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#!/usr/bin/env ruby
# -*- encoding: binary -*-
# Copyright (C) 2013, Eric Wong <normalperson@yhbt.net> and all contributors
# License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
#
# Note: no idea what I'm doing, especially w.r.t. curses
require 'dtas/unix_client'
require 'dtas/rg_state'
require 'dtas/sigevent'
require 'curses'
require 'yaml'
se = DTAS::Sigevent.new
trap(:WINCH) { se.signal }
w = DTAS::UNIXClient.new
w.req_ok('watch')
c = DTAS::UNIXClient.new
cur = YAML.load(c.req('current'))
readable = [ se, w, $stdin ]
# current rg mode
rg_mode = DTAS::RGState::RG_MODE.keys.unshift("off")
if (rg = cur["rg"]) && (rg = rg["mode"])
rg_mode_i = rg_mode.index(cur["rg"]["mode"])
else
rg_mode_i = 0
end
def update_tfmt(prec)
prec == 0 ? '%H:%M:%S' : "%H:%M:%S.%#{prec}N"
end
trap(:INT) { exit(0) }
trap(:TERM) { exit(0) }
# time precision
prec_nr = 1
prec_step = (0..9).to_a
prec_max = prec_step.size - 1
tfmt = update_tfmt(prec_step[prec_nr])
events = []
interval = 1.0 / 10 ** prec_nr
def show_events(lineno, screen, events)
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
Curses.addstr('Events:')
maxy = screen.maxy - 1
maxx = screen.maxx
events.reverse_each do |e|
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
extra = e.size/maxx
break if (lineno + extra) >= maxy
# deal with long lines
if extra
rewind = lineno
extra.times do
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
end
Curses.setpos(rewind, 0)
Curses.addstr(e)
Curses.setpos(lineno, 0)
else
Curses.addstr(e)
end
end
# discard events we can't show
nr_events = events.size
if nr_events > maxy
events = events[(nr_events - maxy)..-1]
until lineno >= screen.maxy
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
end
else
Curses.setpos(maxy + 1, 0)
Curses.clrtoeol
end
end
def fmt_to_s(f)
r = [ f['rate'], f['channels'], f['type'], f['bits'] ]
r.compact!
r.join(',')
end
def rg_string(rg, current)
rv = "rg mode=#{rg['mode']||'off'}"
defaults = DTAS::RGState::RG_DEFAULT
# don't show things that are too rare
%w(preamp fallback_gain).each do |param|
val = rg[param] || defaults[param]
rv << " #{param}=#{val}"
end
env = current && current["env"] and rv << " / RGFX='#{env['RGFX']}'"
rv
end
begin
Curses.init_screen
Curses.nonl
Curses.cbreak
Curses.noecho
screen = Curses.stdscr
screen.scrollok(true)
screen.keypad(true)
loop do
lineno = -1
pfmt = cur['format']
if current = cur['current']
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
Curses.addstr(current['infile'] || current['command'])
elapsed = Time.now.to_f - current['spawn_at']
if (nr = cur['current_initial']) && (current_format = current['format'])
rate = current_format['rate'].to_f
elapsed += nr / rate
total = " [#{Time.at(current['samples'] / rate).strftime(tfmt)}]"
fmt = "(#{fmt_to_s(current_format)} > #{fmt_to_s(pfmt)})"
else
total = ""
fmt = fmt_to_s(pfmt)
fmt = "(#{fmt} > #{fmt})"
end
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
Curses.addstr("#{Time.at(elapsed).strftime(tfmt)}#{total} #{fmt}")
else
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
Curses.addstr(cur['paused'] ? 'paused' : 'idle')
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
end
rgs = rg_string(cur["rg"] || {}, current)
Curses.setpos(lineno += 1, 0)
Curses.clrtoeol
Curses.addstr(rgs)
show_events(lineno, screen, events)
Curses.refresh # draw and wait
r = IO.select(readable, nil, nil, current ? interval : nil) or next
r[0].each do |io|
case io
when se
se.readable_iter {} # noop, just consume the event
Curses.clear
when w
event = w.res_wait
events << "#{Time.now.strftime(tfmt)} #{event}"
# something happened, refresh current
# we could be more intelligent here, maybe, but too much work.
cur = YAML.load(c.req('current'))
when $stdin
# keybindings taken from mplayer / vi
case key = Curses.getch
when "j" then c.req_ok("seek -5")
when "k" then c.req_ok("seek +5")
when Curses::KEY_DOWN then c.req_ok("seek -60")
when Curses::KEY_UP then c.req_ok("seek +60")
when Curses::KEY_LEFT then c.req_ok("seek -10")
when Curses::KEY_RIGHT then c.req_ok("seek +10")
when Curses::KEY_BACKSPACE then c.req_ok("seek 0")
# yes, some of us have long audio files
when Curses::KEY_PPAGE then c.req_ok("seek +600")
when Curses::KEY_NPAGE then c.req_ok("seek -600")
when "9" then c.req_ok("rg preamp-=1")
when "0" then c.req_ok("rg preamp+=1")
when "F" then c.req_ok("rg fallback_gain+=1")
when "f" then c.req_ok("rg fallback_gain-=1")
when " "
c.req("play_pause")
when "r" # cycle through replaygain modes
rg_mode_i >= 1 and c.req_ok("rg mode=#{rg_mode[rg_mode_i -= 1]}")
when "R"
rg_mode_i < (rg_mode.size - 1) and
c.req_ok("rg mode=#{rg_mode[rg_mode_i += 1]}")
when "p" # lower precision of time display
if prec_nr >= 1
prec_nr -= 1
tfmt = update_tfmt(prec_step[prec_nr])
interval = 1.0 / 10 ** prec_nr
end
when "P" # increase precision of time display
if prec_nr < prec_max
prec_nr += 1
tfmt = update_tfmt(prec_step[prec_nr])
interval = 1.0 / 10 ** prec_nr
end
when 27 # TODO readline/edit mode?
else
Curses.setpos(screen.maxy - 1, 0)
Curses.clrtoeol
Curses.addstr("unknown key=#{key.inspect}")
end
end
end
end
rescue EOFError
Curses.close_screen
abort "dtas-player exited"
ensure
Curses.close_screen
end
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