1 files changed, 119 insertions, 0 deletions
diff --git a/demo/DemoApp/bitmap.cpp b/demo/DemoApp/bitmap.cpp
new file mode 100644
index 0000000..e909653
--- /dev/null
+++ b/demo/DemoApp/bitmap.cpp
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2014-2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA CORPORATION is strictly prohibited.
+ */
+
+#include <stdio.h>
+
+#include "bitmap.h"
+
+Bitmap::Bitmap() : data(NULL)
+{
+
+}
+
+Bitmap::~Bitmap()
+{
+	delete[] data;
+	data = NULL;
+}
+
+int Bitmap::create(int w, int h, int bpp)
+{
+	const int imagesize = w*h*(bpp / 8);
+	headerField0 = 'B';
+	headerField1 = 'M';
+	size = 54 + imagesize;
+	reserved1 = 0;
+	reserved2 = 0;
+	offset = 54;
+	headerSize = 40;
+	width = w;
+	height = h;
+	colorPlanes = 1;
+	bitsPerPixel = bpp;
+	compressionMethod = 0;
+	imageSize = imagesize;
+	hRes = 2000;
+	vRes = 2000;
+	numColors = 0;
+	numImportantColors = 0;
+	data = new unsigned char[imagesize];
+	return 0;
+}
+
+int Bitmap::write(FILE* stream)
+{
+	if (stream == NULL || data == NULL) return -1;
+	fwrite(&headerField0, 1, 1, stream);
+	fwrite(&headerField1, 1, 1, stream);
+	fwrite(&size, 4, 1, stream);
+	fwrite(&reserved1, 2, 1, stream);
+	fwrite(&reserved2, 2, 1, stream);
+	fwrite(&offset, 4, 1, stream);
+	fwrite(&headerSize, 4, 1, stream);
+	fwrite(&width, 4, 1, stream);
+	fwrite(&height, 4, 1, stream);
+	fwrite(&colorPlanes, 2, 1, stream);
+	fwrite(&bitsPerPixel, 2, 1, stream);
+	fwrite(&compressionMethod, 4, 1, stream);
+	fwrite(&imageSize, 4, 1, stream);
+	fwrite(&hRes, 4, 1, stream);
+	fwrite(&vRes, 4, 1, stream);
+	fwrite(&numColors, 4, 1, stream);
+	fwrite(&numImportantColors, 4, 1, stream);
+
+	if (compressionMethod == 0)
+	{
+		fwrite(data, 1, imageSize, stream);
+	}
+	else
+	{
+		printf("Write format not supported\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+int Bitmap::read(FILE* stream)
+{
+	if (stream == NULL) return -1;
+	size_t readCount = 0;
+	readCount += fread(&headerField0, 1, 1, stream);
+	readCount += fread(&headerField1, 1, 1, stream);
+	readCount += fread(&size, 4, 1, stream);
+	readCount += fread(&reserved1, 2, 1, stream);
+	readCount += fread(&reserved2, 2, 1, stream);
+	readCount += fread(&offset, 4, 1, stream);
+	readCount += fread(&headerSize, 4, 1, stream);
+	readCount += fread(&width, 4, 1, stream);
+	readCount += fread(&height, 4, 1, stream);
+	readCount += fread(&colorPlanes, 2, 1, stream);
+	readCount += fread(&bitsPerPixel, 2, 1, stream);
+	readCount += fread(&compressionMethod, 4, 1, stream);
+	readCount += fread(&imageSize, 4, 1, stream);
+	readCount += fread(&hRes, 4, 1, stream);
+	readCount += fread(&vRes, 4, 1, stream);
+	readCount += fread(&numColors, 4, 1, stream);
+	readCount += fread(&numImportantColors, 4, 1, stream);
+
+	if (compressionMethod == 0)
+	{
+		delete[] data;
+		data = new unsigned char[imageSize];
+		readCount += fread(data, 1, imageSize, stream);
+	}
+	else
+	{
+		printf("Write format not supported\n");
+		return -1;
+	}
+
+	return 0;
+}