| 1 |
/* This file is part of the KDE project. |
| 2 |
|
| 3 |
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
| 4 |
|
| 5 |
This library is free software: you can redistribute it and/or modify |
| 6 |
it under the terms of the GNU Lesser General Public License as published by |
| 7 |
the Free Software Foundation, either version 2.1 or 3 of the License. |
| 8 |
|
| 9 |
This library is distributed in the hope that it will be useful, |
| 10 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 |
GNU Lesser General Public License for more details. |
| 13 |
|
| 14 |
You should have received a copy of the GNU Lesser General Public License |
| 15 |
along with this library. If not, see <http://www.gnu.org/licenses/>. |
| 16 |
*/ |
| 17 |
|
| 18 |
#include "qbasefilter.h" |
| 19 |
#include "qpin.h" |
| 20 |
#include "compointer.h" |
| 21 |
|
| 22 |
#include <QtCore/QMutex> |
| 23 |
|
| 24 |
QT_BEGIN_NAMESPACE |
| 25 |
|
| 26 |
namespace Phonon |
| 27 |
{ |
| 28 |
namespace DS9 |
| 29 |
{ |
| 30 |
|
| 31 |
static const AM_MEDIA_TYPE defaultMediaType = { MEDIATYPE_NULL, MEDIASUBTYPE_NULL, TRUE, FALSE, 1, GUID_NULL, 0, 0, 0}; |
| 32 |
|
| 33 |
class QEnumMediaTypes : public IEnumMediaTypes |
| 34 |
{ |
| 35 |
public: |
| 36 |
QEnumMediaTypes(QPin *pin) : m_refCount(1), m_pin(pin), m_index(0) |
| 37 |
{ |
| 38 |
m_pin->AddRef(); |
| 39 |
} |
| 40 |
|
| 41 |
~QEnumMediaTypes() |
| 42 |
{ |
| 43 |
m_pin->Release(); |
| 44 |
} |
| 45 |
|
| 46 |
STDMETHODIMP QueryInterface(const IID &iid,void **out) |
| 47 |
{ |
| 48 |
if (!out) { |
| 49 |
return E_POINTER; |
| 50 |
} |
| 51 |
|
| 52 |
HRESULT hr = S_OK; |
| 53 |
if (iid == IID_IEnumMediaTypes) { |
| 54 |
*out = static_cast<IEnumMediaTypes*>(this); |
| 55 |
} else if (iid == IID_IUnknown) { |
| 56 |
*out = static_cast<IUnknown*>(this); |
| 57 |
} else { |
| 58 |
*out = 0; |
| 59 |
hr = E_NOINTERFACE; |
| 60 |
} |
| 61 |
|
| 62 |
if (hr == S_OK) { |
| 63 |
AddRef(); |
| 64 |
} |
| 65 |
return hr; |
| 66 |
} |
| 67 |
|
| 68 |
STDMETHODIMP_(ULONG) AddRef() |
| 69 |
{ |
| 70 |
return InterlockedIncrement(&m_refCount); |
| 71 |
} |
| 72 |
|
| 73 |
STDMETHODIMP_(ULONG) Release() |
| 74 |
{ |
| 75 |
ULONG refCount = InterlockedDecrement(&m_refCount); |
| 76 |
if (refCount == 0) { |
| 77 |
delete this; |
| 78 |
} |
| 79 |
|
| 80 |
return refCount; |
| 81 |
} |
| 82 |
|
| 83 |
STDMETHODIMP Next(ULONG count, AM_MEDIA_TYPE **out, ULONG *fetched) |
| 84 |
{ |
| 85 |
QMutexLocker locker(&m_mutex); |
| 86 |
if (!out) { |
| 87 |
return E_POINTER; |
| 88 |
} |
| 89 |
|
| 90 |
if (!fetched && count > 1) { |
| 91 |
return E_INVALIDARG; |
| 92 |
} |
| 93 |
|
| 94 |
uint nbFetched = 0; |
| 95 |
while (nbFetched < count && m_index < m_pin->mediaTypes().count()) { |
| 96 |
//the caller will deallocate the memory |
| 97 |
*out = static_cast<AM_MEDIA_TYPE *>(::CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))); |
| 98 |
const AM_MEDIA_TYPE original = m_pin->mediaTypes().at(m_index); |
| 99 |
**out = QPin::copyMediaType(original); |
| 100 |
nbFetched++; |
| 101 |
m_index++; |
| 102 |
out++; |
| 103 |
} |
| 104 |
|
| 105 |
if (fetched) { |
| 106 |
*fetched = nbFetched; |
| 107 |
} |
| 108 |
|
| 109 |
return nbFetched == count ? S_OK : S_FALSE; |
| 110 |
} |
| 111 |
|
| 112 |
STDMETHODIMP Skip(ULONG count) |
| 113 |
{ |
| 114 |
QMutexLocker locker(&m_mutex); |
| 115 |
m_index = qMin(m_index + int(count), m_pin->mediaTypes().count()); |
| 116 |
return (m_index == m_pin->mediaTypes().count()) ? S_FALSE : S_OK; |
| 117 |
} |
| 118 |
|
| 119 |
STDMETHODIMP Reset() |
| 120 |
{ |
| 121 |
QMutexLocker locker(&m_mutex); |
| 122 |
m_index = 0; |
| 123 |
return S_OK; |
| 124 |
} |
| 125 |
|
| 126 |
STDMETHODIMP Clone(IEnumMediaTypes **out) |
| 127 |
{ |
| 128 |
QMutexLocker locker(&m_mutex); |
| 129 |
if (!out) { |
| 130 |
return E_POINTER; |
| 131 |
} |
| 132 |
|
| 133 |
*out = new QEnumMediaTypes(m_pin); |
| 134 |
(*out)->Skip(m_index); |
| 135 |
return S_OK; |
| 136 |
} |
| 137 |
|
| 138 |
|
| 139 |
private: |
| 140 |
LONG m_refCount; |
| 141 |
QPin *m_pin; |
| 142 |
int m_index; |
| 143 |
QMutex m_mutex; |
| 144 |
}; |
| 145 |
|
| 146 |
|
| 147 |
QPin::QPin(QBaseFilter *parent, PIN_DIRECTION dir, const QVector<AM_MEDIA_TYPE> &mt) : |
| 148 |
m_parent(parent), m_flushing(false), m_refCount(1), m_connected(0), |
| 149 |
m_direction(dir), m_mediaTypes(mt), m_connectedType(defaultMediaType), |
| 150 |
m_memAlloc(0) |
| 151 |
{ |
| 152 |
Q_ASSERT(m_parent); |
| 153 |
m_parent->addPin(this); |
| 154 |
} |
| 155 |
|
| 156 |
QPin::~QPin() |
| 157 |
{ |
| 158 |
m_parent->removePin(this); |
| 159 |
setMemoryAllocator(0); |
| 160 |
freeMediaType(m_connectedType); |
| 161 |
} |
| 162 |
|
| 163 |
//reimplementation from IUnknown |
| 164 |
STDMETHODIMP QPin::QueryInterface(REFIID iid, void**out) |
| 165 |
{ |
| 166 |
if (!out) { |
| 167 |
return E_POINTER; |
| 168 |
} |
| 169 |
|
| 170 |
HRESULT hr = S_OK; |
| 171 |
|
| 172 |
if (iid == IID_IPin) { |
| 173 |
*out = static_cast<IPin*>(this); |
| 174 |
} else if (iid == IID_IUnknown) { |
| 175 |
*out = static_cast<IUnknown*>(this); |
| 176 |
} else if (m_direction == PINDIR_OUTPUT && (iid == IID_IMediaSeeking || iid == IID_IMediaPosition)) { |
| 177 |
return m_parent->QueryInterface(iid, out); |
| 178 |
} else { |
| 179 |
*out = 0; |
| 180 |
hr = E_NOINTERFACE; |
| 181 |
} |
| 182 |
|
| 183 |
if (hr == S_OK) { |
| 184 |
AddRef(); |
| 185 |
} |
| 186 |
return hr; |
| 187 |
} |
| 188 |
|
| 189 |
STDMETHODIMP_(ULONG) QPin::AddRef() |
| 190 |
{ |
| 191 |
return InterlockedIncrement(&m_refCount); |
| 192 |
} |
| 193 |
|
| 194 |
STDMETHODIMP_(ULONG) QPin::Release() |
| 195 |
{ |
| 196 |
ULONG refCount = InterlockedDecrement(&m_refCount); |
| 197 |
if (refCount == 0) { |
| 198 |
delete this; |
| 199 |
} |
| 200 |
|
| 201 |
return refCount; |
| 202 |
} |
| 203 |
|
| 204 |
//this is called on the input pins |
| 205 |
STDMETHODIMP QPin::ReceiveConnection(IPin *pin, const AM_MEDIA_TYPE *type) |
| 206 |
{ |
| 207 |
if (!pin ||!type) { |
| 208 |
return E_POINTER; |
| 209 |
} |
| 210 |
|
| 211 |
if (connected()) { |
| 212 |
return VFW_E_ALREADY_CONNECTED; |
| 213 |
} |
| 214 |
|
| 215 |
if (filterState() != State_Stopped) { |
| 216 |
return VFW_E_NOT_STOPPED; |
| 217 |
} |
| 218 |
|
| 219 |
if (QueryAccept(type) != S_OK) { |
| 220 |
return VFW_E_TYPE_NOT_ACCEPTED; |
| 221 |
} |
| 222 |
|
| 223 |
setConnected(pin); |
| 224 |
setConnectedType(*type); |
| 225 |
|
| 226 |
return S_OK; |
| 227 |
} |
| 228 |
|
| 229 |
//this is called on the output pins |
| 230 |
STDMETHODIMP QPin::Connect(IPin *pin, const AM_MEDIA_TYPE *type) |
| 231 |
{ |
| 232 |
if (!pin) { |
| 233 |
return E_POINTER; |
| 234 |
} |
| 235 |
|
| 236 |
if (connected()) { |
| 237 |
return VFW_E_ALREADY_CONNECTED; |
| 238 |
} |
| 239 |
|
| 240 |
if (filterState() != State_Stopped) { |
| 241 |
return VFW_E_NOT_STOPPED; |
| 242 |
} |
| 243 |
|
| 244 |
HRESULT hr = S_OK; |
| 245 |
|
| 246 |
setConnected(pin); |
| 247 |
if (!type) { |
| 248 |
|
| 249 |
//let(s first try the output pin's mediaTypes |
| 250 |
if (checkOutputMediaTypesConnection(pin) != S_OK && |
| 251 |
checkOwnMediaTypesConnection(pin) != S_OK) { |
| 252 |
hr = VFW_E_NO_ACCEPTABLE_TYPES; |
| 253 |
} |
| 254 |
} else if (QueryAccept(type) == S_OK) { |
| 255 |
setConnectedType(*type); |
| 256 |
hr = pin->ReceiveConnection(this, type); |
| 257 |
} else { |
| 258 |
hr = VFW_E_TYPE_NOT_ACCEPTED; |
| 259 |
} |
| 260 |
|
| 261 |
if (FAILED(hr)) { |
| 262 |
setConnected(0); |
| 263 |
setConnectedType(defaultMediaType); |
| 264 |
} else { |
| 265 |
ComPointer<IMemInputPin> input(pin, IID_IMemInputPin); |
| 266 |
if (input) { |
| 267 |
ComPointer<IMemAllocator> alloc; |
| 268 |
input->GetAllocator(alloc.pparam()); |
| 269 |
if (alloc) { |
| 270 |
//be default we take the allocator from the input pin |
| 271 |
//we have no reason to force using our own |
| 272 |
setMemoryAllocator(alloc); |
| 273 |
} |
| 274 |
} |
| 275 |
if (memoryAllocator() == 0) { |
| 276 |
ALLOCATOR_PROPERTIES prop; |
| 277 |
if (input && input->GetAllocatorRequirements(&prop) == S_OK) { |
| 278 |
createDefaultMemoryAllocator(&prop); |
| 279 |
} else { |
| 280 |
createDefaultMemoryAllocator(); |
| 281 |
} |
| 282 |
} |
| 283 |
|
| 284 |
Q_ASSERT(memoryAllocator() != 0); |
| 285 |
if (input) { |
| 286 |
input->NotifyAllocator(memoryAllocator(), TRUE); //TRUE is arbitrarily chosen here |
| 287 |
} |
| 288 |
|
| 289 |
} |
| 290 |
|
| 291 |
return hr; |
| 292 |
} |
| 293 |
|
| 294 |
STDMETHODIMP QPin::Disconnect() |
| 295 |
{ |
| 296 |
if (!connected()) { |
| 297 |
return S_FALSE; |
| 298 |
} |
| 299 |
|
| 300 |
if (filterState() != State_Stopped) { |
| 301 |
return VFW_E_NOT_STOPPED; |
| 302 |
} |
| 303 |
|
| 304 |
setConnected(0); |
| 305 |
setConnectedType(defaultMediaType); |
| 306 |
setMemoryAllocator(0); |
| 307 |
return S_OK; |
| 308 |
} |
| 309 |
|
| 310 |
STDMETHODIMP QPin::ConnectedTo(IPin **other) |
| 311 |
{ |
| 312 |
if (!other) { |
| 313 |
return E_POINTER; |
| 314 |
} |
| 315 |
|
| 316 |
*other = connected(true); |
| 317 |
if (!(*other)) { |
| 318 |
return VFW_E_NOT_CONNECTED; |
| 319 |
} |
| 320 |
|
| 321 |
return S_OK; |
| 322 |
} |
| 323 |
|
| 324 |
STDMETHODIMP QPin::ConnectionMediaType(AM_MEDIA_TYPE *type) |
| 325 |
{ |
| 326 |
QMutexLocker locker(&m_mutex); |
| 327 |
if (!type) { |
| 328 |
return E_POINTER; |
| 329 |
} |
| 330 |
|
| 331 |
*type = copyMediaType(m_connectedType); |
| 332 |
if (!m_connected) { |
| 333 |
return VFW_E_NOT_CONNECTED; |
| 334 |
} else { |
| 335 |
return S_OK; |
| 336 |
} |
| 337 |
} |
| 338 |
|
| 339 |
STDMETHODIMP QPin::QueryPinInfo(PIN_INFO *info) |
| 340 |
{ |
| 341 |
if (!info) { |
| 342 |
return E_POINTER; |
| 343 |
} |
| 344 |
|
| 345 |
info->dir = m_direction; |
| 346 |
info->pFilter = m_parent; |
| 347 |
m_parent->AddRef(); |
| 348 |
info->achName[0] = 0; |
| 349 |
return S_OK; |
| 350 |
} |
| 351 |
|
| 352 |
STDMETHODIMP QPin::QueryDirection(PIN_DIRECTION *dir) |
| 353 |
{ |
| 354 |
if (!dir) { |
| 355 |
return E_POINTER; |
| 356 |
} |
| 357 |
|
| 358 |
*dir = m_direction; |
| 359 |
return S_OK; |
| 360 |
} |
| 361 |
|
| 362 |
STDMETHODIMP QPin::QueryId(LPWSTR *id) |
| 363 |
{ |
| 364 |
if (!id) { |
| 365 |
return E_POINTER; |
| 366 |
} |
| 367 |
|
| 368 |
*id = static_cast<LPWSTR>(::CoTaskMemAlloc(2)); |
| 369 |
*id[0] = 0; |
| 370 |
return S_OK; |
| 371 |
} |
| 372 |
|
| 373 |
STDMETHODIMP QPin::QueryAccept(const AM_MEDIA_TYPE *type) |
| 374 |
{ |
| 375 |
QMutexLocker locker(&m_mutex); |
| 376 |
if (!type) { |
| 377 |
return E_POINTER; |
| 378 |
} |
| 379 |
|
| 380 |
for (int i = 0; i < m_mediaTypes.count(); ++i) { |
| 381 |
const AM_MEDIA_TYPE ¤t = m_mediaTypes.at(i); |
| 382 |
if ( (type->majortype == current.majortype) && |
| 383 |
(current.subtype == MEDIASUBTYPE_NULL || type->subtype == current.subtype) && |
| 384 |
(type->majortype == MEDIATYPE_Stream || type->formattype != GUID_NULL || current.formattype != GUID_NULL) && |
| 385 |
(current.formattype == GUID_NULL || type->formattype == current.formattype) |
| 386 |
) { |
| 387 |
return S_OK; |
| 388 |
} |
| 389 |
} |
| 390 |
return S_FALSE; |
| 391 |
} |
| 392 |
|
| 393 |
|
| 394 |
STDMETHODIMP QPin::EnumMediaTypes(IEnumMediaTypes **emt) |
| 395 |
{ |
| 396 |
if (!emt) { |
| 397 |
return E_POINTER; |
| 398 |
} |
| 399 |
|
| 400 |
*emt = new QEnumMediaTypes(this); |
| 401 |
return S_OK; |
| 402 |
} |
| 403 |
|
| 404 |
|
| 405 |
STDMETHODIMP QPin::EndOfStream() |
| 406 |
{ |
| 407 |
return E_UNEXPECTED; |
| 408 |
} |
| 409 |
|
| 410 |
STDMETHODIMP QPin::BeginFlush() |
| 411 |
{ |
| 412 |
return E_UNEXPECTED; |
| 413 |
} |
| 414 |
|
| 415 |
STDMETHODIMP QPin::EndFlush() |
| 416 |
{ |
| 417 |
return E_UNEXPECTED; |
| 418 |
} |
| 419 |
|
| 420 |
STDMETHODIMP QPin::NewSegment(REFERENCE_TIME start, REFERENCE_TIME stop, double rate) |
| 421 |
{ |
| 422 |
QMutexLocker locker(&m_mutex); |
| 423 |
if (m_direction == PINDIR_OUTPUT && m_connected) { |
| 424 |
//we deliver this downstream |
| 425 |
m_connected->NewSegment(start, stop, rate); |
| 426 |
} |
| 427 |
return S_OK; |
| 428 |
} |
| 429 |
|
| 430 |
STDMETHODIMP QPin::QueryInternalConnections(IPin **, ULONG*) |
| 431 |
{ |
| 432 |
//this is not implemented on purpose (the input pins are connected to all the output pins) |
| 433 |
return E_NOTIMPL; |
| 434 |
} |
| 435 |
|
| 436 |
|
| 437 |
HRESULT QPin::checkOutputMediaTypesConnection(IPin *pin) |
| 438 |
{ |
| 439 |
ComPointer<IEnumMediaTypes> emt; |
| 440 |
HRESULT hr = pin->EnumMediaTypes(emt.pparam()); |
| 441 |
if (hr != S_OK) { |
| 442 |
return hr; |
| 443 |
} |
| 444 |
|
| 445 |
AM_MEDIA_TYPE *type = 0; |
| 446 |
while (emt->Next(1, &type, 0) == S_OK) { |
| 447 |
if (QueryAccept(type) == S_OK) { |
| 448 |
setConnectedType(*type); |
| 449 |
if (pin->ReceiveConnection(this, type) == S_OK) { |
| 450 |
freeMediaType(type); |
| 451 |
return S_OK; |
| 452 |
} else { |
| 453 |
setConnectedType(defaultMediaType); |
| 454 |
freeMediaType(type); |
| 455 |
} |
| 456 |
} |
| 457 |
} |
| 458 |
|
| 459 |
//we didn't find a suitable type |
| 460 |
return S_FALSE; |
| 461 |
} |
| 462 |
|
| 463 |
HRESULT QPin::checkOwnMediaTypesConnection(IPin *pin) |
| 464 |
{ |
| 465 |
for(int i = 0; i < m_mediaTypes.count(); ++i) { |
| 466 |
const AM_MEDIA_TYPE ¤t = m_mediaTypes.at(i); |
| 467 |
setConnectedType(current); |
| 468 |
HRESULT hr = pin->ReceiveConnection(this, ¤t); |
| 469 |
if (hr == S_OK) { |
| 470 |
return S_OK; |
| 471 |
} |
| 472 |
} |
| 473 |
|
| 474 |
//we didn't find a suitable type |
| 475 |
return S_FALSE; |
| 476 |
} |
| 477 |
|
| 478 |
void QPin::freeMediaType(const AM_MEDIA_TYPE &type) |
| 479 |
{ |
| 480 |
if (type.cbFormat) { |
| 481 |
::CoTaskMemFree(type.pbFormat); |
| 482 |
} |
| 483 |
if (type.pUnk) { |
| 484 |
type.pUnk->Release(); |
| 485 |
} |
| 486 |
} |
| 487 |
|
| 488 |
void QPin::freeMediaType(AM_MEDIA_TYPE *type) |
| 489 |
{ |
| 490 |
freeMediaType(*type); |
| 491 |
::CoTaskMemFree(type); |
| 492 |
} |
| 493 |
|
| 494 |
//addition |
| 495 |
|
| 496 |
PIN_DIRECTION QPin::direction() const |
| 497 |
{ |
| 498 |
return m_direction; |
| 499 |
} |
| 500 |
|
| 501 |
void QPin::setConnectedType(const AM_MEDIA_TYPE &type) |
| 502 |
{ |
| 503 |
QMutexLocker locker(&m_mutex); |
| 504 |
|
| 505 |
//1st we free memory |
| 506 |
freeMediaType(m_connectedType); |
| 507 |
|
| 508 |
m_connectedType = copyMediaType(type); |
| 509 |
} |
| 510 |
|
| 511 |
const AM_MEDIA_TYPE &QPin::connectedType() const |
| 512 |
{ |
| 513 |
QMutexLocker locker(&m_mutex); |
| 514 |
return m_connectedType; |
| 515 |
} |
| 516 |
|
| 517 |
void QPin::setConnected(IPin *pin) |
| 518 |
{ |
| 519 |
QMutexLocker locker(&m_mutex); |
| 520 |
if (pin) { |
| 521 |
pin->AddRef(); |
| 522 |
} |
| 523 |
if (m_connected) { |
| 524 |
m_connected->Release(); |
| 525 |
} |
| 526 |
m_connected = pin; |
| 527 |
} |
| 528 |
|
| 529 |
IPin *QPin::connected(bool addref) const |
| 530 |
{ |
| 531 |
QMutexLocker locker(&m_mutex); |
| 532 |
if (addref && m_connected) { |
| 533 |
m_connected->AddRef(); |
| 534 |
} |
| 535 |
return m_connected; |
| 536 |
} |
| 537 |
|
| 538 |
bool QPin::isFlushing() const |
| 539 |
{ |
| 540 |
QMutexLocker locker(&m_mutex); |
| 541 |
return m_flushing; |
| 542 |
} |
| 543 |
|
| 544 |
FILTER_STATE QPin::filterState() const |
| 545 |
{ |
| 546 |
FILTER_STATE fstate = State_Stopped; |
| 547 |
m_parent->GetState(0, &fstate); |
| 548 |
return fstate; |
| 549 |
} |
| 550 |
|
| 551 |
QVector<AM_MEDIA_TYPE> QPin::mediaTypes() const |
| 552 |
{ |
| 553 |
QMutexLocker locker(&m_mutex); |
| 554 |
return m_mediaTypes; |
| 555 |
} |
| 556 |
|
| 557 |
HRESULT QPin::setAcceptedMediaType(const AM_MEDIA_TYPE &mt) |
| 558 |
{ |
| 559 |
const QVector<AM_MEDIA_TYPE> oldMediaTypes = m_mediaTypes; |
| 560 |
m_mediaTypes = QVector<AM_MEDIA_TYPE>() << mt; |
| 561 |
|
| 562 |
HRESULT hr = S_OK; |
| 563 |
|
| 564 |
IPin *conn = connected(); |
| 565 |
if (conn) { |
| 566 |
//try to reconnect to redefine the media type |
| 567 |
conn->Disconnect(); |
| 568 |
Disconnect(); |
| 569 |
hr = Connect(conn, 0); |
| 570 |
if (FAILED(hr)) { |
| 571 |
m_mediaTypes = oldMediaTypes; |
| 572 |
Connect(conn, 0); //just redo the connection with the old media types |
| 573 |
} |
| 574 |
} |
| 575 |
return hr; |
| 576 |
} |
| 577 |
|
| 578 |
void QPin::createDefaultMemoryAllocator(ALLOCATOR_PROPERTIES *prop) |
| 579 |
{ |
| 580 |
ComPointer<IMemAllocator> alloc(CLSID_MemoryAllocator, IID_IMemAllocator); |
| 581 |
if (prop) { |
| 582 |
alloc->SetProperties(prop, 0); |
| 583 |
} |
| 584 |
setMemoryAllocator(alloc); |
| 585 |
} |
| 586 |
|
| 587 |
void QPin::setMemoryAllocator(IMemAllocator *alloc) |
| 588 |
{ |
| 589 |
QMutexLocker locker(&m_mutex); |
| 590 |
if (alloc) { |
| 591 |
alloc->AddRef(); |
| 592 |
} |
| 593 |
if (m_memAlloc) { |
| 594 |
m_memAlloc->Release(); |
| 595 |
} |
| 596 |
m_memAlloc = alloc; |
| 597 |
} |
| 598 |
|
| 599 |
IMemAllocator *QPin::memoryAllocator(bool addref) const |
| 600 |
{ |
| 601 |
QMutexLocker locker(&m_mutex); |
| 602 |
if (addref && m_memAlloc) { |
| 603 |
m_memAlloc->AddRef(); |
| 604 |
} |
| 605 |
return m_memAlloc; |
| 606 |
} |
| 607 |
|
| 608 |
AM_MEDIA_TYPE QPin::copyMediaType(const AM_MEDIA_TYPE &type) |
| 609 |
{ |
| 610 |
AM_MEDIA_TYPE ret = type; |
| 611 |
|
| 612 |
//make a deep copy here |
| 613 |
if (ret.cbFormat == 0 || ret.pbFormat == 0) { |
| 614 |
ret.cbFormat = 0; |
| 615 |
ret.pbFormat = 0; |
| 616 |
ret.formattype = GUID_NULL; |
| 617 |
} else { |
| 618 |
ret.pbFormat = reinterpret_cast<BYTE*>(::CoTaskMemAlloc(type.cbFormat)); |
| 619 |
qMemCopy(ret.pbFormat, type.pbFormat, type.cbFormat); |
| 620 |
} |
| 621 |
|
| 622 |
if (type.pUnk) { |
| 623 |
type.pUnk->AddRef(); |
| 624 |
} |
| 625 |
return ret; |
| 626 |
} |
| 627 |
|
| 628 |
|
| 629 |
} |
| 630 |
} |
| 631 |
|
| 632 |
QT_END_NAMESPACE |
