHEAD                64 //JHC fix

//#define PVMF_DOWNLOADMANAGER_TCP_AVG_SMALL_PACKET_SIZE        250

#define PVMF_DOWNLOADMANAGER_TCP_AVG_SMALL_PACKET_SIZE      2000 //JHC fix

이렇게 선언되어 있는것이 있다.

이것을 고치면 OpenCORE 의 다운로드 캐쉬 사이즈가 조정된다.

./nodes/pvdownloadmanagernode/src/pvmf_downloadmanager_node.cpp 파일 안에서

다음과 같이 적용된다.

//public API from data source initialization interface PVMFStatus PVMFDownloadManagerNode::SetSourceInitializationData(OSCL_wString& aSourceURL, PVMFFormatType& aSourceFormat, OsclAny* aSourceData) { . . . #if(PVMF_DOWNLOADMANAGER_SUPPORT_PPB) //Configure the MBDS if (iPlaybackMode == EPlaybackOnly) { // make sure we have enough TCP buffers for PPB and shoutcast if (aSourceFormat == PVMF_MIME_DATA_SOURCE_SHOUTCAST_URL) { // calculate MBDS cache size in bytes // max bitrate in bytes per second * cache size in secs uint32 bitRate = PVMF_DOWNLOADMANAGER_MAX_BITRATE_FOR_SC * 1000 / 8; uint32 cacheSize = bitRate * PVMF_DOWNLOADMANAGER_CACHE_SIZE_FOR_SC_IN_SECONDS; gprintf("!!!!!!!!!!!!!! JHC cacheSize = %d", cacheSize);

./nodes/pvmp4ffparsernode/src/pvmf_mp4ffparser_node.cpp 파일에 보면

bool PVMFMP4FFParserNode::RetrieveTrackData(PVMP4FFNodeTrackPortInfo& aTrackPortInfo) { . . . if (maxOffsetDiff > cacheSize) { gprintf("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ JHC maxOffsetDiff %d > cacheSize %d ", maxOffsetDiff ,cacheSize); // The content is poorly interleaved. ReportMP4FFParserInfoEvent(PVMFInfoPoorlyInterleavedContent); iPoorlyInterleavedContentEventSent = true; // @TODO - For now, don't treat this as EOS. // aTrackPortInfo.iState=PVMP4FFNodeTrackPortInfo::TRACKSTATE_SEND_ENDOFTRACK; }

위 처럼 cacheSize를 넘어가면 에러난다.

그리고 

./nodes/pvdownloadmanagernode/config/opencore/pvmf_downloadmanager_config.h

파일에 보면 다운로드 관련 여러가지 버퍼 조정하는 부분이 있다.