--- /dev/null
+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2004, 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_INPUT_FILE_H
+#define INCLUDED_IMF_INPUT_FILE_H
+
+//-----------------------------------------------------------------------------
+//
+// class InputFile -- a scanline-based interface that can be used
+// to read both scanline-based and tiled OpenEXR image files.
+//
+//-----------------------------------------------------------------------------
+
+#include <ImfHeader.h>
+#include <ImfFrameBuffer.h>
+#include <ImfTiledOutputFile.h>
+#include <string>
+#include <fstream>
+#include <ImfThreading.h>
+
+namespace Imf {
+
+class TiledInputFile;
+class ScanLineInputFile;
+
+
+class InputFile
+{
+ public:
+
+ //-----------------------------------------------------------
+ // A constructor that opens the file with the specified name.
+ // Destroying the InputFile object will close the file.
+ //
+ // numThreads determines the number of threads that will be
+ // used to read the file (see ImfThreading.h).
+ //-----------------------------------------------------------
+
+ InputFile (const char fileName[], int numThreads = globalThreadCount());
+
+
+ //-------------------------------------------------------------
+ // A constructor that attaches the new InputFile object to a
+ // file that has already been opened. Destroying the InputFile
+ // object will not close the file.
+ //
+ // numThreads determines the number of threads that will be
+ // used to read the file (see ImfThreading.h).
+ //-------------------------------------------------------------
+
+ InputFile (IStream &is, int numThreads = globalThreadCount());
+
+
+ //-----------
+ // Destructor
+ //-----------
+
+ virtual ~InputFile ();
+
+
+ //------------------------
+ // Access to the file name
+ //------------------------
+
+ const char * fileName () const;
+
+
+ //--------------------------
+ // Access to the file header
+ //--------------------------
+
+ const Header & header () const;
+
+
+ //----------------------------------
+ // Access to the file format version
+ //----------------------------------
+
+ int version () const;
+
+
+ //-----------------------------------------------------------
+ // Set the current frame buffer -- copies the FrameBuffer
+ // object into the InputFile object.
+ //
+ // The current frame buffer is the destination for the pixel
+ // data read from the file. The current frame buffer must be
+ // set at least once before readPixels() is called.
+ // The current frame buffer can be changed after each call
+ // to readPixels().
+ //-----------------------------------------------------------
+
+ void setFrameBuffer (const FrameBuffer &frameBuffer);
+
+
+ //-----------------------------------
+ // Access to the current frame buffer
+ //-----------------------------------
+
+ const FrameBuffer & frameBuffer () const;
+
+
+ //---------------------------------------------------------------
+ // Check if the file is complete:
+ //
+ // isComplete() returns true if all pixels in the data window are
+ // present in the input file, or false if any pixels are missing.
+ // (Another program may still be busy writing the file, or file
+ // writing may have been aborted prematurely.)
+ //---------------------------------------------------------------
+
+ bool isComplete () const;
+
+
+ //---------------------------------------------------------------
+ // Read pixel data:
+ //
+ // readPixels(s1,s2) reads all scan lines with y coordinates
+ // in the interval [min (s1, s2), max (s1, s2)] from the file,
+ // and stores them in the current frame buffer.
+ //
+ // Both s1 and s2 must be within the interval
+ // [header().dataWindow().min.y, header().dataWindow().max.y]
+ //
+ // The scan lines can be read from the file in random order, and
+ // individual scan lines may be skipped or read multiple times.
+ // For maximum efficiency, the scan lines should be read in the
+ // order in which they were written to the file.
+ //
+ // readPixels(s) calls readPixels(s,s).
+ //
+ //---------------------------------------------------------------
+
+ void readPixels (int scanLine1, int scanLine2);
+ void readPixels (int scanLine);
+
+
+ //----------------------------------------------
+ // Read a block of raw pixel data from the file,
+ // without uncompressing it (this function is
+ // used to implement OutputFile::copyPixels()).
+ //----------------------------------------------
+
+ void rawPixelData (int firstScanLine,
+ const char *&pixelData,
+ int &pixelDataSize);
+
+ //--------------------------------------------------
+ // Read a tile of raw pixel data from the file,
+ // without uncompressing it (this function is
+ // used to implement TiledOutputFile::copyPixels()).
+ //--------------------------------------------------
+
+ void rawTileData (int &dx, int &dy,
+ int &lx, int &ly,
+ const char *&pixelData,
+ int &pixelDataSize);
+
+ struct Data;
+
+ private:
+
+ InputFile (const InputFile &); // not implemented
+ InputFile & operator = (const InputFile &); // not implemented
+
+ void initialize ();
+ TiledInputFile * tFile ();
+
+ friend void TiledOutputFile::copyPixels (InputFile &);
+
+ Data * _data;
+};
+
+
+} // namespace Imf
+
+#endif
projects / opencv / blobdiff