C++ AcquireExceptionInfo函数代码示例

/*
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%   R e a d I m a g e s                                                       %
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%
%  ReadImages() reads one or more images and returns them as an image list.
%
%  The format of the ReadImage method is:
%
%      Image *ReadImages(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *ReadImages(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  char
    filename[MaxTextExtent];

  Image
    *image,
    *images;

  ImageInfo
    *read_info;

  /*
    Read image list from a file.
  */
  assert(image_info != (ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  (void) InterpretImageFilename(image_info,(Image *) NULL,image_info->filename,
    (int) image_info->scene,filename);
  if (LocaleCompare(filename,image_info->filename) != 0)
    {
      ExceptionInfo
        *sans;

      ssize_t
        extent,
        scene;

      /*
        Images of the form image-%d.png[1-5].
      */
      read_info=CloneImageInfo(image_info);
      sans=AcquireExceptionInfo();
      (void) SetImageInfo(read_info,0,sans);
      sans=DestroyExceptionInfo(sans);
      (void) CopyMagickString(filename,read_info->filename,MaxTextExtent);
      images=NewImageList();
      extent=(ssize_t) (read_info->scene+read_info->number_scenes);
      for (scene=(ssize_t) read_info->scene; scene < (ssize_t) extent; scene++)
      {
        (void) InterpretImageFilename(image_info,(Image *) NULL,filename,(int)
          scene,read_info->filename);
        image=ReadImage(read_info,exception);
        if (image == (Image *) NULL)
          continue;
        AppendImageToList(&images,image);
      }
      read_info=DestroyImageInfo(read_info);
      return(images);
    }
  return(ReadImage(image_info,exception));
}

/*
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%   N e w P i x e l I t e r a t o r                                           %
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%
%  NewPixelIterator() returns a new pixel iterator.
%
%  The format of the NewPixelIterator method is:
%
%      PixelIterator *NewPixelIterator(MagickWand *wand)
%
%  A description of each parameter follows:
%
%    o wand: the magick wand.
%
*/
WandExport PixelIterator *NewPixelIterator(MagickWand *wand)
{
  const char
    *quantum;

  ExceptionInfo
    *exception;

  Image
    *image;

  PixelIterator
    *iterator;

  size_t
    depth;

  CacheView
    *view;

  depth=MAGICKCORE_QUANTUM_DEPTH;
  quantum=GetMagickQuantumDepth(&depth);
  if (depth != MAGICKCORE_QUANTUM_DEPTH)
    ThrowWandFatalException(WandError,"QuantumDepthMismatch",quantum);
  assert(wand != (MagickWand *) NULL);
  image=GetImageFromMagickWand(wand);
  if (image == (Image *) NULL)
    return((PixelIterator *) NULL);
  exception=AcquireExceptionInfo();
  view=AcquireVirtualCacheView(image,exception);
  if (view == (CacheView *) NULL)
    return((PixelIterator *) NULL);
  iterator=(PixelIterator *) AcquireMagickMemory(sizeof(*iterator));
  if (iterator == (PixelIterator *) NULL)
    ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed",
      GetExceptionMessage(errno));
  (void) ResetMagickMemory(iterator,0,sizeof(*iterator));
  iterator->id=AcquireWandId();
  (void) FormatLocaleString(iterator->name,MaxTextExtent,"%s-%.20g",
    PixelIteratorId,(double) iterator->id);
  iterator->exception=exception;
  iterator->view=view;
  SetGeometry(image,&iterator->region);
  iterator->region.width=image->columns;
  iterator->region.height=image->rows;
  iterator->region.x=0;
  iterator->region.y=0;
  iterator->pixel_wands=NewPixelWands(iterator->region.width);
  iterator->y=0;
  iterator->debug=IsEventLogging();
  if (iterator->debug != MagickFalse)
    (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name);
  iterator->signature=WandSignature;
  return(iterator);
}

/*
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%   N e w P i x e l R e g i o n I t e r a t o r                               %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  NewPixelRegionIterator() returns a new pixel iterator.
%
%  The format of the NewPixelRegionIterator method is:
%
%      PixelIterator NewPixelRegionIterator(MagickWand *wand,const long x,
%        const long y,const unsigned long width,const unsigned long height)
%
%  A description of each parameter follows:
%
%    o wand: the magick wand.
%
%    o x,y,columns,rows:  These values define the perimeter of a region of
%      pixels.
%
*/
WandExport PixelIterator *NewPixelRegionIterator(MagickWand *wand,const long x,
  const long y,const unsigned long width,const unsigned long height)
{
  const char
    *quantum;

  Image
    *image;

  PixelIterator
    *iterator;

  unsigned long
    depth;

  CacheView
    *view;

  assert(wand != (MagickWand *) NULL);
  depth=MAGICKCORE_QUANTUM_DEPTH;
  quantum=GetMagickQuantumDepth(&depth);
  if (depth != MAGICKCORE_QUANTUM_DEPTH)
    ThrowWandFatalException(WandError,"QuantumDepthMismatch",quantum);
  if ((width == 0) || (width == 0))
    ThrowWandFatalException(WandError,"ZeroRegionSize",quantum);
  image=GetImageFromMagickWand(wand);
  if (image == (Image *) NULL)
    return((PixelIterator *) NULL);
  view=AcquireCacheView(image);
  if (view == (CacheView *) NULL)
    return((PixelIterator *) NULL);
  iterator=(PixelIterator *) AcquireMagickMemory(sizeof(*iterator));
  if (iterator == (PixelIterator *) NULL)
    ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed",
      wand->name);
  (void) ResetMagickMemory(iterator,0,sizeof(*iterator));
  iterator->id=AcquireWandId();
  (void) FormatMagickString(iterator->name,MaxTextExtent,"%s-%lu",
    PixelIteratorId,iterator->id);
  iterator->exception=AcquireExceptionInfo();
  iterator->view=view;
  SetGeometry(image,&iterator->region);
  iterator->region.width=width;
  iterator->region.height=height;
  iterator->region.x=x;
  iterator->region.y=y;
  iterator->pixel_wands=NewPixelWands(iterator->region.width);
  iterator->y=0;
  iterator->debug=IsEventLogging();
  if (iterator->debug != MagickFalse)
    (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name);
  iterator->signature=WandSignature;
  return(iterator);
}

/*
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%  M a i n                                                                    %
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%
*/
int main(int argc,char **argv)
{
  char
    *option,
    *text;

  ExceptionInfo
    *exception;

  ImageInfo
    *image_info;

  MagickBooleanType
    regard_warnings,
    status;

  register long
    i;

  MagickCoreGenesis(*argv,MagickTrue);
  exception=AcquireExceptionInfo();
  regard_warnings=MagickFalse;
  for (i=1; i < (long) argc; i++)
  {
    option=argv[i];
    if ((strlen(option) == 1) || ((*option != '-') && (*option != '+')))
      continue;
    if (LocaleCompare("debug",option+1) == 0)
      (void) SetLogEventMask(argv[++i]);
    if (LocaleCompare("regard-warnings",option+1) == 0)
      regard_warnings=MagickTrue;
  }
  image_info=AcquireImageInfo();
  text=(char *) NULL;
  status=CompareImageCommand(image_info,argc,argv,&text,exception);
  if ((status == MagickFalse) || (exception->severity != UndefinedException))
    {
      if ((exception->severity < ErrorException) &&
          (regard_warnings == MagickFalse))
        status=MagickTrue;
      CatchException(exception);
    }
  if (text != (char *) NULL)
    {
      (void) fputs(text,stdout);
      (void) fputc('\n',stdout);
      text=DestroyString(text);
    }
  image_info=DestroyImageInfo(image_info);
  exception=DestroyExceptionInfo(exception);
  MagickCoreTerminus();
  return(status == MagickFalse ? 1 : 0);
}

/*
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%   G e n e r a t e S e c r e t K e y                                         %
%                                                                             %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  GenerateSecretKey() returns WizardTrue if a key is generated and successfully
%  added to the secret key ring.
%
%  The format of the GenerateSecretKey method is:
%
%      WizardBooleanType GenerateSecretKey(SecretInfo *secret_info,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o secret_info: The secret info.
%
%    o exception: Return any errors or warnings in this structure.
%
*/
WizardExport WizardBooleanType GenerateSecretKey(SecretInfo *secret_info,
  ExceptionInfo *exception)
{
  ExceptionInfo
    *sans;

  WizardBooleanType
    status;

  StringInfo
    *key,
    *phrase;

  (void) LogWizardEvent(TraceEvent,GetWizardModule(),"...");
  WizardAssert(AuthenticateDomain,secret_info != (SecretInfo *) NULL);
  WizardAssert(AuthenticateDomain,secret_info->signature == WizardSignature);
  WizardAssert(AuthenticateDomain,exception != (ExceptionInfo *) NULL);
  if (secret_info->passphrase == (char *) NULL)
    phrase=GetPassphrase(exception);
  else
    phrase=FileToStringInfo(secret_info->passphrase,~0,exception);
  if (phrase == (StringInfo *) NULL)
    return(WizardFalse);
  sans=AcquireExceptionInfo();
  do
  {
    if (secret_info->key != (StringInfo *) NULL)
      secret_info->key=DestroyStringInfo(secret_info->key);
    secret_info->key=GetRandomKey(secret_info->random_info,
      secret_info->key_length/8);
    ConstructHMAC(secret_info->hmac_info,phrase,secret_info->key);
    if (secret_info->id != (StringInfo *) NULL)
      secret_info->id=DestroyStringInfo(secret_info->id);
    secret_info->id=CloneStringInfo(GetHMACDigest(secret_info->hmac_info));
    SetKeyringId(secret_info->keyring_info,secret_info->id);
    status=ExportKeyringKey(secret_info->keyring_info,sans);
  } while (status != WizardFalse);
  sans=DestroyExceptionInfo(sans);
  SetKeyringKey(secret_info->keyring_info,secret_info->key);
  SetKeyringNonce(secret_info->keyring_info,secret_info->nonce);
  SetCipherKey(secret_info->cipher_info,phrase);
  SetCipherNonce(secret_info->cipher_info,GetKeyringNonce(
    secret_info->keyring_info));
  key=CloneStringInfo(GetKeyringKey(secret_info->keyring_info));
  (void) EncipherCipher(secret_info->cipher_info,key);
  SetKeyringKey(secret_info->keyring_info,key);
  status=ImportKeyringKey(secret_info->keyring_info,exception);
  phrase=DestroyStringInfo(phrase);
  key=DestroyStringInfo(key);
  return(WizardTrue);
}

/*
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%   I s R i g h t s A u t h o r i z e d                                       %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IsRightsAuthorized() returns MagickTrue if the policy authorizes the
%  requested rights for the specified domain.
%
%  The format of the IsRightsAuthorized method is:
%
%      MagickBooleanType IsRightsAuthorized(const PolicyDomain domain,
%        const PolicyRights rights,const char *pattern)
%
%  A description of each parameter follows:
%
%    o domain: the policy domain.
%
%    o rights: the policy rights.
%
%    o pattern: the coder, delegate, filter, or path pattern.
%
*/
MagickExport MagickBooleanType IsRightsAuthorized(const PolicyDomain domain,
  const PolicyRights rights,const char *pattern)
{
  const PolicyInfo
    *policy_info;

  ExceptionInfo
    *exception;

  MagickBooleanType
    authorized;

  register PolicyInfo
    *p;

  (void) LogMagickEvent(PolicyEvent,GetMagickModule(),
    "Domain: %s; rights=%s; pattern=\"%s\" ...",
    CommandOptionToMnemonic(MagickPolicyDomainOptions,domain),
    CommandOptionToMnemonic(MagickPolicyRightsOptions,rights),pattern);
  exception=AcquireExceptionInfo();
  policy_info=GetPolicyInfo("*",exception);
  exception=DestroyExceptionInfo(exception);
  if (policy_info == (PolicyInfo *) NULL)
    return(MagickTrue);
  authorized=MagickTrue;
  LockSemaphoreInfo(policy_semaphore);
  ResetLinkedListIterator(policy_list);
  p=(PolicyInfo *) GetNextValueInLinkedList(policy_list);
  while ((p != (PolicyInfo *) NULL) && (authorized != MagickFalse))
  {
    if ((p->domain == domain) &&
        (GlobExpression(pattern,p->pattern,MagickFalse) != MagickFalse))
      {
        if (((rights & ReadPolicyRights) != 0) &&
            ((p->rights & ReadPolicyRights) == 0))
          authorized=MagickFalse;
        if (((rights & WritePolicyRights) != 0) &&
            ((p->rights & WritePolicyRights) == 0))
          authorized=MagickFalse;
        if (((rights & ExecutePolicyRights) != 0) &&
            ((p->rights & ExecutePolicyRights) == 0))
          authorized=MagickFalse;
      }
    p=(PolicyInfo *) GetNextValueInLinkedList(policy_list);
  }
  UnlockSemaphoreInfo(policy_semaphore);
  return(authorized);
}

/**
 * Convert a color name to a PixelPacket
 *
 * No Ruby usage (internal function)
 *
 * @param color the PixelPacket to modify
 * @param name_arg the coor name
 * @throw ArgumentError
 */
static void
Color_Name_to_PixelPacket(PixelPacket *color, VALUE name_arg)
{
    MagickBooleanType okay;
    char *name;
    ExceptionInfo *exception;

    exception = AcquireExceptionInfo();
    name = StringValuePtr(name_arg);
    okay = QueryColorDatabase(name, color, exception);
    (void) DestroyExceptionInfo(exception);
    if (!okay)
    {
        rb_raise(rb_eArgError, "invalid color name %s", name);
    }
}

/**
 * Equivalent to convert's -layers composite option.
 *
 * Ruby usage:
 *   - @verbatim ImageList#composite_layers(images) @endverbatim
 *   - @verbatim ImageList#composite_layers(images,operator) @endverbatim
 *
 * Notes:
 *   - Default operator is OverCompositeOp
 *
 * @param argc number of input arguments
 * @param argv array of input arguments
 * @param self this object
 * @return a new imagelist
 * @see mogrify.c in ImageMagick
 */
VALUE
ImageList_composite_layers(int argc, VALUE *argv, VALUE self)
{
    VALUE source_images;
    Image *dest, *source, *new_images;
    RectangleInfo geometry;
    CompositeOperator operator = OverCompositeOp;
    ExceptionInfo *exception;

    switch (argc)
    {
        case 2:
            VALUE_TO_ENUM(argv[1], operator, CompositeOperator);
        case 1:
            source_images = argv[0];
            break;
        default:
            rb_raise(rb_eArgError, "wrong number of arguments (expected 1 or 2, got %d)", argc);
            break;
    }

    // Convert ImageLists to image sequences.
    dest = images_from_imagelist(self);
    new_images = clone_imagelist(dest);
    rm_split(dest);

    source = images_from_imagelist(source_images);

    SetGeometry(new_images,&geometry);
    (void) ParseAbsoluteGeometry(new_images->geometry, &geometry);

    geometry.width  = source->page.width != 0 ? source->page.width : source->columns;
    geometry.height = source->page.height != 0 ? source->page.height : source->rows;
    GravityAdjustGeometry(new_images->page.width  != 0 ? new_images->page.width  : new_images->columns
                        , new_images->page.height != 0 ? new_images->page.height : new_images->rows
                        , new_images->gravity, &geometry);

    exception = AcquireExceptionInfo();
    CompositeLayers(new_images, operator, source, geometry.x, geometry.y, exception);
    rm_split(source);
    rm_check_exception(exception, new_images, DestroyOnError);
    (void) DestroyExceptionInfo(exception);

    RB_GC_GUARD(source_images);

    return rm_imagelist_from_images(new_images);
}

/**
 * Compare each image with the next in a sequence and returns the maximum
 * bounding region of any pixel differences it discovers.
 *
 * Ruby usage:
 *   - @verbatim ImageList#deconstruct @endverbatim
 *
 * @param self this object
 * @return a new imagelist
 */
VALUE
ImageList_deconstruct(VALUE self)
{
    Image *new_images, *images;
    ExceptionInfo *exception;

    images = images_from_imagelist(self);
    exception = AcquireExceptionInfo();
    new_images = DeconstructImages(images, exception);
    rm_split(images);
    rm_check_exception(exception, new_images, DestroyOnError);
    (void) DestroyExceptionInfo(exception);

    rm_ensure_result(new_images);

    return rm_imagelist_from_images(new_images);
}

/**
 * Call MontageImages.
 *
 * Ruby usage:
 *   - @verbatim ImageList#montage <{parm block}> @endverbatim
 *
 * Notes:
 *   - Creates Montage object, yields to block if present in Montage object's
 *     scope.
 *
 * @param self this object
 * @return a new image list
 */
VALUE
ImageList_montage(VALUE self)
{
    VALUE montage_obj;
    Montage *montage;
    Image *new_images, *images;
    ExceptionInfo *exception;

    // Create a new instance of the Magick::Montage class
    montage_obj = rm_montage_new();
    if (rb_block_given_p())
    {
        // Run the block in the instance's context, allowing the app to modify the
        // object's attributes.
        (void) rb_obj_instance_eval(0, NULL, montage_obj);
    }

    Data_Get_Struct(montage_obj, Montage, montage);

    images = images_from_imagelist(self);

    // If app specified a non-default composition operator, use it for all images.
    if (montage->compose != UndefinedCompositeOp)
    {
        Image *i;
        for (i = images; i; i = GetNextImageInList(i))
        {
            i->compose = montage->compose;
        }
    }

    exception = AcquireExceptionInfo();

    // MontageImage can return more than one image.
    new_images = MontageImages(images, montage->info, exception);
    rm_split(images);
    rm_check_exception(exception, new_images, DestroyOnError);
    (void) DestroyExceptionInfo(exception);

    rm_ensure_result(new_images);

    RB_GC_GUARD(montage_obj);

    return rm_imagelist_from_images(new_images);
}

/**
 * Call CoalesceImages.
 *
 * Ruby usage:
 *   - @verbatim ImageList#coalesce @endverbatim
 *
 * Notes:
 *   - Respects the delay, matte, and start_loop fields in each image.
 *
 * @param self this object
 * @return a new Image with the coalesced image sequence return stored in the
 * images array
 */
VALUE
ImageList_coalesce(VALUE self)
{
    Image *images, *new_images;
    ExceptionInfo *exception;

    // Convert the image array to an image sequence.
    images = images_from_imagelist(self);

    exception = AcquireExceptionInfo();
    new_images = CoalesceImages(images, exception);
    rm_split(images);
    rm_check_exception(exception, new_images, DestroyOnError);
    (void) DestroyExceptionInfo(exception);

    rm_ensure_result(new_images);

    return rm_imagelist_from_images(new_images);
}

/**
 * Undo the image_to_str, above.
 *
 * No Ruby usage (internal function)
 *
 * Notes:
 *   - Returns NULL if the argument is Qnil
 *
 * @param str the Ruby string to convert
 * @return Image represented by str
 * @see image_to_str
 */
static
Image *str_to_image(VALUE str)
{
    Image *image = NULL;
    Info *info;
    ExceptionInfo *exception;

    if (str != Qnil)
    {
        info = CloneImageInfo(NULL);
        exception = AcquireExceptionInfo();
        image = BlobToImage(info, RSTRING_PTR(str), RSTRING_LEN(str), exception);
        DestroyImageInfo(info);
        CHECK_EXCEPTION();
        DestroyExceptionInfo(exception);
    }

    return image;
}

int ImageWrite( struct ImageLibrary *im, Image *img, File *rootDev, const char *path )
{
	FHandler *fh = rootDev->f_FSys;
	File *rfp = (File *)fh->FileOpen( rootDev, path, "wb" );
	if( rfp != NULL )
	{
		char *buffer = NULL;
		size_t length = 0;

		
		ExceptionInfo *ei=AcquireExceptionInfo();
        ImageInfo *ii=CloneImageInfo((ImageInfo *) NULL);
								
		buffer =  ImageToBlob( ii, img, &length, ei );
		
		if( buffer == NULL )
		{
			ERROR("Cannot image to data\n");
			DestroyExceptionInfo( ei );
			DestroyImageInfo( ii );
			fh->FileClose( rootDev, rfp );
			
			return 2;
		}
		else
		{
			fh->FileWrite( rfp, buffer, length );
		}
		
		DestroyExceptionInfo( ei );
		DestroyImageInfo( ii );

		
		fh->FileClose( rootDev, rfp );
	}
	else
	{
		ERROR("Cannot open file: %s to write\n", path );
		return 1;
	}
	return 0;
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   C l o n e I m a g e V i e w                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  CloneImageView() makes a copy of the specified image view.
%
%  The format of the CloneImageView method is:
%
%      ImageView *CloneImageView(const ImageView *image_view)
%
%  A description of each parameter follows:
%
%    o image_view: the image view.
%
*/
MagickExport ImageView *CloneImageView(const ImageView *image_view)
{
  ImageView
    *clone_view;

  assert(image_view != (ImageView *) NULL);
  assert(image_view->signature == MagickSignature);
  clone_view=(ImageView *) AcquireMagickMemory(sizeof(*clone_view));
  if (clone_view == (ImageView *) NULL)
    ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
  (void) ResetMagickMemory(clone_view,0,sizeof(*clone_view));
  clone_view->description=ConstantString(image_view->description);
  clone_view->extent=image_view->extent;
  clone_view->view=CloneCacheView(image_view->view);
  clone_view->exception=AcquireExceptionInfo();
  InheritException(clone_view->exception,image_view->exception);
  clone_view->debug=image_view->debug;
  clone_view->signature=MagickSignature;
  return(clone_view);
}

/*
  We use BlobToImage to load input as an image, if successful destroy image.  
*/
extern "C" int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size) {
  Image *image;
  ImageInfo image_info;
  ExceptionInfo *exception;

  GetImageInfo(&image_info);
  exception = AcquireExceptionInfo();

  image = BlobToImage(&image_info, data, size, exception);
  if (exception->severity != UndefinedException){
    //CatchException(exception);      
  }
  if(image != (Image *) NULL){
    DestroyImage(image);
  }
  
  DestroyExceptionInfo(exception);

  return 0;
}