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-rw-r--r--project/Core/Src/Project/player.c67
-rw-r--r--project/Core/Src/Project/song_info.c2
-rw-r--r--project/Core/Src/main.c4
3 files changed, 72 insertions, 1 deletions
diff --git a/project/Core/Src/Project/player.c b/project/Core/Src/Project/player.c
new file mode 100644
index 0000000..71531a8
--- /dev/null
+++ b/project/Core/Src/Project/player.c
@@ -0,0 +1,67 @@
+/*
+ * player.c
+ *
+ * Created on: Nov 25, 2025
+ * Author: sowgro
+ */
+
+#include "endian_converters.h"
+#include <stdint.h>
+#include "endian_converters.h"
+#include "hw8.h"
+
+#define NOTE_OFF_EVENT (0)
+#define NOTE_ON_EVENT (1)
+#define KEY_PRESSURE (2)
+
+typedef struct {
+ uint8_t ev_type;
+ uint32_t abs_time;
+ uint8_t key_number;
+ uint8_t value;
+} note_event_t;
+
+void parse_song(uint8_t *p_song) {
+ p_song += 4; // skip MTrk
+ uint32_t MTrk_len = convert_to_uint32(p_song);
+ p_song += 4;
+
+ note_event_t events[1/*track*/][1024/*event*/];
+ int curEvent = 0;
+ uint32_t prev_abs_time = 0;
+
+ for (uint8_t *p_end = p_song + MTrk_len; p_song != p_end; p_song++) {
+ note_event_t note;
+
+ parseDelay_result_t delay_result = parseDelay(p_song);
+ uint32_t abs_time = prev_abs_time + delay_result.value;
+ note.abs_time = abs_time;
+ prev_abs_time = abs_time;
+ p_song += delay_result.bytes_used;
+
+
+ if (*p_song >> 4 == 0b1000) {
+ note.ev_type = NOTE_OFF_EVENT;
+ } else if (*p_song >> 4 == 0b1001) {
+ note.ev_type = NOTE_ON_EVENT;
+ } else if (*p_song >> 4 == 0b1010) {
+ note.ev_type = KEY_PRESSURE;
+ } else {
+ continue;
+ }
+
+// size_t channelNumber = *p_song && 0b00001111;
+ p_song++;
+
+ note.key_number = *p_song;
+ p_song++;
+
+ note.value = *p_song;
+ p_song++;
+
+ events[0][curEvent++] = note;
+ }
+ events[0][curEvent] = 0;
+
+ printf("done %p", events);
+}
diff --git a/project/Core/Src/Project/song_info.c b/project/Core/Src/Project/song_info.c
index 75f6dd9..4a94954 100644
--- a/project/Core/Src/Project/song_info.c
+++ b/project/Core/Src/Project/song_info.c
@@ -47,5 +47,7 @@ song_info_t get_song_info(uint8_t *p_song) {
}
}
+
+
return ret;
}
diff --git a/project/Core/Src/main.c b/project/Core/Src/main.c
index b78da42..29c8f5e 100644
--- a/project/Core/Src/main.c
+++ b/project/Core/Src/main.c
@@ -14,6 +14,7 @@
#include "project.h"
#include "hw8.h"
#include "activity12.h"
+#include "song.h"
int main(void){
@@ -31,6 +32,7 @@ int main(void){
// hw6_run();
// activity12_run();
// activity13_run();
- hw8_run();
+// hw8_run();
+ parse_song(get_song(0).p_song + 109);
}