dlls/qcap/pin.c

   1 /*
   2  * Generic Implementation of IPin Interface
   3  *
   4  * Copyright 2003 Robert Shearman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <stdarg.h>
  22
  23 #define COBJMACROS
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wtypes.h"
  28 #include "wingdi.h"
  29 #include "winuser.h"
  30 #include "dshow.h"
  31
  32 #include "qcap_main.h"
  33 #include "pin.h"
  34
  35 #include "wine/debug.h"
  36 #include "wine/unicode.h"
  37 #include "uuids.h"
  38 #include "vfwmsgs.h"
  39 #include <assert.h>
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(qcap);
  42
  43 #define ALIGNDOWN(value,boundary) ((value) & ~(boundary-1))
  44 #define ALIGNUP(value,boundary) (ALIGNDOWN(value - 1, boundary) + boundary)
  45
  46 static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
  47 {
  48     /* Tempting to just do a memcpy, but the name field is
  49        128 characters long! We will probably never exceed 10
  50        most of the time, so we are better off copying
  51        each field manually */
  52     strcpyW(pDest->achName, pSrc->achName);
  53     pDest->dir = pSrc->dir;
  54     pDest->pFilter = pSrc->pFilter;
  55 }
  56
  57 HRESULT WINAPI IPinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
  58 {
  59     HRESULT hr;
  60     IPinImpl *This = (IPinImpl *)iface;
  61
  62 /*  TRACE("(%p)\n", ppPin);*/
  63
  64     EnterCriticalSection(This->pCritSec);
  65     {
  66         if (This->pConnectedTo)
  67         {
  68             *ppPin = This->pConnectedTo;
  69             IPin_AddRef(*ppPin);
  70             hr = S_OK;
  71         }
  72         else
  73             hr = VFW_E_NOT_CONNECTED;
  74     }
  75     LeaveCriticalSection(This->pCritSec);
  76
  77     return hr;
  78 }
  79
  80 HRESULT WINAPI IPinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
  81 {
  82     HRESULT hr;
  83     IPinImpl *This = (IPinImpl *)iface;
  84
  85     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
  86
  87     EnterCriticalSection(This->pCritSec);
  88     {
  89         if (This->pConnectedTo)
  90         {
  91             CopyMediaType(pmt, &This->mtCurrent);
  92             hr = S_OK;
  93         }
  94         else
  95         {
  96             ZeroMemory(pmt, sizeof(*pmt));
  97             hr = VFW_E_NOT_CONNECTED;
  98         }
  99     }
 100     LeaveCriticalSection(This->pCritSec);
 101
 102     return hr;
 103 }
 104
 105 HRESULT WINAPI IPinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
 106 {
 107     IPinImpl *This = (IPinImpl *)iface;
 108
 109     TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
 110
 111     Copy_PinInfo(pInfo, &This->pinInfo);
 112     IBaseFilter_AddRef(pInfo->pFilter);
 113
 114     return S_OK;
 115 }
 116
 117 HRESULT WINAPI IPinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
 118 {
 119     IPinImpl *This = (IPinImpl *)iface;
 120
 121     TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir);
 122
 123     *pPinDir = This->pinInfo.dir;
 124
 125     return S_OK;
 126 }
 127
 128 HRESULT WINAPI IPinImpl_QueryId(IPin * iface, LPWSTR * Id)
 129 {
 130     IPinImpl *This = (IPinImpl *)iface;
 131
 132     TRACE("(%p/%p)->(%p)\n", This, iface, Id);
 133
 134     *Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
 135     if (!Id)
 136         return E_OUTOFMEMORY;
 137
 138     strcpyW(*Id, This->pinInfo.achName);
 139
 140     return S_OK;
 141 }
 142
 143 HRESULT WINAPI IPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 144 {
 145     IPinImpl *This = (IPinImpl *)iface;
 146
 147     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 148
 149     if (!This->fnQueryAccept) return S_OK;
 150
 151     return (This->fnQueryAccept(This->pUserData, pmt) == S_OK ? S_OK : S_FALSE);
 152 }
 153
 154 HRESULT WINAPI IPinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
 155 {
 156     IPinImpl *This = (IPinImpl *)iface;
 157
 158     TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin);
 159
 160     return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
 161 }
 162
 163 /* Function called as a helper to IPin_Connect */
 164 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 165 /* NOTE: not part of standard interface */
 166 static HRESULT OutputPin_ConnectSpecific(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 167 {
 168     OutputPin *This = (OutputPin *)iface;
 169     HRESULT hr;
 170     IMemAllocator * pMemAlloc = NULL;
 171     ALLOCATOR_PROPERTIES actual; /* FIXME: should we put the actual props back in to This? */
 172
 173     TRACE("(%p, %p)\n", pReceivePin, pmt);
 174     dump_AM_MEDIA_TYPE(pmt);
 175
 176     /* FIXME: call queryacceptproc */
 177
 178     This->pin.pConnectedTo = pReceivePin;
 179     IPin_AddRef(pReceivePin);
 180     CopyMediaType(&This->pin.mtCurrent, pmt);
 181
 182     hr = IPin_ReceiveConnection(pReceivePin, iface, pmt);
 183
 184     /* get the IMemInputPin interface we will use to deliver samples to the
 185      * connected pin */
 186     if (SUCCEEDED(hr))
 187     {
 188         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
 189
 190         if (SUCCEEDED(hr))
 191             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pMemAlloc);
 192
 193         if (hr == VFW_E_NO_ALLOCATOR)
 194         {
 195             /* Input pin provides no allocator, use standard memory allocator */
 196             hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)&pMemAlloc);
 197
 198             if (SUCCEEDED(hr))
 199             {
 200                 hr = IMemInputPin_NotifyAllocator(This->pMemInputPin, pMemAlloc, FALSE);
 201             }
 202         }
 203
 204         if (SUCCEEDED(hr))
 205             hr = IMemAllocator_SetProperties(pMemAlloc, &This->allocProps, &actual);
 206
 207         if (pMemAlloc)
 208             IMemAllocator_Release(pMemAlloc);
 209
 210         /* break connection if we couldn't get the allocator */
 211         if (FAILED(hr))
 212             IPin_Disconnect(pReceivePin);
 213     }
 214
 215     if (FAILED(hr))
 216     {
 217         IPin_Release(This->pin.pConnectedTo);
 218         This->pin.pConnectedTo = NULL;
 219         DeleteMediaType(&This->pin.mtCurrent);
 220     }
 221
 222     TRACE(" -- %lx\n", hr);
 223     return hr;
 224 }
 225
 226 HRESULT OutputPin_Init(const PIN_INFO * pPinInfo, ALLOCATOR_PROPERTIES * props, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, OutputPin * pPinImpl)
 227 {
 228     TRACE("\n");
 229
 230     /* Common attributes */
 231     pPinImpl->pin.refCount = 1;
 232     pPinImpl->pin.pConnectedTo = NULL;
 233     pPinImpl->pin.fnQueryAccept = pQueryAccept;
 234     pPinImpl->pin.pUserData = pUserData;
 235     pPinImpl->pin.pCritSec = pCritSec;
 236     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 237
 238     /* Output pin attributes */
 239     pPinImpl->pMemInputPin = NULL;
 240     pPinImpl->pConnectSpecific = OutputPin_ConnectSpecific;
 241     if (props)
 242     {
 243         memcpy(&pPinImpl->allocProps, props, sizeof(pPinImpl->allocProps));
 244         if (pPinImpl->allocProps.cbAlign == 0)
 245             pPinImpl->allocProps.cbAlign = 1;
 246     }
 247     else
 248         ZeroMemory(&pPinImpl->allocProps, sizeof(pPinImpl->allocProps));
 249
 250     return S_OK;
 251 }
 252
 253 HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 254 {
 255     HRESULT hr;
 256     OutputPin *This = (OutputPin *)iface;
 257
 258     TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
 259     dump_AM_MEDIA_TYPE(pmt);
 260
 261     /* If we try to connect to ourself, we will definitely deadlock.
 262      * There are other cases where we could deadlock too, but this
 263      * catches the obvious case */
 264     assert(pReceivePin != iface);
 265
 266     EnterCriticalSection(This->pin.pCritSec);
 267     {
 268         /* if we have been a specific type to connect with, then we can either connect
 269          * with that or fail. We cannot choose different AM_MEDIA_TYPE */
 270         if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
 271             hr = This->pConnectSpecific(iface, pReceivePin, pmt);
 272         else
 273         {
 274             /* negotiate media type */
 275
 276             IEnumMediaTypes * pEnumCandidates;
 277             AM_MEDIA_TYPE * pmtCandidate; /* Candidate media type */
 278
 279             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
 280             {
 281                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 282
 283                 /* try this filter's media types first */
 284                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 285                 {
 286                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 287                         (This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
 288                     {
 289                         hr = S_OK;
 290                         TRACE("o_o\n");
 291                         DeleteMediaType(pmtCandidate);
 292                         break;
 293                     }
 294                     DeleteMediaType(pmtCandidate);
 295                 }
 296                 IEnumMediaTypes_Release(pEnumCandidates);
 297             }
 298
 299             /* then try receiver filter's media types */
 300             if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
 301             {
 302                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 303
 304                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 305                 {
 306                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 307                         (This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
 308                     {
 309                         hr = S_OK;
 310                         DeleteMediaType(pmtCandidate);
 311                         break;
 312                     }
 313                     DeleteMediaType(pmtCandidate);
 314                 } /* while */
 315                 IEnumMediaTypes_Release(pEnumCandidates);
 316             } /* if not found */
 317         } /* if negotiate media type */
 318     } /* if succeeded */
 319     LeaveCriticalSection(This->pin.pCritSec);
 320
 321     TRACE(" -- %lx\n", hr);
 322     return hr;
 323 }
 324
 325 HRESULT WINAPI OutputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 326 {
 327     ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
 328
 329     return E_UNEXPECTED;
 330 }
 331
 332 HRESULT WINAPI OutputPin_Disconnect(IPin * iface)
 333 {
 334     HRESULT hr;
 335     OutputPin *This = (OutputPin *)iface;
 336
 337     TRACE("()\n");
 338
 339     EnterCriticalSection(This->pin.pCritSec);
 340     {
 341         if (This->pMemInputPin)
 342         {
 343             IMemInputPin_Release(This->pMemInputPin);
 344             This->pMemInputPin = NULL;
 345         }
 346         if (This->pin.pConnectedTo)
 347         {
 348             IPin_Release(This->pin.pConnectedTo);
 349             This->pin.pConnectedTo = NULL;
 350             hr = S_OK;
 351         }
 352         else
 353             hr = S_FALSE;
 354     }
 355     LeaveCriticalSection(This->pin.pCritSec);
 356
 357     return hr;
 358 }
 359
 360 HRESULT OutputPin_GetDeliveryBuffer(OutputPin * This, IMediaSample ** ppSample, const REFERENCE_TIME * tStart, const REFERENCE_TIME * tStop, DWORD dwFlags)
 361 {
 362     HRESULT hr;
 363
 364     TRACE("(%p, %p, %p, %lx)\n", ppSample, tStart, tStop, dwFlags);
 365
 366     EnterCriticalSection(This->pin.pCritSec);
 367     {
 368         if (!This->pin.pConnectedTo)
 369             hr = VFW_E_NOT_CONNECTED;
 370         else
 371         {
 372             IMemAllocator * pAlloc = NULL;
 373
 374             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 375
 376             if (SUCCEEDED(hr))
 377                 hr = IMemAllocator_GetBuffer(pAlloc, ppSample, (REFERENCE_TIME *)tStart, (REFERENCE_TIME *)tStop, dwFlags);
 378
 379             if (SUCCEEDED(hr))
 380                 hr = IMediaSample_SetTime(*ppSample, (REFERENCE_TIME *)tStart, (REFERENCE_TIME *)tStop);
 381
 382             if (pAlloc)
 383                 IMemAllocator_Release(pAlloc);
 384         }
 385     }
 386     LeaveCriticalSection(This->pin.pCritSec);
 387
 388     return hr;
 389 }
 390
 391 HRESULT OutputPin_SendSample(OutputPin * This, IMediaSample * pSample)
 392 {
 393     HRESULT hr = S_OK;
 394     IMemInputPin * pMemConnected = NULL;
 395
 396     EnterCriticalSection(This->pin.pCritSec);
 397     {
 398         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 399             hr = VFW_E_NOT_CONNECTED;
 400         else
 401         {
 402             /* we don't have the lock held when using This->pMemInputPin,
 403              * so we need to AddRef it to stop it being deleted while we are
 404              * using it. */
 405             pMemConnected = This->pMemInputPin;
 406             IMemInputPin_AddRef(pMemConnected);
 407         }
 408     }
 409     LeaveCriticalSection(This->pin.pCritSec);
 410
 411     if (SUCCEEDED(hr))
 412     {
 413         /* NOTE: if we are in a critical section when Receive is called
 414          * then it causes some problems (most notably with the native Video
 415          * Renderer) if we are re-entered for whatever reason */
 416         hr = IMemInputPin_Receive(pMemConnected, pSample);
 417         IMemInputPin_Release(pMemConnected);
 418     }
 419
 420     return hr;
 421 }