View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000229 | ardour | bugs | public | 2004-01-22 19:25 | 2004-05-05 16:22 |
| Reporter | Bugtrap | Assigned To | paul | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Summary | 0000229: Looping not possible with VST plugins | ||||
| Description | When setting a loop and playing that loop with an active VST plugin, ardour will just continue past to run past the loop end point without ever stopping again. Don't know, whether this is a ardour bug or a vstserver bug. But with Muse looping with VST plugins works... | ||||
| Additional Information | beta9.1 | ||||
| Tags | No tags attached. | ||||
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The vst plugin (through ladspavst) receives an "delete" event, which should only occur when the cleanup routine of the ladspa plugin is called. Is ardour calling the cleanup routine at the end of the loop ??? |
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ardour does not send any such event to a LADSPA plugin. it does send activate and deactivate requests, which are completely legal. they are not equivalent to "delete" and if ladspavst treats them that way, it is in error. |
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Further investigation revealed, that when looping ardour produces one cycle, where a samplecount of zero is used. E.g. with 0x400 as jack cycle length, it produses something like 0x400 0x400 0x280 0x180 0x000 <- !!! 0x400 0x400 as cycle length when wrapping around the loop end. VST plugs apparently always assume a cyclelength of >0, so the 0 is interpreted as 0x100000000, which causes the problem. Is there a need for this zero cycle in ardour ? Else remove it. |
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Sending a samplecount of 0 is actually the vstservers way of knowing when to quit. Is that stupid? Should I fix the vstserver? |
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does the ladspavst plugin have a "latency" port? if so, a sample count of zero is used for a call to "run" so that the plugin can report current latency values when the transport stops. let me know. |
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Ladspavst does not have a latency-port. But its very easy to make it ignore calls to run with SampleCount 0. So I guess its better to fix ladspavst rather than making an exception in ardour. I'll fix ladspavst. |
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kjetil was willing to fix ladspavst. meanwhile,we have native support for VST plugins. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2004-01-22 19:25 | Bugtrap | New Issue | |
| 2004-02-16 21:23 | Bugtrap | Note Added: 0000442 | |
| 2004-02-16 22:53 | paul | Note Added: 0000443 | |
| 2004-02-21 12:53 | Bugtrap | Note Added: 0000457 | |
| 2004-03-09 21:01 | kjetil | Note Added: 0000510 | |
| 2004-03-10 04:37 | paul | Note Added: 0000519 | |
| 2004-03-10 12:02 | kjetil | Note Added: 0000525 | |
| 2004-04-14 04:14 | paul | Status | new => resolved |
| 2004-04-14 04:14 | paul | Resolution | open => fixed |
| 2004-04-14 04:14 | paul | Assigned To | => paul |
| 2004-04-14 04:14 | paul | Note Added: 0000621 | |
| 2004-05-05 16:22 | Bugtrap | Status | resolved => closed |
