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# -*- coding: utf-8 -*-
# Songwrite 3
# Copyright (C) 2001-2016 Jean-Baptiste LAMY -- jibalamy@free.fr
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys, subprocess, os, fcntl
from io import BytesIO
import PyQt5.QtCore as qtcore
import editobj3
import songwrite3, songwrite3.globdef as globdef
_p = None
_midi = ""
_loop = 0
_tracker = None
_last_tracker = None
_output = b""
def is_playing(): return _p and (_p.poll() is None)
def stop():
global _p, _tracker
if not _p is None:
if _tracker:
_tracker(-1)
_tracker = None
try:
_p.terminate()
_p.kill()
except OSError:
sys.excepthook(*sys.exc_info())
_p = None
def play(midi, loop = 0, tracker = None):
global _p, _midi, _loop, _tracker, _last_tracker, _output
stop()
if not globdef.config.DISPLAY_PLAY_BAR: tracker = None
_midi = midi
_loop = loop
_tracker = _last_tracker = tracker
_output = b""
_play()
def _play():
global _p, _midi, _loop, _tracker
if globdef.config.MIDI_USE_TEMP_FILE:
import tempfile
file = tempfile.mktemp(".midi")
open(file, "w").write(_midi)
_p = p = subprocess.Popen(globdef.config.MIDI_COMMAND % file, shell = True, stdin = subprocess.PIPE, stdout = subprocess.PIPE)
else:
_p = p = subprocess.Popen(globdef.config.MIDI_COMMAND, shell = True, stdin = subprocess.PIPE, stdout = subprocess.PIPE)
_p.stdin.write(_midi)
_p.stdin.close()
fcntl.fcntl(p.stdout.fileno(), fcntl.F_SETFL, os.O_NONBLOCK)
try: _play.qt_timer.stop()
except: pass
_play.qt_timer = qtcore.QTimer()
_play.qt_timer.timeout.connect(on_timer)
_play.qt_timer.setSingleShot(False)
if _tracker: _play.qt_timer.setInterval( 50)
else: _play.qt_timer.setInterval(300)
_play.qt_timer.start()
def on_timer():
global _tracker, _output
try:
if _p is None:
_play.qt_timer.stop() #return 0 # Stop was called
return
r = _p.poll()
if r is None:
if _tracker:
output = _p.stdout.read()
if output:
lines = (_output + output).split(b"\n")
_output = lines[-1]
if len(lines) > 1:
line = lines[-2]
try:
if b":" in line: t = int(line[line.rfind(b":") + 3 :])
else: t = int(line)
except: return # 1
_tracker(t)
if t == -1:
_tracker = None # Tracking has reached its end !
stop()
if _loop:
_tracker = _last_tracker
_play()
else:
_play.qt_timer.stop()
if (r == 0) and _loop:
_tracker = _last_tracker
_play()
except: sys.excepthook(*sys.exc_info())
noteplayer = None
def play_note(instrument, value):
if not globdef.config.PLAY_AS_TYPING: return
stop()
global noteplayer
if not noteplayer:
noteplayer = songwrite3.model.Song()
noteplayer.partitions.append(songwrite3.model.Partition(noteplayer))
noteplayer.partitions[0].notes.append(songwrite3.model.Note(noteplayer.partitions[0], 0, 48, 0))
noteplayer.partitions[0].instrument = instrument
noteplayer.partitions[0].notes[0].value = value
play(songwrite3.midi.song_2_midi(noteplayer))
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