+++ /dev/null
-///////////////////////////////////////////////////////////////////////////
-//
-// 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_IO_H
-#define INCLUDED_IMF_IO_H
-
-//-----------------------------------------------------------------------------
-//
-// Low-level file input and output for OpenEXR.
-//
-//-----------------------------------------------------------------------------
-
-#include <ImfInt64.h>
-#include <string>
-
-namespace Imf {
-
-//-----------------------------------------------------------
-// class IStream -- an abstract base class for input streams.
-//-----------------------------------------------------------
-
-class IStream
-{
- public:
-
- //-----------
- // Destructor
- //-----------
-
- virtual ~IStream ();
-
-
- //-------------------------------------------------
- // Does this input stream support memory-mapped IO?
- //
- // Memory-mapped streams can avoid an extra copy;
- // memory-mapped read operations return a pointer
- // to an internal buffer instead of copying data
- // into a buffer supplied by the caller.
- //-------------------------------------------------
-
- virtual bool isMemoryMapped () const;
-
-
- //------------------------------------------------------
- // Read from the stream:
- //
- // read(c,n) reads n bytes from the stream, and stores
- // them in array c. If the stream contains less than n
- // bytes, or if an I/O error occurs, read(c,n) throws
- // an exception. If read(c,n) reads the last byte from
- // the file it returns false, otherwise it returns true.
- //------------------------------------------------------
-
- virtual bool read (char c[/*n*/], int n) = 0;
-
-
- //---------------------------------------------------
- // Read from a memory-mapped stream:
- //
- // readMemoryMapped(n) reads n bytes from the stream
- // and returns a pointer to the first byte. The
- // returned pointer remains valid until the stream
- // is closed. If there are less than n byte left to
- // read in the stream or if the stream is not memory-
- // mapped, readMemoryMapped(n) throws an exception.
- //---------------------------------------------------
-
- virtual char * readMemoryMapped (int n);
-
-
- //--------------------------------------------------------
- // Get the current reading position, in bytes from the
- // beginning of the file. If the next call to read() will
- // read the first byte in the file, tellg() returns 0.
- //--------------------------------------------------------
-
- virtual Int64 tellg () = 0;
-
-
- //-------------------------------------------
- // Set the current reading position.
- // After calling seekg(i), tellg() returns i.
- //-------------------------------------------
-
- virtual void seekg (Int64 pos) = 0;
-
-
- //------------------------------------------------------
- // Clear error conditions after an operation has failed.
- //------------------------------------------------------
-
- virtual void clear ();
-
-
- //------------------------------------------------------
- // Get the name of the file associated with this stream.
- //------------------------------------------------------
-
- const char * fileName () const;
-
- protected:
-
- IStream (const char fileName[]);
-
- private:
-
- IStream (const IStream &); // not implemented
- IStream & operator = (const IStream &); // not implemented
-
- std::string _fileName;
-};
-
-
-//-----------------------------------------------------------
-// class OStream -- an abstract base class for output streams
-//-----------------------------------------------------------
-
-class OStream
-{
- public:
-
- //-----------
- // Destructor
- //-----------
-
- virtual ~OStream ();
-
-
- //----------------------------------------------------------
- // Write to the stream:
- //
- // write(c,n) takes n bytes from array c, and stores them
- // in the stream. If an I/O error occurs, write(c,n) throws
- // an exception.
- //----------------------------------------------------------
-
- virtual void write (const char c[/*n*/], int n) = 0;
-
-
- //---------------------------------------------------------
- // Get the current writing position, in bytes from the
- // beginning of the file. If the next call to write() will
- // start writing at the beginning of the file, tellp()
- // returns 0.
- //---------------------------------------------------------
-
- virtual Int64 tellp () = 0;
-
-
- //-------------------------------------------
- // Set the current writing position.
- // After calling seekp(i), tellp() returns i.
- //-------------------------------------------
-
- virtual void seekp (Int64 pos) = 0;
-
-
- //------------------------------------------------------
- // Get the name of the file associated with this stream.
- //------------------------------------------------------
-
- const char * fileName () const;
-
- protected:
-
- OStream (const char fileName[]);
-
- private:
-
- OStream (const OStream &); // not implemented
- OStream & operator = (const OStream &); // not implemented
-
- std::string _fileName;
-};
-
-
-//-----------------------
-// Helper classes for Xdr
-//-----------------------
-
-struct StreamIO
-{
- static void
- writeChars (OStream &os, const char c[/*n*/], int n)
- {
- os.write (c, n);
- }
-
- static bool
- readChars (IStream &is, char c[/*n*/], int n)
- {
- return is.read (c, n);
- }
-};
-
-
-struct CharPtrIO
-{
- static void
- writeChars (char *&op, const char c[/*n*/], int n)
- {
- while (n--)
- *op++ = *c++;
- }
-
- static bool
- readChars (const char *&ip, char c[/*n*/], int n)
- {
- while (n--)
- *c++ = *ip++;
-
- return true;
- }
-};
-
-
-} // namespace Imf
-
-#endif
projects / opencv / blobdiff