Next VST spec & render time quality ?

DSP, Plugin and Host development discussion.
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aciddose wrote:can you post the output file for wavelab? it would help by showing what causes the crash to happen.
It didn't output one. It crashes when I select it on the plugin list.
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aciddose wrote:when i keep saying "offline" i mean when rendering a file from the plugin rather than sending the output to a audio output device. you know like when you do export->audio.

the "offline" processing functions in vst are for effects like you see in wave editors.
I did realise this. I was simply wondering why processlevel "isn't supported" by SX3. I thought maybe they force the offline API for correct functionality and host-plugin communication during rendering..
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http://xhip.cjb.net/temp/hosttester.dll

it shouldnt crash now. i gave it inputs, outputs, a program and a parameter. it copies the inputs to the outputs and calls getprocesslevel inside the process functions. i changed it to only report on getprocesslevel if the process level changes.

tell me what this tells you... if cubase doesnt respond with a nonzero value either i'm doing something very wrong or cubase doesnt even support a basic vst feature.
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Looking a whole lot better.

seems it needs to get called under process.

wavelab playback, and one render:
opcode effSetSampleRate (10) index 0 value 0 ptr 0 opt 44100.000000
opcode effSetBlockSize (11) index 0 value 2048 ptr 0 opt 0.000000
opcode effOpen (0) index 0 value 0 ptr 0 opt 0.000000
opcode effSetBlockSize (11) index 0 value 2048 ptr 0 opt 0.000000
opcode effGetProgramName (5) index 0 value 0 ptr 46747312 opt 0.000000
opcode effSetSpeakerArrangement (42) index 0 value 50656376 ptr 50657280 opt 0.000000
opcode effSetSampleRate (10) index 0 value 0 ptr 0 opt 44100.000000
opcode effGetParamName (8) index 0 value 0 ptr 50657616 opt 0.000000
opcode effGetParamLabel (6) index 0 value 0 ptr 50657616 opt 0.000000
opcode effSetProgramName (4) index 0 value 0 ptr 46748960 opt 0.000000
opcode effGetParamDisplay (7) index 0 value 0 ptr 46748109 opt 0.000000
opcode effGetProgram (3) index 0 value 0 ptr 0 opt 0.000000
opcode effGetProgramName (5) index 0 value 0 ptr 55770160 opt 0.000000
opcode effGetParamDisplay (7) index 0 value 0 ptr 46748109 opt 0.000000
opcode effGetProgram (3) index 0 value 0 ptr 0 opt 0.000000
opcode effGetProgramName (5) index 0 value 0 ptr 55770180 opt 0.000000
opcode effMainsChanged (12) index 0 value 1 ptr 0 opt 0.000000
getCurrentProcessLevel() inside resume() - returned [0]
getCurrentProcessLevel() inside process() - returned [0]
opcode effMainsChanged (12) index 0 value 0 ptr 0 opt 0.000000
opcode effGetProgramName (5) index 0 value 0 ptr 46785776 opt 0.000000
opcode effGetProgramName (5) index 0 value 0 ptr 46747312 opt 0.000000
opcode effClose (1) index 0 value 0 ptr 0 opt 0.000000
SX3 idle, playback and one render:
opcode effIdentify (22) index 0 value 0 ptr 0 opt 0.000000
opcode effGetPlugCategory (35) index 0 value 0 ptr 0 opt 0.000000
opcode effSetSampleRate (10) index 0 value 0 ptr 0 opt 44100.000000
opcode effSetBlockSize (11) index 0 value 2048 ptr 0 opt 0.000000
opcode effOpen (0) index 0 value 0 ptr 0 opt 0.000000
opcode effCanDo (51) index 0 value 0 ptr "bypass" opt 0.000000
opcode effSetPanLaw (74) index 0 value 1 ptr 0 opt 1.000000
opcode effGetProgram (3) index 0 value 0 ptr 0 opt 0.000000
opcode effGetVstVersion (58) index 0 value 0 ptr 0 opt 0.000000
opcode effGetProgramNameIndexed (29) index 0 value -1 ptr 1242084 opt 0.000000
opcode effGetProgramName (5) index 0 value 0 ptr 1242064 opt 0.000000
opcode effGetProgram (3) index 0 value 0 ptr 0 opt 0.000000
opcode effCanDo (51) index 0 value 0 ptr "midiProgramNames" opt 0.000000
opcode effMainsChanged (12) index 0 value 1 ptr 0 opt 0.000000
getCurrentProcessLevel() inside resume() - returned [0]
opcode effCanDo (51) index 0 value 0 ptr "sendVstMidiEvent" opt 0.000000
opcode effMainsChanged (12) index 0 value 0 ptr 0 opt 0.000000
opcode effGetParamName (8) index 0 value 0 ptr 1242232 opt 0.000000
opcode effGetParameterProperties (56) index 0 value 0 ptr 1242388 opt 0.000000
opcode effGetVstVersion (58) index 0 value 0 ptr 0 opt 0.000000
opcode effSetSpeakerArrangement (42) index 0 value 232005888 ptr 232006128 opt 0.000000
opcode effMainsChanged (12) index 0 value 1 ptr 0 opt 0.000000
opcode effCanDo (51) index 0 value 0 ptr "sendVstMidiEvent" opt 0.000000
opcode effCanDo (51) index 0 value 0 ptr "LiveWithoutToolbar" opt 0.000000
opcode effString2Parameter (27) index 0 value 0 ptr 0 opt 0.000000
opcode effGetParamDisplay (7) index 0 value 0 ptr 1241304 opt 0.000000
opcode effGetParamName (8) index 0 value 0 ptr 1241444 opt 0.000000
opcode effGetParamLabel (6) index 0 value 0 ptr 1241444 opt 0.000000
opcode effGetParamDisplay (7) index 0 value 0 ptr 1240972 opt 0.000000
opcode effStartProcess (71) index 0 value 0 ptr 0 opt 0.000000
getCurrentProcessLevel() inside process() - returned [0]
opcode effStopProcess (72) index 0 value 0 ptr 0 opt 0.000000
opcode effStartProcess (71) index 0 value 0 ptr 0 opt 0.000000
getCurrentProcessLevel() inside process() - returned [4]
opcode effStopProcess (72) index 0 value 0 ptr 0 opt 0.000000
opcode effStartProcess (71) index 0 value 0 ptr 0 opt 0.000000
getCurrentProcessLevel() inside process() - returned [0]
opcode effStopProcess (72) index 0 value 0 ptr 0 opt 0.000000
opcode effClose (1) index 0 value 0 ptr 0 opt 0.000000
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so wavelab does not support it, and cubase only returns 4 while rendering a file, and it doesnt return other values like it should..

0 = not supported

i wonder what would be returned from inside an idle() call.

i guess it is pretty useless other than for simply calling from inside process() to see if it is being called with the intention of rendering a file or not.. i mean if you're already in process() it means the host is in the process thread.. if you're in editor->idle, it means you're in the gui thread. if you're in idle().. it means?.. well, it probably doesnt matter much anyway.

atleast it works to show which hosts support processclass 4.

i notice this:

Code: Select all

opcode effSetSampleRate (10) index 0 value 0 ptr 0 opt 44100.000000
opcode effSetBlockSize (11) index 0 value 2048 ptr 0 opt 0.000000
opcode effOpen (0) index 0 value 0 ptr 0 opt 0.000000
perhaps calling in that order is better. i'd really like to see what a lot more hosts do.
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aciddose wrote:so wavelab does not support it, and cubase only returns 4 while rendering a file, and it doesnt return other values like it should..

0 = not supported

i wonder what would be returned from inside an idle() call.
Yeah, stupidly enough wavelab doesn't seem to support it. It's *especially* stupid since everything gets committed in wavelab using the 'render' button.

I think only modes 0 and 4 are significant, and that's why we don't see the other modes used anywhere. Looking at the list the rest of the modes seem quite obsolete.
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actually, i think they may be more important on mac.

this is the problem with vst, there is no good documentation anywhere about this stuff. :/
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indeed. the lack of standardisation is appalling. One can easily blame most of the host vs. plugin related compatibility problems on that.

Keep the developers guessing, eh, Steinberg?
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hmm, maybe i'm not 100% sure what this thread is sbout, but the steinberg reverb plugin roomworks for nuendo has got a nice button that says "export", it makes the plug automatically switch to "0% efficiency" (how much CPU the plug is eating) during export... so that you can use an efficient but not-so-good-sounding reverb when working, but still get full reverb quality when rendering without having to do anything but making sure the export button is toggled :)
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