void* CObjectMemoryPoolChunk::Allocate(size_t size)
{
_ASSERT(size > 0);
// align the size up to size header (usually 8 bytes)
size += sizeof(SHeader)-1;
if ( sizeof(SHeader) & (sizeof(SHeader)-1) ) {
// size of header is not power of 2
size -= size % sizeof(SHeader);
}
else {
// size of header is power of 2 -> we can use bit operation
size &= ~(sizeof(SHeader)-1);
}
// calculate new pointers
SHeader* header = reinterpret_cast<SHeader*>(m_CurPtr);
char* ptr = reinterpret_cast<char*>(header + 1);
char* end = ptr + size;
// check if space is enough
if ( end > m_EndPtr ) {
return 0;
}
// initialize the header
header->m_ChunkPtr = this;
header->m_Magic = SHeader::eMagicAllocated;
// all checks are done, now we update chunk
_ASSERT(m_CurPtr == header);
m_CurPtr = end;
// increment object counter in this chunk
IncrementObjectCount();
return ptr;
}
CGeometricMediaSource::CGeometricMediaSource(void)
: OpQueue<CGeometricMediaSource, CSourceOperation>(_critSec.m_criticalSection)
, _cRef(1)
, _eSourceState(SourceState_Invalid)
, _flRate(1.0f)
{
auto module = ::Microsoft::WRL::GetModuleBase();
if (module != nullptr)
{
module->IncrementObjectCount();
}
}
CMPEG1Stream::CMPEG1Stream(CMPEG1Source *pSource, IMFStreamDescriptor *pSD) :
m_cRef(1),
m_state(STATE_STOPPED),
m_fActive(false),
m_fEOS(false),
m_flRate(1.0f),
m_spSource(pSource),
m_spStreamDescriptor(pSD)
{
auto module = ::Microsoft::WRL::GetModuleBase();
if (module != nullptr)
{
module->IncrementObjectCount();
}
assert(pSource != nullptr);
assert(pSD != nullptr);
}
