make playback interactive (respond to keypresses, etc)

[1dancook]

It would be better if playback could respond to keypresses.

If the playback backend continues to be mpv, there may be a way to send messages to mpv based on keypresses. Keypresses would have to be captured using something like prompt-toolkit.

This would require a basic re-write (to make the entire app a prompt-toolkit app).

[1dancook]

Some ideas:

This could be a prompt that iterates through a list of audio files.

For the CURRENT audio file:

• prompt for input
• parse input
• do the action

While an audio file is playing, having keybinds for:

• play / pause / stop
• next / previous (?)
• marking the start and end (live cutting)

Other notes:

Interactive mode would have to disable everything else (narration, tones, delays).

Marking start/end times while listening

Another thing to think about would be how to mark a start and ending point.

I'm thinking about how, while in class, it is often the case that I need to mark a start and end point to use to playback again. Some audio files are not cut, but I need to repeat one section of it.

an AudioFile object should carry with it a start_mark and end_mark.

There should be some key bindings to set these like s/e as well as something to reset it.

    mark start = m s
    mark end   = m e
    mark reset = m r

Potential list of commands to parse from a prompt

play   / p / enter?  # play the current file 
repeat 1  # set repeat to 1
delay 10    # set delay (between repeats) to n seconds
next / > # go to next file
previous / < # go to previous file
mark start 5  / ms 5  # mark start @ 5s (current file)
mark end 10  / me 40  # mark end   @ 40s (current file)
mark reset   / mr     # reset marks for current file
quit

Ideas about the display

It should show a list of the files that shows certain information:

• the currently selected file
• the length of the file
• start/end marks
• how many times the file has been played