파서 필터 - DirectShow

CTransformFilter

// 입력 핀의 미디어 협상

.CheckInputType()    // virtural

called by CTransformInputPin::CheckInputType() // ???

.{SetInternalBufferSize}()

.{SetMediaType}()

.GetMediaType()    // virtual

called by CTransformOutputPin::GetMediaType() // ???
출력 핀의 미디어 타입 협상

.CheckTransform()    // virtual

출력 핀의 미디어 타입 협상이 완료될 수 있는지 여부

.DecideBufferSize()    // virtual

출력 핀의 버퍼 협상

.Transform()    // virtual

call .{CopySample}()

call .{MyTransform}()

on Stop

m_rtSampleTime = 0
CTransformFilter::Stop();

on EndFlush    // called by CTransformInputPin::EndFlush() // ???

m_rtSampleTime = 0
call CTransformFilter::EndFlush()

on NewSegment    // called by CTransformInputPin::NewSegment()

m_rtCurrentPosition = {tStartNew};
m_rtRepeatTime = UNITS;

call CTransformFilter::NewSegment()

m_mt

m_pBuffer
m_lBufferSize
m_lActualSize

m_rtCurrentPosition

m_rtSampleTime
m_rtRepeatTime

CTransformInputPin

.CompleteConnect()    // virtual    // to connect to puller

call CTransformFilter::CheckInputType()    // ???

할당자(IMemAlloctor)를 생성
call CPullPin::Connect()

call {CheckTheData}()

입력 핀의 미디어 데이터를 파싱한다.
call IAsyncReader::SyncRead()

call CTransformFilter::SetInternalBufferSize()

미디어 형을 설정한다.
call MakeMediaType()
call {CTransformFilter::SetMediaType()}

call {CTransformFilter::SetInternalBufferSize}()

on BreakConnect    // to release puller

call CPullPin::Disconnect()

on Active();                            // pause state

call CPullPin::Active()

on Inactive();                            // stop state

call CPullPin::Inactive()

.Receive()    // called by CPullPin::Receive()
on NotifyError    // called by CPullPin::OnError()

call CTransformFilter::NotifyEvent()
call EndOfStream()

on {Seek}

call CPullPin::Seek()

.BeginFlush() // ???

call CTransformFilter::BeginFlush() // ???

.EndFlush() // ???

call CTransformFilter::EndFlush() // ???

.NewSegment()

call CTransformFilter::NewSegment()

CPullPin

.Connect()

버퍼 협상

.Disconnect()

IAsyncReader와 할당자를 해제

.Active()

스레드를 생성하고 동작

.Inactive()

on EndOfStream

call CTransformInputPin::EndOfStream()

on Receive

call CTransformInputPin::Receive()

on BeginFlush

call CTransformInputPin::BeginFlush()

on EndFlush

call CTransformInputPin::EndFlush()

on NewSegment

call CTransformInputPin::NewSegment()

on OnError

call CTransformInputPin::NotifyError()

.Seek()

call .BeginFlush()
call .PauseThread()
call .EndFlush()
call .StartThread()

m_tStart
m_tStop

CTransformOutputPin

미디어 검색을 구현

CSourceSeeking

on ChangeStart

CTransformFilter::m_rtSampleTime = 0;

CTransformFilter::m_rtCurrentPosition = m_rtStart;

call CTransformInputPin::{Seek}()

on ChangeStop

CTransformFilter::m_rtSampleTime = 0;

CTransformFilter::m_rtCurrentPosition = m_rtStart;

call CTransformInputPin::{Seek}()

on ChangeRate
on SetRate

call CTransformInputPin::{Seek}()

m_rtStart
m_rtStop
m_rtDuration
m_dRateSeeking

CMediaType -> _AM_MEDIA_TYPE

.AllocFormatBuffer()
.SetType()
.SetFormatType()
.SetTemporalCompression()
.SetSubtype()
.SetSampleSize()
.pbFormat