0006730: Plugin analysis for VST doesn't report sample rate - MantisBT

ID	Project	Category	View Status	Date Submitted	Last Update

0006730	ardour	bugs	public	2016-01-11 16:41	2016-01-11 16:41

Reporter	SadKo	Assigned To
Priority	normal	Severity	major	Reproducibility	always
Status	new	Resolution	open
Platform	Linux	OS	openSUSE	OS Version	13.2
Product Version	4.4

Summary	0006730: Plugin analysis for VST doesn't report sample rate
Description	Ardour doesn't send effSetSampleRate event to the dispatcher function of the plugin when pressing 'Plugin analysis' button in the generic editor of the plugin.
Steps To Reproduce	1. Add VST plugin to mixer stripe, Ardour reports sample rate by passing effSetSampleRate event to the dispatcher function. 2. Open the generic editor, all works fine. 3. Press 'Plugin analysis'. Ardour instantiates new plugin but does not report sample rate to the plugin. For my plugin, that requires sample rate, it's the crash because no buffers are allocated.
Additional Information	Here is the backlog. * The plugin was added to the mixer stripe: * T[/home/sadko/eclipse/lsp-plugins/include/container/vst/main.h: 146] VSTPluginMain: Getting factory lookup_factory: Trying shared library /usr/local/lib/vst/lsp-plugins-vst-core.so T[vst.cpp: 639] vst_instantiate: Instantiated plugin Verzögerungsausgleicher Stereo - Delay Compensator Stereo T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=0 (effOpen), index=0, value=0, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=58 (effGetVstVersion), index=0, value=0, ptr=(nil), opt = 0,000 T[vst.cpp: 322] vst_dispatcher: vst_version = 2400 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=10 (effSetSampleRate), index=0, value=0, ptr=(nil), opt = 48000,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=11 (effSetBlockSize), index=0, value=200, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=56 (effGetParameterProperties), index=0, value=0, ptr=0x7fff91b93220, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=8 (effGetParamName), index=0, value=0, ptr=0x7fff91b931e0, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=56 (effGetParameterProperties), index=1, value=0, ptr=0x7fff91b93220, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=8 (effGetParamName), index=1, value=0, ptr=0x7fff91b931e0, opt = 0,000 ... * The generic UI has been opened: * T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=58 (effGetVstVersion), index=0, value=0, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=8 (effGetParamName), index=0, value=0, ptr=0x7fff91b92cc0, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=8 (effGetParamName), index=0, value=0, ptr=0x7fff91b92cc0, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=56 (effGetParameterProperties), index=0, value=0, ptr=0x7fff91b92c20, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=8 (effGetParamName), index=1, value=0, ptr=0x7fff91b92cc0, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=8 (effGetParamName), index=1, value=0, ptr=0x7fff91b92cc0, opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x2883d20, opcode=56 (effGetParameterProperties), index=1, value=0, ptr=0x7fff91b92c20, opt = 0,000 ... * The 'Plugin analysis' was pressed * T[/home/sadko/eclipse/lsp-plugins/include/container/vst/main.h: 146] VSTPluginMain: Getting factory T[vst.cpp: 639] vst_instantiate: Instantiated plugin Verzögerungsausgleicher Stereo - Delay Compensator Stereo T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x5a74230, opcode=0 (effOpen), index=0, value=0, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x5a74230, opcode=58 (effGetVstVersion), index=0, value=0, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x5a74230, opcode=12 (effMainsChanged), index=0, value=1, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x5a74230, opcode=12 (effMainsChanged), index=0, value=0, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x5a74230, opcode=11 (effSetBlockSize), index=0, value=1000, ptr=(nil), opt = 0,000 T[vst.cpp: 309] vst_dispatcher: vst_dispatcher effect=0x5a74230, opcode=12 (effMainsChanged), index=0, value=1, ptr=(nil), opt = 0,000 < SEGMENTATION FAULT > Because there was no effSetSampleRate reported, the plugin didn't allocate buffers for delay line, so it died while trying to dereference null pointer.
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Date Modified	Username	Field	Change
2016-01-11 16:41	SadKo	New Issue