Object c_Gmagick::t_setcompressionquality(int64 quality) {
INSTANCE_METHOD_INJECTION_BUILTIN(Gmagick, Gmagick::setcompressionquality);
checkNotEmpty();
int result = MagickSetCompressionQuality(magick_wand, quality);
checkResult(result);
return this;
}
//==============================================================================
// We don't want to use the saving function of QImage, since this requires the
// format plugins to be shipped.
bool ptImageHelper::DumpImage(QImage* AImage, const QString AFileName) {
long unsigned int Width = AImage->width();
long unsigned int Height = AImage->height();
MagickWand *mw;
mw = NewMagickWand();
MagickSetSize(mw, Width, Height);
MagickReadImage(mw,"xc:white");
MagickSetImageFormat(mw,"BGRA");
MagickSetImageDepth(mw,8);
MagickSetImageType(mw,TrueColorType);
MagickSetImagePixels(mw,0,0,Width,Height,"BGRA",CharPixel,(unsigned char*) AImage->bits());
MagickSetImageDepth(mw,8);
MagickSetImageFormat(mw,"RGB");
MagickSetCompressionQuality(mw,95);
MagickSetImageCompression(mw, LZWCompression);
bool Result = MagickWriteImage(mw, AFileName.toLocal8Bit().data());
DestroyMagickWand(mw);
return Result;
}
int convert_quality (MagickWand *output, uint32_t quality) {
if (!quality) return MagickPass;
return MagickSetCompressionQuality(output, quality);
}
// Write Image
bool ptImage::ptGMCWriteImage(const char* FileName,
const short Format,
const int Quality,
const int Sampling,
const int Resolution,
const char* ColorProfileFileName,
const int Intent) {
long unsigned int Width = m_Width;
long unsigned int Height = m_Height;
MagickWand *mw;
mw = NewMagickWand();
MagickSetSize(mw, Width, Height);
MagickReadImage(mw,"xc:white");
MagickSetImageFormat(mw,"RGB");
MagickSetImageDepth(mw,16);
MagickSetImageType(mw,TrueColorType);
MagickSetImagePixels(mw,0,0,Width,Height,"RGB",ShortPixel,(unsigned char*) m_Image);
// Color profile
// Color profile in PNG is not supported, due to limitations in imagemagick
if (ColorProfileFileName != NULL) {
FILE* pFile = fopen (ColorProfileFileName, "rb" );
if (pFile==NULL) {
ptLogError(ptError_FileOpen,FileName);
exit(EXIT_FAILURE);
}
fseek (pFile , 0 , SEEK_END);
long lSize = ftell (pFile);
rewind (pFile);
uint8_t* pchBuffer = (uint8_t*) CALLOC(lSize,sizeof(uint8_t));
ptMemoryError(pchBuffer,__FILE__,__LINE__);
size_t RV = fread (pchBuffer, 1, lSize, pFile);
if (RV != (size_t) lSize) {
ptLogError(ptError_FileOpen,FileName);
exit(EXIT_FAILURE);
}
MagickSetImageProfile(mw,"ICC",pchBuffer,lSize);
FCLOSE (pFile);
FREE (pchBuffer);
}
// Redering intent
switch(Intent) {
case 0:
MagickSetImageRenderingIntent(mw,PerceptualIntent);
break;
case 1:
MagickSetImageRenderingIntent(mw,RelativeIntent);
break;
case 2:
MagickSetImageRenderingIntent(mw,SaturationIntent);
break;
case 3:
MagickSetImageRenderingIntent(mw,AbsoluteIntent);
break;
default:
assert(0);
}
// Depth
if ((Format==ptSaveFormat_TIFF8) ||
(Format==ptSaveFormat_PPM8) ||
(Format==ptSaveFormat_JPEG) ||
(Format==ptSaveFormat_PNG)) {
MagickSetImageDepth(mw,8);
}
// Jpeg Sampling
double factors111[3] = {1.0,1.0,1.0};
double factors211[3] = {2.0,1.0,1.0};
if (Format==ptSaveFormat_JPEG) {
if (Sampling==ptSaveSampling_111) {
MagickSetSamplingFactors(mw,3,factors111);
} else {
MagickSetSamplingFactors(mw,3,factors211);
}
}
// Quality
if (Format==ptSaveFormat_PNG || Format==ptSaveFormat_PNG16)
MagickSetCompressionQuality(mw, floor((double) Quality/10.0)*10+5);
else
MagickSetCompressionQuality(mw,Quality);
// Compression
if ((Format==ptSaveFormat_TIFF8) ||
(Format==ptSaveFormat_TIFF16)) {
MagickSetImageCompression(mw, LZWCompression);
}
// Resolution
MagickSetImageUnits(mw, PixelsPerInchResolution);
MagickSetImageResolution(mw, Resolution, Resolution);
bool Result = MagickWriteImage(mw, FileName);
DestroyMagickWand(mw);
return Result;
}
