rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 315 insertions, 0 deletions

diff --git a/libs/ardour/session_vst.cc b/libs/ardour/session_vst.cc
new file mode 100644
index 0000000000..16233feba2
--- /dev/null
+++ b/libs/ardour/session_vst.cc
@@ -0,0 +1,315 @@
+/*
+    Copyright (C) 2004
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <stdbool.h>
+#include <cstdio>
+
+#include <fst.h>
+#include <vst/aeffectx.h>
+
+#include <ardour/session.h>
+#include <ardour/vst_plugin.h>
+
+#include "i18n.h"
+
+// #define DEBUG_CALLBACKS
+
+#ifdef DEBUG_CALLBACKS
+#define SHOW_CALLBACK printf
+#else
+#define SHOW_CALLBACK(...)
+#endif
+
+using namespace ARDOUR;
+
+long Session::vst_callback (AEffect* effect,
+			    long opcode,
+			    long index,
+			    long value,
+			    void* ptr,
+			    float opt)
+{
+	static VstTimeInfo _timeInfo;
+	VSTPlugin* plug;
+	Session* session;
+
+	SHOW_CALLBACK ("am callback, opcode = %d", opcode);
+	
+	if (effect && effect->user) {
+		plug = static_cast<VSTPlugin*> (effect->user);
+		session = &plug->session();
+	} else {
+		plug = 0;
+		session = 0;
+	}
+
+	switch(opcode){
+
+	case audioMasterAutomate:
+		SHOW_CALLBACK ("amc: audioMasterAutomate\n");
+		// index, value, returns 0
+		if (effect) {
+			effect->setParameter (effect, index, opt);
+		}
+		return 0;
+
+	case audioMasterVersion:
+		SHOW_CALLBACK ("amc: audioMasterVersion\n");
+		// vst version, currently 2 (0 for older)
+		return 2;
+
+	case audioMasterCurrentId:	
+		SHOW_CALLBACK ("amc: audioMasterCurrentId\n");
+		// returns the unique id of a plug that's currently
+		// loading
+		return 0;
+		
+	case audioMasterIdle:
+		SHOW_CALLBACK ("amc: audioMasterIdle\n");
+		// call application idle routine (this will
+		// call effEditIdle for all open editors too) 
+		if (effect) {
+			effect->dispatcher(effect, effEditIdle, 0, 0, NULL, 0.0f);
+		}
+		return 0;
+
+	case audioMasterPinConnected:		
+		SHOW_CALLBACK ("amc: audioMasterPinConnected\n");
+		// inquire if an input or output is beeing connected;
+		// index enumerates input or output counting from zero:
+		// value is 0 for input and != 0 otherwise. note: the
+		// return value is 0 for <true> such that older versions
+		// will always return true.
+		return 1;
+
+	case audioMasterWantMidi:
+		SHOW_CALLBACK ("amc: audioMasterWantMidi\n");
+		// <value> is a filter which is currently ignored
+		return 0;
+
+	case audioMasterGetTime:
+		SHOW_CALLBACK ("amc: audioMasterGetTime\n");
+		// returns const VstTimeInfo* (or 0 if not supported)
+		// <value> should contain a mask indicating which fields are required
+		// (see valid masks above), as some items may require extensive
+		// conversions
+		memset(&_timeInfo, 0, sizeof(_timeInfo));
+		if (session) {
+			_timeInfo.samplePos = session->transport_frame();
+			_timeInfo.sampleRate = session->frame_rate();
+		}
+		return (long)&_timeInfo;
+
+	case audioMasterProcessEvents:
+		SHOW_CALLBACK ("amc: audioMasterProcessEvents\n");
+		// VstEvents* in <ptr>
+		return 0;
+
+	case audioMasterSetTime:
+		SHOW_CALLBACK ("amc: audioMasterSetTime\n");
+		// VstTimenfo* in <ptr>, filter in <value>, not supported
+
+	case audioMasterTempoAt:
+		SHOW_CALLBACK ("amc: audioMasterTempoAt\n");
+		// returns tempo (in bpm * 10000) at sample frame location passed in <value>
+		return 0;
+
+	case audioMasterGetNumAutomatableParameters:
+		SHOW_CALLBACK ("amc: audioMasterGetNumAutomatableParameters\n");
+		return 0;
+
+	case audioMasterGetParameterQuantization:	
+		SHOW_CALLBACK ("amc: audioMasterGetParameterQuantization\n");
+               // returns the integer value for +1.0 representation,
+	       // or 1 if full single float precision is maintained
+               // in automation. parameter index in <value> (-1: all, any)
+		return 0;
+
+	case audioMasterIOChanged:
+		SHOW_CALLBACK ("amc: audioMasterIOChanged\n");
+	       // numInputs and/or numOutputs has changed
+		return 0;
+
+	case audioMasterNeedIdle:
+		SHOW_CALLBACK ("amc: audioMasterNeedIdle\n");
+	       // plug needs idle calls (outside its editor window)
+		return 0;
+
+	case audioMasterSizeWindow:
+		SHOW_CALLBACK ("amc: audioMasterSizeWindow\n");
+		// index: width, value: height
+		return 0;
+
+	case audioMasterGetSampleRate:
+		SHOW_CALLBACK ("amc: audioMasterGetSampleRate\n");
+		return 0;
+
+	case audioMasterGetBlockSize:
+		SHOW_CALLBACK ("amc: audioMasterGetBlockSize\n");
+		return 0;
+
+	case audioMasterGetInputLatency:
+		SHOW_CALLBACK ("amc: audioMasterGetInputLatency\n");
+		return 0;
+
+	case audioMasterGetOutputLatency:
+		SHOW_CALLBACK ("amc: audioMasterGetOutputLatency\n");
+		return 0;
+
+	case audioMasterGetPreviousPlug:
+		SHOW_CALLBACK ("amc: audioMasterGetPreviousPlug\n");
+	       // input pin in <value> (-1: first to come), returns cEffect*
+		return 0;
+
+	case audioMasterGetNextPlug:
+		SHOW_CALLBACK ("amc: audioMasterGetNextPlug\n");
+	       // output pin in <value> (-1: first to come), returns cEffect*
+
+	case audioMasterWillReplaceOrAccumulate:
+		SHOW_CALLBACK ("amc: audioMasterWillReplaceOrAccumulate\n");
+	       // returns: 0: not supported, 1: replace, 2: accumulate
+		return 0;
+
+	case audioMasterGetCurrentProcessLevel:
+		SHOW_CALLBACK ("amc: audioMasterGetCurrentProcessLevel\n");
+		// returns: 0: not supported,
+		// 1: currently in user thread (gui)
+		// 2: currently in audio thread (where process is called)
+		// 3: currently in 'sequencer' thread (midi, timer etc)
+		// 4: currently offline processing and thus in user thread
+		// other: not defined, but probably pre-empting user thread.
+		return 0;
+		
+	case audioMasterGetAutomationState:
+		SHOW_CALLBACK ("amc: audioMasterGetAutomationState\n");
+		// returns 0: not supported, 1: off, 2:read, 3:write, 4:read/write
+		// offline
+		return 0;
+
+	case audioMasterOfflineStart:
+		SHOW_CALLBACK ("amc: audioMasterOfflineStart\n");
+	case audioMasterOfflineRead:
+		SHOW_CALLBACK ("amc: audioMasterOfflineRead\n");
+	       // ptr points to offline structure, see below. return 0: error, 1 ok
+		return 0;
+
+	case audioMasterOfflineWrite:
+		SHOW_CALLBACK ("amc: audioMasterOfflineWrite\n");
+		// same as read
+		return 0;
+
+	case audioMasterOfflineGetCurrentPass:
+		SHOW_CALLBACK ("amc: audioMasterOfflineGetCurrentPass\n");
+	case audioMasterOfflineGetCurrentMetaPass:
+		SHOW_CALLBACK ("amc: audioMasterOfflineGetCurrentMetaPass\n");
+		return 0;
+
+	case audioMasterSetOutputSampleRate:
+		SHOW_CALLBACK ("amc: audioMasterSetOutputSampleRate\n");
+		// for variable i/o, sample rate in <opt>
+		return 0;
+
+	case audioMasterGetSpeakerArrangement:
+		SHOW_CALLBACK ("amc: audioMasterGetSpeakerArrangement\n");
+		// (long)input in <value>, output in <ptr>
+		return 0;
+
+	case audioMasterGetVendorString:
+		SHOW_CALLBACK ("amc: audioMasterGetVendorString\n");
+		// fills <ptr> with a string identifying the vendor (max 64 char)
+		strcpy ((char*) ptr, "Linux Audio Systems");
+		return 0;
+
+	case audioMasterGetProductString:
+		SHOW_CALLBACK ("amc: audioMasterGetProductString\n");
+		// fills <ptr> with a string with product name (max 64 char)
+		strcpy ((char*) ptr, "Ardour");
+		return 0;
+
+	case audioMasterGetVendorVersion:
+		SHOW_CALLBACK ("amc: audioMasterGetVendorVersion\n");
+		// returns vendor-specific version
+		return 900;
+		
+	case audioMasterVendorSpecific:
+		SHOW_CALLBACK ("amc: audioMasterVendorSpecific\n");
+		// no definition, vendor specific handling
+		return 0;
+		
+	case audioMasterSetIcon:
+		SHOW_CALLBACK ("amc: audioMasterSetIcon\n");
+		// void* in <ptr>, format not defined yet
+		return 0;
+		
+	case audioMasterCanDo:
+		SHOW_CALLBACK ("amc: audioMasterCanDo\n");
+		// string in ptr, see below
+		return 0;
+		
+	case audioMasterGetLanguage:
+		SHOW_CALLBACK ("amc: audioMasterGetLanguage\n");
+		// see enum
+		return 0;
+		
+	case audioMasterOpenWindow:
+		SHOW_CALLBACK ("amc: audioMasterOpenWindow\n");
+		// returns platform specific ptr
+		return 0;
+		
+	case audioMasterCloseWindow:
+		SHOW_CALLBACK ("amc: audioMasterCloseWindow\n");
+		// close window, platform specific handle in <ptr>
+		return 0;
+		
+	case audioMasterGetDirectory:
+		SHOW_CALLBACK ("amc: audioMasterGetDirectory\n");
+		// get plug directory, FSSpec on MAC, else char*
+		return 0;
+		
+	case audioMasterUpdateDisplay:
+		SHOW_CALLBACK ("amc: audioMasterUpdateDisplay\n");
+		// something has changed, update 'multi-fx' display
+		if (effect) {
+			effect->dispatcher(effect, effEditIdle, 0, 0, NULL, 0.0f);
+		}
+		return 0;
+		
+	case audioMasterBeginEdit:
+		SHOW_CALLBACK ("amc: audioMasterBeginEdit\n");
+		// begin of automation session (when mouse down), parameter index in <index>
+		return 0;
+		
+	case audioMasterEndEdit:
+		SHOW_CALLBACK ("amc: audioMasterEndEdit\n");
+		// end of automation session (when mouse up),     parameter index in <index>
+		return 0;
+		
+	case audioMasterOpenFileSelector:
+		SHOW_CALLBACK ("amc: audioMasterOpenFileSelector\n");
+		// open a fileselector window with VstFileSelect* in <ptr>
+		return 0;
+		
+	default:
+		SHOW_CALLBACK ("VST master dispatcher: undefed: %d, %d\n", opcode, effKeysRequired);
+		break;
+	}	
+	
+	return 0;
+}
+