From c0a3728db5f028f764b4887fb1ea8170de2bf1c3 Mon Sep 17 00:00:00 2001
From: dakkar <dakkar@thenautilus.net>
Date: Fri, 28 Aug 2020 18:01:12 +0100
Subject: vaguely working

it takes too long to render the font, though
---
 ESP8266Audio         |  2 +-
 esp32/lego-piano.ino | 50 +++++++++++++++++++++++---------------------------
 2 files changed, 24 insertions(+), 28 deletions(-)

diff --git a/ESP8266Audio b/ESP8266Audio
index cd42e28..9df0586 160000
--- a/ESP8266Audio
+++ b/ESP8266Audio
@@ -1 +1 @@
-Subproject commit cd42e28ca5ac09f5b6267ea2eb2b665c90cdb6b1
+Subproject commit 9df0586bdf7252bf635ee41fe3778105c6fefa1e
diff --git a/esp32/lego-piano.ino b/esp32/lego-piano.ino
index 246794e..88b6520 100644
--- a/esp32/lego-piano.ino
+++ b/esp32/lego-piano.ino
@@ -20,9 +20,10 @@
 
 #define TSF_IMPLEMENTATION
 #define TSF_NO_STDIO
-#include "../tsf/tsf.h"
+#include "../ESP8266Audio/src/libtinysoundfont/tsf.h"
 
 #include "../RingBuffer/src/RingBuf.h"
+#include "font.h"
 
 int currentLed = 0;
 
@@ -45,22 +46,6 @@ portMUX_TYPE timerMux = portMUX_INITIALIZER_UNLOCKED;
 tsf* g_TinySoundFont = 0;
 bool playing = false;
 
-//This is a minimal SoundFont with a single loopin saw-wave sample/instrument/preset (484 bytes)
-const static unsigned char MinimalSoundFont[] =
-{
-	#define TEN0 0,0,0,0,0,0,0,0,0,0
-	'R','I','F','F',220,1,0,0,'s','f','b','k',
-	'L','I','S','T',88,1,0,0,'p','d','t','a',
-	'p','h','d','r',76,TEN0,TEN0,TEN0,TEN0,0,0,0,0,TEN0,0,0,0,0,0,0,0,255,0,255,0,1,TEN0,0,0,0,
-	'p','b','a','g',8,0,0,0,0,0,0,0,1,0,0,0,'p','m','o','d',10,TEN0,0,0,0,'p','g','e','n',8,0,0,0,41,0,0,0,0,0,0,0,
-	'i','n','s','t',44,TEN0,TEN0,0,0,0,0,0,0,0,0,TEN0,0,0,0,0,0,0,0,1,0,
-	'i','b','a','g',8,0,0,0,0,0,0,0,2,0,0,0,'i','m','o','d',10,TEN0,0,0,0,
-	'i','g','e','n',12,0,0,0,54,0,1,0,53,0,0,0,0,0,0,0,
-	's','h','d','r',92,TEN0,TEN0,0,0,0,0,0,0,0,50,0,0,0,0,0,0,0,49,0,0,0,34,86,0,0,60,0,0,0,1,TEN0,TEN0,TEN0,TEN0,0,0,0,0,0,0,0,
-	'L','I','S','T',112,0,0,0,'s','d','t','a','s','m','p','l',100,0,0,0,86,0,119,3,31,7,147,10,43,14,169,17,58,21,189,24,73,28,204,31,73,35,249,38,46,42,71,46,250,48,150,53,242,55,126,60,151,63,108,66,126,72,207,
-		70,86,83,100,72,74,100,163,39,241,163,59,175,59,179,9,179,134,187,6,186,2,194,5,194,15,200,6,202,96,206,159,209,35,213,213,216,45,220,221,223,76,227,221,230,91,234,242,237,105,241,8,245,118,248,32,252
-};
-
 RingBuf<short, 1000> buffer;
 
 void IRAM_ATTR onTimer() {
@@ -96,7 +81,7 @@ void setup() {
   currentLed = 0;
   playing = false;
 
-  g_TinySoundFont = tsf_load_memory(MinimalSoundFont, sizeof(MinimalSoundFont));
+  g_TinySoundFont = tsf_load_memory(SoundFont, sizeof(SoundFont));
   if (g_TinySoundFont) {
     // render at 20kHz
     tsf_set_output(g_TinySoundFont, TSF_MONO, 20000, 0);
@@ -171,29 +156,40 @@ void loop() {
 
   enableLed(currentLed);
   delay(1);
-  if (sense(currentLed)) {
-    if (!pressed[currentLed]) {
+  if (sense(currentLed)) { // currently pressed
+    if (!pressed[currentLed]) { // was not pressed previously?
       Serial.print(currentLed);
       Serial.println(" proximity!");
 
-      pressed[currentLed]=1;
+      pressed[currentLed]=1; // mark it pressed
       if (g_TinySoundFont) {
+        // start the note
         tsf_note_on(g_TinySoundFont, 0, 60 + currentLed, 1.0f);
       }
     }
   }
-  else if (pressed[currentLed]) {
-    pressed[currentLed]=0;
+  // not pressed currently
+  else if (pressed[currentLed]) { // was pressed previously?
+    Serial.print(currentLed);
+    Serial.println(" released!");
+
+    pressed[currentLed]=0; // mark it no longer pressed
     if (g_TinySoundFont) {
+      // stop the note
       tsf_note_off(g_TinySoundFont, 0, 60 + currentLed);
     }
   }
 
   currentLed = (currentLed+1)%(row_count*col_count);
 
-  while (!buffer.isFull()) {
-    short sample;
-    tsf_render_short(g_TinySoundFont, &sample, 1, 0);
-    buffer.lockedPush(sample);
+  int toFill = buffer.maxSize() - buffer.size();
+  if (toFill) {
+    noInterrupts();
+    for (int i=0;i<toFill;++i) {
+      short sample;
+      tsf_render_short(g_TinySoundFont, &sample, 1, 0);
+      buffer.push(sample);
+    }
+    interrupts();
   }
 }
\ No newline at end of file
-- 
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