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mpv/loader/dshow/allocator.c

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#include "allocator.h"
#include "com.h"
#include "wine/winerror.h"
#include <stdio.h>
static int AllocatorKeeper = 0;
static inline int avm_list_size(avm_list_t* head)
{
avm_list_t* it = head;
int i = 0;
if (it)
{
for (;;)
{
i++;
it = it->next;
if (it == head)
break;
}
}
return i;
}
static inline int avm_list_print(avm_list_t* head)
{
avm_list_t* it = head;
int i = 0;
printf("Head: %p\n", head);
if (it)
{
for (;;)
{
i++;
printf("%d: member: %p next: %p prev: %p\n",
i, it->member, it->next, it->prev);
it = it->next;
if (it == head)
break;
}
}
return i;
}
static inline avm_list_t* avm_list_add_head(avm_list_t* head, void* member)
{
avm_list_t* n = (avm_list_t*) malloc(sizeof(avm_list_t));
n->member = member;
if (!head)
{
head = n;
head->prev = head;
}
n->prev = head->prev;
head->prev = n;
n->next = head;
return n;
}
static inline avm_list_t* avm_list_add_tail(avm_list_t* head, void* member)
{
avm_list_t* n = avm_list_add_head(head, member);
return (!head) ? n : head;
}
static inline avm_list_t* avm_list_del_head(avm_list_t* head)
{
avm_list_t* n = 0;
if (head)
{
if (head->next != head)
{
n = head->next;
head->prev->next = head->next;
head->next->prev = head->prev;
}
free(head);
}
return n;
}
static inline avm_list_t* avm_list_find(avm_list_t* head, void* member)
{
avm_list_t* it = head;
if (it)
{
for (;;)
{
if (it->member == member)
return it;
it = it->next;
if (it == head)
break;
}
}
return NULL;
}
static long MemAllocator_CreateAllocator(GUID* clsid, GUID* iid, void** ppv)
{
IMemAllocator* p;
int result;
if (!ppv)
return -1;
*ppv = 0;
if (memcmp(clsid, &CLSID_MemoryAllocator, sizeof(GUID)))
return -1;
p = (IMemAllocator*) MemAllocatorCreate();
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)
{
MemAllocator* me = (MemAllocator*)This;
Debug printf("MemAllocator_SetProperties(%p) called\n", This);
if (!pRequest || !pActual)
return E_INVALIDARG;
if (pRequest->cBuffers<=0 || pRequest->cbBuffer<=0)
return E_FAIL;
if (me->used_list != 0 || me->free_list != 0)
return E_FAIL;
*pActual = *pRequest;
//if (pActual->cbBuffer == 2)
// pActual->cbBuffer = 576;
me->props = *pActual;
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)
{
MemAllocator* me = (MemAllocator*)This;
int i;
Debug printf("MemAllocator_Commit(%p) called\n", This);
if (((MemAllocator*)This)->props.cbBuffer < 0)
return E_FAIL;
if (me->used_list || me->free_list)
return E_INVALIDARG;
for (i = 0; i < me->props.cBuffers; i++)
{
CMediaSample* sample = CMediaSampleCreate((IMemAllocator*)me,
me->props.cbBuffer);
if (!sample)
return E_OUTOFMEMORY;
//printf("FREEEEEEEEEEEE ADDED %p\n", sample);
me->free_list = avm_list_add_tail(me->free_list, sample);
//avm_list_print(me->free_list);
}
//printf("Added mem %p: lsz: %d %d size: %d\n", me, avm_list_size(me->free_list), me->props.cBuffers, me->props.cbBuffer);
return 0;
}
static HRESULT STDCALL MemAllocator_Decommit(IMemAllocator * This)
{
MemAllocator* me=(MemAllocator*)This;
Debug printf("MemAllocator_Decommit(%p) called\n", This);
//printf("Deleted mem %p: %d %d\n", me, me->free_list.size(), me->used_list.size());
while (me->used_list)
{
me->free_list = avm_list_add_tail(me->free_list,
(CMediaSample*) me->used_list->member);
me->used_list = avm_list_del_head(me->used_list);
}
while (me->free_list)
{
CMediaSample* sample = (CMediaSample*) me->free_list->member;
//printf("****************** Decommiting FREE %p\n", sample);
//sample->vt->Release((IUnknown*)sample);
CMediaSample_Destroy((CMediaSample*)sample);
me->free_list = avm_list_del_head(me->free_list);
}
return 0;
}
static HRESULT STDCALL MemAllocator_GetBuffer(IMemAllocator * This,
/* [out] */ IMediaSample **ppBuffer,
/* [in] */ REFERENCE_TIME *pStartTime,
/* [in] */ REFERENCE_TIME *pEndTime,
/* [in] */ DWORD dwFlags)
{
MemAllocator* me = (MemAllocator*)This;
CMediaSample* sample;
Debug printf("MemAllocator_ReleaseBuffer(%p) called %d %d\n", This,
avm_list_size(me->used_list), avm_list_size(me->free_list));
if (!me->free_list)
{
Debug printf("No samples available\n");
return E_FAIL;//should block here if no samples are available
}
sample = (CMediaSample*) me->free_list->member;
me->free_list = avm_list_del_head(me->free_list);
me->used_list = avm_list_add_tail(me->used_list, sample);
*ppBuffer = (IMediaSample*) sample;
sample->vt->AddRef((IUnknown*) sample);
if (me->new_pointer)
{
if (me->modified_sample)
me->modified_sample->ResetPointer(me->modified_sample);
sample->SetPointer(sample, me->new_pointer);
me->modified_sample = sample;
me->new_pointer = 0;
}
return 0;
}
static HRESULT STDCALL MemAllocator_ReleaseBuffer(IMemAllocator* This,
/* [in] */ IMediaSample* pBuffer)
{
avm_list_t* l;
MemAllocator* me = (MemAllocator*)This;
Debug printf("MemAllocator_ReleaseBuffer(%p) called %d %d\n", This,
avm_list_size(me->used_list), avm_list_size(me->free_list));
l = avm_list_find(me->used_list, pBuffer);
if (l)
{
CMediaSample* sample = (CMediaSample*) l->member;
if (me->modified_sample == sample)
{
me->modified_sample->ResetPointer(me->modified_sample);
me->modified_sample = 0;
}
me->used_list = avm_list_del_head(me->used_list);
me->free_list = avm_list_add_head(me->free_list, sample);
//printf("****************** RELEASED OK %p %p\n", me->used_list, me->free_list);
return 0;
}
Debug printf("MemAllocator_ReleaseBuffer(%p) releasing unknown buffer!!!! %p\n", This, pBuffer);
return E_FAIL;
}
static void MemAllocator_SetPointer(MemAllocator* This, char* pointer)
{
This->new_pointer = pointer;
}
static void MemAllocator_ResetPointer(MemAllocator* This)
{
if (This->modified_sample)
{
This->modified_sample->ResetPointer(This->modified_sample);
This->modified_sample = 0;
}
}
void MemAllocator_Destroy(MemAllocator* This)
{
Debug printf("MemAllocator_Destroy(%p) called (%d, %d)\n", This, This->refcount, AllocatorKeeper);
if (--AllocatorKeeper == 0)
UnregisterComClass(&CLSID_MemoryAllocator, MemAllocator_CreateAllocator);
free(This->vt);
free(This);
}
IMPLEMENT_IUNKNOWN(MemAllocator)
MemAllocator* MemAllocatorCreate()
{
MemAllocator* This = (MemAllocator*) malloc(sizeof(MemAllocator));
if (!This)
return NULL;
Debug printf("MemAllocatorCreate() called -> %p\n", This);
This->refcount = 1;
This->props.cBuffers = 1;
This->props.cbBuffer = 65536; /* :/ */
This->props.cbAlign = This->props.cbPrefix = 0;
This->vt = (IMemAllocator_vt*) malloc(sizeof(IMemAllocator_vt));
if (!This->vt)
{
free(This);
return NULL;
}
This->vt->QueryInterface = MemAllocator_QueryInterface;
This->vt->AddRef = MemAllocator_AddRef;
This->vt->Release = MemAllocator_Release;
This->vt->SetProperties = MemAllocator_SetProperties;
This->vt->GetProperties = MemAllocator_GetProperties;
This->vt->Commit = MemAllocator_Commit;
This->vt->Decommit = MemAllocator_Decommit;
This->vt->GetBuffer = MemAllocator_GetBuffer;
This->vt->ReleaseBuffer = MemAllocator_ReleaseBuffer;
This->SetPointer = MemAllocator_SetPointer;
This->ResetPointer = MemAllocator_ResetPointer;
This->modified_sample = 0;
This->new_pointer = 0;
This->used_list = 0;
This->free_list = 0;
This->interfaces[0]=IID_IUnknown;
This->interfaces[1]=IID_IMemAllocator;
if (AllocatorKeeper++ == 0)
RegisterComClass(&CLSID_MemoryAllocator, MemAllocator_CreateAllocator);
return This;
}