Funny :w moments
Signed-off-by: Skylar "The Cobra" Widulski <cobra@vern.cc>
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;;;
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;;; Copyright (C) 2023 Skylar Widulski
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;;;
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;;; This file is part of Yammer.
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;;;
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;;; Yammer is free software: you can redistribute it and/or modify it under the
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;;; terms of the GNU General Public License as published by the Free Software
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;;; Foundation, either version 3 of the License, or (at your option) any later
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;;; version.
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;;;
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;;; Yammer is distributed in the hope that it will be useful, but WITHOUT ANY
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;;; WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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;;; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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;;; details.
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;;;
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;;; You should have received a copy of the GNU General Public License along with
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;;; Yammer. If not, see <https://www.gnu.org/licenses/>.
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;;;
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(define-module (yammer)
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#:declarative? #f
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#:use-module (sdl2)
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#:use-module (sdl2 blend-mode)
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#:use-module (sdl2 events)
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#:use-module (sdl2 render)
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#:use-module (sdl2 rect)
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#:use-module (sdl2 surface)
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#:use-module (sdl2 video)
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#:use-module (ice-9 binary-ports)
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#:use-module (ice-9 futures)
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#:use-module (ice-9 receive)
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#:use-module (ice-9 threads)
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#:use-module (ice-9 q)
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#:use-module (rnrs bytevectors)
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#:use-module (scheme base)
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#:use-module (srfi srfi-1)
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#:use-module (system foreign)
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#:use-module (yammer fftw))
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(add-to-load-path ".")
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(define moving-average 0)
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(load "config.scm")
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(define recip-fps (/ 1 fps))
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(define sample-size (* 4 (round (* 3 (* (/ 44100 4) recip-fps)))))
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(define vsize (exact (/ sample-size 4)))
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(define plan #f)
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(if fft (monitor (set! plan (init_plan vsize))))
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(define window #f)
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(define win-id #f)
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(define renderer #f)
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(define bv (make-bytevector sample-size))
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(define queue (make-q))
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(define (chunk2 lst)
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(if (>= (length lst) 2)
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(cons (take lst 2)
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(chunk2 (drop lst 2)))
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'()))
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(define (open-fifo filename)
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(define fd (open-input-file filename))
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(fcntl fd F_SETFL (logior O_NONBLOCK
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(fcntl fd F_GETFL)))
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(setvbuf fd 'block sample-size)
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fd)
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(define (read-fifo fd)
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(if (port-closed? fd)
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(set! fd (open-fifo fifo-file)))
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(define new-bv #vu8())
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(define bytes-read 0)
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(while (< bytes-read sample-size)
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(set! new-bv (bytevector-append new-bv (bytevector (read-u8 fd))))
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(set! bytes-read (1+ bytes-read))
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(set! new-bv (bytevector-append
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new-bv (get-bytevector-n fd (- sample-size bytes-read))))
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(set! bytes-read (bytevector-length new-bv)))
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(enq! queue new-bv)
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(if (>= (q-length queue) queue-size)
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(set! bv (deq! queue))))
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(define (draw ren plst)
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(clear-renderer ren)
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(define init-surf #f)
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(define surf #f)
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(receive (x y) (window-size window)
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(set! init-surf (make-rgb-surface x y 32))
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(set! surf (convert-surface-format init-surf 'rgba8888))
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(delete-surface! init-surf)
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(fill-rect surf #nil color)
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(let ((y-mid (round/ y 2)))
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(do ((i 0 (+ i (/ x (length plst))))
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(j 0 (1+ j)))
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((>= j (length plst)))
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(begin
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(fill-rect
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surf
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(make-rect
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(floor i) 0
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(ceiling/ x (length plst))
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(- y-mid (abs (round/ (* y (car (list-ref plst j)))
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(/ 76800
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(if (= smoothing-mode moving-average)
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(/ i scale)
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scale))))))
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bgcolor)
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(let ((n (abs (round/ (* y (cadr (list-ref plst j)))
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(/ 76800
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(if (= smoothing-mode moving-average)
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(/ i scale)
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scale))))))
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(fill-rect
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surf
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(make-rect
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(floor i) (+ y-mid n)
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(ceiling/ x (length plst))
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(- y-mid n))
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bgcolor))))))
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(define texture (surface->texture ren surf))
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(render-copy ren texture)
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(present-renderer ren)
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(delete-texture! texture)
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(delete-surface! surf))
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(define (smooth lst type)
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(define ret '())
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(define window 0)
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(cond
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((= type moving-average)
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(do ((i 1 (1+ i)))
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((>= i (- (length lst) moving-average-block-size)))
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(set! window 0)
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(do ((j 0 (1+ j)))
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((>= j moving-average-block-size))
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(set! window (+ window (list-ref lst (+ i j)))))
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(set! window (round/ window moving-average-block-size))
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(set! ret (append ret (list window))))))
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ret)
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(define (lp ren fft?)
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(define read-future #f)
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(define sleep-future #f)
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(define plst '())
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(while (not (window-closed-event? (poll-event)))
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(set! sleep-future (future (usleep (round (* recip-fps 1000)))))
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(if (= (bytevector-length bv) sample-size)
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(begin
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(set! plst (chunk2 (bytevector->sint-list
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bv (native-endianness) 2)))
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(set! read-future (future (read-fifo fd)))
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(if fft?
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(if (not (equal? smoothing-mode #f))
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(draw ren
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(map list
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(smooth (s16vector->list
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(do-dft plan (map car plst)
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(length plst)))
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smoothing-mode)
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(smooth (s16vector->list
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(do-dft plan (map cadr plst)
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(length plst)))
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smoothing-mode)))
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(draw ren
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(map list
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(s16vector->list
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(do-dft plan (map car plst)
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(length plst)))
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(s16vector->list
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(do-dft plan (map cadr plst)
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(length plst))))))
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(draw ren plst))))
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(touch sleep-future)))
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(define fd (open-fifo fifo-file))
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(sdl-init '(video events))
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(set! window (make-window #:title "Yammer"))
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(set! win-id (window-id window))
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(set-window-resizable! window #t)
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(set! renderer (make-renderer window))
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(lp renderer fft)
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(delete-renderer! renderer)
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(close-window! window)
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(sdl-quit)
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(close-port fd)
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(if fft (monitor (fftw_destroy_plan plan)))
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