partially document oam.c and brightness.c

1 files changed, 169 insertions, 0 deletions

diff --git a/arm9/src/oam.c b/arm9/src/oam.c
new file mode 100644
index 00000000..ff3405d4
--- /dev/null
+++ b/arm9/src/oam.c
@@ -0,0 +1,169 @@
+#include "global.h"
+#include "oam.h"
+#include "GX_g2.h"
+#include "MI_memory.h"
+#include "heap.h"
+
+extern void FUN_020213A0(void);
+extern void FUN_0202135C(void *param0,
+    u32 *param1,
+    u32 (*param2)(u32, u32),
+    u32 (*param3)(u32),
+    void (*param4)(void),
+    u32 param5,
+    u32 param6);
+extern void FUN_020203CC(u32 heap_id);
+extern void FUN_02020404(u32 heap_id);
+
+struct OamData *oamData;
+
+THUMB_FUNC void FUN_02009EAC(s32 param0,
+    s32 param1,
+    s32 param2,
+    s32 param3,
+    u32 param4,
+    u32 param5,
+    u32 param6,
+    u32 param7,
+    u32 param8)
+{
+    s32 r0;
+    if (param0 < 4)
+    {
+        r0 = 4;
+        if (param1 > 0x7c)
+        {
+            param1 = param1 - (4 - param0);
+        }
+    }
+    else
+    {
+        r0 = param0;
+    }
+
+    s32 r2;
+    if (param2 < 1)
+    {
+        r2 = 1;
+        if (param3 > 0x1e)
+        {
+            param3 = param3 - (1 - param2);
+        }
+    }
+    else
+    {
+        r2 = param2;
+    }
+
+    InitOamData(r0, param1, r2, param3, param4, param5, param6, param7, param8);
+}
+
+THUMB_FUNC void InitOamData(s32 param0,
+    s32 param1,
+    s32 param2,
+    s32 param3,
+    u32 param4,
+    u32 param5,
+    u32 param6,
+    u32 param7,
+    u32 heap_id)
+{
+    GF_ASSERT(oamData == NULL);
+    oamData = AllocFromHeap(heap_id, sizeof(struct OamData));
+    GF_ASSERT(oamData);
+
+    oamData->heap_id = heap_id;
+
+    GF_ASSERT(NNS_G2dGetNewOamManagerInstance(
+        &oamData->oamManagers[0], (u16)param0, (u16)param1, (u16)param2, (u16)param3, 0));
+    GF_ASSERT(NNS_G2dGetNewOamManagerInstance(
+        &oamData->oamManagers[1], (u16)param4, (u16)param5, (u16)param6, (u16)param7, 1));
+}
+
+THUMB_FUNC void ApplyAndResetOamManagerBuffer(void)
+{
+    if (oamData != NULL)
+    {
+        NNS_G2dApplyAndResetOamManagerBuffer(&oamData->oamManagers[0]);
+        NNS_G2dApplyAndResetOamManagerBuffer(&oamData->oamManagers[1]);
+    }
+}
+
+THUMB_FUNC void DeinitOamData(void)
+{
+    GF_ASSERT(oamData);
+
+    FUN_0200A064(oamData->heap_id);
+    FUN_0200A06C(oamData->heap_id);
+
+    FreeToHeap(oamData);
+    oamData = NULL;
+}
+
+THUMB_FUNC void FUN_02009FD8(void *param0, u32 *param1, u32 param2, u32 param3)
+{
+    GF_ASSERT(oamData);
+
+    if (param2 == 1)
+    {
+        FUN_0202135C(param0, param1, EntryOamManagerOamWithAffineIdxMainScreen, EntryOamManagerAffineMainScreen, FUN_020213A0, param2, param3);
+        return;
+    }
+
+    FUN_0202135C(param0, param1, EntryOamManagerOamWithAffineIdxSubScreen, EntryOamManagerAffineSubScreen, FUN_020213A0, param2, param3);
+}
+
+THUMB_FUNC NNSG2dOamManager *GetOamManager(u32 screen)
+{
+    GF_ASSERT(oamData);
+    if (screen == 0)
+    {
+        return &oamData->oamManagers[0];
+    }
+    else
+    {
+        return &oamData->oamManagers[1];
+    }
+}
+
+THUMB_FUNC void FUN_0200A064(u32 heap_id)
+{
+    FUN_020203CC(heap_id);
+}
+
+THUMB_FUNC void FUN_0200A06C(u32 heap_id)
+{
+    FUN_02020404(heap_id);
+}
+
+THUMB_FUNC u32 EntryOamManagerOamWithAffineIdxMainScreen(u32 param0, u32 param1)
+{
+    u32 res = NNS_G2dEntryOamManagerOamWithAffineIdx(&oamData->oamManagers[0], param0, param1);
+    GF_ASSERT(res);
+
+    return res;
+}
+
+THUMB_FUNC u32 EntryOamManagerOamWithAffineIdxSubScreen(u32 param0, u32 param1)
+{
+    u32 res = NNS_G2dEntryOamManagerOamWithAffineIdx(&oamData->oamManagers[1], param0, param1);
+    GF_ASSERT(res);
+
+    return res;
+}
+
+THUMB_FUNC u32 EntryOamManagerAffineMainScreen(u32 param0)
+{
+    u32 res = NNS_G2dEntryOamManagerAffine(&oamData->oamManagers[0], param0);
+    GF_ASSERT(res != 0xFFFE);
+
+    return res;
+}
+
+THUMB_FUNC u32 EntryOamManagerAffineSubScreen(u32 param0)
+{
+    u32 res = NNS_G2dEntryOamManagerAffine(&oamData->oamManagers[1], param0);
+    GF_ASSERT(res != 0xFFFE);
+
+    return res;
+}