Diff: events.cpp

Revision:

0:93868ff6d1b1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/events.cpp	Fri Jun 14 09:25:58 2013 +0000
@@ -0,0 +1,102 @@
+#include <climits>
+#include "mbed.h"
+
+#include "define.h"
+#include "Instrument.h"
+#include "RingBuffer.h"
+
+extern Timer t;
+
+extern Instrument inst[NUM_INSTRUMENT];
+extern uint8_t const performerAddress[NUM_PERFORMER];
+
+
+void dispatchNoteOff(uint8_t statusByte, uint8_t noteNumber) {
+    uint16_t targetPerformer;
+    char message[2];
+
+    // Find an Instrument sounding the specified note
+    for (uint16_t i = 0; i < NUM_INSTRUMENT; i++) {
+        if (inst[i].channel == (statusByte & 0x0f) + 1
+            && inst[i].noteNumber == noteNumber) {
+            inst[i].noteOnMs = 0;
+            inst[i].channel = 0;
+            inst[i].noteNumber = 0;
+            inst[i].velocity = 0;
+            
+            // Send note off message to Performer
+            targetPerformer = i / NUM_INSTRUMENT_IN_PERFORMER;
+            message[0] = 0x80;
+            message[1] = i % NUM_INSTRUMENT_IN_PERFORMER;
+            // i2c.write(performerAddress[targetPerformer] << 1, message, 2);
+            return;
+        }
+    }
+}
+
+void dispatchNoteOn(uint8_t statusByte, uint8_t noteNumber, uint8_t velocity) {
+    uint32_t currentMs = t.read_ms();
+    uint32_t oldestMs = UINT_MAX;
+    uint16_t oldest = 0;
+    uint16_t targetPerformer;
+    char message[4];
+    
+    // Find a free Instrument or the one with the oldest note
+    for (uint16_t i = 0; i < NUM_INSTRUMENT; i++) {
+        if (inst[i].noteOnMs < oldestMs) {
+            oldest = i;
+            oldestMs = inst[i].noteOnMs;
+        }
+    }
+    
+    inst[oldest].noteOnMs = currentMs;
+    inst[oldest].channel = (statusByte & 0x0f) + 1;
+    inst[oldest].noteNumber = noteNumber;
+    inst[oldest].velocity = velocity;
+        
+    // Send note on message to Performer
+    targetPerformer = oldest / NUM_INSTRUMENT_IN_PERFORMER;
+    message[0] = statusByte;
+    message[1] = oldest % NUM_INSTRUMENT_IN_PERFORMER;
+    message[2] = noteNumber;
+    message[3] = velocity;
+    // i2c.write(performerAddress[targetPerformer] << 1, message, 4);
+}
+
+void setControlChange(uint8_t statusByte, uint8_t controlNumber, uint8_t value) {
+    char message[3];
+    
+    message[0] = statusByte;
+    message[1] = controlNumber;
+    message[2] = value;
+    /*
+    for (uint8_t i = 0; i < NUM_PERFORMER; i++) {
+        i2c.write(performerAddress[i] << 1, message, 3);
+    }
+    */
+}
+
+void setProgramChange(uint8_t statusByte, uint8_t programNumber) {
+    char message[2];
+    
+    message[0] = statusByte;
+    message[1] = programNumber;
+    /*
+    for (uint8_t i = 0; i < NUM_PERFORMER; i++) {
+        i2c.write(performerAddress[i] << 1, message, 2);
+    }
+    */
+}
+
+void setPitchBend(uint8_t statusByte, uint16_t bend) {
+    char message[3];
+    
+    message[0] = statusByte;
+    message[1] = bend >> 8;
+    message[2] = bend & 0x00ff;
+    /*
+    for (uint8_t i = 0; i < NUM_PERFORMER; i++) {
+        i2c.write(performerAddress[i] << 1, message, 3);
+    }
+    */
+}