/* * IPin function declarations to allow inheritance * * Copyright 2003 Robert Shearman * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ /* This function will process incoming samples to the pin. * Any return value valid in IMemInputPin::Receive is allowed here * * Cookie is the cookie that was set when requesting the buffer, if you don't * implement custom requesting, you can safely ignore this */ typedef HRESULT (* SAMPLEPROC_PUSH)(LPVOID userdata, IMediaSample * pSample); typedef HRESULT (* SAMPLEPROC_PULL)(LPVOID userdata, IMediaSample * pSample, DWORD_PTR cookie); /* This function will determine whether a type is supported or not. * It is allowed to return any error value (within reason), as opposed * to IPin::QueryAccept which is only allowed to return S_OK or S_FALSE. */ typedef HRESULT (* QUERYACCEPTPROC)(LPVOID userdata, const AM_MEDIA_TYPE * pmt); /* This function is called prior to finalizing a connection with * another pin and can be used to get things from the other pin * like IMemInput interfaces. * * props contains some defaults, but you can safely override them to your liking */ typedef HRESULT (* PRECONNECTPROC)(IPin * iface, IPin * pConnectPin, ALLOCATOR_PROPERTIES *props); /* This function is called whenever a cleanup operation has to occur, * this is usually after a flush, seek, or end of stream notification. * This code may even be repeated multiple times, so build your code to * tolerate this behavior. Return value is ignored and should be S_OK. */ typedef HRESULT (* CLEANUPPROC) (LPVOID userdata); /* This function is called whenever a request for a new sample is made, * If you implement it (it can be NULL for default behavior), you have to * call IMemAllocator_GetBuffer and IMemAllocator_RequestBuffer * This is useful if you want to request more than 1 buffer at simultaneously * * This will also cause the Sample Proc to be called with empty buffers to indicate * failure in retrieving the sample. */ typedef HRESULT (* REQUESTPROC) (LPVOID userdata); /* This function is called after processing is done (for whatever reason that is caused) * This is useful if you create processing threads that need to die */ typedef HRESULT (* STOPPROCESSPROC) (LPVOID userdata); #define ALIGNDOWN(value,boundary) ((value)/(boundary)*(boundary)) #define ALIGNUP(value,boundary) (ALIGNDOWN((value)+(boundary)-1, (boundary))) typedef struct IPinImpl { const struct IPinVtbl * lpVtbl; LONG refCount; LPCRITICAL_SECTION pCritSec; PIN_INFO pinInfo; IPin * pConnectedTo; AM_MEDIA_TYPE mtCurrent; QUERYACCEPTPROC fnQueryAccept; LPVOID pUserData; } IPinImpl; typedef struct InputPin { /* inheritance C style! */ IPinImpl pin; const IMemInputPinVtbl * lpVtblMemInput; IMemAllocator * pAllocator; SAMPLEPROC_PUSH fnSampleProc; CLEANUPPROC fnCleanProc; REFERENCE_TIME tStart; REFERENCE_TIME tStop; double dRate; BOOL flushing, end_of_stream; IMemAllocator *preferred_allocator; } InputPin; typedef struct OutputPin { /* inheritance C style! */ IPinImpl pin; IMemInputPin * pMemInputPin; HRESULT (* pConnectSpecific)(IPin * iface, IPin * pReceiver, const AM_MEDIA_TYPE * pmt); BOOL custom_allocator; IMemAllocator *alloc; BOOL readonly; ALLOCATOR_PROPERTIES allocProps; } OutputPin; typedef struct PullPin { /* inheritance C style! */ IPinImpl pin; REFERENCE_TIME rtStart, rtCurrent, rtNext, rtStop; IAsyncReader * pReader; IMemAllocator * pAlloc; SAMPLEPROC_PULL fnSampleProc; PRECONNECTPROC fnPreConnect; REQUESTPROC fnCustomRequest; CLEANUPPROC fnCleanProc; STOPPROCESSPROC fnDone; double dRate; BOOL stop_playback; DWORD cbAlign; /* Any code that touches the thread must hold the thread lock, * lock order: thread_lock and then the filter critical section * also signal thread_sleepy so the thread knows to wake up */ CRITICAL_SECTION thread_lock; HANDLE hThread; DWORD requested_state; HANDLE hEventStateChanged, thread_sleepy; DWORD state; } PullPin; #define Req_Sleepy 0 #define Req_Die 1 #define Req_Run 2 #define Req_Pause 3 /*** Constructors ***/ HRESULT InputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo, SAMPLEPROC_PUSH pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, CLEANUPPROC pCleanUp, LPCRITICAL_SECTION pCritSec, IMemAllocator *, IPin ** ppPin); HRESULT OutputPin_Construct(const IPinVtbl *OutputPin_Vtbl, LONG outputpin_size, const PIN_INFO * pPinInfo, ALLOCATOR_PROPERTIES *props, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, IPin ** ppPin); HRESULT PullPin_Construct(const IPinVtbl *PullPin_Vtbl, const PIN_INFO * pPinInfo, SAMPLEPROC_PULL pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, CLEANUPPROC pCleanUp, STOPPROCESSPROC, REQUESTPROC pCustomRequest, LPCRITICAL_SECTION pCritSec, IPin ** ppPin); /**************************/ /*** Pin Implementation ***/ /* Common */ ULONG WINAPI IPinImpl_AddRef(IPin * iface); HRESULT WINAPI IPinImpl_Disconnect(IPin * iface); HRESULT WINAPI IPinImpl_ConnectedTo(IPin * iface, IPin ** ppPin); HRESULT WINAPI IPinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt); HRESULT WINAPI IPinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo); HRESULT WINAPI IPinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir); HRESULT WINAPI IPinImpl_QueryId(IPin * iface, LPWSTR * Id); HRESULT WINAPI IPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI IPinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum); HRESULT WINAPI IPinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin); /* Input Pin */ HRESULT WINAPI InputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv); ULONG WINAPI InputPin_Release(IPin * iface); HRESULT WINAPI InputPin_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI InputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI InputPin_EndOfStream(IPin * iface); HRESULT WINAPI InputPin_BeginFlush(IPin * iface); HRESULT WINAPI InputPin_EndFlush(IPin * iface); HRESULT WINAPI InputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate); /* Output Pin */ HRESULT WINAPI OutputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv); ULONG WINAPI OutputPin_Release(IPin * iface); HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI OutputPin_Disconnect(IPin * iface); HRESULT WINAPI OutputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI OutputPin_EndOfStream(IPin * iface); HRESULT WINAPI OutputPin_BeginFlush(IPin * iface); HRESULT WINAPI OutputPin_EndFlush(IPin * iface); HRESULT WINAPI OutputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate); HRESULT OutputPin_CommitAllocator(OutputPin * This); HRESULT OutputPin_DecommitAllocator(OutputPin * This); HRESULT OutputPin_GetDeliveryBuffer(OutputPin * This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags); HRESULT OutputPin_SendSample(OutputPin * This, IMediaSample * pSample); HRESULT OutputPin_DeliverDisconnect(OutputPin * This); /* Pull Pin */ HRESULT WINAPI PullPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt); HRESULT WINAPI PullPin_Disconnect(IPin * iface); HRESULT WINAPI PullPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv); ULONG WINAPI PullPin_Release(IPin * iface); HRESULT WINAPI PullPin_EndOfStream(IPin * iface); HRESULT WINAPI PullPin_BeginFlush(IPin * iface); HRESULT WINAPI PullPin_EndFlush(IPin * iface); HRESULT WINAPI PullPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate); /* Thread interaction functions: Hold the thread_lock before calling them */ HRESULT PullPin_StartProcessing(PullPin * This); HRESULT PullPin_PauseProcessing(PullPin * This); HRESULT PullPin_WaitForStateChange(PullPin * This, DWORD dwMilliseconds);