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2025-12-17 16:47:48 +00:00
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11
tools/thumbnail-helper/CMakeLists.txt Normal file
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add_library(ThumbnailHelper SHARED
src/thumb_win32.cc
src/thumb_win32_dll.cc
src/thumb_win32.def
resources/winrc.h
resources/script.rc
)
target_include_directories(ThumbnailHelper PRIVATE src resources)
target_link_libraries(ThumbnailHelper dbghelp.lib Version.lib)
set_target_properties(ThumbnailHelper PROPERTIES OUTPUT_NAME "Aya.ThumbnailHelper")

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tools/thumbnail-helper/LICENSE.txt Normal file
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
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We protect your rights with two steps: (1) copyright the software, and
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The precise terms and conditions for copying, distribution and
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GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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NO WARRANTY
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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To do so, attach the following notices to the program. It is safest
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convey the exclusion of warranty; and each file should have at least
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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
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Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
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The hypothetical commands `show w' and `show c' should show the appropriate
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You should also get your employer (if you work as a programmer) or your
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

11
tools/thumbnail-helper/README.txt Normal file
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Aya.ThumbnailHelper
===================
Thumbnail provider for Aya level files (.ayal)
`regsvr32 Aya.ThumbnailHelper.dll`
License
-------
This project is licensed under the GPLv2:
https://www.gnu.org/licenses/old-licenses/gpl-2.0.html.
Fork of blendthumb.

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tools/thumbnail-helper/resources/script.rc Normal file
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#include "winrc.h"
#if defined(__MINGW64__) || defined(__MINGW32__)
// MinGW-w64, MinGW
#if defined(__has_include) && __has_include(<winres.h>)
#include <winres.h>
#else
#include <afxres.h>
#include <winresrc.h>
#endif
#else
// MSVC, Windows SDK
#include <winres.h>
#endif
LANGUAGE LANG_ENGLISH, SUBLANG_DEFAULT
VS_VERSION_INFO VERSIONINFO
FILEVERSION VERSION_RESOURCE
PRODUCTVERSION VERSION_RESOURCE
FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
FILEFLAGS 0x1L
#else
FILEFLAGS 0x0L
#endif
FILEOS 0x4L
FILETYPE 0x2L
FILESUBTYPE 0x0L
BEGIN
BLOCK "StringFileInfo"
BEGIN
BLOCK "040904b0"
BEGIN
VALUE "CompanyName", APP_ORGANIZATION
VALUE "FileDescription", APP_DESCRIPTION
VALUE "FileVersion", VERSION_RESOURCE_STR
VALUE "LegalCopyright", APP_COPYRIGHT
VALUE "ProductName", APP_NAME
VALUE "ProductVersion", VERSION_RESOURCE_STR
END
END
BLOCK "VarFileInfo"
BEGIN
VALUE "Translation", PRODUCT_LANGUAGE, PRODUCT_CHARSET
END
END

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#pragma once
#define VERSION_MAJOR_MINOR_STR AYA_VERSION_MAJOR_STR "." AYA_VERSION_MINOR_STR
#define VERSION_MAJOR_MINOR_PATCH_STR VERSION_MAJOR_MINOR_STR "." AYA_VERSION_PATCH_STR
#ifdef AYA_VERSION_TYPE
#define VERSION_FULL_STR VERSION_MAJOR_MINOR_PATCH_STR "-" AYA_VERSION_TYPE
#else
#define VERSION_FULL_STR VERSION_MAJOR_MINOR_PATCH_STR
#endif
#define VERSION_RESOURCE AYA_VERSION_MAJOR, AYA_VERSION_MINOR, AYA_VERSION_PATCH, 0
#define VERSION_RESOURCE_STR VERSION_FULL_STR "\0"
/*
* These properties are part of VarFileInfo.
* For more information, please see: https://learn.microsoft.com/en-us/windows/win32/menurc/varfileinfo-block
*/
#define PRODUCT_LANGUAGE 0x0409 // en-US
#define PRODUCT_CHARSET 1200 // Unicode
#define APP_NAME AYA_PROJECT_NAME "\0"
#define APP_DESCRIPTION AYA_PROJECT_NAME " Thumbnail Helper\0"
#define APP_ORGANIZATION AYA_PROJECT_NAME "\0"
#define APP_COPYRIGHT AYA_PROJECT_NAME " License\0"

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tools/thumbnail-helper/src/thumb_win32.cc Normal file
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#include <algorithm>
#include <cstdint>
#include <new>
#include <shlwapi.h>
#include <string>
#include <thumbcache.h> /* for #IThumbnailProvider */
#include <vector>
#include "Wincodec.h"
#pragma comment(lib, "shlwapi.lib")
struct Thumbnail
{
std::vector<uint8_t> data;
int width;
int height;
};
/**
* This thumbnail provider implements #IInitializeWithStream to enable being
* hosted in an isolated process for robustness.
*/
class CAyaThumb
: public IInitializeWithStream
, public IThumbnailProvider
{
public:
CAyaThumb()
: _cRef(1)
, _pStream(nullptr)
{
}
virtual ~CAyaThumb()
{
if (_pStream)
{
_pStream->Release();
}
}
IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv)
{
static const QITAB qit[] = {
QITABENT(CAyaThumb, IInitializeWithStream),
QITABENT(CAyaThumb, IThumbnailProvider),
{0},
};
return QISearch(this, qit, riid, ppv);
}
IFACEMETHODIMP_(ULONG) AddRef()
{
return InterlockedIncrement(&_cRef);
}
IFACEMETHODIMP_(ULONG) Release()
{
ULONG cRef = InterlockedDecrement(&_cRef);
if (!cRef)
{
delete this;
}
return cRef;
}
/** IInitializeWithStream */
IFACEMETHODIMP Initialize(IStream* pStream, DWORD grfMode);
/** IThumbnailProvider */
IFACEMETHODIMP GetThumbnail(UINT cx, HBITMAP* phbmp, WTS_ALPHATYPE* pdwAlpha);
private:
long _cRef;
IStream* _pStream; /* provided in Initialize(). */
};
HRESULT CAyaThumb_CreateInstance(REFIID riid, void** ppv)
{
CAyaThumb* pNew = new (std::nothrow) CAyaThumb();
HRESULT hr = pNew ? S_OK : E_OUTOFMEMORY;
if (SUCCEEDED(hr))
{
hr = pNew->QueryInterface(riid, ppv);
pNew->Release();
}
return hr;
}
IFACEMETHODIMP CAyaThumb::Initialize(IStream* pStream, DWORD)
{
if (_pStream != nullptr)
{
/* Can only be initialized once. */
return E_UNEXPECTED;
}
/* Take a reference to the stream. */
return pStream->QueryInterface(&_pStream);
}
IFACEMETHODIMP CAyaThumb::GetThumbnail(UINT cx, HBITMAP* phbmp, WTS_ALPHATYPE* pdwAlpha)
{
HRESULT hr = S_FALSE;
std::vector<char> buffer;
ULONG bytesRead;
char chunk[4096];
do
{
hr = _pStream->Read(chunk, sizeof(chunk), &bytesRead);
if (SUCCEEDED(hr) && bytesRead > 0)
{
buffer.insert(buffer.end(), chunk, chunk + bytesRead);
}
} while (SUCCEEDED(hr) && bytesRead > 0);
if (FAILED(hr))
{
return hr;
}
// Find the </roblox> closing tag
const std::string endTag = "</roblox>";
auto it = std::search(buffer.begin(), buffer.end(), endTag.begin(), endTag.end());
if (it == buffer.end())
{
return E_FAIL; // Closing tag not found
}
// Move iterator past the closing tag and the null byte
std::advance(it, endTag.length() + 1);
if (it >= buffer.end())
{
return E_FAIL; // No data after the closing tag
}
// The rest is JPEG data
std::vector<unsigned char> jpegData(it, buffer.end());
// Create a WIC factory
IWICImagingFactory* pFactory = nullptr;
hr = CoCreateInstance(CLSID_WICImagingFactory, nullptr, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pFactory));
if (FAILED(hr))
{
return hr;
}
// Create a stream from the JPEG data
IWICStream* pStream = nullptr;
hr = pFactory->CreateStream(&pStream);
if (FAILED(hr))
{
pFactory->Release();
return hr;
}
hr = pStream->InitializeFromMemory(jpegData.data(), jpegData.size());
if (FAILED(hr))
{
pStream->Release();
pFactory->Release();
return hr;
}
// Create a decoder
IWICBitmapDecoder* pDecoder = nullptr;
hr = pFactory->CreateDecoderFromStream(pStream, nullptr, WICDecodeMetadataCacheOnDemand, &pDecoder);
if (FAILED(hr))
{
pStream->Release();
pFactory->Release();
return hr;
}
// Get the first frame of the image from the decoder
IWICBitmapFrameDecode* pFrame = nullptr;
hr = pDecoder->GetFrame(0, &pFrame);
if (FAILED(hr))
{
pDecoder->Release();
pStream->Release();
pFactory->Release();
return hr;
}
// Get the size of the image
UINT width, height;
hr = pFrame->GetSize(&width, &height);
if (FAILED(hr))
{
pFrame->Release();
pDecoder->Release();
pStream->Release();
pFactory->Release();
return hr;
}
UINT stride = (width * 3 + 3) & ~3;
// Create a bitmap and copy the pixels
Thumbnail thumb;
thumb.width = width;
thumb.height = height;
thumb.data.resize(height * stride);
hr = pFrame->CopyPixels(nullptr, stride, thumb.data.size(), thumb.data.data());
pFrame->Release();
pDecoder->Release();
pStream->Release();
pFactory->Release();
if (FAILED(hr))
{
return hr;
}
*phbmp = CreateBitmap(thumb.width, thumb.height, 1, 24, thumb.data.data());
if (!*phbmp)
{
return E_FAIL;
}
*pdwAlpha = WTSAT_RGB;
hr = S_OK;
return hr;
}

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EXPORTS
DllGetClassObject PRIVATE
DllCanUnloadNow PRIVATE
DllRegisterServer PRIVATE
DllUnregisterServer PRIVATE

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tools/thumbnail-helper/src/thumb_win32_dll.cc Normal file
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#include <new>
#include <objbase.h>
#include <shlobj.h> /* For #SHChangeNotify */
#include <shlwapi.h>
#include <thumbcache.h> /* For IThumbnailProvider */
extern HRESULT CAyaThumb_CreateInstance(REFIID riid, void** ppv);
#define SZ_CLSID_AYATHUMBHANDLER L"{8ABA9ABD-829D-4E87-AC2C-4A628AB78236}"
#define SZ_AYATHUMBHANDLER L"Aya Thumbnail Handler"
const CLSID CLSID_AyaThumbHandler = {0x8ABA9ABD, 0x829D, 0x4E87, {0xAC, 0x2C, 0x4A, 0x62, 0x8A, 0xB7, 0x82, 0x36}};
typedef HRESULT (*PFNCREATEINSTANCE)(REFIID riid, void** ppvObject);
struct CLASS_OBJECT_INIT
{
const CLSID* pClsid;
PFNCREATEINSTANCE pfnCreate;
};
/* Add classes supported by this module here. */
const CLASS_OBJECT_INIT c_rgClassObjectInit[] = {{&CLSID_AyaThumbHandler, CAyaThumb_CreateInstance}};
long g_cRefModule = 0;
/** Handle the DLL's module */
HINSTANCE g_hInst = nullptr;
/** Standard DLL functions. */
STDAPI_(BOOL) DllMain(HINSTANCE hInstance, DWORD dwReason, void*)
{
if (dwReason == DLL_PROCESS_ATTACH)
{
g_hInst = hInstance;
DisableThreadLibraryCalls(hInstance);
}
return TRUE;
}
STDAPI DllCanUnloadNow()
{
/* Only allow the DLL to be unloaded after all outstanding references have
* been released. */
return (g_cRefModule == 0) ? S_OK : S_FALSE;
}
void DllAddRef()
{
InterlockedIncrement(&g_cRefModule);
}
void DllRelease()
{
InterlockedDecrement(&g_cRefModule);
}
class CClassFactory : public IClassFactory
{
public:
static HRESULT CreateInstance(REFCLSID clsid, const CLASS_OBJECT_INIT* pClassObjectInits, size_t cClassObjectInits, REFIID riid, void** ppv)
{
*ppv = nullptr;
HRESULT hr = CLASS_E_CLASSNOTAVAILABLE;
for (size_t i = 0; i < cClassObjectInits; i++)
{
if (clsid == *pClassObjectInits[i].pClsid)
{
IClassFactory* pClassFactory = new (std::nothrow) CClassFactory(pClassObjectInits[i].pfnCreate);
hr = pClassFactory ? S_OK : E_OUTOFMEMORY;
if (SUCCEEDED(hr))
{
hr = pClassFactory->QueryInterface(riid, ppv);
pClassFactory->Release();
}
/* Match found. */
break;
}
}
return hr;
}
CClassFactory(PFNCREATEINSTANCE pfnCreate)
: _cRef(1)
, _pfnCreate(pfnCreate)
{
DllAddRef();
}
/** #IUnknown */
IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv)
{
static const QITAB qit[] = {QITABENT(CClassFactory, IClassFactory), {0}};
return QISearch(this, qit, riid, ppv);
}
IFACEMETHODIMP_(ULONG) AddRef()
{
return InterlockedIncrement(&_cRef);
}
IFACEMETHODIMP_(ULONG) Release()
{
long cRef = InterlockedDecrement(&_cRef);
if (cRef == 0)
{
delete this;
}
return cRef;
}
/** #IClassFactory */
IFACEMETHODIMP CreateInstance(IUnknown* punkOuter, REFIID riid, void** ppv)
{
return punkOuter ? CLASS_E_NOAGGREGATION : _pfnCreate(riid, ppv);
}
IFACEMETHODIMP LockServer(BOOL fLock)
{
if (fLock)
{
DllAddRef();
}
else
{
DllRelease();
}
return S_OK;
}
private:
~CClassFactory()
{
DllRelease();
}
long _cRef;
PFNCREATEINSTANCE _pfnCreate;
};
STDAPI DllGetClassObject(REFCLSID clsid, REFIID riid, void** ppv)
{
return CClassFactory::CreateInstance(clsid, c_rgClassObjectInit, ARRAYSIZE(c_rgClassObjectInit), riid, ppv);
}
/**
* A struct to hold the information required for a registry entry.
*/
struct REGISTRY_ENTRY
{
HKEY hkeyRoot;
PCWSTR pszKeyName;
PCWSTR pszValueName;
DWORD dwValueType;
/** These two fields could/should have been a union, but C++ */
PCWSTR pszData;
/** Only lets you initialize the first field in a union. */
DWORD dwData;
};
/**
* Creates a registry key (if needed) and sets the default value of the key.
*/
HRESULT CreateRegKeyAndSetValue(const REGISTRY_ENTRY* pRegistryEntry)
{
HKEY hKey;
HRESULT hr = HRESULT_FROM_WIN32(RegCreateKeyExW(pRegistryEntry->hkeyRoot, pRegistryEntry->pszKeyName, 0, nullptr, REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, nullptr, &hKey, nullptr));
if (SUCCEEDED(hr))
{
/* All this just to support #REG_DWORD. */
DWORD size;
DWORD data;
BYTE* lpData = (LPBYTE)pRegistryEntry->pszData;
switch (pRegistryEntry->dwValueType)
{
case REG_SZ:
size = ((DWORD)wcslen(pRegistryEntry->pszData) + 1) * sizeof(WCHAR);
break;
case REG_DWORD:
size = sizeof(DWORD);
data = pRegistryEntry->dwData;
lpData = (BYTE*)&data;
break;
default:
return E_INVALIDARG;
}
hr = HRESULT_FROM_WIN32(RegSetValueExW(hKey, pRegistryEntry->pszValueName, 0, pRegistryEntry->dwValueType, lpData, size));
RegCloseKey(hKey);
}
return hr;
}
/**
* Registers this COM server.
*/
STDAPI DllRegisterServer()
{
HRESULT hr;
WCHAR szModuleName[MAX_PATH];
if (!GetModuleFileNameW(g_hInst, szModuleName, ARRAYSIZE(szModuleName)))
{
hr = HRESULT_FROM_WIN32(GetLastError());
}
else
{
const REGISTRY_ENTRY rgRegistryEntries[] = {
/* `RootKey KeyName ValueName ValueType Data` */
{HKEY_CURRENT_USER, L"Software\\Classes\\CLSID\\" SZ_CLSID_AYATHUMBHANDLER, nullptr, REG_SZ, SZ_AYATHUMBHANDLER},
{HKEY_CURRENT_USER,
L"Software\\Classes\\CLSID"
L"\\" SZ_CLSID_AYATHUMBHANDLER L"\\InProcServer32",
nullptr, REG_SZ, szModuleName},
{HKEY_CURRENT_USER,
L"Software\\Classes\\CLSID"
L"\\" SZ_CLSID_AYATHUMBHANDLER L"\\InProcServer32",
L"ThreadingModel", REG_SZ, L"Apartment"},
{HKEY_CURRENT_USER, L"Software\\Classes\\.ayal\\", L"Treatment", REG_DWORD, 0, 0}, /* This doesn't appear to do anything. */
{HKEY_CURRENT_USER,
L"Software\\Classes\\.ayal\\ShellEx\\{e357fccd-a995-4576-b01f-"
L"234630154e96}",
nullptr, REG_SZ, SZ_CLSID_AYATHUMBHANDLER},
};
hr = S_OK;
for (int i = 0; i < ARRAYSIZE(rgRegistryEntries) && SUCCEEDED(hr); i++)
{
hr = CreateRegKeyAndSetValue(&rgRegistryEntries[i]);
}
}
if (SUCCEEDED(hr))
{
/* This tells the shell to invalidate the thumbnail cache.
* This is important because any `.ayal` files viewed before registering
* this handler would otherwise show cached blank thumbnails. */
SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, nullptr, nullptr);
}
return hr;
}
/**
* Unregisters this COM server
*/
STDAPI DllUnregisterServer()
{
HRESULT hr = S_OK;
const PCWSTR rgpszKeys[] = {L"Software\\Classes\\CLSID\\" SZ_CLSID_AYATHUMBHANDLER, L"Software\\Classes\\.ayal\\ShellEx\\{e357fccd-a995-4576-b01f-"
L"234630154e96}"};
/* Delete the registry entries. */
for (int i = 0; i < ARRAYSIZE(rgpszKeys) && SUCCEEDED(hr); i++)
{
hr = HRESULT_FROM_WIN32(RegDeleteTreeW(HKEY_CURRENT_USER, rgpszKeys[i]));
if (hr == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND))
{
/* If the registry entry has already been deleted, say S_OK. */
hr = S_OK;
}
}
return hr;
}