time_ms to uint32_t to reduce memory consumption

Author: pschatzmann

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

@@ -29,7 +29,7 @@ void setup() {
     if (pos < example_mid_len) {
       written = mf.write(example_mid + pos, len);
     } else {
-      //mf.endWrite();
+      // mf.endWrite(); // parse final unparsed bytes
       break;
     }
     pos += written;

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

@@ -34,7 +34,7 @@ void setup() {
 void loop() {
 
   // Parse midi
-  auto state = parser.parseTimed(); // parseTimed() or parse();
+  auto state = parser.parse(); // parseTimed() or parse();
 
   // Process Result
   switch (state.status)

src/MidiFileParserMultiTrack.h

@@ -234,7 +234,11 @@ class MidiFileParserMultiTrack : public Print {
 
   /// Marks that we are done with writing the data to prepare for parse() and
   /// parseTimed() calls.
-  void endWrite() { parser.setState(MIDI_PARSER_EOB); }
+  void endWrite() { 
+    parser.setState(MIDI_PARSER_EOB);
+    // force to parse the remaining bytes
+    parse(0);
+  }
 
   /// Provides the string description for the midi_status value
   const char *midi_status_name(int status) {

src/MidiFileParserState.h

@@ -89,7 +89,7 @@ struct midi_midi_event {
  */
 struct midi_time_event : public midi_midi_event {
   /// @brief  cummulated time in milliseconds
-  uint64_t time_ms;
+  uint32_t time_ms;
   operator bool() { return status != 0; }
 };