From 089663b7337d9a65e08dc59be9543c7cd42e3d8f Mon Sep 17 00:00:00 2001
From: marchingband <youthclubrecords@gmail.com>
Date: Tue, 1 Feb 2022 22:02:13 -0800
Subject: [PATCH] audition toggles playback

---
 src/rpc.c        |  2 +-
 src/wav_player.c | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/rpc.c b/src/rpc.c
index bddbd12..85fd195 100644
--- a/src/rpc.c
+++ b/src/rpc.c
@@ -45,7 +45,7 @@ char* on_rpc_in(cJSON *json)
             uint8_t voice = cJSON_GetObjectItemCaseSensitive(json, "voice")->valueint;
             uint8_t note = cJSON_GetObjectItemCaseSensitive(json, "note")->valueint;
             uint8_t velocity = cJSON_GetObjectItemCaseSensitive(json, "velocity")->valueint;
-            play_wav(voice, note, velocity);
+            toggle_wav(voice, note, velocity);
             char * res = "started wav";
             return(res);
             break;
diff --git a/src/wav_player.c b/src/wav_player.c
index 5724ac4..394eb8e 100644
--- a/src/wav_player.c
+++ b/src/wav_player.c
@@ -235,6 +235,18 @@ int16_t IRAM_ATTR scale_sample_clamped_16(int in, uint8_t volume)
   return (int16_t)(out * lin_float_lut[volume].val);
 }
 
+bool is_playing(uint8_t voice, uint8_t note)
+{
+  for(int i=0;i<NUM_BUFFERS;i++)
+  {
+    if((bufs[i].free == false) && (bufs[i].wav_player_event.voice == voice) && (bufs[i].wav_player_event.note == note))
+    {
+      return true;
+    }
+  }
+  return false;
+}
+
 void stop_wav(uint8_t voice, uint8_t note)
 {
   struct wav_player_event_t wav_player_event;
@@ -256,6 +268,18 @@ void play_wav(uint8_t voice, uint8_t note, uint8_t velocity)
   xQueueSendToBack(wav_player_queue, &wav_player_event, portMAX_DELAY);
 }
 
+void toggle_wav(uint8_t voice, uint8_t note, uint8_t velocity)
+{
+  if(is_playing(voice, note))
+  {
+    stop_wav(voice, note);
+  }
+  else
+  {
+    play_wav(voice, note, velocity);
+  }
+}
+
 int prune(uint8_t priority)
 {
   int candidate = -1;