Add resize test.

src/nvtt/tools/resize.cpp

@@ -0,0 +1,135 @@
+// Copyright NVIDIA Corporation 2007 -- Ignacio Castano <icastano@nvidia.com>
+// 
+// Permission is hereby granted, free of charge, to any person
+// obtaining a copy of this software and associated documentation
+// files (the "Software"), to deal in the Software without
+// restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following
+// conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+// OTHER DEALINGS IN THE SOFTWARE.
+
+#include <nvcore/Ptr.h>
+#include <nvcore/StrLib.h>
+#include <nvcore/StdStream.h>
+#include <nvcore/Containers.h>
+
+#include <nvimage/Image.h>
+#include <nvimage/ImageIO.h>
+#include <nvimage/FloatImage.h>
+#include <nvimage/Filter.h>
+#include <nvimage/DirectDrawSurface.h>
+
+#include <nvmath/Color.h>
+#include <nvmath/Vector.h>
+
+#include <math.h>
+
+#include "cmdline.h"
+
+static bool loadImage(nv::Image & image, const char * fileName)
+{
+	if (nv::strCaseCmp(nv::Path::extension(fileName), ".dds") == 0)
+	{
+		nv::DirectDrawSurface dds(fileName);
+		if (!dds.isValid())
+		{
+			printf("The file '%s' is not a valid DDS file.\n", fileName);
+			return false;
+		}
+		
+		dds.mipmap(&image, 0, 0); // get first image
+	}
+	else
+	{
+		// Regular image.
+		if (!image.load(fileName))
+		{
+			printf("The file '%s' is not a supported image type.\n", fileName);
+			return false;
+		}
+	}
+
+	return true;
+}
+
+
+int main(int argc, char *argv[])
+{
+	MyAssertHandler assertHandler;
+	MyMessageHandler messageHandler;
+
+	float scale = 0.5f;
+	nv::Path input;
+	nv::Path output;
+
+	// Parse arguments.
+	for (int i = 1; i < argc; i++)
+	{
+		// Input options.
+		if (strcmp("-s", argv[i]) == 0)
+		{
+			if (i+1 < argc && argv[i+1][0] != '-') {
+				scale = atof(argv[i+1]);
+				i++;
+			}
+		}
+		else if (argv[i][0] != '-')
+		{
+			input = argv[i];
+
+			if (i+1 < argc && argv[i+1][0] != '-') {
+				output = argv[i+1];
+			}
+
+			break;
+		}
+	}
+
+	if (input.isNull() || output.isNull())
+	{
+		printf("NVIDIA Texture Tools - Copyright NVIDIA Corporation 2007\n\n");	
+		
+		printf("usage: resize [options] input [output]\n\n");
+		
+		printf("Diff options:\n");
+		printf("  -s scale \tScale factor (default = 0.5).\n");
+
+		return 1;
+	}
+
+	nv::Image image;
+	if (!loadImage(image, input)) return 0;
+
+	nv::FloatImage fimage(&image);
+	fimage.toLinear(0, 3);
+	
+//	nv::AutoPtr<nv::FloatImage> fresult(fimage.fastDownSample());
+	
+//	nv::Kernel1 k(10);
+//	k.initKaiser(4, scale, 20);
+//	nv::AutoPtr<nv::FloatImage> fresult(fimage.downSample(k, nv::FloatImage::WrapMode_Clamp));
+	
+	nv::AutoPtr<nv::FloatImage> fresult(fimage.downSample(image.width() * scale, image.height() * scale, nv::FloatImage::WrapMode_Mirror));
+	
+	
+	nv::AutoPtr<nv::Image> result(fresult->createImageGammaCorrect());
+
+	nv::StdOutputStream stream(output);
+	nv::ImageIO::saveTGA(stream, result.ptr());
+	
+	return 0;
+}
+