Changeset 774

Timestamp:

02/07/09 18:36:38 (4 years ago)

Author:

cmennie@…

Message:

Added initial (untested) midi out support

Location:

branches/midi_out/libs/hydrogen/src/IO

Files:

• PortMidiDriver.h (modified) (3 diffs)
• portmidi_driver.cpp (modified) (6 diffs)

branches/midi_out/libs/hydrogen/src/IO/PortMidiDriver.h

@@ -27 +27 @@
 
 #include <hydrogen/IO/MidiInput.h>
+#include <hydrogen/IO/MidiOutput.h>
 #include <portmidi.h>
 
@@ -36 +37 @@
 public:
         PmStream *m_pMidiIn;
+        PmStream *m_pMidiOut;
         bool m_bRunning;
 
@@ -45 +47 @@
         virtual std::vector<QString> getOutputPortList();
         
-        virtual void handleQueueNote(Note* pNote) {}
-        virtual void handleQueueAllNoteOff() {}
+        virtual void handleQueueNote(Note* pNote);
+        virtual void handleQueueAllNoteOff();
 
 private:

branches/midi_out/libs/hydrogen/src/IO/portmidi_driver.cpp

@@ -24 +24 @@
 
 #include <hydrogen/Preferences.h>
+#include <hydrogen/note.h>
+#include <hydrogen/instrument.h>
+#include <hydrogen/hydrogen.h>
+#include <hydrogen/globals.h>
 
 #ifdef WIN32
@@ -114 +118 @@
 
 PortMidiDriver::PortMidiDriver()
-                : MidiInput( "PortMidiDriver" )
+                : MidiInput( "PortMidiDriver" ), MidiOutput( "PortMidiDriver" ), Object( "PortMidiDriver" )
                 , m_bRunning( false )
 {
@@ -136 +140 @@
 
         int nDeviceId = -1;
+        int nOutDeviceId = -1;
         QString sMidiPortName = Preferences::getInstance()->m_sMidiPortName;
         int nDevices = Pm_CountDevices();
@@ -149 +154 @@
                         }
                 }
+                
+                if ( info->output == TRUE ) {
+                        if ( info->name == sMidiPortName.toStdString() ) {
+                                nOutDeviceId = i;
+                        }
+                }
         }
 
         if ( nDeviceId == -1 ) {
                 INFOLOG( "Midi input device not found." );
+                return;
+        }
+        
+        if ( nOutDeviceId == -1 ) {
+                INFOLOG( "Midi output device not found." );
                 return;
         }
@@ -176 +192 @@
                 ERRORLOG( "Error in Pm_OpenInput" );
         }
+        
+        err = Pm_OpenOutput(
+                          &m_pMidiOut,
+                          nOutDeviceId,
+                          NULL,
+                          nInputBufferSize,
+                          TIME_PROC,
+                          NULL,
+                          0
+                      );
+
+        if ( err != pmNoError ) {
+                ERRORLOG( "Error in Pm_OpenInput" );
+        }
 
         m_bRunning = true;
@@ -220 +250 @@
 }
 
+void PortMidiDriver::handleQueueNote(Note* pNote)
+{       
+        if ( m_pMidiOut == NULL ) {
+                ERRORLOG( "m_pMidiOut = NULL " );
+                return;
+        }
+
+        int channel = pNote->get_instrument()->get_midi_out_channel();
+        if (channel < 0) {
+                return;
+        }
+                
+        int key = pNote->get_instrument()->get_midi_out_note();
+        int velocity = pNote->get_velocity() * 127;
+        
+        PmEvent event;
+        event.timestamp = 0;
+        
+        //Note off
+        event.message = Pm_Message(0x80 | channel, key, velocity);
+        Pm_Write(m_pMidiOut, &event, 1);
+        
+        //Note on
+        event.message = Pm_Message(0x90 | channel, key, velocity);
+        Pm_Write(m_pMidiOut, &event, 1);
+}
+
+void PortMidiDriver::handleQueueAllNoteOff()
+{
+        if ( m_pMidiOut == NULL ) {
+                ERRORLOG( "m_pMidiOut = NULL " );
+                return;
+        }
+        
+        InstrumentList *instList = Hydrogen::get_instance()->getSong()->get_instrument_list();
+                
+        unsigned int numInstruments = instList->get_size();
+        for (int index = 0; index < numInstruments; ++index) {
+                Instrument *curInst = instList->get(index);
+        
+                int channel = curInst->get_midi_out_channel();
+                if (channel < 0) {
+                        continue;
+                }
+                int key = curInst->get_midi_out_note();
+                
+                PmEvent event;
+                event.timestamp = 0;
+        
+                //Note off
+                event.message = Pm_Message(0x80 | channel, key, 0);
+                Pm_Write(m_pMidiOut, &event, 1);
+        }
+}
+
 };