2 files changed, 17 insertions, 14 deletions
diff --git a/include/data2.h b/include/data2.h
index 97cb4fd7a..9f6644714 100644
--- a/include/data2.h
+++ b/include/data2.h
@@ -3,7 +3,7 @@
 
 #include "sprite.h"
 
-struct UnknownTaskStruct;
+struct ScanlineEffectParams;
 
 struct MonCoords
 {
@@ -42,7 +42,7 @@ extern u8 gSpeciesNames[][11];
 extern const u8 gMoveNames[][13];
 extern const u8 gAbilityNames[][13];
 extern const u8 gTypeNames[][7];
-extern const struct UnknownTaskStruct gUnknown_081F9674;
+extern const struct ScanlineEffectParams gUnknown_081F9674;
 extern const u8 gUnknown_081F96C8[];
 extern struct CompressedSpriteSheet gUnknown_081FAEA4;
 extern struct CompressedSpritePalette gUnknown_081FAEAC;
diff --git a/include/scanline_effect.h b/include/scanline_effect.h
index b28973eb3..242b35448 100644
--- a/include/scanline_effect.h
+++ b/include/scanline_effect.h
@@ -1,10 +1,13 @@
 #ifndef GUARD_SCANLINE_EFFECT_H
 #define GUARD_SCANLINE_EFFECT_H
 
-struct UnknownTaskStruct
+// DMA control value to ransfer a single 16-bit value at HBlank
+#define SCANLINE_EFFECT_DMACNT_16BIT (((DMA_ENABLE | DMA_START_HBLANK | DMA_REPEAT | DMA_SRC_INC | DMA_DEST_INC | DMA_16BIT | DMA_DEST_RELOAD) << 16) | 1)
+
+struct ScanlineEffectParams
 {
-    volatile void *dest;
-    u32 control;
+    volatile void *dmaDest;
+    u32 dmaControl;
     u8 unk8;
     u8 unk9;
 };
@@ -12,9 +15,9 @@ struct UnknownTaskStruct
 struct ScanlineEffect
 {
     void *src[2];
-    volatile void *dest;
-    u32 unkC;
-    void (*unk10)(void);
+    volatile void *dmaDest;
+    u32 dmaControl;
+    void (*setFirstScanlineReg)(void);
     u8 srcBank;
     u8 unk15;
     u8 unk16;
@@ -25,17 +28,17 @@ struct ScanlineEffect
 
 extern struct ScanlineEffect gScanlineEffect;
 
-extern u16 gUnknown_03004DE0[][0x3C0];
+extern u16 gScanlineEffectRegBuffers[][0x3C0];
 
 void ScanlineEffect_Stop(void);
 void ScanlineEffect_Stop(void);
 void dp12_8087EA4(void);
 void dp12_8087EA4(void);
-//void sub_80895F8(u32 i, u32 i1, u32 i2);
-//void sub_80895F8();
-void sub_80895F8(struct UnknownTaskStruct unk);
-void ScanlineEffect_TransferDma(void);
-void ScanlineEffect_TransferDma();
+//void ScanlineEffect_SetParams(u32 i, u32 i1, u32 i2);
+//void ScanlineEffect_SetParams();
+void ScanlineEffect_SetParams(struct ScanlineEffectParams unk);
+void ScanlineEffect_InitHBlankDmaTransfer(void);
+void ScanlineEffect_InitHBlankDmaTransfer();
 //void ScanlineEffect_InitWave(int i, int i1, int i2, int i3, int i4, int i5, int i6);
 u8 ScanlineEffect_InitWave(u8 a1, u8 a2, u8 a3, u8 a4, u8 a5, u8 a6, u8 a7);