bool Image::SaveJPG(const String & fileName, int quality)
{
FileSystem* fileSystem = GetSubsystem<FileSystem>();
if (fileSystem && !fileSystem->CheckAccess(GetPath(fileName)))
{
LOGERROR("Access denied to " + fileName);
return false;
}
if (IsCompressed())
{
LOGERROR("Can not save compressed image to JPG");
return false;
}
if (data_)
return jo_write_jpg(fileName.CString(), data_.Get(), width_, height_, components_, quality) != 0;
else
return false;
}
bool _imageFile::writeBitmap( const _bitmap& source , _optValue<_mimeType> mimeType2write , _optValue<_imageFileCompression> compression )
{
if( !source.isValid() )
return false;
bool result = false;
_mimeType mime = mimeType2write.isValid() ? (_mimeType)mimeType2write : this->getRealMime();
// If file doesn't exist already, create it!
this->create();
switch( mime )
{
case _mime::image_bmp:
GenericBMPEncoder::encode( this->getFileName().c_str() , source.getWidth() , source.getHeight() , source.getBitmap() );
break;
case _mime::image_png:
{
YsRawPngEncoder* encoder = new YsRawPngEncoder();
if( compression.isValid() && (_imageFileCompression)compression == _imageFileCompression::none )
encoder->SetDontCompress(1);
_u32 numberPixels = source.getWidth()*source.getHeight();
_u8* buffer = new _u8[numberPixels*4];
_u8* tempBuffer = buffer;
_pixelArray data = source.getBitmap();
do {
_color col = _color(*data++);
tempBuffer[0] = col.getR()<<3;
tempBuffer[1] = col.getG()<<3;
tempBuffer[2] = col.getB()<<3;
tempBuffer[3] = col.getAlpha()<<7; // Expand 1bit Alpha to 8bits
tempBuffer+=4;
} while( --numberPixels > 0 );
result = encoder->EncodeToFile( this->getFileName().c_str() , source.getWidth() , source.getHeight() , 8 /*8bit per Channel*/, 6 /*True-Color with Alpha*/ , buffer );
delete[] buffer;
delete encoder;
break;
}
case _mime::image_gif:
{
// Create palette with 256 entries
_colorPalette palette = _colorPalette::fromBitmap( source );
palette.downsample( 256 );
// Open File for writing
FILE* file = fopen( this->getFileName().c_str() , "wb+" );
// Get Colors in the palette
_vector<_color> colors = palette.getColors();
_s16 transparentIndex = palette.hasTransparentColor() ? colors.size() - 1 : -1;
// Predefines...
_u16 numColors = colors.size();
_u32 numPixels = source.getWidth()*source.getHeight();
_u8* paletteBuffer = new _u8[numColors*3];
_u8* imageBuffer = new _u8[numPixels];
// Convert palette to _u8[3]
for( int i = 0 ; i < numColors ; i++ ) {
_color col = colors[i];
paletteBuffer[i*3+0] = col.getR()<<3;
paletteBuffer[i*3+1] = col.getG()<<3;
paletteBuffer[i*3+2] = col.getB()<<3;
}
// Convert image to indexed format
_pixelArray data = source.getBitmap();
for( _u32 i = 0 ; i < numPixels; i++ )
imageBuffer[i] = palette.getClosestColor(*data++);
// Save gif!
result = gif_write( file , imageBuffer , source.getWidth() , source.getHeight() , paletteBuffer , numColors , transparentIndex );
delete[] paletteBuffer;
delete[] imageBuffer;
fclose( file );
break;
}
case _mime::image_jpeg:
{
_u32 numberPixels = source.getWidth()*source.getHeight();
_u8* buffer = new _u8[numberPixels*3];
_u8* tempBuffer = buffer;
_pixelArray data = source.getBitmap();
do {
_color col = _color(*data++);
tempBuffer[0] = col.getR()<<3;
tempBuffer[1] = col.getG()<<3;
tempBuffer[2] = col.getB()<<3;
tempBuffer += 3;
} while( --numberPixels > 0 );
int quality = compression.isValid() ? (int)(_imageFileCompression)compression : 90; // Set Quality
result = jo_write_jpg( this->getFileName().c_str() , buffer , source.getWidth() , source.getHeight() , 3 , quality );
delete[] buffer;
}
default:
break;
}
return result;
}