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#include "allocator.h"
#include "com.h"
#include "wine/winerror.h"
#include <stdio.h>
//#undef Debug
//#define Debug
using namespace std;
class AllocatorKeeper
{
public:
AllocatorKeeper()
{
RegisterComClass(&CLSID_MemoryAllocator, MemAllocator::CreateAllocator);
}
~AllocatorKeeper()
{
UnregisterComClass(&CLSID_MemoryAllocator, MemAllocator::CreateAllocator);
}
};
static AllocatorKeeper keeper;
GUID MemAllocator::interfaces[]=
{
IID_IUnknown,
IID_IMemAllocator,
};
IMPLEMENT_IUNKNOWN(MemAllocator)
long MemAllocator::CreateAllocator(GUID* clsid, GUID* iid, void** ppv)
{
if(!ppv)return -1;
*ppv=0;
if(memcmp(clsid, &CLSID_MemoryAllocator, sizeof(GUID)))
return -1;
IMemAllocator* p=new MemAllocator;
int result=p->vt->QueryInterface((IUnknown*)p, iid, ppv);
p->vt->Release((IUnknown*)p);
return result;
}
static HRESULT STDCALL MemAllocator_SetProperties(IMemAllocator * This,
/* [in] */ ALLOCATOR_PROPERTIES *pRequest,
/* [out] */ ALLOCATOR_PROPERTIES *pActual)
{
Debug printf("MemAllocator_SetProperties() called\n");
if (!pRequest || !pActual)
return E_INVALIDARG;
if (pRequest->cBuffers<=0 || pRequest->cbBuffer<=0)
return E_FAIL;
MemAllocator* me = (MemAllocator*)This;
if (me->used_list.size() || me->free_list.size())
return E_FAIL;
me->props = *pRequest;
*pActual = *pRequest;
return 0;
}
static HRESULT STDCALL MemAllocator_GetProperties(IMemAllocator * This,
/* [out] */ ALLOCATOR_PROPERTIES *pProps)
{
Debug printf("MemAllocator_GetProperties(%p) called\n", This);
if (!pProps)
return E_INVALIDARG;
if (((MemAllocator*)This)->props.cbBuffer<0)
return E_FAIL;
*pProps=((MemAllocator*)This)->props;
return 0;
}
static HRESULT STDCALL MemAllocator_Commit(IMemAllocator * This)
{
Debug printf("MemAllocator_Commit(%p) called\n", This);
MemAllocator* me=(MemAllocator*)This;
if (((MemAllocator*)This)->props.cbBuffer < 0)
return E_FAIL;
if (me->used_list.size() || me->free_list.size())
return E_INVALIDARG;
for(int i = 0; i<me->props.cBuffers; i++)
me->free_list.push_back(new CMediaSample(me, me->props.cbBuffer));
return 0;
}
static HRESULT STDCALL MemAllocator_Decommit(IMemAllocator * This)
{
Debug printf("MemAllocator_Decommit(%p) called\n", This);
MemAllocator* me=(MemAllocator*)This;
list<CMediaSample*>::iterator it;
for(it=me->free_list.begin(); it!=me->free_list.end(); it++)
delete *it;
for(it=me->used_list.begin(); it!=me->used_list.end(); it++)
delete *it;
me->free_list.clear();
me->used_list.clear();
return 0;
}
static HRESULT STDCALL MemAllocator_GetBuffer(IMemAllocator * This,
/* [out] */ IMediaSample **ppBuffer,
/* [in] */ REFERENCE_TIME *pStartTime,
/* [in] */ REFERENCE_TIME *pEndTime,
/* [in] */ DWORD dwFlags)
{
Debug printf("MemAllocator_GetBuffer(%p) called\n", This);
MemAllocator* me = (MemAllocator*)This;
if (me->free_list.size() == 0)
{
Debug printf("No samples available\n");
return E_FAIL;//should block here if no samples are available
}
list<CMediaSample*>::iterator it = me->free_list.begin();
me->used_list.push_back(*it);
*ppBuffer = *it;
(*ppBuffer)->vt->AddRef((IUnknown*)*ppBuffer);
if (me->new_pointer)
{
if(me->modified_sample)
me->modified_sample->ResetPointer();
(*it)->SetPointer(me->new_pointer);
me->modified_sample=*it;
me->new_pointer = 0;
}
me->free_list.remove(*it);
return 0;
}
static HRESULT STDCALL MemAllocator_ReleaseBuffer(IMemAllocator * This,
/* [in] */ IMediaSample *pBuffer)
{
Debug printf("MemAllocator_ReleaseBuffer(%p) called\n", This);
MemAllocator* me = (MemAllocator*)This;
list<CMediaSample*>::iterator it;
for (it = me->used_list.begin(); it != me->used_list.end(); it++)
if (*it == pBuffer)
{
me->used_list.erase(it);
me->free_list.push_back((CMediaSample*)pBuffer);
return 0;
}
Debug printf("Releasing unknown buffer\n");
return E_FAIL;
}
MemAllocator::MemAllocator()
{
Debug printf("MemAllocator::MemAllocator() called\n");
vt = new IMemAllocator_vt;
vt->QueryInterface = QueryInterface;
vt->AddRef = AddRef;
vt->Release = Release;
vt->SetProperties = MemAllocator_SetProperties;
vt->GetProperties = MemAllocator_GetProperties;
vt->Commit = MemAllocator_Commit;
vt->Decommit = MemAllocator_Decommit;
vt->GetBuffer = MemAllocator_GetBuffer;
vt->ReleaseBuffer = MemAllocator_ReleaseBuffer;
refcount = 1;
props.cBuffers = 1;
props.cbBuffer = 65536; /* :/ */
props.cbAlign = props.cbPrefix = 0;
new_pointer=0;
modified_sample=0;
}
MemAllocator::~MemAllocator()
{
Debug printf("MemAllocator::~MemAllocator() called\n");
delete vt;
}
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