mirror of
https://github.com/opencv/opencv.git
synced 2024-12-03 16:35:09 +08:00
242 lines
8.7 KiB
C++
242 lines
8.7 KiB
C++
///////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// 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_OUTPUT_FILE_H
|
|
#define INCLUDED_IMF_OUTPUT_FILE_H
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// class OutputFile
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include <ImfHeader.h>
|
|
#include <ImfFrameBuffer.h>
|
|
#include <ImfThreading.h>
|
|
|
|
namespace Imf {
|
|
|
|
class InputFile;
|
|
struct PreviewRgba;
|
|
|
|
|
|
class OutputFile
|
|
{
|
|
public:
|
|
|
|
//-----------------------------------------------------------
|
|
// Constructor -- opens the file and writes the file header.
|
|
// The file header is also copied into the OutputFile object,
|
|
// and can later be accessed via the header() method.
|
|
// Destroying this OutputFile object automatically closes
|
|
// the file.
|
|
//
|
|
// numThreads determines the number of threads that will be
|
|
// used to write the file (see ImfThreading.h).
|
|
//-----------------------------------------------------------
|
|
|
|
OutputFile (const char fileName[], const Header &header,
|
|
int numThreads = globalThreadCount());
|
|
|
|
|
|
//------------------------------------------------------------
|
|
// Constructor -- attaches the new OutputFile object to a file
|
|
// that has already been opened, and writes the file header.
|
|
// The file header is also copied into the OutputFile object,
|
|
// and can later be accessed via the header() method.
|
|
// Destroying this OutputFile object does not automatically
|
|
// close the file.
|
|
//
|
|
// numThreads determines the number of threads that will be
|
|
// used to write the file (see ImfThreading.h).
|
|
//------------------------------------------------------------
|
|
|
|
OutputFile (OStream &os, const Header &header,
|
|
int numThreads = globalThreadCount());
|
|
|
|
|
|
//-------------------------------------------------
|
|
// Destructor
|
|
//
|
|
// Destroying the OutputFile object before writing
|
|
// all scan lines within the data window results in
|
|
// an incomplete file.
|
|
//-------------------------------------------------
|
|
|
|
virtual ~OutputFile ();
|
|
|
|
|
|
//------------------------
|
|
// Access to the file name
|
|
//------------------------
|
|
|
|
const char * fileName () const;
|
|
|
|
|
|
//--------------------------
|
|
// Access to the file header
|
|
//--------------------------
|
|
|
|
const Header & header () const;
|
|
|
|
|
|
//-------------------------------------------------------
|
|
// Set the current frame buffer -- copies the FrameBuffer
|
|
// object into the OutputFile object.
|
|
//
|
|
// The current frame buffer is the source of the pixel
|
|
// data written to the file. The current frame buffer
|
|
// must be set at least once before writePixels() is
|
|
// called. The current frame buffer can be changed
|
|
// after each call to writePixels.
|
|
//-------------------------------------------------------
|
|
|
|
void setFrameBuffer (const FrameBuffer &frameBuffer);
|
|
|
|
|
|
//-----------------------------------
|
|
// Access to the current frame buffer
|
|
//-----------------------------------
|
|
|
|
const FrameBuffer & frameBuffer () const;
|
|
|
|
|
|
//-------------------------------------------------------------------
|
|
// Write pixel data:
|
|
//
|
|
// writePixels(n) retrieves the next n scan lines worth of data from
|
|
// the current frame buffer, starting with the scan line indicated by
|
|
// currentScanLine(), and stores the data in the output file, and
|
|
// progressing in the direction indicated by header.lineOrder().
|
|
//
|
|
// To produce a complete and correct file, exactly m scan lines must
|
|
// be written, where m is equal to
|
|
// header().dataWindow().max.y - header().dataWindow().min.y + 1.
|
|
//-------------------------------------------------------------------
|
|
|
|
void writePixels (int numScanLines = 1);
|
|
|
|
|
|
//------------------------------------------------------------------
|
|
// Access to the current scan line:
|
|
//
|
|
// currentScanLine() returns the y coordinate of the first scan line
|
|
// that will be read from the current frame buffer during the next
|
|
// call to writePixels().
|
|
//
|
|
// If header.lineOrder() == INCREASING_Y:
|
|
//
|
|
// The current scan line before the first call to writePixels()
|
|
// is header().dataWindow().min.y. After writing each scan line,
|
|
// the current scan line is incremented by 1.
|
|
//
|
|
// If header.lineOrder() == DECREASING_Y:
|
|
//
|
|
// The current scan line before the first call to writePixels()
|
|
// is header().dataWindow().max.y. After writing each scan line,
|
|
// the current scan line is decremented by 1.
|
|
//
|
|
//------------------------------------------------------------------
|
|
|
|
int currentScanLine () const;
|
|
|
|
|
|
//--------------------------------------------------------------
|
|
// Shortcut to copy all pixels from an InputFile into this file,
|
|
// without uncompressing and then recompressing the pixel data.
|
|
// This file's header must be compatible with the InputFile's
|
|
// header: The two header's "dataWindow", "compression",
|
|
// "lineOrder" and "channels" attributes must be the same.
|
|
//--------------------------------------------------------------
|
|
|
|
void copyPixels (InputFile &in);
|
|
|
|
|
|
//--------------------------------------------------------------
|
|
// Updating the preview image:
|
|
//
|
|
// updatePreviewImage() supplies a new set of pixels for the
|
|
// preview image attribute in the file's header. If the header
|
|
// does not contain a preview image, updatePreviewImage() throws
|
|
// an Iex::LogicExc.
|
|
//
|
|
// Note: updatePreviewImage() is necessary because images are
|
|
// often stored in a file incrementally, a few scan lines at a
|
|
// time, while the image is being generated. Since the preview
|
|
// image is an attribute in the file's header, it gets stored in
|
|
// the file as soon as the file is opened, but we may not know
|
|
// what the preview image should look like until we have written
|
|
// the last scan line of the main image.
|
|
//
|
|
//--------------------------------------------------------------
|
|
|
|
void updatePreviewImage (const PreviewRgba newPixels[]);
|
|
|
|
|
|
//---------------------------------------------------------
|
|
// Break a scan line -- for testing and debugging only:
|
|
//
|
|
// breakScanLine(y,p,n,c) introduces an error into the
|
|
// output file by writing n copies of character c, starting
|
|
// p bytes from the beginning of the pixel data block that
|
|
// contains scan line y.
|
|
//
|
|
// Warning: Calling this function usually results in a
|
|
// broken image file. The file or parts of it may not
|
|
// be readable, or the file may contain bad data.
|
|
//
|
|
//---------------------------------------------------------
|
|
|
|
void breakScanLine (int y, int offset, int length, char c);
|
|
|
|
|
|
struct Data;
|
|
|
|
private:
|
|
|
|
OutputFile (const OutputFile &); // not implemented
|
|
OutputFile & operator = (const OutputFile &); // not implemented
|
|
|
|
void initialize (const Header &header);
|
|
|
|
Data * _data;
|
|
};
|
|
|
|
|
|
} // namespace Imf
|
|
|
|
#endif
|