Hi Georg, hi list,
Georg Werner wrote:
FYI, your patch works with -nogui and winxp even without the [switch~]. Pd version 0.41.4-extended-20090509
Thank you so much for this revealing contribution. I can indeed confirm that Windows XP seems to be free from the -nogui audio initialisation problems described earlier, including also the "[loadbang]->[;pd dsp 1(" problem.
This is reflected in the attached example "nogui_win.pd", which works for me with (and without) the -nogui flag under Windows XP, both with Pd extended 0.41.4 and Pd vanilla 0.42-5. Under Debian, however, it works only when *not* using -nogui, both with Pd vanilla 0.41.4 and vanilla 0.42-5.
but if i understand correctly you would have to turn off [switch~] by a loadbang and turn it on with a delay.
Thanks for pointing this out, but I cannot confirm this workaround to work under Debian. This is reflected in the attached example "nogui_linux.pd", which keeps failing to initialize audio correctly with Debian and -nogui (but plays fine under Windows XP and -nogui).
best, flo.H
#N canvas 176 88 564 588 10; #X obj 140 381 dac~; #X obj 147 140 loadbang; #X obj 140 175 metro 1000; #X obj -23 386 loadbang; #X obj -23 413 del 1000; #X obj 61 173 osc~ 220; #X obj 69 273 *~; #X msg 88 222 1 , 0 100; #X obj 88 247 line~; #X text 235 368 Florian Hollerweger , 2010; #X obj 140 352 *~; #X obj 213 316 dbtorms; #X obj 213 268 loadbang; #X msg 213 292 80; #X obj 170 242 delread~ line 350; #X obj -5 354 delwrite~ line 580; #X text 257 294 Master volume; #X obj 169 354 *~; #X msg 172 215 500; #X obj 63 499 switch~; #X text 45 408 <- HACK: [del 1000] also required due to audio initialization problems with -nogui; #X obj 63 448 loadbang; #X msg 63 475 0; #X obj 101 473 r switch; #X msg -23 441 ; pd dsp 1 ; switch 1; #X text -19 -41 -nogui bug: This patch creates a test signal on the left channel once a second , which is delayed through [delwrite~] and [delread~] and then repeated on the right channel 500ms later. -nogui bug: This patch creates a test signal on the left channel once a second , which is delayed through [delwrite~] and [delread~] and then repeated on the right channel 500ms later. The [switch~] object is supposed to serve as a workaround for the audio initialization problems with Pd (both vanilla 0.41.4 and vanilla 0.42-5) demonstrate at least under Debian GNU/Linux when started with the -nogui flag. However , the patch keeps failing for me under Debian and with -nogui , although it works fine under Windows XP and -nogui.; #X text 121 495 <- This does not seem to solve the -nogui audio init problems either (also not if the order of turning on dsp and switch is reversed in the message box on the left).; #X connect 1 0 2 0; #X connect 1 0 18 0; #X connect 2 0 7 0; #X connect 3 0 4 0; #X connect 4 0 24 0; #X connect 5 0 6 0; #X connect 6 0 15 0; #X connect 6 0 10 0; #X connect 7 0 8 0; #X connect 8 0 6 1; #X connect 10 0 0 0; #X connect 11 0 10 1; #X connect 11 0 17 1; #X connect 12 0 13 0; #X connect 13 0 11 0; #X connect 14 0 17 0; #X connect 17 0 0 1; #X connect 18 0 14 0; #X connect 21 0 22 0; #X connect 22 0 19 0; #X connect 23 0 19 0;
#N canvas 595 75 450 478 10; #X obj 140 381 dac~; #X obj 147 140 loadbang; #X obj 140 175 metro 1000; #X obj -23 386 loadbang; #X obj 61 173 osc~ 220; #X obj 69 273 *~; #X msg 88 222 1 , 0 100; #X obj 88 247 line~; #X text 235 368 Florian Hollerweger , 2010; #X obj 140 352 *~; #X obj 213 316 dbtorms; #X obj 213 268 loadbang; #X msg 213 292 80; #X obj 170 242 delread~ line 350; #X obj -5 354 delwrite~ line 580; #X text 257 294 Master volume; #X obj 169 354 *~; #X msg 172 215 500; #X msg -23 410 ; pd dsp 1; #X text -10 8 -nogui bug: This patch creates a test signal on the left channel once a second , which is delayed through [delwrite~] and [delread~] and then repeated on the right channel 500ms later. Under Debian (and Pd vanilla 0.41.4 or vanilla 0.42-5) , when started with -nogui , the delay line is initialized before the samplerate is set , resulting in broken audio output. Under Windows XP (and Pd vanilla 0.42-5 or extended 0.41.4) , the patch works fine with -nogui as well.; #X connect 1 0 2 0; #X connect 1 0 17 0; #X connect 2 0 6 0; #X connect 3 0 18 0; #X connect 4 0 5 0; #X connect 5 0 14 0; #X connect 5 0 9 0; #X connect 6 0 7 0; #X connect 7 0 5 1; #X connect 9 0 0 0; #X connect 10 0 9 1; #X connect 10 0 16 1; #X connect 11 0 12 0; #X connect 12 0 10 0; #X connect 13 0 16 0; #X connect 16 0 0 1; #X connect 17 0 13 0;