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0032463: Visualization - implement Image_AlienPixMap::Load() via emscripten_get_preloaded_image_data()

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This commit is contained in:
kgv
2021-06-27 17:32:27 +03:00
parent 73dee81133
commit 16222b8cd2
5 changed files with 45 additions and 129 deletions
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41
src/Image/Image_AlienPixMap.cxx
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@@ -35,6 +35,8 @@
#ifdef _MSC_VER
#pragma comment(lib, "Ole32.lib")
#endif
#elif defined(__EMSCRIPTEN__)
#include <emscripten/emscripten.h>
#endif
#include <Image_AlienPixMap.hxx>
@@ -494,6 +496,12 @@ void Image_AlienPixMap::Clear()
FreeImage_Unload (myLibImage);
myLibImage = NULL;
}
#elif defined(__EMSCRIPTEN__)
if (myLibImage != NULL)
{
free ((void* )myLibImage);
myLibImage = NULL;
}
#endif
}
@@ -798,6 +806,39 @@ bool Image_AlienPixMap::Load (std::istream& theStream,
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,
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& )