loader/dshow/outputpin.c

   1 /*
   2  * Modified for use with MPlayer, detailed changelog at
   3  * http://svn.mplayerhq.hu/mplayer/trunk/
   4  */
   5
   6 #include "loader/wine/winerror.h"
   7 #include "loader/wine/windef.h"
   8 #include "outputpin.h"
   9 #include "mediatype.h"
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <stdlib.h>
  13
  14 static inline int output_unimplemented(const char* s, void* p)
  15 {
  16     Debug printf("%s(%p) called (UNIMPLEMENTED)", s, p);
  17     return E_NOTIMPL;
  18 }
  19
  20 /**
  21     An object beyond interface IEnumMediaTypes.
  22     Returned by COutputPin through call IPin::EnumMediaTypes().
  23 */
  24 typedef struct CEnumMediaTypes
  25 {
  26     IEnumMediaTypes_vt* vt;
  27     DECLARE_IUNKNOWN();
  28     AM_MEDIA_TYPE type;
  29     GUID interfaces[2];
  30 } CEnumMediaTypes;
  31
  32 /**
  33    IMemOutput interface implementation
  34 */
  35 struct COutputMemPin
  36 {
  37     IMemInputPin_vt* vt;
  38     DECLARE_IUNKNOWN();
  39     char** frame_pointer;
  40     long* frame_size_pointer;
  41     MemAllocator* pAllocator;
  42     COutputPin* parent;
  43 };
  44
  45 /**
  46  * \brief IEnumMediaTypes:Next (retrives a specified number of media types )
  47  *
  48  * \param[in]  This pointer to CEnumMediaTypes object
  49  * \param[in]  cMediaTypes number of media types to retrive
  50  * \param[out] ppMediaTypes array of AM_MEDIA_TYPE structure pointers of size cMediaTypes
  51  * \param[out] pcFetched address of variables that receives number of returned media types
  52  *
  53  * \return S_OK - success
  54  * \return S_FALSE - did not return as meny structures as requested
  55  * \return E_INVALIDARG Invalid argument
  56  * \return E_POINTER Null pointer
  57  * \return VFW_E_ENUM_OUT_OF_SYNC - pin's state has changed and is now inconsistent with enumerator
  58  *
  59  */
  60 static HRESULT STDCALL CEnumMediaTypes_Next(IEnumMediaTypes * This,
  61                                             /* [in] */ ULONG cMediaTypes,
  62                                             /* [size_is][out] */ AM_MEDIA_TYPE **ppMediaTypes,
  63                                             /* [out] */ ULONG *pcFetched)
  64 {
  65     AM_MEDIA_TYPE* type = &((CEnumMediaTypes*)This)->type;
  66     Debug printf("CEnumMediaTypes::Next(%p) called\n", This);
  67     if (!ppMediaTypes)
  68         return E_INVALIDARG;
  69     if (!pcFetched && (cMediaTypes!=1))
  70         return E_INVALIDARG;
  71     if (cMediaTypes <= 0)
  72         return 0;
  73
  74     if (pcFetched)
  75         *pcFetched=1;
  76     ppMediaTypes[0] = CreateMediaType(type);
  77
  78     if (cMediaTypes == 1)
  79         return 0;
  80     return 1;
  81 }
  82
  83 /* I expect that these methods are unused. */
  84
  85 /**
  86  * \brief IEnumMediaTypes::Skip (skips over a specified number of media types)
  87  *
  88  * \param[in]  This pointer to CEnumMEdiaTypes object
  89  * \param[in]  cMediaTypes number of media types to skip
  90  *
  91  * \return S_OK - success
  92  * \return S_FALSE - skipped past the end of the sequence
  93  * \return VFW_E_ENUM_OUT_OF_SYNC - pin's state has changed and is now inconsistent with enumerator
  94  *
  95  */
  96 static HRESULT STDCALL CEnumMediaTypes_Skip(IEnumMediaTypes * This,
  97                                             /* [in] */ ULONG cMediaTypes)
  98 {
  99     return output_unimplemented("CEnumMediaTypes::Skip", This);
 100 }
 101
 102 /**
 103  * \brief IEnumMediaTypes::Reset (resets enumeration sequence to beginning)
 104  *
 105  * \param[in]  This pointer to CEnumMEdiaTypes object
 106  *
 107  * \return S_OK - success
 108  *
 109  */
 110 static HRESULT STDCALL CEnumMediaTypes_Reset(IEnumMediaTypes * This)
 111 {
 112     Debug printf("CEnumMediaTypes::Reset(%p) called\n", This);
 113     return 0;
 114 }
 115
 116 /**
 117  * \brief IEnumMediaTypes::Clone (makes a copy of enumerator, returned object
 118  *        starts at the same position as original)
 119  *
 120  * \param[in]  This pointer to CEnumMEdiaTypes object
 121  * \param[out] ppEnum address of variable that receives pointer to IEnumMediaTypes interface
 122  *
 123  * \return S_OK - success
 124  * \return E_OUTOFMEMRY - Insufficient memory
 125  * \return E_POINTER - Null pointer
 126  * \return VFW_E_ENUM_OUT_OF_SYNC - pin's state has changed and is now inconsistent with enumerator
 127  *
 128  */
 129 static HRESULT STDCALL CEnumMediaTypes_Clone(IEnumMediaTypes * This,
 130                                       /* [out] */ IEnumMediaTypes **ppEnum)
 131 {
 132     Debug printf("CEnumMediaTypes::Clone(%p) called\n", This);
 133     return E_NOTIMPL;
 134 }
 135
 136 /**
 137  * \brief CEnumMediaTypes destructor
 138  *
 139  * \param[in]  This pointer to CEnumMediaTypes object
 140  *
 141  */
 142 static void CEnumMediaTypes_Destroy(CEnumMediaTypes* This)
 143 {
 144     FreeMediaType(&(This->type));
 145     free(This->vt);
 146     free(This);
 147 }
 148
 149 // IEnumMediaTypes->IUnknown methods
 150 IMPLEMENT_IUNKNOWN(CEnumMediaTypes)
 151
 152 /**
 153  * \brief CEnumMediaTypes constructor
 154  *
 155  * \param[in]  amt media type for enumerating
 156  *
 157  * \return pointer to CEnumMEdiaTypes object or NULL if error occured
 158  *
 159  */
 160 static CEnumMediaTypes* CEnumMediaTypesCreate(const AM_MEDIA_TYPE* amt)
 161 {
 162     CEnumMediaTypes *This = malloc(sizeof(CEnumMediaTypes)) ;
 163
 164     if (!This)
 165         return NULL;
 166
 167     This->vt = malloc(sizeof(IEnumMediaTypes_vt));
 168     if (!This->vt)
 169     {
 170         free(This);
 171         return NULL;
 172     }
 173
 174     This->refcount = 1;
 175     CopyMediaType(&(This->type),amt);
 176
 177     This->vt->QueryInterface = CEnumMediaTypes_QueryInterface;
 178     This->vt->AddRef = CEnumMediaTypes_AddRef;
 179     This->vt->Release = CEnumMediaTypes_Release;
 180     This->vt->Next = CEnumMediaTypes_Next;
 181     This->vt->Skip = CEnumMediaTypes_Skip;
 182     This->vt->Reset = CEnumMediaTypes_Reset;
 183     This->vt->Clone = CEnumMediaTypes_Clone;
 184
 185     This->interfaces[0] = IID_IUnknown;
 186     This->interfaces[1] = IID_IEnumMediaTypes;
 187
 188     return This;
 189 }
 190
 191
 192 /*************
 193  * COutputPin
 194  *
 195  * WARNING:
 196  * This is implementation of INPUT pin in DirectShow's terms
 197  *
 198  *************/
 199
 200
 201 /**
 202  *
 203  * \brief IUnknown::QueryInterface (query object for interface)
 204  * \param[in]  This pointer to IUnknown interface
 205  * \param[in]  iid  GUID of requested interface
 206  * \param[out] ppv  receives pointer to interface
 207  *
 208  * \return S_OK - success (and *ppv contains valid pointer)
 209  * \return E_NOINTERFACE - interface not found (and *ppv was set NULL)
 210  *
 211  * \note
 212  * Make sure to call Release on received interface when you are done
 213  *
 214  */
 215 static HRESULT STDCALL COutputPin_QueryInterface(IUnknown* This, const GUID* iid, void** ppv)
 216 {
 217     COutputPin* p = (COutputPin*) This;
 218
 219     Debug printf("COutputPin_QueryInterface(%p) called\n", This);
 220     if (!ppv)
 221         return E_INVALIDARG;
 222
 223     if (memcmp(iid, &IID_IUnknown, 16) == 0)
 224     {
 225         *ppv = p;
 226         p->vt->AddRef(This);
 227         return 0;
 228     }
 229     if (memcmp(iid, &IID_IMemInputPin, 16) == 0)
 230     {
 231         *ppv = p->mempin;
 232         p->mempin->vt->AddRef((IUnknown*)*ppv);
 233         return 0;
 234     }
 235
 236     Debug printf("Unknown interface : %08x-%04x-%04x-%02x%02x-"
 237                  "%02x%02x%02x%02x%02x%02x\n",
 238                  iid->f1,  iid->f2,  iid->f3,
 239                  (unsigned char)iid->f4[1], (unsigned char)iid->f4[0],
 240                  (unsigned char)iid->f4[2], (unsigned char)iid->f4[3],
 241                  (unsigned char)iid->f4[4], (unsigned char)iid->f4[5],
 242                  (unsigned char)iid->f4[6], (unsigned char)iid->f4[7]);
 243     return E_NOINTERFACE;
 244 }
 245
 246 // IPin methods
 247
 248 /**
 249  * \brief IPin::Connect (connects pin to another pin)
 250  *
 251  * \param[in] This          pointer to IPin interface
 252  * \param[in] pReceivePin   pointer to IPin interface of remote pin
 253  * \param[in] pmt suggested media type for link. Can be NULL (any media type)
 254  *
 255  * \return S_OK - success.
 256  * \return VFW_E_ALREADY_CONNECTED - pin already connected
 257  * \return VFW_E_NOT_STOPPED - filter is active
 258  * \return VFW_E_TYPE_NOT_ACCEPT - type is not acceptable
 259  * \return Apropriate error code otherwise.
 260  *
 261  */
 262 static HRESULT STDCALL COutputPin_Connect(IPin * This,
 263                                     /* [in] */ IPin *pReceivePin,
 264                                     /* [in] */ /* const */ AM_MEDIA_TYPE *pmt)
 265 {
 266     Debug printf("COutputPin_Connect(%p) called\n",This);
 267 /*
 268     *pmt=((COutputPin*)This)->type;
 269     if(pmt->cbFormat>0)
 270     {
 271         pmt->pbFormat=malloc(pmt->cbFormat);
 272         memcpy(pmt->pbFormat, ((COutputPin*)This)->type.pbFormat, pmt->cbFormat);
 273     }
 274 */
 275     //return E_NOTIMPL;
 276     return 0;// XXXXXXXXXXXXX CHECKME XXXXXXXXXXXXXXX
 277     // if I put return 0; here, it crashes
 278 }
 279
 280 /**
 281  * \brief IPin::ReceiveConnection (accepts a connection from another pin)
 282  *
 283  * \param[in] This       pointer to IPin interface
 284  * \param[in] pConnector connecting pin's IPin interface
 285  * \param[in] pmt        suggested media type for connection
 286  *
 287  * \return S_OK - success
 288  * \return E_POINTER - Null pointer
 289  * \return VFW_E_ALREADY_CONNECTED - pin already connected
 290  * \return VFW_E_NOT_STOPPED - filter is active
 291  * \return VFW_E_TYPE_NOT_ACCEPT - type is not acceptable
 292  *
 293  * \note
 294  * When returning S_OK method should also do the following:
 295  *  - store media type and return the same type in IPin::ConnectionMediaType
 296  *  - store pConnector and return it in IPin::ConnectedTo
 297  *
 298  */
 299 static HRESULT STDCALL COutputPin_ReceiveConnection(IPin * This,
 300                                                     /* [in] */ IPin *pConnector,
 301                                                     /* [in] */ const AM_MEDIA_TYPE *pmt)
 302 {
 303     Debug printf("COutputPin_ReceiveConnection(%p) called\n", This);
 304     ((COutputPin*)This)->remote = pConnector;
 305     return 0;
 306 }
 307
 308 /**
 309  * \brief IPin::Disconnect (accepts a connection from another pin)
 310  *
 311  * \param[in] This pointer to IPin interface
 312  *
 313  * \return S_OK - success
 314  * \return S_FALSE - pin was not connected
 315  * \return VFW_E_NOT_STOPPED - filter is active
 316  *
 317  * \note
 318  *   To break connection you have to also call Disconnect on other pin
 319  */
 320 static HRESULT STDCALL COutputPin_Disconnect(IPin * This)
 321 {
 322     Debug printf("COutputPin_Disconnect(%p) called\n", This);
 323     return 1;
 324 }
 325
 326 /**
 327  * \brief IPin::ConnectedTo (retrieves pointer to the connected pin, if such exist)
 328  *
 329  * \param[in]  This pointer to IPin interface
 330  * \param[out] pPin pointer to remote pin's IPin interface
 331  *
 332  * \return S_OK - success
 333  * \return E_POINTER - Null pointer
 334  * \return VFW_E_NOT_CONNECTED - pin is not connected
 335  *
 336  * \note
 337  * Caller must call Release on received IPin, when done
 338  */
 339 static HRESULT STDCALL COutputPin_ConnectedTo(IPin * This,
 340                                         /* [out] */ IPin **pPin)
 341 {
 342     Debug printf("COutputPin_ConnectedTo(%p) called\n", This);
 343     if (!pPin)
 344         return E_INVALIDARG;
 345     *pPin = ((COutputPin*)This)->remote;
 346     return 0;
 347 }
 348
 349 /**
 350  * \brief IPin::ConnectionMediaType (retrieves media type for connection, if such exist)
 351  *
 352  * \param[in]  This pointer to IPin interface
 353  * \param[out] pmt pointer to AM_MEDIA_TYPE,  that receives connection media type
 354  *
 355  * \return S_OK - success
 356  * \return E_POINTER - Null pointer
 357  * \return VFW_E_NOT_CONNECTED - pin is not connected
 358  *
 359  */
 360 static HRESULT STDCALL COutputPin_ConnectionMediaType(IPin * This,
 361                                                       /* [out] */ AM_MEDIA_TYPE *pmt)
 362 {
 363     Debug printf("COutputPin_ConnectionMediaType(%p) called\n",This);
 364     if (!pmt)
 365         return E_INVALIDARG;
 366     CopyMediaType(pmt,&(((COutputPin*)This)->type));
 367     return 0;
 368 }
 369
 370 /**
 371  * \brief IPin::QueryPinInfo (retrieves information about the pin)
 372  *
 373  * \param[in]  This  pointer to IPin interface
 374  * \param[out] pInfo pointer to PIN_INFO structure, that receives pin info
 375  *
 376  * \return S_OK - success
 377  * \return E_POINTER - Null pointer
 378  *
 379  * \note
 380  * If pInfo->pFilter is not NULL, then caller must call Release on pInfo->pFilter when done
 381  *
 382  */
 383 static HRESULT STDCALL COutputPin_QueryPinInfo(IPin * This,
 384                                                /* [out] */ PIN_INFO *pInfo)
 385 {
 386     return output_unimplemented("COutputPin_QueryPinInfo", This);
 387 }
 388
 389 /**
 390  * \brief IPin::QueryDirection (retrieves pin direction)
 391  *
 392  * \param[in]  This    pointer to IPin interface
 393  * \param[out] pPinDir pointer to variable, that receives pin direction (PINDIR_INPUT,PINDIR_OUTPUT)
 394  *
 395  * \return S_OK - success
 396  * \return E_POINTER - Null pointer
 397  *
 398  */
 399 static HRESULT STDCALL COutputPin_QueryDirection(IPin * This,
 400                                            /* [out] */ PIN_DIRECTION *pPinDir)
 401 {
 402     Debug printf("COutputPin_QueryDirection(%p) called\n", This);
 403     if (!pPinDir)
 404         return E_INVALIDARG;
 405     *pPinDir = PINDIR_INPUT;
 406     return 0;
 407 }
 408
 409 /**
 410  * \brief IPin::QueryId (retrieves pin identificator)
 411  *
 412  * \param[in]  This pointer to IPin interface
 413  * \param[out] Id   adress of variable, that receives string with pin's Id.
 414  *
 415  * \return S_OK - success
 416  * \return E_OUTOFMEMORY - Insufficient memory
 417  * \return E_POINTER     - Null pointer
 418  *
 419  * \note
 420  * Pin's Id is not the same as pin's name
 421  *
 422  */
 423 static HRESULT STDCALL COutputPin_QueryId(IPin * This,
 424                                           /* [out] */ LPWSTR *Id)
 425 {
 426     return output_unimplemented("COutputPin_QueryId", This);
 427 }
 428
 429 /**
 430  * \brief IPin::QueryAccept (determines can media type be accepted or not)
 431  *
 432  * \param[in] This  pointer to IPin interface
 433  * \param[in] pmt   Media type to check
 434  *
 435  * \return S_OK - success
 436  * \return S_FALSE - pin rejects media type
 437  *
 438  */
 439 static HRESULT STDCALL COutputPin_QueryAccept(IPin * This,
 440                                               /* [in] */ const AM_MEDIA_TYPE *pmt)
 441 {
 442     return output_unimplemented("COutputPin_QueryAccept", This);
 443 }
 444
 445 /**
 446  * \brief IPin::EnumMediaTypes (enumerates the pin's preferred media types)
 447  *
 448  * \param[in] This  pointer to IPin interface
 449  * \param[out] ppEnum adress of variable that receives pointer to IEnumMEdiaTypes interface
 450  *
 451  * \return S_OK - success
 452  * \return E_OUTOFMEMORY - Insufficient memory
 453  * \return E_POINTER     - Null pointer
 454  *
 455  * \note
 456  * Caller must call Release on received interface when done
 457  *
 458  */
 459 static HRESULT STDCALL COutputPin_EnumMediaTypes(IPin * This,
 460                                            /* [out] */ IEnumMediaTypes **ppEnum)
 461 {
 462     Debug printf("COutputPin_EnumMediaTypes(%p) called\n",This);
 463     if (!ppEnum)
 464         return E_INVALIDARG;
 465     *ppEnum = (IEnumMediaTypes*) CEnumMediaTypesCreate(&((COutputPin*)This)->type);
 466     return 0;
 467 }
 468
 469 /**
 470  * \brief IPin::QueryInternalConnections (retries pin's internal connections)
 471  *
 472  * \param[in]     This  pointer to IPin interface
 473  * \param[out]    apPin Array that receives pins, internally connected to this
 474  * \param[in,out] nPint Size of an array
 475  *
 476  * \return S_OK - success
 477  * \return S_FALSE - pin rejects media type
 478  * \return E_NOTIMPL - not implemented
 479  *
 480  */
 481 static HRESULT STDCALL COutputPin_QueryInternalConnections(IPin * This,
 482                                                      /* [out] */ IPin **apPin,
 483                                                      /* [out][in] */ ULONG *nPin)
 484 {
 485     return output_unimplemented("COutputPin_QueryInternalConnections", This);
 486 }
 487
 488 /**
 489  * \brief IPin::EndOfStream (notifies pin, that no data is expected, until new run command)
 490  *
 491  * \param[in] This  pointer to IPin interface
 492  *
 493  * \return S_OK - success
 494  * \return E_UNEXPECTED - The pin is output pin
 495  *
 496  * \note
 497  * IMemoryInputPin::Receive,IMemoryInputPin::ReceiveMultiple, IMemoryInputPin::EndOfStream,
 498  * IMemAllocator::GetBuffer runs in different (streaming) thread then other
 499  * methods (application thread).
 500  * IMemoryInputPin::NewSegment runs either in streaming or application thread.
 501  * Developer must use critical sections for thread-safing work.
 502  *
 503  */
 504 static HRESULT STDCALL COutputPin_EndOfStream(IPin * This)
 505 {
 506     return output_unimplemented("COutputPin_EndOfStream", This);
 507 }
 508
 509 /**
 510  * \brief IPin::BeginFlush (begins a flush operation)
 511  *
 512  * \param[in] This  pointer to IPin interface
 513  *
 514  * \return S_OK - success
 515  * \return E_UNEXPECTED - The pin is output pin
 516  *
 517  */
 518 static HRESULT STDCALL COutputPin_BeginFlush(IPin * This)
 519 {
 520     return output_unimplemented("COutputPin_BeginFlush", This);
 521 }
 522
 523 /**
 524  * \brief IPin::EndFlush (ends a flush operation)
 525  *
 526  * \param[in] This  pointer to IPin interface
 527  *
 528  * \return S_OK - success
 529  * \return E_UNEXPECTED - The pin is output pin
 530  *
 531  */
 532 static HRESULT STDCALL COutputPin_EndFlush(IPin * This)
 533 {
 534     return output_unimplemented("COutputPin_EndFlush", This);
 535 }
 536
 537 /**
 538  * \brief IPin::NewSegment (media sample received after this call grouped as segment with common
 539  *        start,stop time and rate)
 540  *
 541  * \param[in] This   pointer to IPin interface
 542  * \param[in] tStart start time of new segment
 543  * \param[in] tStop  end time of new segment
 544  * \param[in] dRate  rate at wich segment should be processed
 545  *
 546  * \return S_OK - success
 547  * \return E_UNEXPECTED - The pin is output pin
 548  *
 549  */
 550 static HRESULT STDCALL COutputPin_NewSegment(IPin * This,
 551                                        /* [in] */ REFERENCE_TIME tStart,
 552                                        /* [in] */ REFERENCE_TIME tStop,
 553                                        /* [in] */ double dRate)
 554 {
 555     Debug printf("COutputPin_NewSegment(%Ld,%Ld,%f) called\n",
 556                  tStart, tStop, dRate);
 557     return 0;
 558 }
 559
 560
 561
 562 // IMemInputPin->IUnknown methods
 563
 564 /**
 565  * \brief IUnknown::QueryInterface (query object for interface)
 566  *
 567  * \param[in]  This pointer to IUnknown interface
 568  * \param[in]  iid  GUID of requested interface
 569  * \param[out] ppv  receives pointer to interface
 570  *
 571  * \return S_OK - success (and *ppv contains valid pointer)
 572  * \return E_NOINTERFACE - interface not found (and *ppv was set NULL)
 573  *
 574  * \note
 575  * Make sure to call Release on received interface when you are done
 576  *
 577  */
 578 static HRESULT STDCALL COutputMemPin_QueryInterface(IUnknown* This, const GUID* iid, void** ppv)
 579 {
 580     COutputMemPin* p = (COutputMemPin*)This;
 581
 582     Debug printf("COutputMemPin_QueryInterface(%p) called\n", This);
 583     if (!ppv)
 584         return E_INVALIDARG;
 585
 586     if(!memcmp(iid, &IID_IUnknown, 16))
 587     {
 588         *ppv = p;
 589         p->vt->AddRef(This);
 590         return 0;
 591     }
 592     /*if(!memcmp(iid, &IID_IPin, 16))
 593     {
 594         COutputPin* ptr=(COutputPin*)(This-1);
 595         *ppv=(void*)ptr;
 596         AddRef((IUnknown*)ptr);
 597         return 0;
 598     }*/
 599     if(!memcmp(iid, &IID_IMemInputPin, 16))
 600     {
 601         *ppv = p;
 602         p->vt->AddRef(This);
 603         return 0;
 604     }
 605     Debug printf("Unknown interface : %08x-%04x-%04x-%02x%02x-" \
 606                  "%02x%02x%02x%02x%02x%02x\n",
 607                  iid->f1,  iid->f2,  iid->f3,
 608                  (unsigned char)iid->f4[1], (unsigned char)iid->f4[0],
 609                  (unsigned char)iid->f4[2], (unsigned char)iid->f4[3],
 610                  (unsigned char)iid->f4[4], (unsigned char)iid->f4[5],
 611                  (unsigned char)iid->f4[6], (unsigned char)iid->f4[7]);
 612     return E_NOINTERFACE;
 613 }
 614
 615 // IMemInputPin methods
 616
 617 /**
 618  * \brief IMemInputPin::GetAllocator (retrives memory allocator, proposed by pin)
 619  *
 620  * \param[in]  This pointer to IMemInputPin interface
 621  * \param[out]  ppAllocator  address of variable that receives allocator's IMemAllocator interface
 622  *
 623  * \return S_OK - success
 624  * \return VFW_E_NO_ALLOCATOR - No allocator
 625  *
 626  * \note
 627  * Make sure to call Release on received interface when you are done
 628  *
 629  */
 630 static HRESULT STDCALL COutputMemPin_GetAllocator(IMemInputPin* This,
 631                                          /* [out] */ IMemAllocator** ppAllocator)
 632 {
 633     Debug printf("COutputMemPin_GetAllocator(%p, %p) called\n", This->vt, ppAllocator);
 634     *ppAllocator = (IMemAllocator*) MemAllocatorCreate();
 635     return 0;
 636 }
 637
 638 /**
 639  *
 640  * \brief IMemInputPin::NotifyAllocator (specifies an allocator for the connection)
 641  *
 642  * \param[in]  This pointer to IMemInputPin interface
 643  * \param[in]  pAllocator  allocator's IMemAllocator interface
 644  * \param[in]  bReadOnly specifies whether samples from allocator are readonly
 645  *
 646  * \return S_OK - success
 647  * \return Apropriate error code otherwise
 648  *
 649  */
 650 static HRESULT STDCALL COutputMemPin_NotifyAllocator(IMemInputPin* This,
 651                                                   /* [in] */ IMemAllocator* pAllocator,
 652                                                   /* [in] */ int bReadOnly)
 653 {
 654     Debug printf("COutputMemPin_NotifyAllocator(%p, %p) called\n", This, pAllocator);
 655     ((COutputMemPin*)This)->pAllocator = (MemAllocator*) pAllocator;
 656     return 0;
 657 }
 658
 659 /**
 660  * \brief IMemInputPin::GetAllocatorRequirements (retrieves allocator properties requested by
 661  *        input pin)
 662  *
 663  * \param[in]  This pointer to IMemInputPin interface
 664  * \param[out]  pProps pointer to a structure that receives allocator properties
 665  *
 666  * \return S_OK - success
 667  * \return E_NOTIMPL - Not implemented
 668  * \return E_POINTER - Null pointer
 669  *
 670  */
 671 static HRESULT STDCALL COutputMemPin_GetAllocatorRequirements(IMemInputPin* This,
 672                                                            /* [out] */ ALLOCATOR_PROPERTIES* pProps)
 673 {
 674     return output_unimplemented("COutputMemPin_GetAllocatorRequirements", This);
 675 }
 676
 677 /**
 678  * \brief IMemInputPin::Receive (receives the next media sample int thre stream)
 679  *
 680  * \param[in]  This pointer to IMemInputPin interface
 681  * \param[in]  pSample pointer to sample's IMediaSample interface
 682  *
 683  * \return S_OK - success
 684  * \return S_FALSE - The sample was rejected
 685  * \return E_POINTER - Null pointer
 686  * \return VFW_E_INVALIDMEDIATYPE - invalid media type
 687  * \return VFW_E_RUNTIME_ERROR - run-time error occured
 688  * \return VFW_E_WRONG_STATE - pin is stopped
 689  *
 690  * \remarks
 691  * Method san do on of the following:
 692  * - reject sample
 693  * - accept sample and process it in another thread
 694  * - accept sample and process it before returning
 695  *
 696  * In second case method should increase reference count for sample (through AddRef)
 697  * In the last case method might block indefinitely. If this might
 698  * happen IMemInpuPin::ReceiveCAnBlock returns S_OK
 699  *
 700  * \note
 701  * IMemoryInputPin::Receive,IMemoryInputPin::ReceiveMultiple, IMemoryInputPin::EndOfStream,
 702  * IMemAllocator::GetBuffer runs in different (streaming) thread then other
 703  * methods (application thread).
 704  * IMemoryInputPin::NewSegment runs either in streaming or application thread.
 705  * Developer must use critical sections for thread-safing work.
 706  *
 707  */
 708 static HRESULT STDCALL COutputMemPin_Receive(IMemInputPin* This,
 709                                           /* [in] */ IMediaSample* pSample)
 710 {
 711     Debug printf("COutputMemPin_Receive(%p) called\n", This);
 712     if (!pSample)
 713         return E_INVALIDARG;
 714
 715     if(((COutputMemPin*)This)->parent->SampleProc)
 716         return ((COutputMemPin*)This)->parent->SampleProc(((COutputMemPin*)This)->parent->pUserData,pSample);
 717     //reject sample
 718     return S_FALSE;
 719 }
 720
 721 /**
 722  * \brief IMemInputPin::ReceiveMultiple (receives multiple samples in the stream)
 723  *
 724  * \param[in]  This pointer to IMemInputPin interface
 725  * \param[in]  pSamples          pointer to array with samples
 726  * \param[in]  nSamples          number of samples in array
 727  * \param[out] nSamplesProcessed number of processed samples
 728  *
 729  * \return S_OK - success
 730  * \return S_FALSE - The sample was rejected
 731  * \return E_POINTER - Null pointer
 732  * \return VFW_E_INVALIDMEDIATYPE - invalid media type
 733  * \return VFW_E_RUNTIME_ERROR - run-time error occured
 734  * \return VFW_E_WRONG_STATE - pin is stopped
 735  *
 736  * \remarks
 737  * This method behaves like IMemInputPin::Receive but for array of samples
 738  *
 739  * \note
 740  * IMemoryInputPin::Receive,IMemoryInputPin::ReceiveMultiple, IMemoryInputPin::EndOfStream,
 741  * IMemAllocator::GetBuffer runs in different (streaming) thread then other
 742  * methods (application thread).
 743  * IMemoryInputPin::NewSegment runs either in streaming or application thread.
 744  * Developer must use critical sections for thread-safing work.
 745  *
 746  */
 747 static HRESULT STDCALL COutputMemPin_ReceiveMultiple(IMemInputPin * This,
 748                                             /* [size_is][in] */ IMediaSample **pSamples,
 749                                             /* [in] */ long nSamples,
 750                                             /* [out] */ long *nSamplesProcessed)
 751 {
 752     HRESULT hr;
 753     Debug printf("COutputMemPin_ReceiveMultiple(%p) %ld\n", This,nSamples);
 754     for(*nSamplesProcessed=0; *nSamplesProcessed < nSamples; *nSamplesProcessed++) {
 755          hr = This->vt->Receive(This,pSamples[*nSamplesProcessed]);
 756          if (hr != S_OK) break;
 757     }
 758     return hr;
 759 }
 760
 761 /**
 762  * \brief IMemInputPin::ReceiveCanBlock (determines whether IMemInputPin:::Receive might block)
 763  *
 764  * \param[in]  This pointer to IMemInputPin interface
 765  *
 766  * \return S_OK - the pin might block
 767  * \return S_FALSE - the pin will not block
 768  *
 769  */
 770 static HRESULT STDCALL COutputMemPin_ReceiveCanBlock(IMemInputPin * This)
 771 {
 772     return output_unimplemented("COutputMemPin_ReceiveCanBlock", This);
 773 }
 774
 775 /**
 776  * \brief COutputPin::SetNewFormat(sets new media format for the pin)
 777  *
 778  * \param[in]  This pointer to COutputPin class
 779  * \param[in]  amt  new media format
 780  *
 781  */
 782 static void COutputPin_SetNewFormat(COutputPin* This, const AM_MEDIA_TYPE* amt)
 783 {
 784     CopyMediaType(&(This->type),amt);
 785 }
 786
 787 /**
 788  * \brief COutputPin destructor
 789  *
 790  * \param[in]  This pointer to COutputPin class
 791  *
 792  */
 793 static void COutputPin_Destroy(COutputPin* This)
 794 {
 795     if (This->mempin->vt)
 796         free(This->mempin->vt);
 797     if (This->mempin)
 798         free(This->mempin);
 799     if (This->vt)
 800         free(This->vt);
 801     FreeMediaType(&(This->type));
 802     free(This);
 803 }
 804
 805 /**
 806  * \brief IUnknown::AddRef (increases reference counter for interface)
 807  *
 808  * \param[in]  This pointer to IUnknown class
 809  *
 810  * \return new value of reference counter
 811  *
 812  * \remarks
 813  * Return value should be used only for debug purposes
 814  *
 815  */
 816 static HRESULT STDCALL COutputPin_AddRef(IUnknown* This)
 817 {
 818     Debug printf("COutputPin_AddRef(%p) called (%d)\n", This, ((COutputPin*)This)->refcount);
 819     ((COutputPin*)This)->refcount++;
 820     return 0;
 821 }
 822
 823 /**
 824  * \brief IUnknown::Release (desreases reference counter for interface)
 825  *
 826  * \param[in]  This pointer to IUnknown class
 827  *
 828  * \return new value of reference counter
 829  *
 830  * \remarks
 831  * When reference counter reaches zero calls destructor
 832  * Return value should be used only for debug purposes
 833  *
 834  */
 835 static HRESULT STDCALL COutputPin_Release(IUnknown* This)
 836 {
 837     Debug printf("COutputPin_Release(%p) called (%d)\n", This, ((COutputPin*)This)->refcount);
 838     if (--((COutputPin*)This)->refcount <= 0)
 839         COutputPin_Destroy((COutputPin*)This);
 840
 841     return 0;
 842 }
 843
 844 /**
 845  * \brief IUnknown::AddRef (increases reference counter for interface)
 846  *
 847  * \param[in]  This pointer to IUnknown class
 848  *
 849  * \return new value of reference counter
 850  *
 851  * \remarks
 852  * Return value should be used only for debug purposes
 853  *
 854  */
 855 static HRESULT STDCALL COutputMemPin_AddRef(IUnknown* This)
 856 {
 857     COutputMemPin* p = (COutputMemPin*) This;
 858     Debug printf("COutputMemPin_AddRef(%p) called (%p, %d)\n", p, p->parent, p->parent->refcount);
 859     p->parent->refcount++;
 860     return 0;
 861 }
 862
 863 /**
 864  * \brief IUnknown::Release (desreases reference counter for interface)
 865  *
 866  * \param[in]  This pointer to IUnknown class
 867  *
 868  * \return new value of reference counter
 869  *
 870  * \remarks
 871  * When reference counter reaches zero calls destructor
 872  * Return value should be used only for debug purposes
 873  *
 874  */
 875 static HRESULT STDCALL COutputMemPin_Release(IUnknown* This)
 876 {
 877     COutputMemPin* p = (COutputMemPin*) This;
 878     Debug printf("COutputMemPin_Release(%p) called (%p,   %d)\n",
 879                  p, p->parent, p->parent->refcount);
 880     if (--p->parent->refcount <= 0)
 881         COutputPin_Destroy(p->parent);
 882     return 0;
 883 }
 884
 885 /**
 886  * \brief COutputPin constructor
 887  *
 888  * \param[in]  amt media type for pin
 889  *
 890  * \return pointer to COutputPin if success
 891  * \return NULL if error occured
 892  *
 893  */
 894 COutputPin* COutputPinCreate(const AM_MEDIA_TYPE* amt,SAMPLEPROC SampleProc,void* pUserData)
 895 {
 896     COutputPin* This = malloc(sizeof(COutputPin));
 897     IMemInputPin_vt* ivt;
 898
 899     if (!This)
 900         return NULL;
 901
 902     This->vt = malloc(sizeof(IPin_vt));
 903     This->mempin = malloc(sizeof(COutputMemPin));
 904     ivt = malloc(sizeof(IMemInputPin_vt));
 905
 906     if (!This->vt || !This->mempin || !ivt)
 907     {
 908         COutputPin_Destroy(This);
 909         free(ivt);
 910         return NULL;
 911     }
 912
 913     This->SampleProc=SampleProc;
 914     This->pUserData=pUserData;
 915
 916     This->mempin->vt = ivt;
 917
 918     This->refcount = 1;
 919     This->remote = 0;
 920     CopyMediaType(&(This->type),amt);
 921
 922     This->vt->QueryInterface = COutputPin_QueryInterface;
 923     This->vt->AddRef = COutputPin_AddRef;
 924     This->vt->Release = COutputPin_Release;
 925     This->vt->Connect = COutputPin_Connect;
 926     This->vt->ReceiveConnection = COutputPin_ReceiveConnection;
 927     This->vt->Disconnect = COutputPin_Disconnect;
 928     This->vt->ConnectedTo = COutputPin_ConnectedTo;
 929     This->vt->ConnectionMediaType = COutputPin_ConnectionMediaType;
 930     This->vt->QueryPinInfo = COutputPin_QueryPinInfo;
 931     This->vt->QueryDirection = COutputPin_QueryDirection;
 932     This->vt->QueryId = COutputPin_QueryId;
 933     This->vt->QueryAccept = COutputPin_QueryAccept;
 934     This->vt->EnumMediaTypes = COutputPin_EnumMediaTypes;
 935     This->vt->QueryInternalConnections = COutputPin_QueryInternalConnections;
 936     This->vt->EndOfStream = COutputPin_EndOfStream;
 937     This->vt->BeginFlush = COutputPin_BeginFlush;
 938     This->vt->EndFlush = COutputPin_EndFlush;
 939     This->vt->NewSegment = COutputPin_NewSegment;
 940
 941     This->mempin->vt->QueryInterface = COutputMemPin_QueryInterface;
 942     This->mempin->vt->AddRef = COutputMemPin_AddRef;
 943     This->mempin->vt->Release = COutputMemPin_Release;
 944     This->mempin->vt->GetAllocator = COutputMemPin_GetAllocator;
 945     This->mempin->vt->NotifyAllocator = COutputMemPin_NotifyAllocator;
 946     This->mempin->vt->GetAllocatorRequirements = COutputMemPin_GetAllocatorRequirements;
 947     This->mempin->vt->Receive = COutputMemPin_Receive;
 948     This->mempin->vt->ReceiveMultiple = COutputMemPin_ReceiveMultiple;
 949     This->mempin->vt->ReceiveCanBlock = COutputMemPin_ReceiveCanBlock;
 950
 951     This->mempin->frame_size_pointer = 0;
 952     This->mempin->frame_pointer = 0;
 953     This->mempin->pAllocator = 0;
 954     This->mempin->refcount = 1;
 955     This->mempin->parent = This;
 956
 957     This->SetNewFormat = COutputPin_SetNewFormat;
 958
 959     return This;
 960 }