Examples

Author: pschatzmann

examples/midi-parse-multitrack/midi-parse-multitrack.ino

@@ -1,6 +1,10 @@
 /**
- * We provide a midi file as hex array and parse it incrementally.
-*/
+ * We provide a midi file as hex array and parse it incrementally. 
+ * This sketch has quite some complexity for reading the data. 
+ * This can be avoided when you use the MemoryStream and StreamCopy 
+ * from the AudioTools project.
+ * @author Phil Schatzmann
+ */
 #include "MidiFileParserMultiTrack.h"
 #include "examples/example-midi.h"
 #include <algorithm>
@@ -14,7 +18,7 @@ bool debug = false;
 
 void setup() {
 #ifdef ARDUINO
-  Serial.begin(19200);
+  Serial.begin(115200);
 #endif
   mf.begin(debug, 256 * 5);
 

examples/midi-parse-using-audiotools/midi-parse-using-audiotools.ino

@@ -0,0 +1,59 @@
+/**
+ * We provide a midi file as hex array and parse it incrementally.
+ * We use the MemoryStream and StreamCopy from the AudioTools project.
+ * Please not that we need to use psram!
+ * @author Phil Schatzmann
+ */
+#include "AudioTools.h" // https://github.com/pschatzmann/arduino-audio-tools
+#include "MidiFileParserMultiTrack.h"
+#include "examples/example-midi.h"
+#include "esp_heap_caps.h"
+
+using namespace midi;
+
+const int write_size = 256;
+MidiFileParserMultiTrack parser;
+MemoryStream midi_data(example_mid, example_mid_len);
+StreamCopy copy(parser, midi_data, write_size);
+bool debug = false;
+const int psram_limit = 8;
+
+void setup() {
+  Serial.begin(115200);
+  parser.begin(debug, 256 * 5);
+
+  // use psram
+  heap_caps_malloc_extmem_enable(psram_limit);
+
+  // load data to parser
+  copy.copyAll();
+  // data has been loaded
+  printf("Number of events: %ld\n", (long)parser.size());
+}
+
+void loop() {
+
+  // Parse midi
+  auto state = parser.parseTimed(); // parseTimed() or parse();
+
+  // Process Result
+  switch (state.status)
+  case MIDI_PARSER_TRACK_MIDI: {
+    // process midi
+    char msg[100];
+    sprintf(msg, "process  time-cumulated ms: %ld status: %d [%s]   channel: %d  param1: %d   param2: %d",
+            (long)state.timeInMs(), state.midi.status,
+            parser.midi_status_name(state.midi.status), state.midi.channel,
+            state.midi.param1, state.midi.param2);
+    Serial.println(msg);
+    break;
+  case MIDI_PARSER_ERROR:
+    Serial.println("Error\n");
+  case MIDI_PARSER_EOB:
+    while (true)
+      ;
+    break;
+  default:
+    break;
+  }
+}

examples/midi-parse/midi-parse.ino

@@ -1,6 +1,10 @@
 /**
  * We provide a midi file as hex array and parse it incrementally.
-*/
+ * This sketch has quite some complexity for reading the data. 
+ * This can be avoided when you use the MemoryStream and StreamCopy 
+ * from the AudioTools project.
+ * @author Phil Schatzmann
+ */
 #include "MidiFileParser.h"
 #include "examples/example-midi.h"
 #include <algorithm>
@@ -14,7 +18,7 @@ bool debug = false;
 
 void setup() {
 #ifdef ARDUINO
-  Serial.begin(19200);
+  Serial.begin(115200);
 #endif
   mf.begin(debug, 256 * 5);
 }