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occt/src/Image/Image_AlienPixMap.cxx
mzernova b47b7e69f7 0031956: Visualization - provide Image_AlienPixMap::Save() writing into a memory buffer instead of a file
Added two new Image_AlienPixMap::Save() overloads, taking std::ostream or memory buffer arguments.
2023-06-12 11:20:44 +01:00

1594 lines
48 KiB
C++

// Created on: 2010-09-16
// Created by: KGV
// Copyright (c) 2010-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#if !defined(HAVE_FREEIMAGE) && defined(_WIN32)
#define HAVE_WINCODEC
#endif
#ifdef HAVE_FREEIMAGE
#include <FreeImage.h>
#ifdef _MSC_VER
#pragma comment( lib, "FreeImage.lib" )
#endif
#elif defined(HAVE_WINCODEC)
#include <wincodec.h>
// prevent warnings on MSVC10
#include <Standard_WarningsDisable.hxx>
#include <Standard_TypeDef.hxx>
#include <Standard_WarningsRestore.hxx>
#undef min
#undef max
#ifdef _MSC_VER
#pragma comment(lib, "Ole32.lib")
#endif
#elif defined(__EMSCRIPTEN__)
#include <emscripten/emscripten.h>
#endif
#include <Image_AlienPixMap.hxx>
#include <gp.hxx>
#include <Message.hxx>
#include <Message_Messenger.hxx>
#include <NCollection_Array1.hxx>
#include <Standard_ArrayStreamBuffer.hxx>
#include <TCollection_AsciiString.hxx>
#include <TCollection_ExtendedString.hxx>
#include <OSD_OpenFile.hxx>
#include <fstream>
#include <algorithm>
IMPLEMENT_STANDARD_RTTIEXT(Image_AlienPixMap,Image_PixMap)
namespace
{
#ifdef HAVE_FREEIMAGE
static Image_Format convertFromFreeFormat (FREE_IMAGE_TYPE theFormatFI,
FREE_IMAGE_COLOR_TYPE theColorTypeFI,
unsigned theBitsPerPixel)
{
switch (theFormatFI)
{
case FIT_RGBF: return Image_Format_RGBF;
case FIT_RGBAF: return Image_Format_RGBAF;
case FIT_FLOAT: return Image_Format_GrayF;
case FIT_INT16:
case FIT_UINT16: return Image_Format_Gray16;
case FIT_BITMAP:
{
switch (theColorTypeFI)
{
case FIC_MINISBLACK:
{
return Image_Format_Gray;
}
case FIC_RGB:
{
if (Image_PixMap::IsBigEndianHost())
{
return (theBitsPerPixel == 32) ? Image_Format_RGB32 : Image_Format_RGB;
}
else
{
return (theBitsPerPixel == 32) ? Image_Format_BGR32 : Image_Format_BGR;
}
}
case FIC_RGBALPHA:
{
return Image_PixMap::IsBigEndianHost() ? Image_Format_RGBA : Image_Format_BGRA;
}
default:
return Image_Format_UNKNOWN;
}
}
default:
return Image_Format_UNKNOWN;
}
}
static FREE_IMAGE_TYPE convertToFreeFormat (Image_Format theFormat)
{
switch (theFormat)
{
case Image_Format_GrayF:
case Image_Format_AlphaF:
return FIT_FLOAT;
case Image_Format_RGBAF:
return FIT_RGBAF;
case Image_Format_RGBF:
return FIT_RGBF;
case Image_Format_RGBA:
case Image_Format_BGRA:
case Image_Format_RGB32:
case Image_Format_BGR32:
case Image_Format_RGB:
case Image_Format_BGR:
case Image_Format_Gray:
case Image_Format_Alpha:
return FIT_BITMAP;
case Image_Format_Gray16:
return FIT_UINT16;
default:
return FIT_UNKNOWN;
}
}
//! Wrapper for accessing C++ stream from FreeImage.
class Image_FreeImageStream
{
public:
//! Construct wrapper over input stream.
Image_FreeImageStream (std::istream& theStream)
: myIStream (&theStream), myOStream (NULL), myInitPos (theStream.tellg()) {}
//! Construct wrapper over output stream.
Image_FreeImageStream (std::ostream& theStream)
: myIStream (NULL), myOStream (&theStream), myInitPos (theStream.tellp()) {}
//! Get io object.
FreeImageIO GetFiIO() const
{
FreeImageIO anIo;
memset (&anIo, 0, sizeof(anIo));
if (myIStream != NULL)
{
anIo.read_proc = readProc;
anIo.seek_proc = seekProcIn;
anIo.tell_proc = tellProcIn;
}
if (myOStream != NULL)
{
anIo.write_proc = writeProc;
// seek and tell are also used for saving in some formats (.tif for example)
anIo.seek_proc = seekProcOut;
anIo.tell_proc = tellProcOut;
}
return anIo;
}
public:
//! Simulate fread().
static unsigned int DLL_CALLCONV readProc (void* theBuffer, unsigned int theSize, unsigned int theCount, fi_handle theHandle)
{
Image_FreeImageStream* aThis = (Image_FreeImageStream* )theHandle;
if (aThis->myIStream == NULL)
{
return 0;
}
if (!aThis->myIStream->read ((char* )theBuffer, std::streamsize(theSize) * std::streamsize(theCount)))
{
//aThis->myIStream->clear();
}
const std::streamsize aNbRead = aThis->myIStream->gcount();
return (unsigned int )(aNbRead / theSize);
}
//! Simulate fwrite().
static unsigned int DLL_CALLCONV writeProc (void* theBuffer, unsigned int theSize, unsigned int theCount, fi_handle theHandle)
{
Image_FreeImageStream* aThis = (Image_FreeImageStream* )theHandle;
if (aThis->myOStream != NULL
&& aThis->myOStream->write ((const char* )theBuffer, std::streamsize(theSize) * std::streamsize(theCount)))
{
return theCount;
}
return 0;
}
//! Simulate fseek().
static int DLL_CALLCONV seekProcIn (fi_handle theHandle, long theOffset, int theOrigin)
{
Image_FreeImageStream* aThis = (Image_FreeImageStream* )theHandle;
if (aThis->myIStream == NULL)
{
return -1;
}
bool isSeekDone = false;
switch (theOrigin)
{
case SEEK_SET:
if (aThis->myIStream->seekg ((std::streamoff )aThis->myInitPos + theOffset, std::ios::beg))
{
isSeekDone = true;
}
break;
case SEEK_CUR:
if (aThis->myIStream->seekg (theOffset, std::ios::cur))
{
isSeekDone = true;
}
break;
case SEEK_END:
if (aThis->myIStream->seekg (theOffset, std::ios::end))
{
isSeekDone = true;
}
break;
}
return isSeekDone ? 0 : -1;
}
static int DLL_CALLCONV seekProcOut (fi_handle theHandle, long theOffset, int theOrigin)
{
Image_FreeImageStream* aThis = (Image_FreeImageStream* )theHandle;
if (aThis->myOStream == NULL)
{
return -1;
}
bool isSeekDone = false;
switch (theOrigin)
{
case SEEK_SET:
if (aThis->myOStream->seekp ((std::streamoff )aThis->myInitPos + theOffset, std::ios::beg))
{
isSeekDone = true;
}
break;
case SEEK_CUR:
if (aThis->myOStream->seekp (theOffset, std::ios::cur))
{
isSeekDone = true;
}
break;
case SEEK_END:
if (aThis->myOStream->seekp (theOffset, std::ios::end))
{
isSeekDone = true;
}
break;
}
return isSeekDone ? 0 : -1;
}
//! Simulate ftell().
static long DLL_CALLCONV tellProcIn (fi_handle theHandle)
{
Image_FreeImageStream* aThis = (Image_FreeImageStream* )theHandle;
const long aPos = aThis->myIStream != NULL ? (long )(aThis->myIStream->tellg() - aThis->myInitPos) : 0;
return aPos;
}
static long DLL_CALLCONV tellProcOut (fi_handle theHandle)
{
Image_FreeImageStream* aThis = (Image_FreeImageStream* )theHandle;
const long aPos = aThis->myOStream != NULL ? (long )(aThis->myOStream->tellp() - aThis->myInitPos) : 0;
return aPos;
}
private:
std::istream* myIStream;
std::ostream* myOStream;
std::streampos myInitPos;
};
#elif defined(HAVE_WINCODEC)
//! Return a zero GUID
static GUID getNullGuid()
{
GUID aGuid = { 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };
return aGuid;
}
//! Returns GUID of image format from file name
static GUID getFileFormatFromName (const TCollection_AsciiString& theFileName)
{
TCollection_AsciiString aFileNameLower = theFileName;
aFileNameLower.LowerCase();
GUID aFileFormat = getNullGuid();
if (aFileNameLower.EndsWith (".bmp"))
{
aFileFormat = GUID_ContainerFormatBmp;
}
else if (aFileNameLower.EndsWith (".png"))
{
aFileFormat = GUID_ContainerFormatPng;
}
else if (aFileNameLower.EndsWith (".jpg")
|| aFileNameLower.EndsWith (".jpeg"))
{
aFileFormat = GUID_ContainerFormatJpeg;
}
else if (aFileNameLower.EndsWith (".tiff")
|| aFileNameLower.EndsWith (".tif"))
{
aFileFormat = GUID_ContainerFormatTiff;
}
else if (aFileNameLower.EndsWith (".gif"))
{
aFileFormat = GUID_ContainerFormatGif;
}
return aFileFormat;
}
//! Sentry over IUnknown pointer.
template<class T> class Image_ComPtr
{
public:
//! Empty constructor.
Image_ComPtr()
: myPtr (NULL) {}
//! Destructor.
~Image_ComPtr()
{
Nullify();
}
//! Return TRUE if pointer is NULL.
bool IsNull() const { return myPtr == NULL; }
//! Release the pointer.
void Nullify()
{
if (myPtr != NULL)
{
myPtr->Release();
myPtr = NULL;
}
}
//! Return pointer for initialization.
T*& ChangePtr()
{
Standard_ASSERT_RAISE (myPtr == NULL, "Pointer cannot be initialized twice!");
return myPtr;
}
//! Return pointer.
T* get() { return myPtr; }
//! Return pointer.
T* operator->() { return get(); }
//! Cast handle to contained type
T& operator*() { return *get(); }
private:
T* myPtr;
};
//! Convert WIC GUID to Image_Format.
static Image_Format convertFromWicFormat (const WICPixelFormatGUID& theFormat)
{
if (theFormat == GUID_WICPixelFormat32bppBGRA)
{
return Image_Format_BGRA;
}
else if (theFormat == GUID_WICPixelFormat32bppBGR)
{
return Image_Format_BGR32;
}
else if (theFormat == GUID_WICPixelFormat24bppRGB)
{
return Image_Format_RGB;
}
else if (theFormat == GUID_WICPixelFormat24bppBGR)
{
return Image_Format_BGR;
}
else if (theFormat == GUID_WICPixelFormat8bppGray)
{
return Image_Format_Gray;
}
else if (theFormat == GUID_WICPixelFormat16bppGray)
{
return Image_Format_Gray16;
}
return Image_Format_UNKNOWN;
}
//! Convert Image_Format to WIC GUID.
static WICPixelFormatGUID convertToWicFormat (Image_Format theFormat)
{
switch (theFormat)
{
case Image_Format_BGRA: return GUID_WICPixelFormat32bppBGRA;
case Image_Format_BGR32: return GUID_WICPixelFormat32bppBGR;
case Image_Format_RGB: return GUID_WICPixelFormat24bppRGB;
case Image_Format_BGR: return GUID_WICPixelFormat24bppBGR;
case Image_Format_Gray: return GUID_WICPixelFormat8bppGray;
case Image_Format_Alpha: return GUID_WICPixelFormat8bppGray; // GUID_WICPixelFormat8bppAlpha
case Image_Format_Gray16: return GUID_WICPixelFormat16bppGray;
case Image_Format_GrayF: // GUID_WICPixelFormat32bppGrayFloat
case Image_Format_AlphaF:
case Image_Format_RGBAF: // GUID_WICPixelFormat128bppRGBAFloat
case Image_Format_RGBF: // GUID_WICPixelFormat96bppRGBFloat
case Image_Format_RGBA: // GUID_WICPixelFormat32bppRGBA
case Image_Format_RGB32: // GUID_WICPixelFormat32bppRGB
default:
return getNullGuid();
}
}
#endif
}
// =======================================================================
// function : Image_AlienPixMap
// purpose :
// =======================================================================
Image_AlienPixMap::Image_AlienPixMap()
#ifdef HAVE_WINCODEC
: myPalette (NULL)
#else
: myLibImage (NULL)
#endif
{
SetTopDown (false);
}
// =======================================================================
// function : ~Image_AlienPixMap
// purpose :
// =======================================================================
Image_AlienPixMap::~Image_AlienPixMap()
{
Clear();
}
// =======================================================================
// function : InitWrapper
// purpose :
// =======================================================================
bool Image_AlienPixMap::InitWrapper (Image_Format,
Standard_Byte*,
const Standard_Size,
const Standard_Size,
const Standard_Size)
{
Clear();
return false;
}
// =======================================================================
// function : InitTrash
// purpose :
// =======================================================================
#ifdef HAVE_FREEIMAGE
bool Image_AlienPixMap::InitTrash (Image_Format thePixelFormat,
const Standard_Size theSizeX,
const Standard_Size theSizeY,
const Standard_Size /*theSizeRowBytes*/)
{
Clear();
FREE_IMAGE_TYPE aFormatFI = convertToFreeFormat (thePixelFormat);
int aBitsPerPixel = (int )Image_PixMap::SizePixelBytes (thePixelFormat) * 8;
if (aFormatFI == FIT_UNKNOWN)
{
aFormatFI = FIT_BITMAP;
aBitsPerPixel = 24;
}
FIBITMAP* anImage = FreeImage_AllocateT (aFormatFI, (int )theSizeX, (int )theSizeY, aBitsPerPixel);
Image_Format aFormat = convertFromFreeFormat (FreeImage_GetImageType(anImage),
FreeImage_GetColorType(anImage),
FreeImage_GetBPP (anImage));
if (thePixelFormat == Image_Format_BGR32
|| thePixelFormat == Image_Format_RGB32)
{
//FreeImage_SetTransparent (anImage, FALSE);
aFormat = (aFormat == Image_Format_BGRA) ? Image_Format_BGR32 : Image_Format_RGB32;
}
Image_PixMap::InitWrapper (aFormat, FreeImage_GetBits (anImage),
FreeImage_GetWidth (anImage), FreeImage_GetHeight (anImage), FreeImage_GetPitch (anImage));
SetTopDown (false);
// assign image after wrapper initialization (virtual Clear() called inside)
myLibImage = anImage;
return true;
}
#elif defined(HAVE_WINCODEC)
bool Image_AlienPixMap::InitTrash (Image_Format thePixelFormat,
const Standard_Size theSizeX,
const Standard_Size theSizeY,
const Standard_Size theSizeRowBytes)
{
Clear();
Image_Format aFormat = thePixelFormat;
switch (aFormat)
{
case Image_Format_RGB:
aFormat = Image_Format_BGR;
break;
case Image_Format_RGB32:
aFormat = Image_Format_BGR32;
break;
case Image_Format_RGBA:
aFormat = Image_Format_BGRA;
break;
default:
break;
}
if (!Image_PixMap::InitTrash (aFormat, theSizeX, theSizeY, theSizeRowBytes))
{
return false;
}
SetTopDown (true);
return true;
}
#else
bool Image_AlienPixMap::InitTrash (Image_Format thePixelFormat,
const Standard_Size theSizeX,
const Standard_Size theSizeY,
const Standard_Size theSizeRowBytes)
{
return Image_PixMap::InitTrash (thePixelFormat, theSizeX, theSizeY, theSizeRowBytes);
}
#endif
// =======================================================================
// function : InitCopy
// purpose :
// =======================================================================
bool Image_AlienPixMap::InitCopy (const Image_PixMap& theCopy)
{
if (&theCopy == this)
{
// self-copying disallowed
return false;
}
if (!InitTrash (theCopy.Format(), theCopy.SizeX(), theCopy.SizeY(), theCopy.SizeRowBytes()))
{
return false;
}
if (myImgFormat == theCopy.Format())
{
if (SizeRowBytes() == theCopy.SizeRowBytes()
&& TopDownInc() == theCopy.TopDownInc())
{
// copy with one call
memcpy (ChangeData(), theCopy.Data(), std::min (SizeBytes(), theCopy.SizeBytes()));
return true;
}
// copy row-by-row
const Standard_Size aRowSizeBytes = std::min (SizeRowBytes(), theCopy.SizeRowBytes());
for (Standard_Size aRow = 0; aRow < myData.SizeY; ++aRow)
{
memcpy (ChangeRow (aRow), theCopy.Row (aRow), aRowSizeBytes);
}
return true;
}
// pixel format conversion required
Clear();
return false;
}
// =======================================================================
// function : Clear
// purpose :
// =======================================================================
void Image_AlienPixMap::Clear()
{
Image_PixMap::Clear();
#ifdef HAVE_FREEIMAGE
if (myLibImage != NULL)
{
FreeImage_Unload (myLibImage);
myLibImage = NULL;
}
#elif defined(HAVE_WINCODEC)
if (myPalette != NULL)
{
myPalette->Release();
myPalette = NULL;
}
#elif defined(__EMSCRIPTEN__)
if (myLibImage != NULL)
{
free ((void* )myLibImage);
myLibImage = NULL;
}
#endif
}
// =======================================================================
// function : IsTopDownDefault
// purpose :
// =======================================================================
bool Image_AlienPixMap::IsTopDownDefault()
{
#ifdef HAVE_FREEIMAGE
return false;
#elif defined(HAVE_WINCODEC)
return true;
#else
return false;
#endif
}
// =======================================================================
// function : Load
// purpose :
// =======================================================================
#ifdef HAVE_FREEIMAGE
bool Image_AlienPixMap::Load (const Standard_Byte* theData,
const Standard_Size theLength,
const TCollection_AsciiString& theImagePath)
{
Clear();
#ifdef _WIN32
const TCollection_ExtendedString aFileNameW (theImagePath);
#endif
FREE_IMAGE_FORMAT aFIF = FIF_UNKNOWN;
FIMEMORY* aFiMem = NULL;
if (theData != NULL)
{
aFiMem = FreeImage_OpenMemory ((BYTE* )theData, (DWORD )theLength);
aFIF = FreeImage_GetFileTypeFromMemory (aFiMem, 0);
}
else
{
#ifdef _WIN32
aFIF = FreeImage_GetFileTypeU (aFileNameW.ToWideString(), 0);
#else
aFIF = FreeImage_GetFileType (theImagePath.ToCString(), 0);
#endif
}
if (aFIF == FIF_UNKNOWN)
{
// no signature? try to guess the file format from the file extension
aFIF = FreeImage_GetFIFFromFilename (theImagePath.ToCString());
}
if ((aFIF == FIF_UNKNOWN) || !FreeImage_FIFSupportsReading (aFIF))
{
::Message::SendFail (TCollection_AsciiString ("Error: image '") + theImagePath + "' has unsupported file format");
if (aFiMem != NULL)
{
FreeImage_CloseMemory (aFiMem);
}
return false;
}
int aLoadFlags = 0;
if (aFIF == FIF_GIF)
{
// 'Play' the GIF to generate each frame (as 32bpp) instead of returning raw frame data when loading
aLoadFlags = GIF_PLAYBACK;
}
else if (aFIF == FIF_ICO)
{
// convert to 32bpp and create an alpha channel from the AND-mask when loading
aLoadFlags = ICO_MAKEALPHA;
}
FIBITMAP* anImage = NULL;
if (theData != NULL)
{
anImage = FreeImage_LoadFromMemory (aFIF, aFiMem, aLoadFlags);
FreeImage_CloseMemory (aFiMem);
aFiMem = NULL;
}
else
{
#ifdef _WIN32
anImage = FreeImage_LoadU (aFIF, aFileNameW.ToWideString(), aLoadFlags);
#else
anImage = FreeImage_Load (aFIF, theImagePath.ToCString(), aLoadFlags);
#endif
}
if (anImage == NULL)
{
::Message::SendFail (TCollection_AsciiString ("Error: image file '") + theImagePath + "' is missing or invalid");
return false;
}
Image_Format aFormat = Image_Format_UNKNOWN;
if (FreeImage_GetBPP (anImage) == 1)
{
FIBITMAP* aTmpImage = FreeImage_ConvertTo8Bits (anImage);
FreeImage_Unload (anImage);
anImage = aTmpImage;
}
if (anImage != NULL)
{
aFormat = convertFromFreeFormat (FreeImage_GetImageType(anImage),
FreeImage_GetColorType(anImage),
FreeImage_GetBPP (anImage));
if (aFormat == Image_Format_UNKNOWN)
{
FIBITMAP* aTmpImage = FreeImage_ConvertTo24Bits (anImage);
FreeImage_Unload (anImage);
anImage = aTmpImage;
if (anImage != NULL)
{
aFormat = convertFromFreeFormat (FreeImage_GetImageType(anImage),
FreeImage_GetColorType(anImage),
FreeImage_GetBPP (anImage));
}
}
}
if (aFormat == Image_Format_UNKNOWN)
{
::Message::SendFail (TCollection_AsciiString ("Error: image '") + theImagePath + "' has unsupported pixel format");
return false;
}
Image_PixMap::InitWrapper (aFormat, FreeImage_GetBits (anImage),
FreeImage_GetWidth (anImage), FreeImage_GetHeight (anImage), FreeImage_GetPitch (anImage));
SetTopDown (false);
// assign image after wrapper initialization (virtual Clear() called inside)
myLibImage = anImage;
return true;
}
bool Image_AlienPixMap::Load (std::istream& theStream,
const TCollection_AsciiString& theFileName)
{
Clear();
Image_FreeImageStream aStream (theStream);
FreeImageIO aFiIO = aStream.GetFiIO();
FREE_IMAGE_FORMAT aFIF = FreeImage_GetFileTypeFromHandle (&aFiIO, &aStream, 0);
if (aFIF == FIF_UNKNOWN)
{
// no signature? try to guess the file format from the file extension
aFIF = FreeImage_GetFIFFromFilename (theFileName.ToCString());
}
if ((aFIF == FIF_UNKNOWN) || !FreeImage_FIFSupportsReading (aFIF))
{
::Message::SendFail (TCollection_AsciiString ("Error: image stream '") + theFileName + "' has unsupported file format");
return false;
}
int aLoadFlags = 0;
if (aFIF == FIF_GIF)
{
// 'Play' the GIF to generate each frame (as 32bpp) instead of returning raw frame data when loading
aLoadFlags = GIF_PLAYBACK;
}
else if (aFIF == FIF_ICO)
{
// convert to 32bpp and create an alpha channel from the AND-mask when loading
aLoadFlags = ICO_MAKEALPHA;
}
FIBITMAP* anImage = FreeImage_LoadFromHandle (aFIF, &aFiIO, &aStream, aLoadFlags);
if (anImage == NULL)
{
::Message::SendFail (TCollection_AsciiString ("Error: image stream '") + theFileName + "' is missing or invalid");
return false;
}
Image_Format aFormat = convertFromFreeFormat (FreeImage_GetImageType(anImage),
FreeImage_GetColorType(anImage),
FreeImage_GetBPP (anImage));
if (aFormat == Image_Format_UNKNOWN)
{
::Message::SendFail (TCollection_AsciiString ("Error: image stream '") + theFileName + "' has unsupported pixel format");
return false;
}
Image_PixMap::InitWrapper (aFormat, FreeImage_GetBits (anImage),
FreeImage_GetWidth (anImage), FreeImage_GetHeight (anImage), FreeImage_GetPitch (anImage));
SetTopDown (false);
// assign image after wrapper initialization (virtual Clear() called inside)
myLibImage = anImage;
return true;
}
#elif defined(HAVE_WINCODEC)
bool Image_AlienPixMap::Load (const Standard_Byte* theData,
const Standard_Size theLength,
const TCollection_AsciiString& theFileName)
{
Clear();
Image_ComPtr<IWICImagingFactory> aWicImgFactory;
CoInitializeEx (NULL, COINIT_MULTITHREADED);
if (CoCreateInstance (CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&aWicImgFactory.ChangePtr())) != S_OK)
{
Message::SendFail ("Error: cannot initialize WIC Imaging Factory");
return false;
}
Image_ComPtr<IWICBitmapDecoder> aWicDecoder;
Image_ComPtr<IWICStream> aWicStream;
if (theData != NULL)
{
if (aWicImgFactory->CreateStream (&aWicStream.ChangePtr()) != S_OK
|| aWicStream->InitializeFromMemory ((BYTE* )theData, (DWORD )theLength) != S_OK)
{
Message::SendFail ("Error: cannot initialize WIC Stream");
return false;
}
if (aWicImgFactory->CreateDecoderFromStream (aWicStream.get(), NULL, WICDecodeMetadataCacheOnDemand, &aWicDecoder.ChangePtr()) != S_OK)
{
Message::SendFail ("Error: cannot create WIC Image Decoder");
return false;
}
}
else
{
const TCollection_ExtendedString aFileNameW (theFileName);
if (aWicImgFactory->CreateDecoderFromFilename (aFileNameW.ToWideString(), NULL, GENERIC_READ, WICDecodeMetadataCacheOnDemand, &aWicDecoder.ChangePtr()) != S_OK)
{
Message::SendFail ("Error: cannot create WIC Image Decoder");
return false;
}
}
UINT aFrameCount = 0, aFrameSizeX = 0, aFrameSizeY = 0;
WICPixelFormatGUID aWicPixelFormat = getNullGuid();
Image_ComPtr<IWICBitmapFrameDecode> aWicFrameDecode;
if (aWicDecoder->GetFrameCount (&aFrameCount) != S_OK
|| aFrameCount < 1
|| aWicDecoder->GetFrame (0, &aWicFrameDecode.ChangePtr()) != S_OK
|| aWicFrameDecode->GetSize (&aFrameSizeX, &aFrameSizeY) != S_OK
|| aWicFrameDecode->GetPixelFormat (&aWicPixelFormat) != S_OK)
{
Message::SendFail ("Error: cannot get WIC Image Frame");
return false;
}
Image_ComPtr<IWICFormatConverter> aWicConvertedFrame;
Image_Format aPixelFormat = convertFromWicFormat (aWicPixelFormat);
if (aPixelFormat == Image_Format_UNKNOWN)
{
aPixelFormat = Image_Format_RGB;
if (aWicImgFactory->CreateFormatConverter (&aWicConvertedFrame.ChangePtr()) != S_OK
|| aWicConvertedFrame->Initialize (aWicFrameDecode.get(), convertToWicFormat (aPixelFormat), WICBitmapDitherTypeNone, NULL, 0.0f, WICBitmapPaletteTypeCustom) != S_OK)
{
Message::SendFail ("Error: cannot convert WIC Image Frame to RGB format");
return false;
}
}
if (!Image_PixMap::InitTrash (aPixelFormat, aFrameSizeX, aFrameSizeY))
{
Message::SendFail ("Error: cannot initialize memory for image");
return false;
}
TCollection_AsciiString aFileNameLower = theFileName;
aFileNameLower.LowerCase();
if (aFileNameLower.EndsWith (".gif")
&& (aWicImgFactory->CreatePalette (&myPalette) != S_OK
|| aWicFrameDecode->CopyPalette (myPalette) != S_OK))
{
Message::SendFail ("Error: cannot get palette for GIF image");
return false;
}
IWICBitmapSource* aWicSrc = aWicFrameDecode.get();
if(!aWicConvertedFrame.IsNull())
{
aWicSrc = aWicConvertedFrame.get();
}
IWICBitmapFlipRotator* aRotator;
bool isTopDown = true;
if (aWicImgFactory->CreateBitmapFlipRotator (&aRotator) == S_OK
&& aRotator->Initialize (aWicSrc, WICBitmapTransformFlipVertical) == S_OK)
{
isTopDown = false;
aWicSrc = aRotator;
}
if (aWicSrc->CopyPixels (NULL, (UINT )SizeRowBytes(), (UINT )SizeBytes(), ChangeData()) != S_OK)
{
Message::SendFail ("Error: cannot copy pixels from WIC Image");
return false;
}
SetTopDown (isTopDown);
return true;
}
bool Image_AlienPixMap::Load (std::istream& theStream,
const TCollection_AsciiString& theFilePath)
{
Clear();
// fallback copying stream data into transient buffer
const std::streamoff aStart = theStream.tellg();
theStream.seekg (0, std::ios::end);
const Standard_Integer aLen = Standard_Integer(theStream.tellg() - aStart);
theStream.seekg (aStart);
if (aLen <= 0)
{
Message::SendFail ("Error: empty stream");
return false;
}
NCollection_Array1<Standard_Byte> aBuff (1, aLen);
if (!theStream.read ((char* )&aBuff.ChangeFirst(), aBuff.Size()))
{
Message::SendFail ("Error: unable to read stream");
return false;
}
return Load (&aBuff.ChangeFirst(), aBuff.Size(), theFilePath);
}
#elif defined(__EMSCRIPTEN__)
bool Image_AlienPixMap::Load (std::istream& ,
const TCollection_AsciiString& )
{
Clear();
Message::SendFail ("Error: no image library available for decoding stream");
return false;
}
bool Image_AlienPixMap::Load (const Standard_Byte* theData,
const Standard_Size theLength,
const TCollection_AsciiString& theImagePath)
{
Clear();
if (theData != NULL)
{
(void )theLength;
Message::SendFail ("Error: no image library available for decoding in-memory buffer");
return false;
}
int aSizeX = 0, aSizeY = 0;
char* anImgData = emscripten_get_preloaded_image_data (theImagePath.ToCString(), &aSizeX, &aSizeY);
if (anImgData == NULL)
{
Message::SendFail() << "Error: image '" << theImagePath << "' is not preloaded";
return false;
}
Image_PixMap::InitWrapper (Image_Format_RGBA, (Standard_Byte* )anImgData, aSizeX, aSizeY);
SetTopDown (true);
myLibImage = (FIBITMAP* )anImgData;
return true;
}
#else
bool Image_AlienPixMap::Load (std::istream& ,
const TCollection_AsciiString& )
{
Clear();
Message::SendFail ("Error: no image library available");
return false;
}
bool Image_AlienPixMap::Load (const Standard_Byte* ,
const Standard_Size ,
const TCollection_AsciiString& )
{
Clear();
Message::SendFail ("Error: no image library available");
return false;
}
#endif
// =======================================================================
// function : savePPM
// purpose :
// =======================================================================
bool Image_AlienPixMap::savePPM (const TCollection_AsciiString& theFileName) const
{
if (IsEmpty())
{
return false;
}
// Open file
FILE* aFile = OSD_OpenFile (theFileName.ToCString(), "wb");
if (aFile == NULL)
{
return false;
}
// Write header
fprintf (aFile, "P6\n%d %d\n255\n", (int )SizeX(), (int )SizeY());
fprintf (aFile, "# Image stored by OpenCASCADE framework in linear RGB colorspace\n");
// Write pixel data
Standard_Byte aByte;
for (Standard_Size aRow = 0; aRow < SizeY(); ++aRow)
{
for (Standard_Size aCol = 0; aCol < SizeX(); ++aCol)
{
// extremely SLOW but universal (implemented for all supported pixel formats)
const Quantity_ColorRGBA aColor = PixelColor ((Standard_Integer )aCol, (Standard_Integer )aRow);
aByte = Standard_Byte(aColor.GetRGB().Red() * 255.0); fwrite (&aByte, 1, 1, aFile);
aByte = Standard_Byte(aColor.GetRGB().Green() * 255.0); fwrite (&aByte, 1, 1, aFile);
aByte = Standard_Byte(aColor.GetRGB().Blue() * 255.0); fwrite (&aByte, 1, 1, aFile);
}
}
// Close file
fclose (aFile);
return true;
}
// =======================================================================
// function : convertData
// purpose :
// =======================================================================
#ifdef HAVE_WINCODEC
static bool convertData (const Image_AlienPixMap& theSrcPixMapData,
const WICPixelFormatGUID& theFormat,
IWICImagingFactory& theWicImgFactory,
Image_PixMapData& theDstPixMapData)
{
const UINT aSizeRowBytes = (UINT)theSrcPixMapData.SizeRowBytes();
const UINT aSizeBytes = (UINT)theSrcPixMapData.SizeBytes();
Image_ComPtr<IWICBitmap> anSrcImg;
Image_ComPtr<IWICFormatConverter> aWicFormatConverter;
HRESULT anHResult = theWicImgFactory.CreateBitmapFromMemory ((UINT)theSrcPixMapData.SizeX(), (UINT)theSrcPixMapData.SizeY(),
convertToWicFormat (theSrcPixMapData.Format()),
aSizeRowBytes, aSizeBytes,
(BYTE*)theSrcPixMapData.Data(), &anSrcImg.ChangePtr());
if (anHResult != S_OK
|| theWicImgFactory.CreateFormatConverter (&aWicFormatConverter.ChangePtr()) != S_OK
|| aWicFormatConverter->Initialize (anSrcImg.get(), theFormat, WICBitmapDitherTypeNone, theSrcPixMapData.GetPalette(), 0.0f, WICBitmapPaletteTypeCustom) != S_OK)
{
Message::SendFail ("Error: cannot convert WIC Image Frame to required format");
return false;
}
theDstPixMapData.Init (Image_PixMap::DefaultAllocator(), 1, theSrcPixMapData.SizeXYZ(), aSizeRowBytes, NULL);
if (aWicFormatConverter->CopyPixels (NULL, aSizeRowBytes, aSizeBytes, theDstPixMapData.ChangeData()) != S_OK)
{
Message::SendFail ("Error: cannot copy pixels from WIC Image");
return false;
}
return true;
}
#endif
// =======================================================================
// function : Save
// purpose :
// =======================================================================
bool Image_AlienPixMap::Save (Standard_Byte* theBuffer,
const Standard_Size theLength,
const TCollection_AsciiString& theFileName)
{
#ifdef HAVE_FREEIMAGE
if (myLibImage == NULL)
{
return false;
}
#ifdef _WIN32
const TCollection_ExtendedString aFileNameW (theFileName.ToCString(), Standard_True);
FREE_IMAGE_FORMAT anImageFormat = FreeImage_GetFIFFromFilenameU (aFileNameW.ToWideString());
#else
FREE_IMAGE_FORMAT anImageFormat = FreeImage_GetFIFFromFilename (theFileName.ToCString());
#endif
if (anImageFormat == FIF_UNKNOWN)
{
#ifdef OCCT_DEBUG
std::cerr << "Image_PixMap, image format doesn't supported!\n";
#endif
return false;
}
if (IsTopDown())
{
FreeImage_FlipVertical (myLibImage);
SetTopDown (false);
}
FIBITMAP* anImageToDump = getImageToDump (anImageFormat);
if (anImageToDump == NULL)
{
return false;
}
bool isSaved = false;
if (theBuffer != NULL)
{
// a memory buffer wrapped by FreeImage is read only (images can be loaded but not be saved)
// so we call FreeImage_OpenMemory() with default arguments and just memcpy in requsted buffer.
FIMEMORY* aFiMem = FreeImage_OpenMemory();
isSaved = (FreeImage_SaveToMemory (anImageFormat, anImageToDump, aFiMem) != FALSE);
BYTE* aData = NULL;
DWORD aSize;
FreeImage_AcquireMemory (aFiMem, &aData, &aSize);
if (aSize > theLength)
{
Message::SendFail ("Error: memory buffer too small for storing image");
return false;
}
memcpy (theBuffer, aData, aSize);
FreeImage_CloseMemory (aFiMem);
}
else
{
#ifdef _WIN32
isSaved = (FreeImage_SaveU (anImageFormat, anImageToDump, aFileNameW.ToWideString ()) != FALSE);
#else
isSaved = (FreeImage_Save (anImageFormat, anImageToDump, theFileName.ToCString ()) != FALSE);
#endif
}
if (anImageToDump != myLibImage)
{
FreeImage_Unload (anImageToDump);
}
return isSaved;
#elif defined(HAVE_WINCODEC)
TCollection_AsciiString aFileNameLower = theFileName;
aFileNameLower.LowerCase();
if (aFileNameLower.EndsWith (".ppm"))
{
return savePPM (theFileName);
}
GUID aFileFormat = getFileFormatFromName (theFileName);
if (aFileFormat == getNullGuid())
{
Message::SendFail ("Error: unsupported image format");
return false;
}
Image_ComPtr<IWICImagingFactory> aWicImgFactory;
CoInitializeEx (NULL, COINIT_MULTITHREADED);
if (CoCreateInstance (CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&aWicImgFactory.ChangePtr())) != S_OK)
{
Message::SendFail ("Error: cannot initialize WIC Imaging Factory");
return false;
}
WICPixelFormatGUID aWicPixelFormat = convertToWicFormat (myImgFormat);
if (aWicPixelFormat == getNullGuid())
{
Message::SendFail ("Error: unsupported pixel format");
return false;
}
Image_PixMapData* aPixMapData = &myData;
Image_PixMapData aConvertedData;
if (aFileFormat == GUID_ContainerFormatGif)
{
aWicPixelFormat = GUID_WICPixelFormat8bppIndexed;
convertData (*this, aWicPixelFormat, *aWicImgFactory, aConvertedData);
aPixMapData = &aConvertedData;
}
Image_ComPtr<IWICStream> aWicStream;
Image_ComPtr<IWICBitmapEncoder> aWicEncoder;
const TCollection_ExtendedString aFileNameW (theFileName);
if (theBuffer != NULL)
{
if (aWicImgFactory->CreateStream (&aWicStream.ChangePtr()) != S_OK
|| aWicStream->InitializeFromMemory (theBuffer,(DWORD )theLength) != S_OK)
{
Message::SendFail ("Error: cannot create WIC Memory Stream");
return false;
}
}
else
{
if (aWicImgFactory->CreateStream (&aWicStream.ChangePtr()) != S_OK
|| aWicStream->InitializeFromFilename (aFileNameW.ToWideString(), GENERIC_WRITE) != S_OK)
{
Message::SendFail ("Error: cannot create WIC File Stream");
return false;
}
}
if (aWicImgFactory->CreateEncoder (aFileFormat, NULL, &aWicEncoder.ChangePtr()) != S_OK
|| aWicEncoder->Initialize (aWicStream.get(), WICBitmapEncoderNoCache) != S_OK)
{
Message::SendFail ("Error: cannot create WIC Encoder");
return false;
}
WICPixelFormatGUID aWicPixelFormatRes = aWicPixelFormat;
Image_ComPtr<IWICBitmapFrameEncode> aWicFrameEncode;
if (aWicEncoder->CreateNewFrame (&aWicFrameEncode.ChangePtr(), NULL) != S_OK
|| aWicFrameEncode->Initialize (NULL) != S_OK
|| aWicFrameEncode->SetSize ((UINT )SizeX(), (UINT )SizeY()) != S_OK
|| aWicFrameEncode->SetPixelFormat (&aWicPixelFormatRes) != S_OK)
{
Message::SendFail ("Error: cannot create WIC Frame");
return false;
}
if (aFileFormat == GUID_ContainerFormatGif
&& (myPalette == NULL
|| aWicFrameEncode->SetPalette (myPalette) != S_OK))
{
Message::SendFail ("Error: cannot set palette");
return false;
}
if (aWicPixelFormatRes != aWicPixelFormat)
{
Message::SendFail ("Error: pixel format is unsupported by image format");
return false;
}
if (IsTopDown())
{
if (aWicFrameEncode->WritePixels ((UINT )SizeY(), (UINT )SizeRowBytes(), (UINT )SizeBytes(), (BYTE* )aPixMapData->Data()) != S_OK)
{
Message::SendFail ("Error: cannot write pixels to WIC Frame");
return false;
}
}
else
{
for (Standard_Size aRow = 0; aRow < SizeY(); ++aRow)
{
if (aWicFrameEncode->WritePixels (1, (UINT )SizeRowBytes(), (UINT )SizeRowBytes(), (BYTE* )aPixMapData->Row (aRow)) != S_OK)
{
Message::SendFail ("Error: cannot write pixels to WIC Frame");
return false;
}
}
}
if (aWicFrameEncode->Commit() != S_OK
|| aWicEncoder->Commit() != S_OK)
{
Message::SendFail ("Error: cannot commit data to WIC Frame");
return false;
}
if (aWicStream->Commit (STGC_DEFAULT) != S_OK)
{
//Message::Send ("Error: cannot commit data to WIC File Stream", Message_Fail);
//return false;
}
return true;
#else
if (theBuffer != NULL)
{
Message::SendFail ("Error: no image library available");
return false;
}
const Standard_Integer aLen = theFileName.Length();
if ((aLen >= 4) && (theFileName.Value (aLen - 3) == '.')
&& strcasecmp( theFileName.ToCString() + aLen - 3, "ppm") == 0 )
{
return savePPM (theFileName);
}
Message::SendTrace ("Image_PixMap, no image library available! Image saved in PPM format");
return savePPM (theFileName);
#endif
}
bool Image_AlienPixMap::Save (std::ostream& theStream, const TCollection_AsciiString& theExtension)
{
#ifdef HAVE_FREEIMAGE
if (myLibImage == NULL)
{
return false;
}
#ifdef _WIN32
const TCollection_ExtendedString anExtW (theExtension.ToCString(), Standard_True);
FREE_IMAGE_FORMAT anImageFormat = FreeImage_GetFIFFromFilenameU (anExtW.ToWideString());
#else
FREE_IMAGE_FORMAT anImageFormat = FreeImage_GetFIFFromFilename (theExtension.ToCString());
#endif
if (anImageFormat == FIF_UNKNOWN)
{
#ifdef OCCT_DEBUG
std::cerr << "Image_PixMap, image format doesn't supported!\n";
#endif
return false;
}
if (IsTopDown())
{
FreeImage_FlipVertical (myLibImage);
SetTopDown (false);
}
FIBITMAP* anImageToDump = getImageToDump (anImageFormat);
if (anImageToDump == NULL)
{
return false;
}
bool isSaved = false;
Image_FreeImageStream aStream (theStream);
FreeImageIO anIO = aStream.GetFiIO();
isSaved = (FreeImage_SaveToHandle(anImageFormat, anImageToDump, &anIO, &aStream) != FALSE);
if (anImageToDump != myLibImage)
{
FreeImage_Unload (anImageToDump);
}
return isSaved;
#elif defined(HAVE_WINCODEC)
GUID aFileFormat = getFileFormatFromName (theExtension);
if (aFileFormat == getNullGuid())
{
Message::SendFail ("Error: unsupported image format");
return false;
}
Image_ComPtr<IWICImagingFactory> aWicImgFactory;
CoInitializeEx (NULL, COINIT_MULTITHREADED);
if (CoCreateInstance (CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&aWicImgFactory.ChangePtr())) != S_OK)
{
Message::SendFail ("Error: cannot initialize WIC Imaging Factory");
return false;
}
WICPixelFormatGUID aWicPixelFormat = convertToWicFormat (myImgFormat);
if (aWicPixelFormat == getNullGuid())
{
Message::SendFail ("Error: unsupported pixel format");
return false;
}
Image_PixMapData* aPixMapData = &myData;
Image_PixMapData aConvertedData;
if (aFileFormat == GUID_ContainerFormatGif)
{
aWicPixelFormat = GUID_WICPixelFormat8bppIndexed;
convertData (*this, aWicPixelFormat, *aWicImgFactory, aConvertedData);
aPixMapData = &aConvertedData;
}
Image_ComPtr<IStream> aStream;
Image_ComPtr<IWICBitmapEncoder> aWicEncoder;
if (CreateStreamOnHGlobal (NULL, Standard_True, &aStream.ChangePtr()) != S_OK)
{
Message::SendFail ("Error: cannot create Stream on global");
return false;
}
if (aWicImgFactory->CreateEncoder (aFileFormat, NULL, &aWicEncoder.ChangePtr()) != S_OK
|| aWicEncoder->Initialize (aStream.get(), WICBitmapEncoderNoCache) != S_OK)
{
Message::SendFail ("Error: cannot create WIC Encoder");
return false;
}
WICPixelFormatGUID aWicPixelFormatRes = aWicPixelFormat;
Image_ComPtr<IWICBitmapFrameEncode> aWicFrameEncode;
if (aWicEncoder->CreateNewFrame (&aWicFrameEncode.ChangePtr(), NULL) != S_OK
|| aWicFrameEncode->Initialize (NULL) != S_OK
|| aWicFrameEncode->SetSize ((UINT )SizeX(), (UINT )SizeY()) != S_OK
|| aWicFrameEncode->SetPixelFormat (&aWicPixelFormatRes) != S_OK)
{
Message::SendFail ("Error: cannot create WIC Frame");
return false;
}
if (aFileFormat == GUID_ContainerFormatGif
&& (myPalette == NULL
|| aWicFrameEncode->SetPalette (myPalette) != S_OK))
{
Message::SendFail ("Error: cannot set palette");
return false;
}
if (aWicPixelFormatRes != aWicPixelFormat)
{
Message::SendFail ("Error: pixel format is unsupported by image format");
return false;
}
if (IsTopDown())
{
if (aWicFrameEncode->WritePixels ((UINT )SizeY(), (UINT )SizeRowBytes(), (UINT )SizeBytes(), (BYTE* )aPixMapData->Data()) != S_OK)
{
Message::SendFail ("Error: cannot write pixels to WIC Frame");
return false;
}
}
else
{
for (Standard_Size aRow = 0; aRow < SizeY(); ++aRow)
{
if (aWicFrameEncode->WritePixels (1, (UINT )SizeRowBytes(), (UINT )SizeRowBytes(), (BYTE* )aPixMapData->Row (aRow)) != S_OK)
{
Message::SendFail ("Error: cannot write pixels to WIC Frame");
return false;
}
}
}
if (aWicFrameEncode->Commit() != S_OK
|| aWicEncoder->Commit() != S_OK)
{
Message::SendFail ("Error: cannot commit data to WIC Frame");
return false;
}
if (aStream->Commit (STGC_DEFAULT) != S_OK)
{
//Message::Send ("Error: cannot commit data to Stream", Message_Fail);
//return false;
}
// WIC doesn't have the way to encode image directly in std::ostream
// so we use a workaround to transfer data from IStream to std::ostream
STATSTG aStat;
if (aStream->Stat (&aStat, STATFLAG_NONAME) != S_OK)
{
Message::SendFail ("Error: cannot get stat from stream");
return false;
}
HGLOBAL aMem;
if (GetHGlobalFromStream (aStream.get(), &aMem) != S_OK)
{
Message::SendFail ("Error: cannot get global from stream");
return false;
}
LPVOID aData = GlobalLock (aMem);
if (aData == NULL)
{
Message::SendFail ("Error: cannot lock global");
return false;
}
if (!theStream.write ((const char* )aData, aStat.cbSize.QuadPart))
{
Message::SendFail ("Error: cannot write data to ostream");
return false;
}
if (GlobalUnlock (aMem) == 0 && GetLastError() != NO_ERROR)
{
Message::SendFail ("Error: cannot unlock global");
return false;
}
return true;
#else
Message::SendFail ("Error: no image library available");
return false;
#endif
}
// =======================================================================
// function : AdjustGamma
// purpose :
// =======================================================================
bool Image_AlienPixMap::AdjustGamma (const Standard_Real theGammaCorr)
{
#ifdef HAVE_FREEIMAGE
return FreeImage_AdjustGamma (myLibImage, theGammaCorr) != FALSE;
#else
(void )theGammaCorr;
return false;
#endif
}
#ifdef HAVE_FREEIMAGE
// =======================================================================
// function : GetImageToDump
// purpose :
// =======================================================================
FIBITMAP* Image_AlienPixMap::getImageToDump (const Standard_Integer theFormat)
{
FIBITMAP* anImageToDump = myLibImage;
// FreeImage doesn't provide flexible format conversion API
// so we should perform multiple conversions in some cases!
switch (theFormat)
{
case FIF_PNG:
case FIF_BMP:
{
if (Format() == Image_Format_BGR32
|| Format() == Image_Format_RGB32)
{
// stupid FreeImage treats reserved byte as alpha if some bytes not set to 0xFF
for (Standard_Size aRow = 0; aRow < SizeY(); ++aRow)
{
for (Standard_Size aCol = 0; aCol < SizeX(); ++aCol)
{
myData.ChangeValue (aRow, aCol)[3] = 0xFF;
}
}
}
else if (FreeImage_GetImageType (myLibImage) != FIT_BITMAP)
{
anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_BITMAP);
}
break;
}
case FIF_GIF:
{
FIBITMAP* aTmpBitmap = myLibImage;
if (FreeImage_GetImageType (myLibImage) != FIT_BITMAP)
{
aTmpBitmap = FreeImage_ConvertToType (myLibImage, FIT_BITMAP);
if (aTmpBitmap == NULL)
{
return NULL;
}
}
if (FreeImage_GetBPP (aTmpBitmap) != 24)
{
FIBITMAP* aTmpBitmap24 = FreeImage_ConvertTo24Bits (aTmpBitmap);
if (aTmpBitmap != myLibImage)
{
FreeImage_Unload (aTmpBitmap);
}
if (aTmpBitmap24 == NULL)
{
return NULL;
}
aTmpBitmap = aTmpBitmap24;
}
// need conversion to image with palette (requires 24bit bitmap)
anImageToDump = FreeImage_ColorQuantize (aTmpBitmap, FIQ_NNQUANT);
if (aTmpBitmap != myLibImage)
{
FreeImage_Unload (aTmpBitmap);
}
break;
}
case FIF_HDR:
case FIF_EXR:
{
if (Format() == Image_Format_Gray
|| Format() == Image_Format_Alpha)
{
anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_FLOAT);
}
else if (Format() == Image_Format_RGBA
|| Format() == Image_Format_BGRA)
{
anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_RGBAF);
}
else
{
FREE_IMAGE_TYPE aImgTypeFI = FreeImage_GetImageType (myLibImage);
if (aImgTypeFI != FIT_RGBF
&& aImgTypeFI != FIT_RGBAF
&& aImgTypeFI != FIT_FLOAT)
{
anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_RGBF);
}
}
break;
}
default:
{
if (FreeImage_GetImageType (myLibImage) != FIT_BITMAP)
{
anImageToDump = FreeImage_ConvertToType (myLibImage, FIT_BITMAP);
if (anImageToDump == NULL)
{
return NULL;
}
}
if (FreeImage_GetBPP (anImageToDump) != 24)
{
FIBITMAP* aTmpBitmap24 = FreeImage_ConvertTo24Bits (anImageToDump);
if (anImageToDump != myLibImage)
{
FreeImage_Unload (anImageToDump);
}
if (aTmpBitmap24 == NULL)
{
return NULL;
}
anImageToDump = aTmpBitmap24;
}
break;
}
}
return anImageToDump;
}
#endif