///////////////////////////////////////////////////////////////////////////

//

// Copyright (c) 2004-2012, 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.

//

///////////////////////////////////////////////////////////////////////////

#include <ImfTiledOutputFile.h>

#include <ImfInputFile.h>

#include <ImfTiledInputFile.h>

#include <ImfChannelList.h>

#include <ImfArray.h>

#include <half.h>

#include <vector>

#include <stdio.h>

#include <assert.h>

using namespace OPENEXR_IMF_NAMESPACE;

using namespace std;

using namespace IMATH_NAMESPACE;

namespace {

void

fillPixels (Array2D<half> &ph, int width, int height)

{

    for (int y = 0; y < height; ++y)

	for (int x = 0; x < width; ++x)

	    ph[y][x] = sin (double (x)) + sin (y * 0.5);

}

void

writeCopyReadONE (const char fileName1[],

		  const char fileName2[],

		  int width,

		  int height,

		  int xSize, 

		  int ySize,

		  int xOffset,

		  int yOffset,

		  Compression comp,

		  LevelRoundingMode rmode)

{

    cout << "levelMode 0, " << "compression " << comp <<

	    ", roundingMode " << rmode <<

            ", xOffset " << xOffset << ", yOffset " << yOffset << endl;

    Header hdr ((Box2i (V2i (0, 0),			// display window

		        V2i (width - 1, height -1))),

		(Box2i (V2i (xOffset, yOffset),		// data window

		        V2i (xOffset + width - 1, yOffset + height - 1))));

    hdr.compression() = comp;

    hdr.lineOrder() = INCREASING_Y;

    hdr.channels().insert ("H", Channel (HALF, 1, 1));

    hdr.setTileDescription(TileDescription(xSize, ySize, ONE_LEVEL, rmode));

    Array2D<half> ph1 (height, width);

    fillPixels (ph1, width, height);

    {

        FrameBuffer fb; 

        fb.insert ("H",

                   Slice (HALF,

                          (char *) &ph1[-yOffset][-xOffset],

                          sizeof (ph1[0][0]),

                          sizeof (ph1[0][0]) * width));

        cout << " writing" << flush;

        remove (fileName1);

        TiledOutputFile out (fileName1, hdr);

        out.setFrameBuffer (fb);

        out.writeTiles (0, out.numXTiles() - 1, 0, out.numYTiles() - 1);

    }

    {

        cout << " copying" << flush;

        remove (fileName2);

        InputFile in (fileName1);

        TiledOutputFile out (fileName2, in.header());

        out.copyPixels (in);

    }

    {

        cout << " reading" << flush;

        TiledInputFile in1 (fileName1);

        TiledInputFile in2 (fileName2);

        const Box2i &dw = in2.header().dataWindow();

        int w = dw.max.x - dw.min.x + 1;

        int h = dw.max.y - dw.min.y + 1;

        int dx = dw.min.x;

        int dy = dw.min.y;

        Array2D<half> ph1 (h, w);

        Array2D<half> ph2 (h, w);

        FrameBuffer fb1;

        FrameBuffer fb2;

        fb1.insert ("H",

                    Slice (HALF,

                           (char *) &ph1[-dy][-dx],

                           sizeof (ph1[0][0]),

                           sizeof (ph1[0][0]) * w));

        fb2.insert ("H",

                    Slice (HALF,

                           (char *) &ph2[-dy][-dx],

                           sizeof (ph2[0][0]),

                           sizeof (ph2[0][0]) * w));

        in1.setFrameBuffer (fb1);

        in1.readTiles (0, in1.numXTiles() - 1, 0, in1.numYTiles() - 1);

        in2.setFrameBuffer (fb2);

        in2.readTiles (0, in2.numXTiles() - 1, 0, in2.numYTiles() - 1);

        cout << " comparing" << flush;

        assert (in2.header().displayWindow() == hdr.displayWindow());

        assert (in2.header().dataWindow() == hdr.dataWindow());

        assert (in2.header().pixelAspectRatio() == hdr.pixelAspectRatio());

        assert (in2.header().screenWindowCenter() == hdr.screenWindowCenter());

        assert (in2.header().screenWindowWidth() == hdr.screenWindowWidth());

        assert (in2.header().lineOrder() == hdr.lineOrder());

        assert (in2.header().compression() == hdr.compression());

        assert (in2.header().channels() == hdr.channels());

        for (int y = 0; y < h; ++y)

            for (int x = 0; x < w; ++x)

		assert (ph1[y][x] == ph2[y][x]);

    }

    remove (fileName1);

    remove (fileName2);

    cout << endl;

}

void

writeCopyReadMIP (const char fileName1[],

		  const char fileName2[],

		  int width,

		  int height,

		  int xSize, 

		  int ySize,

		  int xOffset,

		  int yOffset,

		  Compression comp,

		  LevelRoundingMode rmode)

{

    cout << "levelMode 1, " << "compression " << comp <<

	    ", roundingMode " << rmode <<

            ", xOffset " << xOffset << ", yOffset " << yOffset << endl;

    Header hdr ((Box2i (V2i (0, 0),			// display window

                        V2i (width - 1, height -1))),

                (Box2i (V2i (xOffset, yOffset),		// data window

                        V2i (xOffset + width - 1, yOffset + height - 1))));

    hdr.compression() = comp;

    hdr.lineOrder() = INCREASING_Y;

    hdr.channels().insert ("H", Channel (HALF, 1, 1));

    hdr.setTileDescription(TileDescription(xSize, ySize, MIPMAP_LEVELS, rmode));

    Array < Array2D<half> > levels;

    {

        cout << " writing" << flush;

        remove (fileName1);

        TiledOutputFile out (fileName1, hdr);

        int numLevels = out.numLevels();

	levels.resizeErase (numLevels);

        for (int level = 0; level < out.numLevels(); ++level)

        {

            int levelWidth  = out.levelWidth(level);

            int levelHeight = out.levelHeight(level);

            levels[level].resizeErase(levelHeight, levelWidth);

            fillPixels (levels[level], levelWidth, levelHeight);

            FrameBuffer fb; 

            fb.insert ("H",

                       Slice (HALF,

                              (char *) &levels[level][-yOffset][-xOffset],

                              sizeof (levels[level][0][0]),

                              sizeof (levels[level][0][0]) * levelWidth));

            out.setFrameBuffer (fb);

            out.writeTiles (0, out.numXTiles(level) - 1,

                            0, out.numYTiles(level) - 1, level);

        }        

    }

    {

        cout << " copying" << flush;

        remove (fileName2);

        InputFile in (fileName1);

        TiledOutputFile out (fileName2, in.header());

        out.copyPixels (in);

    }

    {

        cout << " reading" << flush;

        TiledInputFile in1 (fileName1);

        TiledInputFile in2 (fileName2);

        const Box2i &dw = in2.header().dataWindow();

        int dx = dw.min.x;

        int dy = dw.min.y;

        int numLevels = in2.numLevels();

        Array < Array2D<half> > levels1 (numLevels);

        Array < Array2D<half> > levels2 (numLevels);

        for (int level = 0; level < numLevels; ++level)

        {

            int levelWidth = in2.levelWidth(level);

            int levelHeight = in2.levelHeight(level);

            levels1[level].resizeErase(levelHeight, levelWidth);

            levels2[level].resizeErase(levelHeight, levelWidth);

            FrameBuffer fb1; 

            FrameBuffer fb2; 

            fb1.insert ("H",

                        Slice (HALF,

                               (char *) &levels1[level][-dy][-dx],

                               sizeof (levels1[level][0][0]),

                               sizeof (levels1[level][0][0]) * levelWidth));

            fb2.insert ("H",

                        Slice (HALF,

                               (char *) &levels2[level][-dy][-dx],

                               sizeof (levels2[level][0][0]),

                               sizeof (levels2[level][0][0]) * levelWidth));

            in1.setFrameBuffer (fb1);

            in2.setFrameBuffer (fb2);

            in1.readTiles (0, in1.numXTiles(level) - 1,

                           0, in1.numYTiles(level) - 1, level);

            in2.readTiles (0, in2.numXTiles(level) - 1,

                           0, in2.numYTiles(level) - 1, level);

        }

        cout << " comparing" << flush;

        assert (in2.header().displayWindow() == hdr.displayWindow());

        assert (in2.header().dataWindow() == hdr.dataWindow());

        assert (in2.header().pixelAspectRatio() == hdr.pixelAspectRatio());

        assert (in2.header().screenWindowCenter() == hdr.screenWindowCenter());

        assert (in2.header().screenWindowWidth() == hdr.screenWindowWidth());

        assert (in2.header().lineOrder() == hdr.lineOrder());

        assert (in2.header().compression() == hdr.compression());

        assert (in2.header().channels() == hdr.channels());

        for (int l = 0; l < numLevels; ++l)

            for (int y = 0; y < in1.levelHeight(l); ++y)

                for (int x = 0; x < in1.levelWidth(l); ++x)                    

		{

                    assert ((levels2[l])[y][x] == (levels1[l])[y][x]);

		    if (comp != B44_COMPRESSION && comp != B44A_COMPRESSION)

			assert ((levels2[l])[y][x] == (levels[l])[y][x]);

		}

    }

    remove (fileName1);

    remove (fileName2);

    cout << endl;

}

void

writeCopyReadRIP (const char fileName1[],

		  const char fileName2[],

		  int width,

		  int height,

		  int xSize, 

		  int ySize,

		  int xOffset,

		  int yOffset,

		  Compression comp,

		  LevelRoundingMode rmode)

{

    cout << "levelMode 2, " << "compression " << comp <<

	    ", roundingMode " << rmode <<

            ", xOffset " << xOffset << ", yOffset " << yOffset << endl;

    Header hdr ((Box2i (V2i (0, 0),			// display window

                        V2i (width - 1, height -1))),

                (Box2i (V2i (xOffset, yOffset),		// data window

                        V2i (xOffset + width - 1, yOffset + height - 1))));

    hdr.compression() = comp;

    hdr.lineOrder() = INCREASING_Y;

    hdr.channels().insert ("H", Channel (HALF, 1, 1));

    hdr.setTileDescription(TileDescription(xSize, ySize, RIPMAP_LEVELS, rmode));

    Array2D < Array2D<half> > levels;

    {

        cout << " writing" << flush;

        remove (fileName1);

        TiledOutputFile out (fileName1, hdr);

	levels.resizeErase (out.numYLevels(), out.numXLevels());

        for (int ylevel = 0; ylevel < out.numYLevels(); ++ylevel)

        {            

            for (int xlevel = 0; xlevel < out.numXLevels(); ++xlevel)

            {

                int levelWidth = out.levelWidth(xlevel);

                int levelHeight = out.levelHeight(ylevel);

                levels[ylevel][xlevel].resizeErase(levelHeight, levelWidth);          

                fillPixels (levels[ylevel][xlevel], levelWidth, levelHeight);

                FrameBuffer fb;

                fb.insert ("H",

		   Slice (HALF,

			  (char *) &levels[ylevel][xlevel][-yOffset][-xOffset],

			  sizeof (levels[ylevel][xlevel][0][0]),

			  sizeof (levels[ylevel][xlevel][0][0]) * levelWidth));

                out.setFrameBuffer (fb);

                out.writeTiles (0, out.numXTiles(xlevel) - 1,

                                0, out.numYTiles(ylevel) - 1, xlevel, ylevel);

            }

        }        

    }

    {

        cout << " copying" << flush;

        remove (fileName2);

        InputFile in (fileName1);

        TiledOutputFile out (fileName2, in.header());

        out.copyPixels (in);

    }

    {

        cout << " reading" << flush;

        TiledInputFile in1 (fileName1);

        TiledInputFile in2 (fileName2);

        const Box2i &dw = in2.header().dataWindow();

        int dx = dw.min.x;

        int dy = dw.min.y;

        int numXLevels = in2.numXLevels();

        int numYLevels = in2.numYLevels();

        Array2D < Array2D<half> > levels1 (numYLevels, numXLevels);

        Array2D < Array2D<half> > levels2 (numYLevels, numXLevels);

        for (int ylevel = 0; ylevel < numYLevels; ++ylevel)

        {

            for (int xlevel = 0; xlevel < numXLevels; ++xlevel)

            {

                int levelWidth  = in2.levelWidth(xlevel);

                int levelHeight = in2.levelHeight(ylevel);

                levels1[ylevel][xlevel].resizeErase(levelHeight, levelWidth);

                levels2[ylevel][xlevel].resizeErase(levelHeight, levelWidth);

                FrameBuffer fb1;

                FrameBuffer fb2;

                fb1.insert ("H",

		   Slice (HALF,

			  (char *) &levels1[ylevel][xlevel][-dy][-dx],

			  sizeof (levels1[ylevel][xlevel][0][0]),

			  sizeof (levels1[ylevel][xlevel][0][0]) * levelWidth));

                fb2.insert ("H",

		   Slice (HALF,

			  (char *) &levels2[ylevel][xlevel][-dy][-dx],

			  sizeof (levels2[ylevel][xlevel][0][0]),

			  sizeof (levels2[ylevel][xlevel][0][0]) * levelWidth));

                in1.setFrameBuffer (fb1);

                in2.setFrameBuffer (fb2);

                in1.readTiles (0, in1.numXTiles(xlevel) - 1,

                               0, in1.numYTiles(ylevel) - 1,

                               xlevel, ylevel);

                in2.readTiles (0, in2.numXTiles(xlevel) - 1,

                               0, in2.numYTiles(ylevel) - 1,

                               xlevel, ylevel);

            }

        }

        cout << " comparing" << flush;

        assert (in2.header().displayWindow() == hdr.displayWindow());

        assert (in2.header().dataWindow() == hdr.dataWindow());

        assert (in2.header().pixelAspectRatio() == hdr.pixelAspectRatio());

        assert (in2.header().screenWindowCenter() == hdr.screenWindowCenter());

        assert (in2.header().screenWindowWidth() == hdr.screenWindowWidth());

        assert (in2.header().lineOrder() == hdr.lineOrder());

        assert (in2.header().compression() == hdr.compression());

        assert (in2.header().channels() == hdr.channels());

        for (int ly = 0; ly < numYLevels; ++ly)

            for (int lx = 0; lx < numXLevels; ++lx)

                for (int y = 0; y < in1.levelHeight(ly); ++y)

                    for (int x = 0; x < in1.levelWidth(lx); ++x)

		    {

                        assert ((levels2[ly][lx])[y][x] ==

                                (levels1[ly][lx])[y][x]);

			if (comp != B44_COMPRESSION && comp != B44A_COMPRESSION)

			    assert ((levels2[ly][lx])[y][x] ==

				    (levels[ly][lx])[y][x]);

		    }

    }

    remove (fileName1);

    remove (fileName2);

    cout << endl;

}

void

writeCopyRead (const std::string &tempDir, int w, int h, int xs, int ys, int dx, int dy)

{

    std::string filename1 = tempDir + "imf_test_copy1.exr";

    std::string filename2 = tempDir + "imf_test_copy2.exr";

    for (int comp = 0; comp < NUM_COMPRESSION_METHODS; ++comp)

    {

	for (int rmode = 0; rmode < NUM_ROUNDINGMODES; ++rmode)

	{

	    writeCopyReadONE (filename1.c_str(), filename2.c_str(), w, h, xs, ys, dx, dy,

			      Compression (comp), LevelRoundingMode (rmode));

	    writeCopyReadMIP (filename1.c_str(), filename2.c_str(), w, h, xs, ys, dx, dy,

			      Compression (comp), LevelRoundingMode (rmode));

	    writeCopyReadRIP (filename1.c_str(), filename2.c_str(), w, h, xs, ys, dx, dy,

			      Compression (comp), LevelRoundingMode (rmode));

	}

    }

}

} // namespace

void

testTiledCopyPixels (const std::string &tempDir)

{

    try

    {

        cout << "Testing fast pixel copying for tiled files" << endl;

        const int W = 171;

        const int H = 259;

        const int DX = 17;

        const int DY = 29;

        const int YS = 55;

        writeCopyRead (tempDir, W, H, DX, YS, 0,  0);

        writeCopyRead (tempDir, W, H, DX, YS, 0,  DY);

        writeCopyRead (tempDir, W, H, DX, YS, DX, 0);

        writeCopyRead (tempDir, W, H, DX, YS, DX, DY);

        cout << "ok\n" << endl;

    }

    catch (const std::exception &e)

    {

        cerr << "ERROR -- caught exception: " << e.what() << endl;

        assert (false);

    }

}