// cf. http://stackoverflow.com/questions/4598872/creating-hbitmap-from-memory-buffer/4616394#4616394
Bitmap *BitmapFromData(const char *data, size_t len)
{
ImgFormat format = GfxFormatFromData(data, len);
if (Img_TGA == format)
return tga::ImageFromData(data, len);
if (Img_WebP == format)
return webp::ImageFromData(data, len);
if (Img_JP2 == format)
return fitz::ImageFromData(data, len);
if (Img_JPEG == format && JpegUsesArithmeticCoding(data, len))
return fitz::ImageFromData(data, len);
ScopedComPtr<IStream> stream(CreateStreamFromData(data, len));
if (!stream)
return NULL;
if (Img_JXR == format)
return WICDecodeImageFromStream(stream);
Bitmap *bmp = Bitmap::FromStream(stream);
if (bmp && bmp->GetLastStatus() != Ok) {
delete bmp;
bmp = NULL;
}
// GDI+ under Windows XP sometimes fails to extract JPEG image dimensions
if (bmp && Img_JPEG == format && (0 == bmp->GetWidth() || 0 == bmp->GetHeight())) {
delete bmp;
bmp = fitz::ImageFromData(data, len);
}
return bmp;
}
// cf. http://stackoverflow.com/questions/4598872/creating-hbitmap-from-memory-buffer/4616394#4616394
Bitmap *BitmapFromData(const char *data, size_t len)
{
ImgFormat format = GfxFormatFromData(data, len);
if (Img_TGA == format)
return tga::ImageFromData(data, len);
ScopedComPtr<IStream> stream(CreateStreamFromData(data, len));
if (!stream)
return NULL;
if (Img_JXR == format)
return WICDecodeImageFromStream(stream);
Bitmap *bmp = Bitmap::FromStream(stream);
if (bmp && bmp->GetLastStatus() != Ok) {
delete bmp;
bmp = NULL;
}
// GDI+ under Windows XP sometimes fails to extract JPEG image dimensions
if (bmp && Img_JPEG == format && 0 == bmp->GetWidth() && 0 == bmp->GetHeight()) {
delete bmp;
LARGE_INTEGER zero = { 0 };
stream->Seek(zero, STREAM_SEEK_SET, NULL);
bmp = WICDecodeImageFromStream(stream);
}
return bmp;
}
/********************************************************************
GdipBitmapFromFile - read a GDI+ image from a file.
********************************************************************/
extern "C" HRESULT DAPI GdipBitmapFromFile(
__in_z LPCWSTR wzFileName,
__out Bitmap **ppBitmap
)
{
HRESULT hr = S_OK;
Bitmap *pBitmap = NULL;
Status gs = Ok;
ExitOnNull(ppBitmap, hr, E_INVALIDARG, "Invalid null wzFileName");
pBitmap = Bitmap::FromFile(wzFileName);
ExitOnNull(pBitmap, hr, E_OUTOFMEMORY, "Failed to allocate bitmap from file.");
gs = pBitmap->GetLastStatus();
ExitOnGdipFailure(gs, hr, "Failed to load bitmap from file: %ls", wzFileName);
*ppBitmap = pBitmap;
pBitmap = NULL;
LExit:
if (pBitmap)
{
delete pBitmap;
}
return hr;
}
// 读取图片(从文件读)
BOOL LoadBitmapFromFile(const CString strPathFile, CBitmap &bitmap, CSize &size)
{
HBITMAP hBitmap = NULL;
#ifdef _UNICODE
Bitmap* pBitmap = Bitmap::FromFile(strPathFile);
#else
Bitmap* pBitmap = Bitmap::FromFile(CEncodingUtil::AnsiToUnicode(strPathFile));
#endif
Status status = pBitmap->GetLastStatus();
if(Ok == status)
{
status = pBitmap->GetHBITMAP(Color(0,0,0), &hBitmap);
if(Ok == status)
{
if(bitmap.m_hObject != NULL)
{
bitmap.Detach();
}
bitmap.Attach(hBitmap);
BITMAP bmInfo;
::GetObject( bitmap.m_hObject, sizeof(BITMAP), &bmInfo );
size.cx = bmInfo.bmWidth;
size.cy = bmInfo.bmHeight;
delete pBitmap;
return TRUE;
}
}
return FALSE;
}
HBITMAP loadImageFromBuffer(const void* buf, unsigned int size, HWND hWnd, const BOOL& keepAspect, const BOOL& resize)
{
if (!buf) {
return NULL;
}
if (!bUseGdip) {
return loadPNGFromBuffer(buf, size, hWnd, keepAspect, resize);
}
HGLOBAL hBuffer = ::GlobalAlloc(GMEM_MOVEABLE, size);
if (!hBuffer) {
return NULL;
}
Bitmap* pBitmap = NULL;
Status stat;
void* pBuffer = ::GlobalLock(hBuffer);
if (pBuffer)
{
memcpy(pBuffer, buf, size);
IStream* pStream = NULL;
if (::CreateStreamOnHGlobal(hBuffer, FALSE, &pStream) == S_OK) {
// create a new Image object based on pStream
pBitmap = Bitmap::FromStream(pStream);
stat = pBitmap->GetLastStatus();
pStream->Release();
}
::GlobalUnlock(hBuffer);
}
::GlobalFree(hBuffer);
if (stat != Ok) {
if (pBitmap) {
delete pBitmap;
}
return NULL;
}
HBITMAP hBitmap = NULL;
pBitmap->GetHBITMAP(color, &hBitmap);
if (resize) {
hBitmap = resizeBitmap(hWnd, hBitmap, pBitmap->GetWidth(), pBitmap->GetHeight(), keepAspect);
}
if (pBitmap) {
delete pBitmap;
}
return hBitmap;
}
// 读取图片(从资源读)
BOOL LoadBitmapFromIDResource(UINT nID, CBitmap &bitmap, CSize &size, CString strType)
{
HINSTANCE hInst = AfxGetResourceHandle();
HRSRC hRsrc = ::FindResource (hInst,MAKEINTRESOURCE(nID), strType);
if (!hRsrc)
{
return FALSE;
}
DWORD len = SizeofResource(hInst, hRsrc);
BYTE* lpRsrc = (BYTE*)LoadResource(hInst, hRsrc);
if (!lpRsrc)
{
return FALSE;
}
HGLOBAL m_hMem = GlobalAlloc(GMEM_FIXED, len);
BYTE* pmem = (BYTE*)GlobalLock(m_hMem);
memcpy(pmem,lpRsrc,len);
IStream* pstm;
CreateStreamOnHGlobal(m_hMem,FALSE,&pstm);
Bitmap* pBitmap = Gdiplus::Bitmap::FromStream(pstm);
GlobalUnlock(m_hMem);
GlobalFree(m_hMem);
pstm->Release();
FreeResource(lpRsrc);
HBITMAP hBitmap = NULL;
Status status = pBitmap->GetLastStatus();
if(Ok == status)
{
status = pBitmap->GetHBITMAP(Color(0,0,0), &hBitmap);
delete pBitmap;
if(Ok == status)
{
if(bitmap.m_hObject != NULL)
{
bitmap.Detach();
}
bitmap.Attach(hBitmap);
BITMAP bmInfo;
::GetObject( bitmap.m_hObject, sizeof(BITMAP), &bmInfo );
size.cx = bmInfo.bmWidth;
size.cy = bmInfo.bmHeight;
return TRUE;
}
}
return FALSE;
}
// 读取图标(从内存中加载)
BOOL LoadIconFromMem(BYTE* pByte, DWORD dwSize, HICON &hIcon)
{
// 根据文件大小分配HGLOBAL内存
HGLOBAL hGlobal = GlobalAlloc( GMEM_MOVEABLE | GMEM_NODISCARD, dwSize );
if ( !hGlobal )
{
TRACE( _T( "Load (file): Error allocating memory\n" ) );
return FALSE;
};
char *pData = reinterpret_cast<char*>(GlobalLock(hGlobal));
if ( !pData )
{
TRACE( _T( "Load (file): Error locking memory\n" ) );
GlobalFree( hGlobal );
return FALSE;
};
// 将文件内容读到HGLOBAL内存中
memcpy(pData, pByte, dwSize);
GlobalUnlock( hGlobal );
// 利用hGlobal内存中的数据创建stream
IStream *pStream = NULL;
if ( CreateStreamOnHGlobal( hGlobal, TRUE, &pStream ) != S_OK )
{
return FALSE;
}
Bitmap* pBitmap = Gdiplus::Bitmap::FromStream(pStream);
// 要加上这一句，否则由GlobalAlloc得来的hGlobal内存没有被释放，导致内存泄露，由于
// CreateStreamOnHGlobal第二个参数被设置为TRUE，所以调用pStream->Release()会自动
// 将hGlobal内存（参见msdn对CreateStreamOnHGlobal的说明）
pStream->Release();
HBITMAP hBitmap = NULL;
Status status = pBitmap->GetLastStatus();
if(Ok == status)
{
status = pBitmap->GetHICON(&hIcon);
delete pBitmap;
if(Ok == status)
{
return TRUE;
}
}
return FALSE;
}
int SSkinGif::LoadFromFile( LPCTSTR pszFileName )
{
Bitmap *pImg = Bitmap::FromFile(S_CT2W(pszFileName));
if(!pImg) return 0;
if(pImg->GetLastStatus() != Gdiplus::Ok)
{
delete pImg;
return 0;
}
LoadFromGdipImage(pImg);
delete pImg;
return m_nFrames;
}
LIBELCBASEUI_API BOOL LoadImageFromBuffer(LPBYTE lpBuffer, int cbBuffer, CBitmap* pBitmap, CSize& size)
{
AFX_MANAGE_STATE(AfxGetStaticModuleState());
if (!lpBuffer || cbBuffer <= 0 || !pBitmap)
return FALSE;
IStream* pstm = NULL;
Bitmap *pImage = NULL;
BOOL bSuccessful = FALSE;
PBYTE pMem = NULL;
HGLOBAL hMem = NULL;
do
{
hMem = GlobalAlloc(GMEM_FIXED, cbBuffer);
pMem = (BYTE*)GlobalLock(hMem);
memcpy(pMem, lpBuffer, cbBuffer);
CreateStreamOnHGlobal(hMem, FALSE, &pstm);
pImage = Bitmap::FromStream(pstm);
if (!pImage || pImage->GetLastStatus() != Ok)
break;
HBITMAP hBitmap = NULL;
pImage->GetHBITMAP(Color::White, &hBitmap);
pBitmap->DeleteObject();
if (!pBitmap->Attach(hBitmap))
break;
BITMAP bm;
GetObject(pBitmap->m_hObject, sizeof(bm), &bm);
size.cx = pImage->GetWidth();
size.cy = pImage->GetHeight();
bSuccessful = TRUE;
} while (0);
if (hMem)
GlobalUnlock(hMem);
if (pstm)
pstm->Release();
if (pImage)
delete pImage;
return bSuccessful;
}
Bitmap* CExampleDemoDlg::ReadBitmap(string path)
{
const char* szName = path.c_str();
WCHAR wstr[1000];
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, szName, -1, wstr, 1000);
Bitmap* pInImage = Bitmap::FromFile(wstr);
if (pInImage->GetLastStatus() == -1)
{
SAFE_DELETE(pInImage);
return NULL;
}
return pInImage;
}
vector<Bitmap*> CExampleDemoDlg::LoadTemplateImg(string filesrc)
{
vector<Bitmap*> tempplate;
vector<string>filepathname;
ScanDirectory(filesrc, ".jpg", filepathname);//filesrc是文件夹名字
//std::sort(filepathname.begin(),filepathname.end());
for (int i = 0; i < filepathname.size(); i++)
{
string image = filesrc+"\\"+ filepathname[i];
std::wstring widestr = std::wstring(image.begin(), image.end());
Bitmap* pInImage = Bitmap::FromFile(widestr.c_str());
if (pInImage->GetLastStatus() == -1)
{
SAFE_DELETE(pInImage);
continue;
}
Bitmap* img = pInImage->Clone(0, 0, pInImage->GetWidth(), pInImage->GetHeight(), PixelFormat32bppARGB);
tempplate.push_back(img);
}
return tempplate;
}
BOOL GDImage::_LoadImage( const WCHAR *pImageFilename )
{
if ( m_filename == std::wstring(pImageFilename ? pImageFilename : L"") )
{
return true;
}
if ( m_pImage != NULL )
{
m_filename.clear();
delete m_pImage;
m_pImage = NULL;
}
if ( pImageFilename == NULL )
{
return TRUE;
}
// Try to laod the file if it exists
//Bitmap *pNewImage = Bitmap::FromFile( pImageFilename );
Bitmap *pNewImage = new Bitmap( pImageFilename );
Status loadStatus = pNewImage->GetLastStatus();
if ( loadStatus != Ok )
{
// Failed to laod image
delete pNewImage;
return FALSE;
}
m_filename = pImageFilename;
m_pImage = pNewImage;
return TRUE;
}
/********************************************************************
GdipBitmapFromResource - read a GDI+ image out of a resource stream
********************************************************************/
extern "C" HRESULT DAPI GdipBitmapFromResource(
__in_opt HINSTANCE hinst,
__in_z LPCSTR szId,
__out Bitmap **ppBitmap
)
{
HRESULT hr = S_OK;
LPVOID pvData = NULL;
DWORD cbData = 0;
HGLOBAL hGlobal = NULL;;
LPVOID pv = NULL;
IStream *pStream = NULL;
Bitmap *pBitmap = NULL;
Status gs = Ok;
hr = ResReadData(hinst, szId, &pvData, &cbData);
ExitOnFailure(hr, "Failed to load GDI+ bitmap from resource.");
// Have to copy the fixed resource data into moveable (heap) memory
// since that's what GDI+ expects.
hGlobal = ::GlobalAlloc(GMEM_MOVEABLE, cbData);
ExitOnNullWithLastError(hGlobal, hr, "Failed to allocate global memory.");
pv = ::GlobalLock(hGlobal);
ExitOnNullWithLastError(pv, hr, "Failed to lock global memory.");
memcpy(pv, pvData, cbData);
::GlobalUnlock(pv); // no point taking any more memory than we have already
pv = NULL;
hr = ::CreateStreamOnHGlobal(hGlobal, TRUE, &pStream);
ExitOnFailure(hr, "Failed to allocate stream from global memory.");
hGlobal = NULL; // we gave the global memory to the stream object so it will close it
pBitmap = Bitmap::FromStream(pStream);
ExitOnNull(pBitmap, hr, E_OUTOFMEMORY, "Failed to allocate bitmap from stream.");
gs = pBitmap->GetLastStatus();
ExitOnGdipFailure(gs, hr, "Failed to load bitmap from stream.");
*ppBitmap = pBitmap;
pBitmap = NULL;
LExit:
if (pBitmap)
{
delete pBitmap;
}
ReleaseObject(pStream);
if (pv)
{
::GlobalUnlock(pv);
}
if (hGlobal)
{
::GlobalFree(hGlobal);
}
return hr;
}
//----------------------------------------------------------------------------------------------------------------------
// DO IMAGE LIST
//----------------------------------------------------------------------------------------------------------------------
void cListView :: do_image_list ( const cFigViewItemList * pList )
{
mojo::cPtI IconSize = get_icon_size ();
int iDimX = IconSize.x;
int iDimY = IconSize.y;
HIMAGELIST hIL = ImageList_Create ( iDimX, iDimY, LR_CREATEDIBSECTION | ILC_COLOR32, pList->qty(), 1 );
//------------------------------------------
// LOAD DEFAULT IMAGES
//------------------------------------------
const int * aiBitmap = default_bitmap_ids ();
for ( int i = 0; aiBitmap[i]; i++ )
{
HANDLE hBitmap = LoadImage ( g_hInstance, MAKEINTRESOURCE ( aiBitmap[i] ), IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION );
ImageList_Add ( hIL, (HBITMAP) hBitmap, NULL );
}
int iItemIndex = 0;
for ( cFigViewItem * p = pList->pHead; p; p = p->pNext, iItemIndex++ )
{
bool bLoadedFromFile = false;
int iImageIndex = 0;
//-------------------------------
// TRY TO LOAD IMAGE FROM FILE
//-------------------------------
if ( p->sIconPath.len() )
{
if ( ! file_exists ( p->sIconPath.cstr() ) )
{
mojo::put_ad_lib_memo ( mojo::cMemo::error, L"Image file not found", L"%s", p->sIconPath.cstr() );
cStrW s;
s.f ( L"Image file not found: %s", p->sIconPath.cstr() );
LOG ( s.cstr() );
}
else
{
HICON hIcon;
Bitmap bm ( p->sIconPath.cstr() );
if ( ! ( Ok == bm.GetLastStatus() ) )
LOG_V ( L"Bitmap constructor failed with %s.", p->sIconPath.cstr() );
else
{
bm.GetHICON(&hIcon);
if ( Ok != bm.GetLastStatus() )
LOG_V ( L"Bitmap::GetHICON() failed with %s", p->sIconPath.cstr() );
else
{
iImageIndex = ImageList_AddIcon( hIL, hIcon );
bLoadedFromFile = true;
}
}
if ( ! bLoadedFromFile)
mojo::put_ad_lib_memo ( mojo::cMemo::error, L"Unable to display image file", L"%s", p->sIconPath.cstr() );
}
}
if ( ! bLoadedFromFile )
{
iImageIndex = 0;;
}
#if 0
LVITEM lvi;
ZeroMemory ( &lvi, sizeof(lvi) );
lvi.mask = LVIF_IMAGE;
lvi.iItem = iItemIndex;
lvi.iImage = iImageIndex;
ListView_SetItem ( hwnd, &lvi );
#endif
}
HIMAGELIST hResult = ListView_SetImageList ( hwnd, hIL, LVSIL_NORMAL );
hResult;
}
/*
** Sets the system wallpapar.
**
*/
void System::SetWallpaper(const std::wstring& wallpaper, const std::wstring& style)
{
if (!wallpaper.empty())
{
if (_waccess(wallpaper.c_str(), 0) == -1)
{
LogErrorF(L"!SetWallpaper: Unable to read file: %s", wallpaper.c_str());
return;
}
Bitmap* bitmap = Bitmap::FromFile(wallpaper.c_str());
if (bitmap && bitmap->GetLastStatus() == Ok)
{
std::wstring file = GetRainmeter().GetSettingsPath() + L"Wallpaper.bmp";
const CLSID bmpClsid = { 0x557cf400, 0x1a04, 0x11d3, { 0x9a, 0x73, 0x0, 0x0, 0xf8, 0x1e, 0xf3, 0x2e } };
if (bitmap->Save(file.c_str(), &bmpClsid) == Ok)
{
if (!style.empty())
{
HKEY hKey;
if (RegOpenKeyEx(HKEY_CURRENT_USER, L"Control Panel\\Desktop", 0, KEY_SET_VALUE, &hKey) == ERROR_SUCCESS)
{
const WCHAR* wallStyle = nullptr;
const WCHAR* wallTile = L"0";
const WCHAR* option = style.c_str();
if (_wcsicmp(option, L"CENTER") == 0)
{
wallStyle = L"0";
}
else if (_wcsicmp(option, L"TILE") == 0)
{
wallStyle = L"0";
wallTile = L"1";
}
else if (_wcsicmp(option, L"STRETCH") == 0)
{
wallStyle = L"2";
}
else if (Platform::IsAtLeastWin7())
{
if (_wcsicmp(option, L"FIT") == 0)
{
wallStyle = L"6";
}
else if (_wcsicmp(option, L"FILL") == 0)
{
wallStyle = L"10";
}
}
if (wallStyle)
{
RegSetValueEx(hKey, L"WallpaperStyle", 0, REG_SZ, (const BYTE*)wallStyle, sizeof(WCHAR) * 2);
RegSetValueEx(hKey, L"TileWallpaper", 0, REG_SZ, (const BYTE*)wallTile, sizeof(WCHAR) * 2);
}
else
{
LogError(L"!SetWallpaper: Invalid style");
}
RegCloseKey(hKey);
}
}
SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, (void*)file.c_str(), SPIF_UPDATEINIFILE);
}
}
delete bitmap;
}
}
// 读取图片(从内存中加载)
BOOL LoadBitmapFromMem(BYTE* pByte, DWORD dwSize, CBitmap &bitmap, CSize &size)
{
// 根据文件大小分配HGLOBAL内存
HGLOBAL hGlobal = GlobalAlloc( GMEM_MOVEABLE | GMEM_NODISCARD, dwSize );
if ( !hGlobal )
{
TRACE( _T( "Load (file): Error allocating memory\n" ) );
return FALSE;
};
char *pData = reinterpret_cast<char*>(GlobalLock(hGlobal));
if ( !pData )
{
TRACE( _T( "Load (file): Error locking memory\n" ) );
GlobalFree( hGlobal );
return FALSE;
};
// 将文件内容读到HGLOBAL内存中
memcpy(pData, pByte, dwSize);
GlobalUnlock( hGlobal );
// 利用hGlobal内存中的数据创建stream
IStream *pStream = NULL;
if ( CreateStreamOnHGlobal( hGlobal, TRUE, &pStream ) != S_OK )
{
return FALSE;
}
Bitmap* pBitmap = Gdiplus::Bitmap::FromStream(pStream);
// 要加上这一句，否则由GlobalAlloc得来的hGlobal内存没有被释放，导致内存泄露，由于
// CreateStreamOnHGlobal第二个参数被设置为TRUE，所以调用pStream->Release()会自动
// 将hGlobal内存（参见msdn对CreateStreamOnHGlobal的说明）
pStream->Release();
HBITMAP hBitmap = NULL;
Status status = pBitmap->GetLastStatus();
if(Ok == status)
{
status = pBitmap->GetHBITMAP(Color(0,0,0), &hBitmap);
delete pBitmap;
if(Ok == status)
{
if(bitmap.m_hObject != NULL)
{
bitmap.Detach();
}
bitmap.Attach(hBitmap);
BITMAP bmInfo;
::GetObject( bitmap.m_hObject, sizeof(BITMAP), &bmInfo );
size.cx = bmInfo.bmWidth;
size.cy = bmInfo.bmHeight;
return TRUE;
}
}
return FALSE;
}
/*
** Loads the image from file handle
**
*/
Bitmap* TintedImage::LoadImageFromFileHandle(HANDLE fileHandle, DWORD fileSize, HGLOBAL* phBuffer)
{
HGLOBAL hBuffer = ::GlobalAlloc(GMEM_MOVEABLE, fileSize);
if (hBuffer)
{
void* pBuffer = ::GlobalLock(hBuffer);
if (pBuffer)
{
DWORD readBytes;
ReadFile(fileHandle, pBuffer, fileSize, &readBytes, nullptr);
::GlobalUnlock(hBuffer);
IStream* pStream = nullptr;
if (::CreateStreamOnHGlobal(hBuffer, FALSE, &pStream) == S_OK)
{
Bitmap* bitmap = Bitmap::FromStream(pStream);
pStream->Release();
if (Ok == bitmap->GetLastStatus())
{
GUID guid;
if (Ok == bitmap->GetRawFormat(&guid) && guid != ImageFormatIcon)
{
// Gather EXIF orientation information
if (m_UseExifOrientation)
{
UINT size = bitmap->GetPropertyItemSize(PropertyTagOrientation);
if (size)
{
RotateFlipType flip = RotateNoneFlipNone;
PropertyItem* orientation = (PropertyItem*)new BYTE[size];
bitmap->GetPropertyItem(PropertyTagOrientation, size, orientation);
if (orientation)
{
switch(*(short*)orientation->value)
{
case 8:
flip = Rotate270FlipNone;
break;
case 7:
flip = Rotate270FlipX;
break;
case 6:
flip = Rotate90FlipNone;
break;
case 5:
flip = Rotate90FlipX;
break;
case 4:
flip = Rotate180FlipX;
break;
case 3:
flip = Rotate180FlipNone;
break;
case 2:
flip = RotateNoneFlipX;
break;
default:
flip = RotateNoneFlipNone;
}
bitmap->RotateFlip(flip);
}
delete [] orientation;
}
}
////////////////////////////////////////////
// Convert loaded image to faster blittable bitmap (may increase memory usage slightly)
Rect r(0, 0, bitmap->GetWidth(), bitmap->GetHeight());
Bitmap* clone = new Bitmap(r.Width, r.Height, PixelFormat32bppPARGB);
{
Graphics graphics(clone);
graphics.DrawImage(bitmap, r, 0, 0, r.Width, r.Height, UnitPixel);
}
delete bitmap;
bitmap = clone;
::GlobalFree(hBuffer);
hBuffer = nullptr;
////////////////////////////////////////////
}
*phBuffer = hBuffer;
return bitmap;
}
delete bitmap;
}
}
::GlobalFree(hBuffer);
}
*phBuffer = nullptr;
return nullptr;
}
int loadImage(struct textureTableIndexStruct *tti, char *fname)
{
/* http://msdn.microsoft.com/en-us/library/ms536298(VS.85).aspx GDI+ Lockbits example - what this function is based on*/
/* http://www.microsoft.com/downloads/details.aspx?FamilyID=6a63ab9c-df12-4d41-933c-be590feaa05a&DisplayLang=en GDI+ redistributable download - gdiplus.dll 2MB */
if(!loaded)
{
initImageLoader();
loaded = 1;
}
// convert to wide char http://msdn.microsoft.com/en-us/library/ms235631(VS.80).aspx
//fname = "C:/source2/freewrl/freex3d/tests/helpers/brick.png";
//fname = "junk.jpg"; //test failure condition
size_t origsize = strlen(fname) + 1;
char* fname2 = (char*) malloc(origsize);
strcpy(fname2,fname);
for(int jj=0;jj<strlen(fname2);jj++)
if(fname2[jj] == '/' ) fname2[jj] = '\\';
const size_t newsize = 225;
size_t convertedChars = 0;
wchar_t wcstring[newsize];
//mbstowcs_s(&convertedChars, wcstring, origsize, fname, _TRUNCATE);
#if _MSC_VER >= 1500
mbstowcs_s(&convertedChars, wcstring, origsize, fname2, _TRUNCATE);
#else
mbstowcs(wcstring, fname2, MB_CUR_MAX);
#endif
free(fname2);
Bitmap *bitmap = NULL;
Status stat;
bitmap = Bitmap::FromFile(wcstring,false); //new Bitmap(wcstring); //or Bitmap::FromFile(wcstring,false); L"LockBitsTest1.bmp");
// verifying the success of constructors http://msdn.microsoft.com/en-us/library/ms533801(VS.85).aspx
stat = bitmap->GetLastStatus(); // http://msdn.microsoft.com/en-us/library/ms535410(VS.85).aspx
if(stat != Ok)
return 0; //should come here if it can't find the image file
BitmapData* bitmapData = new BitmapData;
//#define verbose 1
#ifdef verbose
printf("bitmap W=%d H=%d\n",bitmap->GetWidth(),bitmap->GetHeight());
/* http://msdn.microsoft.com/en-us/library/ms535387(VS.85).aspx GetPixelFormat
http://msdn.microsoft.com/en-us/library/ms534412(v=VS.85).aspx pixelFormat constants
http://msdn.microsoft.com/en-us/library/ms534136(v=VS.85).aspx Image::GetFlags ImageFlagsColorSpaceGRAY = 0x0040,
*/
UINT flags = bitmap->GetFlags();
printf("The value of flags, in hexadecimal form, is %x.\n", flags);
// Is the ColorSpaceRGB flag set?
if(flags & ImageFlagsColorSpaceRGB)
printf("The ColorSpaceRGB flag is set.\n");
else if(flags & ImageFlagsColorSpaceGRAY)
printf("The ColorSpaceGRAY flag is set.\n");
printf("bitmap format index =%d %d\n",bitmap->GetPixelFormat()%256,bitmap->GetPixelFormat());
if(Gdiplus::IsAlphaPixelFormat(bitmap->GetPixelFormat()) )
printf("has alpha channel\n");
else
printf("no alpha channel\n");
if(Gdiplus::IsCanonicalPixelFormat(bitmap->GetPixelFormat()) )
printf("is canonical\n");
else
printf("not canonical\n");
printf("Number of bits per pixel %d\n",Gdiplus::GetPixelFormatSize(bitmap->GetPixelFormat()));
#endif
#undef verbose
bool flipVertically = true;
Rect rect(0,0,bitmap->GetWidth(),bitmap->GetHeight());
if(flipVertically)
bitmapData->Stride = -bitmap->GetWidth()*4;
else
bitmapData->Stride = bitmap->GetWidth()*4;
bitmapData->Width = bitmap->GetWidth();
bitmapData->Height = bitmap->GetHeight();
bitmapData->PixelFormat = PixelFormat32bppARGB;
int totalbytes = bitmap->GetWidth() * bitmap->GetHeight() * 4; //tti->depth;
unsigned char * blob = (unsigned char*)malloc(totalbytes);
if(flipVertically)
bitmapData->Scan0 = &blob[bitmap->GetWidth()*bitmap->GetHeight()*4 + bitmapData->Stride];
else
bitmapData->Scan0 = blob;
// Lock a rectangular portion of the bitmap for reading.
bitmap->LockBits(
&rect,
ImageLockModeRead|ImageLockModeUserInputBuf,
PixelFormat32bppARGB, //PixelFormat24bppRGB,
bitmapData);
#ifdef verbose
printf("The stride is %d.\n\n", bitmapData->Stride);
printf("bitmapData W=%d H=%d\n",bitmapData->Width,bitmapData->Height);
#endif
#ifdef verbose
// Display the hexadecimal value of each pixel in the 5x3 rectangle.
UINT* pixels = (UINT*)bitmapData->Scan0;
for(UINT row = 0; row < 23; ++row)
{
for(UINT col = 0; col < 5; ++col)
{
printf("%x\n", pixels[row * bitmapData->Stride / 4 + col]);
}
printf("- - - - - - - - - - \n");
}
#endif
//deep copy data so browser owns it (and does its FREE_IF_NZ) and we can delete our copy here and forget about it
tti->x = bitmapData->Width;
tti->y = bitmapData->Height;
tti->frames = 1;
tti->texdata = blob;
if(!blob)
printf("ouch in gdiplus image loader L140 - no image data\n");
//tti->hasAlpha = Gdiplus::IsAlphaPixelFormat(bitmapData->PixelFormat)?1:0;
tti->hasAlpha = Gdiplus::IsAlphaPixelFormat(bitmap->GetPixelFormat())?1:0;
//printf("fname=%s alpha=%ld\n",fname,tti->hasAlpha);
#ifdef verbose
for(UINT row = 0; row < 23; ++row)
{
for(UINT col = 0; col < 5; ++col)
{
//printf("%x\n", *(UINT*)&(tti->texdata[(row * bitmapData->Stride / 4 + col)*tti->depth]));
printf("%x\n", *(UINT*)&(tti->texdata[(row * tti->x + col)*4])); //tti->depth]));
}
printf("- - - - - - - - - - \n");
}
#endif
tti->filename = fname;
// wrong: tti->status = TEX_NEEDSBINDING; //make this the last thing you set, because another thread is watching ready to bind
// wrong - let the calling function set the status otherwise textures disappear sometimes
bitmap->UnlockBits(bitmapData);
delete bitmapData;
delete bitmap;
//shutdownImageLoader(); //we'll keep it loaded
if(0)
{
shutdownImageLoader();
loaded = 0;
}
return 1;
}
