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// VIPS connection wrapper
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifndef VIPS_VCONNECTION_H
#define VIPS_VCONNECTION_H
#include <vips/vips.h>
VIPS_NAMESPACE_START
/**
* A generic source object. These supply a stream of bytes that loaders can
* use to fetch image files, see VImage::new_from_source().
*
* Methods let you can connect a source up to memory, a file or
* a file descriptor. Use vips::VSourceCustom to implement custom sources
* using GObject signals.
*/
class VSource : public VObject {
public:
/**
* Wrap a VSource around an underlying VipsSource object.
*/
explicit VSource(VipsSource *input, VSteal steal = STEAL)
: VObject((VipsObject *) input, steal)
{
}
/**
* Make a new VSource from a file descriptor.
*/
static VSource
new_from_descriptor(int descriptor);
/**
* Make a new VSource from a file on disc.
*/
static VSource
new_from_file(const char *filename);
/**
* Make a new VSource from a binary object.
*/
static VSource
new_from_blob(VipsBlob *blob);
/**
* Make a new VSource from an area of memory.
*/
static VSource
new_from_memory(const void *data, size_t size);
/**
* Make a new VSource from a set of options encoded as a string. See
* vips_source_new().
*/
static VSource
new_from_options(const char *options);
/**
* Get a pointer to the underlying VipsSoure object.
*/
VipsSource *
get_source() const
{
return (VipsSource *) VObject::get_object();
}
};
/**
* A generic target object. Savers can use these to write a stream of bytes
* somewhere, see VImage::write_to_target().
*
* Methods let you can connect a target up to memory, a file or
* a file descriptor. Use vips::VTargetCustom to implement custom targets
* using GObject signals.
*/
class VTarget : public VObject {
public:
/**
* Wrap a VTarget around an underlying VipsTarget object.
*/
explicit VTarget(VipsTarget *output, VSteal steal = STEAL)
: VObject((VipsObject *) output, steal)
{
}
/**
* Make a new VTarget which, when written to, will write to a file
* descriptor.
*/
static VTarget
new_to_descriptor(int descriptor);
/**
* Make a new VTarget which, when written to, will write to a file.
*/
static VTarget new_to_file(const char *filename);
/**
* Make a new VTarget which, when written to, will write to a file
* descriptor.
*/
static VTarget new_to_memory();
/**
* Get a pointer to the underlying VipsTarget object.
*/
VipsTarget *
get_target() const
{
return (VipsTarget *) VObject::get_object();
}
};
VIPS_NAMESPACE_END
#endif /*VIPS_VCONNECTION_H*/