From d9808a376ee20a2e6dd57d1f272886f2ad192302 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Sun, 23 May 2021 18:48:50 -0400
Subject: Start decompiling Chatot sound data func

---
 arm9/src/sav_chatot.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 arm9/src/sav_chatot.c

(limited to 'arm9/src/sav_chatot.c')

diff --git a/arm9/src/sav_chatot.c b/arm9/src/sav_chatot.c
new file mode 100644
index 00000000..f2707821
--- /dev/null
+++ b/arm9/src/sav_chatot.c
@@ -0,0 +1,49 @@
+#include "global.h"
+#include "MI_memory.h"
+#include "heap.h"
+#include "save_block_2.h"
+
+struct SaveChatotSoundClip
+{
+    // TODO: Fill this in
+    BOOL exists;
+    s8 data[1000];
+};
+
+THUMB_FUNC u32 FUN_02029EC4(void)
+{
+    return sizeof(struct SaveChatotSoundClip);
+}
+
+THUMB_FUNC void FUN_02029ECC(struct SaveChatotSoundClip * chatot)
+{
+    MIi_CpuClear32(0, chatot, sizeof(struct SaveChatotSoundClip));
+    chatot->exists = FALSE;
+}
+
+THUMB_FUNC struct SaveChatotSoundClip * FUN_02029EE4(u32 heap_id)
+{
+    struct SaveChatotSoundClip * ret = (struct SaveChatotSoundClip *)AllocFromHeap(heap_id, sizeof(struct SaveChatotSoundClip));
+    FUN_02029ECC(ret);
+    return ret;
+}
+
+THUMB_FUNC struct SaveChatotSoundClip * FUN_02029EF8(struct SaveBlock2 * sav2)
+{
+    return (struct SaveChatotSoundClip *) SavArray_get(sav2, 22);
+}
+
+THUMB_FUNC u32 FUN_02029F04(struct SaveChatotSoundClip * chatot)
+{
+    return chatot->exists;
+}
+
+THUMB_FUNC void FUN_02029F08(struct SaveChatotSoundClip * chatot)
+{
+    chatot->exists = FALSE;
+}
+
+THUMB_FUNC s8 * FUN_02029F10(struct SaveChatotSoundClip * chatot)
+{
+    return chatot->data;
+}
-- 
cgit v1.2.3


From eb511d34eab6bdbb157a998b9aa5617b7679c242 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Mon, 24 May 2021 09:31:37 -0400
Subject: Finish decomping sav_chatot

---
 arm9/src/sav_chatot.c | 81 +++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 65 insertions(+), 16 deletions(-)

(limited to 'arm9/src/sav_chatot.c')

diff --git a/arm9/src/sav_chatot.c b/arm9/src/sav_chatot.c
index f2707821..7b240a99 100644
--- a/arm9/src/sav_chatot.c
+++ b/arm9/src/sav_chatot.c
@@ -1,49 +1,98 @@
 #include "global.h"
 #include "MI_memory.h"
 #include "heap.h"
-#include "save_block_2.h"
+#include "sav_chatot.h"
 
-struct SaveChatotSoundClip
-{
-    // TODO: Fill this in
-    BOOL exists;
-    s8 data[1000];
-};
-
-THUMB_FUNC u32 FUN_02029EC4(void)
+THUMB_FUNC u32 Sav2_Chatot_sizeof(void)
 {
     return sizeof(struct SaveChatotSoundClip);
 }
 
-THUMB_FUNC void FUN_02029ECC(struct SaveChatotSoundClip * chatot)
+THUMB_FUNC void Sav2_Chatot_init(struct SaveChatotSoundClip * chatot)
 {
     MIi_CpuClear32(0, chatot, sizeof(struct SaveChatotSoundClip));
     chatot->exists = FALSE;
 }
 
-THUMB_FUNC struct SaveChatotSoundClip * FUN_02029EE4(u32 heap_id)
+THUMB_FUNC struct SaveChatotSoundClip * Chatot_new(u32 heap_id)
 {
     struct SaveChatotSoundClip * ret = (struct SaveChatotSoundClip *)AllocFromHeap(heap_id, sizeof(struct SaveChatotSoundClip));
-    FUN_02029ECC(ret);
+    Sav2_Chatot_init(ret);
     return ret;
 }
 
-THUMB_FUNC struct SaveChatotSoundClip * FUN_02029EF8(struct SaveBlock2 * sav2)
+THUMB_FUNC struct SaveChatotSoundClip * Sav2_Chatot_get(struct SaveBlock2 * sav2)
 {
     return (struct SaveChatotSoundClip *) SavArray_get(sav2, 22);
 }
 
-THUMB_FUNC u32 FUN_02029F04(struct SaveChatotSoundClip * chatot)
+THUMB_FUNC BOOL Chatot_exists(struct SaveChatotSoundClip * chatot)
 {
     return chatot->exists;
 }
 
-THUMB_FUNC void FUN_02029F08(struct SaveChatotSoundClip * chatot)
+THUMB_FUNC void Chatot_invalidate(struct SaveChatotSoundClip * chatot)
 {
     chatot->exists = FALSE;
 }
 
-THUMB_FUNC s8 * FUN_02029F10(struct SaveChatotSoundClip * chatot)
+THUMB_FUNC s8 * Chatot_GetData(struct SaveChatotSoundClip * chatot)
 {
     return chatot->data;
 }
+
+static inline s8 transform(u8 value)
+{
+    return (s8)(value - 8);
+}
+
+THUMB_FUNC void Chatot_Decode(s8 * dest, const s8 * data)
+{
+    s32 i;
+    s32 dest_i;
+    u8 val;
+    s8 val2;
+
+    for (dest_i = 0, i = 0; i < 1000; i++, dest_i += 2)
+    {
+        val = (u8)(data[i] & 0xF);
+        val2 = transform(val);
+        dest[dest_i + 0] = (s8)(val2 << 4);
+        val = (u8)(data[i] >> 4);
+        val2 = transform(val);
+        dest[dest_i + 1] = (s8)(val2 << 4);
+    }
+}
+
+static inline u8 untransform(s8 val)
+{
+    val /= 16;
+    return (u8)(val + 8);
+}
+
+THUMB_FUNC void Chatot_Encode(struct SaveChatotSoundClip * chatot, const s8 * data)
+{
+    s32 src_i;
+    s32 i = 0;
+    u8 val2;
+    s8 val;
+    chatot->exists = TRUE;
+
+    for (src_i = 0; src_i < 2000; src_i += 2)
+    {
+        val = data[src_i + 0];
+        val2 = untransform(val);
+        chatot->data[i] = (s8)val2;
+
+        val = data[src_i + 1];
+        val2 = untransform(val);
+        chatot->data[i] |= val2 << 4;
+
+        i++;
+    }
+}
+
+THUMB_FUNC void Chatot_copy(struct SaveChatotSoundClip * dest, const struct SaveChatotSoundClip * src)
+{
+    MIi_CpuCopyFast(src, dest, sizeof(struct SaveChatotSoundClip));
+}
-- 
cgit v1.2.3