File: jack_main_loop.py

package info (click to toggle)
jack 3.1.1+cvs20050801-31
  • links: PTS
  • area: main
  • in suites: bullseye, buster, sid
  • size: 4,316 kB
  • sloc: python: 6,358; ansic: 1,910; makefile: 6; sh: 5
file content (485 lines) | stat: -rwxr-xr-x 25,239 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
# -*- 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:
        orig_space = space
                            # 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, ValueError):
                        pass
                else:
                    read_chars = 0
                    x = ""
                    while read_chars < jack_helpers.helpers[i['prog']]['status_blocksize']:
                        try:
                            xchar = i['file'].read(1)
                        except (IOError, ValueError):
                            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, 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, jack_status.get_2_line(exited_proc['buf']))
                            else:
                                jack_status.dae_stat_upd(num, jack_status.get_2_line(exited_proc['buf']))
                                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, jack_status.get_2_line(exited_proc['buf']))
                        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']:
                            rate = int((jack_utils.filesize(track[NAME] + ext) * 0.008) / (track[LEN] / 75.0))
                        else:
                            rate = track[RATE]
                        jack_status.enc_stat_upd(num, "[coding @" + '%s' % jack_functions.pprint_speed(speed) + "x done, %dkbit" % rate)
                        jack_functions.progress(num, "enc", `rate`, jack_status.enc_status[num])
                        if not cf['_otf'] and not cf['_keep_wavs']:
                            os.remove(track[NAME] + ".wav")
                            space = space + jack_functions.tracksize(track)[WAV]

                else:
                    error("child process of unknown type (" + exited_proc['type'] + ") exited")
                if global_error:
                    jack_display.smile = " :-["

        space_adjust += orig_space-space

        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:
                            try:
                                jack_status.dae_stat_upd(i['track'][NUM], ":DAE: " + new_status)
                            except:
                                debug("error in dae_stat_upd")
        
                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.strip(jack_status.get_2_line(i['buf'], default=""))
                    if line:
                        jack_status.dae_stat_upd(i['track'][NUM], line)
                        if line.startswith("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 #########################################################