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JP2_Reader.cc
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JP2_Reader.cc
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/* JP2_Reader
HiROC CVS ID: $Id: JP2_Reader.cc,v 1.52 2012/03/12 22:22:54 castalia Exp $
Copyright (C) 2009-2010 Arizona Board of Regents on behalf of the
Planetary Image Research Laboratory, Lunar and Planetary Laboratory at
the University of Arizona.
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License, version 2.1,
as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*******************************************************************************/
#include "JP2_Reader.hh"
#if ! defined (THREAD_COUNT) || THREAD_COUNT < 0
#undef THREAD_COUNT
#define THREAD_COUNT processing_units ()
#else
#if THREAD_COUNT == 0
#warning
#warning >>> Multi-threaded rendering disabled.
#warning
#endif
#endif
#ifdef INCLUDE_KAKADU
// Kakadu Software
#include "kdu_arch.h"
using namespace kdu_core;
#endif
#include <string>
using std::string;
#include <sstream>
using std::ostringstream;
#include <iomanip>
using std::endl;
using std::setprecision;
#include <stdexcept>
using std::bad_alloc;
#if defined (DEBUG)
/* DEBUG controls
DEBUG report selection options.
Define any of the following options to obtain the desired debug reports:
*/
#define DEBUG_ALL -1
#define DEBUG_CONSTRUCTORS (1 << 0)
#define DEBUG_ACCESSORS (1 << 1)
#define DEBUG_MANIPULATORS (1 << 2)
#define DEBUG_UTILITIES (1 << 3)
#define DEBUG_OPEN (1 << 4)
#define DEBUG_RENDER (1 << 5)
#define DEBUG_DISPOSITION (1 << 6)
#define DEBUG_PIXEL_DATA (1 << 7)
#define DEBUG_ONE_LINE (1 << 8)
#define DEBUG_NOTIFY (1 << 9)
#define DEBUG_LOCATION (1 << 10)
#include <iostream>
using std::clog;
using std::setw;
using std::boolalpha;
using std::hex;
using std::dec;
using std::setfill;
#endif // DEBUG
namespace UA
{
namespace HiRISE
{
/*==============================================================================
Constants
*/
const char* const
JP2_Reader::ID =
"UA::HiRISE::JP2_Reader ($Revision: 1.52 $ $Date: 2012/03/12 22:22:54 $)";
const char* const
JP2_Reader::FORMAT_DESCRIPTIONS[] =
{
"Ad hoc (user specified)",
"BSQ (band sequential)",
"BIP (band interleaved by pixel)",
"BIL (band interleaved by line)"
};
const unsigned int
JP2_Reader::ALL_BANDS = ((unsigned int)-1);
#ifndef INCREMENTAL_BUFFER_BYTES
#define INCREMENTAL_BUFFER_BYTES (8 * 1024 * 1024)
#endif
const unsigned long long
JP2_Reader::DEFAULT_RENDERING_INCREMENT_BYTES = INCREMENTAL_BUFFER_BYTES;
#define BUFFER_SIZE_REDUCTION_DIFFERENTIAL (1024 * 1024)
#define MAX_ARRAY_ALLOCATION ((unsigned long long)((size_t)-1))
const std::string
JP2_Reader::Rendering_Monitor::Status_Message[] =
{
// INFO_ONLY
"Information only.",
// LOW_QUALITY_DATA
"Rendering low quality pixel data.",
// TOP_QUALITY_DATA
"Rendering top quality pixel data.",
// RENDERED_DATA_MASK
"Rendering pixel data.",
// CANCELED
"Data rendering was canceled.",
// unused
"Low quality rendering canceled.",
"Top quality rendering canceled.",
"Rendering canceled.",
// DONE
"Data rendering is done."
};
/*------------------------------------------------------------------------------
Defaults
*/
#ifndef DEFAULT_IMAGE_DATA_FORMAT
#define DEFAULT_IMAGE_DATA_FORMAT FORMAT_BIP
#endif
JP2_Reader::Image_Data_Format
JP2_Reader::Default_Image_Data_Format
= JP2_Reader::DEFAULT_IMAGE_DATA_FORMAT;
#define STRINGIFIED(name) #name
#define AS_STRING(name) STRINGIFIED(name)
#ifndef DEFAULT_JPIP_PROXY
#define _DEFAULT_JPIP_PROXY_ ""
#else
#define _DEFAULT_JPIP_PROXY_ AS_STRING(DEFAULT_JPIP_PROXY)
#endif
std::string
JP2_Reader::Default_JPIP_Proxy =
_DEFAULT_JPIP_PROXY_;
#ifndef DEFAULT_JPIP_CACHE_DIRECTORY
#define _DEFAULT_JPIP_CACHE_DIRECTORY_ ""
#else
#define _DEFAULT_JPIP_CACHE_DIRECTORY_ AS_STRING(DEFAULT_JPIP_CACHE_DIRECTORY)
#endif
std::string
JP2_Reader::Default_JPIP_Cache_Directory =
_DEFAULT_JPIP_CACHE_DIRECTORY_;
#ifndef DEFAULT_JPIP_REQUEST_TIMEOUT
#define DEFAULT_JPIP_REQUEST_TIMEOUT 30
#endif
unsigned int
JP2_Reader::Default_JPIP_Request_Timeout =
DEFAULT_JPIP_REQUEST_TIMEOUT;
#ifndef DEFAULT_AUTORECONNECT_RETRIES
#define DEFAULT_AUTORECONNECT_RETRIES 2
#endif
int
JP2_Reader::Default_Autoreconnect_Retries =
DEFAULT_AUTORECONNECT_RETRIES;
/*==============================================================================
Constructors
*/
JP2_Reader::JP2_Reader ()
: JP2_Metadata (),
Rendering_Configuration_Initialized (false),
Image_Data (NULL),
Buffer_Size (0),
User_Buffer (false),
Pixel_Stride (0),
Line_Stride (0),
Data_Format (Default_Image_Data_Format),
Rendered_Bands (),
Image_Region (),
Resolution_Level (0),
Rendered_Region (),
Swap_Pixel_Bytes (false),
Rendered_Bits (0),
Rendering_Increment_Lines (0),
Thread_Count (THREAD_COUNT),
JPIP_Request_Timeout (Default_JPIP_Request_Timeout),
JPIP_Proxy (Default_JPIP_Proxy),
JPIP_Cache_Directory (Default_JPIP_Cache_Directory),
Monitor (NULL),
Autoreconnect_Retries (Default_Autoreconnect_Retries),
Bytes_Rendered (0)
{
#if (DEBUG & DEBUG_CONSTRUCTORS)
clog << ">-< JP2_Reader @ " << (void*)this << endl;
#endif
}
JP2_Reader::JP2_Reader
(
const JP2_Reader& JP2_reader
)
: JP2_Metadata (JP2_reader),
Rendering_Configuration_Initialized (false),
Image_Data (NULL),
Buffer_Size (0),
User_Buffer (false),
Pixel_Stride (0),
Line_Stride (0),
Data_Format (JP2_reader.Data_Format),
Rendered_Bands (),
Image_Region (),
Resolution_Level (0),
Rendered_Region (),
Swap_Pixel_Bytes (JP2_reader.Swap_Pixel_Bytes),
Rendered_Bits (JP2_reader.Rendered_Bits),
Rendering_Increment_Lines (JP2_reader.Rendering_Increment_Lines),
Thread_Count (THREAD_COUNT),
JPIP_Request_Timeout (JP2_reader.JPIP_Request_Timeout),
JPIP_Proxy (JP2_reader.JPIP_Proxy),
JPIP_Cache_Directory (JP2_reader.JPIP_Cache_Directory),
Monitor (NULL),
Autoreconnect_Retries (JP2_reader.Autoreconnect_Retries),
Bytes_Rendered (0)
{
#if (DEBUG & DEBUG_CONSTRUCTORS)
clog << ">-< JP2_Reader @ " << (void*)this << endl
<< " Copy @ " << (void*)&JP2_reader << endl
<< " source_name = " << JP2_reader.source_name () << endl;
#endif
}
JP2_Reader::~JP2_Reader ()
{
#if (DEBUG & DEBUG_CONSTRUCTORS)
clog << ">>> ~JP2_Reader @ " << (void*)this << endl;
#endif
JP2_Reader::reset (); // Release any local resources.
#if (DEBUG & DEBUG_CONSTRUCTORS)
clog << "<<< ~JP2_Reader" << endl;
#endif
}
/*==============================================================================
Accessors
*/
JP2_Reader&
JP2_Reader::image_data
(
void** pixel_buffers,
unsigned long long buffer_size
)
{
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << ">>> JP2_Reader::image_data:" << endl
<< " pixel_buffers @ " << pixel_buffers << endl
<< " buffer_size - " << buffer_size << endl;
#endif
unsigned int
bands = image_bands ();
if (pixel_buffers)
{
if (! bands)
throw JP2_Logic_Error
("Can't assign image data pixel buffers"
" until the data source has been opened.", ID);
// Delete any local image data buffer.
delete_local_data_buffer ();
// Ensure that an image data buffers array is allocated.
allocate_data_buffers_array ();
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << " User Image_Data buffers -" << endl;
#endif
Rendered_Region.Depth = 0;
for (unsigned int
band = 0;
band < bands;
band++)
{
// Set Image_Data buffer pointer and Band_Map entries for the band.
if (Rendered_Bands[band] = (Image_Data[band] = pixel_buffers[band]))
Rendered_Region.Depth++; // Accumulate the rendered bands count.
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << " " << band << " @ " << Image_Data[band] << endl;
#endif
}
// Keep the Image_Region and Rendered_Region Depth in sync;
Image_Region.Depth = Rendered_Region.Depth;
User_Buffer = true;
Buffer_Size = buffer_size;
}
else
{
if (User_Buffer)
// A locally managed image data buffer will need to be allocated.
Buffer_Size = 0;
User_Buffer = false;
}
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << "<<< JP2_Reader::image_data" << endl;
#endif
return *this;
}
void*
JP2_Reader::image_data
(
unsigned int band,
unsigned int line,
unsigned int pixel
)
{
if (! Image_Data)
return NULL;
if (band >= Rendered_Region.Depth ||
line >= Rendered_Region.Height ||
pixel >= Rendered_Region.Width)
{
ostringstream
message;
message
<< "Invalid image data address request at band " << band
<< ", line " << line << " and pixel " << pixel << '.';
if (band >= Rendered_Region.Depth)
message
<< endl
<< "The band is beyond the " << (Rendered_Region.Depth - 1)
<< " limit.";
if (line >= Rendered_Region.Height)
message
<< endl
<< "The line is beyond the " << (Rendered_Region.Height - 1)
<< " limit.";
if (pixel >= Rendered_Region.Width)
message
<< endl
<< "The pixel is beyond the " << (Rendered_Region.Width - 1)
<< " limit.";
throw JP2_Invalid_Argument (message.str (), ID);
}
return
(unsigned char*)(Image_Data[band])
+ (((line * line_stride ()) + pixel_stride ())
* rendered_pixel_bytes ());
}
JP2_Reader::Image_Data_Format
JP2_Reader::default_image_data_format
(
Image_Data_Format data_format
)
{
if (! data_format ||
data_format >= TOTAL_FORMATS)
{
ostringstream
message;
message << "Unknown image data format (" << data_format << ").";
throw JP2_Invalid_Argument (message.str (), JP2_Reader::ID);
}
Image_Data_Format
previous = Default_Image_Data_Format;
Default_Image_Data_Format = data_format;
return previous;
}
JP2_Reader&
JP2_Reader::image_data_format
(
Image_Data_Format data_format
)
{
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << ">>> JP2_Reader::image_data_format: "
<< image_data_format_description (data_format) << endl;
#endif
if (! data_format ||
data_format >= TOTAL_FORMATS)
{
ostringstream
message;
message << "Unknown image data format (" << data_format << ").";
throw JP2_Invalid_Argument (message.str (), ID);
}
Data_Format = data_format;
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << "<<< JP2_Reader::image_data_format" << endl;
#endif
return *this;
}
std::string
JP2_Reader::image_data_format_description
(
Image_Data_Format data_format
)
const
{
if (data_format < TOTAL_FORMATS)
return FORMAT_DESCRIPTIONS[data_format];
ostringstream
description;
description << "Unknown (" << data_format << ')';
return description.str ();
}
JP2_Reader&
JP2_Reader::image_data_format
(
unsigned int pixel_stride,
unsigned int line_stride
)
{
Pixel_Stride = pixel_stride;
Line_Stride = line_stride;
if (pixel_stride ||
line_stride)
Data_Format = FORMAT_AD_HOC;
else
Data_Format = Default_Image_Data_Format;
return *this;
}
unsigned int
JP2_Reader::pixel_stride () const
{
if (Pixel_Stride)
return Pixel_Stride;
unsigned int
bands = rendered_bands ();
if (bands)
{
switch (Data_Format)
{
case FORMAT_BSQ: return 1;
case FORMAT_BIP: return bands;
case FORMAT_BIL: return 1;
default: break;
}
}
return 0;
}
unsigned int
JP2_Reader::line_stride () const
{
if (Line_Stride)
return Line_Stride;
unsigned int
bands = rendered_bands ();
if (bands)
{
switch (Data_Format)
{
case FORMAT_BSQ: return Rendered_Region.Width;
case FORMAT_BIP: return Rendered_Region.Width * bands;
case FORMAT_BIL: return Rendered_Region.Width * bands;
default: break;
}
}
return 0;
}
bool
JP2_Reader::render_band
(
unsigned int band,
bool enable
)
{
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << ">>> JP2_Reader::render_band: " << ((band == ALL_BANDS) ? -1 : band )
<< ' ' << boolalpha << enable << endl;
#endif
// Ensure that an image data buffers array is allocated.
allocate_data_buffers_array ();
bool
no_conflicts = true;
unsigned int
bands = image_bands ();
if (bands &&
band == ALL_BANDS)
{
Rendered_Region.Depth = 0;
for (unsigned int
band = 0;
band < bands;
band++)
{
if (enable)
{
if (user_buffer () &&
! Image_Data[band])
{
// Can't enable band with no user buffer.
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << " No user buffer for the band" << endl;
#endif
Rendered_Bands[band] = false;
no_conflicts = false;
}
else
{
Rendered_Bands[band] = enable;
++Rendered_Region.Depth;
}
}
else
Rendered_Bands[band] = enable;
}
// Keep the Image_Region and Rendered_Region Depth in sync;
Image_Region.Depth = Rendered_Region.Depth;
}
else
if (band < bands)
{
if (enable != Rendered_Bands[band])
{
if (enable)
{
if (! user_buffer () ||
Image_Data[band])
{
Rendered_Bands[band] = enable;
Image_Region.Depth = ++Rendered_Region.Depth;
}
else
{
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << " No user buffer for the band" << endl
<< "<<< JP2_Reader::render_band" << endl;
#endif
no_conflicts = false;
}
}
else
{
Rendered_Bands[band] = enable;
Image_Region.Depth = --Rendered_Region.Depth;
}
}
}
else
{
ostringstream
message;
message << "Can't " << (enable ? "en" : "dis") << "able image band "
<< band << " of " << bands
<< " for rendering." << endl;
throw JP2_Invalid_Argument (message.str (), ID);
}
#if ((DEBUG) & DEBUG_ACCESSORS)
clog << "<<< JP2_Reader::render_band: " << boolalpha << no_conflicts << endl;
#endif
return no_conflicts;
}
bool
JP2_Reader::is_rendered_band
(
unsigned int band
)
const
{
if (band < image_bands ())
return Rendered_Bands[band];
return false;
}
JP2_Reader&
JP2_Reader::rendered_pixel_bits
(
unsigned int bits
)
{
if (! bits)
throw JP2_Invalid_Argument
("Specifying zero rendered pixel bits is invalid.", ID);
if (bits > 16)
{
ostringstream
message;
message << "The maximum number of rendered pixel bits is 16, but "
<< bits << " was requested.";
throw JP2_Invalid_Argument (message.str (), ID);
}
Rendered_Bits = bits;
return *this;
}
unsigned int
JP2_Reader::rendered_pixel_bytes () const
{return bytes_of_bits (Rendered_Bits);}
unsigned long long
JP2_Reader::rendered_image_bytes () const
{return (unsigned long long)
Rendered_Region.area () * image_bands () * rendered_pixel_bytes ();}
unsigned int
JP2_Reader::effective_rendering_increment_lines () const
{
#if ((DEBUG) & DEBUG_RENDER)
clog << ">>> JP2_Reader::effective_rendering_increment_lines" << endl;
#endif
unsigned int
bands = image_bands (),
increment_lines = 0;
if (bands &&
Rendered_Region.Width)
{
increment_lines = Rendering_Increment_Lines;
#if ((DEBUG) & DEBUG_RENDER)
clog << " suggested increment: " << increment_lines << endl;
#endif
if (! increment_lines)
{
// Default incremental rendering.
unsigned int
increment_pixels =
DEFAULT_RENDERING_INCREMENT_BYTES
/ bands / rendered_pixel_bytes ();
increment_lines = increment_pixels / Rendered_Region.Width;
if (increment_pixels % Rendered_Region.Width)
++increment_lines;
#if ((DEBUG) & DEBUG_RENDER)
clog
<< " Using " << DEFAULT_RENDERING_INCREMENT_BYTES
<< " default increment bytes -" << endl
<< " bands: " << bands << endl
<< " region width: " << Rendered_Region.Width << endl
<< " rendered_pixel_bytes: " << rendered_pixel_bytes () << endl
<< " increment_pixels: " << increment_pixels << endl
<< " increment_lines: " << increment_lines << endl;
#endif
}
if (! increment_lines)
increment_lines = 1;
else
if (increment_lines > Rendered_Region.Height)
{
// Maximum effective rendering increment.
increment_lines = Rendered_Region.Height;
#if ((DEBUG) & DEBUG_RENDER)
clog << " region height: " << Rendered_Region.Height << endl;
#endif
}
}
#if ((DEBUG) & DEBUG_RENDER)
clog << "<<< JP2_Reader::effective_rendering_increment_lines: "
<< increment_lines << endl;
#endif
return increment_lines;
}
JP2_Reader&
JP2_Reader::processing_threads
(
unsigned int threads
)
{
if (! (Thread_Count = threads))
Thread_Count = processing_units ();
return *this;
}
/*==============================================================================
Render
*/
bool
JP2_Reader::ready
(
string* report
)
const
{
bool
is_ready = true;
ostringstream
reason;
if (report)
reason
<< "Not ready to render the " << source_name () << " source" << endl
<< "because:";
if (! is_open ())
{
if (report)
reason << endl
<< "No source has been opened.";
is_ready = false;
}
else
{
unsigned long long
size = minimum_buffer_size (),
maximum;
if (user_buffer () &&
Buffer_Size &&
Buffer_Size < size)
{
// Undersized user specified pixel buffer.
if (report)
{
reason
<< endl
<< "A" << ((Buffer_Size == 8 || Buffer_Size == 18) ? "n " : " ")
<< magnitude (Buffer_Size);
if (Buffer_Size >= 1024)
reason << " (" << Buffer_Size << ')';
reason
<< " byte image data buffer size is specified," << endl
<< "but a " << magnitude (size)
<< " (" << size << ") byte size is required to render the "
<< Rendered_Region.Width << " wide, "
<< Rendered_Region.Height << " high region" << endl
<< "with a pixel stride of " << pixel_stride ()
<< " and a line stride of " << line_stride () << '.';
}
is_ready = false;
}
else
if (! user_buffer () &&
(size *= rendered_bands ()) > (maximum = MAX_ARRAY_ALLOCATION))
{
// Can't allocate a buffer for the rendered image region.
if (report)
reason << endl
<< "The required " << magnitude (size) << " (" << size
<< ") byte image data buffer size" << endl
<< "for the "
<< Rendered_Region.Width << " wide, "
<< Rendered_Region.Height << " high, "
<< rendered_bands () << " band image region" << endl
<< "is greater than the maximum " << magnitude (maximum)
<< " (" << maximum << ") byte allocation.";
is_ready = false;
}
}
if (! is_ready &&
report)
*report += reason.str ();
return is_ready;
}
unsigned int
JP2_Reader::default_JPIP_request_timeout
(
unsigned int timeout
)
{
unsigned int
previous = Default_JPIP_Request_Timeout;
Default_JPIP_Request_Timeout = timeout;
return previous;
}
int
JP2_Reader::default_autoreconnect_retries
(
int retries
)
{
int
previous = Default_Autoreconnect_Retries;
Default_Autoreconnect_Retries = retries;
return previous;
}
bool
JP2_Reader::reconnect ()
{return is_open ();}
void
JP2_Reader::reset ()
{
#if ((DEBUG) & (DEBUG_OPEN | DEBUG_CONSTRUCTORS))
clog << ">>> JP2_Reader::reset" << endl;
#endif
// Reset rendering specifications.
Cube
empty;
Rendered_Bands.clear ();
Image_Region =
Rendered_Region = empty;
Resolution_Level = 0;
Swap_Pixel_Bytes = false;
Rendered_Bits = 0;
Rendering_Increment_Lines = 0;
Bytes_Rendered = 0;
Monitor = NULL;
// Delete locally managed image data buffers.
delete_local_data_buffer ();
if (Image_Data)
{
delete[] Image_Data;
Image_Data = NULL;
}
Buffer_Size = 0;
User_Buffer = false;
Pixel_Stride =
Line_Stride = 0;
Data_Format = Default_Image_Data_Format;
/* THREAD_COUNT
A preprocessor macro defined as processing_units() unless
defined as a non-negative value at compile time.
*/
Thread_Count = THREAD_COUNT;
JPIP_Proxy = Default_JPIP_Proxy;
JPIP_Cache_Directory = Default_JPIP_Cache_Directory;
// Reset the metadata.
JP2_Metadata::reset ();
Rendering_Configuration_Initialized = false;
#if ((DEBUG) & (DEBUG_OPEN | DEBUG_CONSTRUCTORS))
clog << "<<< JP2_Reader::reset" << endl;
#endif
}
/*==============================================================================
Helpers
*/
unsigned long long
JP2_Reader::minimum_buffer_size () const
{
return (unsigned long long)
rendered_pixel_bytes () *
pixel_stride () *
line_stride () *
Rendered_Region.height ();
}
bool
JP2_Reader::allocate_data_buffers_array ()
{
if (Image_Data)
return true;
/* Hidden local data buffer pointer.
An additional entry is provided for the pointer to a locally managed
image data buffer.
*/
unsigned int
bands = image_bands ();
if (bands)
{
Image_Data = new void*[bands + 1];
for (unsigned int
band = 0;
band <= bands;
band++)
Image_Data[band] = NULL;
return true;
}
return false;
}
void
JP2_Reader::delete_local_data_buffer ()
{
unsigned int
bands = image_bands ();
if (! Image_Data ||
! Image_Data[bands])
return;
#if ((DEBUG) & DEBUG_MANIPULATORS)
clog << ">-< JP2_Reader::delete_local_data_buffer:" << endl
<< " Deleting the local image data buffer @ "
<< Image_Data[bands] << endl;
#endif
delete[] reinterpret_cast<unsigned long long*>(Image_Data[bands]);
Buffer_Size = 0;
for (unsigned int
band = 0;
band <= bands;
band++)
Image_Data[band] = NULL;
}
void
JP2_Reader::allocate_image_data_buffer ()
{
#if ((DEBUG) & (DEBUG_MANIPULATORS | DEBUG_RENDER))
clog << ">>> JP2_Reader::allocate_image_data_buffer" << endl;
#endif
if (! user_buffer ())
{
unsigned long long
minimum = minimum_buffer_size () * rendered_bands ();
if (! minimum)
{
#if ((DEBUG) & (DEBUG_MANIPULATORS | DEBUG_RENDER))
clog << " Zero buffer size." << endl
<< "<<< JP2_Reader::allocate_image_data_buffer" << endl;
#endif
return;
}
// Convert to unsigned long long array size.
minimum = (minimum / sizeof (long long))
+ ((minimum % sizeof (long long) ? 1 : 0));
if (minimum > MAX_ARRAY_ALLOCATION)
{
ostringstream
message;
message << "The required image data buffer size - "
<< magnitude (minimum) << " (" << minimum << ") "
<< (sizeof (long long) << 3) << "-bit words" << endl
<< "is greater than the maximum size - "
<< magnitude (MAX_ARRAY_ALLOCATION)
<< " (" << MAX_ARRAY_ALLOCATION << ")." << endl;
throw JP2_Out_of_Range (message.str (), ID);
}
// Ensure that an image data buffers array is allocated.
allocate_data_buffers_array ();
unsigned int
bands = image_bands ();
size_t
size = (size_t)minimum,
buffer_size = size / rendered_bands ();
if (! Image_Data[bands] ||
buffer_size > Buffer_Size ||
(Buffer_Size > BUFFER_SIZE_REDUCTION_DIFFERENTIAL &&
buffer_size < (Buffer_Size - BUFFER_SIZE_REDUCTION_DIFFERENTIAL)))
{
// Reallocate the image data buffer.
delete_local_data_buffer ();
#if ((DEBUG) & (DEBUG_MANIPULATORS | DEBUG_RENDER))
clog << " Allocating " << size
<< " byte image data buffer" << endl;
#endif
try {Image_Data[bands] = new unsigned long long[size];}
catch (bad_alloc&)
{
minimum *= sizeof (long long);
ostringstream
message;
message << "Couldn't allocate a " << magnitude (minimum)
<< " (" << minimum << ") byte image data buffer.";
throw JP2_Out_of_Range (message.str (), ID);