present

#!/bin/bash

PYFILE=~/bin/present.py

DEFAULTCONFIG=$(grep -E 'DEFAULT_CONFIG_FILE\s*=\s*' "${PYFILE}" | cut -d'=' -f 2 | sed "s/'//g" | sed 's/^\s*//g' )
DEFAULTCONFIG="${DEFAULTCONFIG/#\~/$HOME}"
if [ ! -r "$DEFAULTCONFIG" ]; then
  read -p "No default config file found at '${DEFAULTCONFIG}' - should I create one? " -n 1 -r
  echo    # (optional) move to a new line
  if [[ $REPLY =~ ^[Yy]$ ]]
  then
      cat >> "${DEFAULTCONFIG}" << EOF
[DEFAULT]
; these settings preconfigure some fields in the user interface.
; for example the text field to resize the slide viewer
ResizeGeom = 1920x1080
; should animated slides be produced? animated slides are considered screencasts of
; the slide viewer. use this if you plan to somehow interact with your slides, e.g.
; paint on top of them or show something with the mouse pointer
RecordAnimatedSlides = no
; should the webcam be recorded?
RecordWebcam = no
; should an additional screencast be produced of a specific region of the screen?
RecordRegion = no
; if yes, what region should be recorded?
RecordRegionGeom = 1024x768+500+100
; should a WebVTT file be written during recording?
; the WebVTT file contains metadata compatible with Panopto, for example.
; use this if you plan to upload the resulting video to such a platform
RecordWriteWebVTT = yes
; all the options above can be changed in the user interface while the presenter is running
; having these settings in here should just help you avoid repetetive clicks

; these options configure the recording and production using ffmpeg. adjust these to your needs. 
; most importantly, choose correct recording devices here
FfmpegSourceAudio = -f alsa -thread_queue_size 2048 -i hw:0
FfmpegSourceWebcam = -f v4l2 -ts mono2abs -video_size 960x540 -input_format mjpeg -thread_queue_size 1024 -i /dev/video0
FfmpegOutputWebcam = -c:v libx264 -preset faster -pix_fmt yuv420p
; if you adjust these settings make sure to place @WIDTH@, @HEIGHT@, @X@, and @Y@ somwhere
; in this option as these are replaced later when starting the screencast recording
FfmpegSourceScreen = -f x11grab -show_region 1 -video_size @WIDTH@x@HEIGHT@ -r 10 -thread_queue_size 1024 -i :0.0+@X@,@Y@
FfmpegOutputScreen = -c:v libx264 -preset ultrafast -qp 0 -pix_fmt yuv444p

; if a pdf is presented, this is used to configure the size of the slide viewer. 
; if omitted, the slide viewer will take up as much screen space as your monitor's
; resolution allows. this doesn't affect the size of the resulting slide show video.
; to configure the video's size, use RecordProduceCustomGeom
SlideGeom = 1920x1080
; the presented pdf file is converted to a png internally. this configures the resolution
; and the size of the internal representation of pdf pages. note that this affects the 
; production of the slide show video! choose a dpi and height factor here suche that the 
; RecordProduceCustomGeom will look good.
SlideLoadDpi = 300
; the height factor determines the size of the png representation of your pdf. it is 
; max_screen_heigth * SlideLoadHeightFactor
; the width of the png will be chosen automatically
SlideLoadHeightFactor = 2.0

; should the slide titles show up in the notes section?
NotesShowTitle = no

; when resizing the window, should the aspect ratio of the current dimensions
; be kept?
KeepAspectRatioWhileResizing = yes

; set this to yes to avoid being ask for every single file
RecordProduceEverything = no

; fine-tune what is being produced after recording:
; merged webcam and audio
;RecordProduceWebcamPlusAudio = yes

; merged screencast and audio
;RecordProduceScreencastPlusAudio = yes

; slideshow from PDF presentation
;RecordProduceSlideshow = yes

; merged slideshow and audio
;RecordProduceSlidesPlusAudio = yes

; screencast overlayed with webcam video. see below for more options
; regarding positioning webcam video above screncast
;RecordProduceScreencastOverlay = yes

; the following option produces an overlayed screencast which is prepended
; by a png file for a given amount of time (see next option). 
; the png file has to have the filename >project_or_pdf_name>-title.png
;RecordProduceScreencastOverlayWithTitle = no
;RecordProduceScreencastOverlayIntroDuration = 3

; the following option appends an outro to an overlayed screencast
;RecordProduceScreencastOverlayOutroDuration = 3
;RecordProduceScreencastOverlayOutroImg = /path/to/outro.png

; the following three options configure how screencast and webcam videos are
; overlayed. the first is the size of the webcam video. it is
; webcam_size = screencast_size * ( 1/RecordProduceScreencastOverlayFractionWebcam)
RecordProduceScreencastOverlayFractionWebcam = 6
; where in the screencast video should the top left corner of the webcam video
; be positioned?
RecordProduceScreencastOverlayPositionWebcamX = 1700
RecordProduceScreencastOverlayPositionWebcamY = 500

; should the audio be compressed with aac codec during production?
RecordProduceCompressAudio = yes

; Sometimes, webcam and audio can't be synchronized correctly. In that case,
; you can use this option to add an additional offset between audio and webcam.
; RecordProduceAdditionalWebcamOffset = 00:00:00.250


; if a slideshow is produced from static pdf presentation, this size is used to
; configure the output size of the slideshow video. make sure to set a SlideLoadDpi
; and SlideLoadHeightFactor that 'supports' this resolution specified here
RecordProduceCustomGeom = 1920x1080

; if a slideshow is produced, a <project_name>-title.png will be exported using
; this size.
RecordTitleImageGeom = 960x540
EOF
  fi
fi

python3 "${PYFILE}" "$@"