winamp/Src/devices/deviceIconStore.cpp

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2024-09-24 12:54:57 +00:00
#include "main.h"
#include "./deviceIconStore.h"
#include <strsafe.h>
DeviceIconStore::DeviceIconStore()
: ref(1), base(NULL)
{
InitializeCriticalSection(&lock);
}
DeviceIconStore::~DeviceIconStore()
{
RemoveAll();
String_Free(base);
DeleteCriticalSection(&lock);
}
HRESULT DeviceIconStore::CreateInstance(DeviceIconStore **instance)
{
if (NULL == instance)
return E_POINTER;
*instance = new DeviceIconStore();
if (NULL == *instance)
return E_OUTOFMEMORY;
return S_OK;
}
size_t DeviceIconStore::AddRef()
{
return InterlockedIncrement((LONG*)&ref);
}
size_t DeviceIconStore::Release()
{
if (0 == ref)
return ref;
LONG r = InterlockedDecrement((LONG*)&ref);
if (0 == r)
delete(this);
return r;
}
int DeviceIconStore::QueryInterface(GUID interface_guid, void **object)
{
if (NULL == object) return E_POINTER;
if (IsEqualIID(interface_guid, IFC_DeviceIconStore))
*object = static_cast<ifc_deviceiconstore*>(this);
else
{
*object = NULL;
return E_NOINTERFACE;
}
if (NULL == *object)
return E_UNEXPECTED;
AddRef();
return S_OK;
}
void DeviceIconStore::Lock()
{
EnterCriticalSection(&lock);
}
void DeviceIconStore::Unlock()
{
LeaveCriticalSection(&lock);
}
HRESULT DeviceIconStore::Add(const wchar_t *path, unsigned int width, unsigned int height, BOOL replaceExisting)
{
if (FALSE != IS_STRING_EMPTY(path))
return E_INVALIDARG;
if(width < 1)
width = 1;
if(height < 1)
height = 1;
HRESULT hr = S_FALSE;
Lock();
size_t index = list.size();
while(index--)
{
Record *record = &list[index];
if (width == record->width &&
height == record->height)
{
if (FALSE == replaceExisting)
hr = E_FAIL;
else
{
wchar_t *pathCopy;
pathCopy = String_Duplicate(path);
if (NULL == pathCopy)
hr = E_OUTOFMEMORY;
else
{
record->path = pathCopy;
hr = S_OK;
}
}
break;
}
}
if (S_FALSE == hr)
{
Record newRecord;
newRecord.path = String_Duplicate(path);
if (NULL == newRecord.path)
hr = E_OUTOFMEMORY;
else
{
newRecord.width = width;
newRecord.height = height;
list.push_back(newRecord);
hr = S_OK;
}
}
Unlock();
return hr;
}
HRESULT DeviceIconStore::Remove(unsigned int width, unsigned int height)
{
HRESULT hr;
size_t index;
Record *record;
if(width < 1)
width = 1;
if(height < 1)
height = 1;
hr = S_FALSE;
Lock();
index = list.size();
while(index--)
{
record = &list[index];
if (record->width == width &&
record->height == height)
{
String_Free(record->path);
list.erase(list.begin() + index);
hr = S_OK;
break;
}
}
Unlock();
return hr;
}
HRESULT DeviceIconStore::RemovePath(const wchar_t *path)
{
HRESULT hr;
size_t index;
Record *record;
if (FALSE != IS_STRING_EMPTY(path))
return E_INVALIDARG;
hr = S_FALSE;
Lock();
index = list.size();
while(index--)
{
record = &list[index];
if(CSTR_EQUAL == CompareStringW(CSTR_INVARIANT, NORM_IGNORECASE, record->path, -1, path, -1))
{
String_Free(record->path);
list.erase(list.begin() + index);
hr = S_OK;
}
}
Unlock();
return hr;
}
HRESULT DeviceIconStore::RemoveAll()
{
size_t index;
Record *record;
Lock();
index = list.size();
while(index--)
{
record = &list[index];
String_Free(record->path);
}
list.clear();
Unlock();
return S_OK;
}
HRESULT DeviceIconStore::Get(wchar_t *buffer, size_t bufferMax, unsigned int width, unsigned int height)
{
HRESULT hr;
Record *record;
const wchar_t *path;
size_t index;
double widthDbl, heightDbl;
double scaleMin, scaleHorz, scaleVert;
if (NULL == buffer)
return E_POINTER;
if (width < 1)
width = 1;
if (height < 1)
height = 1;
path = NULL;
widthDbl = width;
heightDbl = height;
Lock();
index = list.size();
if (index > 0)
{
record = &list[--index];
scaleHorz = widthDbl/record->width;
scaleVert = heightDbl/record->height;
scaleMin = (scaleHorz < scaleVert) ? scaleHorz : scaleVert;
path = record->path;
if (1.0 != scaleMin)
{
scaleMin = fabs(1.0 - scaleMin);
while(index--)
{
record = &list[index];
scaleHorz = widthDbl/record->width;
scaleVert = heightDbl/record->height;
if (scaleHorz > scaleVert)
scaleHorz = scaleVert;
if (1.0 == scaleHorz)
{
path = record->path;
break;
}
scaleHorz = fabs(1.0 - scaleHorz);
if (scaleHorz < scaleMin)
{
scaleMin = scaleHorz;
path = record->path;
}
}
}
}
if (NULL == path)
hr = E_FAIL;
else
hr = GetFullPath(buffer, bufferMax, path);
Unlock();
return hr;
}
HRESULT DeviceIconStore::GetExact(wchar_t *buffer, size_t bufferMax, unsigned int width, unsigned int height)
{
HRESULT hr;
size_t index;
Record *record;
if (NULL == buffer)
return E_POINTER;
if(width < 1)
width = 1;
if(height < 1)
height = 1;
hr = E_FAIL;
Lock();
index = list.size();
while(index--)
{
record = &list[index];
if (record->width == width &&
record->height == height)
{
hr = GetFullPath(buffer, bufferMax, record->path);
break;
}
}
Unlock();
return hr;
}
HRESULT DeviceIconStore::SetBasePath(const wchar_t *path)
{
HRESULT hr;
Lock();
String_Free(base);
base = String_Duplicate(path);
if (NULL == base && NULL != path)
hr = E_OUTOFMEMORY;
else
hr = S_OK;
Unlock();
return hr;
}
HRESULT DeviceIconStore::GetBasePath(wchar_t *buffer, size_t bufferMax)
{
HRESULT hr;
if (NULL == buffer)
return E_POINTER;
Lock();
if (0 == String_CopyTo(buffer, base, bufferMax) &&
FALSE == IS_STRING_EMPTY(base))
{
hr = E_FAIL;
}
else
hr = S_OK;
Unlock();
return hr;
}
HRESULT DeviceIconStore::Clone(ifc_deviceiconstore **instance)
{
HRESULT hr;
DeviceIconStore *clone;
if (NULL == instance)
return E_POINTER;
hr = DeviceIconStore::CreateInstance(&clone);
if (FAILED(hr))
return hr;
Lock();
clone->base = String_Duplicate(base);
if (NULL == clone->base && NULL != base)
hr = E_OUTOFMEMORY;
else
{
size_t index, count;
Record target;
const Record *source;
count = list.size();
for(index = 0; index < count; index++)
{
source = &list[index];
target.path = String_Duplicate(source->path);
if (NULL == target.path)
{
hr = E_OUTOFMEMORY;
break;
}
else
{
target.width = source->width;
target.height = source->height;
clone->list.push_back(target);
}
}
}
Unlock();
if (FAILED(hr))
clone->Release();
else
*instance = clone;
return hr;
}
HRESULT DeviceIconStore::Enumerate(EnumeratorCallback callback, void *user)
{
size_t index, count;
wchar_t buffer[MAX_PATH*2] = {0};
Record *record;
if (NULL == callback)
return E_POINTER;
Lock();
count = list.size();
for(index = 0; index < count; index++)
{
record = &list[index];
if (SUCCEEDED(GetFullPath(buffer, ARRAYSIZE(buffer), record->path)))
{
if (FALSE == callback(buffer, record->width, record->height, user))
{
break;
}
}
}
Unlock();
return S_OK;
}
HRESULT DeviceIconStore::GetFullPath(wchar_t *buffer, size_t bufferMax, const wchar_t *path)
{
HRESULT hr;
if (NULL == buffer)
return E_POINTER;
if (FALSE != IS_STRING_EMPTY(path))
return E_INVALIDARG;
Lock();
if (FALSE == PathIsRelative(path) ||
FALSE != IS_STRING_EMPTY(base))
{
if (0 == String_CopyTo(buffer, path, bufferMax))
hr = E_OUTOFMEMORY;
else
hr = S_OK;
}
else
{
if (NULL == PathCombine(buffer, base, path))
hr = E_FAIL;
else
hr = S_OK;
}
Unlock();
return hr;
}
#define CBCLASS DeviceIconStore
START_DISPATCH;
CB(ADDREF, AddRef)
CB(RELEASE, Release)
CB(QUERYINTERFACE, QueryInterface)
CB(API_ADD, Add)
CB(API_REMOVE, Remove)
CB(API_REMOVEPATH, RemovePath)
CB(API_REMOVEALL, RemoveAll)
CB(API_GET, Get)
CB(API_GETEXACT, GetExact)
CB(API_SETBASEPATH, SetBasePath)
CB(API_GETBASEPATH, GetBasePath)
CB(API_CLONE, Clone)
CB(API_ENUMERATE, Enumerate)
END_DISPATCH;
#undef CBCLASS