mirror of
https://github.com/opencv/opencv.git
synced 2024-12-25 01:28:15 +08:00
382 lines
13 KiB
C++
382 lines
13 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_TILED_INPUT_FILE_H
|
|
#define INCLUDED_IMF_TILED_INPUT_FILE_H
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// class TiledInputFile
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include <ImfHeader.h>
|
|
#include <ImfFrameBuffer.h>
|
|
#include "ImathBox.h"
|
|
#include <ImfTileDescription.h>
|
|
#include <ImfThreading.h>
|
|
|
|
namespace Imf {
|
|
|
|
|
|
class TiledInputFile
|
|
{
|
|
public:
|
|
|
|
//--------------------------------------------------------------------
|
|
// A constructor that opens the file with the specified name, and
|
|
// reads the file header. The constructor throws an Iex::ArgExc
|
|
// exception if the file is not tiled.
|
|
// The numThreads parameter specifies how many worker threads this
|
|
// file will try to keep busy when decompressing individual tiles.
|
|
// Destroying TiledInputFile objects constructed with this constructor
|
|
// automatically closes the corresponding files.
|
|
//--------------------------------------------------------------------
|
|
|
|
TiledInputFile (const char fileName[],
|
|
int numThreads = globalThreadCount ());
|
|
|
|
|
|
// ----------------------------------------------------------
|
|
// A constructor that attaches the new TiledInputFile object
|
|
// to a file that has already been opened.
|
|
// Destroying TiledInputFile objects constructed with this
|
|
// constructor does not automatically close the corresponding
|
|
// files.
|
|
// ----------------------------------------------------------
|
|
|
|
TiledInputFile (IStream &is, int numThreads = globalThreadCount ());
|
|
|
|
|
|
//-----------
|
|
// Destructor
|
|
//-----------
|
|
|
|
virtual ~TiledInputFile ();
|
|
|
|
|
|
//------------------------
|
|
// 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 TiledInputFile 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 readTile() is called.
|
|
// The current frame buffer can be changed after each call
|
|
// to readTile().
|
|
//-----------------------------------------------------------
|
|
|
|
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
|
|
// (in all levels) 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;
|
|
|
|
|
|
//--------------------------------------------------
|
|
// Utility functions:
|
|
//--------------------------------------------------
|
|
|
|
//---------------------------------------------------------
|
|
// Multiresolution mode and tile size:
|
|
// The following functions return the xSize, ySize and mode
|
|
// fields of the file header's TileDescriptionAttribute.
|
|
//---------------------------------------------------------
|
|
|
|
unsigned int tileXSize () const;
|
|
unsigned int tileYSize () const;
|
|
LevelMode levelMode () const;
|
|
LevelRoundingMode levelRoundingMode () const;
|
|
|
|
|
|
//--------------------------------------------------------------------
|
|
// Number of levels:
|
|
//
|
|
// numXLevels() returns the file's number of levels in x direction.
|
|
//
|
|
// if levelMode() == ONE_LEVEL:
|
|
// return value is: 1
|
|
//
|
|
// if levelMode() == MIPMAP_LEVELS:
|
|
// return value is: rfunc (log (max (w, h)) / log (2)) + 1
|
|
//
|
|
// if levelMode() == RIPMAP_LEVELS:
|
|
// return value is: rfunc (log (w) / log (2)) + 1
|
|
//
|
|
// where
|
|
// w is the width of the image's data window, max.x - min.x + 1,
|
|
// y is the height of the image's data window, max.y - min.y + 1,
|
|
// and rfunc(x) is either floor(x), or ceil(x), depending on
|
|
// whether levelRoundingMode() returns ROUND_DOWN or ROUND_UP.
|
|
//
|
|
// numYLevels() returns the file's number of levels in y direction.
|
|
//
|
|
// if levelMode() == ONE_LEVEL or levelMode() == MIPMAP_LEVELS:
|
|
// return value is the same as for numXLevels()
|
|
//
|
|
// if levelMode() == RIPMAP_LEVELS:
|
|
// return value is: rfunc (log (h) / log (2)) + 1
|
|
//
|
|
//
|
|
// numLevels() is a convenience function for use with
|
|
// MIPMAP_LEVELS files.
|
|
//
|
|
// if levelMode() == ONE_LEVEL or levelMode() == MIPMAP_LEVELS:
|
|
// return value is the same as for numXLevels()
|
|
//
|
|
// if levelMode() == RIPMAP_LEVELS:
|
|
// an Iex::LogicExc exception is thrown
|
|
//
|
|
// isValidLevel(lx, ly) returns true if the file contains
|
|
// a level with level number (lx, ly), false if not.
|
|
//
|
|
//--------------------------------------------------------------------
|
|
|
|
int numLevels () const;
|
|
int numXLevels () const;
|
|
int numYLevels () const;
|
|
bool isValidLevel (int lx, int ly) const;
|
|
|
|
|
|
//----------------------------------------------------------
|
|
// Dimensions of a level:
|
|
//
|
|
// levelWidth(lx) returns the width of a level with level
|
|
// number (lx, *), where * is any number.
|
|
//
|
|
// return value is:
|
|
// max (1, rfunc (w / pow (2, lx)))
|
|
//
|
|
//
|
|
// levelHeight(ly) returns the height of a level with level
|
|
// number (*, ly), where * is any number.
|
|
//
|
|
// return value is:
|
|
// max (1, rfunc (h / pow (2, ly)))
|
|
//
|
|
//----------------------------------------------------------
|
|
|
|
int levelWidth (int lx) const;
|
|
int levelHeight (int ly) const;
|
|
|
|
|
|
//--------------------------------------------------------------
|
|
// Number of tiles:
|
|
//
|
|
// numXTiles(lx) returns the number of tiles in x direction
|
|
// that cover a level with level number (lx, *), where * is
|
|
// any number.
|
|
//
|
|
// return value is:
|
|
// (levelWidth(lx) + tileXSize() - 1) / tileXSize()
|
|
//
|
|
//
|
|
// numYTiles(ly) returns the number of tiles in y direction
|
|
// that cover a level with level number (*, ly), where * is
|
|
// any number.
|
|
//
|
|
// return value is:
|
|
// (levelHeight(ly) + tileXSize() - 1) / tileXSize()
|
|
//
|
|
//--------------------------------------------------------------
|
|
|
|
int numXTiles (int lx = 0) const;
|
|
int numYTiles (int ly = 0) const;
|
|
|
|
|
|
//---------------------------------------------------------------
|
|
// Level pixel ranges:
|
|
//
|
|
// dataWindowForLevel(lx, ly) returns a 2-dimensional region of
|
|
// valid pixel coordinates for a level with level number (lx, ly)
|
|
//
|
|
// return value is a Box2i with min value:
|
|
// (dataWindow.min.x, dataWindow.min.y)
|
|
//
|
|
// and max value:
|
|
// (dataWindow.min.x + levelWidth(lx) - 1,
|
|
// dataWindow.min.y + levelHeight(ly) - 1)
|
|
//
|
|
// dataWindowForLevel(level) is a convenience function used
|
|
// for ONE_LEVEL and MIPMAP_LEVELS files. It returns
|
|
// dataWindowForLevel(level, level).
|
|
//
|
|
//---------------------------------------------------------------
|
|
|
|
Imath::Box2i dataWindowForLevel (int l = 0) const;
|
|
Imath::Box2i dataWindowForLevel (int lx, int ly) const;
|
|
|
|
|
|
//-------------------------------------------------------------------
|
|
// Tile pixel ranges:
|
|
//
|
|
// dataWindowForTile(dx, dy, lx, ly) returns a 2-dimensional
|
|
// region of valid pixel coordinates for a tile with tile coordinates
|
|
// (dx,dy) and level number (lx, ly).
|
|
//
|
|
// return value is a Box2i with min value:
|
|
// (dataWindow.min.x + dx * tileXSize(),
|
|
// dataWindow.min.y + dy * tileYSize())
|
|
//
|
|
// and max value:
|
|
// (dataWindow.min.x + (dx + 1) * tileXSize() - 1,
|
|
// dataWindow.min.y + (dy + 1) * tileYSize() - 1)
|
|
//
|
|
// dataWindowForTile(dx, dy, level) is a convenience function
|
|
// used for ONE_LEVEL and MIPMAP_LEVELS files. It returns
|
|
// dataWindowForTile(dx, dy, level, level).
|
|
//
|
|
//-------------------------------------------------------------------
|
|
|
|
Imath::Box2i dataWindowForTile (int dx, int dy, int l = 0) const;
|
|
|
|
Imath::Box2i dataWindowForTile (int dx, int dy,
|
|
int lx, int ly) const;
|
|
|
|
//------------------------------------------------------------
|
|
// Read pixel data:
|
|
//
|
|
// readTile(dx, dy, lx, ly) reads the tile with tile
|
|
// coordinates (dx, dy), and level number (lx, ly),
|
|
// and stores it in the current frame buffer.
|
|
//
|
|
// dx must lie in the interval [0, numXTiles(lx)-1]
|
|
// dy must lie in the interval [0, numYTiles(ly)-1]
|
|
//
|
|
// lx must lie in the interval [0, numXLevels()-1]
|
|
// ly must lie in the inverval [0, numYLevels()-1]
|
|
//
|
|
// readTile(dx, dy, level) is a convenience function used
|
|
// for ONE_LEVEL and MIPMAP_LEVELS files. It calls
|
|
// readTile(dx, dy, level, level).
|
|
//
|
|
// The two readTiles(dx1, dx2, dy1, dy2, ...) functions allow
|
|
// reading multiple tiles at once. If multi-threading is used
|
|
// the multiple tiles are read concurrently.
|
|
//
|
|
// Pixels that are outside the pixel coordinate range for the
|
|
// tile's level, are never accessed by readTile().
|
|
//
|
|
// Attempting to access a tile that is not present in the file
|
|
// throws an InputExc exception.
|
|
//
|
|
//------------------------------------------------------------
|
|
|
|
void readTile (int dx, int dy, int l = 0);
|
|
void readTile (int dx, int dy, int lx, int ly);
|
|
|
|
void readTiles (int dx1, int dx2, int dy1, int dy2,
|
|
int lx, int ly);
|
|
|
|
void readTiles (int dx1, int dx2, int dy1, int dy2,
|
|
int l = 0);
|
|
|
|
|
|
//--------------------------------------------------
|
|
// 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:
|
|
|
|
friend class InputFile;
|
|
|
|
TiledInputFile (const TiledInputFile &); // not implemented
|
|
TiledInputFile & operator = (const TiledInputFile &); // not implemented
|
|
|
|
TiledInputFile (const Header &header, IStream *is, int version,
|
|
int numThreads);
|
|
|
|
void initialize ();
|
|
|
|
bool isValidTile (int dx, int dy,
|
|
int lx, int ly) const;
|
|
|
|
size_t bytesPerLineForTile (int dx, int dy,
|
|
int lx, int ly) const;
|
|
|
|
Data * _data;
|
|
};
|
|
|
|
|
|
} // namespace Imf
|
|
|
|
#endif
|