HRESULT HDMediaSource::SetRate(BOOL fThin,float flRate)
{
DbgLogPrintf(L"%s::SetRate... (Thin:%d, Rate:%.2f)",L"HDMediaSource",fThin,flRate);
CritSec::AutoLock lock(_cs);
HRESULT hr = CheckShutdown();
if (FAILED(hr))
return hr;
if (fThin)
return MF_E_THINNING_UNSUPPORTED;
if (flRate < MIN_MFSOURCE_RATE_SUPPORT ||
flRate > MAX_MFSOURCE_RATE_SUPPORT)
return MF_E_UNSUPPORTED_RATE;
if (flRate == _currentRate)
return _pEventQueue->QueueEventParamVar(MESourceRateChanged,GUID_NULL,S_OK,nullptr);
ComPtr<SourceOperation> op;
hr = SourceOperation::CreateSetRateOperation(fThin,flRate,op.GetAddressOf());
if (FAILED(hr))
return hr;
DbgLogPrintf(L"%s::SetRate OK.",L"HDMediaSource");
return QueueOperation(op.Get());
}
IFACEMETHODIMP CGeometricMediaSource::SetRate(BOOL fThin, float flRate)
{
if (fThin)
{
return MF_E_THINNING_UNSUPPORTED;
}
if (!IsRateSupported(flRate, &flRate))
{
return MF_E_UNSUPPORTED_RATE;
}
AutoLock lock(_critSec);
HRESULT hr = S_OK;
if (flRate == _flRate)
{
return S_OK;
}
ComPtr<CSourceOperation> spSetRateOp;
spSetRateOp.Attach(new CSetRateOperation(fThin, flRate));
if (!spSetRateOp)
{
hr = E_OUTOFMEMORY;
}
if (SUCCEEDED(hr))
{
// Queue asynchronous stop
hr = QueueOperation(spSetRateOp.Get());
}
return hr;
}
HRESULT HDMediaSource::Start(IMFPresentationDescriptor *pPresentationDescriptor,const GUID *pguidTimeFormat,const PROPVARIANT *pvarStartPosition)
{
DbgLogPrintf(L"%s::Start...",L"HDMediaSource");
if (pPresentationDescriptor == nullptr ||
pvarStartPosition == nullptr)
return E_INVALIDARG;
if ((pguidTimeFormat != nullptr) && (*pguidTimeFormat != GUID_NULL))
return MF_E_UNSUPPORTED_TIME_FORMAT; //只支持100ns
if (pvarStartPosition->vt != VT_I8 && pvarStartPosition->vt != VT_EMPTY)
return MF_E_UNSUPPORTED_TIME_FORMAT;
CritSec::AutoLock lock(_cs);
HRESULT hr = CheckShutdown();
if (FAILED(hr))
return hr;
hr = IsInitialized();
if (FAILED(hr))
return hr;
hr = ValidatePresentationDescriptor(pPresentationDescriptor);
if (FAILED(hr))
return hr;
if (_state == STATE_STARTED)
DbgLogPrintf(L"%s::was already started.",L"HDMediaSource");
ComPtr<SourceOperation> op;
hr = SourceOperation::CreateStartOperation(
pPresentationDescriptor,
_start_op_seek_time,
op.GetAddressOf());
if (FAILED(hr))
return hr;
_start_op_seek_time = PACKET_NO_PTS;
hr = op->SetData(*pvarStartPosition);
if (FAILED(hr))
return hr;
DbgLogPrintf(L"%s::Start OK.",L"HDMediaSource");
_enterReadPacketFlag = false;
_network_buffering = false;
return QueueOperation(op.Get());
}
IFACEMETHODIMP CGeometricMediaSource::Stop()
{
HRESULT hr = S_OK;
ComPtr<CSourceOperation> spStopOp;
spStopOp.Attach(new(std::nothrow) CSourceOperation(CSourceOperation::Operation_Stop));
if (!spStopOp)
{
hr = E_OUTOFMEMORY;
}
if (SUCCEEDED(hr))
{
// Queue asynchronous stop
hr = QueueOperation(spStopOp.Get());
}
return hr;
}
IFACEMETHODIMP CGeometricMediaSource::Start(
IMFPresentationDescriptor *pPresentationDescriptor,
const GUID *pguidTimeFormat,
const PROPVARIANT *pvarStartPos
)
{
HRESULT hr = S_OK;
// Check parameters.
// Start position and presentation descriptor cannot be nullptr.
if (pvarStartPos == nullptr || pPresentationDescriptor == nullptr)
{
return E_INVALIDARG;
}
// Check the time format.
if ((pguidTimeFormat != nullptr) && (*pguidTimeFormat != GUID_NULL))
{
// Unrecognized time format GUID.
return MF_E_UNSUPPORTED_TIME_FORMAT;
}
// Check the data type of the start position.
if (pvarStartPos->vt != VT_EMPTY && pvarStartPos->vt != VT_I8)
{
return MF_E_UNSUPPORTED_TIME_FORMAT;
}
AutoLock lock(_critSec);
ComPtr<CStartOperation> spStartOp;
if (_eSourceState != SourceState_Stopped &&
_eSourceState != SourceState_Started)
{
hr = MF_E_INVALIDREQUEST;
}
if (SUCCEEDED(hr))
{
// Check if the presentation description is valid.
hr = ValidatePresentationDescriptor(pPresentationDescriptor);
}
if (SUCCEEDED(hr))
{
// Prepare asynchronous operation attributes
spStartOp = new(std::nothrow) CStartOperation(pPresentationDescriptor);
if (!spStartOp)
{
hr = E_OUTOFMEMORY;
}
if (SUCCEEDED(hr))
{
hr = spStartOp->SetData(*pvarStartPos);
}
}
if (SUCCEEDED(hr))
{
// Queue asynchronous operation
hr = QueueOperation(spStartOp.Get());
}
return hr;
}
