Audio Visual Data Structures.md

Image Encoding

• Triads of 8-bit unsigned ints for RGB values
• 8 bits is ~ 256 possible brightnesses per channels
• 24-bit bitmaps allow for significantly more levels of brightness

Audio Encoding

• Raw Pulse-Code Modulation
• Normal digital audio uses 44,100 samples per second, where each sample has an amplitued of 16-bit
• To play in a hearable way, the audio data needs to go back through "Digital Analog Conversion" (DAC)

Video Encoding

• Combination of Image Encoding and Audio Encoding techniques.

Machine Code and Assembly

• Each CPU architecture has a proprietary instruction set of binaries codes that triggeers the processor to perform operations
• The CPU speaks machine code, but this is written in a more human readible syntax called Assembly Language or Assembler

Compilers

• Higher level langauges are written in abstract data types and control structures.
• A compiler takes this higher level language as an input and produces machine code.

/// Create a Pointer
char ch = 'c'; // declare and instatiate 'c' as data type of char with a value of 'c'
char t; // declare a char named t. It hasn't been instantiated
char *chptr = &ch; // create a pointer named *chptr that points at the ch char
t = *chptr; // 



Higher