compensate for processor latency during bounce

[ardour.git] / libs / ardour / session_vst.cc

diff --git a/libs/ardour/session_vst.cc b/libs/ardour/session_vst.cc
index 61805be2cd789b9a2ed3534da4c6170c29cc9a5b..508f11df138ccbc09dec97aae87ebd259ccecd9e 100644 (file)
--- a/libs/ardour/session_vst.cc
+++ b/libs/ardour/session_vst.cc
@@ -45,6 +45,20 @@ static int debug_callbacks = -1;
 
 using namespace ARDOUR;
 
+int Session::vst_current_loading_id = 0;
+const char* Session::vst_can_do_strings[] = {
+       X_("supplyIdle"),
+       X_("sendVstTimeInfo"),
+       X_("sendVstEvents"),
+       X_("sendVstMidiEvent"),
+       X_("receiveVstEvents"),
+       X_("receiveVstMidiEvent"),
+       X_("supportShell"),
+       X_("shellCategory"),
+       X_("shellCategorycurID")
+};
+const int Session::vst_can_do_string_count = sizeof (vst_can_do_strings) / sizeof (char*);
+
 intptr_t Session::vst_callback (
        AEffect* effect,
        int32_t opcode,
@@ -93,13 +107,12 @@ intptr_t Session::vst_callback (
        case audioMasterVersion:
                SHOW_CALLBACK ("amc: audioMasterVersion\n");
                // vst version, currently 2 (0 for older)
-               return 2; // XXX 2400
+               return 2400;
 
        case audioMasterCurrentId:
                SHOW_CALLBACK ("amc: audioMasterCurrentId\n");
-               // returns the unique id of a plug that's currently
-               // loading
-               return 0;
+               // returns the unique id of a plug that's currently loading
+               return vst_current_loading_id;
 
        case audioMasterIdle:
                SHOW_CALLBACK ("amc: audioMasterIdle\n");
@@ -248,6 +261,15 @@ intptr_t Session::vst_callback (
        case audioMasterProcessEvents:
                SHOW_CALLBACK ("amc: audioMasterProcessEvents\n");
                // VstEvents* in <ptr>
+               if (plug && plug->midi_buffer()) {
+                       VstEvents* v = (VstEvents*)ptr;
+                       for (int n = 0 ; n < v->numEvents; ++n) {
+                               VstMidiEvent *vme = (VstMidiEvent*) (v->events[n]->dump);
+                               if (vme->type == kVstMidiType) {
+                                       plug->midi_buffer()->push_back(vme->deltaFrames, 3, (uint8_t*)vme->midiData);
+                               }
+                       }
+               }
                return 0;
 
        case audioMasterSetTime:
@@ -408,6 +430,11 @@ intptr_t Session::vst_callback (
        case audioMasterCanDo:
                SHOW_CALLBACK ("amc: audioMasterCanDo\n");
                // string in ptr,  (const char*)ptr
+               for (int i = 0; i < vst_can_do_string_count; i++) {
+                       if (! strcmp(vst_can_do_strings[i], (const char*)ptr)) {
+                               return 1;
+                       }
+               }
                return 0;
 
        case audioMasterGetLanguage: