wavelet - normal version

In this challenge we will render images and gifs of waveforms from a wav file.

The following functionality has been removed and needs to be implmeneted:

• AbsAvg - A sampler function that samples a slice and returns the average values of the slice's absolute values
• AvgAbs - A sampler function that samples a slice and returns the average of all absolute values within the slide
• Project - function that normalizes the values in a slice of integers to a given maximum
• DrawRectangle - A function that draws a rectangle of given bounds inside an image.
• RenderGopherFrame A function that returns a paletted image for a gif
• ColorGopherFunc - A closure ColorFunc function that returns the color of a pixel in the original image. Given new bounds.

Run the server with:

make run-server

Or:

go test ./... && go build && ./go-funk

You can see all the samples at:

curl http://localhost:8080/samples

Try rendering a couple waveforms with:

http://localhost:8080/waveform
http://localhost:8080/waveform?colors=reds

Try rendering a "real-time" gif of the samples:

http://localhost:8080/gif?count=5000&width=50&height=200
http://localhost:8080/gif2?count=5000&width=50&height=200
http://localhost:8080/gopher

To see the almost synched version of the gif with the song:

http://127.0.0.1:8080/rick/rick1.html
http://127.0.0.1:8080/rick/rick2.html