static mng_bool mngProcessHeaderFn(mng_handle mng, mng_uint32 width, mng_uint32 height)
{
mngstuff *mymng = (mngstuff *)mng_get_userdata(mng);
GFXFormat format;
mng_uint8 colorType = mng_get_colortype(mng);
mng_uint8 alphaDepth = mng_get_alphadepth(mng);
switch(colorType)
{
case MNG_COLORTYPE_GRAY:
case MNG_COLORTYPE_JPEGGRAY:
format = GFXFormatR8G8B8;
mng_set_canvasstyle(mng, MNG_CANVAS_RGB8);
break;
case MNG_COLORTYPE_INDEXED:
if(alphaDepth >= 1)
{
format = GFXFormatR8G8B8A8;
mng_set_canvasstyle(mng, MNG_CANVAS_RGBA8);
}
else
{
format = GFXFormatR8G8B8;
mng_set_canvasstyle(mng, MNG_CANVAS_RGB8);
}
case MNG_COLORTYPE_RGB:
case MNG_COLORTYPE_JPEGCOLOR:
if(alphaDepth >= 1)
{
format = GFXFormatR8G8B8A8;
mng_set_canvasstyle(mng, MNG_CANVAS_RGBA8);
}
else
{
format = GFXFormatR8G8B8;
mng_set_canvasstyle(mng, MNG_CANVAS_RGB8);
}
break;
case MNG_COLORTYPE_RGBA:
case MNG_COLORTYPE_JPEGCOLORA:
format = GFXFormatR8G8B8A8;
mng_set_canvasstyle(mng, MNG_CANVAS_RGBA8);
break;
default:
// This case should never get hit, however it resolves a compiler
// warning
format = GFXFormat_FIRST;
AssertISV( false, "Unknown color format in bitmap MNG Loading" );
}
mymng->image->allocateBitmap(width, height, false, format);
return MNG_TRUE;
}
//---------------------------------------------------------------------------------------------
// the header's been read. set up the display stuff
//---------------------------------------------------------------------------------------------
mng_bool MNG_DECL mymngprocessheader(mng_handle mng, mng_uint32 width, mng_uint32 height)
{
ILuint AlphaDepth;
AlphaDepth = mng_get_alphadepth(mng);
if (AlphaDepth == 0) {
ilTexImage(width, height, 1, 3, IL_BGR, IL_UNSIGNED_BYTE, NULL);
iCurImage->Origin = IL_ORIGIN_LOWER_LEFT;
mng_set_canvasstyle(mng, MNG_CANVAS_BGR8);
}
else { // Use alpha channel
ilTexImage(width, height, 1, 4, IL_BGRA, IL_UNSIGNED_BYTE, NULL);
iCurImage->Origin = IL_ORIGIN_LOWER_LEFT;
mng_set_canvasstyle(mng, MNG_CANVAS_BGRA8);
}
iCurImage->Origin = IL_ORIGIN_UPPER_LEFT;
return MNG_TRUE;
}
mng_bool
mymngprocessheader(mng_handle mng, mng_uint32 width, mng_uint32 height) {
mngstuff *client_data = (mngstuff *)mng_get_userdata(mng);
BYTE bHasAlpha = mng_get_alphadepth(mng);
#if FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_RGB
if(bHasAlpha) {
// allocate a bitmap with the given dimensions
FIBITMAP *bitmap = FreeImage_Allocate(width, height, 32, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK);
client_data->bitmap = bitmap;
// tell the mng decoder about our bit-depth choice
mng_set_canvasstyle(mng, MNG_CANVAS_RGBA8);
} else {
// allocate a bitmap with the given dimensions
FIBITMAP *bitmap = FreeImage_Allocate(width, height, 24, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK);
client_data->bitmap = bitmap;
// tell the mng decoder about our bit-depth choice
mng_set_canvasstyle(mng, MNG_CANVAS_RGB8);
}
#else
if(bHasAlpha) {
// allocate a bitmap with the given dimensions
FIBITMAP *bitmap = FreeImage_Allocate(width, height, 32, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK);
client_data->bitmap = bitmap;
// tell the mng decoder about our bit-depth choice
mng_set_canvasstyle(mng, MNG_CANVAS_BGRA8);
} else {
// allocate a bitmap with the given dimensions
FIBITMAP *bitmap = FreeImage_Allocate(width, height, 24, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK);
client_data->bitmap = bitmap;
// tell the mng decoder about our bit-depth choice
mng_set_canvasstyle(mng, MNG_CANVAS_BGR8);
}
#endif // FREEIMAGE_COLORORDER_RGB
return client_data->bitmap ? MNG_TRUE : MNG_FALSE;
}
