Overview

The iGamePlay system has three major modules: audio processing, user input/game logic, and video. Figure 1 shows a schematic of the overall system.

The audio processing unit takes in audio input from an external source. Using the AC97 codec, the audio data is converted to a digital signal. A custom beat detection algorithm then extracts the beats from the music. This information is passed to the user input and game logic unit. This unit combines the audio cues with the user input to coordinate the internal state of the game. This includes tracking the speed and position of all objects in the game world. The game logic unit sends information about the game state to the video subsystem, which processes it and draws the game to the screen. The individual subsystems are discussed in more detail in the following sections.