Initial Mercurial commit.

src/modules/image/devil/ImageData.cpp

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+/**
+* Copyright (c) 2006-2009 LOVE Development Team
+* 
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* 
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 
+* 1. The origin of this software must not be misrepresented; you must not
+*    claim that you wrote the original software. If you use this software
+*    in a product, an acknowledgment in the product documentation would be
+*    appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+*    misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+**/
+
+#include "ImageData.h"
+
+// STD
+#include <iostream>
+
+namespace love
+{
+namespace image
+{
+namespace devil
+{
+	ImageData::ImageData(filesystem::File * file)
+	{
+		// Read the data.
+		Data * data = file->read();
+
+		// Generate DevIL image.
+		ilGenImages(1, &image);
+
+		// Bind the image.
+		ilBindImage(image);
+
+		// Try to load the image.
+		ILboolean success = ilLoadL(IL_TYPE_UNKNOWN, (void*)data->getData(), data->getSize());
+
+		// Free local image data.
+		data->release();
+
+		// Check for errors
+		if(!success)
+		{
+			std::cerr << "Could not decode image." << std::endl;
+			return;
+		}
+
+		width = ilGetInteger(IL_IMAGE_WIDTH);
+		height = ilGetInteger(IL_IMAGE_HEIGHT);
+		origin = ilGetInteger(IL_IMAGE_ORIGIN);
+
+		// Make sure the image is in RGBA format.
+		ilConvertImage(IL_RGBA, IL_UNSIGNED_BYTE);
+
+		// This should always be four.
+		bpp = ilGetInteger(IL_IMAGE_BPP);
+
+		if(bpp != 4)
+		{
+			std::cerr << "Bits per pixel != 4" << std::endl;
+			return;
+		}
+	}
+
+	ImageData::ImageData(int width, int height)
+		: width(width), height(height), origin(IL_ORIGIN_UPPER_LEFT), bpp(4)
+	{
+		// Generate DevIL image.
+		ilGenImages(1, &image);
+
+		// Bind the image.
+		ilBindImage(image);	
+
+		ilTexImage(width, height, 0, bpp, IL_RGBA, IL_UNSIGNED_BYTE, 0);
+	}
+
+	ImageData::~ImageData()
+	{
+		ilDeleteImages(1, &image);
+	}
+
+	int ImageData::getWidth() const 
+	{
+		return width;
+	}
+
+	int ImageData::getHeight() const 
+	{
+		return height;
+	}
+
+	void * ImageData::getData() const
+	{
+		ilBindImage(image);
+		return ilGetData();
+	}
+
+	int ImageData::getSize() const
+	{
+		return width*height*bpp;
+	}
+
+	void ImageData::setPixel(int x, int y, pixel c)
+	{
+		int tx = x > width-1 ? width-1 : x;
+		int ty = y > height-1 ? height-1 : y;
+		pixel * pixels = (pixel *)getData();
+		pixels[y*width+x] = c;
+	}
+
+	pixel ImageData::getPixel(int x, int y) const
+	{
+		int tx = x > width-1 ? width-1 : x;
+		int ty = y > height-1 ? height-1 : y;
+		pixel * pixels = (pixel *)getData();
+		return pixels[y*width+x];
+	}
+
+} // devil
+} // image
+} // love