BaseVideoFilter.cpp
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上传日期:2015-12-05
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- /*
- * Copyright (C) 2003-2005 Gabest
- * http://www.gabest.org
- *
- * This Program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This Program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Make; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- */
- #include "StdAfx.h"
- #include <mmintrin.h>
- #include "BaseVideoFilter.h"
- #include "......DSUtilDSUtil.h"
- #include "......DSUtilMediaTypes.h"
- #include <initguid.h>
- #include "........includemoreuuids.h"
- //
- // CBaseVideoFilter
- //
- CBaseVideoFilter::CBaseVideoFilter(TCHAR* pName, LPUNKNOWN lpunk, HRESULT* phr, REFCLSID clsid)
- : CTransformFilter(pName, lpunk, clsid)
- {
- if(phr) *phr = S_OK;
- if(!(m_pInput = new CBaseVideoInputPin(NAME("CBaseVideoInputPin"), this, phr, L"Video"))) *phr = E_OUTOFMEMORY;
- if(FAILED(*phr)) return;
- if(!(m_pOutput = new CBaseVideoOutputPin(NAME("CBaseVideoOutputPin"), this, phr, L"Output"))) *phr = E_OUTOFMEMORY;
- if(FAILED(*phr)) {delete m_pInput, m_pInput = NULL; return;}
- m_wout = m_win = m_w = 0;
- m_hout = m_hin = m_h = 0;
- m_arxout = m_arxin = m_arx = 0;
- m_aryout = m_aryin = m_ary = 0;
- }
- CBaseVideoFilter::~CBaseVideoFilter()
- {
- }
- int CBaseVideoFilter::GetPinCount()
- {
- return 2;
- }
- CBasePin* CBaseVideoFilter::GetPin(int n)
- {
- switch(n)
- {
- case 0: return m_pInput;
- case 1: return m_pOutput;
- }
- return NULL;
- }
- HRESULT CBaseVideoFilter::Receive(IMediaSample* pIn)
- {
- _mm_empty(); // just for safety
- CAutoLock cAutoLock(&m_csReceive);
- HRESULT hr;
- AM_SAMPLE2_PROPERTIES* const pProps = m_pInput->SampleProps();
- if(pProps->dwStreamId != AM_STREAM_MEDIA)
- return m_pOutput->Deliver(pIn);
- AM_MEDIA_TYPE* pmt;
- if(SUCCEEDED(pIn->GetMediaType(&pmt)) && pmt)
- {
- CMediaType mt(*pmt);
- m_pInput->SetMediaType(&mt);
- DeleteMediaType(pmt);
- }
- if(FAILED(hr = Transform(pIn)))
- return hr;
- return S_OK;
- }
- HRESULT CBaseVideoFilter::GetDeliveryBuffer(int w, int h, IMediaSample** ppOut)
- {
- CheckPointer(ppOut, E_POINTER);
- HRESULT hr;
- if(FAILED(hr = ReconnectOutput(w, h)))
- return hr;
- if(FAILED(hr = m_pOutput->GetDeliveryBuffer(ppOut, NULL, NULL, 0)))
- return hr;
- AM_MEDIA_TYPE* pmt;
- if(SUCCEEDED((*ppOut)->GetMediaType(&pmt)) && pmt)
- {
- CMediaType mt = *pmt;
- m_pOutput->SetMediaType(&mt);
- DeleteMediaType(pmt);
- }
- (*ppOut)->SetDiscontinuity(FALSE);
- (*ppOut)->SetSyncPoint(TRUE);
- // FIXME: hell knows why but without this the overlay mixer starts very skippy
- // (don't enable this for other renderers, the old for example will go crazy if you do)
- if(GetCLSID(m_pOutput->GetConnected()) == CLSID_OverlayMixer)
- (*ppOut)->SetDiscontinuity(TRUE);
- return S_OK;
- }
- HRESULT CBaseVideoFilter::ReconnectOutput(int w, int h)
- {
- CMediaType& mt = m_pOutput->CurrentMediaType();
- int w_org = m_w;
- int h_org = m_h;
- bool fForceReconnection = false;
- if(w != m_w || h != m_h)
- {
- fForceReconnection = true;
- m_w = w;
- m_h = h;
- }
- HRESULT hr = S_OK;
- if(fForceReconnection || m_w != m_wout || m_h != m_hout || m_arx != m_arxout || m_ary != m_aryout)
- {
- if(GetCLSID(m_pOutput->GetConnected()) == CLSID_VideoRenderer)
- {
- NotifyEvent(EC_ERRORABORT, 0, 0);
- return E_FAIL;
- }
- BITMAPINFOHEADER* bmi = NULL;
- if(mt.formattype == FORMAT_VideoInfo)
- {
- VIDEOINFOHEADER* vih = (VIDEOINFOHEADER*)mt.Format();
- SetRect(&vih->rcSource, 0, 0, m_w, m_h);
- SetRect(&vih->rcTarget, 0, 0, m_w, m_h);
- bmi = &vih->bmiHeader;
- bmi->biXPelsPerMeter = m_w * m_ary;
- bmi->biYPelsPerMeter = m_h * m_arx;
- }
- else if(mt.formattype == FORMAT_VideoInfo2)
- {
- VIDEOINFOHEADER2* vih = (VIDEOINFOHEADER2*)mt.Format();
- SetRect(&vih->rcSource, 0, 0, m_w, m_h);
- SetRect(&vih->rcTarget, 0, 0, m_w, m_h);
- bmi = &vih->bmiHeader;
- vih->dwPictAspectRatioX = m_arx;
- vih->dwPictAspectRatioY = m_ary;
- }
- bmi->biWidth = m_w;
- bmi->biHeight = m_h;
- bmi->biSizeImage = m_w*m_h*bmi->biBitCount>>3;
- hr = m_pOutput->GetConnected()->QueryAccept(&mt);
- ASSERT(SUCCEEDED(hr)); // should better not fail, after all "mt" is the current media type, just with a different resolution
- HRESULT hr1 = 0, hr2 = 0;
- CComPtr<IMediaSample> pOut;
- if(SUCCEEDED(hr1 = m_pOutput->GetConnected()->ReceiveConnection(m_pOutput, &mt))
- && SUCCEEDED(hr2 = m_pOutput->GetDeliveryBuffer(&pOut, NULL, NULL, 0)))
- {
- AM_MEDIA_TYPE* pmt;
- if(SUCCEEDED(pOut->GetMediaType(&pmt)) && pmt)
- {
- CMediaType mt = *pmt;
- m_pOutput->SetMediaType(&mt);
- DeleteMediaType(pmt);
- }
- else // stupid overlay mixer won't let us know the new pitch...
- {
- long size = pOut->GetSize();
- bmi->biWidth = size / bmi->biHeight * 8 / bmi->biBitCount;
- }
- }
- else
- {
- m_w = w_org;
- m_h = h_org;
- return E_FAIL;
- }
- m_wout = m_w;
- m_hout = m_h;
- m_arxout = m_arx;
- m_aryout = m_ary;
- // some renderers don't send this
- NotifyEvent(EC_VIDEO_SIZE_CHANGED, MAKELPARAM(m_w, m_h), 0);
- return S_OK;
- }
- return S_FALSE;
- }
- HRESULT CBaseVideoFilter::CopyBuffer(BYTE* pOut, BYTE* pIn, int w, int h, int pitchIn, const GUID& subtype)
- {
- int abs_h = abs(h);
- BYTE* pInYUV[3] = {pIn, pIn + pitchIn*abs_h, pIn + pitchIn*abs_h + (pitchIn>>1)*(abs_h>>1)};
- return CopyBuffer(pOut, pInYUV, w, h, pitchIn, subtype);
- }
- HRESULT CBaseVideoFilter::CopyBuffer(BYTE* pOut, BYTE** ppIn, int w, int h, int pitchIn, const GUID& subtype)
- {
- BITMAPINFOHEADER bihOut;
- ExtractBIH(&m_pOutput->CurrentMediaType(), &bihOut);
- int pitchOut = 0;
- if(bihOut.biCompression == BI_RGB || bihOut.biCompression == BI_BITFIELDS)
- {
- pitchOut = bihOut.biWidth*bihOut.biBitCount>>3;
- if(bihOut.biHeight > 0)
- {
- pOut += pitchOut*(h-1);
- pitchOut = -pitchOut;
- if(h < 0) h = -h;
- }
- }
- if(h < 0)
- {
- h = -h;
- ppIn[0] += pitchIn*(h-1);
- ppIn[1] += (pitchIn>>1)*((h>>1)-1);
- ppIn[2] += (pitchIn>>1)*((h>>1)-1);
- pitchIn = -pitchIn;
- }
- if(subtype == MEDIASUBTYPE_I420 || subtype == MEDIASUBTYPE_IYUV || subtype == MEDIASUBTYPE_YV12)
- {
- BYTE* pIn = ppIn[0];
- BYTE* pInU = ppIn[1];
- BYTE* pInV = ppIn[2];
- if(subtype == MEDIASUBTYPE_YV12) {BYTE* tmp = pInU; pInU = pInV; pInV = tmp;}
- BYTE* pOutU = pOut + bihOut.biWidth*h;
- BYTE* pOutV = pOut + bihOut.biWidth*h*5/4;
- if(bihOut.biCompression == '21VY') {BYTE* tmp = pOutU; pOutU = pOutV; pOutV = tmp;}
- ASSERT(w <= abs(pitchIn));
- if(bihOut.biCompression == '2YUY')
- {
- BitBltFromI420ToYUY2(w, h, pOut, bihOut.biWidth*2, pIn, pInU, pInV, pitchIn);
- }
- else if(bihOut.biCompression == '024I' || bihOut.biCompression == 'VUYI' || bihOut.biCompression == '21VY')
- {
- BitBltFromI420ToI420(w, h, pOut, pOutU, pOutV, bihOut.biWidth, pIn, pInU, pInV, pitchIn);
- }
- else if(bihOut.biCompression == BI_RGB || bihOut.biCompression == BI_BITFIELDS)
- {
- if(!BitBltFromI420ToRGB(w, h, pOut, pitchOut, bihOut.biBitCount, pIn, pInU, pInV, pitchIn))
- {
- for(DWORD y = 0; y < h; y++, pOut += pitchOut)
- memset(pOut, 0, pitchOut);
- }
- }
- }
- else if(subtype == MEDIASUBTYPE_YUY2)
- {
- if(bihOut.biCompression == '2YUY')
- {
- BitBltFromYUY2ToYUY2(w, h, pOut, bihOut.biWidth*2, ppIn[0], pitchIn);
- }
- else if(bihOut.biCompression == BI_RGB || bihOut.biCompression == BI_BITFIELDS)
- {
- if(!BitBltFromYUY2ToRGB(w, h, pOut, pitchOut, bihOut.biBitCount, ppIn[0], pitchIn))
- {
- for(DWORD y = 0; y < h; y++, pOut += pitchOut)
- memset(pOut, 0, pitchOut);
- }
- }
- }
- else if(subtype == MEDIASUBTYPE_ARGB32 || subtype == MEDIASUBTYPE_RGB32 || subtype == MEDIASUBTYPE_RGB24 || subtype == MEDIASUBTYPE_RGB565)
- {
- int sbpp =
- subtype == MEDIASUBTYPE_ARGB32 || subtype == MEDIASUBTYPE_RGB32 ? 32 :
- subtype == MEDIASUBTYPE_RGB24 ? 24 :
- subtype == MEDIASUBTYPE_RGB565 ? 16 : 0;
- if(bihOut.biCompression == '2YUY')
- {
- // TODO
- // BitBltFromRGBToYUY2();
- }
- else if(bihOut.biCompression == BI_RGB || bihOut.biCompression == BI_BITFIELDS)
- {
- if(!BitBltFromRGBToRGB(w, h, pOut, pitchOut, bihOut.biBitCount, ppIn[0], pitchIn, sbpp))
- {
- for(DWORD y = 0; y < h; y++, pOut += pitchOut)
- memset(pOut, 0, pitchOut);
- }
- }
- }
- else
- {
- return VFW_E_TYPE_NOT_ACCEPTED;
- }
- return S_OK;
- }
- HRESULT CBaseVideoFilter::CheckInputType(const CMediaType* mtIn)
- {
- BITMAPINFOHEADER bih;
- ExtractBIH(mtIn, &bih);
- return mtIn->majortype == MEDIATYPE_Video
- && (mtIn->subtype == MEDIASUBTYPE_YV12
- || mtIn->subtype == MEDIASUBTYPE_I420
- || mtIn->subtype == MEDIASUBTYPE_IYUV
- || mtIn->subtype == MEDIASUBTYPE_YUY2
- || mtIn->subtype == MEDIASUBTYPE_ARGB32
- || mtIn->subtype == MEDIASUBTYPE_RGB32
- || mtIn->subtype == MEDIASUBTYPE_RGB24
- || mtIn->subtype == MEDIASUBTYPE_RGB565)
- && (mtIn->formattype == FORMAT_VideoInfo
- || mtIn->formattype == FORMAT_VideoInfo2)
- && bih.biHeight > 0
- ? S_OK
- : VFW_E_TYPE_NOT_ACCEPTED;
- }
- HRESULT CBaseVideoFilter::CheckTransform(const CMediaType* mtIn, const CMediaType* mtOut)
- {
- if(FAILED(CheckInputType(mtIn)) || mtOut->majortype != MEDIATYPE_Video)
- return VFW_E_TYPE_NOT_ACCEPTED;
- if(mtIn->majortype == MEDIATYPE_Video
- && (mtIn->subtype == MEDIASUBTYPE_YV12
- || mtIn->subtype == MEDIASUBTYPE_I420
- || mtIn->subtype == MEDIASUBTYPE_IYUV))
- {
- if(mtOut->subtype != MEDIASUBTYPE_YV12
- && mtOut->subtype != MEDIASUBTYPE_I420
- && mtOut->subtype != MEDIASUBTYPE_IYUV
- && mtOut->subtype != MEDIASUBTYPE_YUY2
- && mtOut->subtype != MEDIASUBTYPE_ARGB32
- && mtOut->subtype != MEDIASUBTYPE_RGB32
- && mtOut->subtype != MEDIASUBTYPE_RGB24
- && mtOut->subtype != MEDIASUBTYPE_RGB565)
- return VFW_E_TYPE_NOT_ACCEPTED;
- }
- else if(mtIn->majortype == MEDIATYPE_Video
- && (mtIn->subtype == MEDIASUBTYPE_YUY2))
- {
- if(mtOut->subtype != MEDIASUBTYPE_YUY2
- && mtOut->subtype != MEDIASUBTYPE_ARGB32
- && mtOut->subtype != MEDIASUBTYPE_RGB32
- && mtOut->subtype != MEDIASUBTYPE_RGB24
- && mtOut->subtype != MEDIASUBTYPE_RGB565)
- return VFW_E_TYPE_NOT_ACCEPTED;
- }
- else if(mtIn->majortype == MEDIATYPE_Video
- && (mtIn->subtype == MEDIASUBTYPE_ARGB32
- || mtIn->subtype == MEDIASUBTYPE_RGB32
- || mtIn->subtype == MEDIASUBTYPE_RGB24
- || mtIn->subtype == MEDIASUBTYPE_RGB565))
- {
- if(mtOut->subtype != MEDIASUBTYPE_ARGB32
- && mtOut->subtype != MEDIASUBTYPE_RGB32
- && mtOut->subtype != MEDIASUBTYPE_RGB24
- && mtOut->subtype != MEDIASUBTYPE_RGB565)
- return VFW_E_TYPE_NOT_ACCEPTED;
- }
- return S_OK;
- }
- HRESULT CBaseVideoFilter::CheckOutputType(const CMediaType& mtOut)
- {
- int wout = 0, hout = 0, arxout = 0, aryout = 0;
- return ExtractDim(&mtOut, wout, hout, arxout, aryout)
- && m_h == abs((int)hout)
- && mtOut.subtype != MEDIASUBTYPE_ARGB32
- ? S_OK
- : VFW_E_TYPE_NOT_ACCEPTED;
- }
- HRESULT CBaseVideoFilter::DecideBufferSize(IMemAllocator* pAllocator, ALLOCATOR_PROPERTIES* pProperties)
- {
- if(m_pInput->IsConnected() == FALSE) return E_UNEXPECTED;
- BITMAPINFOHEADER bih;
- ExtractBIH(&m_pOutput->CurrentMediaType(), &bih);
- pProperties->cBuffers = 1;
- pProperties->cbBuffer = bih.biSizeImage;
- pProperties->cbAlign = 1;
- pProperties->cbPrefix = 0;
- HRESULT hr;
- ALLOCATOR_PROPERTIES Actual;
- if(FAILED(hr = pAllocator->SetProperties(pProperties, &Actual)))
- return hr;
- return pProperties->cBuffers > Actual.cBuffers || pProperties->cbBuffer > Actual.cbBuffer
- ? E_FAIL
- : NOERROR;
- }
- HRESULT CBaseVideoFilter::GetMediaType(int iPosition, CMediaType* pmt)
- {
- if(m_pInput->IsConnected() == FALSE) return E_UNEXPECTED;
- struct {const GUID* subtype; WORD biPlanes, biBitCount; DWORD biCompression;} fmts[] =
- {
- {&MEDIASUBTYPE_YV12, 3, 12, '21VY'},
- {&MEDIASUBTYPE_I420, 3, 12, '024I'},
- {&MEDIASUBTYPE_IYUV, 3, 12, 'VUYI'},
- {&MEDIASUBTYPE_YUY2, 1, 16, '2YUY'},
- {&MEDIASUBTYPE_ARGB32, 1, 32, BI_RGB},
- {&MEDIASUBTYPE_RGB32, 1, 32, BI_RGB},
- {&MEDIASUBTYPE_RGB24, 1, 24, BI_RGB},
- {&MEDIASUBTYPE_RGB565, 1, 16, BI_RGB},
- {&MEDIASUBTYPE_RGB555, 1, 16, BI_RGB},
- {&MEDIASUBTYPE_ARGB32, 1, 32, BI_BITFIELDS},
- {&MEDIASUBTYPE_RGB32, 1, 32, BI_BITFIELDS},
- {&MEDIASUBTYPE_RGB24, 1, 24, BI_BITFIELDS},
- {&MEDIASUBTYPE_RGB565, 1, 16, BI_BITFIELDS},
- {&MEDIASUBTYPE_RGB555, 1, 16, BI_BITFIELDS},
- };
- // this will make sure we won't connect to the old renderer in dvd mode
- // that renderer can't switch the format dynamically
- bool fFoundDVDNavigator = false;
- CComPtr<IBaseFilter> pBF = this;
- CComPtr<IPin> pPin = m_pInput;
- for(; !fFoundDVDNavigator && (pBF = GetFilterFromPin(GetUpStreamPin(pBF, pPin))); pPin = GetFirstPin(pBF))
- fFoundDVDNavigator = GetCLSID(pBF) == CLSID_DVDNavigator;
- if(fFoundDVDNavigator || m_pInput->CurrentMediaType().formattype == FORMAT_VideoInfo2)
- iPosition = iPosition*2;
- //
- if(iPosition < 0) return E_INVALIDARG;
- if(iPosition >= 2*countof(fmts)) return VFW_S_NO_MORE_ITEMS;
- pmt->majortype = MEDIATYPE_Video;
- pmt->subtype = *fmts[iPosition/2].subtype;
- int w = m_win, h = m_hin, arx = m_arxin, ary = m_aryin;
- GetOutputSize(w, h, arx, ary);
- BITMAPINFOHEADER bihOut;
- memset(&bihOut, 0, sizeof(bihOut));
- bihOut.biSize = sizeof(bihOut);
- bihOut.biWidth = w;
- bihOut.biHeight = h;
- bihOut.biPlanes = fmts[iPosition/2].biPlanes;
- bihOut.biBitCount = fmts[iPosition/2].biBitCount;
- bihOut.biCompression = fmts[iPosition/2].biCompression;
- bihOut.biSizeImage = w*h*bihOut.biBitCount>>3;
- if(iPosition&1)
- {
- pmt->formattype = FORMAT_VideoInfo;
- VIDEOINFOHEADER* vih = (VIDEOINFOHEADER*)pmt->AllocFormatBuffer(sizeof(VIDEOINFOHEADER));
- memset(vih, 0, sizeof(VIDEOINFOHEADER));
- vih->bmiHeader = bihOut;
- vih->bmiHeader.biXPelsPerMeter = vih->bmiHeader.biWidth * ary;
- vih->bmiHeader.biYPelsPerMeter = vih->bmiHeader.biHeight * arx;
- }
- else
- {
- pmt->formattype = FORMAT_VideoInfo2;
- VIDEOINFOHEADER2* vih = (VIDEOINFOHEADER2*)pmt->AllocFormatBuffer(sizeof(VIDEOINFOHEADER2));
- memset(vih, 0, sizeof(VIDEOINFOHEADER2));
- vih->bmiHeader = bihOut;
- vih->dwPictAspectRatioX = arx;
- vih->dwPictAspectRatioY = ary;
- vih->dwCopyProtectFlags &= ~AMCOPYPROTECT_RestrictDuplication; // hehe
- }
- CMediaType& mt = m_pInput->CurrentMediaType();
- // these fields have the same field offset in all four structs
- ((VIDEOINFOHEADER*)pmt->Format())->AvgTimePerFrame = ((VIDEOINFOHEADER*)mt.Format())->AvgTimePerFrame;
- ((VIDEOINFOHEADER*)pmt->Format())->dwBitRate = ((VIDEOINFOHEADER*)mt.Format())->dwBitRate;
- ((VIDEOINFOHEADER*)pmt->Format())->dwBitErrorRate = ((VIDEOINFOHEADER*)mt.Format())->dwBitErrorRate;
- CorrectMediaType(pmt);
- return S_OK;
- }
- HRESULT CBaseVideoFilter::SetMediaType(PIN_DIRECTION dir, const CMediaType* pmt)
- {
- if(dir == PINDIR_INPUT)
- {
- m_w = m_h = m_arx = m_ary = 0;
- ExtractDim(pmt, m_w, m_h, m_arx, m_ary);
- m_win = m_w;
- m_hin = m_h;
- m_arxin = m_arx;
- m_aryin = m_ary;
- GetOutputSize(m_w, m_h, m_arx, m_ary);
- }
- else if(dir == PINDIR_OUTPUT)
- {
- int wout = 0, hout = 0, arxout = 0, aryout = 0;
- ExtractDim(pmt, wout, hout, arxout, aryout);
- if(m_w == wout && m_h == hout && m_arx == arxout && m_ary == aryout)
- {
- m_wout = wout;
- m_hout = hout;
- m_arxout = arxout;
- m_aryout = aryout;
- }
- }
- return __super::SetMediaType(dir, pmt);
- }
- //
- // CBaseVideoInputAllocator
- //
-
- CBaseVideoInputAllocator::CBaseVideoInputAllocator(HRESULT* phr)
- : CMemAllocator(NAME("CBaseVideoInputAllocator"), NULL, phr)
- {
- if(phr) *phr = S_OK;
- }
- void CBaseVideoInputAllocator::SetMediaType(const CMediaType& mt)
- {
- m_mt = mt;
- }
- STDMETHODIMP CBaseVideoInputAllocator::GetBuffer(IMediaSample** ppBuffer, REFERENCE_TIME* pStartTime, REFERENCE_TIME* pEndTime, DWORD dwFlags)
- {
- if(!m_bCommitted)
- return VFW_E_NOT_COMMITTED;
- HRESULT hr = __super::GetBuffer(ppBuffer, pStartTime, pEndTime, dwFlags);
- if(SUCCEEDED(hr) && m_mt.majortype != GUID_NULL)
- {
- (*ppBuffer)->SetMediaType(&m_mt);
- m_mt.majortype = GUID_NULL;
- }
- return hr;
- }
- //
- // CBaseVideoInputPin
- //
- CBaseVideoInputPin::CBaseVideoInputPin(TCHAR* pObjectName, CBaseVideoFilter* pFilter, HRESULT* phr, LPCWSTR pName)
- : CTransformInputPin(pObjectName, pFilter, phr, pName)
- , m_pAllocator(NULL)
- {
- }
- CBaseVideoInputPin::~CBaseVideoInputPin()
- {
- delete m_pAllocator;
- }
- STDMETHODIMP CBaseVideoInputPin::GetAllocator(IMemAllocator** ppAllocator)
- {
- CheckPointer(ppAllocator, E_POINTER);
- if(m_pAllocator == NULL)
- {
- HRESULT hr = S_OK;
- m_pAllocator = new CBaseVideoInputAllocator(&hr);
- m_pAllocator->AddRef();
- }
- (*ppAllocator = m_pAllocator)->AddRef();
- return S_OK;
- }
- STDMETHODIMP CBaseVideoInputPin::ReceiveConnection(IPin* pConnector, const AM_MEDIA_TYPE* pmt)
- {
- CAutoLock cObjectLock(m_pLock);
- if(m_Connected)
- {
- CMediaType mt(*pmt);
- if(FAILED(CheckMediaType(&mt)))
- return VFW_E_TYPE_NOT_ACCEPTED;
- ALLOCATOR_PROPERTIES props, actual;
- CComPtr<IMemAllocator> pMemAllocator;
- if(FAILED(GetAllocator(&pMemAllocator))
- || FAILED(pMemAllocator->Decommit())
- || FAILED(pMemAllocator->GetProperties(&props)))
- return E_FAIL;
- BITMAPINFOHEADER bih;
- if(ExtractBIH(pmt, &bih) && bih.biSizeImage)
- props.cbBuffer = bih.biSizeImage;
- if(FAILED(pMemAllocator->SetProperties(&props, &actual))
- || FAILED(pMemAllocator->Commit())
- || props.cbBuffer != actual.cbBuffer)
- return E_FAIL;
- if(m_pAllocator)
- m_pAllocator->SetMediaType(mt);
- return SetMediaType(&mt) == S_OK
- ? S_OK
- : VFW_E_TYPE_NOT_ACCEPTED;
- }
- return __super::ReceiveConnection(pConnector, pmt);
- }
- //
- // CBaseVideoOutputPin
- //
- CBaseVideoOutputPin::CBaseVideoOutputPin(TCHAR* pObjectName, CBaseVideoFilter* pFilter, HRESULT* phr, LPCWSTR pName)
- : CTransformOutputPin(pObjectName, pFilter, phr, pName)
- {
- }
- HRESULT CBaseVideoOutputPin::CheckMediaType(const CMediaType* mtOut)
- {
- if(IsConnected())
- {
- HRESULT hr = ((CBaseVideoFilter*)m_pFilter)->CheckOutputType(*mtOut);
- if(FAILED(hr)) return hr;
- }
- return __super::CheckMediaType(mtOut);
- }