/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% V a l i d a t e I m a g e F o r m a t s O n D i s k %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ValidateImageFormatsOnDisk() validates the ImageMagick image formats on disk
% and returns the number of validation tests that passed and failed.
%
% The format of the ValidateImageFormatsOnDisk method is:
%
% unsigned long ValidateImageFormatsOnDisk(ImageInfo *image_info,
% const char *reference_filename,const char *output_filename,
% unsigned long *fail,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o reference_filename: the reference image filename.
%
% o output_filename: the output image filename.
%
% o fail: return the number of validation tests that pass.
%
% o exception: return any errors or warnings in this structure.
%
*/
static unsigned long ValidateImageFormatsOnDisk(ImageInfo *image_info,
const char *reference_filename,const char *output_filename,
unsigned long *fail,ExceptionInfo *exception)
{
char
size[MaxTextExtent];
const MagickInfo
*magick_info;
double
distortion,
fuzz;
Image
*difference_image,
*reference_image,
*reconstruct_image;
MagickBooleanType
status;
register long
i,
j;
unsigned long
test;
test=0;
(void) fprintf(stdout,"validate image formats on disk:\n");
for (i=0; reference_formats[i].magick != (char *) NULL; i++)
{
magick_info=GetMagickInfo(reference_formats[i].magick,exception);
if ((magick_info == (const MagickInfo *) NULL) ||
(magick_info->decoder == (DecodeImageHandler *) NULL) ||
(magick_info->encoder == (EncodeImageHandler *) NULL))
continue;
for (j=0; reference_types[j].type != UndefinedType; j++)
{
/*
Generate reference image.
*/
CatchException(exception);
(void) fprintf(stdout," test %lu: %s/%s/%lu-bits",test++,
reference_formats[i].magick,MagickOptionToMnemonic(MagickTypeOptions,
reference_types[j].type),reference_types[j].depth);
(void) CopyMagickString(image_info->filename,reference_filename,
MaxTextExtent);
reference_image=ReadImage(image_info,exception);
if (reference_image == (Image *) NULL)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
continue;
}
/*
Write reference image.
*/
(void) FormatMagickString(size,MaxTextExtent,"%lux%lu",
reference_image->columns,reference_image->rows);
(void) CloneString(&image_info->size,size);
image_info->depth=reference_types[j].depth;
(void) FormatMagickString(reference_image->filename,MaxTextExtent,"%s:%s",
reference_formats[i].magick,output_filename);
status=SetImageType(reference_image,reference_types[j].type);
InheritException(exception,&reference_image->exception);
if (status == MagickFalse)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
reference_image=DestroyImage(reference_image);
continue;
}
status=SetImageDepth(reference_image,reference_types[j].depth);
InheritException(exception,&reference_image->exception);
if (status == MagickFalse)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
reference_image=DestroyImage(reference_image);
continue;
}
status=WriteImage(image_info,reference_image);
InheritException(exception,&reference_image->exception);
reference_image=DestroyImage(reference_image);
if (status == MagickFalse)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
continue;
}
/*
Read reference image.
*/
(void) FormatMagickString(image_info->filename,MaxTextExtent,"%s:%s",
reference_formats[i].magick,output_filename);
reference_image=ReadImage(image_info,exception);
if (reference_image == (Image *) NULL)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
continue;
}
/*
Write reference image.
*/
(void) FormatMagickString(reference_image->filename,MaxTextExtent,"%s:%s",
reference_formats[i].magick,output_filename);
reference_image->depth=reference_types[j].depth;
status=WriteImage(image_info,reference_image);
InheritException(exception,&reference_image->exception);
if (status == MagickFalse)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
reference_image=DestroyImage(reference_image);
continue;
}
/*
Read reconstruct image.
*/
(void) FormatMagickString(image_info->filename,MaxTextExtent,"%s:%s",
reference_formats[i].magick,output_filename);
reconstruct_image=ReadImage(image_info,exception);
if (reconstruct_image == (Image *) NULL)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
reference_image=DestroyImage(reference_image);
continue;
}
/*
Compare reference to reconstruct image.
*/
fuzz=0.0;
if (reference_formats[i].fuzz != 0.0)
fuzz=reference_formats[i].fuzz;
#if defined(MAGICKCORE_HDRI_SUPPORT)
fuzz+=0.003;
#endif
if (reference_image->colorspace != RGBColorspace)
fuzz+=0.3;
fuzz+=MagickEpsilon;
difference_image=CompareImageChannels(reference_image,reconstruct_image,
AllChannels,MeanSquaredErrorMetric,&distortion,exception);
reconstruct_image=DestroyImage(reconstruct_image);
reference_image=DestroyImage(reference_image);
if (difference_image == (Image *) NULL)
{
(void) fprintf(stdout,"... fail @ %s/%s/%lu.\n",GetMagickModule());
(*fail)++;
continue;
}
difference_image=DestroyImage(difference_image);
if ((distortion/QuantumRange) > fuzz)
{
(void) fprintf(stdout,"... fail (with distortion %g).\n",distortion/
QuantumRange);
(*fail)++;
continue;
}
(void) fprintf(stdout,"... pass.\n");
}
}
(void) fprintf(stdout," summary: %lu subtests; %lu passed; %lu failed.\n",
test,test-(*fail),*fail);
return(test);
}
/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e H I S T O G R A M I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % Method WriteHISTOGRAMImage writes an image to a file in Histogram format. % The image shows a histogram of the color (or gray) values in the image. The % image consists of three overlaid histograms: a red one for the red channel, % a green one for the green channel, and a blue one for the blue channel. The % image comment contains a list of unique pixel values and the number of times % each occurs in the image. % % This method is strongly based on a similar one written by % [email protected] which in turn is based on ppmhistmap of netpbm. % % The format of the WriteHISTOGRAMImage method is: % % unsigned int WriteHISTOGRAMImage(const ImageInfo *image_info, % Image *image) % % A description of each parameter follows. % % o status: Method WriteHISTOGRAMImage return True if the image is written. % False is returned is there is a memory shortage or if the image file % fails to write. % % o image_info: Specifies a pointer to a ImageInfo structure. % % o image: A pointer to an Image structure. % % */ static unsigned int WriteHISTOGRAMImage(const ImageInfo *image_info, Image *image) { #define HistogramDensity "256x200" char filename[MaxTextExtent]; double scale; FILE *file; Image *histogram_image; long *blue, *green, maximum, *red; long y; RectangleInfo geometry; register const PixelPacket *p; register long x; register PixelPacket *q, *r; unsigned int status; unsigned long length; /* Allocate histogram image. */ assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); assert(image != (Image *) NULL); assert(image->signature == MagickSignature); (void) SetImageDepth(image,image->depth); SetGeometry(image,&geometry); if (image_info->density == (char *) NULL) (void) GetMagickGeometry(HistogramDensity,&geometry.x,&geometry.y, &geometry.width,&geometry.height); else (void) GetMagickGeometry(image_info->density,&geometry.x,&geometry.y, &geometry.width,&geometry.height); histogram_image=CloneImage(image,geometry.width,geometry.height,True, &image->exception); if (histogram_image == (Image *) NULL) ThrowWriterException(ResourceLimitError,MemoryAllocationFailed,image); (void) SetImageType(histogram_image,TrueColorType); /* Allocate histogram count arrays. */ length=Max(ScaleQuantumToChar(MaxRGB)+1,histogram_image->columns); red=MagickAllocateMemory(long *,length*sizeof(long)); green=MagickAllocateMemory(long *,length*sizeof(long)); blue=MagickAllocateMemory(long *,length*sizeof(long)); if ((red == (long *) NULL) || (green == (long *) NULL) || (blue == (long *) NULL)) { DestroyImage(histogram_image); ThrowWriterException(ResourceLimitError,MemoryAllocationFailed,image) }
