mirror of
https://github.com/opencv/opencv.git
synced 2024-12-05 17:59:13 +08:00
649 lines
14 KiB
C++
649 lines
14 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.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// class InputFile
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include <ImfInputFile.h>
|
|
#include <ImfScanLineInputFile.h>
|
|
#include <ImfTiledInputFile.h>
|
|
#include <ImfChannelList.h>
|
|
#include <ImfMisc.h>
|
|
#include <ImfStdIO.h>
|
|
#include <ImfVersion.h>
|
|
#include "ImathFun.h"
|
|
#include "IlmThreadMutex.h"
|
|
#include "Iex.h"
|
|
#include "half.h"
|
|
#include <fstream>
|
|
#include <algorithm>
|
|
|
|
|
|
namespace Imf {
|
|
|
|
|
|
using Imath::Box2i;
|
|
using Imath::divp;
|
|
using Imath::modp;
|
|
using IlmThread::Mutex;
|
|
using IlmThread::Lock;
|
|
|
|
|
|
//
|
|
// Struct InputFile::Data stores things that will be
|
|
// needed between calls to readPixels
|
|
//
|
|
|
|
struct InputFile::Data: public Mutex
|
|
{
|
|
Header header;
|
|
int version;
|
|
IStream * is;
|
|
bool deleteStream;
|
|
|
|
TiledInputFile * tFile;
|
|
ScanLineInputFile * sFile;
|
|
|
|
LineOrder lineOrder; // the file's lineorder
|
|
int minY; // data window's min y coord
|
|
int maxY; // data window's max x coord
|
|
|
|
FrameBuffer tFileBuffer;
|
|
FrameBuffer * cachedBuffer;
|
|
|
|
int cachedTileY;
|
|
int offset;
|
|
|
|
int numThreads;
|
|
|
|
Data (bool del, int numThreads);
|
|
~Data ();
|
|
|
|
void deleteCachedBuffer();
|
|
};
|
|
|
|
|
|
InputFile::Data::Data (bool del, int numThreads):
|
|
is (0),
|
|
deleteStream (del),
|
|
tFile (0),
|
|
sFile (0),
|
|
cachedBuffer (0),
|
|
cachedTileY (-1),
|
|
numThreads (numThreads)
|
|
{
|
|
// empty
|
|
}
|
|
|
|
|
|
InputFile::Data::~Data ()
|
|
{
|
|
delete tFile;
|
|
delete sFile;
|
|
|
|
if (deleteStream)
|
|
delete is;
|
|
|
|
deleteCachedBuffer();
|
|
}
|
|
|
|
|
|
void
|
|
InputFile::Data::deleteCachedBuffer()
|
|
{
|
|
//
|
|
// Delete the cached frame buffer, and all memory
|
|
// allocated for the slices in the cached frameBuffer.
|
|
//
|
|
|
|
if (cachedBuffer)
|
|
{
|
|
for (FrameBuffer::Iterator k = cachedBuffer->begin();
|
|
k != cachedBuffer->end();
|
|
++k)
|
|
{
|
|
Slice &s = k.slice();
|
|
|
|
switch (s.type)
|
|
{
|
|
case UINT:
|
|
|
|
delete [] (((unsigned int *)s.base) + offset);
|
|
break;
|
|
|
|
case HALF:
|
|
|
|
delete [] ((half *)s.base + offset);
|
|
break;
|
|
|
|
case FLOAT:
|
|
|
|
delete [] (((float *)s.base) + offset);
|
|
break;
|
|
}
|
|
}
|
|
|
|
//
|
|
// delete the cached frame buffer
|
|
//
|
|
|
|
delete cachedBuffer;
|
|
cachedBuffer = 0;
|
|
}
|
|
}
|
|
|
|
|
|
namespace {
|
|
|
|
void
|
|
bufferedReadPixels (InputFile::Data* ifd, int scanLine1, int scanLine2)
|
|
{
|
|
//
|
|
// bufferedReadPixels reads each row of tiles that intersect the
|
|
// scan-line range (scanLine1 to scanLine2). The previous row of
|
|
// tiles is cached in order to prevent redundent tile reads when
|
|
// accessing scanlines sequentially.
|
|
//
|
|
|
|
int minY = std::min (scanLine1, scanLine2);
|
|
int maxY = std::max (scanLine1, scanLine2);
|
|
|
|
if (minY < ifd->minY || maxY > ifd->maxY)
|
|
{
|
|
throw Iex::ArgExc ("Tried to read scan line outside "
|
|
"the image file's data window.");
|
|
}
|
|
|
|
//
|
|
// The minimum and maximum y tile coordinates that intersect this
|
|
// scanline range
|
|
//
|
|
|
|
int minDy = (minY - ifd->minY) / ifd->tFile->tileYSize();
|
|
int maxDy = (maxY - ifd->minY) / ifd->tFile->tileYSize();
|
|
|
|
//
|
|
// Figure out which one is first in the file so we can read without seeking
|
|
//
|
|
|
|
int yStart, yEnd, yStep;
|
|
|
|
if (ifd->lineOrder == DECREASING_Y)
|
|
{
|
|
yStart = maxDy;
|
|
yEnd = minDy - 1;
|
|
yStep = -1;
|
|
}
|
|
else
|
|
{
|
|
yStart = minDy;
|
|
yEnd = maxDy + 1;
|
|
yStep = 1;
|
|
}
|
|
|
|
//
|
|
// the number of pixels in a row of tiles
|
|
//
|
|
|
|
Box2i levelRange = ifd->tFile->dataWindowForLevel(0);
|
|
|
|
//
|
|
// Read the tiles into our temporary framebuffer and copy them into
|
|
// the user's buffer
|
|
//
|
|
|
|
for (int j = yStart; j != yEnd; j += yStep)
|
|
{
|
|
Box2i tileRange = ifd->tFile->dataWindowForTile (0, j, 0);
|
|
|
|
int minYThisRow = std::max (minY, tileRange.min.y);
|
|
int maxYThisRow = std::min (maxY, tileRange.max.y);
|
|
|
|
if (j != ifd->cachedTileY)
|
|
{
|
|
//
|
|
// We don't have any valid buffered info, so we need to read in
|
|
// from the file.
|
|
//
|
|
|
|
ifd->tFile->readTiles (0, ifd->tFile->numXTiles (0) - 1, j, j);
|
|
ifd->cachedTileY = j;
|
|
}
|
|
|
|
//
|
|
// Copy the data from our cached framebuffer into the user's
|
|
// framebuffer.
|
|
//
|
|
|
|
for (FrameBuffer::ConstIterator k = ifd->cachedBuffer->begin();
|
|
k != ifd->cachedBuffer->end();
|
|
++k)
|
|
{
|
|
Slice fromSlice = k.slice(); // slice to write from
|
|
Slice toSlice = ifd->tFileBuffer[k.name()]; // slice to write to
|
|
|
|
char *fromPtr, *toPtr;
|
|
int size = pixelTypeSize (toSlice.type);
|
|
|
|
int xStart = levelRange.min.x;
|
|
int yStart = minYThisRow;
|
|
|
|
while (modp (xStart, toSlice.xSampling) != 0)
|
|
++xStart;
|
|
|
|
while (modp (yStart, toSlice.ySampling) != 0)
|
|
++yStart;
|
|
|
|
for (int y = yStart;
|
|
y <= maxYThisRow;
|
|
y += toSlice.ySampling)
|
|
{
|
|
//
|
|
// Set the pointers to the start of the y scanline in
|
|
// this row of tiles
|
|
//
|
|
|
|
fromPtr = fromSlice.base +
|
|
(y - tileRange.min.y) * fromSlice.yStride +
|
|
xStart * fromSlice.xStride;
|
|
|
|
toPtr = toSlice.base +
|
|
divp (y, toSlice.ySampling) * toSlice.yStride +
|
|
divp (xStart, toSlice.xSampling) * toSlice.xStride;
|
|
|
|
//
|
|
// Copy all pixels for the scanline in this row of tiles
|
|
//
|
|
|
|
for (int x = xStart;
|
|
x <= levelRange.max.x;
|
|
x += toSlice.xSampling)
|
|
{
|
|
for (size_t i = 0; i < size; ++i)
|
|
toPtr[i] = fromPtr[i];
|
|
|
|
fromPtr += fromSlice.xStride * toSlice.xSampling;
|
|
toPtr += toSlice.xStride;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace
|
|
|
|
|
|
|
|
InputFile::InputFile (const char fileName[], int numThreads):
|
|
_data (new Data (true, numThreads))
|
|
{
|
|
try
|
|
{
|
|
_data->is = new StdIFStream (fileName);
|
|
initialize();
|
|
}
|
|
catch (Iex::BaseExc &e)
|
|
{
|
|
delete _data;
|
|
|
|
REPLACE_EXC (e, "Cannot read image file "
|
|
"\"" << fileName << "\". " << e);
|
|
throw;
|
|
}
|
|
catch (...)
|
|
{
|
|
delete _data;
|
|
throw;
|
|
}
|
|
}
|
|
|
|
|
|
InputFile::InputFile (IStream &is, int numThreads):
|
|
_data (new Data (false, numThreads))
|
|
{
|
|
try
|
|
{
|
|
_data->is = &is;
|
|
initialize();
|
|
}
|
|
catch (Iex::BaseExc &e)
|
|
{
|
|
delete _data;
|
|
|
|
REPLACE_EXC (e, "Cannot read image file "
|
|
"\"" << is.fileName() << "\". " << e);
|
|
throw;
|
|
}
|
|
catch (...)
|
|
{
|
|
delete _data;
|
|
throw;
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
InputFile::initialize ()
|
|
{
|
|
_data->header.readFrom (*_data->is, _data->version);
|
|
_data->header.sanityCheck (isTiled (_data->version));
|
|
|
|
if (isTiled (_data->version))
|
|
{
|
|
_data->lineOrder = _data->header.lineOrder();
|
|
|
|
//
|
|
// Save the dataWindow information
|
|
//
|
|
|
|
const Box2i &dataWindow = _data->header.dataWindow();
|
|
_data->minY = dataWindow.min.y;
|
|
_data->maxY = dataWindow.max.y;
|
|
|
|
_data->tFile = new TiledInputFile (_data->header,
|
|
_data->is,
|
|
_data->version,
|
|
_data->numThreads);
|
|
}
|
|
else
|
|
{
|
|
_data->sFile = new ScanLineInputFile (_data->header,
|
|
_data->is,
|
|
_data->numThreads);
|
|
}
|
|
}
|
|
|
|
|
|
InputFile::~InputFile ()
|
|
{
|
|
delete _data;
|
|
}
|
|
|
|
|
|
const char *
|
|
InputFile::fileName () const
|
|
{
|
|
return _data->is->fileName();
|
|
}
|
|
|
|
|
|
const Header &
|
|
InputFile::header () const
|
|
{
|
|
return _data->header;
|
|
}
|
|
|
|
|
|
int
|
|
InputFile::version () const
|
|
{
|
|
return _data->version;
|
|
}
|
|
|
|
|
|
void
|
|
InputFile::setFrameBuffer (const FrameBuffer &frameBuffer)
|
|
{
|
|
if (isTiled (_data->version))
|
|
{
|
|
Lock lock (*_data);
|
|
|
|
//
|
|
// We must invalidate the cached buffer if the new frame
|
|
// buffer has a different set of channels than the old
|
|
// frame buffer, or if the type of a channel has changed.
|
|
//
|
|
|
|
const FrameBuffer &oldFrameBuffer = _data->tFileBuffer;
|
|
|
|
FrameBuffer::ConstIterator i = oldFrameBuffer.begin();
|
|
FrameBuffer::ConstIterator j = frameBuffer.begin();
|
|
|
|
while (i != oldFrameBuffer.end() && j != frameBuffer.end())
|
|
{
|
|
if (strcmp (i.name(), j.name()) || i.slice().type != j.slice().type)
|
|
break;
|
|
|
|
++i;
|
|
++j;
|
|
}
|
|
|
|
if (i != oldFrameBuffer.end() || j != frameBuffer.end())
|
|
{
|
|
//
|
|
// Invalidate the cached buffer.
|
|
//
|
|
|
|
_data->deleteCachedBuffer ();
|
|
_data->cachedTileY = -1;
|
|
|
|
//
|
|
// Create new a cached frame buffer. It can hold a single
|
|
// row of tiles. The cached buffer can be reused for each
|
|
// row of tiles because we set the yTileCoords parameter of
|
|
// each Slice to true.
|
|
//
|
|
|
|
const Box2i &dataWindow = _data->header.dataWindow();
|
|
_data->cachedBuffer = new FrameBuffer();
|
|
_data->offset = dataWindow.min.x;
|
|
|
|
int tileRowSize = (dataWindow.max.x - dataWindow.min.x + 1) *
|
|
_data->tFile->tileYSize();
|
|
|
|
for (FrameBuffer::ConstIterator k = frameBuffer.begin();
|
|
k != frameBuffer.end();
|
|
++k)
|
|
{
|
|
Slice s = k.slice();
|
|
|
|
switch (s.type)
|
|
{
|
|
case UINT:
|
|
|
|
_data->cachedBuffer->insert
|
|
(k.name(),
|
|
Slice (UINT,
|
|
(char *)(new unsigned int[tileRowSize] -
|
|
_data->offset),
|
|
sizeof (unsigned int),
|
|
sizeof (unsigned int) *
|
|
_data->tFile->levelWidth(0),
|
|
1, 1,
|
|
s.fillValue,
|
|
false, true));
|
|
break;
|
|
|
|
case HALF:
|
|
|
|
_data->cachedBuffer->insert
|
|
(k.name(),
|
|
Slice (HALF,
|
|
(char *)(new half[tileRowSize] -
|
|
_data->offset),
|
|
sizeof (half),
|
|
sizeof (half) *
|
|
_data->tFile->levelWidth(0),
|
|
1, 1,
|
|
s.fillValue,
|
|
false, true));
|
|
break;
|
|
|
|
case FLOAT:
|
|
|
|
_data->cachedBuffer->insert
|
|
(k.name(),
|
|
Slice (FLOAT,
|
|
(char *)(new float[tileRowSize] -
|
|
_data->offset),
|
|
sizeof(float),
|
|
sizeof(float) *
|
|
_data->tFile->levelWidth(0),
|
|
1, 1,
|
|
s.fillValue,
|
|
false, true));
|
|
break;
|
|
|
|
default:
|
|
|
|
throw Iex::ArgExc ("Unknown pixel data type.");
|
|
}
|
|
}
|
|
|
|
_data->tFile->setFrameBuffer (*_data->cachedBuffer);
|
|
}
|
|
|
|
_data->tFileBuffer = frameBuffer;
|
|
}
|
|
else
|
|
{
|
|
_data->sFile->setFrameBuffer (frameBuffer);
|
|
}
|
|
}
|
|
|
|
|
|
const FrameBuffer &
|
|
InputFile::frameBuffer () const
|
|
{
|
|
if (isTiled (_data->version))
|
|
{
|
|
Lock lock (*_data);
|
|
return _data->tFileBuffer;
|
|
}
|
|
else
|
|
{
|
|
return _data->sFile->frameBuffer();
|
|
}
|
|
}
|
|
|
|
|
|
bool
|
|
InputFile::isComplete () const
|
|
{
|
|
if (isTiled (_data->version))
|
|
return _data->tFile->isComplete();
|
|
else
|
|
return _data->sFile->isComplete();
|
|
}
|
|
|
|
|
|
void
|
|
InputFile::readPixels (int scanLine1, int scanLine2)
|
|
{
|
|
if (isTiled (_data->version))
|
|
{
|
|
Lock lock (*_data);
|
|
bufferedReadPixels (_data, scanLine1, scanLine2);
|
|
}
|
|
else
|
|
{
|
|
_data->sFile->readPixels (scanLine1, scanLine2);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
InputFile::readPixels (int scanLine)
|
|
{
|
|
readPixels (scanLine, scanLine);
|
|
}
|
|
|
|
|
|
void
|
|
InputFile::rawPixelData (int firstScanLine,
|
|
const char *&pixelData,
|
|
int &pixelDataSize)
|
|
{
|
|
try
|
|
{
|
|
if (isTiled (_data->version))
|
|
{
|
|
throw Iex::ArgExc ("Tried to read a raw scanline "
|
|
"from a tiled image.");
|
|
}
|
|
|
|
_data->sFile->rawPixelData (firstScanLine, pixelData, pixelDataSize);
|
|
}
|
|
catch (Iex::BaseExc &e)
|
|
{
|
|
REPLACE_EXC (e, "Error reading pixel data from image "
|
|
"file \"" << fileName() << "\". " << e);
|
|
throw;
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
InputFile::rawTileData (int &dx, int &dy,
|
|
int &lx, int &ly,
|
|
const char *&pixelData,
|
|
int &pixelDataSize)
|
|
{
|
|
try
|
|
{
|
|
if (!isTiled (_data->version))
|
|
{
|
|
throw Iex::ArgExc ("Tried to read a raw tile "
|
|
"from a scanline-based image.");
|
|
}
|
|
|
|
_data->tFile->rawTileData (dx, dy, lx, ly, pixelData, pixelDataSize);
|
|
}
|
|
catch (Iex::BaseExc &e)
|
|
{
|
|
REPLACE_EXC (e, "Error reading tile data from image "
|
|
"file \"" << fileName() << "\". " << e);
|
|
throw;
|
|
}
|
|
}
|
|
|
|
|
|
TiledInputFile*
|
|
InputFile::tFile()
|
|
{
|
|
if (!isTiled (_data->version))
|
|
{
|
|
throw Iex::ArgExc ("Cannot get a TiledInputFile pointer "
|
|
"from an InputFile that is not tiled.");
|
|
}
|
|
|
|
return _data->tFile;
|
|
}
|
|
|
|
|
|
} // namespace Imf
|