Main goal of this thesis is to create disassembler for Visual Basic 6 binary .exe files. There is description of Portable Executable files, description of disassembler, as well as functions of Windows API calls. Visual Basic disassembler should provide as much information about Visual Basic 6 file as possible. There is detailed structure specification of Visual Basic 6 binary files.

The thesis is dealing with implementation of IMPRODEMO image processing application. Author has used existing image processing libraries and has implemented complex application with modern user interface. In order to develop the application, he used framework WPF, method for developing application using tests called Test Driven Development, design pattern MVVM and MEF tool for easy integrating of extensions. Chapter two deals with these technologies and methodologies and describes them. Third chapter describes design of application and presents class diagrams. Fourth chapter describes test driven development and particular pitfalls that emerged from using this methodology. Fifth chapter presents the mean of integrating code written in C++ language into .NET framework and into C# language. At the end, whole work is summarized, resuls are defined and possibilities of resuming and extending the work are proposed.

Today, companies are developing processor demanding applications on the web, for example, 3D visualization software and video and audio software. Some of these companies have a native desktop application written in for example C++. These C++ codebases can consist of several hundred thousand lines of code, and companies would therefore like to reuse their codebase in the web version of the software. This thesis makes a performance comparison between two different approaches that can be taken to reuse the C++ codebase. The first approach is to compile the C++ codebase to WebAssembly and run it on the client-side. The second approach is to compile the C++ codebase to native code and run it on the server-side. It is not clear which approach to take if the goal is to achieve low execution times. This thesis will therefore answer the question of whether a client-side solution inWebAssembly is faster than a server-side solution in native code. To answer this question, this project work looked at one use case namely image processing. Two different web applications were developed, one that did image processing on the server-side in native code, and another one that did image processing on the client-side in WebAssembly. Execution time measurements were collected from both web applications. The results showed that for most algorithms WebAssembly was a factor of 1.5 slower than native code, without considering the additional delay from the internet that will affect the web application that performs image processing on the server-side. If this delay is taken into account, the web application that performs image processing on the client-side inWebAssembly will be faster than the server-side solution in native code for most users in the world. If the Round-Trip Time (RTT) is 1 ms the required average throughput needed to make the two web applications equally fast is 249 Mbps (Google Chrome) or 226 Mbps (Firefox). Most users in the world do not have such a high average throughput. / Idag utvecklar företag processorkrävande applikationer på webben, till exempel 3D-visualiseringsprogramvara och video- och ljudprogramvara. Några av dessa företag har även skrivbordsprogram skrivna i exempelvis C++. Dessa C++ kodbaser kan bestå av flera hundra tusen rader kod, och företag vill därför återanvända sin kodbas i webbversionen. Detta projektarbete gör en jämförelse mellan två olika tillvägagångssätt för att återanvända C++ kodbasen. Det första tillvägagångssättet är att kompilera C++ kodbasen till WebAssembly och köra koden på klientsidan. Det andra tillvägagångssättet är att kompilera C++ kodbasen till maskinkod och köra koden på serversidan. Det är inte klart vilken metod man ska ta om målet är att uppnå optimal prestanda. Detta projektarbete kommer därför att besvara frågan om en klientsidslösning i WebAssembly är snabbare än en serversidslösning i maskinkod. För att svara på den här frågan tittade projektarbetet på ett användningsfall, nämligen bildbehandling. Två olika webbapplikationer utvecklades, en som gjorde bildbehandling på serversidan i maskinkod och en annan som gjorde bildbehandling på klientsidan i WebAssembly. Körtidsmätningar samlades in från båda webbapplikationerna. Resultaten visade att för de flesta algoritmer var WebAssembly en faktor 1,5 långsammare än maskin kod, utan att ta hänsyn till den extra fördröjningen från internet som kommer att påverka webbapplikationen som utför bildbehandling på serversidan. Om denna fördröjning tas med i beräkningen kommer webbapplikationen som utför bildbehandling på klientsidan i WebAssembly att vara snabbare än serversidslösningen i maskinkod för de flesta användare i världen. Om tur och retur tiden (RTT) är 1 ms är den genomsnittliga genomströmning som krävs för att göra de två webbapplikationerna lika snabba 249 Mbps (Google Chrome) eller 226 Mbps (Firefox). De flesta användare i världen har inte så hög genomsnittlig genomströmning.

The aim of this project is to design an application for mobile platform which can insert virtual objects to camera shots without disturbing the scene. The application is implemented on Windows 8.1 and Windows Phone 8.1 platforms. The scene rendering is done in DirectX with C++ programming language and the user interface is created in XAML. This text describes the relevant fundamentals of augmented reality and the selected platform and it describes advanced programming techniques such as asynchronous resources loading or advanced post processing rendering techniques. The result of this project is a mobile application for inserting a virtual object with its shadow to camera shot. It is possible to set some aspects of the light and take a picture with the virtual object in high resolution.

Das World Wide Web befindet sich im Wandel von interaktiven Webseiten hin zu Web- Applikationen. Eine steigende Zahl von Anwendern führt täglich Aufgaben ausschließlich mit Hilfe des Web-Browsers durch. Dadurch wird das Web zu einer bedeutenden Plattform für Anwendungsentwicklung. Dieser Plattform fehlt jedoch heute noch die Rechenleistung nativer Applikationen. Microsoft Xax und Google Native Client (NaCl) sind zwei neue, unabhängige Technologien zur Entwicklung nativer Web-Applikationen. Sie ermöglichen die Erweiterung herkömmlicher Web-Applikationen durch kompilierten nativen und dennoch betriebssystemunabhängigen Programmcode. Die vorliegende Dissertation untersucht die Vor- und Nachteile nativer Web-Applikationen und analysiert zudem das tatsächliche Leistungsvermögen im Vergleich zu konventionellen JavaScript Web-Applikationen. Dazu wird eine experimentelle Leistungsanalyse von nativen Applikationen in C, JavaScript Web-Applikationen und NaCl nativen Web-Applikationen anhand vier unterschiedlicher Vergleichstests durchgeführt. Dabei werden die folgenden Leistungsaspekte betrachtet: mathematische Operationen (seriell und parallel), 3D-Grafikoperationen und Datenverarbeitung. Die Ergebnisse der Leistungsanalyse zeigen, dass NaCl Stärken in mathematischen und 3D-Grafikoperationen zu Grunde liegen, jedoch erhebliche Schwächen bei der Datenverarbeitung aufweist. Entsprechende Lösungsansätze zur Optimierung der Anwendung werden erarbeitet und erörtert. Eine Bewertung anhand technischer und nicht-technischer Kriterien komplementiert die Ergebnisse der Leistungsanalyse. Darüber hinaus werden die technischen, politischen und strategischen Treiber für NaCls Marktdurchdringung diskutiert. / The World Wide Web is amidst a transition from interactive websites to web applications. An increasing number of users perform their daily computing tasks entirely within the web browser, turning the Web into an important platform for application development. The Web as a platform, however, lacks the computational performance of native applications. This problem has motivated the inception of Microsoft Xax and Google Native Client (NaCl), two independent projects that facilitate the development of native web applications. These allow the extension of conventional web applications with compiled native code, while maintaining operating system portability. This dissertation determines the benefits and drawbacks of native web applications. It also examines the actual performance capabilities of JavaScript web applications. An experimental performance analysis is undertaken in order to determine and compare the performance characteristics of native C applications, JavaScript web applications, and NaCl native web applications. Four application benchmarks consider different performance aspects: number crunching (serial and parallel), 3D graphics performance, and data processing. The results confirm that NaCl''s performance in computational tasks and 3D graphics is impeccable. On the other hand, it shows substantial limitations in data processing. These are evaluated and possible solutions are discussed. The results of the performance analysis are complemented with an evaluation on the basis of technical and non-technical criteria and a discussion of the technical, political, and strategic drivers for NaCl.