/*
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% P i x e l S y n c I t e r a t o r %
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% PixelSyncIterator() syncs the pixel iterator.
%
% The format of the PixelSyncIterator method is:
%
% MagickBooleanType PixelSyncIterator(PixelIterator *iterator)
%
% A description of each parameter follows:
%
% o iterator: the pixel iterator.
%
*/
WandExport MagickBooleanType PixelSyncIterator(PixelIterator *iterator)
{
MagickBooleanType
status;
register ssize_t
x;
register Quantum
*_magickcore_restrict pixels;
assert(iterator != (const PixelIterator *) NULL);
assert(iterator->signature == MagickWandSignature);
if (iterator->debug != MagickFalse)
(void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name);
status=SetCacheViewStorageClass(iterator->view,DirectClass,
iterator->exception);
if (status == MagickFalse)
return(MagickFalse);
pixels=GetCacheViewAuthenticPixels(iterator->view,iterator->region.x,
iterator->region.y+iterator->y,iterator->region.width,1,
iterator->exception);
if (pixels == (Quantum *) NULL)
return(MagickFalse);
for (x=0; x < (ssize_t) iterator->region.width; x++)
{
PixelGetQuantumPixel(GetCacheViewImage(iterator->view),
iterator->pixel_wands[x],pixels);
pixels+=GetPixelChannels(GetCacheViewImage(iterator->view));
}
if (SyncCacheViewAuthenticPixels(iterator->view,iterator->exception) == MagickFalse)
return(MagickFalse);
return(MagickTrue);
}
MAGICK_NET_EXPORT void PixelCollection_SetArea(CacheView *instance, const size_t x, const size_t y, const size_t width, const size_t height, const Quantum *values, const size_t length, ExceptionInfo **exception)
{
const Quantum
*q;
const Image
*image;
size_t
len,
r,
size;
Quantum
*pixels;
MAGICK_NET_GET_EXCEPTION;
image = GetCacheViewImage(instance);
q = values;
size = image->number_channels*width;
for (r = 0; r < height; r++)
{
pixels = QueueCacheViewAuthenticPixels(instance, x, y + r, width, 1, exceptionInfo);
if (pixels == (Quantum *)NULL)
break;
len = length - (size*r);
memcpy(pixels, q, (size < len ? size : len)*sizeof(*pixels));
if (SyncCacheViewAuthenticPixels(instance, exceptionInfo) == MagickFalse)
break;
if (size > len)
break;
q += size;
}
MAGICK_NET_SET_EXCEPTION;
}
MAGICK_NET_EXPORT unsigned short *PixelCollection_ToShortArray(const CacheView *instance, const size_t x, const size_t y, const size_t width, const size_t height, const char *mapping, ExceptionInfo **exception)
{
ExportStart(unsigned short);
result = AcquireMagickMemory(length);
MAGICK_NET_GET_EXCEPTION;
ExportImagePixels(GetCacheViewImage(instance), x, y, width, height, mapping, ShortPixel, result, exceptionInfo);
MAGICK_NET_SET_EXCEPTION;
return result;
}
