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# -*- coding: iso-8859-15 -*-
### jack_main_loop: the main encoding loop for
### jack - extract audio from a CD and encode it using 3rd party software
### Copyright (C) 1999-2004 Arne Zellentin <zarne@users.sf.net>
### 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 2 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, write to the Free Software
### Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import string
import signal
import select
import time
import sys
import os
import jack_functions
import jack_ripstuff
import jack_encstuff
import jack_children
import jack_display
import jack_helpers
import jack_targets
import jack_workers
import jack_status
import jack_utils
import jack_misc
import jack_term
from jack_globals import *
def main_loop(mp3s_todo, wavs_todo, space, dae_queue, enc_queue, track1_offset):
global_error = 0 # remember if something went wrong
actual_load = -2 # this is always smaller than max_load
waiting_load = 0 # are we waiting for the load to drop?
waiting_space = 0 # are we waiting for disk space to be freed?
space_waiting = 0 # how much space _running_ subprocesses will consume
space_adjust = 0 # by how much space has been modified
blocked = 0 # we _try_ do detect deadlocks
cycles = 0 # it's sort of a timer
last_update = 0 # screen updates are done once per second
pause = 0 # no new encoders are started if pause==1
flags = "[ ]" # runtime controllable flags
enc_running = 0 # what is going on?
dae_running = 0 # what is going on?
rotate="/-\\|"
rotate_ball=" .o0O0o."
rot_cycle = len(rotate)
rot_ball_cycle = len(rotate_ball)
rot_count = 0
global_done = 0
first_encoder = 1
ext = jack_targets.targets[jack_helpers.helpers[cf['_encoder']]['target']]['file_extension']
global_blocks = jack_functions.tracksize(wavs_todo)[BLOCKS] + jack_functions.tracksize(mp3s_todo)[BLOCKS]
#####################
### MAIN LOOP ###
#####################
global_start = time.time()
while mp3s_todo or enc_queue or dae_queue or enc_running or dae_running:
# feed in the WAVs which have been there from the start
if mp3s_todo and jack_functions.tracksize(mp3s_todo[0])[ENC] < space:
waiting_space = 0
enc_queue.append(mp3s_todo[0])
space = space - jack_functions.tracksize(mp3s_todo[0])[ENC]
jack_status.enc_stat_upd(mp3s_todo[0][NUM], "waiting for encoder.")
mp3s_todo = mp3s_todo[1:]
# start new DAE subprocess
elif (len(enc_queue) + enc_running) < (cf['_read_ahead'] + cf['_encoders']) and dae_queue and dae_running < cf['_rippers'] and ((jack_functions.tracksize(dae_queue[0])[BOTH] < space) or (cf['_only_dae'] and jack_functions.tracksize(dae_queue[0])[WAV] < space) or (cf['_otf'] and jack_functions.tracksize(dae_queue[0])[ENC] < space)):
waiting_space = 0
this_is_ok = 1
if pause:
this_is_ok = 0
jack_status.dae_stat_upd(dae_queue[0][NUM], "Paused. Press 'c' to continue.")
elif cf['_rip_from_device']:
all_tracks_on_cd = jack_functions.gettoc(cf['_toc_prog'])
if not jack_utils.cmp_toc_cd(jack_ripstuff.all_tracks_orig, all_tracks_on_cd, what=(NUM, LEN)):
while dae_queue:
track = dae_queue[0]
dae_queue = dae_queue[1:]
jack_status.dae_stat_upd(track[NUM], "Wrong disc - aborting this track")
global_error = global_error + 1
this_is_ok = 0
if this_is_ok:
if cf['_only_dae']:
space_waiting = space_waiting + jack_functions.tracksize(dae_queue[0])[WAV]
space = space - jack_functions.tracksize(dae_queue[0])[WAV]
elif cf['_otf']:
space_waiting = space_waiting + jack_functions.tracksize(dae_queue[0])[ENC]
space = space - jack_functions.tracksize(dae_queue[0])[ENC]
else:
space_waiting = space_waiting + jack_functions.tracksize(dae_queue[0])[BOTH]
space = space - jack_functions.tracksize(dae_queue[0])[BOTH]
dae_running = dae_running + 1
track = dae_queue[0]
dae_queue = dae_queue[1:]
if cf['_otf']:
# note: image_reader can't do otf at the moment.
jack_status.dae_stat_upd(track[NUM], ":DAE: waiting for status report...")
if cf['_encoder'] in ("lame", "gogo", "flac", "mppenc"):
jack_status.enc_stat_upd(track[NUM], "[no otf status for %s]" % cf['_encoder'])
else:
jack_status.enc_stat_upd(track[NUM], "waiting for encoder.")
enc_running = enc_running + 1
if first_encoder:
first_encoder = 0
global_start = time.time()
data = jack_workers.start_new_otf(track, cf['_ripper'], cf['_encoder'])
jack_children.children.append(data['rip'])
jack_children.children.append(data['enc'])
else:
if jack_status.enc_status[track[NUM]]:
jack_status.enc_cache[track[NUM]] = jack_status.enc_status[track[NUM]]
jack_status.enc_stat_upd(track[NUM], "[...]")
jack_status.dae_stat_upd(track[NUM], ":DAE: waiting for status report...")
if cf['_rip_from_device']:
jack_children.children.append(jack_workers.start_new_ripper(track, cf['_ripper']))
elif cf['_image_file']:
jack_children.children.append(jack_workers.ripread(track, track1_offset))
else:
jack_status.dae_stat_upd(track[NUM], ":?AE: don't know how to rip this!")
# start new encoder subprocess
if enc_queue and enc_running < cf['_encoders']:
if jack_functions.tracksize(enc_queue[0])[ENC] <= space + space_waiting:
waiting_space = 0
actual_load = jack_misc.loadavg()
if actual_load < cf['_max_load']:
waiting_load = 0
enc_running = enc_running + 1
track = enc_queue[0]
enc_queue = enc_queue[1:]
jack_status.enc_stat_upd(track[NUM], "waiting for encoder...")
jack_children.children.append(jack_workers.start_new_encoder(track, cf['_encoder']))
if first_encoder:
first_encoder = 0
global_start = time.time()
else:
waiting_load = 1
# check for subprocess output
readfd=[sys.stdin.fileno()]
for i in jack_children.children:
readfd.append(i['fd'])
try:
rfd, wfd, xfd = select.select(readfd, [], [], cf['_update_interval'])
except:
rfd, wfd, xfd = [], [], []
jack_term.tmod.sig_winch_handler(None, None)
# check for keyboard commands
if sys.stdin.fileno() in rfd:
last_update = last_update - cf['_update_interval']
cmd = jack_term.tmod.getkey()
sys.stdin.flush()
if string.upper(cmd) == "Q":
jack_display.exit()
elif not pause and string.upper(cmd) == "P":
pause = 1
flags = flags[:1] + "P" + flags[2:]
elif string.upper(cmd) == "C" or pause and string.upper(cmd) == "P":
pause = 0
flags = flags[:1] + " " + flags[2:]
elif not flags[3] == "e" and string.upper(cmd) == "E":
for i in jack_children.children:
if i['type'] == "encoder":
os.kill(i['pid'], signal.SIGSTOP)
flags = flags[:3] + "e" + flags[4:]
elif flags[3] == "e" and string.upper(cmd) == "E":
for i in jack_children.children:
if i['type'] == "encoder":
os.kill(i['pid'], signal.SIGCONT)
flags = flags[:3] + " " + flags[4:]
elif not flags[2] == "r" and string.upper(cmd) == "R":
for i in jack_children.children:
if i['type'] == "ripper":
os.kill(i['pid'], signal.SIGSTOP)
flags = flags[:2] + "r" + flags[3:]
elif flags[2] == "r" and string.upper(cmd) == "R":
for i in jack_children.children:
if i['type'] == "ripper":
os.kill(i['pid'], signal.SIGCONT)
flags = flags[:2] + " " + flags[3:]
elif string.upper(cmd) == "U":
cycles = 29 # do periodic stuff _now_
else:
jack_term.tmod.move_pad(cmd)
if cmd == 'KEY_RESIZE':
continue
last_update = time.time()
# read from file with activity
for i in jack_children.children:
if i['fd'] in rfd:
if os.uname()[0] == "Linux" and i['type'] != "image_reader":
try:
x = i['file'].read()
except IOError:
pass
else:
read_chars = 0
x = ""
while read_chars < jack_helpers.helpers[i['prog']]['status_blocksize']:
try:
xchar = i['file'].read(1)
except IOError:
break
x = x + xchar
read_chars = read_chars + 1
try:
rfd2, wfd2, xfd2 = select.select([i['fd']], [], [], 0.0)
except:
rfd2, wfd2, xfd2 = [], [], []
jack_term.tmod.sig_winch_handler(None, None)
if i['fd'] not in rfd2:
break
# put read data into child's buffer
i['buf'] = i['buf'] + x
if jack_helpers.helpers[i['prog']].has_key('filters'):
for fil in jack_helpers.helpers[i['prog']]['filters']:
i['buf'] = fil[0].sub(fil[1], i['buf'])
i['buf'] = i['buf'][-jack_helpers.helpers[i['prog']]['status_blocksize']:]
# check for exiting child processes
if jack_children.children:
respid, res = os.waitpid(-1, os.WNOHANG)
if respid != 0:
last_update = last_update - cf['_update_interval'] # ensure info is printed
new_ch = []
exited_proc = []
for i in jack_children.children:
if i['pid'] == respid:
if exited_proc != []:
error("pid " + `respid` + " found at multiple child processes")
exited_proc = i
else:
new_ch.append(i)
if not exited_proc:
error("unknown process (" + `respid` + ") has exited")
jack_children.children = new_ch
x = ""
try:
x = exited_proc['file'].read()
except IOError:
pass
except ValueError:
pass
exited_proc['buf'] = (exited_proc['buf'] + x)[-jack_helpers.helpers[exited_proc['prog']]['status_blocksize']:]
exited_proc['file'].close()
global_error = global_error + res
track = exited_proc['track']
num = track[NUM]
stop_time = time.time()
speed = ( track[LEN] / float(CDDA_BLOCKS_PER_SECOND)) / ( stop_time - exited_proc['start_time'] )
if exited_proc['type'] in ("ripper", "image_reader"):
dae_running = dae_running - 1
if cf['_exec_when_done'] and exited_proc['type'] == "ripper" and dae_running == 0 and len(dae_queue) == 0:
os.system(cf['_exec_rip_done'])
if not res:
if not exited_proc['otf']:
if os.path.exists(track[NAME] + ".wav"):
if jack_functions.tracksize(track)[WAV] != jack_utils.filesize(track[NAME] + ".wav"):
res = 242
jack_status.dae_stat_upd(num, string.strip(string.split(exited_proc['buf'], "\n")[-2]))
else:
jack_status.dae_stat_upd(num, string.strip(string.split(exited_proc['buf'], "\n")[-2]))
res = 243
global_error = global_error + res
if res and not cf['_sloppy']:
if os.path.exists(track[NAME] + ".wav"):
os.remove(track[NAME] + ".wav")
space = space + jack_functions.tracksize(track)[WAV]
if cf['_otf']:
os.kill(exited_proc['otf-pid'], signal.SIGTERM)
if os.path.exists(track[NAME] + ext):
os.remove(track[NAME] + ext)
space = space + jack_functions.tracksize(track)[ENC]
if not cf['_otf'] and not cf['_only_dae'] and track not in jack_encstuff.mp3s_ready:
space = space + jack_functions.tracksize(track)[ENC]
jack_status.dae_stat_upd(num, 'DAE failed with status ' + `res` + ", wav removed.")
else:
if exited_proc['type'] == "image_reader":
jack_status.dae_stat_upd(num, string.strip(string.split(exited_proc['buf'], "\n")[-2]))
else:
if exited_proc['otf'] and jack_helpers.helpers[exited_proc['prog']].has_key('otf-final_status_fkt'):
exec(jack_helpers.helpers[exited_proc['prog']]['otf-final_status_fkt']) in globals(), locals()
else:
last_status = None # (only used in cdparanoia)
exec(jack_helpers.helpers[exited_proc['prog']]['final_status_fkt']) in globals(), locals()
jack_status.dae_stat_upd(num, final_status)
if jack_status.enc_cache[num]:
jack_status.enc_stat_upd(num, jack_status.enc_cache[num])
jack_status.enc_cache[num] = ""
jack_functions.progress(num, "dae", jack_status.dae_status[num])
if not cf['_otf'] and not cf['_only_dae'] and track not in jack_encstuff.mp3s_ready:
if waiting_space:
mp3s_todo.append(track)
space = space + jack_functions.tracksize(track)[ENC]
else:
jack_status.enc_stat_upd(num, 'waiting for encoder.')
enc_queue.append(track)
space_waiting = space_waiting - jack_functions.tracksize(track)[WAV]
elif exited_proc['type'] == "encoder":
enc_running = enc_running - 1
# completed vbr files shouldn't be to small, but this still
# caused confusion so again, vbr is an exception:
if not cf['_vbr'] and not res and jack_functions.tracksize(track)[ENC] * 0.99 > jack_utils.filesize(track[NAME] + ext):
res = 242
global_error = global_error + res
if res:
global_blocks = global_blocks - exited_proc['track'][LEN]
global_start = global_start + exited_proc['elapsed'] / (enc_running + 1)
if global_start > time.time():
global_start = time.time()
if os.path.exists(track[NAME] + ext):
# mp3enc doesn't report errors when out of disk space...
os.remove(track[NAME] + ext)
space = space + jack_functions.tracksize(track)[ENC]
jack_status.enc_stat_upd(num, 'coding failed, err#' + `res`)
else:
global_done = global_done + exited_proc['track'][LEN]
if cf['_vbr']:
jack_status.enc_stat_upd(num, "[coding @" + '%s' % jack_functions.pprint_speed(speed) + "x done, %03.0fkbit]" % ((jack_utils.filesize(track[NAME] + ext) * 0.008) / (track[LEN] / 75.0)))
else:
jack_status.enc_stat_upd(num, "[coding @" + '%s' % jack_functions.pprint_speed(speed) + "x done, mp3 OK]")
if not cf['_otf'] and not cf['_keep_wavs']:
os.remove(track[NAME] + ".wav")
space = space + jack_functions.tracksize(track)[WAV]
jack_functions.progress(num, "enc", `track[RATE]`, jack_status.enc_status[num])
else:
error("child process of unknown type (" + exited_proc['type'] + ") exited")
if global_error:
jack_display.smile = " :-["
if last_update + cf['_update_interval'] <= time.time():
last_update = time.time()
# interpret subprocess output
for i in jack_children.children:
if i['type'] == "ripper":
if len(i['buf']) == jack_helpers.helpers[i['prog']]['status_blocksize']:
if i['otf'] and jack_helpers.helpers[i['prog']].has_key('otf-status_fkt'):
exec(jack_helpers.helpers[i['prog']]['otf-status_fkt']) in globals(), locals()
else:
exec(jack_helpers.helpers[i['prog']]['status_fkt']) in globals(), locals()
if new_status:
jack_status.dae_stat_upd(i['track'][NUM], ":DAE: " + new_status)
elif i['type'] == "encoder":
if len(i['buf']) == jack_helpers.helpers[i['prog']]['status_blocksize']:
tmp_d = {'i': i.copy(), 'percent': 0}
try:
exec(jack_helpers.helpers[i['prog']]['percent_fkt']) in globals(), tmp_d
except:
tmp_d['percent'] = 0
debug("error in percent_fkt of %s." % `i`)
i['percent'] = tmp_d['percent']
if i['percent'] > 0:
i['elapsed'] = time.time() - i['start_time']
speed = ((i['track'][LEN] / float(CDDA_BLOCKS_PER_SECOND)) * ( i['percent'] / 100 )) / i['elapsed']
eta = (100 - i['percent']) * i['elapsed'] / i['percent']
eta_ms = "%02i:%02i" % (eta / 60, eta % 60)
jack_status.enc_stat_upd(i['track'][NUM], '%2i%% done, ETA:%6s, %sx' % (i['percent'], eta_ms, jack_functions.pprint_speed(speed)))
#jack_term.tmod.dae_stat_upd(i['track'][NUM], None, i['percent'])
elif i['type'] == "image_reader":
line = string.split(i['buf'], "\n")
if len(line) >= 2:
line = string.strip(line[-2])
jack_status.dae_stat_upd(i['track'][NUM], line)
if line[:5] == "Error":
global_error = global_error + 1
else:
error("unknown subprocess type \"" + i['type'] + "\".")
cycles = cycles + 1
if cycles % 30 == 0:
if cf['_recheck_space'] and not cf['space_from_argv']['history'][-1][0] == "argv":
actual_space = jack_functions.df()
if space_adjust:
diff = actual_space - space
if diff > space_adjust:
space = space + space_adjust
space_adjust = 0
waiting_space = 0
else:
space = space + diff
space_adjust = space_adjust - diff
else:
if actual_space < space:
space_adjust = space - actual_space
space = actual_space
if space_adjust and enc_running == 0 and dae_running == 0:
waiting_space = waiting_space + 1
if not waiting_space >= 2 and not waiting_load and enc_running == 0 and dae_running == 0:
blocked = blocked + 1
else:
blocked = 0
total_done = global_done
for i in jack_children.children:
total_done = total_done + (i['percent'] / 100) * i['track'][LEN]
elapsed = time.time() - global_start
if global_blocks > 0:
percent = total_done / global_blocks
else:
percent = 0
if percent > 0 and elapsed > 40:
eta = ((1 - percent) * elapsed / percent)
eta_hms = " ETA=%i:%02i:%02i" % (eta / 3600, (eta % 3600) / 60, eta % 60)
else:
eta_hms = ""
if string.strip(flags[1:-1]):
print_flags = " " + flags
else:
print_flags = ""
if dae_running:
rot = rotate_ball[rot_count % rot_ball_cycle]
else:
rot = rotate[rot_count % rot_cycle]
rot_count = rot_count + 1
# print status
if blocked > 2:
jack_display.special_line = " ...I feel blocked - quit with 'q' if you get bored... "
if blocked > 5:
space = jack_functions.df() - cf['_keep_free']
elif waiting_load and waiting_space >= 2:
jack_display.special_line = " ...waiting for load (%.2f)" % actual_load + ") < %.2f" % cf['_max_load'] + " and for " + jack_functions.pprint_i(space_adjust, "%i %sBytes") + " to be freed... "
elif waiting_space >= 2:
jack_display.special_line = " ...waiting for " + jack_functions.pprint_i(space_adjust, "%i %sBytes") + " to be freed.... "
elif waiting_load:
jack_display.special_line = " ...waiting for load (%.2f) to drop below %.2f..." % (actual_load, cf['_max_load'])
else:
jack_display.special_line = None
jack_display.bottom_line = "(" + rot + ") " \
+ "SPACE:" * (space_adjust != 0) \
+ "space:" * (space_adjust == 0) \
+ jack_functions.pprint_i(space, "%i%sB") \
+ (" waiting_WAVs:%02i" % len(enc_queue)) \
+ " DAE:" + `cf['_rippers'] - dae_running` + "+" + `dae_running` \
+ " ENC:" + `cf['_encoders'] - enc_running` + "+" + `enc_running` \
+ eta_hms \
+ " errors: " + `global_error` \
+ jack_display.smile + print_flags
jack_term.tmod.update(jack_display.special_line, jack_display.bottom_line)
return global_error
# end of main loop #########################################################
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