diff options
Diffstat (limited to 'loader/dshow/interfaces.h')
| -rw-r--r-- | loader/dshow/interfaces.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/loader/dshow/interfaces.h b/loader/dshow/interfaces.h index ab5069d854..23b02a5090 100644 --- a/loader/dshow/interfaces.h +++ b/loader/dshow/interfaces.h @@ -84,13 +84,17 @@ typedef struct IEnumPins_vt { INHERIT_IUNKNOWN(); + // retrieves a specified number of pins in the enumeration sequence.. HRESULT STDCALL ( *Next )(IEnumPins* This, /* [in] */ unsigned long cPins, /* [size_is][out] */ IPin** ppPins, /* [out] */ unsigned long* pcFetched); + // skips over a specified number of pins. HRESULT STDCALL ( *Skip )(IEnumPins* This, /* [in] */ unsigned long cPins); + // resets the enumeration sequence to the beginning. HRESULT STDCALL ( *Reset )(IEnumPins* This); + // makes a copy of the enumerator with the same enumeration state. HRESULT STDCALL ( *Clone )(IEnumPins* This, /* [out] */ IEnumPins** ppEnum); } IEnumPins_vt; @@ -111,25 +115,46 @@ typedef struct IMediaSample_vt HRESULT STDCALL ( *SetTime )(IMediaSample* This, /* [in] */ REFERENCE_TIME* pTimeStart, /* [in] */ REFERENCE_TIME* pTimeEnd); + + // sync-point property. If true, then the beginning of this + // sample is a sync-point. (note that if AM_MEDIA_TYPE.bTemporalCompression + // is false then all samples are sync points). A filter can start + // a stream at any sync point. S_FALSE if not sync-point, S_OK if true. HRESULT STDCALL ( *IsSyncPoint )(IMediaSample* This); HRESULT STDCALL ( *SetSyncPoint )(IMediaSample* This, long bIsSyncPoint); + + // preroll property. If true, this sample is for preroll only and + // shouldn't be displayed. HRESULT STDCALL ( *IsPreroll )(IMediaSample* This); HRESULT STDCALL ( *SetPreroll )(IMediaSample* This, long bIsPreroll); + LONG STDCALL ( *GetActualDataLength )(IMediaSample* This); HRESULT STDCALL ( *SetActualDataLength )(IMediaSample* This, long __MIDL_0010); + + // these allow for limited format changes in band - if no format change + // has been made when you receive a sample GetMediaType will return S_FALSE HRESULT STDCALL ( *GetMediaType )(IMediaSample* This, AM_MEDIA_TYPE** ppMediaType); HRESULT STDCALL ( *SetMediaType )(IMediaSample* This, AM_MEDIA_TYPE* pMediaType); + + // returns S_OK if there is a discontinuity in the data (this frame is + // not a continuation of the previous stream of data + // - there has been a seek or some dropped samples). HRESULT STDCALL ( *IsDiscontinuity )(IMediaSample* This); HRESULT STDCALL ( *SetDiscontinuity )(IMediaSample* This, long bDiscontinuity); + + // get the media times for this sample HRESULT STDCALL ( *GetMediaTime )(IMediaSample* This, /* [out] */ long long* pTimeStart, /* [out] */ long long* pTimeEnd); + // Set the media times for this sample + // pTimeStart==pTimeEnd==NULL will invalidate the media time stamps in + // this sample HRESULT STDCALL ( *SetMediaTime )(IMediaSample* This, /* [in] */ long long* pTimeStart, /* [in] */ long long* pTimeEnd); @@ -180,18 +205,24 @@ typedef struct IMemAllocator_vt { INHERIT_IUNKNOWN(); + // specifies the number of buffers to allocate and the size of each buffer. HRESULT STDCALL ( *SetProperties )(IMemAllocator* This, /* [in] */ ALLOCATOR_PROPERTIES *pRequest, /* [out] */ ALLOCATOR_PROPERTIES *pActual); + // retrieves the number of buffers that the allocator will create, and the buffer properties. HRESULT STDCALL ( *GetProperties )(IMemAllocator* This, /* [out] */ ALLOCATOR_PROPERTIES *pProps); + // allocates the buffer memory. HRESULT STDCALL ( *Commit )(IMemAllocator* This); + // releases the memory for the buffers. HRESULT STDCALL ( *Decommit )(IMemAllocator* This); + // retrieves a media sample that contains an empty buffer. HRESULT STDCALL ( *GetBuffer )(IMemAllocator* This, /* [out] */ IMediaSample** ppBuffer, /* [in] */ REFERENCE_TIME* pStartTime, /* [in] */ REFERENCE_TIME* pEndTime, /* [in] */ unsigned long dwFlags); + // releases a media sample. HRESULT STDCALL ( *ReleaseBuffer )(IMemAllocator* This, /* [in] */ IMediaSample* pBuffer); } IMemAllocator_vt; |