///////////////////////////////////////////////////////////////////////////
//
// 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.
//
///////////////////////////////////////////////////////////////////////////


//-----------------------------------------------------------------------------
//
//	exrmaketiled -- program that produces tiled
//	multiresolution versions of OpenEXR images.
//
//-----------------------------------------------------------------------------

#include <makeTiled.h>

#include <iostream>
#include <exception>
#include <string>
#include <stdlib.h>

using namespace Imf;
using namespace std;

namespace {

void
usageMessage (const char argv0[], bool verbose = false)
{
    cerr << "usage: " << argv0 << " [options] infile outfile" << endl;

    if (verbose)
    {
	cerr << "\n"
		"Reads an OpenEXR image from infile, produces a tiled\n"
		"version of the image, and saves the result in outfile.\n"
		"\n"
		"Options:\n"
		"\n"
		"-o        produces a ONE_LEVEL image (default)\n"
		"\n"
		"-m        produces a MIPMAP_LEVELS multiresolution image\n"
		"\n"
		"-r        produces a RIPMAP_LEVELS multiresolution image\n"
		"\n"
		"-f c      when a MIPMAP_LEVELS or RIPMAP_LEVELS image\n"
		"          is produced, image channel c will be resampled\n"
		"          without low-pass filtering.  This option can\n"
		"          be specified multiple times to disable low-pass\n"
		"          filtering for mutiple channels.\n"
		"\n"
		"-e x y    when a MIPMAP_LEVELS or RIPMAP_LEVELS image\n"
		"          is produced, low-pass filtering takes samples\n"
		"          outside the image's data window.  This requires\n"
		"          extrapolating the image.  Option -e specifies\n"
		"          how the image is extrapolated horizontally and\n"
		"          vertically (black/clamp/periodic/mirror, default\n"
		"          is clamp).\n"
		"\n"
		"-t x y    sets the tile size in the output image to\n"
		"          x by y pixels (default is 64 by 64)\n"
		"\n"
		"-d        sets level size rounding to ROUND_DOWN (default)\n"
		"\n"
		"-u        sets level size rounding to ROUND_UP\n"
		"\n"
		"-z x      sets the data compression method to x\n"
		"          (none/rle/zip/piz/pxr24/b44/b44a, default is zip)\n"
		"\n"
		"-v        verbose mode\n"
		"\n"
		"-h        prints this message\n";

	 cerr << endl;
    }

    exit (1);
}


Compression
getCompression (const string &str)
{
    Compression c;

    if (str == "no" || str == "none" || str == "NO" || str == "NONE")
    {
	c = NO_COMPRESSION;
    }
    else if (str == "rle" || str == "RLE")
    {
	c = RLE_COMPRESSION;
    }
    else if (str == "zip" || str == "ZIP")
    {
	c = ZIP_COMPRESSION;
    }
    else if (str == "piz" || str == "PIZ")
    {
	c = PIZ_COMPRESSION;
    }
    else if (str == "pxr24" || str == "PXR24")
    {
	c = PXR24_COMPRESSION;
    }
    else if (str == "b44" || str == "B44")
    {
	c = B44_COMPRESSION;
    }
    else if (str == "b44a" || str == "B44A")
    {
	c = B44A_COMPRESSION;
    }
    else
    {
	cerr << "Unknown compression method \"" << str << "\"." << endl;
	exit (1);
    }

    return c;
}


Extrapolation
getExtrapolation (const string &str)
{
    Extrapolation e;

    if (str == "black" || str == "BLACK")
    {
	e = BLACK;
    }
    else if (str == "clamp" || str == "CLAMP")
    {
	e = CLAMP;
    }
    else if (str == "periodic" || str == "PERIODIC")
    {
	e = PERIODIC;
    }
    else if (str == "mirror" || str == "MIRROR")
    {
	e = MIRROR;
    }
    else
    {
	cerr << "Unknown extrapolation method \"" << str << "\"." << endl;
	exit (1);
    }

    return e;
}



} // namespace


int
main(int argc, char **argv)
{
    const char *inFile = 0;
    const char *outFile = 0;
    LevelMode mode = ONE_LEVEL;
    LevelRoundingMode roundingMode = ROUND_DOWN;
    Compression compression = ZIP_COMPRESSION;
    int tileSizeX = 64;
    int tileSizeY = 64;
    set<string> doNotFilter;
    Extrapolation extX = CLAMP;
    Extrapolation extY = CLAMP;
    bool verbose = false;

    //
    // Parse the command line.
    //

    if (argc < 2)
	usageMessage (argv[0], true);

    int i = 1;

    while (i < argc)
    {
	if (!strcmp (argv[i], "-o"))	
	{
	    //
	    // generate a ONE_LEVEL image
	    //

	    mode = ONE_LEVEL;
	    i += 1;
	}
	else if (!strcmp (argv[i], "-m"))
	{
	    //
	    // Generate a MIPMAP_LEVELS image
	    //

	    mode = MIPMAP_LEVELS;
	    i += 1;
	}
	else if (!strcmp (argv[i], "-r"))
	{
	    //
	    // Generate a RIPMAP_LEVELS image
	    //

	    mode = RIPMAP_LEVELS;
	    i += 1;
	}
	else if (!strcmp (argv[i], "-f"))
	{
	    //
	    // Don't low-pass filter the specified image channel
	    //

	    if (i > argc - 2)
		usageMessage (argv[0]);

	    doNotFilter.insert (argv[i + 1]);
	    i += 2;
	}
	else if (!strcmp (argv[i], "-e"))
	{
	    //
	    // Set x and y extrapolation method
	    //

	    if (i > argc - 3)
		usageMessage (argv[0]);

	    extX = getExtrapolation (argv[i + 1]);
	    extY = getExtrapolation (argv[i + 2]);
	    i += 3;
	}
	else if (!strcmp (argv[i], "-t"))
	{
	    //
	    // Set tile size
	    //

	    if (i > argc - 3)
		usageMessage (argv[0]);

	    tileSizeX = strtol (argv[i + 1], 0, 0);
	    tileSizeY = strtol (argv[i + 2], 0, 0);

	    if (tileSizeX <= 0 || tileSizeY <= 0)
	    {
		cerr << "Tile size must be greater than zero." << endl;
		return 1;
	    }

	    i += 3;
	}
	else if (!strcmp (argv[i], "-d"))
	{
	    //
	    // Round down
	    //

	    roundingMode = ROUND_DOWN;
	    i += 1;
	}
	else if (!strcmp (argv[i], "-u"))
	{
	    //
	    // Round down
	    //

	    roundingMode = ROUND_UP;
	    i += 1;
	}
	else if (!strcmp (argv[i], "-z"))
	{
	    //
	    // Set compression method
	    //

	    if (i > argc - 2)
		usageMessage (argv[0]);

	    compression = getCompression (argv[i + 1]);
	    i += 2;
	}
	else if (!strcmp (argv[i], "-v"))
	{
	    //
	    // Verbose mode
	    //

	    verbose = true;
	    i += 1;
	}
	else if (!strcmp (argv[i], "-h"))
	{
	    //
	    // Print help message
	    //

	    usageMessage (argv[0], true);
	}
	else
	{
	    //
	    // Image file name
	    //

	    if (inFile == 0)
		inFile = argv[i];
	    else
		outFile = argv[i];

	    i += 1;
	}
    }

    if (inFile == 0 || outFile == 0)
	usageMessage (argv[0]);

    //
    // Load inFile, and save a tiled version in outFile.
    //

    int exitStatus = 0;

    try
    {
	makeTiled (inFile, outFile,
		   mode, roundingMode, compression,
		   tileSizeX, tileSizeY,
		   doNotFilter,
		   extX, extY,
		   verbose);
    }
    catch (const exception &e)
    {
	cerr << e.what() << endl;
	exitStatus = 1;
    }

    return exitStatus;
}
