mirror of
https://github.com/opencv/opencv.git
synced 2024-12-01 06:49:50 +08:00
434 lines
11 KiB
C++
434 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
|
|
// Digital Ltd. LLC
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following disclaimer
|
|
// in the documentation and/or other materials provided with the
|
|
// distribution.
|
|
// * Neither the name of Industrial Light & Magic nor the names of
|
|
// its contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
|
|
#ifndef INCLUDED_IMF_CHANNEL_LIST_H
|
|
#define INCLUDED_IMF_CHANNEL_LIST_H
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// class Channel
|
|
// class ChannelList
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include <ImfName.h>
|
|
#include <ImfPixelType.h>
|
|
#include <map>
|
|
#include <set>
|
|
#include <string>
|
|
|
|
|
|
namespace Imf {
|
|
|
|
|
|
struct Channel
|
|
{
|
|
//------------------------------
|
|
// Data type; see ImfPixelType.h
|
|
//------------------------------
|
|
|
|
PixelType type;
|
|
|
|
|
|
//--------------------------------------------
|
|
// Subsampling: pixel (x, y) is present in the
|
|
// channel only if
|
|
//
|
|
// x % xSampling == 0 && y % ySampling == 0
|
|
//
|
|
//--------------------------------------------
|
|
|
|
int xSampling;
|
|
int ySampling;
|
|
|
|
|
|
//--------------------------------------------------------------
|
|
// Hint to lossy compression methods that indicates whether
|
|
// human perception of the quantity represented by this channel
|
|
// is closer to linear or closer to logarithmic. Compression
|
|
// methods may optimize image quality by adjusting pixel data
|
|
// quantization acording to this hint.
|
|
// For example, perception of red, green, blue and luminance is
|
|
// approximately logarithmic; the difference between 0.1 and 0.2
|
|
// is perceived to be roughly the same as the difference between
|
|
// 1.0 and 2.0. Perception of chroma coordinates tends to be
|
|
// closer to linear than logarithmic; the difference between 0.1
|
|
// and 0.2 is perceived to be roughly the same as the difference
|
|
// between 1.0 and 1.1.
|
|
//--------------------------------------------------------------
|
|
|
|
bool pLinear;
|
|
|
|
|
|
//------------
|
|
// Constructor
|
|
//------------
|
|
|
|
Channel (PixelType type = HALF,
|
|
int xSampling = 1,
|
|
int ySampling = 1,
|
|
bool pLinear = false);
|
|
|
|
|
|
//------------
|
|
// Operator ==
|
|
//------------
|
|
|
|
bool operator == (const Channel &other) const;
|
|
};
|
|
|
|
|
|
class ChannelList
|
|
{
|
|
public:
|
|
|
|
//--------------
|
|
// Add a channel
|
|
//--------------
|
|
|
|
void insert (const char name[],
|
|
const Channel &channel);
|
|
|
|
void insert (const std::string &name,
|
|
const Channel &channel);
|
|
|
|
//------------------------------------------------------------------
|
|
// Access to existing channels:
|
|
//
|
|
// [n] Returns a reference to the channel with name n.
|
|
// If no channel with name n exists, an Iex::ArgExc
|
|
// is thrown.
|
|
//
|
|
// findChannel(n) Returns a pointer to the channel with name n,
|
|
// or 0 if no channel with name n exists.
|
|
//
|
|
//------------------------------------------------------------------
|
|
|
|
Channel & operator [] (const char name[]);
|
|
const Channel & operator [] (const char name[]) const;
|
|
|
|
Channel & operator [] (const std::string &name);
|
|
const Channel & operator [] (const std::string &name) const;
|
|
|
|
Channel * findChannel (const char name[]);
|
|
const Channel * findChannel (const char name[]) const;
|
|
|
|
Channel * findChannel (const std::string &name);
|
|
const Channel * findChannel (const std::string &name) const;
|
|
|
|
|
|
//-------------------------------------------
|
|
// Iterator-style access to existing channels
|
|
//-------------------------------------------
|
|
|
|
typedef std::map <Name, Channel> ChannelMap;
|
|
|
|
class Iterator;
|
|
class ConstIterator;
|
|
|
|
Iterator begin ();
|
|
ConstIterator begin () const;
|
|
|
|
Iterator end ();
|
|
ConstIterator end () const;
|
|
|
|
Iterator find (const char name[]);
|
|
ConstIterator find (const char name[]) const;
|
|
|
|
Iterator find (const std::string &name);
|
|
ConstIterator find (const std::string &name) const;
|
|
|
|
|
|
//-----------------------------------------------------------------
|
|
// Support for image layers:
|
|
//
|
|
// In an image file with many channels it is sometimes useful to
|
|
// group the channels into "layers", that is, into sets of channels
|
|
// that logically belong together. Grouping channels into layers
|
|
// is done using a naming convention: channel C in layer L is
|
|
// called "L.C".
|
|
//
|
|
// For example, a computer graphic image may contain separate
|
|
// R, G and B channels for light that originated at each of
|
|
// several different virtual light sources. The channels in
|
|
// this image might be called "light1.R", "light1.G", "light1.B",
|
|
// "light2.R", "light2.G", "light2.B", etc.
|
|
//
|
|
// Note that this naming convention allows layers to be nested;
|
|
// for example, "light1.specular.R" identifies the "R" channel
|
|
// in the "specular" sub-layer of layer "light1".
|
|
//
|
|
// Channel names that don't contain a "." or that contain a
|
|
// "." only at the beginning or at the end are not considered
|
|
// to be part of any layer.
|
|
//
|
|
// layers(lns) sorts the channels in this ChannelList
|
|
// into layers and stores the names of
|
|
// all layers, sorted alphabetically,
|
|
// into string set lns.
|
|
//
|
|
// channelsInLayer(ln,f,l) stores a pair of iterators in f and l
|
|
// such that the loop
|
|
//
|
|
// for (ConstIterator i = f; i != l; ++i)
|
|
// ...
|
|
//
|
|
// iterates over all channels in layer ln.
|
|
// channelsInLayer (ln, l, p) calls
|
|
// channelsWithPrefix (ln + ".", l, p).
|
|
//
|
|
//-----------------------------------------------------------------
|
|
|
|
void layers (std::set <std::string> &layerNames) const;
|
|
|
|
void channelsInLayer (const std::string &layerName,
|
|
Iterator &first,
|
|
Iterator &last);
|
|
|
|
void channelsInLayer (const std::string &layerName,
|
|
ConstIterator &first,
|
|
ConstIterator &last) const;
|
|
|
|
|
|
//-------------------------------------------------------------------
|
|
// Find all channels whose name begins with a given prefix:
|
|
//
|
|
// channelsWithPrefix(p,f,l) stores a pair of iterators in f and l
|
|
// such that the following loop iterates over all channels whose name
|
|
// begins with string p:
|
|
//
|
|
// for (ConstIterator i = f; i != l; ++i)
|
|
// ...
|
|
//
|
|
//-------------------------------------------------------------------
|
|
|
|
void channelsWithPrefix (const char prefix[],
|
|
Iterator &first,
|
|
Iterator &last);
|
|
|
|
void channelsWithPrefix (const char prefix[],
|
|
ConstIterator &first,
|
|
ConstIterator &last) const;
|
|
|
|
void channelsWithPrefix (const std::string &prefix,
|
|
Iterator &first,
|
|
Iterator &last);
|
|
|
|
void channelsWithPrefix (const std::string &prefix,
|
|
ConstIterator &first,
|
|
ConstIterator &last) const;
|
|
|
|
//------------
|
|
// Operator ==
|
|
//------------
|
|
|
|
bool operator == (const ChannelList &other) const;
|
|
|
|
private:
|
|
|
|
ChannelMap _map;
|
|
};
|
|
|
|
|
|
//----------
|
|
// Iterators
|
|
//----------
|
|
|
|
class ChannelList::Iterator
|
|
{
|
|
public:
|
|
|
|
Iterator ();
|
|
Iterator (const ChannelList::ChannelMap::iterator &i);
|
|
|
|
Iterator & operator ++ ();
|
|
Iterator operator ++ (int);
|
|
|
|
const char * name () const;
|
|
Channel & channel () const;
|
|
|
|
private:
|
|
|
|
friend class ChannelList::ConstIterator;
|
|
|
|
ChannelList::ChannelMap::iterator _i;
|
|
};
|
|
|
|
|
|
class ChannelList::ConstIterator
|
|
{
|
|
public:
|
|
|
|
ConstIterator ();
|
|
ConstIterator (const ChannelList::ChannelMap::const_iterator &i);
|
|
ConstIterator (const ChannelList::Iterator &other);
|
|
|
|
ConstIterator & operator ++ ();
|
|
ConstIterator operator ++ (int);
|
|
|
|
const char * name () const;
|
|
const Channel & channel () const;
|
|
|
|
private:
|
|
|
|
friend bool operator == (const ConstIterator &, const ConstIterator &);
|
|
friend bool operator != (const ConstIterator &, const ConstIterator &);
|
|
|
|
ChannelList::ChannelMap::const_iterator _i;
|
|
};
|
|
|
|
|
|
//-----------------
|
|
// Inline Functions
|
|
//-----------------
|
|
|
|
inline
|
|
ChannelList::Iterator::Iterator (): _i()
|
|
{
|
|
// empty
|
|
}
|
|
|
|
|
|
inline
|
|
ChannelList::Iterator::Iterator (const ChannelList::ChannelMap::iterator &i):
|
|
_i (i)
|
|
{
|
|
// empty
|
|
}
|
|
|
|
|
|
inline ChannelList::Iterator &
|
|
ChannelList::Iterator::operator ++ ()
|
|
{
|
|
++_i;
|
|
return *this;
|
|
}
|
|
|
|
|
|
inline ChannelList::Iterator
|
|
ChannelList::Iterator::operator ++ (int)
|
|
{
|
|
Iterator tmp = *this;
|
|
++_i;
|
|
return tmp;
|
|
}
|
|
|
|
|
|
inline const char *
|
|
ChannelList::Iterator::name () const
|
|
{
|
|
return *_i->first;
|
|
}
|
|
|
|
|
|
inline Channel &
|
|
ChannelList::Iterator::channel () const
|
|
{
|
|
return _i->second;
|
|
}
|
|
|
|
|
|
inline
|
|
ChannelList::ConstIterator::ConstIterator (): _i()
|
|
{
|
|
// empty
|
|
}
|
|
|
|
inline
|
|
ChannelList::ConstIterator::ConstIterator
|
|
(const ChannelList::ChannelMap::const_iterator &i): _i (i)
|
|
{
|
|
// empty
|
|
}
|
|
|
|
|
|
inline
|
|
ChannelList::ConstIterator::ConstIterator (const ChannelList::Iterator &other):
|
|
_i (other._i)
|
|
{
|
|
// empty
|
|
}
|
|
|
|
inline ChannelList::ConstIterator &
|
|
ChannelList::ConstIterator::operator ++ ()
|
|
{
|
|
++_i;
|
|
return *this;
|
|
}
|
|
|
|
|
|
inline ChannelList::ConstIterator
|
|
ChannelList::ConstIterator::operator ++ (int)
|
|
{
|
|
ConstIterator tmp = *this;
|
|
++_i;
|
|
return tmp;
|
|
}
|
|
|
|
|
|
inline const char *
|
|
ChannelList::ConstIterator::name () const
|
|
{
|
|
return *_i->first;
|
|
}
|
|
|
|
inline const Channel &
|
|
ChannelList::ConstIterator::channel () const
|
|
{
|
|
return _i->second;
|
|
}
|
|
|
|
|
|
inline bool
|
|
operator == (const ChannelList::ConstIterator &x,
|
|
const ChannelList::ConstIterator &y)
|
|
{
|
|
return x._i == y._i;
|
|
}
|
|
|
|
|
|
inline bool
|
|
operator != (const ChannelList::ConstIterator &x,
|
|
const ChannelList::ConstIterator &y)
|
|
{
|
|
return !(x == y);
|
|
}
|
|
|
|
|
|
} // namespace Imf
|
|
|
|
#endif
|