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bearsoft |
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//------------------------------------------------------------------------------
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// File: DMOImpl.h
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//
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// Desc: Classes to implement a DMO.
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//
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// Copyright (c) 2000, Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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#ifndef _dmoimpl_h_
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#define _dmoimpl_h_
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#ifdef _DEBUG
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#include <crtdbg.h>
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#endif
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// Class to implement a DMO
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//
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//
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// Assumes the number of input and output streams is fixed
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// (these are template parameters)
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//
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// Provides following services:
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//
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// Basic parameter checking and locking
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// Fully implements :
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// GetStreamCount
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// SetInputType
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// SetOutputType
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// GetCurrentInputType
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// GetCurrentOutputType
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//
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// Checks if all types are set before streaming
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// Automatically calls AllocateStreamingResources before streaming
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// if it's not been called already
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// Prevents streaming until the types on all non-optional streams
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// have been set
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//
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//
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// Derived class implements the following methods :
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//
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/*
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HRESULT InternalGetInputStreamInfo(DWORD dwInputStreamIndex, DWORD *pdwFlags);
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HRESULT InternalGetOutputStreamInfo(DWORD dwOutputStreamIndex, DWORD *pdwFlags);
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HRESULT InternalCheckInputType(DWORD dwInputStreamIndex, const DMO_MEDIA_TYPE *pmt);
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HRESULT InternalCheckOutputType(DWORD dwOutputStreamIndex, const DMO_MEDIA_TYPE *pmt);
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HRESULT InternalGetInputType(DWORD dwInputStreamIndex, DWORD dwTypeIndex,
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DMO_MEDIA_TYPE *pmt);
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HRESULT InternalGetOutputType(DWORD dwOutputStreamIndex, DWORD dwTypeIndex,
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DMO_MEDIA_TYPE *pmt);
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HRESULT InternalGetInputSizeInfo(DWORD dwInputStreamIndex, DWORD *pcbSize,
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DWORD *pcbMaxLookahead, DWORD *pcbAlignment);
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HRESULT InternalGetOutputSizeInfo(DWORD dwOutputStreamIndex, DWORD *pcbSize,
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DWORD *pcbAlignment);
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HRESULT InternalGetInputMaxLatency(DWORD dwInputStreamIndex, REFERENCE_TIME *prtMaxLatency);
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HRESULT InternalSetInputMaxLatency(DWORD dwInputStreamIndex, REFERENCE_TIME rtMaxLatency);
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HRESULT InternalFlush();
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HRESULT InternalDiscontinuity(DWORD dwInputStreamIndex);
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HRESULT InternalAllocateStreamingResources();
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HRESULT InternalFreeStreamingResources();
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HRESULT InternalProcessInput(DWORD dwInputStreamIndex, IMediaBuffer *pBuffer,
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DWORD dwFlags, REFERENCE_TIME rtTimestamp,
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REFERENCE_TIME rtTimelength);
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HRESULT InternalProcessOutput(DWORD dwFlags, DWORD cOutputBufferCount,
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DMO_OUTPUT_DATA_BUFFER *pOutputBuffers,
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DWORD *pdwStatus);
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HRESULT InternalAcceptingInput(DWORD dwInputStreamIndex);
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void Lock();
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void Unlock();
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Notes:
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The derived class is meant to do most work to initialize streaming
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in AllocateStreamingResources rather than when types are set.
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This centralizes the work to one
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clear place based on the types set for all streams.
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The derived class implements locking.
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The derived class implements the IUnknown methods
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Usage example (1 input and 1 output) :
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class CMyDMO : public IMediaObjectImpl<CMyDmo, 1, 1>,
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...
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*/
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#define INTERNAL_CALL(_T_, _X_) \
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static_cast<_T_ *>(this)->Internal##_X_
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template <class _DERIVED_, int NUMBEROFINPUTS, int NUMBEROFOUTPUTS>
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class IMediaObjectImpl : public IMediaObject
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{
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private:
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// Member variables
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struct {
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DWORD fTypeSet:1;
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DWORD fIncomplete:1;
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DMO_MEDIA_TYPE CurrentMediaType;
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} m_InputInfo[NUMBEROFINPUTS], m_OutputInfo[NUMBEROFOUTPUTS];
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bool m_fTypesSet;
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bool m_fFlushed;
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bool m_fResourcesAllocated;
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protected:
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// Helpers
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bool InputTypeSet(DWORD ulInputStreamIndex) const
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{
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_ASSERTE(ulInputStreamIndex < NUMBEROFINPUTS);
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return 0 != m_InputInfo[ulInputStreamIndex].fTypeSet;
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}
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bool OutputTypeSet(DWORD ulOutputStreamIndex) const
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{
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_ASSERTE(ulOutputStreamIndex < NUMBEROFOUTPUTS);
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return 0 != m_OutputInfo[ulOutputStreamIndex].fTypeSet;
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}
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const DMO_MEDIA_TYPE *InputType(DWORD ulInputStreamIndex)
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{
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if (!InputTypeSet(ulInputStreamIndex)) {
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return NULL;
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}
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return &m_InputInfo[ulInputStreamIndex].CurrentMediaType;
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}
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const DMO_MEDIA_TYPE *OutputType(DWORD ulOutputStreamIndex)
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{
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if (!OutputTypeSet(ulOutputStreamIndex)) {
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return NULL;
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}
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return &m_OutputInfo[ulOutputStreamIndex].CurrentMediaType;
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}
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class LockIt
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{
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public:
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LockIt(_DERIVED_ *p) : m_p(p)
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{
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static_cast<_DERIVED_ *>(m_p)->Lock();
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}
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~LockIt()
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{
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static_cast<_DERIVED_ *>(m_p)->Unlock();
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}
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_DERIVED_ *const m_p;
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};
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bool CheckTypesSet()
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{
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m_fTypesSet = false;
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DWORD dw;
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for (dw = 0; dw < NUMBEROFINPUTS; dw++) {
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if (!InputTypeSet(dw)) {
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return false;
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}
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}
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for (dw = 0; dw < NUMBEROFOUTPUTS; dw++) {
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if (!OutputTypeSet(dw)) {
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// Check if it's optional
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DWORD dwFlags;
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#ifdef _DEBUG
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dwFlags = 0xFFFFFFFF;
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#endif
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INTERNAL_CALL(_DERIVED_, GetOutputStreamInfo)(dw, &dwFlags);
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_ASSERTE(0 == (dwFlags & ~(DMO_OUTPUT_STREAMF_WHOLE_SAMPLES |
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DMO_OUTPUT_STREAMF_SINGLE_SAMPLE_PER_BUFFER |
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DMO_OUTPUT_STREAMF_FIXED_SAMPLE_SIZE |
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DMO_OUTPUT_STREAMF_DISCARDABLE |
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DMO_OUTPUT_STREAMF_OPTIONAL)));
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if (!(dwFlags & DMO_OUTPUT_STREAMF_OPTIONAL)) {
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return false;
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}
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}
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}
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m_fTypesSet = true;
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return true;
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}
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IMediaObjectImpl() :
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m_fTypesSet(false),
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m_fFlushed(true),
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m_fResourcesAllocated(false)
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{
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ZeroMemory(&m_InputInfo, sizeof(m_InputInfo));
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ZeroMemory(&m_OutputInfo, sizeof(m_OutputInfo));
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}
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virtual ~IMediaObjectImpl() {
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DWORD dwCurrentType;
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for (dwCurrentType = 0; dwCurrentType < NUMBEROFINPUTS; dwCurrentType++) {
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if(InputTypeSet(dwCurrentType)) {
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MoFreeMediaType(&m_InputInfo[dwCurrentType].CurrentMediaType);
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}
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}
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for (dwCurrentType = 0; dwCurrentType < NUMBEROFOUTPUTS; dwCurrentType++) {
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if(OutputTypeSet(dwCurrentType)) {
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MoFreeMediaType(&m_OutputInfo[dwCurrentType].CurrentMediaType);
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}
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}
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}
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// IMediaObject methods
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//
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// IMediaObject methods
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//
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STDMETHODIMP GetStreamCount(unsigned long *pulNumberOfInputStreams, unsigned long *pulNumberOfOutputStreams)
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{
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LockIt lck(static_cast<_DERIVED_ *>(this));
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if (pulNumberOfInputStreams == NULL ||
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pulNumberOfOutputStreams == NULL) {
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return E_POINTER;
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}
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*pulNumberOfInputStreams = NUMBEROFINPUTS;
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*pulNumberOfOutputStreams = NUMBEROFOUTPUTS;
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return S_OK;
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}
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STDMETHODIMP GetInputStreamInfo(ULONG ulStreamIndex, DWORD *pdwFlags)
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{
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LockIt lck(static_cast<_DERIVED_ *>(this));
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if (ulStreamIndex >= NUMBEROFINPUTS) {
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return DMO_E_INVALIDSTREAMINDEX;
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}
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if (pdwFlags == NULL) {
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return E_POINTER;
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}
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HRESULT hr = INTERNAL_CALL(_DERIVED_, GetInputStreamInfo)(ulStreamIndex, pdwFlags);
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_ASSERTE(0 == (*pdwFlags & ~(DMO_INPUT_STREAMF_WHOLE_SAMPLES |
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DMO_INPUT_STREAMF_SINGLE_SAMPLE_PER_BUFFER |
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DMO_INPUT_STREAMF_FIXED_SAMPLE_SIZE |
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DMO_INPUT_STREAMF_HOLDS_BUFFERS)));
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return hr;
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}
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STDMETHODIMP GetOutputStreamInfo(ULONG ulStreamIndex, DWORD *pdwFlags)
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{
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LockIt lck(static_cast<_DERIVED_ *>(this));
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if (ulStreamIndex >= NUMBEROFOUTPUTS) {
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return DMO_E_INVALIDSTREAMINDEX;
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}
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if (pdwFlags == NULL) {
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return E_POINTER;
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}
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HRESULT hr = INTERNAL_CALL(_DERIVED_, GetOutputStreamInfo)(ulStreamIndex, pdwFlags);
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_ASSERTE(0 == (*pdwFlags & ~(DMO_OUTPUT_STREAMF_WHOLE_SAMPLES |
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DMO_OUTPUT_STREAMF_SINGLE_SAMPLE_PER_BUFFER |
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DMO_OUTPUT_STREAMF_FIXED_SAMPLE_SIZE |
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DMO_OUTPUT_STREAMF_DISCARDABLE |
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DMO_OUTPUT_STREAMF_OPTIONAL)));
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return hr;
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}
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STDMETHODIMP GetInputType(ULONG ulStreamIndex, ULONG ulTypeIndex, DMO_MEDIA_TYPE *pmt) {
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if (ulStreamIndex >= NUMBEROFINPUTS) {
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return DMO_E_INVALIDSTREAMINDEX;
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}
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LockIt lck(static_cast<_DERIVED_ *>(this));
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return INTERNAL_CALL(_DERIVED_, GetInputType)(ulStreamIndex, ulTypeIndex, pmt);
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}
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STDMETHODIMP GetOutputType(ULONG ulStreamIndex, ULONG ulTypeIndex, DMO_MEDIA_TYPE *pmt) {
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if (ulStreamIndex >= NUMBEROFOUTPUTS) {
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return DMO_E_INVALIDSTREAMINDEX;
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}
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LockIt lck(static_cast<_DERIVED_ *>(this));
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return INTERNAL_CALL(_DERIVED_, GetOutputType)(ulStreamIndex, ulTypeIndex, pmt);
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}
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STDMETHODIMP GetInputCurrentType(ULONG ulStreamIndex, DMO_MEDIA_TYPE *pmt) {
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if (ulStreamIndex >= NUMBEROFINPUTS) {
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return DMO_E_INVALIDSTREAMINDEX;
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}
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if (NULL == pmt) {
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return E_POINTER;
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}
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LockIt lck(static_cast<_DERIVED_ *>(this));
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if (InputTypeSet(ulStreamIndex))
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return MoCopyMediaType(pmt,
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&m_InputInfo[ulStreamIndex].CurrentMediaType);
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else
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return DMO_E_TYPE_NOT_SET;
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}
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STDMETHODIMP GetOutputCurrentType(ULONG ulStreamIndex, DMO_MEDIA_TYPE *pmt) {
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| 287 |
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if (ulStreamIndex >= NUMBEROFOUTPUTS) {
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return DMO_E_INVALIDSTREAMINDEX;
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}
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| 290 |
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if (NULL == pmt) {
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| 291 |
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return E_POINTER;
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| 292 |
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}
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| 293 |
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LockIt lck(static_cast<_DERIVED_ *>(this));
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| 294 |
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if (OutputTypeSet(ulStreamIndex))
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return MoCopyMediaType(pmt,
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| 296 |
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&m_OutputInfo[ulStreamIndex].CurrentMediaType);
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| 297 |
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else
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| 298 |
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return DMO_E_TYPE_NOT_SET;
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| 299 |
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}
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| 300 |
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STDMETHODIMP GetInputSizeInfo(ULONG ulStreamIndex, ULONG *pulSize, ULONG *pcbMaxLookahead, ULONG *pulAlignment) {
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| 301 |
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if (ulStreamIndex >= NUMBEROFINPUTS) {
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| 302 |
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return DMO_E_INVALIDSTREAMINDEX;
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| 303 |
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}
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| 304 |
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if (NULL == pulSize || NULL == pulAlignment ||
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| 305 |
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NULL == pcbMaxLookahead) {
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| 306 |
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return E_POINTER;
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| 307 |
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}
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| 308 |
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LockIt lck(static_cast<_DERIVED_ *>(this));
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| 309 |
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if (!InputTypeSet(ulStreamIndex)) {
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| 310 |
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return DMO_E_TYPE_NOT_SET;
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}
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| 312 |
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return INTERNAL_CALL(_DERIVED_, GetInputSizeInfo)(ulStreamIndex, pulSize, pcbMaxLookahead, pulAlignment);
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| 313 |
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}
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| 314 |
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STDMETHODIMP GetOutputSizeInfo(ULONG ulStreamIndex, ULONG *pulSize, ULONG *pulAlignment) {
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| 315 |
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if (ulStreamIndex >= NUMBEROFOUTPUTS) {
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| 316 |
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return DMO_E_INVALIDSTREAMINDEX;
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| 317 |
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}
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| 318 |
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if (NULL == pulSize || NULL == pulAlignment) {
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| 319 |
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return E_POINTER;
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| 320 |
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}
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| 321 |
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LockIt lck(static_cast<_DERIVED_ *>(this));
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| 322 |
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if (!m_fTypesSet || !OutputTypeSet(ulStreamIndex)) {
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| 323 |
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return DMO_E_TYPE_NOT_SET;
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| 324 |
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}
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| 325 |
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return INTERNAL_CALL(_DERIVED_, GetOutputSizeInfo)(ulStreamIndex, pulSize, pulAlignment);
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| 326 |
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}
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| 327 |
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STDMETHODIMP SetInputType(ULONG ulStreamIndex, const DMO_MEDIA_TYPE *pmt, DWORD dwFlags) {
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| 328 |
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if (ulStreamIndex >= NUMBEROFINPUTS) {
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| 329 |
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return DMO_E_INVALIDSTREAMINDEX;
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| 330 |
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}
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| 331 |
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if (dwFlags & ~ (DMO_SET_TYPEF_CLEAR | DMO_SET_TYPEF_TEST_ONLY)) {
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| 332 |
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return E_INVALIDARG;
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| 333 |
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}
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| 334 |
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|
| 335 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 336 |
|
|
|
| 337 |
|
|
if (dwFlags & DMO_SET_TYPEF_CLEAR) {
|
| 338 |
|
|
MoFreeMediaType(&m_InputInfo[ulStreamIndex].CurrentMediaType);
|
| 339 |
|
|
m_InputInfo[ulStreamIndex].fTypeSet = FALSE;
|
| 340 |
|
|
if (!CheckTypesSet()) {
|
| 341 |
|
|
Flush();
|
| 342 |
|
|
FreeStreamingResources();
|
| 343 |
|
|
}
|
| 344 |
|
|
return NOERROR;
|
| 345 |
|
|
}
|
| 346 |
|
|
if (NULL == pmt) {
|
| 347 |
|
|
return E_POINTER;
|
| 348 |
|
|
}
|
| 349 |
|
|
HRESULT hr = INTERNAL_CALL(_DERIVED_, CheckInputType)(ulStreamIndex, pmt);
|
| 350 |
|
|
if (FAILED(hr))
|
| 351 |
|
|
return hr;
|
| 352 |
|
|
|
| 353 |
|
|
if (dwFlags & DMO_SET_TYPEF_TEST_ONLY) {
|
| 354 |
|
|
return NOERROR;
|
| 355 |
|
|
}
|
| 356 |
|
|
|
| 357 |
|
|
|
| 358 |
|
|
// actually set the type
|
| 359 |
|
|
DMO_MEDIA_TYPE mtTemp;
|
| 360 |
|
|
if (S_OK == MoCopyMediaType(&mtTemp, pmt)) {
|
| 361 |
|
|
// Free any previous mediatype
|
| 362 |
|
|
if (InputTypeSet(ulStreamIndex)) {
|
| 363 |
|
|
MoFreeMediaType(&m_InputInfo[ulStreamIndex].CurrentMediaType);
|
| 364 |
|
|
}
|
| 365 |
|
|
m_InputInfo[ulStreamIndex].CurrentMediaType = mtTemp;
|
| 366 |
|
|
m_InputInfo[ulStreamIndex].fTypeSet = TRUE;
|
| 367 |
|
|
CheckTypesSet();
|
| 368 |
|
|
} else {
|
| 369 |
|
|
return E_OUTOFMEMORY;
|
| 370 |
|
|
}
|
| 371 |
|
|
|
| 372 |
|
|
return NOERROR;
|
| 373 |
|
|
}
|
| 374 |
|
|
|
| 375 |
|
|
STDMETHODIMP SetOutputType(ULONG ulStreamIndex, const DMO_MEDIA_TYPE *pmt, DWORD dwFlags) {
|
| 376 |
|
|
if (ulStreamIndex >= NUMBEROFOUTPUTS) {
|
| 377 |
|
|
return DMO_E_INVALIDSTREAMINDEX;
|
| 378 |
|
|
}
|
| 379 |
|
|
if (dwFlags & ~ (DMO_SET_TYPEF_CLEAR | DMO_SET_TYPEF_TEST_ONLY)) {
|
| 380 |
|
|
return E_INVALIDARG;
|
| 381 |
|
|
}
|
| 382 |
|
|
|
| 383 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 384 |
|
|
|
| 385 |
|
|
if (dwFlags & DMO_SET_TYPEF_CLEAR) {
|
| 386 |
|
|
MoFreeMediaType(&m_OutputInfo[ulStreamIndex].CurrentMediaType);
|
| 387 |
|
|
m_OutputInfo[ulStreamIndex].fTypeSet = FALSE;
|
| 388 |
|
|
if (!CheckTypesSet()) {
|
| 389 |
|
|
Flush();
|
| 390 |
|
|
FreeStreamingResources();
|
| 391 |
|
|
}
|
| 392 |
|
|
return NOERROR;
|
| 393 |
|
|
}
|
| 394 |
|
|
if (NULL == pmt) {
|
| 395 |
|
|
return E_POINTER;
|
| 396 |
|
|
}
|
| 397 |
|
|
HRESULT hr = INTERNAL_CALL(_DERIVED_, CheckOutputType)(ulStreamIndex, pmt);
|
| 398 |
|
|
if (FAILED(hr)) {
|
| 399 |
|
|
return hr;
|
| 400 |
|
|
}
|
| 401 |
|
|
|
| 402 |
|
|
if (dwFlags & DMO_SET_TYPEF_TEST_ONLY) {
|
| 403 |
|
|
return NOERROR;
|
| 404 |
|
|
}
|
| 405 |
|
|
|
| 406 |
|
|
|
| 407 |
|
|
// actually set the type
|
| 408 |
|
|
DMO_MEDIA_TYPE mtTemp;
|
| 409 |
|
|
if (S_OK == MoCopyMediaType(&mtTemp, pmt)) {
|
| 410 |
|
|
// Free any previous mediatype
|
| 411 |
|
|
if (OutputTypeSet(ulStreamIndex)) {
|
| 412 |
|
|
MoFreeMediaType(&m_OutputInfo[ulStreamIndex].CurrentMediaType);
|
| 413 |
|
|
}
|
| 414 |
|
|
m_OutputInfo[ulStreamIndex].CurrentMediaType = mtTemp;
|
| 415 |
|
|
m_OutputInfo[ulStreamIndex].fTypeSet = TRUE;
|
| 416 |
|
|
CheckTypesSet();
|
| 417 |
|
|
} else {
|
| 418 |
|
|
return E_OUTOFMEMORY;
|
| 419 |
|
|
}
|
| 420 |
|
|
|
| 421 |
|
|
return NOERROR;
|
| 422 |
|
|
}
|
| 423 |
|
|
STDMETHODIMP GetInputStatus(
|
| 424 |
|
|
ULONG ulStreamIndex,
|
| 425 |
|
|
DWORD *pdwStatus
|
| 426 |
|
|
) {
|
| 427 |
|
|
if (ulStreamIndex >= NUMBEROFINPUTS) {
|
| 428 |
|
|
return DMO_E_INVALIDSTREAMINDEX;
|
| 429 |
|
|
}
|
| 430 |
|
|
if (NULL == pdwStatus) {
|
| 431 |
|
|
return E_POINTER;
|
| 432 |
|
|
}
|
| 433 |
|
|
*pdwStatus = 0;
|
| 434 |
|
|
|
| 435 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 436 |
|
|
|
| 437 |
|
|
if (!m_fTypesSet) {
|
| 438 |
|
|
return DMO_E_TYPE_NOT_SET;
|
| 439 |
|
|
}
|
| 440 |
|
|
|
| 441 |
|
|
if (INTERNAL_CALL(_DERIVED_, AcceptingInput)(ulStreamIndex) == S_OK) {
|
| 442 |
|
|
*pdwStatus |= DMO_INPUT_STATUSF_ACCEPT_DATA;
|
| 443 |
|
|
}
|
| 444 |
|
|
return NOERROR;
|
| 445 |
|
|
}
|
| 446 |
|
|
STDMETHODIMP GetInputMaxLatency(unsigned long ulStreamIndex, REFERENCE_TIME *prtLatency) {
|
| 447 |
|
|
|
| 448 |
|
|
if (prtLatency == NULL) {
|
| 449 |
|
|
return E_POINTER;
|
| 450 |
|
|
}
|
| 451 |
|
|
if (ulStreamIndex >= NUMBEROFINPUTS) {
|
| 452 |
|
|
return DMO_E_INVALIDSTREAMINDEX;
|
| 453 |
|
|
}
|
| 454 |
|
|
|
| 455 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 456 |
|
|
|
| 457 |
|
|
return INTERNAL_CALL(_DERIVED_, GetInputMaxLatency)(ulStreamIndex, prtLatency);
|
| 458 |
|
|
}
|
| 459 |
|
|
STDMETHODIMP SetInputMaxLatency(unsigned long ulStreamIndex, REFERENCE_TIME rtLatency) {
|
| 460 |
|
|
if (ulStreamIndex >= NUMBEROFINPUTS) {
|
| 461 |
|
|
return DMO_E_INVALIDSTREAMINDEX;
|
| 462 |
|
|
}
|
| 463 |
|
|
|
| 464 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 465 |
|
|
|
| 466 |
|
|
return INTERNAL_CALL(_DERIVED_, SetInputMaxLatency)(ulStreamIndex, rtLatency);
|
| 467 |
|
|
}
|
| 468 |
|
|
STDMETHODIMP Discontinuity(ULONG ulStreamIndex) {
|
| 469 |
|
|
if (ulStreamIndex >= NUMBEROFINPUTS) {
|
| 470 |
|
|
return DMO_E_INVALIDSTREAMINDEX;
|
| 471 |
|
|
}
|
| 472 |
|
|
|
| 473 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 474 |
|
|
|
| 475 |
|
|
if (!m_fTypesSet) {
|
| 476 |
|
|
return DMO_E_TYPE_NOT_SET;
|
| 477 |
|
|
}
|
| 478 |
|
|
|
| 479 |
|
|
if (S_OK != INTERNAL_CALL(_DERIVED_, AcceptingInput)(ulStreamIndex)) {
|
| 480 |
|
|
return DMO_E_NOTACCEPTING;
|
| 481 |
|
|
}
|
| 482 |
|
|
|
| 483 |
|
|
return INTERNAL_CALL(_DERIVED_, Discontinuity)(ulStreamIndex);
|
| 484 |
|
|
}
|
| 485 |
|
|
|
| 486 |
|
|
STDMETHODIMP Flush()
|
| 487 |
|
|
{
|
| 488 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 489 |
|
|
|
| 490 |
|
|
if (!m_fTypesSet) {
|
| 491 |
|
|
return S_OK;
|
| 492 |
|
|
}
|
| 493 |
|
|
if (m_fFlushed) {
|
| 494 |
|
|
return S_OK;
|
| 495 |
|
|
}
|
| 496 |
|
|
HRESULT hr = INTERNAL_CALL(_DERIVED_, Flush)();
|
| 497 |
|
|
m_fFlushed = true;
|
| 498 |
|
|
return hr;
|
| 499 |
|
|
}
|
| 500 |
|
|
|
| 501 |
|
|
STDMETHODIMP AllocateStreamingResources() {
|
| 502 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 503 |
|
|
if (!m_fTypesSet) {
|
| 504 |
|
|
return DMO_E_TYPE_NOT_SET;
|
| 505 |
|
|
}
|
| 506 |
|
|
if (m_fResourcesAllocated) {
|
| 507 |
|
|
return S_OK;
|
| 508 |
|
|
}
|
| 509 |
|
|
HRESULT hr = INTERNAL_CALL(_DERIVED_, AllocateStreamingResources)();
|
| 510 |
|
|
if (SUCCEEDED(hr)) {
|
| 511 |
|
|
m_fResourcesAllocated = true;
|
| 512 |
|
|
}
|
| 513 |
|
|
return hr;
|
| 514 |
|
|
}
|
| 515 |
|
|
STDMETHODIMP FreeStreamingResources()
|
| 516 |
|
|
{
|
| 517 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 518 |
|
|
if (m_fResourcesAllocated) {
|
| 519 |
|
|
m_fResourcesAllocated = false;
|
| 520 |
|
|
INTERNAL_CALL(_DERIVED_, Flush)();
|
| 521 |
|
|
return INTERNAL_CALL(_DERIVED_, FreeStreamingResources)();
|
| 522 |
|
|
}
|
| 523 |
|
|
return S_OK;
|
| 524 |
|
|
}
|
| 525 |
|
|
|
| 526 |
|
|
//
|
| 527 |
|
|
// Processing methods - public entry points
|
| 528 |
|
|
//
|
| 529 |
|
|
STDMETHODIMP ProcessInput(
|
| 530 |
|
|
DWORD ulStreamIndex,
|
| 531 |
|
|
IMediaBuffer *pBuffer, // [in], must not be NULL
|
| 532 |
|
|
DWORD dwFlags, // [in] - discontinuity, timestamp, etc.
|
| 533 |
|
|
REFERENCE_TIME rtTimestamp, // [in], valid if flag set
|
| 534 |
|
|
REFERENCE_TIME rtTimelength // [in], valid if flag set
|
| 535 |
|
|
) {
|
| 536 |
|
|
if (!pBuffer) {
|
| 537 |
|
|
return E_POINTER;
|
| 538 |
|
|
}
|
| 539 |
|
|
if (ulStreamIndex >= NUMBEROFINPUTS) {
|
| 540 |
|
|
return DMO_E_INVALIDSTREAMINDEX;
|
| 541 |
|
|
}
|
| 542 |
|
|
if (dwFlags & ~(DMO_INPUT_DATA_BUFFERF_SYNCPOINT |
|
| 543 |
|
|
DMO_INPUT_DATA_BUFFERF_TIME |
|
| 544 |
|
|
DMO_INPUT_DATA_BUFFERF_TIMELENGTH)) {
|
| 545 |
|
|
return E_INVALIDARG;
|
| 546 |
|
|
}
|
| 547 |
|
|
|
| 548 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 549 |
|
|
|
| 550 |
|
|
// Make sure all streams have media types set and resources are allocated
|
| 551 |
|
|
HRESULT hr = AllocateStreamingResources();
|
| 552 |
|
|
if (FAILED(hr)) {
|
| 553 |
|
|
return hr;
|
| 554 |
|
|
}
|
| 555 |
|
|
if (INTERNAL_CALL(_DERIVED_, AcceptingInput)(ulStreamIndex) != S_OK) {
|
| 556 |
|
|
return DMO_E_NOTACCEPTING;
|
| 557 |
|
|
}
|
| 558 |
|
|
|
| 559 |
|
|
m_fFlushed = false;
|
| 560 |
|
|
|
| 561 |
|
|
return INTERNAL_CALL(_DERIVED_, ProcessInput)(
|
| 562 |
|
|
ulStreamIndex,
|
| 563 |
|
|
pBuffer,
|
| 564 |
|
|
dwFlags,
|
| 565 |
|
|
rtTimestamp,
|
| 566 |
|
|
rtTimelength);
|
| 567 |
|
|
}
|
| 568 |
|
|
|
| 569 |
|
|
STDMETHODIMP ProcessOutput(
|
| 570 |
|
|
DWORD dwFlags,
|
| 571 |
|
|
DWORD ulOutputBufferCount,
|
| 572 |
|
|
DMO_OUTPUT_DATA_BUFFER *pOutputBuffers,
|
| 573 |
|
|
DWORD *pdwStatus)
|
| 574 |
|
|
{
|
| 575 |
|
|
if (pdwStatus == NULL) {
|
| 576 |
|
|
return E_POINTER;
|
| 577 |
|
|
}
|
| 578 |
|
|
|
| 579 |
|
|
|
| 580 |
|
|
if (ulOutputBufferCount != NUMBEROFOUTPUTS || (dwFlags & ~DMO_PROCESS_OUTPUT_DISCARD_WHEN_NO_BUFFER)) {
|
| 581 |
|
|
return E_INVALIDARG;
|
| 582 |
|
|
}
|
| 583 |
|
|
|
| 584 |
|
|
if (NUMBEROFOUTPUTS != 0 && pOutputBuffers == NULL) {
|
| 585 |
|
|
return E_POINTER;
|
| 586 |
|
|
}
|
| 587 |
|
|
|
| 588 |
|
|
*pdwStatus = 0;
|
| 589 |
|
|
|
| 590 |
|
|
LockIt lck(static_cast<_DERIVED_ *>(this));
|
| 591 |
|
|
|
| 592 |
|
|
HRESULT hr = AllocateStreamingResources();
|
| 593 |
|
|
if (FAILED(hr)) {
|
| 594 |
|
|
return hr;
|
| 595 |
|
|
}
|
| 596 |
|
|
|
| 597 |
|
|
for (DWORD dw = 0; dw < NUMBEROFOUTPUTS; dw++) {
|
| 598 |
|
|
pOutputBuffers[dw].dwStatus = 0;
|
| 599 |
|
|
}
|
| 600 |
|
|
|
| 601 |
|
|
hr = INTERNAL_CALL(_DERIVED_, ProcessOutput)(
|
| 602 |
|
|
dwFlags,
|
| 603 |
|
|
ulOutputBufferCount,
|
| 604 |
|
|
pOutputBuffers,
|
| 605 |
|
|
pdwStatus);
|
| 606 |
|
|
|
| 607 |
|
|
// remember the DMO's incomplete status
|
| 608 |
|
|
for (dw = 0; dw < NUMBEROFOUTPUTS; dw++) {
|
| 609 |
|
|
if (pOutputBuffers[dw].dwStatus & DMO_OUTPUT_DATA_BUFFERF_INCOMPLETE) {
|
| 610 |
|
|
m_OutputInfo[dw].fIncomplete = TRUE;
|
| 611 |
|
|
} else {
|
| 612 |
|
|
m_OutputInfo[dw].fIncomplete = FALSE;
|
| 613 |
|
|
}
|
| 614 |
|
|
}
|
| 615 |
|
|
|
| 616 |
|
|
return hr;
|
| 617 |
|
|
}
|
| 618 |
|
|
|
| 619 |
|
|
STDMETHODIMP DMOLock(LONG lLock)
|
| 620 |
|
|
{
|
| 621 |
|
|
if (lLock) {
|
| 622 |
|
|
static_cast<_DERIVED_ *>(this)->Lock();
|
| 623 |
|
|
} else {
|
| 624 |
|
|
static_cast<_DERIVED_ *>(this)->Unlock();
|
| 625 |
|
|
}
|
| 626 |
|
|
return S_OK;
|
| 627 |
|
|
}
|
| 628 |
|
|
};
|
| 629 |
|
|
|
| 630 |
|
|
#endif // _dmoimpl_h_
|
| 631 |
|
|
|
Parent Directory
| 
Revision Log