添加一些关于midi播放的项目

2025-03-24 14:30:56 +08:00
parent e31eb22077
commit 498b4ef13b
699 changed files with 186162 additions and 1 deletions
@@ -0,0 +1,58 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <avr/io.h>
+#include "SynthCore.h"
+#include "Player.h"
+#include "PeriodTimer.h"
+
+void PlayerProcess(Player *player)
+{
+
+    uint8_t temp;
+
+    if (decayGenTick >= DECAY_TIME_FACTOR)
+    {
+        GenDecayEnvlopeAsm();
+        decayGenTick = 0;
+    }
+    if (player->status == STATUS_PLAYING)
+    {
+        if (PlayNoteTimingCheck(player))
+        {
+            do
+            {
+                temp = pgm_read_byte(player->scorePointer);
+                player->scorePointer++;
+                if (temp == 0xFF)
+                {
+                    player->status = STATUS_STOP;
+                }
+                else
+                {
+                    NoteOnAsm(temp);
+                }
+            } while ((temp & 0x80) == 0);
+            PlayUpdateNextScoreTick(player);
+        }
+    }
+}
+
+void PlayerPlay(Player *player, uint8_t *score)
+{
+    player->lastScoreTick = 0;
+    player->scorePointer = score;
+    currentTick = 0;
+    PlayUpdateNextScoreTick(player);
+    player->status = STATUS_PLAYING;
+}
+
+void PlayerInit(Player *player, Synthesizer *synthesizer)
+{
+    player->status = STATUS_STOP;
+    player->lastScoreTick = 0;
+    currentTick = 0;
+    player->scorePointer = NULL;
+    player->synthesizerPointer = synthesizer;
+    SynthInit(synthesizer);
+}